Author: oshogbo
Date: Sat May 2 18:12:34 2015
New Revision: 282350
URL: https://svnweb.freebsd.org/changeset/base/282350
Log:
nv_malloc can fail in userland.
Add check to prevent a NULL pointer dereference.
Pointed out by: mjg
Approved by: pjd (mentor)
Modified:
head/sys/kern/subr_nvlist.c
Modified: head/sys/kern/subr_nvlist.c
==============================================================================
--- head/sys/kern/subr_nvlist.c Sat May 2 18:10:45 2015 (r282349)
+++ head/sys/kern/subr_nvlist.c Sat May 2 18:12:34 2015 (r282350)
@@ -129,6 +129,8 @@ nvlist_create(int flags)
PJDLOG_ASSERT((flags & ~(NV_FLAG_PUBLIC_MASK)) == 0);
nvl = nv_malloc(sizeof(*nvl));
+ if (nvl == NULL)
+ return (NULL);
nvl->nvl_error = 0;
nvl->nvl_flags = flags;
nvl->nvl_parent = NULL;
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