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Date: Tue, 24 Jul 2012 13:52:47 -0300
From: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>
To: nicolas prochazka <prochazka.nicolas@gmail.com>
Cc: Dave Jones <davej@redhat.com>, linux-kernel <linux-kernel@vger.kernel.org>,
        David Howells <dhowells@redhat.com>,
        Bobby Powers <bobbypowers@gmail.com>
Subject: Re: oops in kernel ( 3.4.x -> 3.5rc )
Message-ID: <20120724165247.GA18401@oc1711230544.ibm.com>
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On Mon, Jul 23, 2012 at 11:15:09PM +0200, nicolas prochazka wrote:
> Hello,
> I 'm trying differents versions with differents results
> 
> - commit f044db4cb4bf16893812d35b5fbeaaf3e30c9215  : bug is not reproductible
> - 3.5rc7  : bug is reproductible    (cf new dump )
> - master branch  : bug is reproductible
> 
> 
> 
> Regards,
> Nicolas Prochazka
> 
> 

Hi, Nicolas.

Can you try a bisect? I am also copying David Howells and Bobby Powers,
even though their set of patches don't seem to be the culprit.

Regards.
Cascardo.

> Jul 23 21:10:05 positronic18696 BUG: unable to handle kernel paging
> request at 000000010000002f
> Jul 23 21:10:05 positronic18696 IP: [<ffffffff81156900>] dup_fd+0x160/0x2e0
> Jul 23 21:10:05 positronic18696 PGD 6627ea067 PUD 0
> Jul 23 21:10:05 positronic18696 Oops: 0002 [#1] SMP
> Jul 23 21:10:05 positronic18696 CPU 1
> Jul 23 21:10:05 positronic18696 Modules linked in: kvm_intel kvm
> Jul 23 21:10:05 positronic18696
> Jul 23 21:10:05 positronic18696 Pid: 17596, comm: queue.sh Not tainted
> 3.5.0-rc7-dirty #6 Dell Inc. PowerEdge M600/0MY736
> Jul 23 21:10:05 positronic18696 RIP: 0010:[<ffffffff81156900>]
> [<ffffffff81156900>] dup_fd+0x160/0x2e0
> Jul 23 21:10:05 positronic18696 RSP: 0018:ffff880669ebdd90  EFLAGS: 00010206
> Jul 23 21:10:05 positronic18696 RAX: 0000000000000038 RBX:
> ffff8807ed95eec0 RCX: 0000000000000007
> Jul 23 21:10:05 positronic18696 RDX: 00000000ffffffff RSI:
> 0000000000000800 RDI: ffff8805a4d01d40
> Jul 23 21:10:05 positronic18696 RBP: ffff880669ebddf0 R08:
> 0000000000000020 R09: ffffffff81156694
> Jul 23 21:10:05 positronic18696 R10: 0000000000000001 R11:
> 0000000000000000 R12: ffff8807ecf25000
> Jul 23 21:10:05 positronic18696 R13: ffff8805a4d01d80 R14:
> 0000000000000100 R15: ffff8807d3a61800
> Jul 23 21:10:05 positronic18696 FS:  00007f1a8e719700(0000)
> GS:ffff88083fc40000(0000) knlGS:0000000000000000
> Jul 23 21:10:05 positronic18696 CS:  0010 DS: 0000 ES: 0000 CR0:
> 000000008005003b
> Jul 23 21:10:05 positronic18696 CR2: 000000010000002f CR3:
> 000000066ef90000 CR4: 00000000000027e0
> Jul 23 21:10:05 positronic18696 DR0: 0000000000000001 DR1:
> 0000000000000002 DR2: 0000000000000001
> Jul 23 21:10:05 positronic18696 DR3: 000000000000000a DR6:
> 00000000ffff0ff0 DR7: 0000000000000400
> Jul 23 21:10:05 positronic18696 Process queue.sh (pid: 17596,
> threadinfo ffff880669ebc000, task ffff8806625ab000)
> Jul 23 21:10:05 positronic18696 Stack:
> Jul 23 21:10:05 positronic18696 ffff880669ebdda0 000000018102db49
> 0000000000000020 ffff8806627ee8c0
> Jul 23 21:10:05 positronic18696 ffff8807eefc1608 ffff8807eefc1680
> 00007f1a8e7199d0 ffff8807bf41d000
> Jul 23 21:10:05 positronic18696 0000000000000000 0000000001200011
> 00007f1a8e7199d0 0000000000000000
> Jul 23 21:10:05 positronic18696 Call Trace:
> Jul 23 21:10:05 positronic18696 [<ffffffff81040441>] copy_process+0x931/0x13c0
> Jul 23 21:10:05 positronic18696 [<ffffffff81041024>] do_fork+0x54/0x360
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac3b7e>] ? _raw_spin_lock+0xe/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff810559e7>] ?
