From: Finn Thain fthain@telegraphics.com.au

[ Upstream commit e63d6fb5637e92725cf143559672a34b706bca4f ]

Enabling CONFIG_TAU_INT causes random crashes:

Unrecoverable exception 1700 at c0009414 (msr=1000) Oops: Unrecoverable exception, sig: 6 [#1] BE PAGE_SIZE=4K MMU=Hash SMP NR_CPUS=2 PowerMac Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-pmac-00043-gd5f545e1a8593 #5 NIP: c0009414 LR: c0009414 CTR: c00116fc REGS: c0799eb8 TRAP: 1700 Not tainted (5.7.0-pmac-00043-gd5f545e1a8593) MSR: 00001000 <ME> CR: 22000228 XER: 00000100

GPR00: 00000000 c0799f70 c076e300 00800000 0291c0ac 00e00000 c076e300 00049032 GPR08: 00000001 c00116fc 00000000 dfbd3200 ffffffff 007f80a8 00000000 00000000 GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 c075ce04 GPR24: c075ce04 dfff8880 c07b0000 c075ce04 00080000 00000001 c079ef98 c079ef5c NIP [c0009414] arch_cpu_idle+0x24/0x6c LR [c0009414] arch_cpu_idle+0x24/0x6c Call Trace: [c0799f70] [00000001] 0x1 (unreliable) [c0799f80] [c0060990] do_idle+0xd8/0x17c [c0799fa0] [c0060ba4] cpu_startup_entry+0x20/0x28 [c0799fb0] [c072d220] start_kernel+0x434/0x44c [c0799ff0] [00003860] 0x3860 Instruction dump: XXXXXXXX XXXXXXXX XXXXXXXX 3d20c07b XXXXXXXX XXXXXXXX XXXXXXXX 7c0802a6 XXXXXXXX XXXXXXXX XXXXXXXX 4e800421 XXXXXXXX XXXXXXXX XXXXXXXX 7d2000a6 ---[ end trace 3a0c9b5cb216db6b ]---

Resolve this problem by disabling each THRMn comparator when handling the associated THRMn interrupt and by disabling the TAU entirely when updating THRMn thresholds.

Fixes: 1da177e4c3f41 ("Linux-2.6.12-rc2") Signed-off-by: Finn Thain fthain@telegraphics.com.au Tested-by: Stan Johnson userm57@yahoo.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/5a0ba3dc5612c7aac596727331284a3676c08472.159926054... Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/kernel/tau_6xx.c | 65 +++++++++++++--------------------- arch/powerpc/platforms/Kconfig | 9 ++--- 2 files changed, 26 insertions(+), 48 deletions(-)

diff --git a/arch/powerpc/kernel/tau_6xx.c b/arch/powerpc/kernel/tau_6xx.c index 575340d8c219..8ece45c2a1f6 100644 --- a/arch/powerpc/kernel/tau_6xx.c +++ b/arch/powerpc/kernel/tau_6xx.c @@ -42,8 +42,6 @@ static struct tau_temp

static bool tau_int_enable;

-#undef DEBUG - /* TODO: put these in a /proc interface, with some sanity checks, and maybe * dynamic adjustment to minimize # of interrupts */ /* configurable values for step size and how much to expand the window when @@ -67,42 +65,33 @@ static void set_thresholds(unsigned long cpu)

static void TAUupdate(int cpu) { - unsigned thrm; - -#ifdef DEBUG - printk("TAUupdate "); -#endif + u32 thrm; + u32 bits = THRM1_TIV | THRM1_TIN | THRM1_V;

/* if both thresholds are crossed, the step_sizes cancel out * and the window winds up getting expanded twice. */ - if((thrm = mfspr(SPRN_THRM1)) & THRM1_TIV){ /* is valid? */ - if(thrm & THRM1_TIN){ /* crossed low threshold */ - if (tau[cpu].low >= step_size){ - tau[cpu].low -= step_size; - tau[cpu].high -= (step_size - window_expand); - } - tau[cpu].grew = 1; -#ifdef DEBUG - printk("low threshold crossed "); -#endif + thrm = mfspr(SPRN_THRM1); + if ((thrm & bits) == bits) { + mtspr(SPRN_THRM1, 0); + + if (tau[cpu].low >= step_size) { + tau[cpu].low -= step_size; + tau[cpu].high -= (step_size - window_expand); } + tau[cpu].grew = 1; + pr_debug("%s: low threshold crossed\n", __func__); } - if((thrm = mfspr(SPRN_THRM2)) & THRM1_TIV){ /* is valid? */ - if(thrm & THRM1_TIN){ /* crossed high threshold */ - if (tau[cpu].high <= 127-step_size){ - tau[cpu].low += (step_size - window_expand); - tau[cpu].high += step_size; - } - tau[cpu].grew = 1; -#ifdef DEBUG - printk("high threshold crossed "); -#endif + thrm = mfspr(SPRN_THRM2); + if ((thrm & bits) == bits) { + mtspr(SPRN_THRM2, 0); + + if (tau[cpu].high <= 127 - step_size) { + tau[cpu].low += (step_size - window_expand); + tau[cpu].high += step_size; } + tau[cpu].grew = 1; + pr_debug("%s: high threshold crossed\n", __func__); } - -#ifdef DEBUG - printk("grew = %d\n", tau[cpu].grew); -#endif }

#ifdef CONFIG_TAU_INT @@ -127,17 +116,17 @@ void TAUException(struct pt_regs * regs) static void tau_timeout(void * info) { int cpu; - unsigned long flags; int size; int shrink;

- /* disabling interrupts *should* be okay */ - local_irq_save(flags); cpu = smp_processor_id();

if (!tau_int_enable) TAUupdate(cpu);

+ /* Stop thermal sensor comparisons and interrupts */ + mtspr(SPRN_THRM3, 0); + size = tau[cpu].high - tau[cpu].low; if (size > min_window && ! tau[cpu].grew) { /* do an exponential shrink of half the amount currently over size */ @@ -159,18 +148,12 @@ static void tau_timeout(void * info)

set_thresholds(cpu);

- /* - * Do the enable every time, since otherwise a bunch of (relatively) - * complex sleep code needs to be added. One mtspr every time - * tau_timeout is called is probably not a big deal. - * + /* Restart thermal sensor comparisons and interrupts. * The "PowerPC 740 and PowerPC 750 Microprocessor Datasheet" * recommends that "the maximum value be set in THRM3 under all * conditions." */ mtspr(SPRN_THRM3, THRM3_SITV(0x1fff) | THRM3_E); - - local_irq_restore(flags); }

static struct workqueue_struct *tau_workq; diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index e094211c7206..9914544e6677 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -242,7 +242,7 @@ config TAU don't assume the cpu temp is actually what /proc/cpuinfo says it is.

config TAU_INT - bool "Interrupt driven TAU driver (DANGEROUS)" + bool "Interrupt driven TAU driver (EXPERIMENTAL)" depends on TAU ---help--- The TAU supports an interrupt driven mode which causes an interrupt @@ -250,12 +250,7 @@ config TAU_INT to get notified the temp has exceeded a range. With this option off, a timer is used to re-check the temperature periodically.

- However, on some cpus it appears that the TAU interrupt hardware - is buggy and can cause a situation which would lead unexplained hard - lockups. - - Unless you are extending the TAU driver, or enjoy kernel/hardware - debugging, leave this option off. + If in doubt, say N here.

config TAU_AVERAGE bool "Average high and low temp"

From: Jason Gunthorpe jgg@nvidia.com

[ Upstream commit 1bb5091def706732c749df9aae45fbca003696f2 ]

There is no kernel user of RDMA CM multicast so this code managing the multicast subscription of the kernel-only internal QP is dead. Remove it.

This makes the bug fixes in the next patches much simpler.

Link: https://lore.kernel.org/r/20200902081122.745412-7-leon@kernel.org Signed-off-by: Leon Romanovsky leonro@nvidia.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/core/cma.c | 19 ++++--------------- 1 file changed, 4 insertions(+), 15 deletions(-)

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c index 1f14cd4ce3db..65c15114cbe7 100644 --- a/drivers/infiniband/core/cma.c +++ b/drivers/infiniband/core/cma.c @@ -4020,16 +4020,6 @@ static int cma_ib_mc_handler(int status, struct ib_sa_multicast *multicast) else pr_debug_ratelimited("RDMA CM: MULTICAST_ERROR: failed to join multicast. status %d\n", status); - mutex_lock(&id_priv->qp_mutex); - if (!status && id_priv->id.qp) { - status = ib_attach_mcast(id_priv->id.qp, &multicast->rec.mgid, - be16_to_cpu(multicast->rec.mlid)); - if (status) - pr_debug_ratelimited("RDMA CM: MULTICAST_ERROR: failed to attach QP. status %d\n", - status); - } - mutex_unlock(&id_priv->qp_mutex); - event.status = status; event.param.ud.private_data = mc->context; if (!status) { @@ -4283,6 +4273,10 @@ int rdma_join_multicast(struct rdma_cm_id *id, struct sockaddr *addr, struct cma_multicast *mc; int ret;

+ /* Not supported for kernel QPs */ + if (WARN_ON(id->qp)) + return -EINVAL; + if (!id->device) return -EINVAL;

@@ -4337,11 +4331,6 @@ void rdma_leave_multicast(struct rdma_cm_id *id, struct sockaddr *addr) list_del(&mc->list); spin_unlock_irq(&id_priv->lock);

- if (id->qp) - ib_detach_mcast(id->qp, - &mc->multicast.ib->rec.mgid, - be16_to_cpu(mc->multicast.ib->rec.mlid)); - BUG_ON(id_priv->cma_dev->device != id->device);

if (rdma_cap_ib_mcast(id->device, id->port_num)) {

From: Adrian Hunter adrian.hunter@intel.com

[ Upstream commit 7d537a8d2e76bc4fc71e34545ceaa463ac2cd928 ]

A context_switch event can have no tid because pids can be detached from a task while the task is still running (in do_exit()). Note this won't happen with per-task contexts because then tracing stops at perf_event_exit_task()

If a task with no tid gets preempted, or a dying task gets preempted and its parent releases it, when it subsequently gets switched back in, Intel PT will not be able to determine what task is running and prints an error "context_switch event has no tid". However, it is not really an error because the task is in kernel space and the decoder can continue to decode successfully. Fix by changing the error to be only a logged message, and make allowance for tid == -1.

Example:

Using 5.9-rc4 with Preemptible Kernel (Low-Latency Desktop) e.g. $ uname -r 5.9.0-rc4 $ grep PREEMPT .config # CONFIG_PREEMPT_NONE is not set # CONFIG_PREEMPT_VOLUNTARY is not set CONFIG_PREEMPT=y CONFIG_PREEMPT_COUNT=y CONFIG_PREEMPTION=y CONFIG_PREEMPT_RCU=y CONFIG_PREEMPT_NOTIFIERS=y CONFIG_DRM_I915_PREEMPT_TIMEOUT=640 CONFIG_DEBUG_PREEMPT=y # CONFIG_PREEMPT_TRACER is not set # CONFIG_PREEMPTIRQ_DELAY_TEST is not set

Before:

$ cat forkit.c

#include <sys/types.h> #include <unistd.h> #include <sys/wait.h>

int main() { pid_t child; int status = 0;

child = fork(); if (child == 0) return 123; wait(&status); return 0; }

$ gcc -o forkit forkit.c $ sudo ~/bin/perf record --kcore -a -m,64M -e intel_pt/cyc/k & [1] 11016 $ taskset 2 ./forkit $ sudo pkill perf $ [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 17.262 MB perf.data ]

[1]+ Terminated sudo ~/bin/perf record --kcore -a -m,64M -e intel_pt/cyc/k $ sudo ~/bin/perf script --show-task-events --show-switch-events --itrace=iqqe-o -C 1 --ns | grep -C 2 forkit context_switch event has no tid taskset 11019 [001] 66663.270045029: 1 instructions:k: ffffffffb1d9f844 strnlen_user+0xb4 ([kernel.kallsyms]) taskset 11019 [001] 66663.270201816: 1 instructions:k: ffffffffb1a83121 unmap_page_range+0x561 ([kernel.kallsyms]) forkit 11019 [001] 66663.270327553: PERF_RECORD_COMM exec: forkit:11019/11019 forkit 11019 [001] 66663.270420028: 1 instructions:k: ffffffffb1db9537 __clear_user+0x27 ([kernel.kallsyms]) forkit 11019 [001] 66663.270648704: 1 instructions:k: ffffffffb18829e6 do_user_addr_fault+0xf6 ([kernel.kallsyms]) forkit 11019 [001] 66663.270833163: 1 instructions:k: ffffffffb230a825 irqentry_exit_to_user_mode+0x15 ([kernel.kallsyms]) forkit 11019 [001] 66663.271092359: 1 instructions:k: ffffffffb1aea3d9 lock_page_memcg+0x9 ([kernel.kallsyms]) forkit 11019 [001] 66663.271207092: PERF_RECORD_FORK(11020:11020):(11019:11019) forkit 11019 [001] 66663.271234775: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 11020/11020 forkit 11020 [001] 66663.271238407: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11019/11019 forkit 11020 [001] 66663.271312066: 1 instructions:k: ffffffffb1a88140 handle_mm_fault+0x10 ([kernel.kallsyms]) forkit 11020 [001] 66663.271476225: PERF_RECORD_EXIT(11020:11020):(11019:11019) forkit 11020 [001] 66663.271497488: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11019/11019 forkit 11019 [001] 66663.271500523: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11020/11020 forkit 11019 [001] 66663.271517241: 1 instructions:k: ffffffffb24012cd error_entry+0x6d ([kernel.kallsyms]) forkit 11019 [001] 66663.271664080: PERF_RECORD_EXIT(11019:11019):(1386:1386)

After:

$ sudo ~/bin/perf script --show-task-events --show-switch-events --itrace=iqqe-o -C 1 --ns | grep -C 2 forkit taskset 11019 [001] 66663.270045029: 1 instructions:k: ffffffffb1d9f844 strnlen_user+0xb4 ([kernel.kallsyms]) taskset 11019 [001] 66663.270201816: 1 instructions:k: ffffffffb1a83121 unmap_page_range+0x561 ([kernel.kallsyms]) forkit 11019 [001] 66663.270327553: PERF_RECORD_COMM exec: forkit:11019/11019 forkit 11019 [001] 66663.270420028: 1 instructions:k: ffffffffb1db9537 __clear_user+0x27 ([kernel.kallsyms]) forkit 11019 [001] 66663.270648704: 1 instructions:k: ffffffffb18829e6 do_user_addr_fault+0xf6 ([kernel.kallsyms]) forkit 11019 [001] 66663.270833163: 1 instructions:k: ffffffffb230a825 irqentry_exit_to_user_mode+0x15 ([kernel.kallsyms]) forkit 11019 [001] 66663.271092359: 1 instructions:k: ffffffffb1aea3d9 lock_page_memcg+0x9 ([kernel.kallsyms]) forkit 11019 [001] 66663.271207092: PERF_RECORD_FORK(11020:11020):(11019:11019) forkit 11019 [001] 66663.271234775: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: 11020/11020 forkit 11020 [001] 66663.271238407: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11019/11019 forkit 11020 [001] 66663.271312066: 1 instructions:k: ffffffffb1a88140 handle_mm_fault+0x10 ([kernel.kallsyms]) forkit 11020 [001] 66663.271476225: PERF_RECORD_EXIT(11020:11020):(11019:11019) forkit 11020 [001] 66663.271497488: PERF_RECORD_SWITCH_CPU_WIDE OUT preempt next pid/tid: 11019/11019 forkit 11019 [001] 66663.271500523: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11020/11020 forkit 11019 [001] 66663.271517241: 1 instructions:k: ffffffffb24012cd error_entry+0x6d ([kernel.kallsyms]) forkit 11019 [001] 66663.271664080: PERF_RECORD_EXIT(11019:11019):(1386:1386) forkit 11019 [001] 66663.271688752: PERF_RECORD_SWITCH_CPU_WIDE OUT next pid/tid: -1/-1 :-1 -1 [001] 66663.271692086: PERF_RECORD_SWITCH_CPU_WIDE IN prev pid/tid: 11019/11019 :-1 -1 [001] 66663.271707466: 1 instructions:k: ffffffffb18eb096 update_load_avg+0x306 ([kernel.kallsyms])

Fixes: 86c2786994bd7c ("perf intel-pt: Add support for PERF_RECORD_SWITCH") Signed-off-by: Adrian Hunter adrian.hunter@intel.com Cc: Andi Kleen ak@linux.intel.com Cc: Jiri Olsa jolsa@redhat.com Cc: Yu-cheng Yu yu-cheng.yu@intel.com Link: http://lore.kernel.org/lkml/20200909084923.9096-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- tools/perf/util/intel-pt.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index ff2c41ea94c8..2434a0014491 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -876,6 +876,8 @@ static void intel_pt_set_pid_tid_cpu(struct intel_pt *pt,

if (queue->tid == -1 || pt->have_sched_switch) { ptq->tid = machine__get_current_tid(pt->machine, ptq->cpu); + if (ptq->tid == -1) + ptq->pid = -1; thread__zput(ptq->thread); }

@@ -1915,10 +1917,8 @@ static int intel_pt_context_switch(struct intel_pt *pt, union perf_event *event, tid = sample->tid; }

- if (tid == -1) { - pr_err("context_switch event has no tid\n"); - return -EINVAL; - } + if (tid == -1) + intel_pt_log("context_switch event has no tid\n");

intel_pt_log("context_switch: cpu %d pid %d tid %d time %"PRIu64" tsc %#"PRIx64"\n", cpu, pid, tid, sample->time, perf_time_to_tsc(sample->time,

From: Weihang Li liweihang@huawei.com

[ Upstream commit 05df49279f8926178ecb3ce88e61b63104cd6293 ]

The sq_sig_type field should be filled when querying QP, or the users may get a wrong value.

