diff mbox series

scsi: mpi3mr: fix possible crash when setup bsg fail

Message ID 20241217103126.88206-1-kanie@linux.alibaba.com (mailing list archive)
State Superseded
Headers show
Series scsi: mpi3mr: fix possible crash when setup bsg fail | expand

Commit Message

Guixin Liu Dec. 17, 2024, 10:31 a.m. UTC 
If bsg_setup_queue() fails, the bsg_queue is assigned a non-NULL value.
Consequently, in mpi3mr_bsg_exit(), the condition
"if(!mrioc->bsg_queue)" will not be satisfied, preventing execution
from entering bsg_remove_queue(), which could lead to a crash.

Fixes: 4268fa751365 ("scsi: mpi3mr: Add bsg device support")
Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
---
 drivers/scsi/mpi3mr/mpi3mr_app.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c
index 10b8e4dc64f8..f4cacae1d3a4 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_app.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_app.c
@@ -2951,6 +2951,7 @@  void mpi3mr_bsg_init(struct mpi3mr_ioc *mrioc)
 		.max_hw_sectors		= MPI3MR_MAX_APP_XFER_SECTORS,
 		.max_segments		= MPI3MR_MAX_APP_XFER_SEGMENTS,
 	};
+	struct request_queue *q;
 
 	device_initialize(bsg_dev);
 
@@ -2966,14 +2967,16 @@  void mpi3mr_bsg_init(struct mpi3mr_ioc *mrioc)
 		return;
 	}
 
-	mrioc->bsg_queue = bsg_setup_queue(bsg_dev, dev_name(bsg_dev), &lim,
+	q = bsg_setup_queue(bsg_dev, dev_name(bsg_dev), &lim,
 			mpi3mr_bsg_request, NULL, 0);
-	if (IS_ERR(mrioc->bsg_queue)) {
+	if (IS_ERR(q)) {
 		ioc_err(mrioc, "%s: bsg registration failed\n",
 		    dev_name(bsg_dev));
 		device_del(bsg_dev);
 		put_device(bsg_dev);
 	}
+
+	mrioc->bsg_queue = q;
 }
 
 /**