From: Nilesh Javali <njavali@marvell.com>
To: <martin.petersen@oracle.com>
Cc: <linux-scsi@vger.kernel.org>,
<GR-QLogic-Storage-Upstream@marvell.com>,
<agurumurthy@marvell.com>, <sdeodhar@marvell.com>,
<emilne@redhat.com>, <jmeneghi@redhat.com>
Subject: [PATCH v2 09/12] qla2xxx: validate sp before freeing associated memory
Date: Thu, 4 Dec 2025 20:47:48 +0530 [thread overview]
Message-ID: <20251204151751.2321801-10-njavali@marvell.com> (raw)
In-Reply-To: <20251204151751.2321801-1-njavali@marvell.com>
From: Anil Gurumurthy <agurumurthy@marvell.com>
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@vger.kernel.org
Signed-off-by: Anil Gurumurthy <agurumurthy@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani2024@gmail.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 e5ebb9c5b650..880cd73feaca 100644
--- a/drivers/scsi/qla2xxx/qla_gs.c
+++ b/drivers/scsi/qla2xxx/qla_gs.c
@@ -3698,23 +3698,25 @@ 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;
--
2.23.1
next prev parent reply other threads:[~2025-12-04 15:18 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-04 15:17 [PATCH v2 00/12] qla2xxx: Misc feature and bug fixes Nilesh Javali
2025-12-04 15:17 ` [PATCH v2 01/12] qla2xxx: Add Speed in SFP print information Nilesh Javali
2025-12-04 15:17 ` [PATCH v2 02/12] qla2xxx: Add support for 64G SFP speed Nilesh Javali
2025-12-04 15:17 ` [PATCH v2 03/12] qla2xxx: Add load flash firmware mailbox support for 28xxx Nilesh Javali
2025-12-04 15:17 ` [PATCH v2 04/12] qla2xxx: Validate MCU signature before executing MBC 03h Nilesh Javali
2025-12-04 15:17 ` [PATCH v2 05/12] qla2xxx: Add bsg interface to support firmware img validation Nilesh Javali
2025-12-04 15:17 ` [PATCH v2 06/12] qla2xxx: Allow recovery for tape devices Nilesh Javali
2025-12-04 15:17 ` [PATCH v2 07/12] qla2xxx: Delay module unload while fabric scan in progress Nilesh Javali
2025-12-09 8:14 ` Dan Carpenter
2025-12-04 15:17 ` [PATCH v2 08/12] qla2xxx: free sp in error path to fix system crash Nilesh Javali
2025-12-04 15:17 ` Nilesh Javali [this message]
2025-12-04 15:17 ` [PATCH v2 10/12] qla2xxx: Query FW again before proceeding with login Nilesh Javali
2025-12-04 15:17 ` [PATCH v2 11/12] qla2xxx: fix bsg_done causing double free Nilesh Javali
2025-12-04 15:17 ` [PATCH v2 12/12] qla2xxx: Update version to 10.02.10.100-k Nilesh Javali
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