> __set_task_blocked+0x37/0x80
> Jul 23 21:10:05 positronic18696 [<ffffffff81055a83>] ?
> __set_current_blocked+0x53/0x70
> Jul 23 21:10:05 positronic18696 [<ffffffff8100c098>] sys_clone+0x28/0x30
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac4bb3>] stub_clone+0x13/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac4929>] ?
> system_call_fastpath+0x16/0x1b
> Jul 23 21:10:05 positronic18696 Code: 8b 45 b0 49 8b 7d 10 48 8b 71 10
> 4c 89 c2 e8 08 82 23 00 45 85 f6 74 54 41 8d 46 ff 31 c9 48 8d 34 c5
> 08 00 00 00 31 c0 eb 15 90 <f0> 48 ff 42 30 49 89 14 04 ff c1 48 83 c0
> 08 48 39 f0 74 24 49
> Jul 23 21:10:05 positronic18696 RIP  [<ffffffff81156900>] dup_fd+0x160/0x2e0
> Jul 23 21:10:05 positronic18696 RSP <ffff880669ebdd90>
> Jul 23 21:10:05 positronic18696 CR2: 000000010000002f
> Jul 23 21:10:05 positronic18696 ---[ end trace ccf5b66c39d92756 ]---
> Jul 23 21:10:05 positronic18696 device vmtap35 left promiscuous mode
> Jul 23 21:10:05 positronic18696 device vmEtap35 left promiscuous mode
> Jul 23 21:10:05 positronic18696 device vmtap36 left promiscuous mode
> Jul 23 21:10:05 positronic18696 device vmEtap36 left promiscuous mode
> Jul 23 21:10:05 positronic18696 device vmtap37 left promiscuous mode
> Jul 23 21:10:05 positronic18696 device vmEtap37 left promiscuous mode
> Jul 23 21:10:05 positronic18696 device vmtap38 left promiscuous mode
> Jul 23 21:10:05 positronic18696 device vmEtap38 left promiscuous mode
> Jul 23 21:10:05 positronic18696 BUG: unable to handle kernel paging
> request at 000000010000003b
> Jul 23 21:10:05 positronic18696 IP: [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 PGD 598c9e067 PUD 0
> Jul 23 21:10:05 positronic18696 Oops: 0000 [#2] SMP
> Jul 23 21:10:05 positronic18696 CPU 0
> Jul 23 21:10:05 positronic18696 Modules linked in: kvm_intel kvm
> Jul 23 21:10:05 positronic18696
> Jul 23 21:10:05 positronic18696 Pid: 21815, comm: netstat Tainted: G
>    D      3.5.0-rc7-dirty #6 Dell Inc. PowerEdge M600/0MY736
> Jul 23 21:10:05 positronic18696 RIP: 0010:[<ffffffff8119f684>]
> [<ffffffff8119f684>] tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP: 0018:ffff88053f965d78  EFLAGS: 00010206
> Jul 23 21:10:05 positronic18696 RAX: ffff8807ee3bf700 RBX:
> ffff8807ed1d9118 RCX: 000000000000007e
> Jul 23 21:10:05 positronic18696 RDX: 00000000ffffffff RSI:
> 0000000000000000 RDI: ffff8807ee3bf700
> Jul 23 21:10:05 positronic18696 RBP: ffff88053f965d98 R08:
> ffff88083fc16a10 R09: ffffffff8119bfe0
> Jul 23 21:10:05 positronic18696 R10: 0000000000000000 R11:
> 0000000000000206 R12: ffff8807d8afaa80
> Jul 23 21:10:05 positronic18696 R13: ffff8808139d7000 R14:
> ffff8807ed98d038 R15: ffff88053f965e08
> Jul 23 21:10:05 positronic18696 FS:  00007faee78b5700(0000)
