From: Michael Ellerman mpe@ellerman.id.au

[ Upstream commit eead089311f4d935ab5d1d8fbb0c42ad44699ada ]

lkp reported a build error in fsp2.o:

CC arch/powerpc/platforms/44x/fsp2.o {standard input}:577: Error: unsupported relocation against base

Which comes from:

pr_err("GESR0: 0x%08x\n", mfdcr(base + PLB4OPB_GESR0));

Where our mfdcr() macro is stringifying "base + PLB4OPB_GESR0", and passing that to the assembler, which obviously doesn't work.

The mfdcr() macro already checks that the argument is constant using __builtin_constant_p(), and if not calls the out-of-line version of mfdcr(). But in this case GCC is smart enough to notice that "base + PLB4OPB_GESR0" will be constant, even though it's not something we can immediately stringify into a register number.

Segher pointed out that passing the register number to the inline asm as a constant would be better, and in fact it fixes the build error, presumably because it gives GCC a chance to resolve the value.

While we're at it, change mtdcr() similarly.

Reported-by: kernel test robot lkp@intel.com Suggested-by: Segher Boessenkool segher@kernel.crashing.org Signed-off-by: Michael Ellerman mpe@ellerman.id.au Acked-by: Feng Tang feng.tang@intel.com Link: https://lore.kernel.org/r/20210218123058.748882-1-mpe@ellerman.id.au Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- arch/powerpc/include/asm/dcr-native.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/include/asm/dcr-native.h b/arch/powerpc/include/asm/dcr-native.h index 151dff555f503..9d9e323f5e9b5 100644 --- a/arch/powerpc/include/asm/dcr-native.h +++ b/arch/powerpc/include/asm/dcr-native.h @@ -66,8 +66,8 @@ static inline void mtdcrx(unsigned int reg, unsigned int val) #define mfdcr(rn) \ ({unsigned int rval; \ if (__builtin_constant_p(rn) && rn < 1024) \ - asm volatile("mfdcr %0," __stringify(rn) \ - : "=r" (rval)); \ + asm volatile("mfdcr %0, %1" : "=r" (rval) \ + : "n" (rn)); \ else if (likely(cpu_has_feature(CPU_FTR_INDEXED_DCR))) \ rval = mfdcrx(rn); \ else \ @@ -77,8 +77,8 @@ static inline void mtdcrx(unsigned int reg, unsigned int val) #define mtdcr(rn, v) \ do { \ if (__builtin_constant_p(rn) && rn < 1024) \ - asm volatile("mtdcr " __stringify(rn) ",%0" \ - : : "r" (v)); \ + asm volatile("mtdcr %0, %1" \ + : : "n" (rn), "r" (v)); \ else if (likely(cpu_has_feature(CPU_FTR_INDEXED_DCR))) \ mtdcrx(rn, v); \ else \

From: Tong Zhang ztong0001@gmail.com

[ Upstream commit a2bd45834e83d6c5a04d397bde13d744a4812dfc ]

lanai_dev_open() can fail. When it fail, lanai->base is unmapped and the pci device is disabled. The caller, lanai_init_one(), then tries to run atm_dev_deregister(). This will subsequently call lanai_dev_close() and use the already released MMIO area.

To fix this issue, set the lanai->base to NULL if open fail, and test the flag in lanai_dev_close().

[ 8.324153] lanai: lanai_start() failed, err=19 [ 8.324819] lanai(itf 0): shutting down interface [ 8.325211] BUG: unable to handle page fault for address: ffffc90000180024 [ 8.325781] #PF: supervisor write access in kernel mode [ 8.326215] #PF: error_code(0x0002) - not-present page [ 8.326641] PGD 100000067 P4D 100000067 PUD 100139067 PMD 10013a067 PTE 0 [ 8.327206] Oops: 0002 [#1] SMP KASAN NOPTI [ 8.327557] CPU: 0 PID: 95 Comm: modprobe Not tainted 5.11.0-rc7-00090-gdcc0b49040c7 #12 [ 8.328229] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-48-gd9c812dda519-4 [ 8.329145] RIP: 0010:lanai_dev_close+0x4f/0xe5 [lanai] [ 8.329587] Code: 00 48 c7 c7 00 d3 01 c0 e8 49 4e 0a c2 48 8d bd 08 02 00 00 e8 6e 52 14 c1 48 80 [ 8.330917] RSP: 0018:ffff8881029ef680 EFLAGS: 00010246 [ 8.331196] RAX: 000000000003fffe RBX: ffff888102fb4800 RCX: ffffffffc001a98a [ 8.331572] RDX: ffffc90000180000 RSI: 0000000000000246 RDI: ffff888102fb4000 [ 8.331948] RBP: ffff888102fb4000 R08: ffffffff8115da8a R09: ffffed102053deaa [ 8.332326] R10: 0000000000000003 R11: ffffed102053dea9 R12: ffff888102fb48a4 [ 8.332701] R13: ffffffffc00123c0 R14: ffff888102fb4b90 R15: ffff888102fb4b88 [ 8.333077] FS: 00007f08eb9056a0(0000) GS:ffff88815b400000(0000) knlGS:0000000000000000 [ 8.333502] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.333806] CR2: ffffc90000180024 CR3: 0000000102a28000 CR4: 00000000000006f0 [ 8.334182] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 8.334557] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 8.334932] Call Trace: [ 8.335066] atm_dev_deregister+0x161/0x1a0 [atm] [ 8.335324] lanai_init_one.cold+0x20c/0x96d [lanai] [ 8.335594] ? lanai_send+0x2a0/0x2a0 [lanai] [ 8.335831] local_pci_probe+0x6f/0xb0 [ 8.336039] pci_device_probe+0x171/0x240 [ 8.336255] ? pci_device_remove+0xe0/0xe0 [ 8.336475] ? kernfs_create_link+0xb6/0x110 [ 8.336704] ? sysfs_do_create_link_sd.isra.0+0x76/0xe0 [ 8.336983] really_probe+0x161/0x420 [ 8.337181] driver_probe_device+0x6d/0xd0 [ 8.337401] device_driver_attach+0x82/0x90 [ 8.337626] ? device_driver_attach+0x90/0x90 [ 8.337859] __driver_attach+0x60/0x100 [ 8.338065] ? device_driver_attach+0x90/0x90 [ 8.338298] bus_for_each_dev+0xe1/0x140 [ 8.338511] ? subsys_dev_iter_exit+0x10/0x10 [ 8.338745] ? klist_node_init+0x61/0x80 [ 8.338956] bus_add_driver+0x254/0x2a0 [ 8.339164] driver_register+0xd3/0x150 [ 8.339370] ? 0xffffffffc0028000 [ 8.339550] do_one_initcall+0x84/0x250 [ 8.339755] ? trace_event_raw_event_initcall_finish+0x150/0x150 [ 8.340076] ? free_vmap_area_noflush+0x1a5/0x5c0 [ 8.340329] ? unpoison_range+0xf/0x30 [ 8.340532] ? ____kasan_kmalloc.constprop.0+0x84/0xa0 [ 8.340806] ? unpoison_range+0xf/0x30 [ 8.341014] ? unpoison_range+0xf/0x30 [ 8.341217] do_init_module+0xf8/0x350 [ 8.341419] load_module+0x3fe6/0x4340 [ 8.341621] ? vm_unmap_ram+0x1d0/0x1d0 [ 8.341826] ? ____kasan_kmalloc.constprop.0+0x84/0xa0 [ 8.342101] ? module_frob_arch_sections+0x20/0x20 [ 8.342358] ? __do_sys_finit_module+0x108/0x170 [ 8.342604] __do_sys_finit_module+0x108/0x170 [ 8.342841] ? __ia32_sys_init_module+0x40/0x40 [ 8.343083] ? file_open_root+0x200/0x200 [ 8.343298] ? do_sys_open+0x85/0xe0 [ 8.343491] ? filp_open+0x50/0x50 [ 8.343675] ? exit_to_user_mode_prepare+0xfc/0x130 [ 8.343935] do_syscall_64+0x33/0x40 [ 8.344132] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 8.344401] RIP: 0033:0x7f08eb887cf7 [ 8.344594] Code: 48 89 57 30 48 8b 04 24 48 89 47 38 e9 1d a0 02 00 48 89 f8 48 89 f7 48 89 d6 41 [ 8.345565] RSP: 002b:00007ffcd5c98ad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 8.345962] RAX: ffffffffffffffda RBX: 00000000008fea70 RCX: 00007f08eb887cf7 [ 8.346336] RDX: 0000000000000000 RSI: 00000000008fd9e0 RDI: 0000000000000003 [ 8.346711] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000001 [ 8.347085] R10: 00007f08eb8eb300 R11: 0000000000000246 R12: 00000000008fd9e0 [ 8.347460] R13: 0000000000000000 R14: 00000000008fddd0 R15: 0000000000000001 [ 8.347836] Modules linked in: lanai(+) atm [ 8.348065] CR2: ffffc90000180024 [ 8.348244] ---[ end trace 7fdc1c668f2003e5 ]--- [ 8.348490] RIP: 0010:lanai_dev_close+0x4f/0xe5 [lanai] [ 8.348772] Code: 00 48 c7 c7 00 d3 01 c0 e8 49 4e 0a c2 48 8d bd 08 02 00 00 e8 6e 52 14 c1 48 80 [ 8.349745] RSP: 0018:ffff8881029ef680 EFLAGS: 00010246 [ 8.350022] RAX: 000000000003fffe RBX: ffff888102fb4800 RCX: ffffffffc001a98a [ 8.350397] RDX: ffffc90000180000 RSI: 0000000000000246 RDI: ffff888102fb4000 [ 8.350772] RBP: ffff888102fb4000 R08: ffffffff8115da8a R09: ffffed102053deaa [ 8.351151] R10: 0000000000000003 R11: ffffed102053dea9 R12: ffff888102fb48a4 [ 8.351525] R13: ffffffffc00123c0 R14: ffff888102fb4b90 R15: ffff888102fb4b88 [ 8.351918] FS: 00007f08eb9056a0(0000) GS:ffff88815b400000(0000) knlGS:0000000000000000 [ 8.352343] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 8.352647] CR2: ffffc90000180024 CR3: 0000000102a28000 CR4: 00000000000006f0 [ 8.353022] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 8.353397] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 8.353958] modprobe (95) used greatest stack depth: 26216 bytes left

Signed-off-by: Tong Zhang ztong0001@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/atm/lanai.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c index 5f8e009b2da1c..34e6e4b90f741 100644 --- a/drivers/atm/lanai.c +++ b/drivers/atm/lanai.c @@ -2238,6 +2238,7 @@ static int lanai_dev_open(struct atm_dev *atmdev) conf1_write(lanai); #endif iounmap(lanai->base); + lanai->base = NULL; error_pci: pci_disable_device(lanai->pci); error: @@ -2250,6 +2251,8 @@ static int lanai_dev_open(struct atm_dev *atmdev) static void lanai_dev_close(struct atm_dev *atmdev) { struct lanai_dev *lanai = (struct lanai_dev *) atmdev->dev_data; + if (lanai->base==NULL) + return; printk(KERN_INFO DEV_LABEL "(itf %d): shutting down interface\n", lanai->number); lanai_timed_poll_stop(lanai); @@ -2559,7 +2562,7 @@ static int lanai_init_one(struct pci_dev *pci, struct atm_dev *atmdev; int result;

- lanai = kmalloc(sizeof(*lanai), GFP_KERNEL); + lanai = kzalloc(sizeof(*lanai), GFP_KERNEL); if (lanai == NULL) { printk(KERN_ERR DEV_LABEL ": couldn't allocate dev_data structure!\n");

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

[ Upstream commit 7a766381634da19fc837619b0a34590498d9d29a ]

When ixgbe_fdir_write_perfect_filter_82599() fails, input allocated by kzalloc() has not been freed, which leads to memleak.

