August 2023 - Kernel - mailweb.openeuler.org

[PATCH openEuler-23.09,0/6] tcp compression bugfix
by Lu Wei 28 Aug '23

28 Aug '23

Lu Wei (1): tcp_comp: Fix receives err when server receives a large packet Wang Yufen (5): tcp_comp: Avoiding the null pointer problem of ctx in comp_stream_read tcp_comp: Fix comp_read_size return value tcp_comp: Fix ZSTD_decompressStream failed tcp_comp: Add dpkt to save decompressed skb tcp_comp: Del compressed_data and remaining_data from tcp_comp_context_rx net/ipv4/tcp_comp.c | 193 ++++++++++++++++++++++---------------------- 1 file changed, 98 insertions(+), 95 deletions(-) -- 2.31.1

1 6

[PATCH openEuler-23.09 00/15] *** Support qos scheduler ***
by Zhang Qiao 28 Aug '23

28 Aug '23

support qos scheduler. Zhang Qiao (15): sched: Introduce qos scheduler for co-location sched: Throttle qos cfs_rq when current cpu is running online task sched: Fix offline task can't be killed in a timely sched: Unthrottle the throttled cfs rq when offline rq sched: Unthrottle qos cfs rq when free a task group sched: bugfix setscheduler unlock cpuset_rwsem sched: Introduce handle priority reversion mechanism sched: enable CONFIG_QOS_SCHED on arm64 sched: Fix sleeping in atomic context at cpu_qos_write() sched/fair: Add qos_throttle_list node in struct cfs_rq sched: Throttle offline task at tracehook_notify_resume() sched/qos: Add qos_tg_{throttle,unthrottle}_{up,down} sched/fair: Update rq clock before unthrottle a qos cfs_rq sched/qos: Don't unthrottle cfs_rq when cfs_rq is throttled by qos sched: Enable qos scheduler config arch/arm64/configs/openeuler_defconfig | 1 + arch/x86/configs/openeuler_defconfig | 1 + include/linux/cgroup.h | 4 + include/linux/resume_user_mode.h | 5 + include/linux/sched.h | 11 + include/linux/sched/sysctl.h | 5 + init/Kconfig | 12 + kernel/cgroup/cgroup.c | 22 ++ kernel/sched/core.c | 155 ++++++++++++ kernel/sched/fair.c | 336 +++++++++++++++++++++++++ kernel/sched/sched.h | 12 + kernel/signal.c | 3 + kernel/sysctl.c | 24 ++ 13 files changed, 591 insertions(+) -- 2.25.1

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[PATCH openEuler-1.0-LTS] tracing: Fix cpu buffers unavailable due to 'record_disabled' missed
by Zheng Yejian 28 Aug '23

28 Aug '23

mainline inclusion from mainline-v6.5 commit b71645d6af10196c46cbe3732de2ea7d36b3ff6d category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7SHZP Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Trace ring buffer can no longer record anything after executing following commands at the shell prompt: # cd /sys/kernel/tracing # cat tracing_cpumask fff # echo 0 > tracing_cpumask # echo 1 > snapshot # echo fff > tracing_cpumask # echo 1 > tracing_on # echo "hello world" > trace_marker -bash: echo: write error: Bad file descriptor The root cause is that: 1. After `echo 0 > tracing_cpumask`, 'record_disabled' of cpu buffers in 'tr->array_buffer.buffer' became 1 (see tracing_set_cpumask()); 2. After `echo 1 > snapshot`, 'tr->array_buffer.buffer' is swapped with 'tr->max_buffer.buffer', then the 'record_disabled' became 0 (see update_max_tr()); 3. After `echo fff > tracing_cpumask`, the 'record_disabled' become -1; Then array_buffer and max_buffer are both unavailable due to value of 'record_disabled' is not 0. To fix it, enable or disable both array_buffer and max_buffer at the same time in tracing_set_cpumask(). Link: https://lkml.kernel.org/r/20230805033816.3284594-2-zhengyejian1@huawei.com Cc: <mhiramat(a)kernel.org> Cc: <vnagarnaik(a)google.com> Cc: <shuah(a)kernel.org> Fixes: 71babb2705e2 ("tracing: change CPU ring buffer state from tracing_cpumask") Signed-off-by: Zheng Yejian <zhengyejian1(a)huawei.com> Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> Signed-off-by: Zheng Yejian <zhengyejian1(a)huawei.com> --- kernel/trace/trace.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 1e1781ace916..fab69081d6d8 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -4249,11 +4249,17 @@ tracing_cpumask_write(struct file *filp, const char __user *ubuf, !cpumask_test_cpu(cpu, tracing_cpumask_new)) { atomic_inc(&per_cpu_ptr(tr->trace_buffer.data, cpu)->disabled); ring_buffer_record_disable_cpu(tr->trace_buffer.buffer, cpu); +#ifdef CONFIG_TRACER_MAX_TRACE + ring_buffer_record_disable_cpu(tr->max_buffer.buffer, cpu); +#endif } if (!cpumask_test_cpu(cpu, tr->tracing_cpumask) && cpumask_test_cpu(cpu, tracing_cpumask_new)) { atomic_dec(&per_cpu_ptr(tr->trace_buffer.data, cpu)->disabled); ring_buffer_record_enable_cpu(tr->trace_buffer.buffer, cpu); +#ifdef CONFIG_TRACER_MAX_TRACE + ring_buffer_record_enable_cpu(tr->max_buffer.buffer, cpu); +#endif } } arch_spin_unlock(&tr->max_lock); -- 2.25.1