Fixes: 926a01dc000d ("RDMA/hns: Add QP operations support for hip08 SoC") Link: https://lore.kernel.org/r/1600509802-44382-9-git-send-email-liweihang@huawei... Signed-off-by: Weihang Li liweihang@huawei.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index e7efd37b7734..a8c3fc2f3959 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -5414,6 +5414,7 @@ static int hns_roce_v2_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, }

qp_init_attr->cap = qp_attr->cap; + qp_init_attr->sq_sig_type = hr_qp->sq_signal_bits;

out: mutex_unlock(&hr_qp->mutex);

From: Leon Romanovsky leonro@nvidia.com

[ Upstream commit a4947e84f23474803b62a2759b5808147e4e15f9 ]

The various array_size functions use SIZE_MAX define, but missed limits.h causes to failure to compile code that needs overflow.h.

In file included from drivers/infiniband/core/uverbs_std_types_device.c:6: ./include/linux/overflow.h: In function 'array_size': ./include/linux/overflow.h:258:10: error: 'SIZE_MAX' undeclared (first use in this function) 258 | return SIZE_MAX; | ^~~~~~~~

Fixes: 610b15c50e86 ("overflow.h: Add allocation size calculation helpers") Link: https://lore.kernel.org/r/20200913102928.134985-1-leon@kernel.org Signed-off-by: Leon Romanovsky leonro@nvidia.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/overflow.h | 1 + 1 file changed, 1 insertion(+)

diff --git a/include/linux/overflow.h b/include/linux/overflow.h index 15eb85de9226..4564a175e681 100644 --- a/include/linux/overflow.h +++ b/include/linux/overflow.h @@ -3,6 +3,7 @@ #define __LINUX_OVERFLOW_H

#include <linux/compiler.h> +#include <linux/limits.h>

/* * In the fallback code below, we need to compute the minimum and

From: Kajol Jain kjain@linux.ibm.com

[ Upstream commit 0f9866f7e85765bbda86666df56c92f377c3bc10 ]

Commit 9e9f60108423f ("powerpc/perf/{hv-gpci, hv-common}: generate requests with counters annotated") adds a framework for defining gpci counters. In this patch, they adds starting_index value as '0xffffffffffffffff'. which is wrong as starting_index is of size 32 bits.

Because of this, incase we try to run hv-gpci event we get error.

In power9 machine:

command#: perf stat -e hv_gpci/system_tlbie_count_and_time_tlbie_instructions_issued/ -C 0 -I 1000 event syntax error: '..bie_count_and_time_tlbie_instructions_issued/' ___ value too big for format, maximum is 4294967295

This patch fix this issue and changes starting_index value to '0xffffffff'

After this patch:

command#: perf stat -e hv_gpci/system_tlbie_count_and_time_tlbie_instructions_issued/ -C 0 -I 1000 1.000085786 1,024 hv_gpci/system_tlbie_count_and_time_tlbie_instructions_issued/ 2.000287818 1,024 hv_gpci/system_tlbie_count_and_time_tlbie_instructions_issued/ 2.439113909 17,408 hv_gpci/system_tlbie_count_and_time_tlbie_instructions_issued/

Fixes: 9e9f60108423 ("powerpc/perf/{hv-gpci, hv-common}: generate requests with counters annotated") Signed-off-by: Kajol Jain kjain@linux.ibm.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20201003074943.338618-1-kjain@linux.ibm.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/perf/hv-gpci-requests.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/perf/hv-gpci-requests.h b/arch/powerpc/perf/hv-gpci-requests.h index e608f9db12dd..8965b4463d43 100644 --- a/arch/powerpc/perf/hv-gpci-requests.h +++ b/arch/powerpc/perf/hv-gpci-requests.h @@ -95,7 +95,7 @@ REQUEST(__field(0, 8, partition_id)

#define REQUEST_NAME system_performance_capabilities #define REQUEST_NUM 0x40 -#define REQUEST_IDX_KIND "starting_index=0xffffffffffffffff" +#define REQUEST_IDX_KIND "starting_index=0xffffffff" #include I(REQUEST_BEGIN) REQUEST(__field(0, 1, perf_collect_privileged) __field(0x1, 1, capability_mask) @@ -223,7 +223,7 @@ REQUEST(__field(0, 2, partition_id)

#define REQUEST_NAME system_hypervisor_times #define REQUEST_NUM 0xF0 -#define REQUEST_IDX_KIND "starting_index=0xffffffffffffffff" +#define REQUEST_IDX_KIND "starting_index=0xffffffff" #include I(REQUEST_BEGIN) REQUEST(__count(0, 8, time_spent_to_dispatch_virtual_processors) __count(0x8, 8, time_spent_processing_virtual_processor_timers) @@ -234,7 +234,7 @@ REQUEST(__count(0, 8, time_spent_to_dispatch_virtual_processors)

#define REQUEST_NAME system_tlbie_count_and_time #define REQUEST_NUM 0xF4 -#define REQUEST_IDX_KIND "starting_index=0xffffffffffffffff" +#define REQUEST_IDX_KIND "starting_index=0xffffffff" #include I(REQUEST_BEGIN) REQUEST(__count(0, 8, tlbie_instructions_issued) /*

From: Colin Ian King colin.king@canonical.com

[ Upstream commit 8e71f694e0c819db39af2336f16eb9689f1ae53f ]

An incorrect sizeof is being used, struct rvt_ibport ** is not correct, it should be struct rvt_ibport *. Note that since ** is the same size as * this is not causing any issues. Improve this fix by using sizeof(*rdi->ports) as this allows us to not even reference the type of the pointer. Also remove line breaks as the entire statement can fit on one line.

Link: https://lore.kernel.org/r/20201008095204.82683-1-colin.king@canonical.com Addresses-Coverity: ("Sizeof not portable (SIZEOF_MISMATCH)") Fixes: ff6acd69518e ("IB/rdmavt: Add device structure allocation") Signed-off-by: Colin Ian King colin.king@canonical.com Reviewed-by: Ira Weiny ira.weiny@intel.com Acked-by: Dennis Dalessandro dennis.dalessandro@cornelisnetworks.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/sw/rdmavt/vt.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/infiniband/sw/rdmavt/vt.c b/drivers/infiniband/sw/rdmavt/vt.c index 17e4abc067af..541ee30727aa 100644 --- a/drivers/infiniband/sw/rdmavt/vt.c +++ b/drivers/infiniband/sw/rdmavt/vt.c @@ -95,9 +95,7 @@ struct rvt_dev_info *rvt_alloc_device(size_t size, int nports) if (!rdi) return rdi;

- rdi->ports = kcalloc(nports, - sizeof(struct rvt_ibport **), - GFP_KERNEL); + rdi->ports = kcalloc(nports, sizeof(*rdi->ports), GFP_KERNEL); if (!rdi->ports) ib_dealloc_device(&rdi->ibdev);

From: Tobias Jordan kernel@cdqe.de

[ Upstream commit 904542dc56524f921a6bab0639ff6249c01e775f ]

Whether crc32_be needs a lookup table is chosen based on CRC_LE_BITS. Obviously, the _be function should be governed by the _BE_ define.

This probably never pops up as it's hard to come up with a configuration where CRC_BE_BITS isn't the same as CRC_LE_BITS and as nobody is using bitwise CRC anyway.

Fixes: 46c5801eaf86 ("crc32: bolt on crc32c") Signed-off-by: Tobias Jordan kernel@cdqe.de Signed-off-by: Andrew Morton akpm@linux-foundation.org Cc: Krzysztof Kozlowski krzk@kernel.org Cc: Jonathan Corbet corbet@lwn.net Cc: Mauro Carvalho Chehab mchehab+huawei@kernel.org Link: https://lkml.kernel.org/r/20200923182122.GA3338@agrajag.zerfleddert.de Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- lib/crc32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/crc32.c b/lib/crc32.c index 4a20455d1f61..bf60ef26a45c 100644 --- a/lib/crc32.c +++ b/lib/crc32.c @@ -331,7 +331,7 @@ static inline u32 __pure crc32_be_generic(u32 crc, unsigned char const *p, return crc; }

-#if CRC_LE_BITS == 1 +#if CRC_BE_BITS == 1 u32 __pure crc32_be(u32 crc, unsigned char const *p, size_t len) { return crc32_be_generic(crc, p, len, NULL, CRC32_POLY_BE);

From: Souptick Joarder jrdr.linux@gmail.com

[ Upstream commit fa63f083b3492b5ed5332b8d7c90b03b5ef24a1d ]

rio_dma_transfer() attempts to clamp the return value of pin_user_pages_fast() to be >= 0. However, the attempt fails because nr_pages is overridden a few lines later, and restored to the undesirable -ERRNO value.

The return value is ultimately stored in nr_pages, which in turn is passed to unpin_user_pages(), which expects nr_pages >= 0, else, disaster.

Fix this by fixing the nesting of the assignment to nr_pages: nr_pages should be clamped to zero if pin_user_pages_fast() returns -ERRNO, or set to the return value of pin_user_pages_fast(), otherwise.

[jhubbard@nvidia.com: new changelog]

Fixes: e8de370188d09 ("rapidio: add mport char device driver") Signed-off-by: Souptick Joarder jrdr.linux@gmail.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Reviewed-by: Ira Weiny ira.weiny@intel.com Reviewed-by: John Hubbard jhubbard@nvidia.com Cc: Matthew Wilcox willy@infradead.org Cc: Matt Porter mporter@kernel.crashing.org Cc: Alexandre Bounine alex.bou9@gmail.com Cc: Gustavo A. R. Silva gustavoars@kernel.org Cc: Madhuparna Bhowmik madhuparnabhowmik10@gmail.com Cc: Dan Carpenter dan.carpenter@oracle.com Link: https://lkml.kernel.org/r/1600227737-20785-1-git-send-email-jrdr.linux@gmail... Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/rapidio/devices/rio_mport_cdev.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c index f36a8a5261a1..c3ca1cf0e1bb 100644 --- a/drivers/rapidio/devices/rio_mport_cdev.c +++ b/drivers/rapidio/devices/rio_mport_cdev.c @@ -875,15 +875,16 @@ rio_dma_transfer(struct file *filp, u32 transfer_mode, rmcd_error("get_user_pages_unlocked err=%ld", pinned); nr_pages = 0; - } else + } else { rmcd_error("pinned %ld out of %ld pages", pinned, nr_pages); + /* + * Set nr_pages up to mean "how many pages to unpin, in + * the error handler: + */ + nr_pages = pinned; + } ret = -EFAULT; - /* - * Set nr_pages up to mean "how many pages to unpin, in - * the error handler: - */ - nr_pages = pinned; goto err_pg; }

From: Jassi Brar jaswinder.singh@linaro.org

[ Upstream commit c7dacf5b0f32957b24ef29df1207dc2cd8307743 ]

If the txdone is done by polling, it is possible for msg_submit() to start the timer while txdone_hrtimer() callback is running. If the timer needs recheduling, it could already be enqueued by the time hrtimer_forward_now() is called, leading hrtimer to loudly complain.

WARNING: CPU: 3 PID: 74 at kernel/time/hrtimer.c:932 hrtimer_forward+0xc4/0x110 CPU: 3 PID: 74 Comm: kworker/u8:1 Not tainted 5.9.0-rc2-00236-gd3520067d01c-dirty #5 Hardware name: Libre Computer AML-S805X-AC (DT) Workqueue: events_freezable_power_ thermal_zone_device_check pstate: 20000085 (nzCv daIf -PAN -UAO BTYPE=--) pc : hrtimer_forward+0xc4/0x110 lr : txdone_hrtimer+0xf8/0x118 [...]

This can be fixed by not starting the timer from the callback path. Which requires the timer reloading as long as any message is queued on the channel, and not just when current tx is not done yet.

Fixes: 0cc67945ea59 ("mailbox: switch to hrtimer for tx_complete polling") Reported-by: Da Xue da@libre.computer Reviewed-by: Sudeep Holla sudeep.holla@arm.com Tested-by: Sudeep Holla sudeep.holla@arm.com Acked-by: Jerome Brunet jbrunet@baylibre.com Tested-by: Jerome Brunet jbrunet@baylibre.com Signed-off-by: Jassi Brar jaswinder.singh@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mailbox/mailbox.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/mailbox/mailbox.c b/drivers/mailbox/mailbox.c index 055c90b8253c..10a559cfb7ea 100644 --- a/drivers/mailbox/mailbox.c +++ b/drivers/mailbox/mailbox.c @@ -85,9 +85,12 @@ static void msg_submit(struct mbox_chan *chan) exit: spin_unlock_irqrestore(&chan->lock, flags);

- if (!err && (chan->txdone_method & TXDONE_BY_POLL)) - /* kick start the timer immediately to avoid delays */ - hrtimer_start(&chan->mbox->poll_hrt, 0, HRTIMER_MODE_REL); + /* kick start the timer immediately to avoid delays */ + if (!err && (chan->txdone_method & TXDONE_BY_POLL)) { + /* but only if not already active */ + if (!hrtimer_active(&chan->mbox->poll_hrt)) + hrtimer_start(&chan->mbox->poll_hrt, 0, HRTIMER_MODE_REL); + } }

static void tx_tick(struct mbox_chan *chan, int r) @@ -125,11 +128,10 @@ static enum hrtimer_restart txdone_hrtimer(struct hrtimer *hrtimer) struct mbox_chan *chan = &mbox->chans[i];

if (chan->active_req && chan->cl) { + resched = true; txdone = chan->mbox->ops->last_tx_done(chan); if (txdone) tx_tick(chan, 0); - else - resched = true; } }

From: Mark Tomlinson mark.tomlinson@alliedtelesis.co.nz

[ Upstream commit eb7eacaa5b9e4f665bd08d416c8f88e63d2f123c ]

The core interrupt code expects the irq_set_affinity call to update the effective affinity for the interrupt. This was not being done, so update iproc_msi_irq_set_affinity() to do so.

Link: https://lore.kernel.org/r/20200803035241.7737-1-mark.tomlinson@alliedtelesis... Fixes: 3bc2b2348835 ("PCI: iproc: Add iProc PCIe MSI support") Signed-off-by: Mark Tomlinson mark.tomlinson@alliedtelesis.co.nz Signed-off-by: Lorenzo Pieralisi lorenzo.pieralisi@arm.com Reviewed-by: Ray Jui ray.jui@broadcom.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/controller/pcie-iproc-msi.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/pci/controller/pcie-iproc-msi.c b/drivers/pci/controller/pcie-iproc-msi.c index 9deb56989d72..ea612382599c 100644 --- a/drivers/pci/controller/pcie-iproc-msi.c +++ b/drivers/pci/controller/pcie-iproc-msi.c @@ -209,15 +209,20 @@ static int iproc_msi_irq_set_affinity(struct irq_data *data, struct iproc_msi *msi = irq_data_get_irq_chip_data(data); int target_cpu = cpumask_first(mask); int curr_cpu; + int ret;

curr_cpu = hwirq_to_cpu(msi, data->hwirq); if (curr_cpu == target_cpu) - return IRQ_SET_MASK_OK_DONE; + ret = IRQ_SET_MASK_OK_DONE; + else { + /* steer MSI to the target CPU */ + data->hwirq = hwirq_to_canonical_hwirq(msi, data->hwirq) + target_cpu; + ret = IRQ_SET_MASK_OK; + }

- /* steer MSI to the target CPU */ - data->hwirq = hwirq_to_canonical_hwirq(msi, data->hwirq) + target_cpu; + irq_data_update_effective_affinity(data, cpumask_of(target_cpu));

- return IRQ_SET_MASK_OK; + return ret; }

static void iproc_msi_irq_compose_msi_msg(struct irq_data *data,

From: Hauke Mehrtens hauke@hauke-m.de

[ Upstream commit b39c0615d0667b3a6f2f5c4bf99ffadf3b518bb1 ]

dev_get_drvdata() is called in img_pwm_runtime_resume() before the driver data is set. When pm_runtime_enabled() returns false in img_pwm_probe() it calls img_pwm_runtime_resume() which results in a null pointer access.