Signed-off-by: Dinghao Liu dinghao.liu@zju.edu.cn Reviewed-by: Paul Menzel pmenzel@molgen.mpg.de Tested-by: Tony Brelinski tonyx.brelinski@intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index b52585fbb295d..598492b003896 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -9491,8 +9491,10 @@ static int ixgbe_configure_clsu32(struct ixgbe_adapter *adapter, ixgbe_atr_compute_perfect_hash_82599(&input->filter, mask); err = ixgbe_fdir_write_perfect_filter_82599(hw, &input->filter, input->sw_idx, queue); - if (!err) - ixgbe_update_ethtool_fdir_entry(adapter, input, input->sw_idx); + if (err) + goto err_out_w_lock; + + ixgbe_update_ethtool_fdir_entry(adapter, input, input->sw_idx); spin_unlock(&adapter->fdir_perfect_lock);

if ((uhtid != 0x800) && (adapter->jump_tables[uhtid]))

From: Denis Efremov efremov@linux.com

[ Upstream commit 155b23e6e53475ca3b8c2a946299b4d4dd6a5a1e ]

RXMAC_BC_FRM_CNT_COUNT added to mp->rx_bcasts twice in a row in niu_xmac_interrupt(). Remove the second addition.

Signed-off-by: Denis Efremov efremov@linux.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/ethernet/sun/niu.c | 2 -- 1 file changed, 2 deletions(-)

diff --git a/drivers/net/ethernet/sun/niu.c b/drivers/net/ethernet/sun/niu.c index d84501441edde..602a2025717ab 100644 --- a/drivers/net/ethernet/sun/niu.c +++ b/drivers/net/ethernet/sun/niu.c @@ -3933,8 +3933,6 @@ static void niu_xmac_interrupt(struct niu *np) mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT; if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP) mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT; - if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP) - mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT; if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP) mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT; if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)

From: Yang Li yang.lee@linux.alibaba.com

[ Upstream commit 6e5d5791730b55a1f987e1db84b078b91eb49e99 ]

fixed the following coccicheck: ./drivers/gpio/gpiolib-acpi.c:176:7-27: ERROR: Threaded IRQ with no primary handler requested without IRQF_ONESHOT

Make sure threaded IRQs without a primary handler are always request with IRQF_ONESHOT

Reported-by: Abaci Robot abaci@linux.alibaba.com Signed-off-by: Yang Li yang.lee@linux.alibaba.com Acked-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/gpio/gpiolib-acpi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 18f5973b9697f..4ad34c6803ade 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -177,7 +177,7 @@ static void acpi_gpiochip_request_irq(struct acpi_gpio_chip *acpi_gpio, int ret, value;

ret = request_threaded_irq(event->irq, NULL, event->handler, - event->irqflags, "ACPI:Event", event); + event->irqflags | IRQF_ONESHOT, "ACPI:Event", event); if (ret) { dev_err(acpi_gpio->chip->parent, "Failed to setup interrupt handler for %d\n",

From: Frank Sorenson sorenson@redhat.com

[ Upstream commit ad3dbe35c833c2d4d0bbf3f04c785d32f931e7c9 ]

CREATE requests return a post_op_fh3, rather than nfs_fh3. The post_op_fh3 includes an extra word to indicate 'handle_follows'.

Without that additional word, create fails when full 64-byte filehandles are in use.

Add NFS3_post_op_fh_sz, and correct the size calculation for NFS3_createres_sz.

Signed-off-by: Frank Sorenson sorenson@redhat.com Signed-off-by: Anna Schumaker Anna.Schumaker@Netapp.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- fs/nfs/nfs3xdr.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index 9956453aa6ffc..0ed419bb02b0f 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -34,6 +34,7 @@ */ #define NFS3_fhandle_sz (1+16) #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ +#define NFS3_post_op_fh_sz (1+NFS3_fh_sz) #define NFS3_sattr_sz (15) #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) @@ -71,7 +72,7 @@ #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) -#define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) +#define NFS3_createres_sz (1+NFS3_post_op_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2)

From: Jia-Ju Bai baijiaju1990@gmail.com

[ Upstream commit 62765d39553cfd1ad340124fe1e280450e8c89e2 ]

When priv->rx_skbuff or priv->tx_skbuff is NULL, no error return code of uhdlc_init() is assigned. To fix this bug, ret is assigned with -ENOMEM in these cases.

Reported-by: TOTE Robot oslab@tsinghua.edu.cn Signed-off-by: Jia-Ju Bai baijiaju1990@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/wan/fsl_ucc_hdlc.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wan/fsl_ucc_hdlc.c b/drivers/net/wan/fsl_ucc_hdlc.c index 9ab04ef532f34..5df6e85e7ccb7 100644 --- a/drivers/net/wan/fsl_ucc_hdlc.c +++ b/drivers/net/wan/fsl_ucc_hdlc.c @@ -201,14 +201,18 @@ static int uhdlc_init(struct ucc_hdlc_private *priv) priv->rx_skbuff = kcalloc(priv->rx_ring_size, sizeof(*priv->rx_skbuff), GFP_KERNEL); - if (!priv->rx_skbuff) + if (!priv->rx_skbuff) { + ret = -ENOMEM; goto free_ucc_pram; + }

priv->tx_skbuff = kcalloc(priv->tx_ring_size, sizeof(*priv->tx_skbuff), GFP_KERNEL); - if (!priv->tx_skbuff) + if (!priv->tx_skbuff) { + ret = -ENOMEM; goto free_rx_skbuff; + }

priv->skb_curtx = 0; priv->skb_dirtytx = 0;

From: Tong Zhang ztong0001@gmail.com

[ Upstream commit 4416e98594dc04590ebc498fc4e530009535c511 ]

this one is similar to the phy_data allocation fix in uPD98402, the driver allocate the idt77105_priv and store to dev_data but later dereference using dev->dev_data, which will cause null-ptr-dereference.

fix this issue by changing dev_data to phy_data so that PRIV(dev) can work correctly.

Signed-off-by: Tong Zhang ztong0001@gmail.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/atm/idt77105.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/atm/idt77105.c b/drivers/atm/idt77105.c index 0a67487c0b1d3..a2ecb4190f789 100644 --- a/drivers/atm/idt77105.c +++ b/drivers/atm/idt77105.c @@ -261,7 +261,7 @@ static int idt77105_start(struct atm_dev *dev) { unsigned long flags;

- if (!(dev->dev_data = kmalloc(sizeof(struct idt77105_priv),GFP_KERNEL))) + if (!(dev->phy_data = kmalloc(sizeof(struct idt77105_priv),GFP_KERNEL))) return -ENOMEM; PRIV(dev)->dev = dev; spin_lock_irqsave(&idt77105_priv_lock, flags); @@ -336,7 +336,7 @@ static int idt77105_stop(struct atm_dev *dev) else idt77105_all = walk->next; dev->phy = NULL; - dev->dev_data = NULL; + dev->phy_data = NULL; kfree(walk); break; }

From: Peter Zijlstra peterz@infradead.org

[ Upstream commit d5b0e0677bfd5efd17c5bbb00156931f0d41cb85 ]

Jakub reported that:

static struct net_device *rtl8139_init_board(struct pci_dev *pdev) { ... u64_stats_init(&tp->rx_stats.syncp); u64_stats_init(&tp->tx_stats.syncp); ... }

results in lockdep getting confused between the RX and TX stats lock. This is because u64_stats_init() is an inline calling seqcount_init(), which is a macro using a static variable to generate a lockdep class.

By wrapping that in an inline, we negate the effect of the macro and fold the static key variable, hence the confusion.

Fix by also making u64_stats_init() a macro for the case where it matters, leaving the other case an inline for argument validation etc.

Reported-by: Jakub Kicinski kuba@kernel.org Debugged-by: "Ahmed S. Darwish" a.darwish@linutronix.de Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Tested-by: "Erhard F." erhard_f@mailbox.org Link: https://lkml.kernel.org/r/YEXicy6+9MksdLZh@hirez.programming.kicks-ass.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- include/linux/u64_stats_sync.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/include/linux/u64_stats_sync.h b/include/linux/u64_stats_sync.h index a27604f99ed04..11096b561dab6 100644 --- a/include/linux/u64_stats_sync.h +++ b/include/linux/u64_stats_sync.h @@ -69,12 +69,13 @@ struct u64_stats_sync { };

+#if BITS_PER_LONG == 32 && defined(CONFIG_SMP) +#define u64_stats_init(syncp) seqcount_init(&(syncp)->seq) +#else static inline void u64_stats_init(struct u64_stats_sync *syncp) { -#if BITS_PER_LONG == 32 && defined(CONFIG_SMP) - seqcount_init(&syncp->seq); -#endif } +#endif

static inline void u64_stats_update_begin(struct u64_stats_sync *syncp) {

From: "J. Bruce Fields" bfields@redhat.com

[ Upstream commit 4f8be1f53bf615102d103c0509ffa9596f65b718 ]

The NFSv4 protocol doesn't have any notion of reomoving an attribute, so removexattr(path,"system.nfs4_acl") doesn't make sense.

There's no documented return value. Arguably it could be EOPNOTSUPP but I'm a little worried an application might take that to mean that we don't support ACLs or xattrs. How about EINVAL?

Signed-off-by: J. Bruce Fields bfields@redhat.com Signed-off-by: Anna Schumaker Anna.Schumaker@Netapp.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- fs/nfs/nfs4proc.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 9b819774f7f67..19bbb45ce3e62 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -5526,6 +5526,9 @@ static int __nfs4_proc_set_acl(struct inode *inode, const void *buf, size_t bufl unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE); int ret, i;

+ /* You can't remove system.nfs4_acl: */ + if (buflen == 0) + return -EINVAL; if (!nfs4_server_supports_acls(server)) return -EOPNOTSUPP; if (npages > ARRAY_SIZE(pages))

From: Sergei Trofimovich slyfox@gentoo.org

[ Upstream commit 0ceb1ace4a2778e34a5414e5349712ae4dc41d85 ]

In https://bugs.gentoo.org/769614 Dmitry noticed that `ptrace(PTRACE_GET_SYSCALL_INFO)` does not work for syscalls called via glibc's syscall() wrapper.

ia64 has two ways to call syscalls from userspace: via `break` and via `eps` instructions.

The difference is in stack layout:

1. `eps` creates simple stack frame: no locals, in{0..7} == out{0..8} 2. `break` uses userspace stack frame: may be locals (glibc provides one), in{0..7} == out{0..8}.

Both work fine in syscall handling cde itself.

But `ptrace(PTRACE_GET_SYSCALL_INFO)` uses unwind mechanism to re-extract syscall arguments but it does not account for locals.

The change always skips locals registers. It should not change `eps` path as kernel's handler already enforces locals=0 and fixes `break`.

Tested on v5.10 on rx3600 machine (ia64 9040 CPU).

Link: https://lkml.kernel.org/r/20210221002554.333076-1-slyfox@gentoo.org Link: https://bugs.gentoo.org/769614 Signed-off-by: Sergei Trofimovich slyfox@gentoo.org Reported-by: Dmitry V. Levin ldv@altlinux.org Cc: Oleg Nesterov oleg@redhat.com Cc: John Paul Adrian Glaubitz glaubitz@physik.fu-berlin.de Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- arch/ia64/kernel/ptrace.c | 24 ++++++++++++++++++------ 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c index 6d50ede0ed691..41d42e8d441c8 100644 --- a/arch/ia64/kernel/ptrace.c +++ b/arch/ia64/kernel/ptrace.c @@ -2147,27 +2147,39 @@ static void syscall_get_set_args_cb(struct unw_frame_info *info, void *data) { struct syscall_get_set_args *args = data; struct pt_regs *pt = args->regs; - unsigned long *krbs, cfm, ndirty; + unsigned long *krbs, cfm, ndirty, nlocals, nouts; int i, count;

if (unw_unwind_to_user(info) < 0) return;

+ /* + * We get here via a few paths: + * - break instruction: cfm is shared with caller. + * syscall args are in out= regs, locals are non-empty. + * - epsinstruction: cfm is set by br.call + * locals don't exist. + * + * For both cases argguments are reachable in cfm.sof - cfm.sol. + * CFM: [ ... | sor: 17..14 | sol : 13..7 | sof : 6..0 ] + */ cfm = pt->cr_ifs; + nlocals = (cfm >> 7) & 0x7f; /* aka sol */ + nouts = (cfm & 0x7f) - nlocals; /* aka sof - sol */ krbs = (unsigned long *)info->task + IA64_RBS_OFFSET/8; ndirty = ia64_rse_num_regs(krbs, krbs + (pt->loadrs >> 19));

count = 0; if (in_syscall(pt)) - count = min_t(int, args->n, cfm & 0x7f); + count = min_t(int, args->n, nouts);

+ /* Iterate over outs. */ for (i = 0; i < count; i++) { + int j = ndirty + nlocals + i + args->i; if (args->rw) - *ia64_rse_skip_regs(krbs, ndirty + i + args->i) = - args->args[i]; + *ia64_rse_skip_regs(krbs, j) = args->args[i]; else - args->args[i] = *ia64_rse_skip_regs(krbs, - ndirty + i + args->i); + args->args[i] = *ia64_rse_skip_regs(krbs, j); }

if (!args->rw) {

From: Mian Yousaf Kaukab ykaukab@suse.de

commit 804741ac7b9f2fdebe3740cb0579cb8d94d49e60 upstream.