2 1

[PATCH OLK-5.10] tracing: Fix cpu buffers unavailable due to 'record_disabled' missed
by Zheng Yejian 28 Aug '23

28 Aug '23

mainline inclusion from mainline-v6.5 commit b71645d6af10196c46cbe3732de2ea7d36b3ff6d category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7SHZP Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Trace ring buffer can no longer record anything after executing following commands at the shell prompt: # cd /sys/kernel/tracing # cat tracing_cpumask fff # echo 0 > tracing_cpumask # echo 1 > snapshot # echo fff > tracing_cpumask # echo 1 > tracing_on # echo "hello world" > trace_marker -bash: echo: write error: Bad file descriptor The root cause is that: 1. After `echo 0 > tracing_cpumask`, 'record_disabled' of cpu buffers in 'tr->array_buffer.buffer' became 1 (see tracing_set_cpumask()); 2. After `echo 1 > snapshot`, 'tr->array_buffer.buffer' is swapped with 'tr->max_buffer.buffer', then the 'record_disabled' became 0 (see update_max_tr()); 3. After `echo fff > tracing_cpumask`, the 'record_disabled' become -1; Then array_buffer and max_buffer are both unavailable due to value of 'record_disabled' is not 0. To fix it, enable or disable both array_buffer and max_buffer at the same time in tracing_set_cpumask(). Link: https://lkml.kernel.org/r/20230805033816.3284594-2-zhengyejian1@huawei.com Cc: <mhiramat(a)kernel.org> Cc: <vnagarnaik(a)google.com> Cc: <shuah(a)kernel.org> Fixes: 71babb2705e2 ("tracing: change CPU ring buffer state from tracing_cpumask") Signed-off-by: Zheng Yejian <zhengyejian1(a)huawei.com> Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org> Signed-off-by: Zheng Yejian <zhengyejian1(a)huawei.com> --- kernel/trace/trace.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index d003e1403ca2..3608cd3b12fd 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -4784,11 +4784,17 @@ int tracing_set_cpumask(struct trace_array *tr, !cpumask_test_cpu(cpu, tracing_cpumask_new)) { atomic_inc(&per_cpu_ptr(tr->array_buffer.data, cpu)->disabled); ring_buffer_record_disable_cpu(tr->array_buffer.buffer, cpu); +#ifdef CONFIG_TRACER_MAX_TRACE + ring_buffer_record_disable_cpu(tr->max_buffer.buffer, cpu); +#endif } if (!cpumask_test_cpu(cpu, tr->tracing_cpumask) && cpumask_test_cpu(cpu, tracing_cpumask_new)) { atomic_dec(&per_cpu_ptr(tr->array_buffer.data, cpu)->disabled); ring_buffer_record_enable_cpu(tr->array_buffer.buffer, cpu); +#ifdef CONFIG_TRACER_MAX_TRACE + ring_buffer_record_enable_cpu(tr->max_buffer.buffer, cpu); +#endif } } arch_spin_unlock(&tr->max_lock); -- 2.25.1

