From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Dan's list included:
drivers/scsi/scsi_lib.c +1365 scsi_kill_request(9) warning: variable derefenced in initializer 'cmd'
drivers/scsi/scsi_lib.c +1365 scsi_kill_request(9) warning: variable derefenced before check 'cmd'
We dereference cmd (and possible OOPS if cmd == NULL) before starting the
request so just remove the superfluous debugging code altogether.
[ bart: the potential NULL pointer dereference was finally fixed in
(much later than mine) commit 03b1470 but my patch is still valid ]
Reported-by: Dan Carpenter <error27@xxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Eugene Teo <eteo@xxxxxxxxxx>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Cc: James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/scsi/scsi_lib.c | 6 ------
1 file changed, 6 deletions(-)
diff -puN drivers/scsi/scsi_lib.c~scsi-remove-superfluous-null-pointer-check-from-scsi_kill_request drivers/scsi/scsi_lib.c
--- a/drivers/scsi/scsi_lib.c~scsi-remove-superfluous-null-pointer-check-from-scsi_kill_request
+++ a/drivers/scsi/scsi_lib.c
@@ -1372,12 +1372,6 @@ static void scsi_kill_request(struct req
blk_start_request(req);
- if (unlikely(cmd == NULL)) {
- printk(KERN_CRIT "impossible request in %s.\n",
- __func__);
- BUG();
- }
-
sdev = cmd->device;
starget = scsi_target(sdev);
shost = sdev->host;
_
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