commit 7bee5c0fd2b25d185650cbfa049823e03f648c09
author Randy Dunlap <rdunlap@xenotime.net> Mon Apr 10 22:53:11 2006 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> Tue Apr 11 06:18:33 2006 -0700
tree f0937f3d2ce67cee54ad8a81d7a6628e21d8e955
parent 6cf272acd59e4e7a17b969adcdf413e15754bfe4

[PATCH] i386: print EIP/ESP last

Print summary registers (EIP and SS:ESP only) as last death info.  This
makes this important data visible in case it had scrolled off the top of
the display.  Similar to what x86_64 does.  Suggested by Andi Kleen.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/i386/kernel/traps.c

diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c
index e385279..2d22f57 100644
--- a/arch/i386/kernel/traps.c
+++ b/arch/i386/kernel/traps.c
@@ -365,6 +365,9 @@
 
 	if (++die.lock_owner_depth < 3) {
 		int nl = 0;
+		unsigned long esp;
+		unsigned short ss;
+
 		handle_BUG(regs);
 		printk(KERN_EMERG "%s: %04lx [#%d]\n", str, err & 0xffff, ++die_counter);
 #ifdef CONFIG_PREEMPT
@@ -387,8 +390,19 @@
 			printk("\n");
 		if (notify_die(DIE_OOPS, str, regs, err,
 					current->thread.trap_no, SIGSEGV) !=
-				NOTIFY_STOP)
+				NOTIFY_STOP) {
 			show_registers(regs);
+			/* Executive summary in case the oops scrolled away */
+			esp = (unsigned long) (&regs->esp);
+			savesegment(ss, ss);
+			if (user_mode(regs)) {
+				esp = regs->esp;
+				ss = regs->xss & 0xffff;
+			}
+			printk(KERN_EMERG "EIP: [<%08lx>] ", regs->eip);
+			print_symbol("%s", regs->eip);
+			printk(" SS:ESP %04x:%08lx\n", ss, esp);
+		}
 		else
 			regs = NULL;
   	} else