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[v2,02/11] qla2xxx: validate nvme_local_port correctly

Message ID 20240710171057.35066-3-njavali@marvell.com (mailing list archive)
State Accepted
Headers show
Series qla2xxx misc. bug fixes | expand

Commit Message

Nilesh Javali July 10, 2024, 5:10 p.m. UTC
The driver load failed with error message,

qla2xxx [0000:04:00.0]-ffff:0: register_localport failed: ret=ffffffef

and with a kernel crash,

	BUG: unable to handle kernel NULL pointer dereference at 0000000000000070
	Workqueue: events_unbound qla_register_fcport_fn [qla2xxx]
	RIP: 0010:nvme_fc_register_remoteport+0x16/0x430 [nvme_fc]
	RSP: 0018:ffffaaa040eb3d98 EFLAGS: 00010282
	RAX: 0000000000000000 RBX: ffff9dfb46b78c00 RCX: 0000000000000000
	RDX: ffff9dfb46b78da8 RSI: ffffaaa040eb3e08 RDI: 0000000000000000
	RBP: ffff9dfb612a0a58 R08: ffffffffaf1d6270 R09: 3a34303a30303030
	R10: 34303a303030305b R11: 2078787832616c71 R12: ffff9dfb46b78dd4
	R13: ffff9dfb46b78c24 R14: ffff9dfb41525300 R15: ffff9dfb46b78da8
	FS:  0000000000000000(0000) GS:ffff9dfc67c00000(0000) knlGS:0000000000000000
	CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
	CR2: 0000000000000070 CR3: 000000018da10004 CR4: 00000000000206f0
	Call Trace:
	qla_nvme_register_remote+0xeb/0x1f0 [qla2xxx]
	? qla2x00_dfs_create_rport+0x231/0x270 [qla2xxx]
	qla2x00_update_fcport+0x2a1/0x3c0 [qla2xxx]
	qla_register_fcport_fn+0x54/0xc0 [qla2xxx]

Exit the qla_nvme_register_remote function when
qla_nvme_register_hba fails and correctly validate
nvme_local_port.

Cc: stable@vger.kernel.org
Signed-off-by: Nilesh Javali <njavali@marvell.com>
---
 drivers/scsi/qla2xxx/qla_nvme.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Comments

Himanshu Madhani July 10, 2024, 7:32 p.m. UTC | #1
On 7/10/24 10:10 AM, Nilesh Javali wrote:
> The driver load failed with error message,
> 
> qla2xxx [0000:04:00.0]-ffff:0: register_localport failed: ret=ffffffef
> 
> and with a kernel crash,
> 
> 	BUG: unable to handle kernel NULL pointer dereference at 0000000000000070
> 	Workqueue: events_unbound qla_register_fcport_fn [qla2xxx]
> 	RIP: 0010:nvme_fc_register_remoteport+0x16/0x430 [nvme_fc]
> 	RSP: 0018:ffffaaa040eb3d98 EFLAGS: 00010282
> 	RAX: 0000000000000000 RBX: ffff9dfb46b78c00 RCX: 0000000000000000
> 	RDX: ffff9dfb46b78da8 RSI: ffffaaa040eb3e08 RDI: 0000000000000000
> 	RBP: ffff9dfb612a0a58 R08: ffffffffaf1d6270 R09: 3a34303a30303030
> 	R10: 34303a303030305b R11: 2078787832616c71 R12: ffff9dfb46b78dd4
> 	R13: ffff9dfb46b78c24 R14: ffff9dfb41525300 R15: ffff9dfb46b78da8
> 	FS:  0000000000000000(0000) GS:ffff9dfc67c00000(0000) knlGS:0000000000000000
> 	CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> 	CR2: 0000000000000070 CR3: 000000018da10004 CR4: 00000000000206f0
> 	Call Trace:
> 	qla_nvme_register_remote+0xeb/0x1f0 [qla2xxx]
> 	? qla2x00_dfs_create_rport+0x231/0x270 [qla2xxx]
> 	qla2x00_update_fcport+0x2a1/0x3c0 [qla2xxx]
> 	qla_register_fcport_fn+0x54/0xc0 [qla2xxx]
> 
> Exit the qla_nvme_register_remote function when
> qla_nvme_register_hba fails and correctly validate
> nvme_local_port.
> 
> Cc: stable@vger.kernel.org
> Signed-off-by: Nilesh Javali <njavali@marvell.com>
> ---
>   drivers/scsi/qla2xxx/qla_nvme.c | 5 ++++-
>   1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
> index a8ddf356e662..8f4cc136a9c9 100644
> --- a/drivers/scsi/qla2xxx/qla_nvme.c
> +++ b/drivers/scsi/qla2xxx/qla_nvme.c
> @@ -49,7 +49,10 @@ int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
>   		return 0;
>   	}
>   
> -	if (!vha->nvme_local_port && qla_nvme_register_hba(vha))
> +	if (qla_nvme_register_hba(vha))
> +		return 0;
> +
> +	if (!vha->nvme_local_port)
>   		return 0;
>   
>   	if (!(fcport->nvme_prli_service_param &

Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
diff mbox series

Patch

diff --git a/drivers/scsi/qla2xxx/qla_nvme.c b/drivers/scsi/qla2xxx/qla_nvme.c
index a8ddf356e662..8f4cc136a9c9 100644
--- a/drivers/scsi/qla2xxx/qla_nvme.c
+++ b/drivers/scsi/qla2xxx/qla_nvme.c
@@ -49,7 +49,10 @@  int qla_nvme_register_remote(struct scsi_qla_host *vha, struct fc_port *fcport)
 		return 0;
 	}
 
-	if (!vha->nvme_local_port && qla_nvme_register_hba(vha))
+	if (qla_nvme_register_hba(vha))
+		return 0;
+
+	if (!vha->nvme_local_port)
 		return 0;
 
 	if (!(fcport->nvme_prli_service_param &