* [resend] [patch] [SCSI] bfa: dereferencing freed memory in bfad_im_probe()
[not found] <20110729085306.GH3752@shale.localdomain>
@ 2012-02-29 12:59 ` Dan Carpenter
0 siblings, 0 replies; only message in thread
From: Dan Carpenter @ 2012-02-29 12:59 UTC (permalink / raw)
To: Jing Huang
Cc: James E.J. Bottomley, open list:BROCADE BFA FC SC...,
linux-kernel, kernel-janitors
If bfad_thread_workq(bfad) was not BFA_STATUS_OK then we freed "im"
and then dereferenced it.
I did a little clean up because it seemed nicer to return directly
instead of doing a superfluous goto. I looked at other functions in
this file and it seems like returning directly is standard.
Signed-off-by: Dan Carpenter <error27@gmail.com>
---
I sent this last July and asked about it again in November but I never
heard back. It still applies fine with 2 lines of fuzz.
diff --git a/drivers/scsi/bfa/bfad_im.c b/drivers/scsi/bfa/bfad_im.c
index 0131238..7f7cca0 100644
--- a/drivers/scsi/bfa/bfad_im.c
+++ b/drivers/scsi/bfa/bfad_im.c
@@ -685,25 +685,21 @@ bfa_status_t
bfad_im_probe(struct bfad_s *bfad)
{
struct bfad_im_s *im;
- bfa_status_t rc = BFA_STATUS_OK;
im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
- if (im == NULL) {
- rc = BFA_STATUS_ENOMEM;
- goto ext;
- }
+ if (im == NULL)
+ return BFA_STATUS_ENOMEM;
bfad->im = im;
im->bfad = bfad;
if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
kfree(im);
- rc = BFA_STATUS_FAILED;
+ return BFA_STATUS_FAILED;
}
INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
-ext:
- return rc;
+ return BFA_STATUS_OK;
}
void
^ permalink raw reply related [flat|nested] only message in thread
only message in thread, other threads:[~2012-02-29 13:00 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <20110729085306.GH3752@shale.localdomain>
2012-02-29 12:59 ` [resend] [patch] [SCSI] bfa: dereferencing freed memory in bfad_im_probe() Dan Carpenter
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).