Since commit 8e850f25b581 ("net: socionext: Stop PHY before resetting netsec") netsec_netdev_init() power downs phy before resetting the controller. However, the state is not restored once the reset is complete. As a result it is not possible to bring up network on a platform with Broadcom BCM5482 phy.

Fix the issue by restoring phy power state after controller reset is complete.

Fixes: 8e850f25b581 ("net: socionext: Stop PHY before resetting netsec") Cc: stable@vger.kernel.org Signed-off-by: Mian Yousaf Kaukab ykaukab@suse.de Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/ethernet/socionext/netsec.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/socionext/netsec.c b/drivers/net/ethernet/socionext/netsec.c index 027367b9cc480..3693a59b6d010 100644 --- a/drivers/net/ethernet/socionext/netsec.c +++ b/drivers/net/ethernet/socionext/netsec.c @@ -1386,14 +1386,17 @@ static int netsec_netdev_init(struct net_device *ndev) goto err1;

/* set phy power down */ - data = netsec_phy_read(priv->mii_bus, priv->phy_addr, MII_BMCR) | - BMCR_PDOWN; - netsec_phy_write(priv->mii_bus, priv->phy_addr, MII_BMCR, data); + data = netsec_phy_read(priv->mii_bus, priv->phy_addr, MII_BMCR); + netsec_phy_write(priv->mii_bus, priv->phy_addr, MII_BMCR, + data | BMCR_PDOWN);

ret = netsec_reset_hardware(priv, true); if (ret) goto err2;

+ /* Restore phy power state */ + netsec_phy_write(priv->mii_bus, priv->phy_addr, MII_BMCR, data); + return 0; err2: netsec_free_dring(priv, NETSEC_RING_RX);

From: Sean Nyekjaer sean@geanix.com

commit c1b2028315c6b15e8d6725e0d5884b15887d3daa upstream.

When mouting a squashfs image created without inode compression it fails with: "unable to read inode lookup table"

It turns out that the BLOCK_OFFSET is missing when checking the SQUASHFS_METADATA_SIZE agaist the actual size.

Link: https://lkml.kernel.org/r/20210226092903.1473545-1-sean@geanix.com Fixes: eabac19e40c0 ("squashfs: add more sanity checks in inode lookup") Signed-off-by: Sean Nyekjaer sean@geanix.com Acked-by: Phillip Lougher phillip@squashfs.org.uk Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- fs/squashfs/export.c | 8 ++++++-- fs/squashfs/squashfs_fs.h | 1 + 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/fs/squashfs/export.c b/fs/squashfs/export.c index d2a806416c3ab..1d406a2094a56 100644 --- a/fs/squashfs/export.c +++ b/fs/squashfs/export.c @@ -165,14 +165,18 @@ __le64 *squashfs_read_inode_lookup_table(struct super_block *sb, start = le64_to_cpu(table[n]); end = le64_to_cpu(table[n + 1]);

- if (start >= end || (end - start) > SQUASHFS_METADATA_SIZE) { + if (start >= end + || (end - start) > + (SQUASHFS_METADATA_SIZE + SQUASHFS_BLOCK_OFFSET)) { kfree(table); return ERR_PTR(-EINVAL); } }

start = le64_to_cpu(table[indexes - 1]); - if (start >= lookup_table_start || (lookup_table_start - start) > SQUASHFS_METADATA_SIZE) { + if (start >= lookup_table_start || + (lookup_table_start - start) > + (SQUASHFS_METADATA_SIZE + SQUASHFS_BLOCK_OFFSET)) { kfree(table); return ERR_PTR(-EINVAL); } diff --git a/fs/squashfs/squashfs_fs.h b/fs/squashfs/squashfs_fs.h index 4e6853f084d07..10e93345b6153 100644 --- a/fs/squashfs/squashfs_fs.h +++ b/fs/squashfs/squashfs_fs.h @@ -30,6 +30,7 @@

/* size of metadata (inode and directory) blocks */ #define SQUASHFS_METADATA_SIZE 8192 +#define SQUASHFS_BLOCK_OFFSET 2

/* default size of block device I/O */ #ifdef CONFIG_SQUASHFS_4K_DEVBLK_SIZE

From: Horia Geantă horia.geanta@nxp.com

commit 9c3a16f88385e671b63a0de7b82b85e604a80f42 upstream.

Crypto engine (CAAM) on LS1046A platform is configured HW-coherent, mark accordingly the DT node.

As reported by Greg and Sascha, and explained by Robin, lack of "dma-coherent" property for an IP that is configured HW-coherent can lead to problems, e.g. on v5.11:

kernel BUG at drivers/crypto/caam/jr.c:247! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.11.0-20210225-3-00039-g434215968816-dirty #12 Hardware name: TQ TQMLS1046A SoM on Arkona AT1130 (C300) board (DT) pstate: 60000005 (nZCv daif -PAN -UAO -TCO BTYPE=--) pc : caam_jr_dequeue+0x98/0x57c lr : caam_jr_dequeue+0x98/0x57c sp : ffff800010003d50 x29: ffff800010003d50 x28: ffff8000118d4000 x27: ffff8000118d4328 x26: 00000000000001f0 x25: ffff0008022be480 x24: ffff0008022c6410 x23: 00000000000001f1 x22: ffff8000118d4329 x21: 0000000000004d80 x20: 00000000000001f1 x19: 0000000000000001 x18: 0000000000000020 x17: 0000000000000000 x16: 0000000000000015 x15: ffff800011690230 x14: 2e2e2e2e2e2e2e2e x13: 2e2e2e2e2e2e2020 x12: 3030303030303030 x11: ffff800011700a38 x10: 00000000fffff000 x9 : ffff8000100ada30 x8 : ffff8000116a8a38 x7 : 0000000000000001 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 00000000ffffffff x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000001800 Call trace: caam_jr_dequeue+0x98/0x57c tasklet_action_common.constprop.0+0x164/0x18c tasklet_action+0x44/0x54 __do_softirq+0x160/0x454 __irq_exit_rcu+0x164/0x16c irq_exit+0x1c/0x30 __handle_domain_irq+0xc0/0x13c gic_handle_irq+0x5c/0xf0 el1_irq+0xb4/0x180 arch_cpu_idle+0x18/0x30 default_idle_call+0x3c/0x1c0 do_idle+0x23c/0x274 cpu_startup_entry+0x34/0x70 rest_init+0xdc/0xec arch_call_rest_init+0x1c/0x28 start_kernel+0x4ac/0x4e4 Code: 91392021 912c2000 d377d8c6 97f24d96 (d4210000)

Cc: stable@vger.kernel.org # v4.10+ Fixes: 8126d88162a5 ("arm64: dts: add QorIQ LS1046A SoC support") Link: https://lore.kernel.org/linux-crypto/fe6faa24-d8f7-d18f-adfa-44fa0caa1598@ar... Reported-by: Greg Ungerer gerg@kernel.org Reported-by: Sascha Hauer s.hauer@pengutronix.de Tested-by: Sascha Hauer s.hauer@pengutronix.de Signed-off-by: Horia Geantă horia.geanta@nxp.com Acked-by: Greg Ungerer gerg@kernel.org Acked-by: Li Yang leoyang.li@nxp.com Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi | 1 + 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi index f4eb4d3b6cabf..3452971a8e1c2 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls1046a.dtsi @@ -243,6 +243,7 @@ ranges = <0x0 0x00 0x1700000 0x100000>; reg = <0x00 0x1700000 0x0 0x100000>; interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>; + dma-coherent;

sec_jr0: jr@10000 { compatible = "fsl,sec-v5.4-job-ring",

From: Horia Geantă horia.geanta@nxp.com

commit 4fb3a074755b7737c4081cffe0ccfa08c2f2d29d upstream.

Crypto engine (CAAM) on LS1043A platform is configured HW-coherent, mark accordingly the DT node.

Lack of "dma-coherent" property for an IP that is configured HW-coherent can lead to problems, similar to what has been reported for LS1046A.

Cc: stable@vger.kernel.org # v4.8+ Fixes: 63dac35b58f4 ("arm64: dts: ls1043a: add crypto node") Link: https://lore.kernel.org/linux-crypto/fe6faa24-d8f7-d18f-adfa-44fa0caa1598@ar... Signed-off-by: Horia Geantă horia.geanta@nxp.com Acked-by: Li Yang leoyang.li@nxp.com Signed-off-by: Shawn Guo shawnguo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi | 1 + 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi index b9c0f2de8f12c..3ec60e33f2997 100644 --- a/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi +++ b/arch/arm64/boot/dts/freescale/fsl-ls1043a.dtsi @@ -237,6 +237,7 @@ ranges = <0x0 0x00 0x1700000 0x100000>; reg = <0x00 0x1700000 0x0 0x100000>; interrupts = <0 75 0x4>; + dma-coherent;

sec_jr0: jr@10000 { compatible = "fsl,sec-v5.4-job-ring",

From: Mikulas Patocka mpatocka@redhat.com

commit 4edbe1d7bcffcd6269f3b5eb63f710393ff2ec7a upstream.

If there are not any dm devices, we need to zero the "dev" argument in the first structure dm_name_list. However, this can cause out of bounds write, because the "needed" variable is zero and len may be less than eight.

Fix this bug by reporting DM_BUFFER_FULL_FLAG if the result buffer is too small to hold the "nl->dev" value.

Signed-off-by: Mikulas Patocka mpatocka@redhat.com Reported-by: Dan Carpenter dan.carpenter@oracle.com Cc: stable@vger.kernel.org Signed-off-by: Mike Snitzer snitzer@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/md/dm-ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index 439277f48ff8b..17cbad58834fc 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -529,7 +529,7 @@ static int list_devices(struct file *filp, struct dm_ioctl *param, size_t param_ * Grab our output buffer. */ nl = orig_nl = get_result_buffer(param, param_size, &len); - if (len < needed) { + if (len < needed || len < sizeof(nl->dev)) { param->flags |= DM_BUFFER_FULL_FLAG; goto out; }

From: Maciej Fijalkowski maciej.fijalkowski@intel.com

[ Upstream commit edbea922025169c0e5cdca5ebf7bf5374cc5566c ]

Currently, veth_xmit() would call the skb_record_rx_queue() only when there is XDP program loaded on peer interface in native mode.

If peer has XDP prog in generic mode, then netif_receive_generic_xdp() has a call to netif_get_rxqueue(skb), so for multi-queue veth it will not be possible to grab a correct rxq.

To fix that, store queue_mapping independently of XDP prog presence on peer interface.

