6.6-stable review patch. If anyone has any objections, please let me know.
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From: Ranjan Kumar ranjan.kumar@broadcom.com
commit e6327c4acf925bb6d6d387d76fc3bd94471e10d8 upstream.
The "is_waiting" flag was updated after calling complete(), which could lead to a race where the waiting thread wakes up before the flag is cleared. This may cause a missed wakeup or stale state check.
Reorder the operations to update "is_waiting" before signaling completion to ensure consistent state.
Fixes: 824a156633df ("scsi: mpi3mr: Base driver code") Cc: stable@vger.kernel.org Co-developed-by: Chandrakanth Patil chandrakanth.patil@broadcom.com Signed-off-by: Chandrakanth Patil chandrakanth.patil@broadcom.com Signed-off-by: Ranjan Kumar ranjan.kumar@broadcom.com Link: https://lore.kernel.org/r/20250627194539.48851-2-ranjan.kumar@broadcom.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/mpi3mr/mpi3mr_fw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/scsi/mpi3mr/mpi3mr_fw.c +++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c @@ -411,8 +411,8 @@ static void mpi3mr_process_admin_reply_d MPI3MR_SENSE_BUF_SZ); } if (cmdptr->is_waiting) { - complete(&cmdptr->done); cmdptr->is_waiting = 0; + complete(&cmdptr->done); } else if (cmdptr->callback) cmdptr->callback(mrioc, cmdptr); }