From: Xiaoke Wang <xkernel.wang@xxxxxxxxxxx> audit_log_start() returns audit_buffer pointer on success or NULL on error, so it is better to check the return value of it. Signed-off-by: Xiaoke Wang <xkernel.wang@xxxxxxxxxxx> Reviewed-by: Paul Moore <paul@xxxxxxxxxxxxxx> --- Changelogs: V3 -> V4: update the mail list. V2 -> V3: add the Reviewed-by tag. V1 -> V2: simplify the patch. security/integrity/integrity_audit.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/security/integrity/integrity_audit.c b/security/integrity/integrity_audit.c index 2922005..0ec5e4c 100644 --- a/security/integrity/integrity_audit.c +++ b/security/integrity/integrity_audit.c @@ -45,6 +45,8 @@ void integrity_audit_message(int audit_msgno, struct inode *inode, return; ab = audit_log_start(audit_context(), GFP_KERNEL, audit_msgno); + if (!ab) + return; audit_log_format(ab, "pid=%d uid=%u auid=%u ses=%u", task_pid_nr(current), from_kuid(&init_user_ns, current_uid()), --