Fixes: 638264dc9022 ("veth: Support per queue XDP ring") Signed-off-by: Maciej Fijalkowski maciej.fijalkowski@intel.com Signed-off-by: Daniel Borkmann daniel@iogearbox.net Acked-by: Toshiaki Makita toshiaki.makita1@gmail.com Link: https://lore.kernel.org/bpf/20210303152903.11172-1-maciej.fijalkowski@intel.... Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/veth.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 2abbad1abaf2e..fd1843fd256bb 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -197,8 +197,7 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev) if (rxq < rcv->real_num_rx_queues) { rq = &rcv_priv->rq[rxq]; rcv_xdp = rcu_access_pointer(rq->xdp_prog); - if (rcv_xdp) - skb_record_rx_queue(skb, rxq); + skb_record_rx_queue(skb, rxq); }

if (likely(veth_forward_skb(rcv, skb, rq, rcv_xdp) == NET_RX_SUCCESS)) {

From: Eric Dumazet edumazet@google.com

[ Upstream commit dd4fa1dae9f4847cc1fd78ca468ad69e16e5db3e ]

macvlan_count_rx() can be called from process context, it is thus necessary to disable preemption before calling u64_stats_update_begin()

syzbot was able to spot this on 32bit arch:

WARNING: CPU: 1 PID: 4632 at include/linux/seqlock.h:271 __seqprop_assert include/linux/seqlock.h:271 [inline] WARNING: CPU: 1 PID: 4632 at include/linux/seqlock.h:271 __seqprop_assert.constprop.0+0xf0/0x11c include/linux/seqlock.h:269 Modules linked in: Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 4632 Comm: kworker/1:3 Not tainted 5.12.0-rc2-syzkaller #0 Hardware name: ARM-Versatile Express Workqueue: events macvlan_process_broadcast Backtrace: [<82740468>] (dump_backtrace) from [<827406dc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:252) r7:00000080 r6:60000093 r5:00000000 r4:8422a3c4 [<827406c4>] (show_stack) from [<82751b58>] (__dump_stack lib/dump_stack.c:79 [inline]) [<827406c4>] (show_stack) from [<82751b58>] (dump_stack+0xb8/0xe8 lib/dump_stack.c:120) [<82751aa0>] (dump_stack) from [<82741270>] (panic+0x130/0x378 kernel/panic.c:231) r7:830209b4 r6:84069ea4 r5:00000000 r4:844350d0 [<82741140>] (panic) from [<80244924>] (__warn+0xb0/0x164 kernel/panic.c:605) r3:8404ec8c r2:00000000 r1:00000000 r0:830209b4 r7:0000010f [<80244874>] (__warn) from [<82741520>] (warn_slowpath_fmt+0x68/0xd4 kernel/panic.c:628) r7:81363f70 r6:0000010f r5:83018e50 r4:00000000 [<827414bc>] (warn_slowpath_fmt) from [<81363f70>] (__seqprop_assert include/linux/seqlock.h:271 [inline]) [<827414bc>] (warn_slowpath_fmt) from [<81363f70>] (__seqprop_assert.constprop.0+0xf0/0x11c include/linux/seqlock.h:269) r8:5a109000 r7:0000000f r6:a568dac0 r5:89802300 r4:00000001 [<81363e80>] (__seqprop_assert.constprop.0) from [<81364af0>] (u64_stats_update_begin include/linux/u64_stats_sync.h:128 [inline]) [<81363e80>] (__seqprop_assert.constprop.0) from [<81364af0>] (macvlan_count_rx include/linux/if_macvlan.h:47 [inline]) [<81363e80>] (__seqprop_assert.constprop.0) from [<81364af0>] (macvlan_broadcast+0x154/0x26c drivers/net/macvlan.c:291) r5:89802300 r4:8a927740 [<8136499c>] (macvlan_broadcast) from [<81365020>] (macvlan_process_broadcast+0x258/0x2d0 drivers/net/macvlan.c:317) r10:81364f78 r9:8a86d000 r8:8a9c7e7c r7:8413aa5c r6:00000000 r5:00000000 r4:89802840 [<81364dc8>] (macvlan_process_broadcast) from [<802696a4>] (process_one_work+0x2d4/0x998 kernel/workqueue.c:2275) r10:00000008 r9:8404ec98 r8:84367a02 r7:ddfe6400 r6:ddfe2d40 r5:898dac80 r4:8a86d43c [<802693d0>] (process_one_work) from [<80269dcc>] (worker_thread+0x64/0x54c kernel/workqueue.c:2421) r10:00000008 r9:8a9c6000 r8:84006d00 r7:ddfe2d78 r6:898dac94 r5:ddfe2d40 r4:898dac80 [<80269d68>] (worker_thread) from [<80271f40>] (kthread+0x184/0x1a4 kernel/kthread.c:292) r10:85247e64 r9:898dac80 r8:80269d68 r7:00000000 r6:8a9c6000 r5:89a2ee40 r4:8a97bd00 [<80271dbc>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:158) Exception stack(0x8a9c7fb0 to 0x8a9c7ff8)

Fixes: 412ca1550cbe ("macvlan: Move broadcasts into a work queue") Signed-off-by: Eric Dumazet edumazet@google.com Cc: Herbert Xu herbert@gondor.apana.org.au Reported-by: syzbot syzkaller@googlegroups.com Acked-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- include/linux/if_macvlan.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/linux/if_macvlan.h b/include/linux/if_macvlan.h index 2e55e4cdbd8aa..1261559d70b41 100644 --- a/include/linux/if_macvlan.h +++ b/include/linux/if_macvlan.h @@ -43,13 +43,14 @@ static inline void macvlan_count_rx(const struct macvlan_dev *vlan, if (likely(success)) { struct vlan_pcpu_stats *pcpu_stats;

- pcpu_stats = this_cpu_ptr(vlan->pcpu_stats); + pcpu_stats = get_cpu_ptr(vlan->pcpu_stats); u64_stats_update_begin(&pcpu_stats->syncp); pcpu_stats->rx_packets++; pcpu_stats->rx_bytes += len; if (multicast) pcpu_stats->rx_multicast++; u64_stats_update_end(&pcpu_stats->syncp); + put_cpu_ptr(vlan->pcpu_stats); } else { this_cpu_inc(vlan->pcpu_stats->rx_errors); }

From: Vitaly Lifshits vitaly.lifshits@intel.com

[ Upstream commit 21f857f0321d0d0ea9b1a758bd55dc63d1cb2437 ]

A possible race condition was found in e1000_reset_task, after discovering a similar issue in igb driver via commit 024a8168b749 ("igb: reinit_locked() should be called with rtnl_lock").

Added rtnl_lock() and rtnl_unlock() to avoid this.

Fixes: bc7f75fa9788 ("[E1000E]: New pci-express e1000 driver (currently for ICH9 devices only)") Suggested-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Vitaly Lifshits vitaly.lifshits@intel.com Tested-by: Dvora Fuxbrumer dvorax.fuxbrumer@linux.intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/ethernet/intel/e1000e/netdev.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index 7583f893ef6e6..d3ed370e73161 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -5922,15 +5922,19 @@ static void e1000_reset_task(struct work_struct *work) struct e1000_adapter *adapter; adapter = container_of(work, struct e1000_adapter, reset_task);

+ rtnl_lock(); /* don't run the task if already down */ - if (test_bit(__E1000_DOWN, &adapter->state)) + if (test_bit(__E1000_DOWN, &adapter->state)) { + rtnl_unlock(); return; + }

if (!(adapter->flags & FLAG_RESTART_NOW)) { e1000e_dump(adapter); e_err("Reset adapter unexpectedly\n"); } e1000e_reinit_locked(adapter); + rtnl_unlock(); }

/**

From: Lv Yunlong lyl2019@mail.ustc.edu.cn

[ Upstream commit db74623a3850db99cb9692fda9e836a56b74198d ]

In qlcnic_83xx_get_minidump_template, fw_dump->tmpl_hdr was freed by vfree(). But unfortunately, it is used when extended is true.

Fixes: 7061b2bdd620e ("qlogic: Deletion of unnecessary checks before two function calls") Signed-off-by: Lv Yunlong lyl2019@mail.ustc.edu.cn Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c index f34ae8c75bc5e..61a39d167c8bc 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c @@ -1426,6 +1426,7 @@ void qlcnic_83xx_get_minidump_template(struct qlcnic_adapter *adapter)

if (fw_dump->tmpl_hdr == NULL || current_version > prev_version) { vfree(fw_dump->tmpl_hdr); + fw_dump->tmpl_hdr = NULL;

if (qlcnic_83xx_md_check_extended_dump_capability(adapter)) extended = !qlcnic_83xx_extend_md_capab(adapter); @@ -1444,6 +1445,8 @@ void qlcnic_83xx_get_minidump_template(struct qlcnic_adapter *adapter) struct qlcnic_83xx_dump_template_hdr *hdr;

hdr = fw_dump->tmpl_hdr; + if (!hdr) + return; hdr->drv_cap_mask = 0x1f; fw_dump->cap_mask = 0x1f; dev_info(&pdev->dev,

From: Florian Westphal fw@strlen.de

[ Upstream commit b58f33d49e426dc66e98ed73afb5d97b15a25f2d ]

Before this change, the mask is never included in the netlink message, so "conntrack -E expect" always prints 0.0.0.0.

In older kernels the l3num callback struct was passed as argument, based on tuple->src.l3num. After the l3num indirection got removed, the call chain is based on m.src.l3num, but this value is 0xffff.

Init l3num to the correct value.

Fixes: f957be9d349a3 ("netfilter: conntrack: remove ctnetlink callbacks from l3 protocol trackers") Signed-off-by: Florian Westphal fw@strlen.de Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- net/netfilter/nf_conntrack_netlink.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index 0b89609a6e9d6..15c9fbcd32f29 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -2656,6 +2656,7 @@ static int ctnetlink_exp_dump_mask(struct sk_buff *skb, memset(&m, 0xFF, sizeof(m)); memcpy(&m.src.u3, &mask->src.u3, sizeof(m.src.u3)); m.src.u.all = mask->src.u.all; + m.src.l3num = tuple->src.l3num; m.dst.protonum = tuple->dst.protonum;

nest_parms = nla_nest_start(skb, CTA_EXPECT_MASK | NLA_F_NESTED);

From: Angelo Dureghello angelo@kernel-space.org

[ Upstream commit 47c5e474bc1e1061fb037d13b5000b38967eb070 ]

For cases when flexcan is built-in, bitrate is still not set at registering. So flexcan_chip_freeze() generates:

[ 1.860000] *** ZERO DIVIDE *** FORMAT=4 [ 1.860000] Current process id is 1 [ 1.860000] BAD KERNEL TRAP: 00000000 [ 1.860000] PC: [<402e70c8>] flexcan_chip_freeze+0x1a/0xa8

To allow chip freeze, using an hardcoded timeout when bitrate is still not set.

Fixes: ec15e27cc890 ("can: flexcan: enable RX FIFO after FRZ/HALT valid") Link: https://lore.kernel.org/r/20210315231510.650593-1-angelo@kernel-space.org Signed-off-by: Angelo Dureghello angelo@kernel-space.org [mkl: use if instead of ? operator] Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/can/flexcan.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index cb6bc20585428..d4dfa0247ebbc 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -422,9 +422,15 @@ static int flexcan_chip_disable(struct flexcan_priv *priv) static int flexcan_chip_freeze(struct flexcan_priv *priv) { struct flexcan_regs __iomem *regs = priv->regs; - unsigned int timeout = 1000 * 1000 * 10 / priv->can.bittiming.bitrate; + unsigned int timeout; + u32 bitrate = priv->can.bittiming.bitrate; u32 reg;

+ if (bitrate) + timeout = 1000 * 1000 * 10 / bitrate; + else + timeout = FLEXCAN_TIMEOUT_US / 10; + reg = priv->read(&regs->mcr); reg |= FLEXCAN_MCR_FRZ | FLEXCAN_MCR_HALT; priv->write(reg, &regs->mcr);

From: Tong Zhang ztong0001@gmail.com

[ Upstream commit 6e2fe01dd6f98da6cae8b07cd5cfa67abc70d97d ]

Currently doing modprobe c_can_pci will make the kernel complain:

Unbalanced pm_runtime_enable!

this is caused by pm_runtime_enable() called before pm is initialized.

