Re: [Qemu-devel] [Bug 1463143] [NEW] Kernel Panic on Guest VM

[Stefan Hajnoczi]

On Mon, Jun 08, 2015 at 07:13:56PM -0000, ryan wrote:
> Public bug reported:
> 
> Hi,
> 
> I've recently attempted to move a stack to qemu vm's that I have run
> successfully on both hard metal and ec2.
> 
> I'm not sure where to even begin debugging, could someone please point
> me in the right direction?
> 
> 
>   [781785.483343] RIP: 0010:[<ffffffff81511830>]  [<ffffffff81511830>] 
> ata_sff_hsm_move+0x1b0/0x780
> [781785.483345] RSP: 0000:ffff88007fd03dd0  EFLAGS: 00010097
> [781785.483346] RAX: 0000000000000000 RBX: ffff8800374d0000 RCX: 
> 0000000000000050
> [781785.483347] RDX: 0000000000000006 RSI: ffff8800374d0158 RDI: 
> ffff8800374d0000
> [781785.483348] RBP: ffff88007fd03e20 R08: 0000000000000086 R09: 
> ffff88007cc00000
> [781785.483349] R10: 0000000000000011 R11: 000000000000000b R12: 
> ffff8800374d0158
> [781785.483350] R13: 0000000000000000 R14: ffff8800374d0158 R15: 
> ffff8800374d0208
> [781785.483356] FS:  00007f3882e75700(0000) GS:ffff88007fd00000(0000) 
> knlGS:0000000000000000
> [781785.483357] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [781785.483358] CR2: 00007f37df39a000 CR3: 000000000b7a5000 CR4: 
> 00000000000006e0
> [781785.483369] Stack:
> [781785.483373]  ffff8800373cb000 ffff88007fd03e60 ffffffff8108d7d2 
> ffff88007fd03e28
> [781785.483375]  ffff8800374d2140 ffff8800374d0000 ffff8800374d0158 
> 0000000000000000
> [781785.483378]  0000000000000050 0000000000000000 ffff88007fd03e50 
> ffffffff81511e96
> [781785.483378] Call Trace:
> [781785.483382]  <IRQ> 
> [781785.483396]  [<ffffffff8108d7d2>] ? run_posix_cpu_timers+0x42/0x5c0
> [781785.483400]  [<ffffffff81511e96>] __ata_sff_port_intr+0x96/0x120
> [781785.483403]  [<ffffffff815121ed>] ata_bmdma_port_intr+0x2d/0x120
> [781785.483405]  [<ffffffff81512ba3>] ata_bmdma_interrupt+0x183/0x1e0
> [781785.483414]  [<ffffffff810bf8be>] handle_irq_event_percpu+0x3e/0x1d0
> [781785.483433]  [<ffffffff810bfa8d>] handle_irq_event+0x3d/0x60
> [781785.483437]  [<ffffffff810c2517>] handle_edge_irq+0x77/0x130
> [781785.483455]  [<ffffffff81015cde>] handle_irq+0x1e/0x30
> [781785.483472]  [<ffffffff817312cd>] do_IRQ+0x4d/0xc0
> [781785.483476]  [<ffffffff81726a6d>] common_interrupt+0x6d/0x6d
> [781785.483478]  <EOI> 
> [781785.483480]  [<ffffffff8172efad>] ? system_call_fastpath+0x1a/0x1f
> [781785.483498] Code: f9 ff ff 41 0f b6 46 28 3c 06 0f 84 0b 03 00 00 3c 07 
> 0f 84 e3 02 00 00 3c 05 0f 84 c3 02 00 00 0f 0b 66 0f 1f 84 00 00 00 00 00 
> <0f> 0b 66 0f 1f 44 00 00 f6 c1 08 0f 84 19 05 00 00 f6 c1 21 0f 
> [781785.483501] RIP  [<ffffffff81511830>] ata_sff_hsm_move+0x1b0/0x780
> [781785.483501]  RSP <ffff88007fd03dd0>
> [781785.484009] ---[ end trace 1b6ef3497a5641b3 ]---
> [781785.484009] Kernel panic - not syncing: Fatal exception in interrupt
> [781785.484009] Shutting down cpus with NMI

Please post your QEMU command-line.

For best performance with a raw disk image file on local storage use:
  -drive 
if=none,file=path/to/disk.img,format=raw,aio=native,cache=none,id=drive0 
-device virtio-blk-pci,drive=drive0

That may also work around this ATA issue.

Stefan

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