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[PATCH OLK-6.6] scsi: qla2xxx: Free sp in error path to fix system crash
by Zheng Qixing 02 Mar '26

02 Mar '26

From: Anil Gurumurthy <agurumurthy(a)marvell.com> stable inclusion from stable-v6.6.125 commit aed16d37696f494288a291b4b477484ed0be774b category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13785 CVE: CVE-2025-71232 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ------------------ commit 7adbd2b7809066c75f0433e5e2a8e114b429f30f upstream. System crash seen during load/unload test in a loop, [61110.449331] qla2xxx [0000:27:00.0]-0042:0: Disabled MSI-X. [61110.467494] ============================================================================= [61110.467498] BUG qla2xxx_srbs (Tainted: G OE -------- --- ): Objects remaining in qla2xxx_srbs on __kmem_cache_shutdown() [61110.467501] ----------------------------------------------------------------------------- [61110.467502] Slab 0x000000000ffc8162 objects=51 used=1 fp=0x00000000e25d3d85 flags=0x57ffffc0010200(slab|head|node=1|zone=2|lastcpupid=0x1fffff) [61110.467509] CPU: 53 PID: 455206 Comm: rmmod Kdump: loaded Tainted: G OE -------- --- 5.14.0-284.11.1.el9_2.x86_64 #1 [61110.467513] Hardware name: HPE ProLiant DL385 Gen10 Plus v2/ProLiant DL385 Gen10 Plus v2, BIOS A42 08/17/2023 [61110.467515] Call Trace: [61110.467516] <TASK> [61110.467519] dump_stack_lvl+0x34/0x48 [61110.467526] slab_err.cold+0x53/0x67 [61110.467534] __kmem_cache_shutdown+0x16e/0x320 [61110.467540] kmem_cache_destroy+0x51/0x160 [61110.467544] qla2x00_module_exit+0x93/0x99 [qla2xxx] [61110.467607] ? __do_sys_delete_module.constprop.0+0x178/0x280 [61110.467613] ? syscall_trace_enter.constprop.0+0x145/0x1d0 [61110.467616] ? do_syscall_64+0x5c/0x90 [61110.467619] ? exc_page_fault+0x62/0x150 [61110.467622] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [61110.467626] </TASK> [61110.467627] Disabling lock debugging due to kernel taint [61110.467635] Object 0x0000000026f7e6e6 @offset=16000 [61110.467639] ------------[ cut here ]------------ [61110.467639] kmem_cache_destroy qla2xxx_srbs: Slab cache still has objects when called from qla2x00_module_exit+0x93/0x99 [qla2xxx] [61110.467659] WARNING: CPU: 53 PID: 455206 at mm/slab_common.c:520 kmem_cache_destroy+0x14d/0x160 [61110.467718] CPU: 53 PID: 455206 Comm: rmmod Kdump: loaded Tainted: G B OE -------- --- 5.14.0-284.11.1.el9_2.x86_64 #1 [61110.467720] Hardware name: HPE ProLiant DL385 Gen10 Plus v2/ProLiant DL385 Gen10 Plus v2, BIOS A42 08/17/2023 [61110.467721] RIP: 0010:kmem_cache_destroy+0x14d/0x160 [61110.467724] Code: 99 7d 07 00 48 89 ef e8 e1 6a 07 00 eb b3 48 8b 55 60 48 8b 4c 24 20 48 c7 c6 70 fc 66 90 48 c7 c7 f8 ef a1 90 e8 e1 ed 7c 00 <0f> 0b eb 93 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 [61110.467725] RSP: 0018:ffffa304e489fe80 EFLAGS: 00010282 [61110.467727] RAX: 0000000000000000 RBX: ffffffffc0d9a860 RCX: 0000000000000027 [61110.467729] RDX: ffff8fd5ff9598a8 RSI: 0000000000000001 RDI: ffff8fd5ff9598a0 [61110.467730] RBP: ffff8fb6aaf78700 R08: 0000000000000000 R09: 0000000100d863b7 [61110.467731] R10: ffffa304e489fd20 R11: ffffffff913bef48 R12: 0000000040002000 [61110.467731] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [61110.467733] FS: 00007f64c89fb740(0000) GS:ffff8fd5ff940000(0000) knlGS:0000000000000000 [61110.467734] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [61110.467735] CR2: 00007f0f02bfe000 CR3: 00000020ad6dc005 CR4: 0000000000770ee0 [61110.467736] PKRU: 55555554 [61110.467737] Call Trace: [61110.467738] <TASK> [61110.467739] qla2x00_module_exit+0x93/0x99 [qla2xxx] [61110.467755] ? __do_sys_delete_module.constprop.0+0x178/0x280 Free sp in the error path to fix the crash. Fixes: f352eeb75419 ("scsi: qla2xxx: Add ability to use GPNFT/GNNFT for RSCN handling") Cc: stable(a)vger.kernel.org Signed-off-by: Anil Gurumurthy <agurumurthy(a)marvell.com> Signed-off-by: Nilesh Javali <njavali(a)marvell.com> Reviewed-by: Himanshu Madhani <hmadhani2024(a)gmail.com> Link: https://patch.msgid.link/20251210101604.431868-9-njavali@marvell.com Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Zheng Qixing <zhengqixing(a)huawei.com> --- drivers/scsi/qla2xxx/qla_gs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c index c09229b7c516..821e22731fed 100644 --- a/drivers/scsi/qla2xxx/qla_gs.c +++ b/drivers/scsi/qla2xxx/qla_gs.c @@ -3625,8 +3625,8 @@ int qla_fab_async_scan(scsi_qla_host_t *vha, srb_t *sp) if (vha->scan.scan_flags & SF_SCANNING) { spin_unlock_irqrestore(&vha->work_lock, flags); ql_dbg(ql_dbg_disc + ql_dbg_verbose, vha, 0x2012, - "%s: scan active\n", __func__); - return rval; + "%s: scan active for sp:%p\n", __func__, sp); + goto done_free_sp; } vha->scan.scan_flags |= SF_SCANNING; if (!sp) -- 2.39.2

