diff options
| author | Yihang Li <liyihang9@huawei.com> | 2023-12-14 11:45:14 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-12-13 23:24:54 -0500 |
| commit | 8dd10296be8562a45c6c6794dd492a2b7dccede8 (patch) | |
| tree | 2761d468e3d926814d6ba8ce6cabc5f984f1c6d9 /drivers/scsi/hisi_sas/hisi_sas_main.c | |
| parent | d34ee535705eb43885bc0f561c63046f697355ad (diff) | |
scsi: hisi_sas: Check before using pointer variables
In commit 4b329abc9180 ("scsi: hisi_sas: Move slot variable definition in
hisi_sas_abort_task()"), we move the variables slot to the function head.
However, the variable slot may be NULL, we should check it in each branch.
Fixes: 4b329abc9180 ("scsi: hisi_sas: Move slot variable definition in hisi_sas_abort_task()")
Signed-off-by: Yihang Li <liyihang9@huawei.com>
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1702525516-51258-4-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/hisi_sas/hisi_sas_main.c')
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas_main.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 16017064e96a..bbb7b2d9ffcf 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -1641,7 +1641,10 @@ static int hisi_sas_abort_task(struct sas_task *task) task->task_state_flags |= SAS_TASK_STATE_ABORTED; spin_unlock_irqrestore(&task->task_state_lock, flags); - if (slot && task->task_proto & SAS_PROTOCOL_SSP) { + if (!slot) + goto out; + + if (task->task_proto & SAS_PROTOCOL_SSP) { u16 tag = slot->idx; int rc2; @@ -1688,7 +1691,7 @@ static int hisi_sas_abort_task(struct sas_task *task) rc = hisi_sas_softreset_ata_disk(device); } } - } else if (slot && task->task_proto & SAS_PROTOCOL_SMP) { + } else if (task->task_proto & SAS_PROTOCOL_SMP) { /* SMP */ u32 tag = slot->idx; struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue]; |