> GS:ffff88083fc00000(0000) knlGS:0000000000000000
> Jul 23 21:10:05 positronic18696 CS:  0010 DS: 0000 ES: 0000 CR0:
> 0000000080050033
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b CR3:
> 00000007e2eb5000 CR4: 00000000000007e0
> Jul 23 21:10:05 positronic18696 DR0: 0000000000000001 DR1:
> 0000000000000002 DR2: 0000000000000001
> Jul 23 21:10:05 positronic18696 DR3: 000000000000000a DR6:
> 00000000ffff0ff0 DR7: 0000000000000400
> Jul 23 21:10:05 positronic18696 Process netstat (pid: 21815,
> threadinfo ffff88053f964000, task ffff8807c6207000)
> Jul 23 21:10:05 positronic18696 Stack:
> Jul 23 21:10:05 positronic18696 ffff8807d8afaa80 0000000000000007
> ffff8807ed1d9118 ffff8807ee63ab40
> Jul 23 21:10:05 positronic18696 ffff88053f965dc8 ffffffff8119f8b0
> ffffffffff0a0210 0000000000000001
> Jul 23 21:10:05 positronic18696 ffff88053f965e98 ffff8807eca70200
> ffff88053f965e48 ffffffff811a0876
> Jul 23 21:10:05 positronic18696 Call Trace:
> Jul 23 21:10:05 positronic18696 [<ffffffff8119f8b0>]
> proc_fd_instantiate+0x80/0xa0
> Jul 23 21:10:05 positronic18696 [<ffffffff811a0876>] proc_fill_cache+0x126/0x150
> Jul 23 21:10:05 positronic18696 [<ffffffff8119f830>] ?
> proc_fdinfo_instantiate+0x90/0x90
> Jul 23 21:10:05 positronic18696 [<ffffffff8114cc50>] ? filldir64+0xe0/0xe0
> Jul 23 21:10:05 positronic18696 [<ffffffff811a0ba6>]
> proc_readfd_common+0xf6/0x1c0
> Jul 23 21:10:05 positronic18696 [<ffffffff8119f830>] ?
> proc_fdinfo_instantiate+0x90/0x90
> Jul 23 21:10:05 positronic18696 [<ffffffff8114cc50>] ? filldir64+0xe0/0xe0
> Jul 23 21:10:05 positronic18696 [<ffffffff811a0ca5>] proc_readfd+0x15/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff8114ce70>] vfs_readdir+0xa0/0xc0
> Jul 23 21:10:05 positronic18696 [<ffffffff8114cc50>] ? filldir64+0xe0/0xe0
> Jul 23 21:10:05 positronic18696 [<ffffffff8114d01d>] sys_getdents+0x8d/0x100
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac4929>]
> system_call_fastpath+0x16/0x1b
> Jul 23 21:10:05 positronic18696 Code: b8 00 00 00 48 8b 50 08 44 3b 32
> 0f 83 9e 00 00 00 45 89 f6 49 c1 e6 03 4c 03 72 08 49 8b 16 48 85 d2
> 0f 84 87 00 00 00 48 89 c7 <44> 8b 62 3c e8 b3 67 ea ff 4c 89 ef e8 0b
> e0 ff ff 85 c0 0f 84
> Jul 23 21:10:05 positronic18696 RIP  [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP <ffff88053f965d78>
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b
> Jul 23 21:10:05 positronic18696 ---[ end trace ccf5b66c39d92757 ]---
> Jul 23 21:10:05 positronic18696 BUG: unable to handle kernel paging
> request at 000000010000002f
> Jul 23 21:10:05 positronic18696 IP: [<ffffffff81156900>] dup_fd+0x160/0x2e0
> Jul 23 21:10:05 positronic18696 PGD 7ee96c067 PUD 0
