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scsi: sd: Clean up gendisk if device_add_disk() failed

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We forgot to call blk_cleanup_disk() when device_add_disk() failed.  This
would cause a memory leak of gendisk and sched_tags allocated in
elevator_init_mq()

Reference:https://syzkaller.appspot.com/x/log.txt?x=13b41dcb700000
Reported-and-tested-by: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Wenchao Hao <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
This commit is contained in:
Wenchao Hao authored and Martin K. Petersen committed 2022-04-06 22:37:49 -04:00
1 parent 61144d8337
commit 03252259e1
1 file changed
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drivers/scsi/sd.c
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@@ -3475,6 +3475,7 @@ static int sd_probe(struct device *dev)
error = device_add_disk(dev, gd, NULL);
if (error) {
put_device(&sdkp->disk_dev);
blk_cleanup_disk(gd);
goto out;
}