2 1

[PATCH openEuler-23.09 v2 00/24] ILP32 for ARM64
by Chen Jiahao 28 Aug '23

28 Aug '23

backport ILP32 for ARM64 patches to openEuler-23.09 Andrew Pinski (3): arm64: rename COMPAT to AARCH32_EL0 arm64: uapi: set __BITS_PER_LONG correctly for ILP32 and LP64 arm64:ilp32: add ARM64_ILP32 to Kconfig Dave Martin (1): arm64: signal: Make parse_user_sigframe() independent of rt_sigframe layout James Morse (1): ptrace: Add compat PTRACE_{G,S}ETSIGMASK handlers Philipp Tomsich (1): arm64:ilp32: add vdso-ilp32 and use for signal return Xiongfeng Wang (4): arm64: rename functions that reference compat term arm64: secomp: fix the secure computing mode 1 syscall check for ilp32 ilp32: avoid clearing upper 32 bits of syscall return value for ilp32 ilp32: skip ARM erratum 1418040 for ilp32 application Yury Norov (14): thread: move thread bits accessors to separated file arm64: ilp32: add documentation on the ILP32 ABI for ARM64 arm64: introduce is_a32_compat_{task,thread} for AArch32 compat arm64: ilp32: add is_ilp32_compat_{task,thread} and TIF_32BIT_AARCH64 arm64: introduce AUDIT_ARCH_AARCH64ILP32 for ilp32 arm64: introduce binfmt_elf32.c arm64: change compat_elf_hwcap and compat_elf_hwcap2 prefix to a32 arm64: ilp32: introduce binfmt_ilp32.c arm64: ilp32: share aarch32 syscall handlers arm64: ilp32: introduce syscall table for ILP32 arm64: signal: share lp64 signal structures and routines to ilp32 arm64: signal32: move ilp32 and aarch32 common code to separated file arm64: ilp32: introduce ilp32-specific sigframe and ucontext arm64: ptrace: handle ptrace_request differently for aarch32 and ilp32 Documentation/arm64/ilp32.txt | 52 +++ arch/arm64/Kconfig | 19 +- arch/arm64/Makefile | 3 + arch/arm64/include/asm/arch_timer.h | 4 +- arch/arm64/include/asm/compat.h | 18 +- arch/arm64/include/asm/elf.h | 32 +- arch/arm64/include/asm/fpsimd.h | 2 +- arch/arm64/include/asm/ftrace.h | 2 +- arch/arm64/include/asm/hwcap.h | 8 +- arch/arm64/include/asm/is_compat.h | 78 ++++ arch/arm64/include/asm/processor.h | 15 +- arch/arm64/include/asm/ptrace.h | 12 +- arch/arm64/include/asm/seccomp.h | 32 +- arch/arm64/include/asm/signal32.h | 31 +- arch/arm64/include/asm/signal32_common.h | 13 + arch/arm64/include/asm/signal_common.h | 391 +++++++++++++++++ arch/arm64/include/asm/signal_ilp32.h | 23 + arch/arm64/include/asm/syscall.h | 17 +- arch/arm64/include/asm/thread_info.h | 4 +- arch/arm64/include/asm/unistd.h | 5 + arch/arm64/include/asm/vdso.h | 9 + arch/arm64/include/uapi/asm/bitsperlong.h | 9 +- arch/arm64/include/uapi/asm/unistd.h | 15 +- arch/arm64/kernel/Makefile | 8 +- arch/arm64/kernel/armv8_deprecated.c | 12 +- arch/arm64/kernel/asm-offsets.c | 13 +- arch/arm64/kernel/binfmt_elf32.c | 27 ++ arch/arm64/kernel/binfmt_ilp32.c | 89 ++++ arch/arm64/kernel/cpufeature.c | 36 +- arch/arm64/kernel/cpuinfo.c | 18 +- arch/arm64/kernel/debug-monitors.c | 4 +- arch/arm64/kernel/entry-common.c | 6 +- arch/arm64/kernel/hw_breakpoint.c | 8 +- arch/arm64/kernel/perf_callchain.c | 28 +- arch/arm64/kernel/perf_regs.c | 4 +- arch/arm64/kernel/process.c | 15 +- arch/arm64/kernel/proton-pack.c | 2 +- arch/arm64/kernel/ptrace.c | 38 +- arch/arm64/kernel/signal.c | 397 +++--------------- arch/arm64/kernel/signal32.c | 97 ++--- arch/arm64/kernel/signal32_common.c | 37 ++ arch/arm64/kernel/signal_ilp32.c | 67 +++ arch/arm64/kernel/sys32.c | 104 +---- arch/arm64/kernel/sys32_common.c | 106 +++++ arch/arm64/kernel/sys_compat.c | 12 +- arch/arm64/kernel/sys_ilp32.c | 82 ++++ arch/arm64/kernel/syscall.c | 37 +- arch/arm64/kernel/traps.c | 5 +- arch/arm64/kernel/vdso-ilp32/.gitignore | 2 + arch/arm64/kernel/vdso-ilp32/Makefile | 108 +++++ arch/arm64/kernel/vdso-ilp32/vdso-ilp32.S | 22 + arch/arm64/kernel/vdso-ilp32/vdso-ilp32.lds.S | 88 ++++ arch/arm64/kernel/vdso.c | 46 +- arch/arm64/mm/fault.c | 2 +- include/linux/sched.h | 1 + include/linux/thread_bits.h | 87 ++++ include/linux/thread_info.h | 73 +--- include/uapi/linux/audit.h | 1 + kernel/ptrace.c | 52 ++- 59 files changed, 1765 insertions(+), 763 deletions(-) create mode 100644 Documentation/arm64/ilp32.txt create mode 100644 arch/arm64/include/asm/is_compat.h create mode 100644 arch/arm64/include/asm/signal32_common.h create mode 100644 arch/arm64/include/asm/signal_common.h create mode 100644 arch/arm64/include/asm/signal_ilp32.h create mode 100644 arch/arm64/kernel/binfmt_elf32.c create mode 100644 arch/arm64/kernel/binfmt_ilp32.c create mode 100644 arch/arm64/kernel/signal32_common.c create mode 100644 arch/arm64/kernel/signal_ilp32.c create mode 100644 arch/arm64/kernel/sys32_common.c create mode 100644 arch/arm64/kernel/sys_ilp32.c create mode 100644 arch/arm64/kernel/vdso-ilp32/.gitignore create mode 100644 arch/arm64/kernel/vdso-ilp32/Makefile create mode 100644 arch/arm64/kernel/vdso-ilp32/vdso-ilp32.S create mode 100644 arch/arm64/kernel/vdso-ilp32/vdso-ilp32.lds.S create mode 100644 include/linux/thread_bits.h -- 2.34.1

