From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 27052] Module KVM : unable to handle kernel NULL pointer
dereference at
Date: Fri, 28 Jan 2011 06:58:07 GMT
Message-ID: <201101280658.p0S6w7UG019090@demeter1.kernel.org>
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--- Comment #16 from prochazka 2011-01-2=
8 06:58:03 ---
Et voil=C3=A0 :=20
Jan 28 01:28:18 bergson25412 rmap_remove: ffff88011ce3fff8 1->BUG
Jan 28 01:28:18 bergson25412 ------------[ cut here ]------------
Jan 28 01:28:18 bergson25412 kernel BUG at arch/x86/kvm/mmu.c:701!
Jan 28 01:28:18 bergson25412 invalid opcode: 0000 [#1] SMP
Jan 28 01:28:18 bergson25412 last sysfs file:
/sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map
Jan 28 01:28:18 bergson25412 CPU 3
Jan 28 01:28:18 bergson25412 Modules linked in: kvm_intel kvm
Jan 28 01:28:18 bergson25412
Jan 28 01:28:18 bergson25412 Pid: 14479, comm: qemu Not tainted 2.6.37 =
#3
MS-9192-01S/Express5800/120Rh-1 [N8100-xxxxF]
Jan 28 01:28:18 bergson25412 RIP: 0010:[]=20
[] drop_spte+0x1d9/0x220 [kvm]
Jan 28 01:28:18 bergson25412 RSP: 0018:ffff880186bb7a08 EFLAGS: 000102=
92
Jan 28 01:28:18 bergson25412 RAX: 000000000000002c RBX: ffff88011ce3fff=
8 RCX:
000000000003ffff
Jan 28 01:28:18 bergson25412 RDX: ffffffff81d970c8 RSI: 000000000000008=
2 RDI:
0000000000000246
Jan 28 01:28:18 bergson25412 RBP: ffff880186bb7a28 R08: 000000000000e95=
8 R09:
0000000000000000
Jan 28 01:28:18 bergson25412 R10: 0000000000000000 R11: 000000000000000=
f R12:
ffff8801c5b8bf00
Jan 28 01:28:18 bergson25412 R13: ffff880186d6c000 R14: 0000000000007a0=
3 R15:
ffff880186bb7a84
Jan 28 01:28:18 bergson25412 FS: 00007f8e0fc6d710(0000)
GS:ffff8800cfcc0000(0000) knlGS:0000000000000000
Jan 28 01:28:18 bergson25412 CS: 0010 DS: 002b ES: 002b CR0: 000000008=
005003b
Jan 28 01:28:18 bergson25412 CR2: 00000000000c72ed CR3: 00000001aa8ff00=
0 CR4:
00000000000026e0
Jan 28 01:28:18 bergson25412 DR0: 0000000000000045 DR1: 000000000000000=
0 DR2:
0000000000000000
Jan 28 01:28:18 bergson25412 DR3: 0000000000000005 DR6: 00000000ffff0ff=
0 DR7:
0000000000000400
Jan 28 01:28:18 bergson25412 Process qemu (pid: 14479, threadinfo
ffff880186bb6000, task ffff8801a85fc000)
Jan 28 01:28:18 bergson25412 Stack:
Jan 28 01:28:18 bergson25412 0000000000000ff8 ffff8801c5b8bf00 00000000=
0c820ffc
ffff8801973cb490
Jan 28 01:28:18 bergson25412 ffff880186bb7ab8 ffffffffa00210a5 00000000=
00000001
000000000000c830
Jan 28 01:28:18 bergson25412 00000000003e6830 0000000000000001 00000000=
00000000
ffffea0000000001
Jan 28 01:28:18 bergson25412 Call Trace:
Jan 28 01:28:18 bergson25412 [] paging32_sync_page+0x=
e5/0x1c0
[kvm]
Jan 28 01:28:18 bergson25412 [] __kvm_sync_page+0x5a/=
0xb0
[kvm]
Jan 28 01:28:18 bergson25412 [] mmu_sync_children+0x2=
49/0x350
[kvm]
Jan 28 01:28:18 bergson25412 [] ? seg_base+0x1a/0x30 =
[kvm]
Jan 28 01:28:18 bergson25412 [] ? mmu_free_roots+0xc2=
/0x180
[kvm]
Jan 28 01:28:18 bergson25412 [] ?
kvm_mmu_get_page+0x4b5/0x710 [kvm]
Jan 28 01:28:18 bergson25412 [] mmu_sync_roots+0xc8/0=
x160
[kvm]
Jan 28 01:28:18 bergson25412 [] kvm_mmu_load+0x80/0x4=
20 [kvm]
Jan 28 01:28:18 bergson25412 []
kvm_arch_vcpu_ioctl_run+0xc95/0xe20 [kvm]
Jan 28 01:28:18 bergson25412 [] ?
kvm_arch_vcpu_load+0x50/0x140 [kvm]
Jan 28 01:28:18 bergson25412 [] kvm_vcpu_ioctl+0x561/=
0x860
[kvm]
Jan 28 01:28:18 bergson25412 [] do_vfs_ioctl+0xa7/0x5=
60
Jan 28 01:28:18 bergson25412 [] ? fput+0x29/0x280
Jan 28 01:28:18 bergson25412 [] ? sys_futex+0xce/0x17=
0
Jan 28 01:28:18 bergson25412 [] sys_ioctl+0x4f/0x80
Jan 28 01:28:18 bergson25412 []
system_call_fastpath+0x16/0x1b
Jan 28 01:28:18 bergson25412 Code: 48 89 10 eb c4 48 89 de 48 c7 c7 08 =
93 03 a0
31 c0 e8 2f 20 99 e1 0f 0b eb fe 48 89 de 48 c
7 c7 de ab 03 a0 31 c0 e8 1a 20 99 e1 <0f> 0b eb fe 41 0f b6 4c 24 28 4=
c 89 f6
83 e1 0f 48 89 da 48 c7
Jan 28 01:28:18 bergson25412 RIP [] drop_spte+0x1d9/=
0x220
[kvm]
Jan 28 01:28:18 bergson25412 RSP
Jan 28 01:28:18 bergson25412 ---[ end trace ca5feff4c31aee0f ]---
Regards,=20
Nicolas
--=20
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