This fix is similar to 227619c3ff7c, move those pm_enable/disable code to c_can_platform.

Fixes: 4cdd34b26826 ("can: c_can: Add runtime PM support to Bosch C_CAN/D_CAN controller") Link: http://lore.kernel.org/r/20210302025542.987600-1-ztong0001@gmail.com Signed-off-by: Tong Zhang ztong0001@gmail.com Tested-by: Uwe Kleine-König u.kleine-koenig@pengutronix.de Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/can/c_can/c_can.c | 24 +----------------------- drivers/net/can/c_can/c_can_platform.c | 6 +++++- 2 files changed, 6 insertions(+), 24 deletions(-)

diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 24c6015f6c92b..2278c5fff5c69 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -212,18 +212,6 @@ static const struct can_bittiming_const c_can_bittiming_const = { .brp_inc = 1, };

-static inline void c_can_pm_runtime_enable(const struct c_can_priv *priv) -{ - if (priv->device) - pm_runtime_enable(priv->device); -} - -static inline void c_can_pm_runtime_disable(const struct c_can_priv *priv) -{ - if (priv->device) - pm_runtime_disable(priv->device); -} - static inline void c_can_pm_runtime_get_sync(const struct c_can_priv *priv) { if (priv->device) @@ -1318,7 +1306,6 @@ static const struct net_device_ops c_can_netdev_ops = {

int register_c_can_dev(struct net_device *dev) { - struct c_can_priv *priv = netdev_priv(dev); int err;

/* Deactivate pins to prevent DRA7 DCAN IP from being @@ -1328,28 +1315,19 @@ int register_c_can_dev(struct net_device *dev) */ pinctrl_pm_select_sleep_state(dev->dev.parent);

- c_can_pm_runtime_enable(priv); - dev->flags |= IFF_ECHO; /* we support local echo */ dev->netdev_ops = &c_can_netdev_ops;

err = register_candev(dev); - if (err) - c_can_pm_runtime_disable(priv); - else + if (!err) devm_can_led_init(dev); - return err; } EXPORT_SYMBOL_GPL(register_c_can_dev);

void unregister_c_can_dev(struct net_device *dev) { - struct c_can_priv *priv = netdev_priv(dev); - unregister_candev(dev); - - c_can_pm_runtime_disable(priv); } EXPORT_SYMBOL_GPL(unregister_c_can_dev);

diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c index b5145a7f874c2..f2b0408ce87d1 100644 --- a/drivers/net/can/c_can/c_can_platform.c +++ b/drivers/net/can/c_can/c_can_platform.c @@ -29,6 +29,7 @@ #include <linux/list.h> #include <linux/io.h> #include <linux/platform_device.h> +#include <linux/pm_runtime.h> #include <linux/clk.h> #include <linux/of.h> #include <linux/of_device.h> @@ -385,6 +386,7 @@ static int c_can_plat_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dev); SET_NETDEV_DEV(dev, &pdev->dev);

+ pm_runtime_enable(priv->device); ret = register_c_can_dev(dev); if (ret) { dev_err(&pdev->dev, "registering %s failed (err=%d)\n", @@ -397,6 +399,7 @@ static int c_can_plat_probe(struct platform_device *pdev) return 0;

exit_free_device: + pm_runtime_disable(priv->device); free_c_can_dev(dev); exit: dev_err(&pdev->dev, "probe failed\n"); @@ -407,9 +410,10 @@ static int c_can_plat_probe(struct platform_device *pdev) static int c_can_plat_remove(struct platform_device *pdev) { struct net_device *dev = platform_get_drvdata(pdev); + struct c_can_priv *priv = netdev_priv(dev);

unregister_c_can_dev(dev); - + pm_runtime_disable(priv->device); free_c_can_dev(dev);

return 0;

From: Johannes Berg johannes.berg@intel.com

[ Upstream commit 1944015fe9c1d9fa5e9eb7ffbbb5ef8954d6753b ]

Coverity reported the strange "if (~...)" condition that's always true. It suggested that ! was intended instead of ~, but upon further analysis I'm convinced that what really was intended was a comparison to 0xff/0xffff (in HT/VHT cases respectively), since this indicates that all of the rates are enabled.

Change the comparison accordingly.

I'm guessing this never really mattered because a reset to not having a rate mask is basically equivalent to having a mask that enables all rates.

Reported-by: Colin Ian King colin.king@canonical.com Fixes: 2ffbe6d33366 ("mac80211: fix and optimize MCS mask handling") Fixes: b119ad6e726c ("mac80211: add rate mask logic for vht rates") Reviewed-by: Colin Ian King colin.king@canonical.com Link: https://lore.kernel.org/r/20210212112213.36b38078f569.I8546a20c80bc1669058eb... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- net/mac80211/cfg.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 9926455dd546d..f484f9fc62ca9 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -2777,14 +2777,14 @@ static int ieee80211_set_bitrate_mask(struct wiphy *wiphy, continue;

for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) { - if (~sdata->rc_rateidx_mcs_mask[i][j]) { + if (sdata->rc_rateidx_mcs_mask[i][j] != 0xff) { sdata->rc_has_mcs_mask[i] = true; break; } }

for (j = 0; j < NL80211_VHT_NSS_MAX; j++) { - if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) { + if (sdata->rc_rateidx_vht_mcs_mask[i][j] != 0xffff) { sdata->rc_has_vht_mcs_mask[i] = true; break; }

From: Corentin Labbe clabbe@baylibre.com

[ Upstream commit 014dfa26ce1c647af09bf506285ef67e0e3f0a6b ]

MTU cannot be changed on dwmac-sun8i. (ip link set eth0 mtu xxx returning EINVAL) This is due to tx_fifo_size being 0, since this value is used to compute valid MTU range. Like dwmac-sunxi (with commit 806fd188ce2a ("net: stmmac: dwmac-sunxi: Provide TX and RX fifo sizes")) dwmac-sun8i need to have tx and rx fifo sizes set. I have used values from datasheets. After this patch, setting a non-default MTU (like 1000) value works and network is still useable.

Tested-on: sun8i-h3-orangepi-pc Tested-on: sun8i-r40-bananapi-m2-ultra Tested-on: sun50i-a64-bananapi-m64 Tested-on: sun50i-h5-nanopi-neo-plus2 Tested-on: sun50i-h6-pine-h64 Fixes: 9f93ac8d408 ("net-next: stmmac: Add dwmac-sun8i") Reported-by: Belisko Marek marek.belisko@gmail.com Signed-off-by: Corentin Labbe clabbe@baylibre.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c index 1e5e831718dbd..4382deaeb570d 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c @@ -1179,6 +1179,8 @@ static int sun8i_dwmac_probe(struct platform_device *pdev) plat_dat->init = sun8i_dwmac_init; plat_dat->exit = sun8i_dwmac_exit; plat_dat->setup = sun8i_dwmac_setup; + plat_dat->tx_fifo_size = 4096; + plat_dat->rx_fifo_size = 16384;

ret = sun8i_dwmac_init(pdev, plat_dat->bsp_priv); if (ret)

From: Pavel Tatashin pasha.tatashin@soleen.com

[ Upstream commit 141f8202cfa4192c3af79b6cbd68e7760bb01b5a ]

The ppos points to a position in the old kernel memory (and in case of arm64 in the crash kernel since elfcorehdr is passed as a segment). The function should update the ppos by the amount that was read. This bug is not exposed by accident, but other platforms update this value properly. So, fix it in ARM64 version of elfcorehdr_read() as well.

Signed-off-by: Pavel Tatashin pasha.tatashin@soleen.com Fixes: e62aaeac426a ("arm64: kdump: provide /proc/vmcore file") Reviewed-by: Tyler Hicks tyhicks@linux.microsoft.com Link: https://lore.kernel.org/r/20210319205054.743368-1-pasha.tatashin@soleen.com Signed-off-by: Will Deacon will@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- arch/arm64/kernel/crash_dump.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/kernel/crash_dump.c b/arch/arm64/kernel/crash_dump.c index f46d57c314430..76905a2585505 100644 --- a/arch/arm64/kernel/crash_dump.c +++ b/arch/arm64/kernel/crash_dump.c @@ -67,5 +67,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf, ssize_t elfcorehdr_read(char *buf, size_t count, u64 *ppos) { memcpy(buf, phys_to_virt((phys_addr_t)*ppos), count); + *ppos += count; + return count; }

From: Potnuri Bharat Teja bharat@chelsio.com

[ Upstream commit 3408be145a5d6418ff955fe5badde652be90e700 ]

Not setting the ipv6 bit while destroying ipv6 listening servers may result in potential fatal adapter errors due to lookup engine memory hash errors. Therefore always set ipv6 field while destroying ipv6 listening servers.

Fixes: 830662f6f032 ("RDMA/cxgb4: Add support for active and passive open connection with IPv6 address") Link: https://lore.kernel.org/r/20210324190453.8171-1-bharat@chelsio.com Signed-off-by: Potnuri Bharat Teja bharat@chelsio.com Reviewed-by: Leon Romanovsky leonro@nvidia.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/infiniband/hw/cxgb4/cm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index 3fd3dfa3478b7..b728a1bf916f4 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -3517,13 +3517,13 @@ int c4iw_destroy_listen(struct iw_cm_id *cm_id) ep->com.local_addr.ss_family == AF_INET) { err = cxgb4_remove_server_filter( ep->com.dev->rdev.lldi.ports[0], ep->stid, - ep->com.dev->rdev.lldi.rxq_ids[0], 0); + ep->com.dev->rdev.lldi.rxq_ids[0], false); } else { struct sockaddr_in6 *sin6; c4iw_init_wr_wait(ep->com.wr_waitp); err = cxgb4_remove_server( ep->com.dev->rdev.lldi.ports[0], ep->stid, - ep->com.dev->rdev.lldi.rxq_ids[0], 0); + ep->com.dev->rdev.lldi.rxq_ids[0], true); if (err) goto done; err = c4iw_wait_for_reply(&ep->com.dev->rdev, ep->com.wr_waitp,

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

[ Upstream commit d3d40f237480abf3268956daf18cdc56edd32834 ]

This reverts commit cc00bcaa589914096edef7fb87ca5cee4a166b5c.

This (and the preceding) patch basically re-implemented the RCU mechanisms of patch 784544739a25. That patch was replaced because of the performance problems that it created when replacing tables. Now, we have the same issue: the call to synchronize_rcu() makes replacing tables slower by as much as an order of magnitude.

Prior to using RCU a script calling "iptables" approx. 200 times was taking 1.16s. With RCU this increased to 11.59s.

Revert these patches and fix the issue in a different way.