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[PATCH OLK-6.6] scsi: qla2xxx: Delay module unload while fabric scan in progress
by Zheng Qixing 02 Mar '26

02 Mar '26

From: Anil Gurumurthy <agurumurthy(a)marvell.com> stable inclusion from stable-v6.6.125 commit 528b2f1027edfb52af0171f0f4b227fb356dde05 category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13782 CVE: CVE-2025-71235 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ------------------ commit 8890bf450e0b6b283f48ac619fca5ac2f14ddd62 upstream. System crash seen during load/unload test in a loop. [105954.384919] RBP: ffff914589838dc0 R08: 0000000000000000 R09: 0000000000000086 [105954.384920] R10: 000000000000000f R11: ffffa31240904be5 R12: ffff914605f868e0 [105954.384921] R13: ffff914605f86910 R14: 0000000000008010 R15: 00000000ddb7c000 [105954.384923] FS: 0000000000000000(0000) GS:ffff9163fec40000(0000) knlGS:0000000000000000 [105954.384925] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [105954.384926] CR2: 000055d31ce1d6a0 CR3: 0000000119f5e001 CR4: 0000000000770ee0 [105954.384928] PKRU: 55555554 [105954.384929] Call Trace: [105954.384931] <IRQ> [105954.384934] qla24xx_sp_unmap+0x1f3/0x2a0 [qla2xxx] [105954.384962] ? qla_async_scan_sp_done+0x114/0x1f0 [qla2xxx] [105954.384980] ? qla24xx_els_ct_entry+0x4de/0x760 [qla2xxx] [105954.384999] ? __wake_up_common+0x80/0x190 [105954.385004] ? qla24xx_process_response_queue+0xc2/0xaa0 [qla2xxx] [105954.385023] ? qla24xx_msix_rsp_q+0x44/0xb0 [qla2xxx] [105954.385040] ? __handle_irq_event_percpu+0x3d/0x190 [105954.385044] ? handle_irq_event+0x58/0xb0 [105954.385046] ? handle_edge_irq+0x93/0x240 [105954.385050] ? __common_interrupt+0x41/0xa0 [105954.385055] ? common_interrupt+0x3e/0xa0 [105954.385060] ? asm_common_interrupt+0x22/0x40 The root cause of this was that there was a free (dma_free_attrs) in the interrupt context. There was a device discovery/fabric scan in progress. A module unload was issued which set the UNLOADING flag. As part of the discovery, after receiving an interrupt a work queue was scheduled (which involved a work to be queued). Since the UNLOADING flag is set, the work item was not allocated and the mapped memory had to be freed. The free occurred in interrupt context leading to system crash. Delay the driver unload until the fabric scan is complete to avoid the crash. Reported-by: kernel test robot <lkp(a)intel.com> Reported-by: Dan Carpenter <dan.carpenter(a)linaro.org> Closes: https://lore.kernel.org/all/202512090414.07Waorz0-lkp@intel.com/ Fixes: 783e0dc4f66a ("qla2xxx: Check for device state before unloading the driver.") Cc: stable(a)vger.kernel.org Signed-off-by: Anil Gurumurthy <agurumurthy(a)marvell.com> Signed-off-by: Nilesh Javali <njavali(a)marvell.com> Reviewed-by: Himanshu Madhani <hmadhani2024(a)gmail.com> Link: https://patch.msgid.link/20251210101604.431868-8-njavali@marvell.com Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Zheng Qixing <zhengqixing(a)huawei.com> --- drivers/scsi/qla2xxx/qla_os.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 7fa7a658ba19..609acc97e887 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -1194,7 +1194,8 @@ qla2x00_wait_for_hba_ready(scsi_qla_host_t *vha) while ((qla2x00_reset_active(vha) || ha->dpc_active || ha->flags.mbox_busy) || test_bit(FX00_RESET_RECOVERY, &vha->dpc_flags) || - test_bit(FX00_TARGET_SCAN, &vha->dpc_flags)) { + test_bit(FX00_TARGET_SCAN, &vha->dpc_flags) || + (vha->scan.scan_flags & SF_SCANNING)) { if (test_bit(UNLOADING, &base_vha->dpc_flags)) break; msleep(1000); -- 2.39.2

