From rdunlap@xenotime.net Thu Mar 30 23:05:46 2006 Date: Thu, 30 Mar 2006 23:01:45 -0800 From: Randy.Dunlap To: randy.dunlap@gmail.com Cc: rdunlap@xenotime.net Subject: [PATCH -mm] i386: print EIP/ESP last From: Randy Dunlap 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 --- arch/i386/kernel/traps.c | 16 +++++++++++++++- 1 files changed, 15 insertions(+), 1 deletion(-) --- linux-2616-mm2.orig/arch/i386/kernel/traps.c +++ linux-2616-mm2/arch/i386/kernel/traps.c @@ -398,6 +398,9 @@ void die(const char * str, struct pt_reg 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 @@ -430,8 +433,19 @@ void die(const char * str, struct pt_reg check_remote_debug(0,SIGTRAP,err,regs,) 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) (®s->esp); + savesegment(ss, ss); + if (user_mode(regs)) { + esp = regs->esp; + ss = regs->xss & 0xffff; + } + printk(KERN_EMERG "EIP: [<%08lx>] ", addr); + print_symbol("%s", addr); + printk(" SS:ESP %04x:%08lx\n", ss, esp); + } else regs = NULL; } else ---