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[openEuler-22.03-LTS 0/2] introduce handle_fasteoi_edge_irq
by Yipeng Zou 28 Aug '23

28 Aug '23

introduce handle_fasteoi_edge_irq Yipeng Zou (2): genirq: introduce handle_fasteoi_edge_irq flow handler genirq: introduce handle_fasteoi_edge_irq for phytium drivers/irqchip/irq-gic-phytium-2500.c | 2 +- drivers/irqchip/irq-gic-v3.c | 2 +- include/linux/irq.h | 1 + kernel/irq/chip.c | 67 ++++++++++++++++++++++++++ 4 files changed, 70 insertions(+), 2 deletions(-) -- 2.17.1

1 2

[OLK-5.10 0/2] introduce handle_fasteoi_edge_irq
by Yipeng Zou 28 Aug '23

28 Aug '23

introduce handle_fasteoi_edge_irq Yipeng Zou (2): genirq: introduce handle_fasteoi_edge_irq flow handler genirq: introduce handle_fasteoi_edge_irq for phytium drivers/irqchip/irq-gic-phytium-2500.c | 2 +- drivers/irqchip/irq-gic-v3.c | 2 +- include/linux/irq.h | 1 + kernel/irq/chip.c | 67 ++++++++++++++++++++++++++ 4 files changed, 70 insertions(+), 2 deletions(-) -- 2.17.1