2 1

[PATCH OLK-6.6] scsi: qla2xxx: Validate sp before freeing associated memory
by Zheng Qixing 02 Mar '26

02 Mar '26

From: Anil Gurumurthy <agurumurthy(a)marvell.com> stable inclusion from stable-v6.6.125 commit 949010291bb941d53733ed08a33454254d9afb1b category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13781 CVE: CVE-2025-71236 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… ------------------ commit b6df15aec8c3441357d4da0eaf4339eb20f5999f upstream. System crash with the following signature [154563.214890] nvme nvme2: NVME-FC{1}: controller connect complete [154564.169363] qla2xxx [0000:b0:00.1]-3002:2: nvme: Sched: Set ZIO exchange threshold to 3. [154564.169405] qla2xxx [0000:b0:00.1]-ffffff:2: SET ZIO Activity exchange threshold to 5. [154565.539974] qla2xxx [0000:b0:00.1]-5013:2: RSCN database changed – 0078 0080 0000. [154565.545744] qla2xxx [0000:b0:00.1]-5013:2: RSCN database changed – 0078 00a0 0000. [154565.545857] qla2xxx [0000:b0:00.1]-11a2:2: FEC=enabled (data rate). [154565.552760] qla2xxx [0000:b0:00.1]-11a2:2: FEC=enabled (data rate). [154565.553079] BUG: kernel NULL pointer dereference, address: 00000000000000f8 [154565.553080] #PF: supervisor read access in kernel mode [154565.553082] #PF: error_code(0x0000) - not-present page [154565.553084] PGD 80000010488ab067 P4D 80000010488ab067 PUD 104978a067 PMD 0 [154565.553089] Oops: 0000 1 PREEMPT SMP PTI [154565.553092] CPU: 10 PID: 858 Comm: qla2xxx_2_dpc Kdump: loaded Tainted: G OE ------- --- 5.14.0-503.11.1.el9_5.x86_64 #1 [154565.553096] Hardware name: HPE Synergy 660 Gen10/Synergy 660 Gen10 Compute Module, BIOS I43 09/30/2024 [154565.553097] RIP: 0010:qla_fab_async_scan.part.0+0x40b/0x870 [qla2xxx] [154565.553141] Code: 00 00 e8 58 a3 ec d4 49 89 e9 ba 12 20 00 00 4c 89 e6 49 c7 c0 00 ee a8 c0 48 c7 c1 66 c0 a9 c0 bf 00 80 00 10 e8 15 69 00 00 <4c> 8b 8d f8 00 00 00 4d 85 c9 74 35 49 8b 84 24 00 19 00 00 48 8b [154565.553143] RSP: 0018:ffffb4dbc8aebdd0 EFLAGS: 00010286 [154565.553145] RAX: 0000000000000000 RBX: ffff8ec2cf0908d0 RCX: 0000000000000002 [154565.553147] RDX: 0000000000000000 RSI: ffffffffc0a9c896 RDI: ffffb4dbc8aebd47 [154565.553148] RBP: 0000000000000000 R08: ffffb4dbc8aebd45 R09: 0000000000ffff0a [154565.553150] R10: 0000000000000000 R11: 000000000000000f R12: ffff8ec2cf0908d0 [154565.553151] R13: ffff8ec2cf090900 R14: 0000000000000102 R15: ffff8ec2cf084000 [154565.553152] FS: 0000000000000000(0000) GS:ffff8ed27f800000(0000) knlGS:0000000000000000 [154565.553154] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [154565.553155] CR2: 00000000000000f8 CR3: 000000113ae0a005 CR4: 00000000007706f0 [154565.553157] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [154565.553158] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [154565.553159] PKRU: 