This patch fixes the problem by setting the driver data earlier in the img_pwm_probe() function.

This crash was seen when booting the Imagination Technologies Creator Ci40 (Marduk) with kernel 5.4 in OpenWrt.

Fixes: e690ae526216 ("pwm: img: Add runtime PM") Signed-off-by: Hauke Mehrtens hauke@hauke-m.de Acked-by: Lee Jones lee.jones@linaro.org Signed-off-by: Thierry Reding thierry.reding@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pwm/pwm-img.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/pwm/pwm-img.c b/drivers/pwm/pwm-img.c index da72b2866e88..3b0a097ce2ab 100644 --- a/drivers/pwm/pwm-img.c +++ b/drivers/pwm/pwm-img.c @@ -280,6 +280,8 @@ static int img_pwm_probe(struct platform_device *pdev) return PTR_ERR(pwm->pwm_clk); }

+ platform_set_drvdata(pdev, pwm); + pm_runtime_set_autosuspend_delay(&pdev->dev, IMG_PWM_PM_TIMEOUT); pm_runtime_use_autosuspend(&pdev->dev); pm_runtime_enable(&pdev->dev); @@ -316,7 +318,6 @@ static int img_pwm_probe(struct platform_device *pdev) goto err_suspend; }

- platform_set_drvdata(pdev, pwm); return 0;

err_suspend:

From: Claudiu Beznea claudiu.beznea@microchip.com

[ Upstream commit 85d071e7f19a6a9abf30476b90b3819642568756 ]

SAMA5D2 datasheet specifies on chapter 33.22.8 (PMC Clock Generator Main Oscillator Register) that writing any value other than 0x37 on KEY field aborts the write operation. Use the key when selecting main clock parent.

Fixes: 27cb1c2083373 ("clk: at91: rework main clk implementation") Signed-off-by: Claudiu Beznea claudiu.beznea@microchip.com Reviewed-by: Alexandre Belloni alexandre.belloni@bootlin.com Link: https://lore.kernel.org/r/1598338751-20607-3-git-send-email-claudiu.beznea@m... Signed-off-by: Stephen Boyd sboyd@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/at91/clk-main.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/clk/at91/clk-main.c b/drivers/clk/at91/clk-main.c index 90988e7a5b47..2e7da9b379d4 100644 --- a/drivers/clk/at91/clk-main.c +++ b/drivers/clk/at91/clk-main.c @@ -517,12 +517,17 @@ static int clk_sam9x5_main_set_parent(struct clk_hw *hw, u8 index) return -EINVAL;

regmap_read(regmap, AT91_CKGR_MOR, &tmp); - tmp &= ~MOR_KEY_MASK;

if (index && !(tmp & AT91_PMC_MOSCSEL)) - regmap_write(regmap, AT91_CKGR_MOR, tmp | AT91_PMC_MOSCSEL); + tmp = AT91_PMC_MOSCSEL; else if (!index && (tmp & AT91_PMC_MOSCSEL)) - regmap_write(regmap, AT91_CKGR_MOR, tmp & ~AT91_PMC_MOSCSEL); + tmp = 0; + else + return 0; + + regmap_update_bits(regmap, AT91_CKGR_MOR, + AT91_PMC_MOSCSEL | MOR_KEY_MASK, + tmp | AT91_PMC_KEY);

while (!clk_sam9x5_main_ready(regmap)) cpu_relax();

From: Dinghao Liu dinghao.liu@zju.edu.cn

[ Upstream commit 5afb6d203d0293512aa2c6ae098274a2a4f6ed02 ]

When watchdog_kworker is NULL, we should free wd_data before the function returns to prevent memleak.

Fixes: 664a39236e718 ("watchdog: Introduce hardware maximum heartbeat in watchdog core") Signed-off-by: Dinghao Liu dinghao.liu@zju.edu.cn Reviewed-by: Guenter Roeck linux@roeck-us.net Link: https://lore.kernel.org/r/20200824024001.25474-1-dinghao.liu@zju.edu.cn Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Wim Van Sebroeck wim@linux-watchdog.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/watchdog/watchdog_dev.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c index 17d91eaceafb..ca8486a5850e 100644 --- a/drivers/watchdog/watchdog_dev.c +++ b/drivers/watchdog/watchdog_dev.c @@ -1007,8 +1007,10 @@ static int watchdog_cdev_register(struct watchdog_device *wdd) wd_data->wdd = wdd; wdd->wd_data = wd_data;

- if (IS_ERR_OR_NULL(watchdog_kworker)) + if (IS_ERR_OR_NULL(watchdog_kworker)) { + kfree(wd_data); return -ENODEV; + }

device_initialize(&wd_data->dev); wd_data->dev.devt = MKDEV(MAJOR(watchdog_devt), wdd->id);

From: Guenter Roeck linux@roeck-us.net

[ Upstream commit 08c619b4923056b5dd2d5045757468c76ad0e3fe ]

EFCH_PM_DECODEEN3 is supposed to access DECODEEN register bits 24..31, in other words the register at byte offset 3.

Cc: Jan Kiszka jan.kiszka@siemens.com Fixes: 887d2ec51e34b ("watchdog: sp5100_tco: Add support for recent FCH versions") Tested-by: Jan Kiszka jan.kiszka@siemens.com Link: https://lore.kernel.org/r/20200910163109.235136-1-linux@roeck-us.net Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Wim Van Sebroeck wim@linux-watchdog.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/watchdog/sp5100_tco.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/watchdog/sp5100_tco.h b/drivers/watchdog/sp5100_tco.h index 87eaf357ae01..adf015aa4126 100644 --- a/drivers/watchdog/sp5100_tco.h +++ b/drivers/watchdog/sp5100_tco.h @@ -70,7 +70,7 @@ #define EFCH_PM_DECODEEN_WDT_TMREN BIT(7)

-#define EFCH_PM_DECODEEN3 0x00 +#define EFCH_PM_DECODEEN3 0x03 #define EFCH_PM_DECODEEN_SECOND_RES GENMASK(1, 0) #define EFCH_PM_WATCHDOG_DISABLE ((u8)GENMASK(3, 2))

From: "Darrick J. Wong" darrick.wong@oracle.com

[ Upstream commit af8c53c8bc087459b1aadd4c94805d8272358d79 ]

If userspace asked fsmap to try to count the number of entries, we cannot return more than UINT_MAX entries because fmh_entries is u32. Therefore, stop counting if we hit this limit or else we will waste time to return truncated results.

Fixes: 0c9ec4beecac ("ext4: support GETFSMAP ioctls") Signed-off-by: Darrick J. Wong darrick.wong@oracle.com Link: https://lore.kernel.org/r/20201001222148.GA49520@magnolia Signed-off-by: Theodore Ts'o tytso@mit.edu Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ext4/fsmap.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/fs/ext4/fsmap.c b/fs/ext4/fsmap.c index 4b99e2db95b8..6f3f245f3a80 100644 --- a/fs/ext4/fsmap.c +++ b/fs/ext4/fsmap.c @@ -108,6 +108,9 @@ static int ext4_getfsmap_helper(struct super_block *sb,

/* Are we just counting mappings? */ if (info->gfi_head->fmh_count == 0) { + if (info->gfi_head->fmh_entries == UINT_MAX) + return EXT4_QUERY_RANGE_ABORT; + if (rec_fsblk > info->gfi_next_fsblk) info->gfi_head->fmh_entries++;

From: Xiaoyang Xu xuxiaoyang2@huawei.com

[ Upstream commit 2e6cfd496f5b57034cf2aec738799571b5a52124 ]

pfn is not added to pfn_list when vfio_add_to_pfn_list fails. vfio_unpin_page_external will exit directly without calling vfio_iova_put_vfio_pfn. This will lead to a memory leak.

Fixes: a54eb55045ae ("vfio iommu type1: Add support for mediated devices") Signed-off-by: Xiaoyang Xu xuxiaoyang2@huawei.com [aw: simplified logic, add Fixes] Signed-off-by: Alex Williamson alex.williamson@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/vfio/vfio_iommu_type1.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 2bde1a098a29..5a106963dd08 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -640,7 +640,8 @@ static int vfio_iommu_type1_pin_pages(void *iommu_data,

ret = vfio_add_to_pfn_list(dma, iova, phys_pfn[i]); if (ret) { - vfio_unpin_page_external(dma, iova, do_accounting); + if (put_pfn(phys_pfn[i], dma->prot) && do_accounting) + vfio_lock_acct(dma, -1, true); goto pin_unwind; } }

From: Dan Carpenter dan.carpenter@oracle.com

[ Upstream commit 30df23c5ecdfb8da5b0bc17ceef67eff9e1b0957 ]

If imx6ul_tsc_init() fails then we need to clean up the clocks.

I reversed the "if (input_dev->users) {" condition to make the code a bit simpler.

Fixes: 6cc527b05847 ("Input: imx6ul_tsc - propagate the errors") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Link: https://lore.kernel.org/r/20200905124942.GC183976@mwanda Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/input/touchscreen/imx6ul_tsc.c | 27 +++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-)

diff --git a/drivers/input/touchscreen/imx6ul_tsc.c b/drivers/input/touchscreen/imx6ul_tsc.c index c10fc594f94d..6bfe42a11452 100644 --- a/drivers/input/touchscreen/imx6ul_tsc.c +++ b/drivers/input/touchscreen/imx6ul_tsc.c @@ -538,20 +538,25 @@ static int __maybe_unused imx6ul_tsc_resume(struct device *dev)

mutex_lock(&input_dev->mutex);

- if (input_dev->users) { - retval = clk_prepare_enable(tsc->adc_clk); - if (retval) - goto out; - - retval = clk_prepare_enable(tsc->tsc_clk); - if (retval) { - clk_disable_unprepare(tsc->adc_clk); - goto out; - } + if (!input_dev->users) + goto out;

- retval = imx6ul_tsc_init(tsc); + retval = clk_prepare_enable(tsc->adc_clk); + if (retval) + goto out; + + retval = clk_prepare_enable(tsc->tsc_clk); + if (retval) { + clk_disable_unprepare(tsc->adc_clk); + goto out; }

+ retval = imx6ul_tsc_init(tsc); + if (retval) { + clk_disable_unprepare(tsc->tsc_clk); + clk_disable_unprepare(tsc->adc_clk); + goto out; + } out: mutex_unlock(&input_dev->mutex); return retval;

From: Krzysztof Kozlowski krzk@kernel.org

[ Upstream commit 7d50f6656dacf085a00beeedbc48b19a37d17881 ]

platform_get_irq() returns -ERRNO on error. In such case comparison to 0 would pass the check.

Fixes: 60214f058f44 ("Input: ep93xx_keypad - update driver to new core support") Signed-off-by: Krzysztof Kozlowski krzk@kernel.org Link: https://lore.kernel.org/r/20200828145744.3636-1-krzk@kernel.org Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/input/keyboard/ep93xx_keypad.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/keyboard/ep93xx_keypad.c b/drivers/input/keyboard/ep93xx_keypad.c index f77b295e0123..01788a78041b 100644 --- a/drivers/input/keyboard/ep93xx_keypad.c +++ b/drivers/input/keyboard/ep93xx_keypad.c @@ -257,8 +257,8 @@ static int ep93xx_keypad_probe(struct platform_device *pdev) }

keypad->irq = platform_get_irq(pdev, 0); - if (!keypad->irq) { - err = -ENXIO; + if (keypad->irq < 0) { + err = keypad->irq; goto failed_free; }

From: Krzysztof Kozlowski krzk@kernel.org

[ Upstream commit c277e1f0dc3c7d7b5b028e20dd414df241642036 ]

platform_get_irq() returns -ERRNO on error. In such case casting to unsigned and comparing to 0 would pass the check.

Fixes: 7abf38d6d13c ("Input: twl4030-keypad - add device tree support") Reported-by: kernel test robot lkp@intel.com Signed-off-by: Krzysztof Kozlowski krzk@kernel.org Link: https://lore.kernel.org/r/20200828145744.3636-3-krzk@kernel.org Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/input/keyboard/twl4030_keypad.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/input/keyboard/twl4030_keypad.c b/drivers/input/keyboard/twl4030_keypad.c index f9f98ef1d98e..8677dbe0fd20 100644 --- a/drivers/input/keyboard/twl4030_keypad.c +++ b/drivers/input/keyboard/twl4030_keypad.c @@ -63,7 +63,7 @@ struct twl4030_keypad { bool autorepeat; unsigned int n_rows; unsigned int n_cols; - unsigned int irq; + int irq;

struct device *dbg_dev; struct input_dev *input; @@ -389,10 +389,8 @@ static int twl4030_kp_probe(struct platform_device *pdev) }

kp->irq = platform_get_irq(pdev, 0); - if (!kp->irq) { - dev_err(&pdev->dev, "no keyboard irq assigned\n"); - return -EINVAL; - } + if (kp->irq < 0) + return kp->irq;

error = matrix_keypad_build_keymap(keymap_data, NULL, TWL4030_MAX_ROWS,

From: Robert Hoo robert.hu@linux.intel.com

[ Upstream commit a9e2e0ae686094571378c72d8146b5a1a92d0652 ]

Per Intel's SDM, RDPID takes a #UD if it is unsupported, which is more or less what KVM is emulating when MSR_TSC_AUX is not available. In fact, there are no scenarios in which RDPID is supposed to #GP.

Fixes: fb6d4d340e ("KVM: x86: emulate RDPID") Signed-off-by: Robert Hoo robert.hu@linux.intel.com Message-Id: 1598581422-76264-1-git-send-email-robert.hu@linux.intel.com Reviewed-by: Jim Mattson jmattson@google.com Signed-off-by: Paolo Bonzini pbonzini@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/x86/kvm/emulate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 4daad2495cce..f2aa510c953d 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -3570,7 +3570,7 @@ static int em_rdpid(struct x86_emulate_ctxt *ctxt) u64 tsc_aux = 0;

if (ctxt->ops->get_msr(ctxt, MSR_TSC_AUX, &tsc_aux)) - return emulate_gp(ctxt, 0); + return emulate_ud(ctxt); ctxt->dst.val = tsc_aux; return X86EMUL_CONTINUE; }

From: Pablo Neira Ayuso pablo@netfilter.org

[ Upstream commit c77761c8a59405cb7aa44188b30fffe13fbdd02d ]

Similar to 7980d2eabde8 ("ipvs: clear skb->tstamp in forwarding path"). fq qdisc requires tstamp to be cleared in forwarding path.

Fixes: 8203e2d844d3 ("net: clear skb->tstamp in forwarding paths") Fixes: fb420d5d91c1 ("tcp/fq: move back to CLOCK_MONOTONIC") Fixes: 80b14dee2bea ("net: Add a new socket option for a future transmit time.") Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/netfilter/nf_dup_netdev.c | 1 + net/netfilter/nft_fwd_netdev.c | 1 + 2 files changed, 2 insertions(+)

diff --git a/net/netfilter/nf_dup_netdev.c b/net/netfilter/nf_dup_netdev.c index f4a566e67213..98d117f3340c 100644 --- a/net/netfilter/nf_dup_netdev.c +++ b/net/netfilter/nf_dup_netdev.c @@ -21,6 +21,7 @@ static void nf_do_netdev_egress(struct sk_buff *skb, struct net_device *dev) skb_push(skb, skb->mac_len);

skb->dev = dev; + skb->tstamp = 0; dev_queue_xmit(skb); }

diff --git a/net/netfilter/nft_fwd_netdev.c b/net/netfilter/nft_fwd_netdev.c index 649edbe77a20..10a12e094929 100644 --- a/net/netfilter/nft_fwd_netdev.c +++ b/net/netfilter/nft_fwd_netdev.c @@ -129,6 +129,7 @@ static void nft_fwd_neigh_eval(const struct nft_expr *expr, return;

skb->dev = dev; + skb->tstamp = 0; neigh_xmit(neigh_table, dev, addr, skb); out: regs->verdict.code = verdict;

From: Jernej Skrabec jernej.skrabec@siol.net

[ Upstream commit 3658a2b7f3e16c7053eb8d70657b94bb62c5a0f4 ]

DCDC1 regulator powers many different subsystems. While some of them can work at 3.0 V, some of them can not. For example, VCC-HDMI can only work between 3.24 V and 3.36 V. According to OS images provided by the board manufacturer this regulator should be set to 3.3 V.