1 2

[PATCH openEuler-23.09 00/24] ILP32 for ARM64
by Chen Jiahao 28 Aug '23

28 Aug '23

backport ILP32 for ARM64 patches to openEuler-23.09 Andrew Pinski (3): arm64: rename COMPAT to AARCH32_EL0 arm64: uapi: set __BITS_PER_LONG correctly for ILP32 and LP64 arm64:ilp32: add ARM64_ILP32 to Kconfig Dave Martin (1): arm64: signal: Make parse_user_sigframe() independent of rt_sigframe layout James Morse (1): ptrace: Add compat PTRACE_{G,S}ETSIGMASK handlers Philipp Tomsich (1): arm64:ilp32: add vdso-ilp32 and use for signal return Xiongfeng Wang (4): arm64: rename functions that reference compat term arm64: secomp: fix the secure computing mode 1 syscall check for ilp32 ilp32: avoid clearing upper 32 bits of syscall return value for ilp32 ilp32: skip ARM erratum 1418040 for ilp32 application Yury Norov (14): thread: move thread bits accessors to separated file arm64: ilp32: add documentation on the ILP32 ABI for ARM64 arm64: introduce is_a32_compat_{task,thread} for AArch32 compat arm64: ilp32: add is_ilp32_compat_{task,thread} and TIF_32BIT_AARCH64 arm64: introduce AUDIT_ARCH_AARCH64ILP32 for ilp32 arm64: introduce binfmt_elf32.c arm64: change compat_elf_hwcap and compat_elf_hwcap2 prefix to a32 arm64: ilp32: introduce binfmt_ilp32.c arm64: ilp32: share aarch32 syscall handlers arm64: ilp32: introduce syscall table for ILP32 arm64: signal: share lp64 signal structures and routines to ilp32 arm64: signal32: move ilp32 and aarch32 common code to separated file arm64: ilp32: introduce ilp32-specific sigframe and ucontext arm64: ptrace: handle ptrace_request differently for aarch32 and ilp32 Documentation/arm64/ilp32.txt | 52 +++ arch/arm64/Kconfig | 19 +- arch/arm64/Makefile | 3 + arch/arm64/include/asm/arch_timer.h | 4 +- arch/arm64/include/asm/compat.h | 18 +- arch/arm64/include/asm/elf.h | 32 +- arch/arm64/include/asm/fpsimd.h | 2 +- arch/arm64/include/asm/ftrace.h | 2 +- arch/arm64/include/asm/hwcap.h | 8 +- arch/arm64/include/asm/is_compat.h | 78 ++++ arch/arm64/include/asm/processor.h | 15 +- arch/arm64/include/asm/ptrace.h | 12 +- arch/arm64/include/asm/seccomp.h | 32 +- arch/arm64/include/asm/signal32.h | 31 +- arch/arm64/include/asm/signal32_common.h | 13 + arch/arm64/include/asm/signal_common.h | 391 +++++++++++++++++ arch/arm64/include/asm/signal_ilp32.h | 23 + arch/arm64/include/asm/syscall.h | 17 +- arch/arm64/include/asm/thread_info.h | 4 +- arch/arm64/include/asm/unistd.h | 5 + arch/arm64/include/asm/vdso.h | 9 + arch/arm64/include/uapi/asm/bitsperlong.h | 9 +- arch/arm64/include/uapi/asm/unistd.h | 15 +- arch/arm64/kernel/Makefile | 8 +- arch/arm64/kernel/armv8_deprecated.c | 12 +- arch/arm64/kernel/asm-offsets.c | 13 +- arch/arm64/kernel/binfmt_elf32.c | 27 ++ arch/arm64/kernel/binfmt_ilp32.c | 89 ++++ arch/arm64/kernel/cpufeature.c | 36 +- arch/arm64/kernel/cpuinfo.c | 18 +- arch/arm64/kernel/debug-monitors.c | 4 +- arch/arm64/kernel/entry-common.c | 6 +- arch/arm64/kernel/hw_breakpoint.c | 8 +- arch/arm64/kernel/perf_callchain.c | 28 +- arch/arm64/kernel/perf_regs.c | 4 +- arch/arm64/kernel/process.c | 15 +- arch/arm64/kernel/proton-pack.c | 2 +- arch/arm64/kernel/ptrace.c | 38 +- arch/arm64/kernel/signal.c | 397 +++--------------- arch/arm64/kernel/signal32.c | 97 ++--- arch/arm64/kernel/signal32_common.c | 37 ++ arch/arm64/kernel/signal_ilp32.c | 67 +++ arch/arm64/kernel/sys32.c | 104 +---- arch/arm64/kernel/sys32_common.c | 106 +++++ arch/arm64/kernel/sys_compat.c | 12 +- arch/arm64/kernel/sys_ilp32.c | 82 ++++ arch/arm64/kernel/syscall.c | 37 +- arch/arm64/kernel/traps.c | 5 +- arch/arm64/kernel/vdso-ilp32/.gitignore | 2 + arch/arm64/kernel/vdso-ilp32/Makefile | 108 +++++ arch/arm64/kernel/vdso-ilp32/vdso-ilp32.S | 22 + arch/arm64/kernel/vdso-ilp32/vdso-ilp32.lds.S | 88 ++++ arch/arm64/kernel/vdso.c | 46 +- arch/arm64/mm/fault.c | 2 +- include/linux/sched.h | 1 + include/linux/thread_bits.h | 87 ++++ include/linux/thread_info.h | 73 +--- include/uapi/linux/audit.h | 1 + kernel/ptrace.c | 52 ++- 59 files changed, 1765 insertions(+), 763 deletions(-) create mode 100644 Documentation/arm64/ilp32.txt create mode 100644 arch/arm64/include/asm/is_compat.h create mode 100644 arch/arm64/include/asm/signal32_common.h create mode 100644 arch/arm64/include/asm/signal_common.h create mode 100644 arch/arm64/include/asm/signal_ilp32.h create mode 100644 arch/arm64/kernel/binfmt_elf32.c create mode 100644 arch/arm64/kernel/binfmt_ilp32.c create mode 100644 arch/arm64/kernel/signal32_common.c create mode 100644 arch/arm64/kernel/signal_ilp32.c create mode 100644 arch/arm64/kernel/sys32_common.c create mode 100644 arch/arm64/kernel/sys_ilp32.c create mode 100644 arch/arm64/kernel/vdso-ilp32/.gitignore create mode 100644 arch/arm64/kernel/vdso-ilp32/Makefile create mode 100644 arch/arm64/kernel/vdso-ilp32/vdso-ilp32.S create mode 100644 arch/arm64/kernel/vdso-ilp32/vdso-ilp32.lds.S create mode 100644 include/linux/thread_bits.h -- 2.34.1