55555554 [154565.553160] Call Trace: [154565.553162] <TASK> [154565.553165] ? show_trace_log_lvl+0x1c4/0x2df [154565.553172] ? show_trace_log_lvl+0x1c4/0x2df [154565.553177] ? qla_fab_async_scan.part.0+0x40b/0x870 [qla2xxx] [154565.553215] ? __die_body.cold+0x8/0xd [154565.553218] ? page_fault_oops+0x134/0x170 [154565.553223] ? snprintf+0x49/0x70 [154565.553229] ? exc_page_fault+0x62/0x150 [154565.553238] ? asm_exc_page_fault+0x22/0x30 Check for sp being non NULL before freeing any associated memory Fixes: a4239945b8ad ("scsi: qla2xxx: Add switch command to simplify fabric discovery") Cc: stable(a)vger.kernel.org Signed-off-by: Anil Gurumurthy <agurumurthy(a)marvell.com> Signed-off-by: Nilesh Javali <njavali(a)marvell.com> Reviewed-by: Himanshu Madhani <hmadhani2024(a)gmail.com> Link: https://patch.msgid.link/20251210101604.431868-10-njavali@marvell.com Signed-off-by: Martin K. Petersen <martin.petersen(a)oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Zheng Qixing <zhengqixing(a)huawei.com> --- drivers/scsi/qla2xxx/qla_gs.c | 34 ++++++++++++++++++---------------- 1 file changed, 18 insertions(+), 16 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_gs.c b/drivers/scsi/qla2xxx/qla_gs.c index d2bddca7045a..c09229b7c516 100644 --- a/drivers/scsi/qla2xxx/qla_gs.c +++ b/drivers/scsi/qla2xxx/qla_gs.c @@ -3791,23 +3791,25 @@ int qla_fab_async_scan(scsi_qla_host_t *vha, srb_t *sp) return rval; done_free_sp: - if (sp->u.iocb_cmd.u.ctarg.req) { - dma_free_coherent(&vha->hw->pdev->dev, - sp->u.iocb_cmd.u.ctarg.req_allocated_size, - sp->u.iocb_cmd.u.ctarg.req, - sp->u.iocb_cmd.u.ctarg.req_dma); - sp->u.iocb_cmd.u.ctarg.req = NULL; - } - if (sp->u.iocb_cmd.u.ctarg.rsp) { - dma_free_coherent(&vha->hw->pdev->dev, - sp->u.iocb_cmd.u.ctarg.rsp_allocated_size, - sp->u.iocb_cmd.u.ctarg.rsp, - sp->u.iocb_cmd.u.ctarg.rsp_dma); - sp->u.iocb_cmd.u.ctarg.rsp = NULL; - } + if (sp) { + if (sp->u.iocb_cmd.u.ctarg.req) { + dma_free_coherent(&vha->hw->pdev->dev, + sp->u.iocb_cmd.u.ctarg.req_allocated_size, + sp->u.iocb_cmd.u.ctarg.req, + sp->u.iocb_cmd.u.ctarg.req_dma); + sp->u.iocb_cmd.u.ctarg.req = NULL; + } + if (sp->u.iocb_cmd.u.ctarg.rsp) { + dma_free_coherent(&vha->hw->pdev->dev, + sp->u.iocb_cmd.u.ctarg.rsp_allocated_size, + sp->u.iocb_cmd.u.ctarg.rsp, + sp->u.iocb_cmd.u.ctarg.rsp_dma); + sp->u.iocb_cmd.u.ctarg.rsp = NULL; + } - /* ref: INIT */ - kref_put(&sp->cmd_kref, qla2x00_sp_release); + /* ref: INIT */ + kref_put(&sp->cmd_kref, qla2x00_sp_release); + } spin_lock_irqsave(&vha->work_lock, flags); vha->scan.scan_flags &= ~SF_SCANNING; -- 2.39.2

2 1

[PATCH OLK-6.6] dcache: Limit the minimal number of bucket to two
by Zhihao Cheng 02 Mar '26