Signed-off-by: Mark Tomlinson mark.tomlinson@alliedtelesis.co.nz Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- include/linux/netfilter/x_tables.h | 5 +-- net/ipv4/netfilter/arp_tables.c | 14 ++++----- net/ipv4/netfilter/ip_tables.c | 14 ++++----- net/ipv6/netfilter/ip6_tables.c | 14 ++++----- net/netfilter/x_tables.c | 49 +++++++++++++++++++++--------- 5 files changed, 56 insertions(+), 40 deletions(-)

diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h index 728d7716bf4f4..9077b3ebea08c 100644 --- a/include/linux/netfilter/x_tables.h +++ b/include/linux/netfilter/x_tables.h @@ -227,7 +227,7 @@ struct xt_table { unsigned int valid_hooks;

/* Man behind the curtain... */ - struct xt_table_info __rcu *private; + struct xt_table_info *private;

/* Set this to THIS_MODULE if you are a module, otherwise NULL */ struct module *me; @@ -449,9 +449,6 @@ xt_get_per_cpu_counter(struct xt_counters *cnt, unsigned int cpu)

struct nf_hook_ops *xt_hook_ops_alloc(const struct xt_table *, nf_hookfn *);

-struct xt_table_info -*xt_table_get_private_protected(const struct xt_table *table); - #ifdef CONFIG_COMPAT #include <net/compat.h>

diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c index a2cae543a285a..b1106d4507fde 100644 --- a/net/ipv4/netfilter/arp_tables.c +++ b/net/ipv4/netfilter/arp_tables.c @@ -202,7 +202,7 @@ unsigned int arpt_do_table(struct sk_buff *skb,

local_bh_disable(); addend = xt_write_recseq_begin(); - private = rcu_access_pointer(table->private); + private = READ_ONCE(table->private); /* Address dependency. */ cpu = smp_processor_id(); table_base = private->entries; jumpstack = (struct arpt_entry **)private->jumpstack[cpu]; @@ -648,7 +648,7 @@ static struct xt_counters *alloc_counters(const struct xt_table *table) { unsigned int countersize; struct xt_counters *counters; - const struct xt_table_info *private = xt_table_get_private_protected(table); + const struct xt_table_info *private = table->private;

/* We need atomic snapshot of counters: rest doesn't change * (other than comefrom, which userspace doesn't care @@ -672,7 +672,7 @@ static int copy_entries_to_user(unsigned int total_size, unsigned int off, num; const struct arpt_entry *e; struct xt_counters *counters; - struct xt_table_info *private = xt_table_get_private_protected(table); + struct xt_table_info *private = table->private; int ret = 0; void *loc_cpu_entry;

@@ -807,7 +807,7 @@ static int get_info(struct net *net, void __user *user, t = xt_request_find_table_lock(net, NFPROTO_ARP, name); if (!IS_ERR(t)) { struct arpt_getinfo info; - const struct xt_table_info *private = xt_table_get_private_protected(t); + const struct xt_table_info *private = t->private; #ifdef CONFIG_COMPAT struct xt_table_info tmp;

@@ -860,7 +860,7 @@ static int get_entries(struct net *net, struct arpt_get_entries __user *uptr,

t = xt_find_table_lock(net, NFPROTO_ARP, get.name); if (!IS_ERR(t)) { - const struct xt_table_info *private = xt_table_get_private_protected(t); + const struct xt_table_info *private = t->private;

if (get.size == private->size) ret = copy_entries_to_user(private->size, @@ -1019,7 +1019,7 @@ static int do_add_counters(struct net *net, const void __user *user, }

local_bh_disable(); - private = xt_table_get_private_protected(t); + private = t->private; if (private->number != tmp.num_counters) { ret = -EINVAL; goto unlock_up_free; @@ -1356,7 +1356,7 @@ static int compat_copy_entries_to_user(unsigned int total_size, void __user *userptr) { struct xt_counters *counters; - const struct xt_table_info *private = xt_table_get_private_protected(table); + const struct xt_table_info *private = table->private; void __user *pos; unsigned int size; int ret = 0; diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c index 6672172a7512d..2c1d66bef720d 100644 --- a/net/ipv4/netfilter/ip_tables.c +++ b/net/ipv4/netfilter/ip_tables.c @@ -261,7 +261,7 @@ ipt_do_table(struct sk_buff *skb, WARN_ON(!(table->valid_hooks & (1 << hook))); local_bh_disable(); addend = xt_write_recseq_begin(); - private = rcu_access_pointer(table->private); + private = READ_ONCE(table->private); /* Address dependency. */ cpu = smp_processor_id(); table_base = private->entries; jumpstack = (struct ipt_entry **)private->jumpstack[cpu]; @@ -794,7 +794,7 @@ static struct xt_counters *alloc_counters(const struct xt_table *table) { unsigned int countersize; struct xt_counters *counters; - const struct xt_table_info *private = xt_table_get_private_protected(table); + const struct xt_table_info *private = table->private;

/* We need atomic snapshot of counters: rest doesn't change (other than comefrom, which userspace doesn't care @@ -818,7 +818,7 @@ copy_entries_to_user(unsigned int total_size, unsigned int off, num; const struct ipt_entry *e; struct xt_counters *counters; - const struct xt_table_info *private = xt_table_get_private_protected(table); + const struct xt_table_info *private = table->private; int ret = 0; const void *loc_cpu_entry;

@@ -968,7 +968,7 @@ static int get_info(struct net *net, void __user *user, t = xt_request_find_table_lock(net, AF_INET, name); if (!IS_ERR(t)) { struct ipt_getinfo info; - const struct xt_table_info *private = xt_table_get_private_protected(t); + const struct xt_table_info *private = t->private; #ifdef CONFIG_COMPAT struct xt_table_info tmp;

@@ -1022,7 +1022,7 @@ get_entries(struct net *net, struct ipt_get_entries __user *uptr,

t = xt_find_table_lock(net, AF_INET, get.name); if (!IS_ERR(t)) { - const struct xt_table_info *private = xt_table_get_private_protected(t); + const struct xt_table_info *private = t->private; if (get.size == private->size) ret = copy_entries_to_user(private->size, t, uptr->entrytable); @@ -1178,7 +1178,7 @@ do_add_counters(struct net *net, const void __user *user, }

local_bh_disable(); - private = xt_table_get_private_protected(t); + private = t->private; if (private->number != tmp.num_counters) { ret = -EINVAL; goto unlock_up_free; @@ -1573,7 +1573,7 @@ compat_copy_entries_to_user(unsigned int total_size, struct xt_table *table, void __user *userptr) { struct xt_counters *counters; - const struct xt_table_info *private = xt_table_get_private_protected(table); + const struct xt_table_info *private = table->private; void __user *pos; unsigned int size; int ret = 0; diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c index 3b067d5a62ee0..19eb40355dd1d 100644 --- a/net/ipv6/netfilter/ip6_tables.c +++ b/net/ipv6/netfilter/ip6_tables.c @@ -283,7 +283,7 @@ ip6t_do_table(struct sk_buff *skb,

local_bh_disable(); addend = xt_write_recseq_begin(); - private = rcu_access_pointer(table->private); + private = READ_ONCE(table->private); /* Address dependency. */ cpu = smp_processor_id(); table_base = private->entries; jumpstack = (struct ip6t_entry **)private->jumpstack[cpu]; @@ -810,7 +810,7 @@ static struct xt_counters *alloc_counters(const struct xt_table *table) { unsigned int countersize; struct xt_counters *counters; - const struct xt_table_info *private = xt_table_get_private_protected(table); + const struct xt_table_info *private = table->private;

/* We need atomic snapshot of counters: rest doesn't change (other than comefrom, which userspace doesn't care @@ -834,7 +834,7 @@ copy_entries_to_user(unsigned int total_size, unsigned int off, num; const struct ip6t_entry *e; struct xt_counters *counters; - const struct xt_table_info *private = xt_table_get_private_protected(table); + const struct xt_table_info *private = table->private; int ret = 0; const void *loc_cpu_entry;

@@ -984,7 +984,7 @@ static int get_info(struct net *net, void __user *user, t = xt_request_find_table_lock(net, AF_INET6, name); if (!IS_ERR(t)) { struct ip6t_getinfo info; - const struct xt_table_info *private = xt_table_get_private_protected(t); + const struct xt_table_info *private = t->private; #ifdef CONFIG_COMPAT struct xt_table_info tmp;

@@ -1039,7 +1039,7 @@ get_entries(struct net *net, struct ip6t_get_entries __user *uptr,

t = xt_find_table_lock(net, AF_INET6, get.name); if (!IS_ERR(t)) { - struct xt_table_info *private = xt_table_get_private_protected(t); + struct xt_table_info *private = t->private; if (get.size == private->size) ret = copy_entries_to_user(private->size, t, uptr->entrytable); @@ -1194,7 +1194,7 @@ do_add_counters(struct net *net, const void __user *user, unsigned int len, }

local_bh_disable(); - private = xt_table_get_private_protected(t); + private = t->private; if (private->number != tmp.num_counters) { ret = -EINVAL; goto unlock_up_free; @@ -1582,7 +1582,7 @@ compat_copy_entries_to_user(unsigned int total_size, struct xt_table *table, void __user *userptr) { struct xt_counters *counters; - const struct xt_table_info *private = xt_table_get_private_protected(table); + const struct xt_table_info *private = table->private; void __user *pos; unsigned int size; int ret = 0; diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index 1314de5f317f0..8b83806f4f8c4 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -1356,14 +1356,6 @@ struct xt_counters *xt_counters_alloc(unsigned int counters) } EXPORT_SYMBOL(xt_counters_alloc);

-struct xt_table_info -*xt_table_get_private_protected(const struct xt_table *table) -{ - return rcu_dereference_protected(table->private, - mutex_is_locked(&xt[table->af].mutex)); -} -EXPORT_SYMBOL(xt_table_get_private_protected); - struct xt_table_info * xt_replace_table(struct xt_table *table, unsigned int num_counters, @@ -1371,6 +1363,7 @@ xt_replace_table(struct xt_table *table, int *error) { struct xt_table_info *private; + unsigned int cpu; int ret;

ret = xt_jumpstack_alloc(newinfo); @@ -1380,20 +1373,47 @@ xt_replace_table(struct xt_table *table, }

/* Do the substitution. */ - private = xt_table_get_private_protected(table); + local_bh_disable(); + private = table->private;

/* Check inside lock: is the old number correct? */ if (num_counters != private->number) { pr_debug("num_counters != table->private->number (%u/%u)\n", num_counters, private->number); + local_bh_enable(); *error = -EAGAIN; return NULL; }

newinfo->initial_entries = private->initial_entries; + /* + * Ensure contents of newinfo are visible before assigning to + * private. + */ + smp_wmb(); + table->private = newinfo; + + /* make sure all cpus see new ->private value */ + smp_wmb();

- rcu_assign_pointer(table->private, newinfo); - synchronize_rcu(); + /* + * Even though table entries have now been swapped, other CPU's + * may still be using the old entries... + */ + local_bh_enable(); + + /* ... so wait for even xt_recseq on all cpus */ + for_each_possible_cpu(cpu) { + seqcount_t *s = &per_cpu(xt_recseq, cpu); + u32 seq = raw_read_seqcount(s); + + if (seq & 1) { + do { + cond_resched(); + cpu_relax(); + } while (seq == raw_read_seqcount(s)); + } + }

#ifdef CONFIG_AUDIT if (audit_enabled) { @@ -1434,12 +1454,12 @@ struct xt_table *xt_register_table(struct net *net, }

/* Simplifies replace_table code. */ - rcu_assign_pointer(table->private, bootstrap); + table->private = bootstrap;

if (!xt_replace_table(table, 0, newinfo, &ret)) goto unlock;

- private = xt_table_get_private_protected(table); + private = table->private; pr_debug("table->private->number = %u\n", private->number);

/* save number of initial entries */ @@ -1462,8 +1482,7 @@ void *xt_unregister_table(struct xt_table *table) struct xt_table_info *private;

mutex_lock(&xt[table->af].mutex); - private = xt_table_get_private_protected(table); - RCU_INIT_POINTER(table->private, NULL); + private = table->private; list_del(&table->list); mutex_unlock(&xt[table->af].mutex); kfree(table);

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

[ Upstream commit abe7034b9a8d57737e80cc16d60ed3666990bdbf ]

This reverts commit 443d6e86f821a165fae3fc3fc13086d27ac140b1.

This (and the following) patch basically re-implemented the RCU mechanisms of patch 784544739a25. That patch was replaced because of the performance problems that it created when replacing tables. Now, we have the same issue: the call to synchronize_rcu() makes replacing tables slower by as much as an order of magnitude.

Revert these patches and fix the issue in a different way.