Set DCDC1 and DCDC1SW to 3.3 V in order to fix this.

Fixes: da7ac948fa93 ("ARM: dts: sun8i: Add board dts file for Banana Pi M2 Ultra") Signed-off-by: Jernej Skrabec jernej.skrabec@siol.net Signed-off-by: Maxime Ripard maxime@cerno.tech Link: https://lore.kernel.org/r/20200824193649.978197-1-jernej.skrabec@siol.net Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts b/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts index c39b9169ea64..b2a773a718e1 100644 --- a/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts +++ b/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts @@ -206,16 +206,16 @@ };

&reg_dc1sw { - regulator-min-microvolt = <3000000>; - regulator-max-microvolt = <3000000>; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; regulator-name = "vcc-gmac-phy"; };

&reg_dcdc1 { regulator-always-on; - regulator-min-microvolt = <3000000>; - regulator-max-microvolt = <3000000>; - regulator-name = "vcc-3v0"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-name = "vcc-3v3"; };

&reg_dcdc2 {

From: YueHaibing yuehaibing@huawei.com

[ Upstream commit 13d029ee51da365aa9c859db0c7395129252bde8 ]

If CONFIG_OF is n, gcc fails:

drivers/memory/omap-gpmc.o: In function `gpmc_omap_onenand_set_timings': omap-gpmc.c:(.text+0x2a88): undefined reference to `gpmc_read_settings_dt'

Add gpmc_read_settings_dt() helper function, which zero the gpmc_settings so the caller doesn't proceed with random/invalid settings.

Fixes: a758f50f10cf ("mtd: onenand: omap2: Configure driver from DT") Signed-off-by: YueHaibing yuehaibing@huawei.com Acked-by: Roger Quadros rogerq@ti.com Link: https://lore.kernel.org/r/20200827125316.20780-1-yuehaibing@huawei.com Signed-off-by: Krzysztof Kozlowski krzk@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/memory/omap-gpmc.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c index f5a89e78b7b2..2ca507f3a58c 100644 --- a/drivers/memory/omap-gpmc.c +++ b/drivers/memory/omap-gpmc.c @@ -2278,6 +2278,10 @@ static void gpmc_probe_dt_children(struct platform_device *pdev) } } #else +void gpmc_read_settings_dt(struct device_node *np, struct gpmc_settings *p) +{ + memset(p, 0, sizeof(*p)); +} static int gpmc_probe_dt(struct platform_device *pdev) { return 0;

From: Stephan Gerhold stephan@gerhold.net

[ Upstream commit c2f0cbb57dbac6da3d38b47b5b96de0fe4e23884 ]

Tha parent node of "wcd_codec" specifies #address-cells = <1> and #size-cells = <0>, which means that each resource should be described by one cell for the address and size omitted.

However, wcd_codec currently lists 0x200 as second cell (probably the size of the resource). When parsing this would be treated like another memory resource - which is entirely wrong.

To quote the device tree specification [1]: "If the parent node specifies a value of 0 for #size-cells, the length field in the value of reg shall be omitted."

[1]: https://www.devicetree.org/specifications/

Fixes: 5582fcb3829f ("arm64: dts: apq8016-sbc: add analog audio support with multicodec") Signed-off-by: Stephan Gerhold stephan@gerhold.net Link: https://lore.kernel.org/r/20200915071221.72895-4-stephan@gerhold.net Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm64/boot/dts/qcom/pm8916.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/pm8916.dtsi b/arch/arm64/boot/dts/qcom/pm8916.dtsi index 196b1c0ceb9b..b968afa8da17 100644 --- a/arch/arm64/boot/dts/qcom/pm8916.dtsi +++ b/arch/arm64/boot/dts/qcom/pm8916.dtsi @@ -99,7 +99,7 @@

wcd_codec: codec@f000 { compatible = "qcom,pm8916-wcd-analog-codec"; - reg = <0xf000 0x200>; + reg = <0xf000>; reg-names = "pmic-codec-core"; clocks = <&gcc GCC_CODEC_DIGCODEC_CLK>; clock-names = "mclk";

From: Cristian Ciocaltea cristian.ciocaltea@gmail.com

[ Upstream commit 55f6c9931f7c32f19cf221211f099dfd8dab3af9 ]

The PPI interrupts for cortex-a9 were incorrectly specified, fix them.

Fixes: fdfe7f4f9d85 ("ARM: dts: Add Actions Semi S500 and LeMaker Guitar") Signed-off-by: Cristian Ciocaltea cristian.ciocaltea@gmail.com Reviewed-by: Peter Korsgaard peter@korsgaard.com Reviewed-by: Manivannan Sadhasivam manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam manivannan.sadhasivam@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/boot/dts/owl-s500.dtsi | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/owl-s500.dtsi b/arch/arm/boot/dts/owl-s500.dtsi index 43c9980a4260..75a76842c270 100644 --- a/arch/arm/boot/dts/owl-s500.dtsi +++ b/arch/arm/boot/dts/owl-s500.dtsi @@ -85,21 +85,21 @@ global_timer: timer@b0020200 { compatible = "arm,cortex-a9-global-timer"; reg = <0xb0020200 0x100>; - interrupts = <GIC_PPI 0 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>; + interrupts = <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>; status = "disabled"; };

twd_timer: timer@b0020600 { compatible = "arm,cortex-a9-twd-timer"; reg = <0xb0020600 0x20>; - interrupts = <GIC_PPI 2 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>; + interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>; status = "disabled"; };

twd_wdt: wdt@b0020620 { compatible = "arm,cortex-a9-twd-wdt"; reg = <0xb0020620 0xe0>; - interrupts = <GIC_PPI 3 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>; + interrupts = <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_EDGE_RISING)>; status = "disabled"; };

From: Vasant Hegde hegdevasant@linux.vnet.ibm.com

[ Upstream commit 0a43ae3e2beb77e3481d812834d33abe270768ab ]

Every dump reported by OPAL is exported to userspace through a sysfs interface and notified using kobject_uevent(). The userspace daemon (opal_errd) then reads the dump and acknowledges that the dump is saved safely to disk. Once acknowledged the kernel removes the respective sysfs file entry causing respective resources to be released including kobject.

However it's possible the userspace daemon may already be scanning dump entries when a new sysfs dump entry is created by the kernel. User daemon may read this new entry and ack it even before kernel can notify userspace about it through kobject_uevent() call. If that happens then we have a potential race between dump_ack_store->kobject_put() and kobject_uevent which can lead to use-after-free of a kernfs object resulting in a kernel crash.

This patch fixes this race by protecting the sysfs file creation/notification by holding a reference count on kobject until we safely send kobject_uevent().

The function create_dump_obj() returns the dump object which if used by caller function will end up in use-after-free problem again. However, the return value of create_dump_obj() function isn't being used today and there is no need as well. Hence change it to return void to make this fix complete.

Fixes: c7e64b9ce04a ("powerpc/powernv Platform dump interface") Signed-off-by: Vasant Hegde hegdevasant@linux.vnet.ibm.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20201017164210.264619-1-hegdevasant@linux.vnet.ibm... Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/platforms/powernv/opal-dump.c | 41 +++++++++++++++------- 1 file changed, 29 insertions(+), 12 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/opal-dump.c b/arch/powerpc/platforms/powernv/opal-dump.c index 198143833f00..1dc2122a3cf5 100644 --- a/arch/powerpc/platforms/powernv/opal-dump.c +++ b/arch/powerpc/platforms/powernv/opal-dump.c @@ -322,15 +322,14 @@ static ssize_t dump_attr_read(struct file *filep, struct kobject *kobj, return count; }

-static struct dump_obj *create_dump_obj(uint32_t id, size_t size, - uint32_t type) +static void create_dump_obj(uint32_t id, size_t size, uint32_t type) { struct dump_obj *dump; int rc;

dump = kzalloc(sizeof(*dump), GFP_KERNEL); if (!dump) - return NULL; + return;

dump->kobj.kset = dump_kset;

@@ -350,21 +349,39 @@ static struct dump_obj *create_dump_obj(uint32_t id, size_t size, rc = kobject_add(&dump->kobj, NULL, "0x%x-0x%x", type, id); if (rc) { kobject_put(&dump->kobj); - return NULL; + return; }

+ /* + * As soon as the sysfs file for this dump is created/activated there is + * a chance the opal_errd daemon (or any userspace) might read and + * acknowledge the dump before kobject_uevent() is called. If that + * happens then there is a potential race between + * dump_ack_store->kobject_put() and kobject_uevent() which leads to a + * use-after-free of a kernfs object resulting in a kernel crash. + * + * To avoid that, we need to take a reference on behalf of the bin file, + * so that our reference remains valid while we call kobject_uevent(). + * We then drop our reference before exiting the function, leaving the + * bin file to drop the last reference (if it hasn't already). + */ + + /* Take a reference for the bin file */ + kobject_get(&dump->kobj); rc = sysfs_create_bin_file(&dump->kobj, &dump->dump_attr); - if (rc) { + if (rc == 0) { + kobject_uevent(&dump->kobj, KOBJ_ADD); + + pr_info("%s: New platform dump. ID = 0x%x Size %u\n", + __func__, dump->id, dump->size); + } else { + /* Drop reference count taken for bin file */ kobject_put(&dump->kobj); - return NULL; }

- pr_info("%s: New platform dump. ID = 0x%x Size %u\n", - __func__, dump->id, dump->size); - - kobject_uevent(&dump->kobj, KOBJ_ADD); - - return dump; + /* Drop our reference */ + kobject_put(&dump->kobj); + return; }

static irqreturn_t process_dump(int irq, void *data)

From: Kaige Li likaige@loongson.cn

[ Upstream commit 44a0a3c17919db1498cebb02ecf3cf4abc1ade7b ]

The related system resources were not released when pci_set_dma_mask(), pci_set_consistent_dma_mask(), or pci_iomap() return error in the amd_ntb_init_pci() function. Add pci_release_regions() to fix it.

Fixes: a1b3695820aa ("NTB: Add support for AMD PCI-Express Non-Transparent Bridge") Signed-off-by: Kaige Li likaige@loongson.cn Signed-off-by: Jon Mason jdmason@kudzu.us Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/ntb/hw/amd/ntb_hw_amd.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/ntb/hw/amd/ntb_hw_amd.c b/drivers/ntb/hw/amd/ntb_hw_amd.c index ffc5a963e574..521a69f074d0 100644 --- a/drivers/ntb/hw/amd/ntb_hw_amd.c +++ b/drivers/ntb/hw/amd/ntb_hw_amd.c @@ -1036,6 +1036,7 @@ static int amd_ntb_init_pci(struct amd_ntb_dev *ndev,

err_dma_mask: pci_clear_master(pdev); + pci_release_regions(pdev); err_pci_regions: pci_disable_device(pdev); err_pci_enable:

From: Al Grant al.grant@foss.arm.com

[ Upstream commit f3d301c1f2f5676465cdf3259737ea19cc82731f ]

perf_event.h has macros that define the field offsets in the data_src bitmask in perf records. The SNOOPX and REMOTE offsets were both 37. These are distinct fields, and the bitfield layout in perf_mem_data_src confirms that SNOOPX should be at offset 38.

Fixes: 52839e653b5629bd ("perf tools: Add support for printing new mem_info encodings") Signed-off-by: Al Grant al.grant@foss.arm.com Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Reviewed-by: Andi Kleen ak@linux.intel.com Link: https://lkml.kernel.org/r/4ac9f5cc-4388-b34a-9999-418a4099415d@foss.arm.com Signed-off-by: Sasha Levin sashal@kernel.org --- include/uapi/linux/perf_event.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index f35eb72739c0..5fb4cdf37100 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -1079,7 +1079,7 @@ union perf_mem_data_src {

#define PERF_MEM_SNOOPX_FWD 0x01 /* forward */ /* 1 free */ -#define PERF_MEM_SNOOPX_SHIFT 37 +#define PERF_MEM_SNOOPX_SHIFT 38

/* locked instruction */ #define PERF_MEM_LOCK_NA 0x01 /* not available */

From: Tetsuo Handa penguin-kernel@I-love.SAKURA.ne.jp

[ Upstream commit f4ac712e4fe009635344b9af5d890fe25fcc8c0d ]

syzbot is reporting unkillable task [1], for the caller is failing to handle a corrupted filesystem image which attempts to access beyond the end of the device. While we need to fix the caller, flooding the console with handle_bad_sector() message is unlikely useful.

[1] https://syzkaller.appspot.com/bug?id=f1f49fb971d7a3e01bd8ab8cff2ff4572ccf309...

Signed-off-by: Tetsuo Handa penguin-kernel@I-love.SAKURA.ne.jp Reviewed-by: Christoph Hellwig hch@lst.de Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- block/blk-core.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c index 865ed2e24c84..511fd7c77bf1 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -2122,11 +2122,10 @@ static void handle_bad_sector(struct bio *bio, sector_t maxsector) { char b[BDEVNAME_SIZE];

- printk(KERN_INFO "attempt to access beyond end of device\n"); - printk(KERN_INFO "%s: rw=%d, want=%Lu, limit=%Lu\n", - bio_devname(bio, b), bio->bi_opf, - (unsigned long long)bio_end_sector(bio), - (long long)maxsector); + pr_info_ratelimited("attempt to access beyond end of device\n" + "%s: rw=%d, want=%llu, limit=%llu\n", + bio_devname(bio, b), bio->bi_opf, + bio_end_sector(bio), maxsector); }

#ifdef CONFIG_FAIL_MAKE_REQUEST

From: Pavel Machek pavel@ucw.cz

[ Upstream commit b28e32798c78a346788d412f1958f36bb760ec03 ]

Fix memory leak in node_probe.

Signed-off-by: Pavel Machek (CIP) pavel@denx.de Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/firewire/firedtv-fw.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/media/firewire/firedtv-fw.c b/drivers/media/firewire/firedtv-fw.c index eaf94b817dbc..2ac9d24d3f0c 100644 --- a/drivers/media/firewire/firedtv-fw.c +++ b/drivers/media/firewire/firedtv-fw.c @@ -271,8 +271,10 @@ static int node_probe(struct fw_unit *unit, const struct ieee1394_device_id *id)

name_len = fw_csr_string(unit->directory, CSR_MODEL, name, sizeof(name)); - if (name_len < 0) - return name_len; + if (name_len < 0) { + err = name_len; + goto fail_free; + } for (i = ARRAY_SIZE(model_names); --i; ) if (strlen(model_names[i]) <= name_len && strncmp(name, model_names[i], name_len) == 0)

From: Aditya Pakki pakki001@umn.edu

[ Upstream commit 57cc666d36adc7b45e37ba4cd7bc4e44ec4c43d7 ]

delta_run_work() calls delta_get_sync() that increments the reference counter. In case of failure, decrement the reference count by calling delta_put_autosuspend().

Signed-off-by: Aditya Pakki pakki001@umn.edu Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/platform/sti/delta/delta-v4l2.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/sti/delta/delta-v4l2.c b/drivers/media/platform/sti/delta/delta-v4l2.c index 0b42acd4e3a6..53dc6da2b09e 100644 --- a/drivers/media/platform/sti/delta/delta-v4l2.c +++ b/drivers/media/platform/sti/delta/delta-v4l2.c @@ -954,8 +954,10 @@ static void delta_run_work(struct work_struct *work) /* enable the hardware */ if (!dec->pm) { ret = delta_get_sync(ctx); - if (ret) + if (ret) { + delta_put_autosuspend(ctx); goto err; + } }

/* decode this access unit */

From: Qiushi Wu wu000273@umn.edu

[ Upstream commit 7ef64ceea0008c17e94a8a2c60c5d6d46f481996 ]

On calling pm_runtime_get_sync() the reference count of the device is incremented. In case of failure, decrement the reference count before returning the error.