02 Mar '26

mailist inclusion category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13644 Reference: https://lore.kernel.org/linux-fsdevel/20260130034853.215819-1-chengzhihao1@… -------------------------------- There is an OOB read problem on dentry_hashtable when user sets 'dhash_entries=1': BUG: unable to handle page fault for address: ffff888b30b774b0 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page Oops: Oops: 0000 [#1] SMP PTI RIP: 0010:__d_lookup+0x56/0x120 Call Trace: d_lookup.cold+0x16/0x5d lookup_dcache+0x27/0xf0 lookup_one_qstr_excl+0x2a/0x180 start_dirop+0x55/0xa0 simple_start_creating+0x8d/0xa0 debugfs_start_creating+0x8c/0x180 debugfs_create_dir+0x1d/0x1c0 pinctrl_init+0x6d/0x140 do_one_initcall+0x6d/0x3d0 kernel_init_freeable+0x39f/0x460 kernel_init+0x2a/0x260 There will be only one bucket in dentry_hashtable when dhash_entries is set as one, and d_hash_shift is calculated as 32 by dcache_init(). Then, following process will access more than one buckets(which memory region is not allocated) in dentry_hashtable: d_lookup b = d_hash(hash) dentry_hashtable + ((u32)hashlen >> d_hash_shift) // The C standard defines the behavior of right shift amounts // exceeding the bit width of the operand as undefined. The // result of '(u32)hashlen >> d_hash_shift' becomes 'hashlen', // so 'b' will point to an unallocated memory region. hlist_bl_for_each_entry_rcu(b) hlist_bl_first_rcu(head) h->first // read OOB! Fix it by limiting the minimal number of dentry_hashtable bucket to two, so that 'd_hash_shift' won't exceeds the bit width of type u32. Fixes: ceb5bdc2d246 ("fs: dcache per-bucket dcache hash locking") Cc: stable(a)vger.kernel.org Signed-off-by: Zhihao Cheng <chengzhihao1(a)huawei.com> --- fs/dcache.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/dcache.c b/fs/dcache.c index e0f476c567b0..ea0154f81497 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -3394,7 +3394,7 @@ static void __init dcache_init_early(void) HASH_EARLY | HASH_ZERO, &d_hash_shift, NULL, - 0, + 2, 0); d_hash_shift = 32 - d_hash_shift; } @@ -3422,7 +3422,7 @@ static void __init dcache_init(void) HASH_ZERO, &d_hash_shift, NULL, - 0, + 2, 0); d_hash_shift = 32 - d_hash_shift; } -- 2.52.0

2 1

[PATCH OLK-5.10] dcache: Limit the minimal number of bucket to two
by Zhihao Cheng 02 Mar '26

02 Mar '26

mailist inclusion category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13644 Reference: https://lore.kernel.org/linux-fsdevel/20260130034853.215819-1-chengzhihao1@… -------------------------------- There is an OOB read problem on dentry_hashtable when user sets 'dhash_entries=1': BUG: unable to handle page fault for address: ffff888b30b774b0 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page Oops: Oops: 0000 [#1] SMP PTI RIP: 0010:__d_lookup+0x56/0x120 Call Trace: d_lookup.cold+0x16/0x5d lookup_dcache+0x27/0xf0 lookup_one_qstr_excl+0x2a/0x180 start_dirop+0x55/0xa0 simple_start_creating+0x8d/0xa0 debugfs_start_creating+0x8c/0x180 debugfs_create_dir+0x1d/0x1c0 pinctrl_init+0x6d/0x140 do_one_initcall+0x6d/0x3d0 kernel_init_freeable+0x39f/0x460 kernel_init+0x2a/0x260 There will be only one bucket in dentry_hashtable when dhash_entries is set as one, and d_hash_shift is calculated as 32 by dcache_init(). Then, following process will access more than one buckets(which memory region is not allocated) in dentry_hashtable: d_lookup b = d_hash(hash) dentry_hashtable + ((u32)hashlen >> d_hash_shift) // The C standard defines the behavior of right shift amounts // exceeding the bit width of the operand as undefined. The // result of '(u32)hashlen >> d_hash_shift' becomes 'hashlen', // so 'b' will point to an unallocated memory region. hlist_bl_for_each_entry_rcu(b) hlist_bl_first_rcu(head) h->first // read OOB! Fix it by limiting the minimal number of dentry_hashtable bucket to two, so that 'd_hash_shift' won't exceeds the bit width of type u32. Fixes: ceb5bdc2d246 ("fs: dcache per-bucket dcache hash locking") Cc: stable(a)vger.kernel.org Signed-off-by: Zhihao Cheng <chengzhihao1(a)huawei.com> --- fs/dcache.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/dcache.c b/fs/dcache.c index a316a1b2e144..72b6e6e968cf 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -3270,7 +3270,7 @@ static void __init dcache_init_early(void) HASH_EARLY | HASH_ZERO, &d_hash_shift, NULL, - 0, + 2, 0); d_hash_shift = 32 - d_hash_shift; } @@ -3298,7 +3298,7 @@ static void __init dcache_init(void) HASH_ZERO, &d_hash_shift, NULL, - 0, + 2, 0); d_hash_shift = 32 - d_hash_shift; } -- 2.52.0