> Jul 23 21:10:05 positronic18696 Oops: 0002 [#3] SMP
> Jul 23 21:10:05 positronic18696 CPU 3
> Jul 23 21:10:05 positronic18696 Modules linked in: kvm_intel kvm
> Jul 23 21:10:05 positronic18696
> Jul 23 21:10:05 positronic18696 Pid: 7882, comm: bash Tainted: G
> D      3.5.0-rc7-dirty #6 Dell Inc. PowerEdge M600/0MY736
> Jul 23 21:10:05 positronic18696 RIP: 0010:[<ffffffff81156900>]
> [<ffffffff81156900>] dup_fd+0x160/0x2e0
> Jul 23 21:10:05 positronic18696 RSP: 0018:ffff8807ec9e1d90  EFLAGS: 00010206
> Jul 23 21:10:05 positronic18696 RAX: 0000000000000038 RBX:
> ffff8807ed42de40 RCX: 0000000000000007
> Jul 23 21:10:05 positronic18696 RDX: 00000000ffffffff RSI:
> 0000000000000800 RDI: ffff8807ef0de080
> Jul 23 21:10:05 positronic18696 RBP: ffff8807ec9e1df0 R08:
> 0000000000000020 R09: ffffffff81156694
> Jul 23 21:10:05 positronic18696 R10: 00000000fffffffb R11:
> 0000000000000000 R12: ffff8807eb8ec000
> Jul 23 21:10:05 positronic18696 R13: ffff8807ef0de440 R14:
> 0000000000000100 R15: ffff8807ed98d000
> Jul 23 21:10:05 positronic18696 FS:  00007f7d50f02700(0000)
> GS:ffff88083fcc0000(0000) knlGS:0000000000000000
> Jul 23 21:10:05 positronic18696 CS:  0010 DS: 0000 ES: 0000 CR0:
> 000000008005003b
> Jul 23 21:10:05 positronic18696 CR2: 000000010000002f CR3:
> 00000007ed669000 CR4: 00000000000007e0
> Jul 23 21:10:05 positronic18696 DR0: 0000000000000001 DR1:
> 0000000000000002 DR2: 0000000000000001
> Jul 23 21:10:05 positronic18696 DR3: 000000000000000a DR6:
> 00000000ffff0ff0 DR7: 0000000000000400
> Jul 23 21:10:05 positronic18696 Process bash (pid: 7882, threadinfo
> ffff8807ec9e0000, task ffff8808139d7000)
> Jul 23 21:10:05 positronic18696 Stack:
> Jul 23 21:10:05 positronic18696 ffff8807ec9e1da0 000000018102db49
> 0000000000000020 ffff8807ef0de980
> Jul 23 21:10:05 positronic18696 ffff8807ee3bf708 ffff8807ee3bf780
> 00007f7d50f029d0 ffff8806627e6000
> Jul 23 21:10:05 positronic18696 0000000000000000 0000000001200011
> 00007f7d50f029d0 0000000000000000
> Jul 23 21:10:05 positronic18696 Call Trace:
> Jul 23 21:10:05 positronic18696 [<ffffffff81040441>] copy_process+0x931/0x13c0
> Jul 23 21:10:05 positronic18696 [<ffffffff8112902f>] ?
> kmem_cache_alloc+0xaf/0x110
> Jul 23 21:10:05 positronic18696 [<ffffffff81041024>] do_fork+0x54/0x360
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac3b7e>] ? _raw_spin_lock+0xe/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81139247>] ? fd_install+0x67/0x90
> Jul 23 21:10:05 positronic18696 [<ffffffff81144580>] ? do_pipe_flags+0xb0/0x100
> Jul 23 21:10:05 positronic18696 [<ffffffff8100c098>] sys_clone+0x28/0x30
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac4bb3>] stub_clone+0x13/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac4929>] ?
