The audit system logs the signals that leads to abnormal end of a process.
However , as of now , it always states the reason for failure of a process as
"memory violation" regardless of the signal delivered. This is due to the
audit_core_dumps() function pass the reason for failure blindly to the
audit_log_abend() as "memory violation".
This patch changes the audit_core_dumps() function as to pass on the right
reason to the audit_log_abend based on the signal received.
Signed-off-by:Paul Davies C
---
kernel/auditsc.c | 31 ++++++++++++++++++++++++++++++-
1 file changed, 30 insertions(+), 1 deletion(-)
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 9845cb3..3cafd13 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -2395,7 +2395,36 @@ void audit_core_dumps(long signr)
ab = audit_log_start(NULL, GFP_KERNEL, AUDIT_ANOM_ABEND);
if (unlikely(!ab))
return;
- audit_log_abend(ab, "memory violation", signr);
+
+ /*Identify the reason for failure based on signal delivered.*/
+ switch (signr) {
+ case SIGABRT:
+ audit_log_abend(ab, "received abort", signr);
+ break;
+ case SIGBUS:
+ audit_log_abend(ab, "invalid pointer dereference",
signr);
+ break;
+ case SIGFPE:
+ audit_log_abend(ab, "invalid floating point
instruction", signr);
+ break;
+ case SIGILL:
+ audit_log_abend(ab, "illegal instruction", signr);
+ break;
+ case SIGSEGV:
+ audit_log_abend(ab, "memory violation", signr);
+ break;
+ case SIGTRAP:
+ audit_log_abend(ab, "bad instruction / debugger
generated signal", signr);
+ break;
+ case SIGXCPU:
+ audit_log_abend(ab, "cpu time violation", signr);
+ break;
+ case SIGXFSZ:
+ audit_log_abend(ab, "file size violation", signr);
+ break;
+ default:
+ audit_log_abend(ab, "not defined", signr);
+ }
audit_log_end(ab);
}
--
1.7.9.5
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