Re: [Xen-devel] kernel BUG at mm/page_alloc.c:424!

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Tue, Aug 04, 2009 at 07:38:10PM -0500, Nathan Stratton wrote:
>
> [root@cbridge1 etc]# ------------[ cut here ]------------
> kernel BUG at mm/page_alloc.c:424!
> invalid opcode: 0000 [#1] SMP
> last sysfs file: /sys/devices/vif-0/net/eth0/tx_queue_len
> CPU 2
> Modules linked in: ipv6 joydev pcspkr xen_netfront xen_blkfront [last 
> unloaded: scsi_wait_scan]
> Pid: 1182, comm: texgrid Tainted: G        W  2.6.29.4-167.fc11.x86_64 #1
> RIP: e030:[<ffffffff810a2eb1>]  [<ffffffff810a2eb1>]  
> __free_one_page+0x146/0x1e6
> RSP: e02b:ffff88007ddc3a38  EFLAGS: 00010002
> RAX: ffffe2000194d290 RBX: ffffe2000194d2c8 RCX: ffffe2000194d290
> RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff880000008880
> RBP: ffff88007ddc3a88 R08: 000000000000001e R09: 0000000000000006
> R10: 0000000000000000 R11: 0000000000009f20 R12: 0000000000000000
> R13: ffff880000008880 R14: 000000000000029f R15: 0000000000000002
> FS:  00007f8b5cbb8910(0000) GS:ffff88007e84c700(0000) knlGS:0000000000000000
> CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
> CR2: 00007f8b50bb3da8 CR3: 000000007b19d000 CR4: 0000000000002660
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Process texgrid (pid: 1182, threadinfo ffff88007ddc2000, task 
> ffff88007db41700)
> Stack:
>  ffffe2000194d638 0000000000000004 ffffe20001948868 0000000100000018
>  ffff88007e84c590 ffff880000008880 0000000000000002 ffff88007e84c590
>  ffffe2000194d2c8 0000000000000000 ffff88007ddc3ab8 ffffffff810a4187
> Call Trace:
>  [<ffffffff810a4187>] free_pages_bulk.clone.2+0x57/0x72
>  [<ffffffff810a4290>] free_hot_cold_page+0xee/0x130
>  [<ffffffff810a4338>] free_hot_page+0x10/0x12
>  [<ffffffff810a7d49>] put_page+0x91/0x9e
>  [<ffffffff8104df91>] ? _local_bh_enable_ip+0xe5/0xeb
>  [<ffffffff81308c5a>] skb_release_data+0x77/0xce
>  [<ffffffff81308919>] __kfree_skb+0x1e/0x81
>  [<ffffffff813089a9>] consume_skb+0x2d/0x2f
>  [<ffffffff8130b39b>] skb_free_datagram+0x19/0x3f
>  [<ffffffff8135987c>] udp_recvmsg+0x1dc/0x262
>  [<ffffffff8102a181>] ? pvclock_clocksource_read+0x47/0x83
>  [<ffffffff81303f22>] sock_common_recvmsg+0x39/0x4a
>  [<ffffffff8102a181>] ? pvclock_clocksource_read+0x47/0x83
>  [<ffffffff81301e71>] __sock_recvmsg+0x71/0x7d
>  [<ffffffff81302544>] sock_recvmsg+0xcf/0xe8
>  [<ffffffff8102a181>] ? pvclock_clocksource_read+0x47/0x83
>  [<ffffffff8105ca4b>] ? autoremove_wake_function+0x0/0x39
>  [<ffffffff8100e86f>] ? __xen_spin_lock+0xb7/0xcd
>  [<ffffffff8104de90>] ? __local_bh_disable+0xa7/0xaf
>  [<ffffffff8104df91>] ? _local_bh_enable_ip+0xe5/0xeb
>  [<ffffffff8103fe31>] ? __might_sleep+0x2d/0x110
>  [<ffffffff8136092d>] ? inet_ioctl+0xa5/0xa7
>  [<ffffffff81301c74>] ? sock_ioctl+0x1f3/0x216
>  [<ffffffff81301fb5>] ? sockfd_lookup_light+0x20/0x58
>  [<ffffffff813036a1>] sys_recvfrom+0xad/0xf7
>  [<ffffffff8102a181>] ? pvclock_clocksource_read+0x47/0x83
>  [<ffffffff8100dad7>] ? xen_clocksource_read+0x21/0x23
>  [<ffffffff81062f7c>] ? clocksource_read+0xc/0xe
>  [<ffffffff8101133a>] system_call_fastpath+0x16/0x1b
> Code: 10 48 89 d6 48 c1 ee 35 39 f1 75 29 f7 c2 00 00 04 00 74 21 49 63 
> cc 48 39 48 10 75 18 80 e6 40 48 0f 44 c8 8b 51 08 85 d2 74 43 <0f> 0b eb 
> fe 41 83 fc 09 76 a5 49 63 c4 48 89 43 10 0f ba 2b 12
> RIP  [<ffffffff810a2eb1>] __free_one_page+0x146/0x1e6
>  RSP <ffff88007ddc3a38>
> ---[ end trace 7d5f534b65d69935 ]---
>
> Message from syslogd@cbridge1 at Aug  4 11:00:25 ...
>  kernel:------------[ cut here ]------------

How did you accomplish this? Could you be specific on how this occured?
What version of Xen are you using (I presume xen-unstable + 2.6-pvops 
(xen-tip/master))?


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