Commit 3d921563 authored May 15, 2018 by Chetan C R Committed by Gerrit - the friendly Code Review server Jun 20, 2018

audit: Checks valid value of audit_signals and tsk->audit_context



There can be a case when current task's audit context
may be NULL or even if it is not NULL, it can have
invalid non-zero value of dummy variable and also
we should audit the signal only if we have non-zero
value of audit_signals.

Issue has been seen during power on/off tests.
So, better to add explicit check on these variables.

Change-Id: I2f3e17d933fca8e3b8f4013f44f942f11c68f440
Signed-off-by: Chetan C R <cravin@codeaurora.org>

parent eddc683b

kernel/auditsc.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -2252,9 +2252,10 @@ int __audit_signal_info(int sig, struct task_struct *t)
		audit_sig_uid = uid;
		security_task_getsecid(tsk, &audit_sig_sid);
		}
		}

		if (!audit_signals \|\| audit_dummy_context())
		return 0;
		}

		/* optimize the common case by putting first signal recipient directly
		* in audit_context */