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[PATCH openEuler-1.0-LTS] ipvlan: Fix a reference count leak warning in ipvlan_ns_exit()
by Lu Wei 28 Aug '23

28 Aug '23

mainline inclusion from mainline-v6.4 commit 043d5f68d0ccdda91029b4b6dce7eeffdcfad281 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7WB3H Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- There are two network devices(veth1 and veth3) in ns1, and ipvlan1 with L3S mode and ipvlan2 with L2 mode are created based on them as figure (1). In this case, ipvlan_register_nf_hook() will be called to register nf hook which is needed by ipvlans in L3S mode in ns1 and value of ipvl_nf_hook_refcnt is set to 1. (1) ns1 ns2 ------------ ------------ veth1--ipvlan1 (L3S) veth3--ipvlan2 (L2) (2) ns1 ns2 ------------ ------------ veth1--ipvlan1 (L3S) ipvlan2 (L2) veth3 | | |------->-------->--------->-------- migrate When veth3 migrates from ns1 to ns2 as figure (2), veth3 will register in ns2 and calls call_netdevice_notifiers with NETDEV_REGISTER event: dev_change_net_namespace call_netdevice_notifiers ipvlan_device_event ipvlan_migrate_l3s_hook ipvlan_register_nf_hook(newnet) (I) ipvlan_unregister_nf_hook(oldnet) (II) In function ipvlan_migrate_l3s_hook(), ipvl_nf_hook_refcnt in ns1 is not 0 since veth1 with ipvlan1 still in ns1, (I) and (II) will be called to register nf_hook in ns2 and unregister nf_hook in ns1. As a result, ipvl_nf_hook_refcnt in ns1 is decreased incorrectly and this in ns2 is increased incorrectly. When the second net namespace is removed, a reference count leak warning in ipvlan_ns_exit() will be triggered. This patch add a check before ipvlan_migrate_l3s_hook() is called. The warning can be triggered as follows: $ ip netns add ns1 $ ip netns add ns2 $ ip netns exec ns1 ip link add veth1 type veth peer name veth2 $ ip netns exec ns1 ip link add veth3 type veth peer name veth4 $ ip netns exec ns1 ip link add ipv1 link veth1 type ipvlan mode l3s $ ip netns exec ns1 ip link add ipv2 link veth3 type ipvlan mode l2 $ ip netns exec ns1 ip link set veth3 netns ns2 $ ip net del ns2 Fixes: 3133822f5ac1 ("ipvlan: use pernet operations and restrict l3s hooks to master netns") Signed-off-by: Lu Wei <luwei32(a)huawei.com> Reviewed-by: Florian Westphal <fw(a)strlen.de> Link: https://lore.kernel.org/r/20230817145449.141827-1-luwei32@huawei.com Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> conflict: drivers/net/ipvlan/ipvlan_main.c Signed-off-by: Lu Wei <luwei32(a)huawei.com> --- drivers/net/ipvlan/ipvlan_main.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c index 403852adaff5..9057cdf9b216 100644 --- a/drivers/net/ipvlan/ipvlan_main.c +++ b/drivers/net/ipvlan/ipvlan_main.c @@ -875,12 +875,14 @@ static int ipvlan_device_event(struct notifier_block *unused, write_pnet(&port->pnet, newnet); - old_vnet = net_generic(oldnet, ipvlan_netid); - if (!old_vnet->ipvl_nf_hook_refcnt) - break; + if (port->mode == IPVLAN_MODE_L3S) { + old_vnet = net_generic(oldnet, ipvlan_netid); + if (!old_vnet->ipvl_nf_hook_refcnt) + break; - ipvlan_register_nf_hook(newnet); - ipvlan_unregister_nf_hook(oldnet); + ipvlan_register_nf_hook(newnet); + ipvlan_unregister_nf_hook(oldnet); + } break; } case NETDEV_UNREGISTER: -- 2.34.1

