linux-kernel - [LKP] [x86] ad7a085ec2a: BUG: unable to handle kernel paging request at 0000000000080000

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Date:	Wed, 15 Apr 2015 19:13:14 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	Andi Kleen <ak@...ux.intel.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org>
Subject: [LKP] [x86] ad7a085ec2a: BUG: unable to handle kernel paging
 request at 0000000000080000

FYI, we noticed the below changes on

git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc.git x86/fsgs-4
commit ad7a085ec2a306924d317d281e8cd31a6d54b4e9 ("fixup! x86: Add support for rd/wr fs/gs base")


+------------------------------------------+------------+------------+
|                                          | 0ac0fabcd7 | ad7a085ec2 |
+------------------------------------------+------------+------------+
| boot_successes                           | 0          | 0          |
| boot_failures                            | 22         | 21         |
| BUG:kernel_boot_crashed                  | 22         | 9          |
| BUG:unable_to_handle_kernel              | 0          | 12         |
| Oops                                     | 0          | 12         |
| Kernel_panic-not_syncing:Fatal_exception | 0          | 12         |
| backtrace:native_smp_cpus_done           | 0          | 10         |
| backtrace:smp_init                       | 0          | 10         |
| backtrace:kernel_init_freeable           | 0          | 10         |
+------------------------------------------+------------+------------+


[    0.130317] --------------------
[    0.130840]   remote IPI:  ok  |
[    0.131499]    local IPI:
[    0.131826] BUG: unable to handle kernel paging request at 0000000000080000
[    0.132000] IP: [<0000000000080000>] 0x80000
[    0.132000] PGD 0 
[    0.132000] Oops: 0010 [#1] SMP DEBUG_PAGEALLOC 
[    0.132000] Modules linked in:
[    0.132000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.0.0-wl-01084-gf699bc4 #7
[    0.132000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
[    0.132000] task: ffff880021028010 ti: ffff88002102c000 task.ti: ffff88002102c000
[    0.132000] RIP: 0010:[<0000000000080000>]  [<0000000000080000>] 0x80000
[    0.132000] RSP: 0000:ffff880023605ef8  EFLAGS: 00010086
[    0.132000] RAX: 0000000023600000 RBX: 0000000000000000 RCX: 00000000c0000101
[    0.132000] RDX: 00000000ffff8800 RSI: 0000000000000400 RDI: 0000000000000830
[    0.132000] RBP: ffff88002102fdc8 R08: 0000000000000000 R09: ffffffff845133c8
[    0.132000] R10: 0000000000000000 R11: ffffffff853f6f00 R12: 0000000000000000
[    0.132000] R13: 000000000000a1d6 R14: 0000000000000002 R15: 0000000000080000
[    0.132000] FS:  0000000000000000(0000) GS:ffff880023600000(0000) knlGS:0000000000000000
[    0.132000] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[    0.132000] CR2: 0000000000080000 CR3: 0000000003e14000 CR4: 00000000000006f0
[    0.132000] Stack:
[    0.132000]  0000000000000002 000000000000a1d6 0000000000000000 ffff88002102fdc8
[    0.132000]  0000000000000000 ffffffff853f6f00 0000000000000000 ffffffff845133c8
[    0.132000]  0000000000000000 0000000000000400 0000000000000830 0000000000000000
[    0.132000] Call Trace:
[    0.132000]  <NMI> 
[    0.132000]  [<ffffffff81085192>] ? native_write_msr_safe+0xa/0xe
[    0.132000]  [<ffffffff81085192>] ? native_write_msr_safe+0xa/0xe
[    0.132000]  [<ffffffff81085192>] ? native_write_msr_safe+0xa/0xe
[    0.132000]  <<EOE>> 
[    0.132000]  [<ffffffff8107e965>] paravirt_write_msr+0xf/0x13
[    0.132000]  [<ffffffff8107e9aa>] native_x2apic_icr_write+0x12/0x14
[    0.132000]  [<ffffffff8107eb64>] __x2apic_send_IPI_mask+0xd3/0x10f
[    0.132000]  [<ffffffff8107ec04>] x2apic_send_IPI_mask+0x13/0x15
[    0.132000]  [<ffffffff84406170>] test_nmi_ipi+0x45/0x90
[    0.132000]  [<ffffffff84406253>] local_ipi+0x3d/0x41
[    0.132000]  [<ffffffff84406094>] dotest+0x6/0x69
[    0.132000]  [<ffffffff844062e6>] nmi_selftest+0x8f/0x16d
[    0.132000]  [<ffffffff84401e33>] native_smp_cpus_done+0x1c/0xc6
[    0.132000]  [<ffffffff84413d3b>] smp_init+0x54/0x7c
[    0.132000]  [<ffffffff843ed0d9>] kernel_init_freeable+0x161/0x279
[    0.132000]  [<ffffffff82dac0d6>] ? rest_init+0xca/0xca
[    0.132000]  [<ffffffff82dac0e4>] kernel_init+0xe/0xdf
[    0.132000]  [<ffffffff82de1938>] ret_from_fork+0x58/0x90
[    0.132000]  [<ffffffff82dac0d6>] ? rest_init+0xca/0xca
[    0.132000] Code:  Bad RIP value.
[    0.132000] RIP  [<0000000000080000>] 0x80000
[    0.132000]  RSP <ffff880023605ef8>
[    0.132000] CR2: 0000000000080000
[    0.132000] ---[ end trace a1ec8480cd17ab1b ]---
[    0.132000] Kernel panic - not syncing: Fatal exception



Thanks,
Ying Huang


View attachment "config-4.0.0-rc7-00007-gad7a085" of type "text/plain" (141767 bytes)

View attachment ".dmesg" of type "text/plain" (40818 bytes)

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