irqfd issue

Asias He
2013-05-07T01:37:33Z

Hi,

I am seeing this with linus/master. Any ideas?

[ 34.168356] IPv6: ADDRCONF(NETDEV_UP): virbr0: link is not ready
[ 36.743758] BUG: unable to handle kernel paging request at 0000000300000029
[ 36.745177] IP: [<ffffffff81c08584>] __mutex_lock_slowpath+0x34/0x240
[ 36.746576] PGD 0
[ 36.747962] Oops: 0000 [#1] SMP
[ 36.749343] Modules linked in: ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat vhost_net vhost
[ 36.750753] CPU: 0 PID: 4260 Comm: qemu-kvm Not tainted 3.9.0+ #752
[ 36.752130] Hardware name: Dell Inc. OptiPlex 790/0V5HMK, BIOS A11 12/30/2011
[ 36.753495] task: ffff88021fba8000 ti: ffff88021f0c4000 task.ti: ffff88021f0c4000
[ 36.754847] RIP: 0010:[<ffffffff81c08584>] [<ffffffff81c08584>] __mutex_lock_slowpath+0x34/0x240
[ 36.756228] RSP: 0018:ffff88021f0c5c88 EFLAGS: 00010202
[ 36.757584] RAX: 0000000000000001 RBX: ffff880223ffb420 RCX: 0000000000000000
[ 36.758926] RDX: 0000000300000001 RSI: ffff88021f0c5d60 RDI: ffff880223ffb420
[ 36.760268] RBP: ffff88021f0c5cf8 R08: ffff88021f0c0000 R09: ffffffff00000000
[ 36.761602] R10: ffff8802209c3f10 R11: 0000000000000000 R12: ffff880223ffb420
[ 36.762924] R13: ffff88022236c000 R14: ffff8802236213b0 R15: ffff880223ffb420
[ 36.764232] FS: 0000000000000000(0000) GS:ffff88022dc00000(0000) knlGS:0000000000000000
[ 36.765543] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 36.766869] CR2: 0000000300000029 CR3: 000000000240b000 CR4: 00000000000427f0
[ 36.768220] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 36.769565] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 36.770889] Stack:
[ 36.772200] 0000000000000092 ffff88021fba8000 ffff88021f0c5cb8 ffffffff81c0b2c7
[ 36.773551] ffff8802210a4fc0 ffff8802210a4fc0 ffff88021f0c5d08 ffffffff810c0f2c
[ 36.774884] 000000000000000e ffff880223ffb420 ffff88021f0c5d38 ffff88022236c000
[ 36.776194] Call Trace:
[ 36.777482] [<ffffffff81c0b2c7>] ? _raw_spin_unlock_irqrestore+0x37/0x40
[ 36.778789] [<ffffffff810c0f2c>] ? try_to_wake_up+0x1ec/0x290
[ 36.780107] [<ffffffff81c0852b>] mutex_lock+0x2b/0x50
[ 36.781420] [<ffffffff810a9b6d>] flush_workqueue+0x9d/0x560
[ 36.782729] [<ffffffff8100933f>] kvm_irqfd_release+0x8f/0xa0
[ 36.784046] [<ffffffff8100456d>] kvm_vm_release+0x1d/0x30
[ 36.785367] [<ffffffff811a732a>] __fput+0xba/0x240
[ 36.786693] [<ffffffff811a751e>] ____fput+0xe/0x10
[ 36.788007] [<ffffffff810af685>] task_work_run+0xa5/0xe0
[ 36.789317] [<ffffffff81092cd7>] do_exit+0x2d7/0xac0
[ 36.790622] [<ffffffff811a4a04>] ? fsnotify_modify+0x64/0x80
[ 36.791896] [<ffffffff8140327a>] ? trace_hardirqs_off_thunk+0x3a/0x6c
[ 36.793141] [<ffffffff81093511>] do_group_exit+0x51/0xc0
[ 36.794358] [<ffffffff81093597>] SyS_exit_group+0x17/0x20
[ 36.795547] [<ffffffff81c13882>] system_call_fastpath+0x16/0x1b
[ 36.796731] Code: 55 41 54 53 48 83 ec 48 66 66 66 66 90 65 48 8b 04 25 00 b8 00 00 49 89 fc 48 89 45 98 48 8b 57 18 b8 01 00 00 00 48 85 d2 74 03 <8b> 42 28 85 c0 0f 84 e6 00 00 00 65 48 8b 04 25 08 b8 00 00 48
[ 36.798194] RIP [<ffffffff81c08584>] __mutex_lock_slowpath+0x34/0x240
[ 36.799567] RSP <ffff88021f0c5c88>
[ 36.800943] CR2: 0000000300000029
[ 36.813185] ---[ end trace 4877613defb9fc19 ]---
[ 36.813188] Fixing recursive fault but reboot is needed!
[ 37.011566] usb 2-1.1: link qh8-0601/ffff880223a9c600 start 3 [1/2 us]
[ 70.539341] usb usb1: usb port1's DeviceRemovable is changed to 1 according to platform information.
[ 70.539546] usb usb2: usb port1's DeviceRemovable is changed to 1 according to platform information.
[ 70.862490] nr_pdflush_threads exported in /proc is scheduled for removal
[ 70.862558] sysctl: The scan_unevictable_pages sysctl/node-interface has been disabled for lack of a legitimate use case. If you have one, please send an email to linux-mm@kvack.org.

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Asias