> system_call_fastpath+0x16/0x1b
> Jul 23 21:10:05 positronic18696 Code: 8b 45 b0 49 8b 7d 10 48 8b 71 10
> 4c 89 c2 e8 08 82 23 00 45 85 f6 74 54 41 8d 46 ff 31 c9 48 8d 34 c5
> 08 00 00 00 31 c0 eb 15 90 <f0> 48 ff 42 30 49 89 14 04 ff c1 48 83 c0
> 08 48 39 f0 74 24 49
> Jul 23 21:10:05 positronic18696 RIP  [<ffffffff81156900>] dup_fd+0x160/0x2e0
> Jul 23 21:10:05 positronic18696 RSP <ffff8807ec9e1d90>
> Jul 23 21:10:05 positronic18696 CR2: 000000010000002f
> Jul 23 21:10:05 positronic18696 ---[ end trace ccf5b66c39d92758 ]---
> Jul 23 21:10:05 positronic18696 BUG: unable to handle kernel paging
> request at 000000010000003b
> Jul 23 21:10:05 positronic18696 IP: [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 PGD 7ec990067 PUD 0
> Jul 23 21:10:05 positronic18696 Oops: 0000 [#4] SMP
> Jul 23 21:10:05 positronic18696 CPU 3
> Jul 23 21:10:05 positronic18696 Modules linked in: kvm_intel kvm
> Jul 23 21:10:05 positronic18696
> Jul 23 21:10:05 positronic18696 Pid: 22417, comm: netstat Tainted: G
>    D      3.5.0-rc7-dirty #6 Dell Inc. PowerEdge M600/0MY736
> Jul 23 21:10:05 positronic18696 RIP: 0010:[<ffffffff8119f684>]
> [<ffffffff8119f684>] tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP: 0018:ffff88066ef4fcd8  EFLAGS: 00010206
> Jul 23 21:10:05 positronic18696 RAX: ffff8807ee3bf180 RBX:
> ffff8807ed065f88 RCX: ffff8807ed051000
> Jul 23 21:10:05 positronic18696 RDX: 00000000ffffffff RSI:
> 0000000000000000 RDI: ffff8807ee3bf180
> Jul 23 21:10:05 positronic18696 RBP: ffff88066ef4fcf8 R08:
> ffff8807ed051038 R09: ffffffffffcaffc8
> Jul 23 21:10:05 positronic18696 R10: ffff88066ef4fc44 R11:
> 0000000000000004 R12: ffff8807ed051000
> Jul 23 21:10:05 positronic18696 R13: ffff8807ee1ab000 R14:
> ffff8807eb875038 R15: ffff880813b59c20
> Jul 23 21:10:05 positronic18696 FS:  00007f7200558700(0000)
> GS:ffff88083fcc0000(0000) knlGS:0000000000000000
> Jul 23 21:10:05 positronic18696 CS:  0010 DS: 0000 ES: 0000 CR0:
> 0000000080050033
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b CR3:
> 00000007ec9fd000 CR4: 00000000000027e0
> Jul 23 21:10:05 positronic18696 DR0: 0000000000000001 DR1:
> 0000000000000002 DR2: 0000000000000001
> Jul 23 21:10:05 positronic18696 DR3: 000000000000000a DR6:
> 00000000ffff0ff0 DR7: 0000000000000400
> Jul 23 21:10:05 positronic18696 Process netstat (pid: 22417,
> threadinfo ffff88066ef4e000, task ffff8807ecfa9000)
> Jul 23 21:10:05 positronic18696 Stack:
> Jul 23 21:10:05 positronic18696 ffff88066ef4fdb8 ffff88066ef4fe48
> ffff88066ef4fdc8 0000000000000001
> Jul 23 21:10:05 positronic18696 ffff88066ef4fd58 ffffffff811460dc
> ffff880813b59c20 ffff8807ed051000
> Jul 23 21:10:05 positronic18696 0000000000000001 ffff8807ed0642a8
> 0000000000000040 ffff88066ef4fe48
> Jul 23 21:10:05 positronic18696 Call Trace:
> Jul 23 21:10:05 positronic18696 [<ffffffff811460dc>] lookup_fast+0x1fc/0x2f0
> Jul 23 21:10:05 positronic18696 [<ffffffff81147d2d>] path_lookupat+0x12d/0x780
> Jul 23 21:10:05 positronic18696 [<ffffffff81150d94>] ? dynamic_dname+0x94/0xa0
> Jul 23 21:10:05 positronic18696 [<ffffffff811483b3>] do_path_lookup+0x33/0x80
> Jul 23 21:10:05 positronic18696 [<ffffffff811486a9>]
> user_path_at_empty+0x59/0xb0
> Jul 23 21:10:05 positronic18696 [<ffffffff81145ad2>] ? path_put+0x22/0x30
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac3b7e>] ? _raw_spin_lock+0xe/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff8106d29a>] ? lg_local_unlock+0x1a/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81159264>] ?
