[PATCH] audit: fix kstrdup() error check

kstrdup() returns NULL on error.

Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index 2e896f8..9c8c232 100644 (file)
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -800,8 +800,8 @@ static inline int audit_dupe_selinux_field(struct audit_field *df,
 
        /* our own copy of se_str */
        se_str = kstrdup(sf->se_str, GFP_KERNEL);
-       if (unlikely(IS_ERR(se_str)))
-           return -ENOMEM;
+       if (unlikely(!se_str))
+               return -ENOMEM;
        df->se_str = se_str;
 
        /* our own (refreshed) copy of se_rule */