[PATCH] emit logging when a process receives a fatal signal

Folkert van Heusden
2006-11-18T01:09:50Z

Hi,

I found that sometimes processes disappear on some heavily used system
of mine without any logging. So I've written a patch against 2.6.18.2
which emits logging when a process emits a fatal signal.

Signed-off-by: Folkert van Heusden <folkert@vanheusden.com>

--- linux-2.6.18.2/kernel/signal.c 2006-11-04 02:33:58.000000000 +0100
+++ linux-2.6.18.2.new/kernel/signal.c 2006-11-17 15:59:13.000000000 +0100
@@ -706,6 +706,15 @@
struct sigqueue * q = NULL;
int ret = 0;

+ if (sig == SIGQUIT || sig == SIGILL || sig == SIGTRAP ||
+ sig == SIGABRT || sig == SIGBUS || sig == SIGFPE ||
+ sig == SIGSEGV || sig == SIGXCPU || sig == SIGXFSZ ||
+ sig == SIGSYS || sig == SIGSTKFLT)
+ {
+ printk(KERN_WARNING "Sig %d send to %d owned by %d.%d (%s)\n",
+ sig, t -> pid, t -> uid, t -> gid, t -> comm);
+ }
+
/*
* fast-pathed signals for kernel-internal things like SIGSTOP
* or SIGKILL.

Folkert van Heusden

www.vanheusden.com/multitail - multitail is tail on steroids. multiple
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