> mntput_no_expire+0x44/0x140
> Jul 23 21:10:05 positronic18696 [<ffffffff81159381>] ? mntput+0x21/0x40
> Jul 23 21:10:05 positronic18696 [<ffffffff8113facd>] sys_readlinkat+0x4d/0xc0
> Jul 23 21:10:05 positronic18696 [<ffffffff8113fb5b>] sys_readlink+0x1b/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac4929>]
> system_call_fastpath+0x16/0x1b
> Jul 23 21:10:05 positronic18696 Code: b8 00 00 00 48 8b 50 08 44 3b 32
> 0f 83 9e 00 00 00 45 89 f6 49 c1 e6 03 4c 03 72 08 49 8b 16 48 85 d2
> 0f 84 87 00 00 00 48 89 c7 <44> 8b 62 3c e8 b3 67 ea ff 4c 89 ef e8 0b
> e0 ff ff 85 c0 0f 84
> Jul 23 21:10:05 positronic18696 RIP  [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP <ffff88066ef4fcd8>
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b
> Jul 23 21:10:05 positronic18696 ---[ end trace ccf5b66c39d92759 ]---
> Jul 23 21:10:05 positronic18696 device vmtap24 entered promiscuous mode
> Jul 23 21:10:05 positronic18696 BUG: unable to handle kernel paging
> request at 000000010000003b
> Jul 23 21:10:05 positronic18696 IP: [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 PGD 7ecea9067 PUD 0
> Jul 23 21:10:05 positronic18696 Oops: 0000 [#5] SMP
> Jul 23 21:10:05 positronic18696 CPU 2
> Jul 23 21:10:05 positronic18696 Modules linked in: kvm_intel kvm
> Jul 23 21:10:05 positronic18696
> Jul 23 21:10:05 positronic18696 Pid: 22487, comm: netstat Tainted: G
>    D      3.5.0-rc7-dirty #6 Dell Inc. PowerEdge M600/0MY736
> Jul 23 21:10:05 positronic18696 RIP: 0010:[<ffffffff8119f684>]
> [<ffffffff8119f684>] tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP: 0018:ffff8807ecb4dcd8  EFLAGS: 00010206
> Jul 23 21:10:05 positronic18696 RAX: ffff8807ee3bf180 RBX:
> ffff8807ed065f88 RCX: ffff8807ed051000
> Jul 23 21:10:05 positronic18696 RDX: 00000000ffffffff RSI:
> 0000000000000000 RDI: ffff8807ee3bf180
> Jul 23 21:10:05 positronic18696 RBP: ffff8807ecb4dcf8 R08:
> ffff8807ed051038 R09: ffffffffffcaffc8
> Jul 23 21:10:05 positronic18696 R10: ffff8807ecb4dc44 R11:
> 0000000000000004 R12: ffff8807ed051000
> Jul 23 21:10:05 positronic18696 R13: ffff8807ee1ab000 R14:
> ffff8807eb875038 R15: ffff880813b59c20
> Jul 23 21:10:05 positronic18696 FS:  00007f370dd20700(0000)
> GS:ffff88083fc80000(0000) knlGS:0000000000000000
> Jul 23 21:10:05 positronic18696 CS:  0010 DS: 0000 ES: 0000 CR0:
> 0000000080050033
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b CR3:
> 0000000623f45000 CR4: 00000000000027e0
> Jul 23 21:10:05 positronic18696 DR0: 0000000000000001 DR1:
> 0000000000000002 DR2: 0000000000000001
> Jul 23 21:10:05 positronic18696 DR3: 000000000000000a DR6:
> 00000000ffff0ff0 DR7: 0000000000000400
> Jul 23 21:10:05 positronic18696 Process netstat (pid: 22487,
> threadinfo ffff8807ecb4c000, task ffff8807d1b99000)
