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fs: handle failed audit_log_start properly
authorSasha Levin <sasha.levin@oracle.com>
Thu, 4 Oct 2012 23:57:31 +0000 (19:57 -0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Wed, 10 Oct 2012 03:33:37 +0000 (23:33 -0400)
audit_log_start() may return NULL, this is unchecked by the caller in
audit_log_link_denied() and could cause a NULL ptr deref.

Introduced by commit a51d9eaa ("fs: add link restriction audit reporting").

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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