Signed-off-by: Qiushi Wu wu000273@umn.edu Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/platform/exynos4-is/fimc-isp.c | 4 +++- drivers/media/platform/exynos4-is/fimc-lite.c | 2 +- 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/exynos4-is/fimc-isp.c b/drivers/media/platform/exynos4-is/fimc-isp.c index 9a48c0f69320..1dbebdc1c2f8 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp.c +++ b/drivers/media/platform/exynos4-is/fimc-isp.c @@ -311,8 +311,10 @@ static int fimc_isp_subdev_s_power(struct v4l2_subdev *sd, int on)

if (on) { ret = pm_runtime_get_sync(&is->pdev->dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_put(&is->pdev->dev); return ret; + } set_bit(IS_ST_PWR_ON, &is->state);

ret = fimc_is_start_firmware(is); diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c index 70d5f5586a5d..10fe7d2e8790 100644 --- a/drivers/media/platform/exynos4-is/fimc-lite.c +++ b/drivers/media/platform/exynos4-is/fimc-lite.c @@ -480,7 +480,7 @@ static int fimc_lite_open(struct file *file) set_bit(ST_FLITE_IN_USE, &fimc->state); ret = pm_runtime_get_sync(&fimc->pdev->dev); if (ret < 0) - goto unlock; + goto err_pm;

ret = v4l2_fh_open(file); if (ret < 0)

From: Qiushi Wu wu000273@umn.edu

[ Upstream commit 64157b2cb1940449e7df2670e85781c690266588 ]

pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code, causing incorrect ref count if pm_runtime_put_noidle() is not called in error handling paths. Thus call pm_runtime_put_noidle() if pm_runtime_get_sync() fails.

Signed-off-by: Qiushi Wu wu000273@umn.edu Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/platform/exynos4-is/mipi-csis.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/exynos4-is/mipi-csis.c b/drivers/media/platform/exynos4-is/mipi-csis.c index b4e28a299e26..efab3ebc6756 100644 --- a/drivers/media/platform/exynos4-is/mipi-csis.c +++ b/drivers/media/platform/exynos4-is/mipi-csis.c @@ -513,8 +513,10 @@ static int s5pcsis_s_stream(struct v4l2_subdev *sd, int enable) if (enable) { s5pcsis_clear_counters(state); ret = pm_runtime_get_sync(&state->pdev->dev); - if (ret && ret != 1) + if (ret && ret != 1) { + pm_runtime_put_noidle(&state->pdev->dev); return ret; + } }

mutex_lock(&state->lock);

From: Dinghao Liu dinghao.liu@zju.edu.cn

[ Upstream commit dafa3605fe60d5a61239d670919b2a36e712481e ]

pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced.

Also, call pm_runtime_disable() when pm_runtime_get_sync() returns an error code.

Signed-off-by: Dinghao Liu dinghao.liu@zju.edu.cn Reviewed-by: Sylwester Nawrocki snawrocki@kernel.org Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/platform/s3c-camif/camif-core.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/s3c-camif/camif-core.c b/drivers/media/platform/s3c-camif/camif-core.c index 79bc0ef6bb41..8d8ed72bd0aa 100644 --- a/drivers/media/platform/s3c-camif/camif-core.c +++ b/drivers/media/platform/s3c-camif/camif-core.c @@ -476,7 +476,7 @@ static int s3c_camif_probe(struct platform_device *pdev)

ret = camif_media_dev_init(camif); if (ret < 0) - goto err_alloc; + goto err_pm;

ret = camif_register_sensor(camif); if (ret < 0) @@ -510,10 +510,9 @@ static int s3c_camif_probe(struct platform_device *pdev) media_device_unregister(&camif->media_dev); media_device_cleanup(&camif->media_dev); camif_unregister_media_entities(camif); -err_alloc: +err_pm: pm_runtime_put(dev); pm_runtime_disable(dev); -err_pm: camif_clk_put(camif); err_clk: s3c_camif_unregister_subdev(camif);

From: Dinghao Liu dinghao.liu@zju.edu.cn

[ Upstream commit dbd2f2dc025f9be8ae063e4f270099677238f620 ]

pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced.

Signed-off-by: Dinghao Liu dinghao.liu@zju.edu.cn Reviewed-by: Fabien Dessenne fabien.dessenne@st.com Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/platform/sti/bdisp/bdisp-v4l2.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/media/platform/sti/bdisp/bdisp-v4l2.c b/drivers/media/platform/sti/bdisp/bdisp-v4l2.c index 40c4eef71c34..00f6e3f06dac 100644 --- a/drivers/media/platform/sti/bdisp/bdisp-v4l2.c +++ b/drivers/media/platform/sti/bdisp/bdisp-v4l2.c @@ -1371,7 +1371,7 @@ static int bdisp_probe(struct platform_device *pdev) ret = pm_runtime_get_sync(dev); if (ret < 0) { dev_err(dev, "failed to set PM\n"); - goto err_dbg; + goto err_pm; }

/* Filters */ @@ -1399,7 +1399,6 @@ static int bdisp_probe(struct platform_device *pdev) bdisp_hw_free_filters(bdisp->dev); err_pm: pm_runtime_put(dev); -err_dbg: bdisp_debugfs_remove(bdisp); err_v4l2: v4l2_device_unregister(&bdisp->v4l2_dev);

From: Adam Goode agoode@google.com

[ Upstream commit 8a652a17e3c005dcdae31b6c8fdf14382a29cbbe ]

bFrameIndex and bFormatIndex can be negotiated by the camera during probing, resulting in the camera choosing a different format than expected. v4l2 can already accommodate such changes, but the code was not updating the proper fields.

Without such a change, v4l2 would potentially interpret the payload incorrectly, causing corrupted output. This was happening on the Elgato HD60 S+, which currently always renegotiates to format 1.

As an aside, the Elgato firmware is buggy and should not be renegotating, but it is still a valid thing for the camera to do. Both macOS and Windows will properly probe and read uncorrupted images from this camera.

With this change, both qv4l2 and chromium can now read uncorrupted video from the Elgato HD60 S+.

[Add blank lines, remove periods at the of messages]

Signed-off-by: Adam Goode agoode@google.com Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/usb/uvc/uvc_v4l2.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)

diff --git a/drivers/media/usb/uvc/uvc_v4l2.c b/drivers/media/usb/uvc/uvc_v4l2.c index 18a7384b50ee..0921c95a1dca 100644 --- a/drivers/media/usb/uvc/uvc_v4l2.c +++ b/drivers/media/usb/uvc/uvc_v4l2.c @@ -252,11 +252,41 @@ static int uvc_v4l2_try_format(struct uvc_streaming *stream, if (ret < 0) goto done;

+ /* After the probe, update fmt with the values returned from + * negotiation with the device. + */ + for (i = 0; i < stream->nformats; ++i) { + if (probe->bFormatIndex == stream->format[i].index) { + format = &stream->format[i]; + break; + } + } + + if (i == stream->nformats) { + uvc_trace(UVC_TRACE_FORMAT, "Unknown bFormatIndex %u\n", + probe->bFormatIndex); + return -EINVAL; + } + + for (i = 0; i < format->nframes; ++i) { + if (probe->bFrameIndex == format->frame[i].bFrameIndex) { + frame = &format->frame[i]; + break; + } + } + + if (i == format->nframes) { + uvc_trace(UVC_TRACE_FORMAT, "Unknown bFrameIndex %u\n", + probe->bFrameIndex); + return -EINVAL; + } + fmt->fmt.pix.width = frame->wWidth; fmt->fmt.pix.height = frame->wHeight; fmt->fmt.pix.field = V4L2_FIELD_NONE; fmt->fmt.pix.bytesperline = uvc_v4l2_get_bytesperline(format, frame); fmt->fmt.pix.sizeimage = probe->dwMaxVideoFrameSize; + fmt->fmt.pix.pixelformat = format->fcc; fmt->fmt.pix.colorspace = format->colorspace; fmt->fmt.pix.priv = 0;

From: Mauro Carvalho Chehab mchehab+huawei@kernel.org

[ Upstream commit 15a36aae1ec1c1f17149b6113b92631791830740 ]

As reported by smatch: drivers/media/pci/saa7134//saa7134-tvaudio.c:686 saa_dsp_writel() warn: should 'reg << 2' be a 64 bit type?

On a 64-bits Kernel, the shift might be bigger than 32 bits.

In real, this should never happen, but let's shut up the warning.

Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/pci/saa7134/saa7134-tvaudio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/media/pci/saa7134/saa7134-tvaudio.c b/drivers/media/pci/saa7134/saa7134-tvaudio.c index 68d400e1e240..8c3da6f7a60f 100644 --- a/drivers/media/pci/saa7134/saa7134-tvaudio.c +++ b/drivers/media/pci/saa7134/saa7134-tvaudio.c @@ -693,7 +693,8 @@ int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value) { int err;

- audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", reg << 2, value); + audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", + (reg << 2) & 0xffffffff, value); err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR); if (err < 0) return err;

From: Dinghao Liu dinghao.liu@zju.edu.cn

[ Upstream commit bbe516e976fce538db96bd2b7287df942faa14a3 ]

pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. For other error paths after this call, things are the same.

Fix this by adding pm_runtime_put_noidle() after 'err_runtime_disable' label. But in this case, the error path after pm_runtime_put_sync() will decrease PM usage counter twice. Thus add an extra pm_runtime_get_noresume() in this path to balance PM counter.

Signed-off-by: Dinghao Liu dinghao.liu@zju.edu.cn Signed-off-by: Mauro Carvalho Chehab mchehab+huawei@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/media/platform/qcom/venus/core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c index 60069869596c..168f5af6abcc 100644 --- a/drivers/media/platform/qcom/venus/core.c +++ b/drivers/media/platform/qcom/venus/core.c @@ -321,8 +321,10 @@ static int venus_probe(struct platform_device *pdev) goto err_dev_unregister;

ret = pm_runtime_put_sync(dev); - if (ret) + if (ret) { + pm_runtime_get_noresume(dev); goto err_dev_unregister; + }

return 0;

@@ -333,6 +335,7 @@ static int venus_probe(struct platform_device *pdev) err_venus_shutdown: venus_shutdown(dev); err_runtime_disable: + pm_runtime_put_noidle(dev); pm_runtime_set_suspended(dev); pm_runtime_disable(dev); hfi_destroy(core);

From: Cong Wang xiyou.wangcong@gmail.com

[ Upstream commit fdafed459998e2be0e877e6189b24cb7a0183224 ]

GRE tunnel has its own header_ops, ipgre_header_ops, and sets it conditionally. When it is set, it assumes the outer IP header is already created before ipgre_xmit().

This is not true when we send packets through a raw packet socket, where L2 headers are supposed to be constructed by user. Packet socket calls dev_validate_header() to validate the header. But GRE tunnel does not set dev->hard_header_len, so that check can be simply bypassed, therefore uninit memory could be passed down to ipgre_xmit(). Similar for dev->needed_headroom.

dev->hard_header_len is supposed to be the length of the header created by dev->header_ops->create(), so it should be used whenever header_ops is set, and dev->needed_headroom should be used when it is not set.

Reported-and-tested-by: syzbot+4a2c52677a8a1aa283cb@syzkaller.appspotmail.com Cc: William Tu u9012063@gmail.com Acked-by: Willem de Bruijn willemb@google.com Signed-off-by: Cong Wang xiyou.wangcong@gmail.com Acked-by: Xie He xie.he.0141@gmail.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/ipv4/ip_gre.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index ffcb5983107d..de6f89511a21 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -680,9 +680,7 @@ static netdev_tx_t ipgre_xmit(struct sk_buff *skb, }

if (dev->header_ops) { - /* Need space for new headers */ - if (skb_cow_head(skb, dev->needed_headroom - - (tunnel->hlen + sizeof(struct iphdr)))) + if (skb_cow_head(skb, 0)) goto free_skb;

tnl_params = (const struct iphdr *)skb->data; @@ -800,7 +798,11 @@ static void ipgre_link_update(struct net_device *dev, bool set_mtu) len = tunnel->tun_hlen - len; tunnel->hlen = tunnel->hlen + len;

- dev->needed_headroom = dev->needed_headroom + len; + if (dev->header_ops) + dev->hard_header_len += len; + else + dev->needed_headroom += len; + if (set_mtu) dev->mtu = max_t(int, dev->mtu - len, 68);

@@ -1003,6 +1005,7 @@ static void __gre_tunnel_init(struct net_device *dev) tunnel->parms.iph.protocol = IPPROTO_GRE;

tunnel->hlen = tunnel->tun_hlen + tunnel->encap_hlen; + dev->needed_headroom = tunnel->hlen + sizeof(tunnel->parms.iph);

dev->features |= GRE_FEATURES; dev->hw_features |= GRE_FEATURES; @@ -1046,10 +1049,14 @@ static int ipgre_tunnel_init(struct net_device *dev) return -EINVAL; dev->flags = IFF_BROADCAST; dev->header_ops = &ipgre_header_ops; + dev->hard_header_len = tunnel->hlen + sizeof(*iph); + dev->needed_headroom = 0; } #endif } else if (!tunnel->collect_md) { dev->header_ops = &ipgre_header_ops; + dev->hard_header_len = tunnel->hlen + sizeof(*iph); + dev->needed_headroom = 0; }

return ip_tunnel_init(dev);

From: Christoph Hellwig hch@lst.de

[ Upstream commit 428805c0c5e76ef643b1fbc893edfb636b3d8aef ]

get_gendisk grabs a reference on the disk and file operation, so this code will leak both of them while having absolutely no use for the gendisk itself.

This effectively reverts commit 2df83fa4bce421f ("PM / Hibernate: Use get_gendisk to verify partition if resume_file is integer format")

Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- kernel/power/hibernate.c | 11 ----------- 1 file changed, 11 deletions(-)

diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index 5cfa984e7c05..3d6cc120df0d 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -853,17 +853,6 @@ static int software_resume(void)

/* Check if the device is there */ swsusp_resume_device = name_to_dev_t(resume_file); - - /* - * name_to_dev_t is ineffective to verify parition if resume_file is in - * integer format. (e.g. major:minor) - */ - if (isdigit(resume_file[0]) && resume_wait) { - int partno; - while (!get_gendisk(swsusp_resume_device, &partno)) - msleep(10); - } - if (!swsusp_resume_device) { /* * Some device discovery might still be in progress; we need

From: Roman Bolshakov r.bolshakov@yadro.com

[ Upstream commit 7010645ba7256992818b518163f46bd4cdf8002a ]

trace-cmd report doesn't show events from target subsystem because scsi_command_size() leaks through event format string:

[target:target_sequencer_start] function scsi_command_size not defined [target:target_cmd_complete] function scsi_command_size not defined

Addition of scsi_command_size() to plugin_scsi.c in trace-cmd doesn't help because an expression is used inside TP_printk(). trace-cmd event parser doesn't understand minus sign inside [ ]:

Error: expected ']' but read '-'

Rather than duplicating kernel code in plugin_scsi.c, provide a dedicated field for CONTROL byte.