2 1

[PATCH OLK-5.10] SUNRPC: don't pause on incomplete allocation
by ZhaoLong Wang 28 Aug '23

28 Aug '23

From: NeilBrown <neilb(a)suse.de> mainline inclusion from mainline-v5.15-rc1 commit e38b3f20059426a0adbde014ff71071739ab5226 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7RRY4 CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… ------------------------------------------------- alloc_pages_bulk_array() attempts to allocate at least one page based on the provided pages, and then opportunistically allocates more if that can be done without dropping the spinlock. So if it returns fewer than requested, that could just mean that it needed to drop the lock. In that case, try again immediately. Only pause for a time if no progress could be made. Reported-and-tested-by: Mike Javorski <mike.javorski(a)gmail.com> Reported-and-tested-by: Lothar Paltins <lopa(a)mailbox.org> Fixes: f6e70aab9dfe ("SUNRPC: refresh rq_pages using a bulk page allocator") Signed-off-by: NeilBrown <neilb(a)suse.de> Acked-by: Mel Gorman <mgorman(a)suse.com> Signed-off-by: Chuck Lever <chuck.lever(a)oracle.com> Signed-off-by: ZhaoLong Wang <wangzhaolong1(a)huawei.com> Conflicts: net/sunrpc/svc_xprt.c --- net/sunrpc/svc_xprt.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c index 362487f3a6de..f56b4df6ce28 100644 --- a/net/sunrpc/svc_xprt.c +++ b/net/sunrpc/svc_xprt.c @@ -643,7 +643,7 @@ static int svc_alloc_arg(struct svc_rqst *rqstp) { struct svc_serv *serv = rqstp->rq_server; struct xdr_buf *arg = &rqstp->rq_arg; - unsigned long pages, filled; + unsigned long pages, filled, ret; pages = (serv->sv_max_mesg + 2 * PAGE_SIZE) >> PAGE_SHIFT; if (pages > RPCSVC_MAXPAGES) { @@ -653,11 +653,12 @@ static int svc_alloc_arg(struct svc_rqst *rqstp) pages = RPCSVC_MAXPAGES; } - for (;;) { - filled = alloc_pages_bulk_array(GFP_KERNEL, pages, - rqstp->rq_pages); - if (filled == pages) - break; + for (filled = 0; filled < pages; filled = ret) { + ret = alloc_pages_bulk_array(GFP_KERNEL, pages, + rqstp->rq_pages); + if (ret > filled) + /* Made progress, don't sleep yet */ + continue; set_current_state(TASK_INTERRUPTIBLE); if (signalled() || kthread_should_stop()) { -- 2.39.2

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