> Jul 23 21:10:05 positronic18696 Stack:
> Jul 23 21:10:05 positronic18696 ffff8807ecb4ddb8 ffff8807ecb4de48
> ffff8807ecb4ddc8 0000000000000001
> Jul 23 21:10:05 positronic18696 ffff8807ecb4dd58 ffffffff811460dc
> ffff880813b59c20 ffff8807ed051000
> Jul 23 21:10:05 positronic18696 0000000000000001 ffff8807ed0642a8
> 0000000000000040 ffff8807ecb4de48
> Jul 23 21:10:05 positronic18696 Call Trace:
> Jul 23 21:10:05 positronic18696 [<ffffffff811460dc>] lookup_fast+0x1fc/0x2f0
> Jul 23 21:10:05 positronic18696 [<ffffffff81147d2d>] path_lookupat+0x12d/0x780
> Jul 23 21:10:05 positronic18696 [<ffffffff81150d94>] ? dynamic_dname+0x94/0xa0
> Jul 23 21:10:05 positronic18696 [<ffffffff811483b3>] do_path_lookup+0x33/0x80
> Jul 23 21:10:05 positronic18696 [<ffffffff811486a9>]
> user_path_at_empty+0x59/0xb0
> Jul 23 21:10:05 positronic18696 [<ffffffff81145ad2>] ? path_put+0x22/0x30
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac3b7e>] ? _raw_spin_lock+0xe/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff8106d29a>] ? lg_local_unlock+0x1a/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81159264>] ?
> mntput_no_expire+0x44/0x140
> Jul 23 21:10:05 positronic18696 [<ffffffff81159381>] ? mntput+0x21/0x40
> Jul 23 21:10:05 positronic18696 [<ffffffff8113facd>] sys_readlinkat+0x4d/0xc0
> Jul 23 21:10:05 positronic18696 [<ffffffff8113fb5b>] sys_readlink+0x1b/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac4929>]
> system_call_fastpath+0x16/0x1b
> Jul 23 21:10:05 positronic18696 Code: b8 00 00 00 48 8b 50 08 44 3b 32
> 0f 83 9e 00 00 00 45 89 f6 49 c1 e6 03 4c 03 72 08 49 8b 16 48 85 d2
> 0f 84 87 00 00 00 48 89 c7 <44> 8b 62 3c e8 b3 67 ea ff 4c 89 ef e8 0b
> e0 ff ff 85 c0 0f 84
> Jul 23 21:10:05 positronic18696 RIP  [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP <ffff8807ecb4dcd8>
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b
> Jul 23 21:10:05 positronic18696 ---[ end trace ccf5b66c39d9275a ]---
> Jul 23 21:10:05 positronic18696 device vmEtap24 entered promiscuous mode
> Jul 23 21:10:05 positronic18696 BUG: unable to handle kernel paging
> request at 000000010000003b
> Jul 23 21:10:05 positronic18696 IP: [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 PGD 7ec9a0067 PUD 0
> Jul 23 21:10:05 positronic18696 Oops: 0000 [#6] SMP
> Jul 23 21:10:05 positronic18696 CPU 3
> Jul 23 21:10:05 positronic18696 Modules linked in: kvm_intel kvm
> Jul 23 21:10:05 positronic18696
> Jul 23 21:10:05 positronic18696 Pid: 22570, comm: netstat Tainted: G
>    D      3.5.0-rc7-dirty #6 Dell Inc. PowerEdge M600/0MY736
> Jul 23 21:10:05 positronic18696 RIP: 0010:[<ffffffff8119f684>]
> [<ffffffff8119f684>] tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP: 0018:ffff88066edebcd8  EFLAGS: 00010206
> Jul 23 21:10:05 positronic18696 RAX: ffff8807ee3bf180 RBX:
