Re: [PATCH] scsi: core: Fix handling of SCMD_FAIL_IF_RECOVERING

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On 3/25/24 15:44, Bart Van Assche wrote:
There is code in the SCSI core that sets the SCMD_FAIL_IF_RECOVERING
flag but there is no code that clears this flag. Instead of only clearing
SCMD_INITIALIZED in scsi_end_request(), clear all flags. It is never
necessary to preserve any command flags inside scsi_end_request().

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 310bcaef6d7e ("scsi: core: Support failing requests while recovering")
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
  drivers/scsi/scsi_lib.c | 7 +++----
  1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index ca48ba9a229a..2fc2b97777ca 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -633,10 +633,9 @@ static bool scsi_end_request(struct request *req, blk_status_t error,
  	if (blk_queue_add_random(q))
  		add_disk_randomness(req->q->disk);
- if (!blk_rq_is_passthrough(req)) {
-		WARN_ON_ONCE(!(cmd->flags & SCMD_INITIALIZED));
-		cmd->flags &= ~SCMD_INITIALIZED;
-	}
+	WARN_ON_ONCE(!blk_rq_is_passthrough(req) &&
+		     !(cmd->flags & SCMD_INITIALIZED));
+	cmd->flags = 0;
/*
  	 * Calling rcu_barrier() is not necessary here because the

Also for this patch, please help with reviewing this patch.

Thanks,

Bart.




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