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| author | Guixin Liu <kanie@linux.alibaba.com> | 2025-03-13 09:47:27 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-04-10 14:44:09 +0200 |
| commit | 8ed94320ba9e88f418f6d4ca3a52add65df5f51e (patch) | |
| tree | 707ad06534593a262da3d1bd46770aa23f88bc07 /drivers/target | |
| parent | 059592207c1695a2cb344fd522927b884f5fb2de (diff) | |
| download | linux-8ed94320ba9e88f418f6d4ca3a52add65df5f51e.tar.gz linux-8ed94320ba9e88f418f6d4ca3a52add65df5f51e.tar.bz2 linux-8ed94320ba9e88f418f6d4ca3a52add65df5f51e.zip | |
scsi: target: tcm_loop: Fix wrong abort tag
[ Upstream commit 1909b643034ef741af9f24a57ab735440c4b5d1a ]
When the tcm_loop_nr_hw_queues is set to a value greater than 1, the
tags of requests in the block layer are no longer unique. This may lead
to erroneous aborting of commands with the same tag. The issue can be
resolved by using blk_mq_unique_tag to generate globally unique
identifiers by combining the hardware queue index and per-queue tags.
Fixes: 6375f8908255 ("tcm_loop: Fixup tag handling")
Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
Link: https://lore.kernel.org/r/20250313014728.105849-1-kanie@linux.alibaba.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/loopback/tcm_loop.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 761c511aea07..c7b7da629741 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -176,7 +176,7 @@ static int tcm_loop_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *sc) memset(tl_cmd, 0, sizeof(*tl_cmd)); tl_cmd->sc = sc; - tl_cmd->sc_cmd_tag = scsi_cmd_to_rq(sc)->tag; + tl_cmd->sc_cmd_tag = blk_mq_unique_tag(scsi_cmd_to_rq(sc)); tcm_loop_target_queue_cmd(tl_cmd); return 0; @@ -242,7 +242,8 @@ static int tcm_loop_abort_task(struct scsi_cmnd *sc) tl_hba = *(struct tcm_loop_hba **)shost_priv(sc->device->host); tl_tpg = &tl_hba->tl_hba_tpgs[sc->device->id]; ret = tcm_loop_issue_tmr(tl_tpg, sc->device->lun, - scsi_cmd_to_rq(sc)->tag, TMR_ABORT_TASK); + blk_mq_unique_tag(scsi_cmd_to_rq(sc)), + TMR_ABORT_TASK); return (ret == TMR_FUNCTION_COMPLETE) ? SUCCESS : FAILED; } |