Hello Avi,
I had an kernel OOPS that morning with RHEL_5_ it isn't reproducable.
Apr 18 08:57:42 thinkpad kernel: BUG: unable to handle kernel NULL pointer
dereference at virtual address 00000024
Apr 18 08:57:42 thinkpad kernel: printing eip:
Apr 18 08:57:42 thinkpad kernel: 78351d8c
Apr 18 08:57:42 thinkpad kernel: *pde = 00000000
Apr 18 08:57:42 thinkpad kernel: Oops: 0000 [#1]
Apr 18 08:57:42 thinkpad kernel: SMP
Apr 18 08:57:42 thinkpad kernel: Modules linked in: fglrx(P) pcmcia ehci_hcd
i2c_i801 uhci_hcd intel_agp yenta_socket rsrc_nonstatic pcmcia_core i2c_core
psmouse e1000 agpgart usbcore evdev
Apr 18 08:57:42 thinkpad kernel: CPU: 0
Apr 18 08:57:42 thinkpad kernel: EIP: 0060:[<78351d8c>] Tainted: P
VLI
Apr 18 08:57:42 thinkpad kernel: EFLAGS: 00210286 (2.6.21-rc6 #17)
Apr 18 08:57:42 thinkpad kernel: EIP is at mmu_page_remove_parent_pte+0xc/0xf0
Apr 18 08:57:42 thinkpad kernel: eax: f08a8498 ebx: 0811da9d ecx: f0df0000
edx: 00000000
Apr 18 08:57:42 thinkpad kernel: esi: 0811da9d edi: f0df0000 ebp: 00000000
esp: f0887b48
Apr 18 08:57:42 thinkpad kernel: ds: 007b es: 007b fs: 00d8 gs: 0033 ss:
0068
Apr 18 08:57:42 thinkpad kernel: Process qemu (pid: 4152, ti=f0886000
task=7a1d8570 task.ti=f0886000)
Apr 18 08:57:42 thinkpad kernel: Stack: f08a8498 0811da9d 0811da9d f0df0000
f08a8a34 783521fb f08a8498 00037b06
Apr 18 08:57:42 thinkpad kernel: f08a9b7c 00000fff 00000000 00000000
00000ff8 00000001 00037b06 00000000
Apr 18 08:57:42 thinkpad kernel: f08a8498 7834e716 00000001 37b06fff
00000000 797e59a0 00000000 00000000
Apr 18 08:57:42 thinkpad kernel: Call Trace:
Apr 18 08:57:42 thinkpad kernel: [<783521fb>] kvm_mmu_pre_write+0x12b/0x200
Apr 18 08:57:42 thinkpad kernel: [<7834e716>]
emulator_write_emulated+0x106/0x180
Apr 18 08:57:42 thinkpad kernel: [<7835673f>] x86_emulate_memop+0x17df/0x3120
Apr 18 08:57:42 thinkpad kernel: [<7834ddfc>] gfn_to_page+0x1c/0x40
Apr 18 08:57:42 thinkpad kernel: [<783531a9>] paging32_walk_addr+0x229/0x2e0
Apr 18 08:57:42 thinkpad kernel: [<7834ddfc>] gfn_to_page+0x1c/0x40
Apr 18 08:57:42 thinkpad kernel: [<78352576>] gpa_to_hpa+0x36/0xc0
Apr 18 08:57:42 thinkpad kernel: [<78350719>] emulate_instruction+0x109/0x230
Apr 18 08:57:42 thinkpad kernel: [<78351853>] kvm_setup_pio+0x1e3/0x220
Apr 18 08:57:42 thinkpad kernel: [<7835a8cb>] handle_exception+0x1db/0x240
Apr 18 08:57:42 thinkpad kernel: [<78359cbb>] kvm_vmx_return+0x119/0x53e
Apr 18 08:57:42 thinkpad kernel: [<78351151>] kvm_vcpu_ioctl+0x911/0xd30
Apr 18 08:57:42 thinkpad kernel: [<781362fd>] __sigqueue_alloc+0x2d/0x80
Apr 18 08:57:42 thinkpad kernel: [<7813691b>] __group_send_sig_info+0x6b/0x90
Apr 18 08:57:42 thinkpad kernel: [<78124441>] __activate_task+0x21/0x40
Apr 18 08:57:42 thinkpad kernel: [<781267a1>] try_to_wake_up+0x41/0x3c0
Apr 18 08:57:42 thinkpad kernel: [<78186057>] touch_atime+0x87/0x130
Apr 18 08:57:42 thinkpad kernel: [<7815543a>]
do_generic_mapping_read+0x3ca/0x4e0
Apr 18 08:57:42 thinkpad kernel: [<7817f23d>] core_sys_select+0x22d/0x2c0
Apr 18 08:57:42 thinkpad kernel: [<7810956e>] convert_fxsr_to_user+0xde/0x180
Apr 18 08:57:42 thinkpad kernel: [<781099a8>] save_i387+0x138/0x160
Apr 18 08:57:42 thinkpad kernel: [<781033e4>] setup_sigcontext+0x104/0x1b0
Apr 18 08:57:42 thinkpad kernel: [<781360c6>] __dequeue_signal+0x126/0x190
Apr 18 08:57:42 thinkpad kernel: [<78103b4a>] do_notify_resume+0x43a/0x6f0
Apr 18 08:57:42 thinkpad kernel: [<78350840>] kvm_vcpu_ioctl+0x0/0xd30
Apr 18 08:57:42 thinkpad kernel: [<7817ddeb>] do_ioctl+0x2b/0x90
Apr 18 08:57:42 thinkpad kernel: [<7817deac>] vfs_ioctl+0x5c/0x2a0
Apr 18 08:57:42 thinkpad kernel: [<7817e12d>] sys_ioctl+0x3d/0x70
Apr 18 08:57:42 thinkpad kernel: [<78104174>] syscall_call+0x7/0xb
Apr 18 08:57:42 thinkpad kernel: =======================
Apr 18 08:57:42 thinkpad kernel: Code: 10 85 c0 74 08 83 c8 01 89 45 0c eb d8
8b 02 89 45 0c eb d1 8d 74 26 00 8d bc 27 00 00 00 00 55 89 d5 57 56 53 83 ec
04 89 04 24 <8b> 7a 24 85 ff 0f 84 c9 00 00 00 8b 52 2c 85 d2 0f 84 b6 00 00
Apr 18 08:57:42 thinkpad kernel: EIP: [<78351d8c>]
mmu_page_remove_parent_pte+0xc/0xf0 SS:ESP 0068:f0887b48
Apr 18 08:58:14 thinkpad kernel: SysRq : Emergency Sync
Apr 18 08:58:14 thinkpad kernel: Emergency Sync complete
Apr 18 08:58:15 thinkpad kernel: SysRq : Emergency Remount R/O
But I saw it a few times. Can you push your other fix upstream please?
Thanks,
Thomas
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