X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fsignal.c;h=39d122753bac93eb7cfa62d0f2e2e451a4908dd5;hb=ed54fcfd785e8fecfbd8b129466235fc4ab0a402;hp=f9405609774eadc4115006e8f80f418413d84217;hpb=f436ab43614f105a4685c976a85a171bc112c802;p=linux-2.6-omap-h63xx.git

diff --git a/kernel/signal.c b/kernel/signal.c
index f9405609774..39d122753ba 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -718,6 +718,37 @@ out_set:
 #define LEGACY_QUEUE(sigptr, sig) \
 	(((sig) < SIGRTMIN) && sigismember(&(sigptr)->signal, (sig)))
 
+int print_fatal_signals;
+
+static void print_fatal_signal(struct pt_regs *regs, int signr)
+{
+	printk("%s/%d: potentially unexpected fatal signal %d.\n",
+		current->comm, current->pid, signr);
+
+#ifdef __i386__
+	printk("code at %08lx: ", regs->eip);
+	{
+		int i;
+		for (i = 0; i < 16; i++) {
+			unsigned char insn;
+
+			__get_user(insn, (unsigned char *)(regs->eip + i));
+			printk("%02x ", insn);
+		}
+	}
+#endif
+	printk("\n");
+	show_regs(regs);
+}
+
+static int __init setup_print_fatal_signals(char *str)
+{
+	get_option (&str, &print_fatal_signals);
+
+	return 1;
+}
+
+__setup("print-fatal-signals=", setup_print_fatal_signals);
 
 static int
 specific_send_sig_info(int sig, struct siginfo *info, struct task_struct *t)
@@ -1855,6 +1886,8 @@ relock:
 		 * Anything else is fatal, maybe with a core dump.
 		 */
 		current->flags |= PF_SIGNALED;
+		if ((signr != SIGKILL) && print_fatal_signals)
+			print_fatal_signal(regs, signr);
 		if (sig_kernel_coredump(signr)) {
 			/*
 			 * If it was able to dump core, this kills all