Signed-off-by: Mark Tomlinson mark.tomlinson@alliedtelesis.co.nz Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- net/ipv4/netfilter/arp_tables.c | 2 +- net/ipv4/netfilter/ip_tables.c | 2 +- net/ipv6/netfilter/ip6_tables.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c index b1106d4507fde..10d8f95eb7712 100644 --- a/net/ipv4/netfilter/arp_tables.c +++ b/net/ipv4/netfilter/arp_tables.c @@ -1405,7 +1405,7 @@ static int compat_get_entries(struct net *net, xt_compat_lock(NFPROTO_ARP); t = xt_find_table_lock(net, NFPROTO_ARP, get.name); if (!IS_ERR(t)) { - const struct xt_table_info *private = xt_table_get_private_protected(t); + const struct xt_table_info *private = t->private; struct xt_table_info info;

ret = compat_table_info(private, &info); diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c index 2c1d66bef720d..e77872c93c206 100644 --- a/net/ipv4/netfilter/ip_tables.c +++ b/net/ipv4/netfilter/ip_tables.c @@ -1619,7 +1619,7 @@ compat_get_entries(struct net *net, struct compat_ipt_get_entries __user *uptr, xt_compat_lock(AF_INET); t = xt_find_table_lock(net, AF_INET, get.name); if (!IS_ERR(t)) { - const struct xt_table_info *private = xt_table_get_private_protected(t); + const struct xt_table_info *private = t->private; struct xt_table_info info; ret = compat_table_info(private, &info); if (!ret && get.size == info.size) diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c index 19eb40355dd1d..daf2e9e9193d1 100644 --- a/net/ipv6/netfilter/ip6_tables.c +++ b/net/ipv6/netfilter/ip6_tables.c @@ -1628,7 +1628,7 @@ compat_get_entries(struct net *net, struct compat_ip6t_get_entries __user *uptr, xt_compat_lock(AF_INET6); t = xt_find_table_lock(net, AF_INET6, get.name); if (!IS_ERR(t)) { - const struct xt_table_info *private = xt_table_get_private_protected(t); + const struct xt_table_info *private = t->private; struct xt_table_info info; ret = compat_table_info(private, &info); if (!ret && get.size == info.size)

From: Andy Shevchenko andriy.shevchenko@linux.intel.com

[ Upstream commit eb50aaf960e3bedfef79063411ffd670da94b84b ]

The decrementation of acpi_device_bus_id->instance_no in acpi_device_del() is incorrect, because it may cause a duplicate instance number to be allocated next time a device with the same acpi_device_bus_id is added.

Replace above mentioned approach by using IDA framework.

While at it, define the instance range to be [0, 4096).

Fixes: e49bd2dd5a50 ("ACPI: use PNPID:instance_no as bus_id of ACPI device") Fixes: ca9dc8d42b30 ("ACPI / scan: Fix acpi_bus_id_list bookkeeping") Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Cc: 4.10+ stable@vger.kernel.org # 4.10+ Signed-off-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/acpi/internal.h | 6 +++++- drivers/acpi/scan.c | 33 ++++++++++++++++++++++++++++----- include/acpi/acpi_bus.h | 1 + 3 files changed, 34 insertions(+), 6 deletions(-)

diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 6def196cc23cf..913613cf5c53f 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -18,6 +18,8 @@ #ifndef _ACPI_INTERNAL_H_ #define _ACPI_INTERNAL_H_

+#include <linux/idr.h> + #define PREFIX "ACPI: "

int early_acpi_osi_init(void); @@ -97,9 +99,11 @@ void acpi_scan_table_handler(u32 event, void *table, void *context);

extern struct list_head acpi_bus_id_list;

+#define ACPI_MAX_DEVICE_INSTANCES 4096 + struct acpi_device_bus_id { const char *bus_id; - unsigned int instance_no; + struct ida instance_ida; struct list_head node; };

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 712599019892e..d3c551bdc2dac 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -482,9 +482,8 @@ static void acpi_device_del(struct acpi_device *device) list_for_each_entry(acpi_device_bus_id, &acpi_bus_id_list, node) if (!strcmp(acpi_device_bus_id->bus_id, acpi_device_hid(device))) { - if (acpi_device_bus_id->instance_no > 0) - acpi_device_bus_id->instance_no--; - else { + ida_simple_remove(&acpi_device_bus_id->instance_ida, device->pnp.instance_no); + if (ida_is_empty(&acpi_device_bus_id->instance_ida)) { list_del(&acpi_device_bus_id->node); kfree_const(acpi_device_bus_id->bus_id); kfree(acpi_device_bus_id); @@ -635,6 +634,21 @@ static struct acpi_device_bus_id *acpi_device_bus_id_match(const char *dev_id) return NULL; }

+static int acpi_device_set_name(struct acpi_device *device, + struct acpi_device_bus_id *acpi_device_bus_id) +{ + struct ida *instance_ida = &acpi_device_bus_id->instance_ida; + int result; + + result = ida_simple_get(instance_ida, 0, ACPI_MAX_DEVICE_INSTANCES, GFP_KERNEL); + if (result < 0) + return result; + + device->pnp.instance_no = result; + dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, result); + return 0; +} + int acpi_device_add(struct acpi_device *device, void (*release)(struct device *)) { @@ -669,7 +683,9 @@ int acpi_device_add(struct acpi_device *device,

acpi_device_bus_id = acpi_device_bus_id_match(acpi_device_hid(device)); if (acpi_device_bus_id) { - acpi_device_bus_id->instance_no++; + result = acpi_device_set_name(device, acpi_device_bus_id); + if (result) + goto err_unlock; } else { acpi_device_bus_id = kzalloc(sizeof(*acpi_device_bus_id), GFP_KERNEL); @@ -685,9 +701,16 @@ int acpi_device_add(struct acpi_device *device, goto err_unlock; }

+ ida_init(&acpi_device_bus_id->instance_ida); + + result = acpi_device_set_name(device, acpi_device_bus_id); + if (result) { + kfree(acpi_device_bus_id); + goto err_unlock; + } + list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list); } - dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no);

if (device->parent) list_add_tail(&device->node, &device->parent->children); diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index d9773df60a360..8b19618bad0a0 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -248,6 +248,7 @@ struct acpi_pnp_type {

struct acpi_device_pnp { acpi_bus_id bus_id; /* Object name */ + int instance_no; /* Instance number of this object */ struct acpi_pnp_type type; /* ID type */ acpi_bus_address bus_address; /* _ADR */ char *unique_id; /* _UID */

From: Adrian Hunter adrian.hunter@intel.com

[ Upstream commit b410ed2a8572d41c68bd9208555610e4b07d0703 ]

The only requirement of an auxtrace queue is that the buffers are in time order. That is achieved by making separate queues for separate perf buffer or AUX area buffer mmaps.

That generally means a separate queue per cpu for per-cpu contexts, and a separate queue per thread for per-task contexts.

When buffers are added to a queue, perf checks that the buffer cpu and thread id (tid) match the queue cpu and thread id.

However, generally, that need not be true, and perf will queue buffers correctly anyway, so the check is not needed.

In addition, the check gets erroneously hit when using sample mode to trace multiple threads.

Consequently, fix that case by removing the check.

Fixes: e502789302a6 ("perf auxtrace: Add helpers for queuing AUX area tracing data") Reported-by: Andi Kleen ak@linux.intel.com Signed-off-by: Adrian Hunter adrian.hunter@intel.com Reviewed-by: Andi Kleen ak@linux.intel.com Cc: Jiri Olsa jolsa@redhat.com Link: http://lore.kernel.org/lkml/20210308151143.18338-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- tools/perf/util/auxtrace.c | 4 ---- 1 file changed, 4 deletions(-)

diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index aa6dff2083d66..4e401119514d1 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -256,10 +256,6 @@ static int auxtrace_queues__queue_buffer(struct auxtrace_queues *queues, queue->set = true; queue->tid = buffer->tid; queue->cpu = buffer->cpu; - } else if (buffer->cpu != queue->cpu || buffer->tid != queue->tid) { - pr_err("auxtrace queue conflict: cpu %d, tid %d vs cpu %d, tid %d\n", - queue->cpu, queue->tid, buffer->cpu, buffer->tid); - return -EINVAL; }

buffer->buffer_nr = queues->next_buffer_nr++;

From: Jia-Ju Bai baijiaju1990@gmail.com

[ Upstream commit 3401ecf7fc1b9458a19d42c0e26a228f18ac7dda ]

When kzalloc() returns NULL, no error return code of mpt3sas_base_attach() is assigned. To fix this bug, r is assigned with -ENOMEM in this case.

Link: https://lore.kernel.org/r/20210308035241.3288-1-baijiaju1990@gmail.com Fixes: c696f7b83ede ("scsi: mpt3sas: Implement device_remove_in_progress check in IOCTL path") Reported-by: TOTE Robot oslab@tsinghua.edu.cn Signed-off-by: Jia-Ju Bai baijiaju1990@gmail.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/scsi/mpt3sas/mpt3sas_base.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c index 07959047d4dc4..447ac667f4b2b 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_base.c +++ b/drivers/scsi/mpt3sas/mpt3sas_base.c @@ -6629,14 +6629,18 @@ mpt3sas_base_attach(struct MPT3SAS_ADAPTER *ioc) ioc->pend_os_device_add_sz++; ioc->pend_os_device_add = kzalloc(ioc->pend_os_device_add_sz, GFP_KERNEL); - if (!ioc->pend_os_device_add) + if (!ioc->pend_os_device_add) { + r = -ENOMEM; goto out_free_resources; + }

ioc->device_remove_in_progress_sz = ioc->pend_os_device_add_sz; ioc->device_remove_in_progress = kzalloc(ioc->device_remove_in_progress_sz, GFP_KERNEL); - if (!ioc->device_remove_in_progress) + if (!ioc->device_remove_in_progress) { + r = -ENOMEM; goto out_free_resources; + }

ioc->fwfault_debug = mpt3sas_fwfault_debug;

From: Isaku Yamahata isaku.yamahata@intel.com

commit 8249d17d3194eac064a8ca5bc5ca0abc86feecde upstream.

The pfn variable contains the page frame number as returned by the pXX_pfn() functions, shifted to the right by PAGE_SHIFT to remove the page bits. After page protection computations are done to it, it gets shifted back to the physical address using page_level_shift().

That is wrong, of course, because that function determines the shift length based on the level of the page in the page table but in all the cases, it was shifted by PAGE_SHIFT before.

Therefore, shift it back using PAGE_SHIFT to get the correct physical address.

[ bp: Rewrite commit message. ]

Fixes: dfaaec9033b8 ("x86: Add support for changing memory encryption attribute in early boot") Signed-off-by: Isaku Yamahata isaku.yamahata@intel.com Signed-off-by: Borislav Petkov bp@suse.de Reviewed-by: Kirill A. Shutemov kirill.shutemov@linux.intel.com Reviewed-by: Tom Lendacky thomas.lendacky@amd.com Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/81abbae1657053eccc535c16151f63cd049dcb97.161609829... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- arch/x86/mm/mem_encrypt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c index 006f373f54aba..c0499c38962ba 100644 --- a/arch/x86/mm/mem_encrypt.c +++ b/arch/x86/mm/mem_encrypt.c @@ -228,7 +228,7 @@ static void __init __set_clr_pte_enc(pte_t *kpte, int level, bool enc) if (pgprot_val(old_prot) == pgprot_val(new_prot)) return;

- pa = pfn << page_level_shift(level); + pa = pfn << PAGE_SHIFT; size = page_level_size(level);

/*

From: Eric Dumazet edumazet@google.com

commit e323d865b36134e8c5c82c834df89109a5c60dab upstream.

iproute2 package is well behaved, but malicious user space can provide illegal shift values and trigger UBSAN reports.

