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staging: lustre: lnet: klnds: o2iblnd: fix null dereference on failed path in o2iblnd.c

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If net is null and failed path is executed, dereference null may happen.
This patch fixes it. The following Coccinelle semantic patch was used.

@@
expression E, E1;
identifier f;
statement S1,S2,S3;
@@

* if (E == NULL)
{
  ... when != if (E == NULL) S1 else S2
      when != E = E1
* E->f
  ... when any
  return ...;
}
else S3

Signed-off-by: Jiayi Ye <yejiayily@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiayi Ye
2014-10-25 11:40:32 +08:00
committed by Greg Kroah-Hartman
parent 85b4260ddf
commit 3247c4e5ef
1 changed files with 2 additions and 1 deletions
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3
drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c
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@@ -3081,7 +3081,7 @@ kiblnd_startup (lnet_ni_t *ni)
LIBCFS_ALLOC(net, sizeof(*net));
ni->ni_data = net;
if (net == NULL)
goto failed;
goto net_failed;
do_gettimeofday(&tv);
net->ibn_incarnation = (((__u64)tv.tv_sec) * 1000000) + tv.tv_usec;
@@ -3147,6 +3147,7 @@ kiblnd_startup (lnet_ni_t *ni)
if (net->ibn_dev == NULL && ibdev != NULL)
kiblnd_destroy_dev(ibdev);
net_failed:
kiblnd_shutdown(ni);
CDEBUG(D_NET, "kiblnd_startup failed\n");