2 1

[PATCH OLK-6.6 00/13] HiSock Enhancement
by Pu Lehui 28 Feb '26

28 Feb '26

Liu Jian (1): cgroup: make cgroup_bpf_prog_attach work when cgroup2 is not mounted Pu Lehui (12): bpf: Add BPF_HISOCK_INGRESS attach type bpf: Add bpf_set_ingress_dst kfunc bpf: Add bpf_set_ingress/egress_dev kfunc bpf: Add bpf_get_skb_ethhdr kfunc bpf: Add bpf_handle_ingress/egress_ptype kfunc bpf: Apply BPF_HISOCK_INGRESS to hisock ingress bpf: Only deploy hisock in server bpf: Add multi port parse to hisock_cmd bpf: Add target comm parse to hisock_cmd bpf: Add ipv4-mapped ipv6 addr support for hisock bpf: Add local connect support for hisock bpf: Deprecate hisock unused kfuncs and orig ingress logic include/linux/cgroup.h | 1 + include/linux/filter.h | 24 ++ include/linux/netdevice.h | 4 + include/net/xdp.h | 5 - include/uapi/linux/bpf.h | 2 +- kernel/bpf/cgroup.c | 8 +- kernel/bpf/syscall.c | 33 ++- kernel/bpf/verifier.c | 47 ++++ kernel/cgroup/cgroup.c | 22 ++ net/Kconfig | 1 + net/core/dev.c | 54 +++-- net/core/filter.c | 201 +++++++++++----- net/ipv4/ip_output.c | 31 +-- samples/bpf/hisock/bpf.c | 395 ++++++++++++++++++++++++-------- samples/bpf/hisock/hisock_cmd.c | 198 +++++++++++----- tools/include/uapi/linux/bpf.h | 2 +- tools/lib/bpf/libbpf.c | 4 +- 17 files changed, 750 insertions(+), 282 deletions(-) -- 2.34.1

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[PATCH OLK-5.10 00/13] HiSock Enhancement
by Pu Lehui 28 Feb '26

28 Feb '26

Pu Lehui (12): bpf: Add BPF_HISOCK_INGRESS attach type bpf: Add bpf_set_ingress_dst helper function bpf: Add bpf_get_skb_ethhdr helper function bpf: Add bpf_set_ingress/egress_dev helper function bpf: Add bpf_handle_ingress/egress_ptype helper function bpf: Apply BPF_HISOCK_INGRESS to hisock ingress bpf: Only deploy hisock in server bpf: Add multi port parse to hisock_cmd bpf: Add target comm parse to hisock_cmd bpf: Add ipv4-mapped ipv6 addr support for hisock bpf: Add local connect support for hisock bpf: Deprecate hisock unused helpers and orig ingress logic Vladimir Oltean (1): net: move the ptype_all and ptype_base declarations to include/linux/netdevice.h arch/arm64/include/asm/insn.h | 4 - arch/arm64/kernel/insn.c | 8 - arch/arm64/net/bpf_jit.h | 15 -- arch/arm64/net/bpf_jit_comp.c | 266 ---------------------- include/linux/filter.h | 27 ++- include/linux/netdevice.h | 7 + include/net/xdp.h | 5 - include/uapi/linux/bpf.h | 51 +++-- kernel/bpf/core.c | 7 - kernel/bpf/helpers.c | 27 --- kernel/bpf/syscall.c | 33 ++- kernel/bpf/verifier.c | 25 -- net/Kconfig | 1 + net/core/dev.c | 53 +++-- net/core/filter.c | 322 +++++++++++++++++--------- net/core/net-procfs.c | 3 - net/ipv4/ip_output.c | 31 +-- samples/bpf/hisock/bpf.c | 391 ++++++++++++++++++++++++-------- samples/bpf/hisock/hisock_cmd.c | 198 +++++++++++----- tools/bpf/bpftool/common.c | 1 + tools/include/uapi/linux/bpf.h | 53 +++-- tools/lib/bpf/libbpf.c | 4 +- 22 files changed, 803 insertions(+), 729 deletions(-) -- 2.34.1