Link: https://lore.kernel.org/r/20200929125957.83069-1-r.bolshakov@yadro.com Reviewed-by: Mike Christie michael.christie@oracle.com Signed-off-by: Roman Bolshakov r.bolshakov@yadro.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- include/scsi/scsi_common.h | 7 +++++++ include/trace/events/target.h | 12 ++++++------ 2 files changed, 13 insertions(+), 6 deletions(-)

diff --git a/include/scsi/scsi_common.h b/include/scsi/scsi_common.h index 731ac09ed231..5b567b43e1b1 100644 --- a/include/scsi/scsi_common.h +++ b/include/scsi/scsi_common.h @@ -25,6 +25,13 @@ scsi_command_size(const unsigned char *cmnd) scsi_varlen_cdb_length(cmnd) : COMMAND_SIZE(cmnd[0]); }

+static inline unsigned char +scsi_command_control(const unsigned char *cmnd) +{ + return (cmnd[0] == VARIABLE_LENGTH_CMD) ? + cmnd[1] : cmnd[COMMAND_SIZE(cmnd[0]) - 1]; +} + /* Returns a human-readable name for the device */ extern const char *scsi_device_type(unsigned type);

diff --git a/include/trace/events/target.h b/include/trace/events/target.h index 914a872dd343..e87a3716b0ac 100644 --- a/include/trace/events/target.h +++ b/include/trace/events/target.h @@ -140,6 +140,7 @@ TRACE_EVENT(target_sequencer_start, __field( unsigned int, opcode ) __field( unsigned int, data_length ) __field( unsigned int, task_attribute ) + __field( unsigned char, control ) __array( unsigned char, cdb, TCM_MAX_COMMAND_SIZE ) __string( initiator, cmd->se_sess->se_node_acl->initiatorname ) ), @@ -149,6 +150,7 @@ TRACE_EVENT(target_sequencer_start, __entry->opcode = cmd->t_task_cdb[0]; __entry->data_length = cmd->data_length; __entry->task_attribute = cmd->sam_task_attr; + __entry->control = scsi_command_control(cmd->t_task_cdb); memcpy(__entry->cdb, cmd->t_task_cdb, TCM_MAX_COMMAND_SIZE); __assign_str(initiator, cmd->se_sess->se_node_acl->initiatorname); ), @@ -158,9 +160,7 @@ TRACE_EVENT(target_sequencer_start, show_opcode_name(__entry->opcode), __entry->data_length, __print_hex(__entry->cdb, 16), show_task_attribute_name(__entry->task_attribute), - scsi_command_size(__entry->cdb) <= 16 ? - __entry->cdb[scsi_command_size(__entry->cdb) - 1] : - __entry->cdb[1] + __entry->control ) );

@@ -175,6 +175,7 @@ TRACE_EVENT(target_cmd_complete, __field( unsigned int, opcode ) __field( unsigned int, data_length ) __field( unsigned int, task_attribute ) + __field( unsigned char, control ) __field( unsigned char, scsi_status ) __field( unsigned char, sense_length ) __array( unsigned char, cdb, TCM_MAX_COMMAND_SIZE ) @@ -187,6 +188,7 @@ TRACE_EVENT(target_cmd_complete, __entry->opcode = cmd->t_task_cdb[0]; __entry->data_length = cmd->data_length; __entry->task_attribute = cmd->sam_task_attr; + __entry->control = scsi_command_control(cmd->t_task_cdb); __entry->scsi_status = cmd->scsi_status; __entry->sense_length = cmd->scsi_status == SAM_STAT_CHECK_CONDITION ? min(18, ((u8 *) cmd->sense_buffer)[SPC_ADD_SENSE_LEN_OFFSET] + 8) : 0; @@ -203,9 +205,7 @@ TRACE_EVENT(target_cmd_complete, show_opcode_name(__entry->opcode), __entry->data_length, __print_hex(__entry->cdb, 16), show_task_attribute_name(__entry->task_attribute), - scsi_command_size(__entry->cdb) <= 16 ? - __entry->cdb[scsi_command_size(__entry->cdb) - 1] : - __entry->cdb[1] + __entry->control ) );

From: Sherry Sun sherry.sun@nxp.com

[ Upstream commit cc1a2679865a94b83804822996eed010a50a7c1d ]

Since struct _mic_vring_info and vring are allocated together and follow vring, if the vring_size() is not four bytes aligned, which will cause the start address of struct _mic_vring_info is not four byte aligned. For example, when vring entries is 128, the vring_size() will be 5126 bytes. The _mic_vring_info struct layout in ddr looks like: 0x90002400: 00000000 00390000 EE010000 0000C0FF Here 0x39 is the avail_idx member, and 0xC0FFEE01 is the magic member.

When EP use ioread32(magic) to reads the magic in RC's share memory, it will cause kernel panic on ARM64 platform due to the cross-byte io read. Here read magic in user space use le32toh(vr0->info->magic) will meet the same issue. So add round_up(x,4) for vring_size, then the struct _mic_vring_info will store in this way: 0x90002400: 00000000 00000000 00000039 C0FFEE01 Which will avoid kernel panic when read magic in struct _mic_vring_info.

Signed-off-by: Sherry Sun sherry.sun@nxp.com Signed-off-by: Joakim Zhang qiangqing.zhang@nxp.com Link: https://lore.kernel.org/r/20200929091106.24624-4-sherry.sun@nxp.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/misc/mic/vop/vop_main.c | 2 +- drivers/misc/mic/vop/vop_vringh.c | 4 ++-- samples/mic/mpssd/mpssd.c | 4 ++-- 3 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/misc/mic/vop/vop_main.c b/drivers/misc/mic/vop/vop_main.c index de7f035a176d..f4332a97c691 100644 --- a/drivers/misc/mic/vop/vop_main.c +++ b/drivers/misc/mic/vop/vop_main.c @@ -301,7 +301,7 @@ static struct virtqueue *vop_find_vq(struct virtio_device *dev, /* First assign the vring's allocated in host memory */ vqconfig = _vop_vq_config(vdev->desc) + index; memcpy_fromio(&config, vqconfig, sizeof(config)); - _vr_size = vring_size(le16_to_cpu(config.num), MIC_VIRTIO_RING_ALIGN); + _vr_size = round_up(vring_size(le16_to_cpu(config.num), MIC_VIRTIO_RING_ALIGN), 4); vr_size = PAGE_ALIGN(_vr_size + sizeof(struct _mic_vring_info)); va = vpdev->hw_ops->ioremap(vpdev, le64_to_cpu(config.address), vr_size); diff --git a/drivers/misc/mic/vop/vop_vringh.c b/drivers/misc/mic/vop/vop_vringh.c index 3cc68b028cfa..a252c2199b93 100644 --- a/drivers/misc/mic/vop/vop_vringh.c +++ b/drivers/misc/mic/vop/vop_vringh.c @@ -308,7 +308,7 @@ static int vop_virtio_add_device(struct vop_vdev *vdev,

num = le16_to_cpu(vqconfig[i].num); mutex_init(&vvr->vr_mutex); - vr_size = PAGE_ALIGN(vring_size(num, MIC_VIRTIO_RING_ALIGN) + + vr_size = PAGE_ALIGN(round_up(vring_size(num, MIC_VIRTIO_RING_ALIGN), 4) + sizeof(struct _mic_vring_info)); vr->va = (void *) __get_free_pages(GFP_KERNEL | __GFP_ZERO, @@ -320,7 +320,7 @@ static int vop_virtio_add_device(struct vop_vdev *vdev, goto err; } vr->len = vr_size; - vr->info = vr->va + vring_size(num, MIC_VIRTIO_RING_ALIGN); + vr->info = vr->va + round_up(vring_size(num, MIC_VIRTIO_RING_ALIGN), 4); vr->info->magic = cpu_to_le32(MIC_MAGIC + vdev->virtio_id + i); vr_addr = dma_map_single(&vpdev->dev, vr->va, vr_size, DMA_BIDIRECTIONAL); diff --git a/samples/mic/mpssd/mpssd.c b/samples/mic/mpssd/mpssd.c index f42ce551bb48..a50d27473e12 100644 --- a/samples/mic/mpssd/mpssd.c +++ b/samples/mic/mpssd/mpssd.c @@ -414,9 +414,9 @@ mic_virtio_copy(struct mic_info *mic, int fd,

static inline unsigned _vring_size(unsigned int num, unsigned long align) { - return ((sizeof(struct vring_desc) * num + sizeof(__u16) * (3 + num) + return _ALIGN_UP(((sizeof(struct vring_desc) * num + sizeof(__u16) * (3 + num) + align - 1) & ~(align - 1)) - + sizeof(__u16) * 3 + sizeof(struct vring_used_elem) * num; + + sizeof(__u16) * 3 + sizeof(struct vring_used_elem) * num, 4); }

/*

From: Jan Kara jack@suse.cz

[ Upstream commit 44ac6b829c4e173fdf6df18e6dd86aecf9a3dc99 ]

Although UDF standard allows it, we don't support sparing table larger than a single block. Check it during mount so that we don't try to access memory beyond end of buffer.

Reported-by: syzbot+9991561e714f597095da@syzkaller.appspotmail.com Signed-off-by: Jan Kara jack@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- fs/udf/super.c | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/fs/udf/super.c b/fs/udf/super.c index 1676a175cd7a..caeb01ca039b 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -1349,6 +1349,12 @@ static int udf_load_sparable_map(struct super_block *sb, (int)spm->numSparingTables); return -EIO; } + if (le32_to_cpu(spm->sizeSparingTable) > sb->s_blocksize) { + udf_err(sb, "error loading logical volume descriptor: " + "Too big sparing table size (%u)\n", + le32_to_cpu(spm->sizeSparingTable)); + return -EIO; + }

for (i = 0; i < spm->numSparingTables; i++) { loc = le32_to_cpu(spm->locSparingTable[i]);

From: Johan Hovold johan@kernel.org

[ Upstream commit 960c7339de27c6d6fec13b54880501c3576bb08d ]

Handle broken union functional descriptors where the master-interface doesn't exist or where its class is of neither Communication or Data type (as required by the specification) by falling back to "combined-interface" probing.

Note that this still allows for handling union descriptors with switched interfaces.

This specifically makes the Whistler radio scanners TRX series devices work with the driver without adding further quirks to the device-id table.

Reported-by: Daniel Caujolle-Bert f1rmb.daniel@gmail.com Tested-by: Daniel Caujolle-Bert f1rmb.daniel@gmail.com Acked-by: Oliver Neukum oneukum@suse.com Signed-off-by: Johan Hovold johan@kernel.org Link: https://lore.kernel.org/r/20200921135951.24045-3-johan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/class/cdc-acm.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 41453bf6fc0b..ba3df4af74f1 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1275,9 +1275,21 @@ static int acm_probe(struct usb_interface *intf, } } } else { + int class = -1; + data_intf_num = union_header->bSlaveInterface0; control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0); data_interface = usb_ifnum_to_if(usb_dev, data_intf_num); + + if (control_interface) + class = control_interface->cur_altsetting->desc.bInterfaceClass; + + if (class != USB_CLASS_COMM && class != USB_CLASS_CDC_DATA) { + dev_dbg(&intf->dev, "Broken union descriptor, assuming single interface\n"); + combined_interfaces = 1; + control_interface = data_interface = intf; + goto look_for_collapsed_interface; + } }

if (!control_interface || !data_interface) {

From: Joakim Zhang qiangqing.zhang@nxp.com

[ Upstream commit 9ad02c7f4f279504bdd38ab706fdc97d5f2b2a9c ]

This patch implements error handling and propagates the error value of flexcan_chip_stop(). This function will be called from flexcan_suspend() in an upcoming patch in some SoCs which support LPSR mode.

Add a new function flexcan_chip_stop_disable_on_error() that tries to disable the chip even in case of errors.

Signed-off-by: Joakim Zhang qiangqing.zhang@nxp.com [mkl: introduce flexcan_chip_stop_disable_on_error() and use it in flexcan_close()] Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Link: https://lore.kernel.org/r/20200922144429.2613631-11-mkl@pengutronix.de Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/can/flexcan.c | 34 ++++++++++++++++++++++++++++------ 1 file changed, 28 insertions(+), 6 deletions(-)

diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index bfe13c6627be..0be8db6ab319 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -1091,18 +1091,23 @@ static int flexcan_chip_start(struct net_device *dev) return err; }

-/* flexcan_chip_stop +/* __flexcan_chip_stop * - * this functions is entered with clocks enabled + * this function is entered with clocks enabled */ -static void flexcan_chip_stop(struct net_device *dev) +static int __flexcan_chip_stop(struct net_device *dev, bool disable_on_error) { struct flexcan_priv *priv = netdev_priv(dev); struct flexcan_regs __iomem *regs = priv->regs; + int err;

/* freeze + disable module */ - flexcan_chip_freeze(priv); - flexcan_chip_disable(priv); + err = flexcan_chip_freeze(priv); + if (err && !disable_on_error) + return err; + err = flexcan_chip_disable(priv); + if (err && !disable_on_error) + goto out_chip_unfreeze;

/* Disable all interrupts */ priv->write(0, &regs->imask2); @@ -1112,6 +1117,23 @@ static void flexcan_chip_stop(struct net_device *dev)

flexcan_transceiver_disable(priv); priv->can.state = CAN_STATE_STOPPED; + + return 0; + + out_chip_unfreeze: + flexcan_chip_unfreeze(priv); + + return err; +} + +static inline int flexcan_chip_stop_disable_on_error(struct net_device *dev) +{ + return __flexcan_chip_stop(dev, true); +} + +static inline int flexcan_chip_stop(struct net_device *dev) +{ + return __flexcan_chip_stop(dev, false); }

static int flexcan_open(struct net_device *dev) @@ -1165,7 +1187,7 @@ static int flexcan_close(struct net_device *dev)

netif_stop_queue(dev); can_rx_offload_disable(&priv->offload); - flexcan_chip_stop(dev); + flexcan_chip_stop_disable_on_error(dev);

free_irq(dev->irq, dev); clk_disable_unprepare(priv->clk_per);

From: Keita Suzuki keitasuzuki.park@sslab.ics.keio.ac.jp

[ Upstream commit bc28369c6189009b66d9619dd9f09bd8c684bb98 ]

When mfd_add_devices() fail, pcr->slots should also be freed. However, the current implementation does not free the member, leading to a memory leak.

Fix this by adding a new goto label that frees pcr->slots.

Signed-off-by: Keita Suzuki keitasuzuki.park@sslab.ics.keio.ac.jp Link: https://lore.kernel.org/r/20200909071853.4053-1-keitasuzuki.park@sslab.ics.k... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/misc/cardreader/rtsx_pcr.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/cardreader/rtsx_pcr.c b/drivers/misc/cardreader/rtsx_pcr.c index 5c5d0241603a..3eb3c237f339 100644 --- a/drivers/misc/cardreader/rtsx_pcr.c +++ b/drivers/misc/cardreader/rtsx_pcr.c @@ -1524,12 +1524,14 @@ static int rtsx_pci_probe(struct pci_dev *pcidev, ret = mfd_add_devices(&pcidev->dev, pcr->id, rtsx_pcr_cells, ARRAY_SIZE(rtsx_pcr_cells), NULL, 0, NULL); if (ret < 0) - goto disable_irq; + goto free_slots;

schedule_delayed_work(&pcr->idle_work, msecs_to_jiffies(200));

return 0;

+free_slots: + kfree(pcr->slots); disable_irq: free_irq(pcr->irq, (void *)pcr); disable_msi:

From: "Darrick J. Wong" darrick.wong@oracle.com

[ Upstream commit 2a6ca4baed620303d414934aa1b7b0a8e7bab05f ]

There's an overflow bug in the realtime allocator. If the rt volume is large enough to handle a single allocation request that is larger than the maximum bmap extent length and the rt bitmap ends exactly on a bitmap block boundary, it's possible that the near allocator will try to check the freeness of a range that extends past the end of the bitmap. This fails with a corruption error and shuts down the fs.

Therefore, constrain maxlen so that the range scan cannot run off the end of the rt bitmap.

Signed-off-by: Darrick J. Wong darrick.wong@oracle.com Reviewed-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- fs/xfs/xfs_rtalloc.c | 11 +++++++++++ 1 file changed, 11 insertions(+)

diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c index 484eb0adcefb..08da48b66235 100644 --- a/fs/xfs/xfs_rtalloc.c +++ b/fs/xfs/xfs_rtalloc.c @@ -245,6 +245,9 @@ xfs_rtallocate_extent_block( end = XFS_BLOCKTOBIT(mp, bbno + 1) - 1; i <= end; i++) { + /* Make sure we don't scan off the end of the rt volume. */ + maxlen = min(mp->m_sb.sb_rextents, i + maxlen) - i; + /* * See if there's a free extent of maxlen starting at i. * If it's not so then next will contain the first non-free. @@ -440,6 +443,14 @@ xfs_rtallocate_extent_near( */ if (bno >= mp->m_sb.sb_rextents) bno = mp->m_sb.sb_rextents - 1; + + /* Make sure we don't run off the end of the rt volume. */ + maxlen = min(mp->m_sb.sb_rextents, bno + maxlen) - bno; + if (maxlen < minlen) { + *rtblock = NULLRTBLOCK; + return 0; + } + /* * Try the exact allocation first. */

From: Abhishek Pandit-Subedi abhishekpandit@chromium.org

[ Upstream commit 20ae4089d0afeb24e9ceb026b996bfa55c983cc2 ]

Since l2cap_sock_teardown_cb doesn't acquire the channel lock before setting the socket as zapped, it could potentially race with l2cap_sock_release which frees the socket. Thus, wait until the cleanup is complete before marking the socket as zapped.

This race was reproduced on a JBL GO speaker after the remote device rejected L2CAP connection due to resource unavailability.

