Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | Re: 2.6.17-rc2-mm1 | Date | Mon, 1 May 2006 20:34:26 +0200 |
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On Monday 01 May 2006 16:24, Martin J. Bligh wrote:
> double fault: 0000 [1] SMP > last sysfs file: /devices/pci0000:00/0000:00:06.0/resource > CPU 0 > Modules linked in: > Pid: 20519, comm: mtest01 Not tainted 2.6.17-rc3-mm1-autokern1 #1 > RIP: 0010:[<ffffffff8047c8b8>] <ffffffff8047c8b8>{__sched_text_start+1856} > RSP: 0000:0000000000000000 EFLAGS: 00010082 > RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff805d9438 > RDX: ffff8100db12c0d0 RSI: ffffffff805d9438 RDI: ffff8100db12c0d0 > RBP: ffffffff805d9438 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 > R13: ffff8100e39bd440 R14: ffff810008003620 R15: 000002b02751726c > FS: 0000000000000000(0000) GS:ffffffff805fa000(0063) knlGS:00000000f7dd0460 > CS: 0010 DS: 002b ES: 002b CR0: 000000008005003b > CR2: fffffffffffffff8 CR3: 00000000da399000 CR4: 00000000000006e0 > Process mtest01 (pid: 20519, threadinfo ffff8100b1bb4000, task > ffff8100db12c0d0) > Stack: ffffffff80579e20 ffff8100db12c0d0 0000000000000001 ffffffff80579f58 > 0000000000000000 ffffffff80579e78 ffffffff8020b0b2 ffffffff80579f58 > 0000000000000000 ffffffff80485520 > Call Trace: <#DF> <ffffffff8020b0b2>{show_registers+140} > <ffffffff8020b357>{__die+159} <ffffffff8020b3cc>{die+50} > <ffffffff8020bba6>{do_double_fault+115} > <ffffffff8020aa91>{double_fault+125} > <ffffffff8047c8b8>{__sched_text_start+1856} <EOE>
That's really strange - i wonder why the backtracer can't find the original stack. Should probably add some printk diagnosis here.
Can you send the output with this patch?
Index: linux/arch/x86_64/kernel/traps.c =================================================================== --- linux.orig/arch/x86_64/kernel/traps.c +++ linux/arch/x86_64/kernel/traps.c @@ -238,6 +238,7 @@ void show_trace(unsigned long *stack) HANDLE_STACK (stack < estack_end); i += printk(" <EOE>"); stack = (unsigned long *) estack_end[-2]; + printk("new stack %lx (%lx %lx %lx %lx %lx)\n", stack, estack_end[0], estack_end[-1], estack_end[-2], estack_end[-3], estack_end[-4]); continue; } if (irqstack_end) { - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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