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[PATCH OLK-6.6 0/2] Fix CVE-2026-23205
by Zizhi Wo 28 Feb '26

28 Feb '26

Fix CVE-2026-23205 ChenXiaoSong (1): smb/client: fix memory leak in smb2_open_file() Paulo Alcantara (1): smb: client: fix potential UAF and double free in smb2_open_file() fs/smb/client/smb2file.c | 3 +++ 1 file changed, 3 insertions(+) -- 2.39.2

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[PATCH OLK-5.10] nvmet-tcp: add bounds checks in nvmet_tcp_build_pdu_iovec
by Zizhi Wo 28 Feb '26

28 Feb '26

From: YunJe Shin <yjshin0438(a)gmail.com> stable inclusion from stable-v5.10.250 commit 043b4307a99f902697349128fde93b2ddde4686c category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13660 CVE: CVE-2026-23112 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 52a0a98549344ca20ad81a4176d68d28e3c05a5c ] nvmet_tcp_build_pdu_iovec() could walk past cmd->req.sg when a PDU length or offset exceeds sg_cnt and then use bogus sg->length/offset values, leading to _copy_to_iter() GPF/KASAN. Guard sg_idx, remaining entries, and sg->length/offset before building the bvec. Fixes: 872d26a391da ("nvmet-tcp: add NVMe over TCP target driver") Signed-off-by: YunJe Shin <ioerts(a)kookmin.ac.kr> Reviewed-by: Sagi Grimberg <sagi(a)grimberg.me> Reviewed-by: Joonkyo Jung <joonkyoj(a)yonsei.ac.kr> Signed-off-by: Keith Busch <kbusch(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Conflicts: drivers/nvme/target/tcp.c [Due to commit 5bfaba275ae6 ("nvmet-tcp: don't map pages which can't come from HIGHMEM") not been merged, which is not related to this patch.] Signed-off-by: Zizhi Wo <wozizhi(a)huawei.com> --- drivers/nvme/target/tcp.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c index da2f9c9e0a6d..a470ffb93f66 100644 --- a/drivers/nvme/target/tcp.c +++ b/drivers/nvme/target/tcp.c @@ -286,6 +286,8 @@ static int nvmet_tcp_check_ddgst(struct nvmet_tcp_queue *queue, void *pdu) return 0; } +static void nvmet_tcp_fatal_error(struct nvmet_tcp_queue *queue); + static void nvmet_tcp_unmap_pdu_iovec(struct nvmet_tcp_cmd *cmd) { struct scatterlist *sg; @@ -302,22 +304,38 @@ static void nvmet_tcp_map_pdu_iovec(struct nvmet_tcp_cmd *cmd) struct kvec *iov = cmd->iov; struct scatterlist *sg; u32 length, offset, sg_offset; + unsigned int sg_remaining; length = cmd->pdu_len; cmd->nr_mapped = DIV_ROUND_UP(length, PAGE_SIZE); offset = cmd->rbytes_done; cmd->sg_idx = offset / PAGE_SIZE; sg_offset = offset % PAGE_SIZE; + if (!cmd->req.sg_cnt || cmd->sg_idx >= cmd->req.sg_cnt) { + nvmet_tcp_fatal_error(cmd->queue); + return; + } sg = &cmd->req.sg[cmd->sg_idx]; + sg_remaining = cmd->req.sg_cnt - cmd->sg_idx; while (length) { u32 iov_len = min_t(u32, length, sg->length - sg_offset); + if (!sg_remaining) { + nvmet_tcp_fatal_error(cmd->queue); + return; + } + if (!sg->length || sg->length <= sg_offset) { + nvmet_tcp_fatal_error(cmd->queue); + return; + } + iov->iov_base = kmap(sg_page(sg)) + sg->offset + sg_offset; iov->iov_len = iov_len; length -= iov_len; sg = sg_next(sg); + sg_remaining--; iov++; sg_offset = 0; } -- 2.39.2

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[PATCH OLK-6.6] ksmbd: add chann_lock to protect ksmbd_chann_list xarray
by Long Li 28 Feb '26

