Messages in this thread | | | Date | Fri, 22 Aug 2008 11:34:52 -0400 | From | Mathieu Desnoyers <> | Subject | Re: 2.6.{26.2,27-rc} oops on virtualbox |
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* Luiz Fernando N. Capitulino (lcapitulino@mandriva.com.br) wrote: > Em Fri, 22 Aug 2008 08:50:12 +0200 > Ingo Molnar <mingo@elte.hu> escreveu: > > | > | * H. Peter Anvin <hpa@zytor.com> wrote: > | > | > H. Peter Anvin wrote: > | >>> > | >>> Does this look like a kernel bug? > | >>> > | >> > | >> No, it looks like a very common virtualizer bug. Does the attached > | >> patch work for you? > | >> > | > > | > Also, in addition to this, please try tip:master. There is a patch in > | > tip:master which I hope should fix this problem, but the details are > | > important. > | > | access coordinates would be at: > | > | http://people.redhat.com/mingo/tip.git/README > > As I already have Linus tree downloaded I have cloned it in > the usual way. > > Got the same results: OOPS in virtualbox but it works on QEMU. > > The OOPS's output follows and I have attached the .config I'm using > to reproduce the problem. >
Can you try booting with the kernel argument : debug_alternative
The dmesg of the kernel bootup up to the oops would be helpful.
My guess is that there may be something wrong with irq disabling which protects text_poke_early in apply_alternatives().
Mathieu
> """ > BUG: unable to handle kernel NULL pointer dereference at 00000246 > IP: [<c01310f1>] vprintk+0x181/0x440 > *pde = 00000000 > Oops: 0002 [#1] SMP > Modules linked in: > > Pid: 1, comm: swapper Not tainted (2.6.27-rc4-test24-tip #3) > EIP: 0060:[<c01310f1>] EFLAGS: 00010246 CPU: 0 > EIP is at vprintk+0x181/0x440 > EAX: 00000246 EBX: 00000000 ECX: c0130ca9 EDX: 0000dedd > ESI: c0474ae3 EDI: c04cf6bc EBP: c7435f24 ESP: c7435eb0 > DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0069 > Process swapper (pid: 1, ti=c7434000 task=c7438000 task.ti=c7434000) > Stack: 0000dedd c0130ca9 c7435f40 00000000 a026104f a026106c c7434000 c7435ee6 > 00000006 00000246 00000000 a0260cf3 0000001c c7434000 00000282 00000046 > c11a85a0 c7435efc c0135c6f c7435f14 c0115fcb a0296e91 c0104c2c 00000000 > Call Trace: > [<c0130ca9>] ? release_console_sem+0x199/0x1e0 > [<c0135c6f>] ? irq_exit+0x3f/0x90 > [<c0115fcb>] ? smp_apic_timer_interrupt+0x5b/0x90 > [<c0104c2c>] ? apic_timer_interrupt+0x28/0x30 > [<c0474ae3>] ? net_ns_init+0x0/0x1ad > [<c0474ae3>] ? net_ns_init+0x0/0x1ad > [<c0346ed9>] ? printk+0x18/0x1f > [<c0474b00>] ? net_ns_init+0x1d/0x1ad > [<c0474ae3>] ? net_ns_init+0x0/0x1ad > [<c0101116>] ? do_one_initcall+0x26/0x170 > [<c0128f66>] ? try_to_wake_up+0xc6/0x240 > [<c012910f>] ? wake_up_process+0xf/0x20 > [<c014192d>] ? start_workqueue_thread+0x1d/0x20 > [<c0141d4b>] ? __create_workqueue_key+0x1eb/0x240 > [<c0141820>] ? worker_thread+0x0/0xf0 > [<c044b387>] ? kernel_init+0x141/0x214 > [<c044b246>] ? kernel_init+0x0/0x214 > [<c0104dc7>] ? kernel_thread_helper+0x7/0x10 > ======================= > Code: c0 0f 84 0b 01 00 00 b8 50 f1 41 c0 c7 05 ec f1 41 c0 ff ff ff ff e8 cf 8b 21 00 e8 ea 04 02 00 8b 45 b0 50 9d 0f 1f 84 00 00 00 <00> 00 8b 45 bc 83 c4 60 5b 5e 5f 5d c3 66 90 a1 ec f1 41 c0 e8 > EIP: [<c01310f1>] vprintk+0x181/0x440 SS:ESP 0069:c7435eb0 > ---[ end trace 4eaa2a86a8e2da22 ]--- > """ > > -- > Luiz Fernando N. Capitulino
-- Mathieu Desnoyers OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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