Here is a dmesg log with debug logs from a repro of this bug: [ 3465.424086] Bluetooth: hci_core.c:hci_acldata_packet() hci0 len 16 handle 0x0003 flags 0x0002 [ 3465.424090] Bluetooth: hci_conn.c:hci_conn_enter_active_mode() hcon 00000000cfedd07d mode 0 [ 3465.424094] Bluetooth: l2cap_core.c:l2cap_recv_acldata() conn 000000007eae8952 len 16 flags 0x2 [ 3465.424098] Bluetooth: l2cap_core.c:l2cap_recv_frame() len 12, cid 0x0001 [ 3465.424102] Bluetooth: l2cap_core.c:l2cap_raw_recv() conn 000000007eae8952 [ 3465.424175] Bluetooth: l2cap_core.c:l2cap_sig_channel() code 0x03 len 8 id 0x0c [ 3465.424180] Bluetooth: l2cap_core.c:l2cap_connect_create_rsp() dcid 0x0045 scid 0x0000 result 0x02 status 0x00 [ 3465.424189] Bluetooth: l2cap_core.c:l2cap_chan_put() chan 000000006acf9bff orig refcnt 4 [ 3465.424196] Bluetooth: l2cap_core.c:l2cap_chan_del() chan 000000006acf9bff, conn 000000007eae8952, err 111, state BT_CONNECT [ 3465.424203] Bluetooth: l2cap_sock.c:l2cap_sock_teardown_cb() chan 000000006acf9bff state BT_CONNECT [ 3465.424221] Bluetooth: l2cap_core.c:l2cap_chan_put() chan 000000006acf9bff orig refcnt 3 [ 3465.424226] Bluetooth: hci_core.h:hci_conn_drop() hcon 00000000cfedd07d orig refcnt 6 [ 3465.424234] BUG: spinlock bad magic on CPU#2, kworker/u17:0/159 [ 3465.425626] Bluetooth: hci_sock.c:hci_sock_sendmsg() sock 000000002bb0cb64 sk 00000000a7964053 [ 3465.430330] lock: 0xffffff804410aac0, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 [ 3465.430332] Causing a watchdog bite!

Signed-off-by: Abhishek Pandit-Subedi abhishekpandit@chromium.org Reported-by: Balakrishna Godavarthi bgodavar@codeaurora.org Reviewed-by: Manish Mandlik mmandlik@chromium.org Signed-off-by: Marcel Holtmann marcel@holtmann.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/bluetooth/l2cap_sock.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c index 2a85dc3be8bf..198a1fdd6709 100644 --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -1341,8 +1341,6 @@ static void l2cap_sock_teardown_cb(struct l2cap_chan *chan, int err)

parent = bt_sk(sk)->parent;

- sock_set_flag(sk, SOCK_ZAPPED); - switch (chan->state) { case BT_OPEN: case BT_BOUND: @@ -1369,8 +1367,11 @@ static void l2cap_sock_teardown_cb(struct l2cap_chan *chan, int err)

break; } - release_sock(sk); + + /* Only zap after cleanup to avoid use after free race */ + sock_set_flag(sk, SOCK_ZAPPED); + }

static void l2cap_sock_state_change_cb(struct l2cap_chan *chan, int state,

From: Keita Suzuki keitasuzuki.park@sslab.ics.keio.ac.jp

[ Upstream commit f4443293d741d1776b86ed1dd8c4e4285d0775fc ]

When wlc_phy_txpwr_srom_read_lcnphy fails in wlc_phy_attach_lcnphy, the allocated pi->u.pi_lcnphy is leaked, since struct brcms_phy will be freed in the caller function.

Fix this by calling wlc_phy_detach_lcnphy in the error handler of wlc_phy_txpwr_srom_read_lcnphy before returning.

Signed-off-by: Keita Suzuki keitasuzuki.park@sslab.ics.keio.ac.jp Signed-off-by: Kalle Valo kvalo@codeaurora.org Link: https://lore.kernel.org/r/20200908121743.23108-1-keitasuzuki.park@sslab.ics.... Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c index 9fb0d9fbd939..d532decc1538 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmsmac/phy/phy_lcn.c @@ -5085,8 +5085,10 @@ bool wlc_phy_attach_lcnphy(struct brcms_phy *pi) pi->pi_fptr.radioloftget = wlc_lcnphy_get_radio_loft; pi->pi_fptr.detach = wlc_phy_detach_lcnphy;

- if (!wlc_phy_txpwr_srom_read_lcnphy(pi)) + if (!wlc_phy_txpwr_srom_read_lcnphy(pi)) { + kfree(pi->u.pi_lcnphy); return false; + }

if (LCNREV_IS(pi->pubpi.phy_rev, 1)) { if (pi_lcn->lcnphy_tempsense_option == 3) {

From: Doug Horn doughorn@google.com

[ Upstream commit e219688fc5c3d0d9136f8d29d7e0498388f01440 ]

If a response to virtio_gpu_cmd_get_capset_info takes longer than five seconds to return, the callback will access freed kernel memory in vg->capsets.

Signed-off-by: Doug Horn doughorn@google.com Link: http://patchwork.freedesktop.org/patch/msgid/20200902210847.2689-2-gurchetan... Signed-off-by: Gerd Hoffmann kraxel@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/virtio/virtgpu_kms.c | 2 ++ drivers/gpu/drm/virtio/virtgpu_vq.c | 10 +++++++--- 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c index 65060c08522d..22397a23780c 100644 --- a/drivers/gpu/drm/virtio/virtgpu_kms.c +++ b/drivers/gpu/drm/virtio/virtgpu_kms.c @@ -113,8 +113,10 @@ static void virtio_gpu_get_capsets(struct virtio_gpu_device *vgdev, vgdev->capsets[i].id > 0, 5 * HZ); if (ret == 0) { DRM_ERROR("timed out waiting for cap set %d\n", i); + spin_lock(&vgdev->display_info_lock); kfree(vgdev->capsets); vgdev->capsets = NULL; + spin_unlock(&vgdev->display_info_lock); return; } DRM_INFO("cap set %d: id %d, max-version %d, max-size %d\n", diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c index 608906f06ced..3e72c6dac0ff 100644 --- a/drivers/gpu/drm/virtio/virtgpu_vq.c +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c @@ -566,9 +566,13 @@ static void virtio_gpu_cmd_get_capset_info_cb(struct virtio_gpu_device *vgdev, int i = le32_to_cpu(cmd->capset_index);

spin_lock(&vgdev->display_info_lock); - vgdev->capsets[i].id = le32_to_cpu(resp->capset_id); - vgdev->capsets[i].max_version = le32_to_cpu(resp->capset_max_version); - vgdev->capsets[i].max_size = le32_to_cpu(resp->capset_max_size); + if (vgdev->capsets) { + vgdev->capsets[i].id = le32_to_cpu(resp->capset_id); + vgdev->capsets[i].max_version = le32_to_cpu(resp->capset_max_version); + vgdev->capsets[i].max_size = le32_to_cpu(resp->capset_max_size); + } else { + DRM_ERROR("invalid capset memory."); + } spin_unlock(&vgdev->display_info_lock); wake_up(&vgdev->resp_wq); }

From: Nilesh Javali njavali@marvell.com

[ Upstream commit 28b35d17f9f8573d4646dd8df08917a4076a6b63 ]

While aborting the I/O, the firmware cleanup task timed out and driver deleted the I/O from active command list. Some time later the firmware sent the cleanup task response and driver again deleted the I/O from active command list causing firmware to send completion for non-existent I/O and list_del corruption of active command list.

Add fix to check if I/O is present before deleting it from the active command list to ensure firmware sends valid I/O completion and protect against list_del corruption.

Link: https://lore.kernel.org/r/20200908095657.26821-4-mrangankar@marvell.com Signed-off-by: Nilesh Javali njavali@marvell.com Signed-off-by: Manish Rangankar mrangankar@marvell.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/qedi/qedi_fw.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/qedi/qedi_fw.c b/drivers/scsi/qedi/qedi_fw.c index 0d00970b7e25..357a0acc5ed2 100644 --- a/drivers/scsi/qedi/qedi_fw.c +++ b/drivers/scsi/qedi/qedi_fw.c @@ -837,8 +837,11 @@ static void qedi_process_cmd_cleanup_resp(struct qedi_ctx *qedi, qedi_clear_task_idx(qedi_conn->qedi, rtid);

spin_lock(&qedi_conn->list_lock); - list_del_init(&dbg_cmd->io_cmd); - qedi_conn->active_cmd_count--; + if (likely(dbg_cmd->io_cmd_in_list)) { + dbg_cmd->io_cmd_in_list = false; + list_del_init(&dbg_cmd->io_cmd); + qedi_conn->active_cmd_count--; + } spin_unlock(&qedi_conn->list_lock); qedi_cmd->state = CLEANUP_RECV; wake_up_interruptible(&qedi_conn->wait_queue); @@ -1257,6 +1260,7 @@ int qedi_cleanup_all_io(struct qedi_ctx *qedi, struct qedi_conn *qedi_conn, qedi_conn->cmd_cleanup_req++; qedi_iscsi_cleanup_task(ctask, true);

+ cmd->io_cmd_in_list = false; list_del_init(&cmd->io_cmd); qedi_conn->active_cmd_count--; QEDI_WARN(&qedi->dbg_ctx, @@ -1470,8 +1474,11 @@ static void qedi_tmf_work(struct work_struct *work) spin_unlock_bh(&qedi_conn->tmf_work_lock);

spin_lock(&qedi_conn->list_lock); - list_del_init(&cmd->io_cmd); - qedi_conn->active_cmd_count--; + if (likely(cmd->io_cmd_in_list)) { + cmd->io_cmd_in_list = false; + list_del_init(&cmd->io_cmd); + qedi_conn->active_cmd_count--; + } spin_unlock(&qedi_conn->list_lock);

clear_bit(QEDI_CONN_FW_CLEANUP, &qedi_conn->flags);

From: Peilin Ye yepeilin.cs@gmail.com

[ Upstream commit c5a8a8498eed1c164afc94f50a939c1a10abf8ad ]

do_ip_vs_set_ctl() is referencing uninitialized stack value when `len` is zero. Fix it.

Reported-by: syzbot+23b5f9e7caf61d9a3898@syzkaller.appspotmail.com Link: https://syzkaller.appspot.com/bug?id=46ebfb92a8a812621a001ef04d90dfa459520fe... Suggested-by: Julian Anastasov ja@ssi.bg Signed-off-by: Peilin Ye yepeilin.cs@gmail.com Acked-by: Julian Anastasov ja@ssi.bg Reviewed-by: Simon Horman horms@verge.net.au Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/netfilter/ipvs/ip_vs_ctl.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index c339b5e386b7..3ad1de081e3c 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -2393,6 +2393,10 @@ do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len) /* Set timeout values for (tcp tcpfin udp) */ ret = ip_vs_set_timeout(ipvs, (struct ip_vs_timeout_user *)arg); goto out_unlock; + } else if (!len) { + /* No more commands with len == 0 below */ + ret = -EINVAL; + goto out_unlock; }

usvc_compat = (struct ip_vs_service_user *)arg; @@ -2469,9 +2473,6 @@ do_ip_vs_set_ctl(struct sock *sk, int cmd, void __user *user, unsigned int len) break; case IP_VS_SO_SET_DELDEST: ret = ip_vs_del_dest(svc, &udest); - break; - default: - ret = -EINVAL; }

out_unlock:

From: Tetsuo Handa penguin-kernel@I-love.SAKURA.ne.jp

[ Upstream commit 621a3a8b1c0ecf16e1e5667ea5756a76a082b738 ]

syzbot is reporting that del_timer_sync() is called from mwifiex_usb_cleanup_tx_aggr() from mwifiex_unregister_dev() without checking timer_setup() from mwifiex_usb_tx_init() was called [1].

Ganapathi Bhat proposed a possibly cleaner fix, but it seems that that fix was forgotten [2].

"grep -FrB1 'del_timer' drivers/ | grep -FA1 '.function)'" says that currently there are 28 locations which call del_timer[_sync]() only if that timer's function field was initialized (because timer_setup() sets that timer's function field). Therefore, let's use same approach here.

[1] https://syzkaller.appspot.com/bug?id=26525f643f454dd7be0078423e3cdb0d5774495... [2] https://lkml.kernel.org/r/CA+ASDXMHt2gq9Hy+iP_BYkWXsSreWdp3_bAfMkNcuqJ3K+-jb...

Reported-by: syzbot syzbot+dc4127f950da51639216@syzkaller.appspotmail.com Cc: Ganapathi Bhat ganapathi.bhat@nxp.com Cc: Brian Norris briannorris@chromium.org Signed-off-by: Tetsuo Handa penguin-kernel@I-love.SAKURA.ne.jp Reviewed-by: Brian Norris briannorris@chromium.org Acked-by: Ganapathi Bhat ganapathi.bhat@nxp.com Signed-off-by: Kalle Valo kvalo@codeaurora.org Link: https://lore.kernel.org/r/20200821082720.7716-1-penguin-kernel@I-love.SAKURA... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/marvell/mwifiex/usb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/usb.c b/drivers/net/wireless/marvell/mwifiex/usb.c index d445acc4786b..2a8d40ce463d 100644 --- a/drivers/net/wireless/marvell/mwifiex/usb.c +++ b/drivers/net/wireless/marvell/mwifiex/usb.c @@ -1355,7 +1355,8 @@ static void mwifiex_usb_cleanup_tx_aggr(struct mwifiex_adapter *adapter) skb_dequeue(&port->tx_aggr.aggr_list))) mwifiex_write_data_complete(adapter, skb_tmp, 0, -1); - del_timer_sync(&port->tx_aggr.timer_cnxt.hold_timer); + if (port->tx_aggr.timer_cnxt.hold_timer.function) + del_timer_sync(&port->tx_aggr.timer_cnxt.hold_timer); port->tx_aggr.timer_cnxt.is_hold_timer_set = false; port->tx_aggr.timer_cnxt.hold_tmo_msecs = 0; }

From: Eli Billauer eli.billauer@gmail.com

[ Upstream commit fbc299437c06648afcc7891e6e2e6638dd48d4df ]

usb_kill_anchored_urbs() is commonly used to cancel all URBs on an anchor just before releasing resources which the URBs rely on. By doing so, users of this function rely on that no completer callbacks will take place from any URB on the anchor after it returns.

However if this function is called in parallel with __usb_hcd_giveback_urb processing a URB on the anchor, the latter may call the completer callback after usb_kill_anchored_urbs() returns. This can lead to a kernel panic due to use after release of memory in interrupt context.

The race condition is that __usb_hcd_giveback_urb() first unanchors the URB and then makes the completer callback. Such URB is hence invisible to usb_kill_anchored_urbs(), allowing it to return before the completer has been called, since the anchor's urb_list is empty.

Even worse, if the racing completer callback resubmits the URB, it may remain in the system long after usb_kill_anchored_urbs() returns.

Hence list_empty(&anchor->urb_list), which is used in the existing while-loop, doesn't reliably ensure that all URBs of the anchor are gone.

A similar problem exists with usb_poison_anchored_urbs() and usb_scuttle_anchored_urbs().

This patch adds an external do-while loop, which ensures that all URBs are indeed handled before these three functions return. This change has no effect at all unless the race condition occurs, in which case the loop will busy-wait until the racing completer callback has finished. This is a rare condition, so the CPU waste of this spinning is negligible.

The additional do-while loop relies on usb_anchor_check_wakeup(), which returns true iff the anchor list is empty, and there is no __usb_hcd_giveback_urb() in the system that is in the middle of the unanchor-before-complete phase. The @suspend_wakeups member of struct usb_anchor is used for this purpose, which was introduced to solve another problem which the same race condition causes, in commit 6ec4147e7bdb ("usb-anchor: Delay usb_wait_anchor_empty_timeout wake up till completion is done").

The surely_empty variable is necessary, because usb_anchor_check_wakeup() must be called with the lock held to prevent races. However the spinlock must be released and reacquired if the outer loop spins with an empty URB list while waiting for the unanchor-before-complete passage to finish: The completer callback may very well attempt to take the very same lock.

To summarize, using usb_anchor_check_wakeup() means that the patched functions can return only when the anchor's list is empty, and there is no invisible URB being processed. Since the inner while loop finishes on the empty list condition, the new do-while loop will terminate as well, except for when the said race condition occurs.