Add stab parameter to red_check_params() to validate user input.

syzbot reported:

UBSAN: shift-out-of-bounds in ./include/net/red.h:312:18 shift exponent 111 is too large for 64-bit type 'long unsigned int' CPU: 1 PID: 14662 Comm: syz-executor.3 Not tainted 5.12.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:327 red_calc_qavg_from_idle_time include/net/red.h:312 [inline] red_calc_qavg include/net/red.h:353 [inline] choke_enqueue.cold+0x18/0x3dd net/sched/sch_choke.c:221 __dev_xmit_skb net/core/dev.c:3837 [inline] __dev_queue_xmit+0x1943/0x2e00 net/core/dev.c:4150 neigh_hh_output include/net/neighbour.h:499 [inline] neigh_output include/net/neighbour.h:508 [inline] ip6_finish_output2+0x911/0x1700 net/ipv6/ip6_output.c:117 __ip6_finish_output net/ipv6/ip6_output.c:182 [inline] __ip6_finish_output+0x4c1/0xe10 net/ipv6/ip6_output.c:161 ip6_finish_output+0x35/0x200 net/ipv6/ip6_output.c:192 NF_HOOK_COND include/linux/netfilter.h:290 [inline] ip6_output+0x1e4/0x530 net/ipv6/ip6_output.c:215 dst_output include/net/dst.h:448 [inline] NF_HOOK include/linux/netfilter.h:301 [inline] NF_HOOK include/linux/netfilter.h:295 [inline] ip6_xmit+0x127e/0x1eb0 net/ipv6/ip6_output.c:320 inet6_csk_xmit+0x358/0x630 net/ipv6/inet6_connection_sock.c:135 dccp_transmit_skb+0x973/0x12c0 net/dccp/output.c:138 dccp_send_reset+0x21b/0x2b0 net/dccp/output.c:535 dccp_finish_passive_close net/dccp/proto.c:123 [inline] dccp_finish_passive_close+0xed/0x140 net/dccp/proto.c:118 dccp_terminate_connection net/dccp/proto.c:958 [inline] dccp_close+0xb3c/0xe60 net/dccp/proto.c:1028 inet_release+0x12e/0x280 net/ipv4/af_inet.c:431 inet6_release+0x4c/0x70 net/ipv6/af_inet6.c:478 __sock_release+0xcd/0x280 net/socket.c:599 sock_close+0x18/0x20 net/socket.c:1258 __fput+0x288/0x920 fs/file_table.c:280 task_work_run+0xdd/0x1a0 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline]

Fixes: 8afa10cbe281 ("net_sched: red: Avoid illegal values") Signed-off-by: Eric Dumazet edumazet@google.com Reported-by: syzbot syzkaller@googlegroups.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- include/net/red.h | 10 +++++++++- net/sched/sch_choke.c | 7 ++++--- net/sched/sch_gred.c | 2 +- net/sched/sch_red.c | 7 +++++-- net/sched/sch_sfq.c | 2 +- 5 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/include/net/red.h b/include/net/red.h index e21e7fd4fe077..8fe55b8b2fb81 100644 --- a/include/net/red.h +++ b/include/net/red.h @@ -168,7 +168,8 @@ static inline void red_set_vars(struct red_vars *v) v->qcount = -1; }

-static inline bool red_check_params(u32 qth_min, u32 qth_max, u8 Wlog, u8 Scell_log) +static inline bool red_check_params(u32 qth_min, u32 qth_max, u8 Wlog, + u8 Scell_log, u8 *stab) { if (fls(qth_min) + Wlog > 32) return false; @@ -178,6 +179,13 @@ static inline bool red_check_params(u32 qth_min, u32 qth_max, u8 Wlog, u8 Scell_ return false; if (qth_max < qth_min) return false; + if (stab) { + int i; + + for (i = 0; i < RED_STAB_SIZE; i++) + if (stab[i] >= 32) + return false; + } return true; }

diff --git a/net/sched/sch_choke.c b/net/sched/sch_choke.c index d058397d284bf..8b72aed77ed4f 100644 --- a/net/sched/sch_choke.c +++ b/net/sched/sch_choke.c @@ -355,6 +355,7 @@ static int choke_change(struct Qdisc *sch, struct nlattr *opt, struct sk_buff **old = NULL; unsigned int mask; u32 max_P; + u8 *stab;

if (opt == NULL) return -EINVAL; @@ -370,8 +371,8 @@ static int choke_change(struct Qdisc *sch, struct nlattr *opt, max_P = tb[TCA_CHOKE_MAX_P] ? nla_get_u32(tb[TCA_CHOKE_MAX_P]) : 0;

ctl = nla_data(tb[TCA_CHOKE_PARMS]); - - if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog, ctl->Scell_log)) + stab = nla_data(tb[TCA_CHOKE_STAB]); + if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog, ctl->Scell_log, stab)) return -EINVAL;

if (ctl->limit > CHOKE_MAX_QUEUE) @@ -421,7 +422,7 @@ static int choke_change(struct Qdisc *sch, struct nlattr *opt,

red_set_parms(&q->parms, ctl->qth_min, ctl->qth_max, ctl->Wlog, ctl->Plog, ctl->Scell_log, - nla_data(tb[TCA_CHOKE_STAB]), + stab, max_P); red_set_vars(&q->vars);

diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c index 6f94bca75520b..db7a91a29b59c 100644 --- a/net/sched/sch_gred.c +++ b/net/sched/sch_gred.c @@ -357,7 +357,7 @@ static inline int gred_change_vq(struct Qdisc *sch, int dp, struct gred_sched *table = qdisc_priv(sch); struct gred_sched_data *q = table->tab[dp];

- if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog, ctl->Scell_log)) + if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog, ctl->Scell_log, stab)) return -EINVAL;

if (!q) { diff --git a/net/sched/sch_red.c b/net/sched/sch_red.c index a3dc2118539b9..e42f890fa1478 100644 --- a/net/sched/sch_red.c +++ b/net/sched/sch_red.c @@ -199,6 +199,7 @@ static int red_change(struct Qdisc *sch, struct nlattr *opt, struct Qdisc *child = NULL; int err; u32 max_P; + u8 *stab;

if (opt == NULL) return -EINVAL; @@ -214,7 +215,9 @@ static int red_change(struct Qdisc *sch, struct nlattr *opt, max_P = tb[TCA_RED_MAX_P] ? nla_get_u32(tb[TCA_RED_MAX_P]) : 0;

ctl = nla_data(tb[TCA_RED_PARMS]); - if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog, ctl->Scell_log)) + stab = nla_data(tb[TCA_RED_STAB]); + if (!red_check_params(ctl->qth_min, ctl->qth_max, ctl->Wlog, + ctl->Scell_log, stab)) return -EINVAL;

if (ctl->limit > 0) { @@ -240,7 +243,7 @@ static int red_change(struct Qdisc *sch, struct nlattr *opt, red_set_parms(&q->parms, ctl->qth_min, ctl->qth_max, ctl->Wlog, ctl->Plog, ctl->Scell_log, - nla_data(tb[TCA_RED_STAB]), + stab, max_P); red_set_vars(&q->vars);

diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c index 74f697c4a4d30..1bfdf90fa0cce 100644 --- a/net/sched/sch_sfq.c +++ b/net/sched/sch_sfq.c @@ -651,7 +651,7 @@ static int sfq_change(struct Qdisc *sch, struct nlattr *opt) }

if (ctl_v1 && !red_check_params(ctl_v1->qth_min, ctl_v1->qth_max, - ctl_v1->Wlog, ctl_v1->Scell_log)) + ctl_v1->Wlog, ctl_v1->Scell_log, NULL)) return -EINVAL; if (ctl_v1 && ctl_v1->qth_min) { p = kmalloc(sizeof(*p), GFP_KERNEL);

From: Markus Theil markus.theil@tu-ilmenau.de

commit 3bd801b14e0c5d29eeddc7336558beb3344efaa3 upstream.

Clear beacon ie pointer and ie length after free in order to prevent double free.

================================================================== BUG: KASAN: double-free or invalid-free \ in ieee80211_ibss_leave+0x83/0xe0 net/mac80211/ibss.c:1876

CPU: 0 PID: 8472 Comm: syz-executor100 Not tainted 5.11.0-rc6-syzkaller #0 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:120 print_address_description.constprop.0.cold+0x5b/0x2c6 mm/kasan/report.c:230 kasan_report_invalid_free+0x51/0x80 mm/kasan/report.c:355 ____kasan_slab_free+0xcc/0xe0 mm/kasan/common.c:341 kasan_slab_free include/linux/kasan.h:192 [inline] __cache_free mm/slab.c:3424 [inline] kfree+0xed/0x270 mm/slab.c:3760 ieee80211_ibss_leave+0x83/0xe0 net/mac80211/ibss.c:1876 rdev_leave_ibss net/wireless/rdev-ops.h:545 [inline] __cfg80211_leave_ibss+0x19a/0x4c0 net/wireless/ibss.c:212 __cfg80211_leave+0x327/0x430 net/wireless/core.c:1172 cfg80211_leave net/wireless/core.c:1221 [inline] cfg80211_netdev_notifier_call+0x9e8/0x12c0 net/wireless/core.c:1335 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2040 call_netdevice_notifiers_extack net/core/dev.c:2052 [inline] call_netdevice_notifiers net/core/dev.c:2066 [inline] __dev_close_many+0xee/0x2e0 net/core/dev.c:1586 __dev_close net/core/dev.c:1624 [inline] __dev_change_flags+0x2cb/0x730 net/core/dev.c:8476 dev_change_flags+0x8a/0x160 net/core/dev.c:8549 dev_ifsioc+0x210/0xa70 net/core/dev_ioctl.c:265 dev_ioctl+0x1b1/0xc40 net/core/dev_ioctl.c:511 sock_do_ioctl+0x148/0x2d0 net/socket.c:1060 sock_ioctl+0x477/0x6a0 net/socket.c:1177 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported-by: syzbot+93976391bf299d425f44@syzkaller.appspotmail.com Signed-off-by: Markus Theil markus.theil@tu-ilmenau.de Link: https://lore.kernel.org/r/20210213133653.367130-1-markus.theil@tu-ilmenau.de Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- net/mac80211/ibss.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index f0f5fedb8caac..fa13eef25f2c9 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -1861,6 +1861,8 @@ int ieee80211_ibss_leave(struct ieee80211_sub_if_data *sdata)

/* remove beacon */ kfree(sdata->u.ibss.ie); + sdata->u.ibss.ie = NULL; + sdata->u.ibss.ie_len = 0;

/* on the next join, re-program HT parameters */ memset(&ifibss->ht_capa, 0, sizeof(ifibss->ht_capa));

From: Marc Kleine-Budde mkl@pengutronix.de

commit 5d7047ed6b7214fbabc16d8712a822e256b1aa44 upstream.

In commit 6417f03132a6 ("module: remove never implemented MODULE_SUPPORTED_DEVICE") the MODULE_SUPPORTED_DEVICE macro was removed from the kerne entirely. Shortly before this patch was applied mainline the commit 59ec7b89ed3e ("can: peak_usb: add forgotten supported devices") was added to net/master. As this would result in a merge conflict, let's revert this patch.

Fixes: 59ec7b89ed3e ("can: peak_usb: add forgotten supported devices") Link: https://lore.kernel.org/r/20210320192649.341832-1-mkl@pengutronix.de Suggested-by: Leon Romanovsky leon@kernel.org Cc: Stephane Grosjean s.grosjean@peak-system.com Signed-off-by: Marc Kleine-Budde mkl@pengutronix.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/net/can/usb/peak_usb/pcan_usb_fd.c | 2 -- 1 file changed, 2 deletions(-)

diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c index 1649687ab9241..40ac37fe9dcde 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c +++ b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c @@ -26,8 +26,6 @@

MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB FD adapter"); MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB Pro FD adapter"); -MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-Chip USB"); -MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB X6 adapter");

#define PCAN_USBPROFD_CHANNEL_COUNT 2 #define PCAN_USBFD_CHANNEL_COUNT 1

From: Greg Kroah-Hartman gregkh@linuxfoundation.org

Merge 74 patches from 4.19.184 stable branch (74 total) beside 0 already merged patches.

Tested-by: Guenter Roeck linux@roeck-us.net Tested-by: Jason Self jason@bluehome.net Tested-by: Shuah Khan skhan@linuxfoundation.org Tested-by: Linux Kernel Functional Testing lkft@linaro.org Tested-by: Jon Hunter jonathanh@nvidia.com Link: https://lore.kernel.org/r/20210329075610.300795746@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile index 8e6bc1cf13f78..8968251a17507 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 VERSION = 4 PATCHLEVEL = 19 -SUBLEVEL = 183 +SUBLEVEL = 184 EXTRAVERSION = NAME = "People's Front"