28 Feb '26

From: Namjae Jeon <linkinjeon(a)kernel.org> stable inclusion from stable-v6.18.10 commit e4a8a96a93d08570e0405cfd989a8a07e5b6ff33 category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13791 CVE: CVE-2026-23226 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=… -------------------------------- commit 4f3a06cc57976cafa8c6f716646be6c79a99e485 upstream. ksmbd_chann_list xarray lacks synchronization, allowing use-after-free in multi-channel sessions (between lookup_chann_list() and ksmbd_chann_del). Adds rw_semaphore chann_lock to struct ksmbd_session and protects all xa_load/xa_store/xa_erase accesses. Cc: stable(a)vger.kernel.org Reported-by: Igor Stepansky <igor.stepansky(a)orca.security> Signed-off-by: Namjae Jeon <linkinjeon(a)kernel.org> Signed-off-by: Steve French <stfrench(a)microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Conflicts: fs/smb/server/smb2pdu.c [Context conflicts] Signed-off-by: Long Li <leo.lilong(a)huawei.com> --- fs/smb/server/mgmt/user_session.c | 5 +++++ fs/smb/server/mgmt/user_session.h | 1 + fs/smb/server/smb2pdu.c | 12 +++++++++++- 3 files changed, 17 insertions(+), 1 deletion(-) diff --git a/fs/smb/server/mgmt/user_session.c b/fs/smb/server/mgmt/user_session.c index 123e00c0ee3a..6cde4acb84b8 100644 --- a/fs/smb/server/mgmt/user_session.c +++ b/fs/smb/server/mgmt/user_session.c @@ -32,12 +32,14 @@ static void free_channel_list(struct ksmbd_session *sess) struct channel *chann; unsigned long index; + down_write(&sess->chann_lock); xa_for_each(&sess->ksmbd_chann_list, index, chann) { xa_erase(&sess->ksmbd_chann_list, index); kfree(chann); } xa_destroy(&sess->ksmbd_chann_list); + up_write(&sess->chann_lock); } static void __session_rpc_close(struct ksmbd_session *sess, @@ -214,7 +216,9 @@ static int ksmbd_chann_del(struct ksmbd_conn *conn, struct ksmbd_session *sess) { struct channel *chann; + down_write(&sess->chann_lock); chann = xa_erase(&sess->ksmbd_chann_list, (long)conn); + up_write(&sess->chann_lock); if (!chann) return -ENOENT; @@ -446,6 +450,7 @@ static struct ksmbd_session *__session_create(int protocol) rwlock_init(&sess->tree_conns_lock); atomic_set(&sess->refcnt, 2); init_rwsem(&sess->rpc_lock); + init_rwsem(&sess->chann_lock); ret = __init_smb2_session(sess); if (ret) diff --git a/fs/smb/server/mgmt/user_session.h b/fs/smb/server/mgmt/user_session.h index c5749d6ec715..cba7f688f6b5 100644 --- a/fs/smb/server/mgmt/user_session.h +++ b/fs/smb/server/mgmt/user_session.h @@ -49,6 +49,7 @@ struct ksmbd_session { char sess_key[CIFS_KEY_SIZE]; struct hlist_node hlist; + struct rw_semaphore chann_lock; struct xarray ksmbd_chann_list; struct xarray tree_conns; struct ida tree_conn_ida; diff --git a/fs/smb/server/smb2pdu.c b/fs/smb/server/smb2pdu.c index 1ec50a9272ea..010f0d777e83 100644 --- a/fs/smb/server/smb2pdu.c +++ b/fs/smb/server/smb2pdu.c @@ -77,7 +77,13 @@ static inline bool check_session_id(struct ksmbd_conn *conn, u64 id) struct channel *lookup_chann_list(struct ksmbd_session *sess, struct ksmbd_conn *conn) { - return xa_load(&sess->ksmbd_chann_list, (long)conn); + struct channel *chann; + + down_read(&sess->chann_lock); + chann = xa_load(&sess->ksmbd_chann_list, (long)conn); + up_read(&sess->chann_lock); + + return chann; } /** @@ -1556,7 +1562,9 @@ static int ntlm_authenticate(struct ksmbd_work *work, return -ENOMEM; chann->conn = conn; + down_write(&sess->chann_lock); xa_store(&sess->ksmbd_chann_list, (long)conn, chann, GFP_KERNEL); + up_write(&sess->chann_lock); } } @@ -1649,7 +1657,9 @@ static int krb5_authenticate(struct ksmbd_work *work, return -ENOMEM; chann->conn = conn; + down_write(&sess->chann_lock); xa_store(&sess->ksmbd_chann_list, (long)conn, chann, GFP_KERNEL); + up_write(&sess->chann_lock); } } -- 2.39.2

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