Signed-off-by: Eli Billauer eli.billauer@gmail.com Acked-by: Oliver Neukum oneukum@suse.com Acked-by: Alan Stern stern@rowland.harvard.edu Link: https://lore.kernel.org/r/20200731054650.30644-1-eli.billauer@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/core/urb.c | 89 +++++++++++++++++++++++++----------------- 1 file changed, 54 insertions(+), 35 deletions(-)

diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 5e844097a9e3..3cd7732c086e 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -773,11 +773,12 @@ void usb_block_urb(struct urb *urb) EXPORT_SYMBOL_GPL(usb_block_urb);

/** - * usb_kill_anchored_urbs - cancel transfer requests en masse + * usb_kill_anchored_urbs - kill all URBs associated with an anchor * @anchor: anchor the requests are bound to * - * this allows all outstanding URBs to be killed starting - * from the back of the queue + * This kills all outstanding URBs starting from the back of the queue, + * with guarantee that no completer callbacks will take place from the + * anchor after this function returns. * * This routine should not be called by a driver after its disconnect * method has returned. @@ -785,20 +786,26 @@ EXPORT_SYMBOL_GPL(usb_block_urb); void usb_kill_anchored_urbs(struct usb_anchor *anchor) { struct urb *victim; + int surely_empty;

- spin_lock_irq(&anchor->lock); - while (!list_empty(&anchor->urb_list)) { - victim = list_entry(anchor->urb_list.prev, struct urb, - anchor_list); - /* we must make sure the URB isn't freed before we kill it*/ - usb_get_urb(victim); - spin_unlock_irq(&anchor->lock); - /* this will unanchor the URB */ - usb_kill_urb(victim); - usb_put_urb(victim); + do { spin_lock_irq(&anchor->lock); - } - spin_unlock_irq(&anchor->lock); + while (!list_empty(&anchor->urb_list)) { + victim = list_entry(anchor->urb_list.prev, + struct urb, anchor_list); + /* make sure the URB isn't freed before we kill it */ + usb_get_urb(victim); + spin_unlock_irq(&anchor->lock); + /* this will unanchor the URB */ + usb_kill_urb(victim); + usb_put_urb(victim); + spin_lock_irq(&anchor->lock); + } + surely_empty = usb_anchor_check_wakeup(anchor); + + spin_unlock_irq(&anchor->lock); + cpu_relax(); + } while (!surely_empty); } EXPORT_SYMBOL_GPL(usb_kill_anchored_urbs);

@@ -817,21 +824,27 @@ EXPORT_SYMBOL_GPL(usb_kill_anchored_urbs); void usb_poison_anchored_urbs(struct usb_anchor *anchor) { struct urb *victim; + int surely_empty;

- spin_lock_irq(&anchor->lock); - anchor->poisoned = 1; - while (!list_empty(&anchor->urb_list)) { - victim = list_entry(anchor->urb_list.prev, struct urb, - anchor_list); - /* we must make sure the URB isn't freed before we kill it*/ - usb_get_urb(victim); - spin_unlock_irq(&anchor->lock); - /* this will unanchor the URB */ - usb_poison_urb(victim); - usb_put_urb(victim); + do { spin_lock_irq(&anchor->lock); - } - spin_unlock_irq(&anchor->lock); + anchor->poisoned = 1; + while (!list_empty(&anchor->urb_list)) { + victim = list_entry(anchor->urb_list.prev, + struct urb, anchor_list); + /* make sure the URB isn't freed before we kill it */ + usb_get_urb(victim); + spin_unlock_irq(&anchor->lock); + /* this will unanchor the URB */ + usb_poison_urb(victim); + usb_put_urb(victim); + spin_lock_irq(&anchor->lock); + } + surely_empty = usb_anchor_check_wakeup(anchor); + + spin_unlock_irq(&anchor->lock); + cpu_relax(); + } while (!surely_empty); } EXPORT_SYMBOL_GPL(usb_poison_anchored_urbs);

@@ -971,14 +984,20 @@ void usb_scuttle_anchored_urbs(struct usb_anchor *anchor) { struct urb *victim; unsigned long flags; + int surely_empty; + + do { + spin_lock_irqsave(&anchor->lock, flags); + while (!list_empty(&anchor->urb_list)) { + victim = list_entry(anchor->urb_list.prev, + struct urb, anchor_list); + __usb_unanchor_urb(victim, anchor); + } + surely_empty = usb_anchor_check_wakeup(anchor);

- spin_lock_irqsave(&anchor->lock, flags); - while (!list_empty(&anchor->urb_list)) { - victim = list_entry(anchor->urb_list.prev, struct urb, - anchor_list); - __usb_unanchor_urb(victim, anchor); - } - spin_unlock_irqrestore(&anchor->lock, flags); + spin_unlock_irqrestore(&anchor->lock, flags); + cpu_relax(); + } while (!surely_empty); }

EXPORT_SYMBOL_GPL(usb_scuttle_anchored_urbs);

From: Zekun Shen bruceshenzk@gmail.com

[ Upstream commit bad60b8d1a7194df38fd7fe4b22f3f4dcf775099 ]

The idx in __ath10k_htt_rx_ring_fill_n function lives in consistent dma region writable by the device. Malfunctional or malicious device could manipulate such idx to have a OOB write. Either by htt->rx_ring.netbufs_ring[idx] = skb; or by ath10k_htt_set_paddrs_ring(htt, paddr, idx);

The idx can also be negative as it's signed, giving a large memory space to write to.

It's possibly exploitable by corruptting a legit pointer with a skb pointer. And then fill skb with payload as rougue object.

Part of the log here. Sometimes it appears as UAF when writing to a freed memory by chance.

[ 15.594376] BUG: unable to handle page fault for address: ffff887f5c1804f0 [ 15.595483] #PF: supervisor write access in kernel mode [ 15.596250] #PF: error_code(0x0002) - not-present page [ 15.597013] PGD 0 P4D 0 [ 15.597395] Oops: 0002 [#1] SMP KASAN PTI [ 15.597967] CPU: 0 PID: 82 Comm: kworker/u2:2 Not tainted 5.6.0 #69 [ 15.598843] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.1-0-ga5cab58e9a3f-prebuilt.qemu.org 04/01/2014 [ 15.600438] Workqueue: ath10k_wq ath10k_core_register_work [ath10k_core] [ 15.601389] RIP: 0010:__ath10k_htt_rx_ring_fill_n (linux/drivers/net/wireless/ath/ath10k/htt_rx.c:173) ath10k_core

Signed-off-by: Zekun Shen bruceshenzk@gmail.com Signed-off-by: Kalle Valo kvalo@codeaurora.org Link: https://lore.kernel.org/r/20200623221105.3486-1-bruceshenzk@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/wireless/ath/ath10k/htt_rx.c | 8 ++++++++ 1 file changed, 8 insertions(+)

diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 03d4cc6f35bc..7d15f6208b46 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -153,6 +153,14 @@ static int __ath10k_htt_rx_ring_fill_n(struct ath10k_htt *htt, int num) BUILD_BUG_ON(HTT_RX_RING_FILL_LEVEL >= HTT_RX_RING_SIZE / 2);

idx = __le32_to_cpu(*htt->rx_ring.alloc_idx.vaddr); + + if (idx < 0 || idx >= htt->rx_ring.size) { + ath10k_err(htt->ar, "rx ring index is not valid, firmware malfunctioning?\n"); + idx &= htt->rx_ring.size_mask; + ret = -ENOMEM; + goto fail; + } + while (num > 0) { skb = dev_alloc_skb(HTT_RX_BUF_SIZE + HTT_RX_DESC_ALIGN); if (!skb) {

From: Peng Fan peng.fan@nxp.com

commit 29788ab1d2bf26c130de8f44f9553ee78a27e8d5 upstream.

The watermark is set to 1, so we need to input two chars to trigger RDRF using the original logic. With the new logic, we could always get the char when there is data in FIFO.

Suggested-by: Fugang Duan fugang.duan@nxp.com Signed-off-by: Peng Fan peng.fan@nxp.com Link: https://lore.kernel.org/r/20200929095509.21680-1-peng.fan@nxp.com Cc: stable stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/tty/serial/fsl_lpuart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 2daccb10ae2f..4b9f42269477 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -563,7 +563,7 @@ static void lpuart32_poll_put_char(struct uart_port *port, unsigned char c)

static int lpuart32_poll_get_char(struct uart_port *port) { - if (!(lpuart32_read(port, UARTSTAT) & UARTSTAT_RDRF)) + if (!(lpuart32_read(port, UARTWATER) >> UARTWATER_RXCNT_OFF)) return NO_POLL_CHAR;

return lpuart32_read(port, UARTDATA);

From: Oliver Neukum oneukum@suse.com

commit 37d2a36394d954413a495da61da1b2a51ecd28ab upstream.

syzbot is reporting hung task at wdm_flush() [1], for there is a circular dependency that wdm_flush() from flip_close() for /dev/cdc-wdm0 forever waits for /dev/raw-gadget to be closed while close() for /dev/raw-gadget cannot be called unless close() for /dev/cdc-wdm0 completes.

Tetsuo Handa considered that such circular dependency is an usage error [2] which corresponds to an unresponding broken hardware [3]. But Alan Stern responded that we should be prepared for such hardware [4]. Therefore, this patch changes wdm_flush() to use wait_event_interruptible_timeout() which gives up after 30 seconds, for hardware that remains silent must be ignored. The 30 seconds are coming out of thin air.

Changing wait_event() to wait_event_interruptible_timeout() makes error reporting from close() syscall less reliable. To compensate it, this patch also implements wdm_fsync() which does not use timeout. Those who want to be very sure that data has gone out to the device are now advised to call fsync(), with a caveat that fsync() can return -EINVAL when running on older kernels which do not implement wdm_fsync().

This patch also fixes three more problems (listed below) found during exhaustive discussion and testing.

Since multiple threads can concurrently call wdm_write()/wdm_flush(), we need to use wake_up_all() whenever clearing WDM_IN_USE in order to make sure that all waiters are woken up. Also, error reporting needs to use fetch-and-clear approach in order not to report same error for multiple times.

Since wdm_flush() checks WDM_DISCONNECTING, wdm_write() should as well check WDM_DISCONNECTING.

In wdm_flush(), since locks are not held, it is not safe to dereference desc->intf after checking that WDM_DISCONNECTING is not set [5]. Thus, remove dev_err() from wdm_flush().

[1] https://syzkaller.appspot.com/bug?id=e7b761593b23eb50855b9ea31e3be5472b71118... [2] https://lkml.kernel.org/r/27b7545e-8f41-10b8-7c02-e35a08eb1611@i-love.sakura... [3] https://lkml.kernel.org/r/79ba410f-e0ef-2465-b94f-6b9a4a82adf5@i-love.sakura... [4] https://lkml.kernel.org/r/20200530011040.GB12419@rowland.harvard.edu [5] https://lkml.kernel.org/r/c85331fc-874c-6e46-a77f-0ef1dc075308@i-love.sakura...

Reported-by: syzbot syzbot+854768b99f19e89d7f81@syzkaller.appspotmail.com Cc: stable stable@vger.kernel.org Co-developed-by: Tetsuo Handa penguin-kernel@I-love.SAKURA.ne.jp Signed-off-by: Tetsuo Handa penguin-kernel@I-love.SAKURA.ne.jp Signed-off-by: Oliver Neukum oneukum@suse.com Cc: Alan Stern stern@rowland.harvard.edu Link: https://lore.kernel.org/r/20200928141755.3476-1-penguin-kernel@I-love.SAKURA... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/class/cdc-wdm.c | 72 ++++++++++++++++++++++++++++--------- 1 file changed, 55 insertions(+), 17 deletions(-)

diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 4929c5883068..55ad4c43b380 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -58,6 +58,9 @@ MODULE_DEVICE_TABLE (usb, wdm_ids);

#define WDM_MAX 16

+/* we cannot wait forever at flush() */ +#define WDM_FLUSH_TIMEOUT (30 * HZ) + /* CDC-WMC r1.1 requires wMaxCommand to be "at least 256 decimal (0x100)" */ #define WDM_DEFAULT_BUFSIZE 256

@@ -151,7 +154,7 @@ static void wdm_out_callback(struct urb *urb) kfree(desc->outbuf); desc->outbuf = NULL; clear_bit(WDM_IN_USE, &desc->flags); - wake_up(&desc->wait); + wake_up_all(&desc->wait); }

static void wdm_in_callback(struct urb *urb) @@ -393,6 +396,9 @@ static ssize_t wdm_write if (test_bit(WDM_RESETTING, &desc->flags)) r = -EIO;

+ if (test_bit(WDM_DISCONNECTING, &desc->flags)) + r = -ENODEV; + if (r < 0) { rv = r; goto out_free_mem_pm; @@ -424,6 +430,7 @@ static ssize_t wdm_write if (rv < 0) { desc->outbuf = NULL; clear_bit(WDM_IN_USE, &desc->flags); + wake_up_all(&desc->wait); /* for wdm_wait_for_response() */ dev_err(&desc->intf->dev, "Tx URB error: %d\n", rv); rv = usb_translate_errors(rv); goto out_free_mem_pm; @@ -583,28 +590,58 @@ static ssize_t wdm_read return rv; }

-static int wdm_flush(struct file *file, fl_owner_t id) +static int wdm_wait_for_response(struct file *file, long timeout) { struct wdm_device *desc = file->private_data; + long rv; /* Use long here because (int) MAX_SCHEDULE_TIMEOUT < 0. */ + + /* + * Needs both flags. We cannot do with one because resetting it would + * cause a race with write() yet we need to signal a disconnect. + */ + rv = wait_event_interruptible_timeout(desc->wait, + !test_bit(WDM_IN_USE, &desc->flags) || + test_bit(WDM_DISCONNECTING, &desc->flags), + timeout);

- wait_event(desc->wait, - /* - * needs both flags. We cannot do with one - * because resetting it would cause a race - * with write() yet we need to signal - * a disconnect - */ - !test_bit(WDM_IN_USE, &desc->flags) || - test_bit(WDM_DISCONNECTING, &desc->flags)); - - /* cannot dereference desc->intf if WDM_DISCONNECTING */ + /* + * To report the correct error. This is best effort. + * We are inevitably racing with the hardware. + */ if (test_bit(WDM_DISCONNECTING, &desc->flags)) return -ENODEV; - if (desc->werr < 0) - dev_err(&desc->intf->dev, "Error in flush path: %d\n", - desc->werr); + if (!rv) + return -EIO; + if (rv < 0) + return -EINTR; + + spin_lock_irq(&desc->iuspin); + rv = desc->werr; + desc->werr = 0; + spin_unlock_irq(&desc->iuspin); + + return usb_translate_errors(rv); + +} + +/* + * You need to send a signal when you react to malicious or defective hardware. + * Also, don't abort when fsync() returned -EINVAL, for older kernels which do + * not implement wdm_flush() will return -EINVAL. + */ +static int wdm_fsync(struct file *file, loff_t start, loff_t end, int datasync) +{ + return wdm_wait_for_response(file, MAX_SCHEDULE_TIMEOUT); +}

- return usb_translate_errors(desc->werr); +/* + * Same with wdm_fsync(), except it uses finite timeout in order to react to + * malicious or defective hardware which ceased communication after close() was + * implicitly called due to process termination. + */ +static int wdm_flush(struct file *file, fl_owner_t id) +{ + return wdm_wait_for_response(file, WDM_FLUSH_TIMEOUT); }

static __poll_t wdm_poll(struct file *file, struct poll_table_struct *wait) @@ -729,6 +766,7 @@ static const struct file_operations wdm_fops = { .owner = THIS_MODULE, .read = wdm_read, .write = wdm_write, + .fsync = wdm_fsync, .open = wdm_open, .flush = wdm_flush, .release = wdm_release,

From: Lorenzo Colitti lorenzo@google.com

[ Upstream commit 7974ecd7d3c0f42a98566f281e44ea8573a2ad88 ]

Currently, enabling f_ncm at SuperSpeed Plus speeds results in an oops in config_ep_by_speed because ncm_set_alt passes in NULL ssp_descriptors. Fix this by re-using the SuperSpeed descriptors. This is safe because usb_assign_descriptors calls usb_copy_descriptors.

Tested: enabled f_ncm on a dwc3 gadget and 10Gbps link, ran iperf Reviewed-by: Maciej Żenczykowski maze@google.com Signed-off-by: Lorenzo Colitti lorenzo@google.com Signed-off-by: Felipe Balbi balbi@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/usb/gadget/function/f_ncm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/function/f_ncm.c b/drivers/usb/gadget/function/f_ncm.c index 09bc917d407d..e4aa370e86a9 100644 --- a/drivers/usb/gadget/function/f_ncm.c +++ b/drivers/usb/gadget/function/f_ncm.c @@ -1523,7 +1523,7 @@ static int ncm_bind(struct usb_configuration *c, struct usb_function *f) fs_ncm_notify_desc.bEndpointAddress;

status = usb_assign_descriptors(f, ncm_fs_function, ncm_hs_function, - ncm_ss_function, NULL); + ncm_ss_function, ncm_ss_function); if (status) goto fail;