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| author | John Garry <john.garry@huawei.com> | 2022-02-10 13:43:24 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-02-12 01:02:50 +0300 |
| commit | 26fc0ea74fcb9b76b41f5e9b89728cd1c01559cd (patch) | |
| tree | be8fb5e6ebc63597c147c35729e90a1c0ba4b1a2 /drivers/scsi/hisi_sas/hisi_sas_main.c | |
| parent | c39d5aa457f2472c710e9e4cadb207338c0d34af (diff) | |
| download | linux-26fc0ea74fcb9b76b41f5e9b89728cd1c01559cd.tar.xz | |
scsi: libsas: Drop SAS_TASK_AT_INITIATOR
This flag is now only ever set, so delete it.
This also avoids a use-after-free in the pm8001 queue path, as reported in
the following:
https://lore.kernel.org/linux-scsi/c3cb7228-254e-9584-182b-007ac5e6fe0a@huawei.com/T/#m28c94c6d3ff582ec4a9fa54819180740e8bd4cfb
https://lore.kernel.org/linux-scsi/0cc0c435-b4f2-9c76-258d-865ba50a29dd@huawei.com/
[mkp: checkpatch + two SAS_TASK_AT_INITIATOR references]
Link: https://lore.kernel.org/r/1644489804-85730-3-git-send-email-john.garry@huawei.com
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: John Garry <john.garry@huawei.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 | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index a05ec7aece5a..5aaf7217a3a6 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -406,7 +406,6 @@ void hisi_sas_task_deliver(struct hisi_hba *hisi_hba, struct hisi_sas_cmd_hdr *cmd_hdr_base; int dlvry_queue_slot, dlvry_queue; struct sas_task *task = slot->task; - unsigned long flags; int wr_q_index; spin_lock(&dq->lock); @@ -460,10 +459,6 @@ void hisi_sas_task_deliver(struct hisi_hba *hisi_hba, break; } - spin_lock_irqsave(&task->task_state_lock, flags); - task->task_state_flags |= SAS_TASK_AT_INITIATOR; - spin_unlock_irqrestore(&task->task_state_lock, flags); - WRITE_ONCE(slot->ready, 1); spin_lock(&dq->lock); @@ -1038,8 +1033,7 @@ static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, struct sas_task ts->resp = SAS_TASK_COMPLETE; ts->stat = SAS_ABORTED_TASK; spin_lock_irqsave(&task->task_state_lock, flags); - task->task_state_flags &= - ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR); + task->task_state_flags &= ~SAS_TASK_STATE_PENDING; if (!slot->is_internal && task->task_proto != SAS_PROTOCOL_SMP) task->task_state_flags |= SAS_TASK_STATE_DONE; spin_unlock_irqrestore(&task->task_state_lock, flags); |