> ffff8807ed065f88 RCX: ffff8807ed051000
> Jul 23 21:10:05 positronic18696 RDX: 00000000ffffffff RSI:
> 0000000000000000 RDI: ffff8807ee3bf180
> Jul 23 21:10:05 positronic18696 RBP: ffff88066edebcf8 R08:
> ffff8807ed051038 R09: ffffffffffcaffc8
> Jul 23 21:10:05 positronic18696 R10: ffff88066edebc44 R11:
> 0000000000000004 R12: ffff8807ed051000
> Jul 23 21:10:05 positronic18696 R13: ffff8807ee1ab000 R14:
> ffff8807eb875038 R15: ffff880813b59c20
> Jul 23 21:10:05 positronic18696 FS:  00007f914b112700(0000)
> GS:ffff88083fcc0000(0000) knlGS:0000000000000000
> Jul 23 21:10:05 positronic18696 CS:  0010 DS: 0000 ES: 0000 CR0:
> 0000000080050033
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b CR3:
> 00000005a4c9b000 CR4: 00000000000027e0
> Jul 23 21:10:05 positronic18696 DR0: 0000000000000001 DR1:
> 0000000000000002 DR2: 0000000000000001
> Jul 23 21:10:05 positronic18696 DR3: 000000000000000a DR6:
> 00000000ffff0ff0 DR7: 0000000000000400
> Jul 23 21:10:05 positronic18696 Process netstat (pid: 22570,
> threadinfo ffff88066edea000, task ffff8807eefa2000)
> Jul 23 21:10:05 positronic18696 Stack:
> Jul 23 21:10:05 positronic18696 ffff88066edebdb8 ffff88066edebe48
> ffff88066edebdc8 0000000000000001
> Jul 23 21:10:05 positronic18696 ffff88066edebd58 ffffffff811460dc
> ffff880813b59c20 ffff8807ed051000
> Jul 23 21:10:05 positronic18696 0000000000000001 ffff8807ed0642a8
> 0000000000000040 ffff88066edebe48
> Jul 23 21:10:05 positronic18696 Call Trace:
> Jul 23 21:10:05 positronic18696 [<ffffffff811460dc>] lookup_fast+0x1fc/0x2f0
> Jul 23 21:10:05 positronic18696 [<ffffffff81147d2d>] path_lookupat+0x12d/0x780
> Jul 23 21:10:05 positronic18696 [<ffffffff81150d94>] ? dynamic_dname+0x94/0xa0
> Jul 23 21:10:05 positronic18696 [<ffffffff811483b3>] do_path_lookup+0x33/0x80
> Jul 23 21:10:05 positronic18696 [<ffffffff811486a9>]
> user_path_at_empty+0x59/0xb0
> Jul 23 21:10:05 positronic18696 [<ffffffff81145ad2>] ? path_put+0x22/0x30
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac3b7e>] ? _raw_spin_lock+0xe/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff8106d29a>] ? lg_local_unlock+0x1a/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81159264>] ?
> mntput_no_expire+0x44/0x140
> Jul 23 21:10:05 positronic18696 [<ffffffff81159381>] ? mntput+0x21/0x40
> Jul 23 21:10:05 positronic18696 [<ffffffff8113facd>] sys_readlinkat+0x4d/0xc0
> Jul 23 21:10:05 positronic18696 [<ffffffff8113fb5b>] sys_readlink+0x1b/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac4929>]
> system_call_fastpath+0x16/0x1b
> Jul 23 21:10:05 positronic18696 Code: b8 00 00 00 48 8b 50 08 44 3b 32
> 0f 83 9e 00 00 00 45 89 f6 49 c1 e6 03 4c 03 72 08 49 8b 16 48 85 d2
> 0f 84 87 00 00 00 48 89 c7 <44> 8b 62 3c e8 b3 67 ea ff 4c 89 ef e8 0b
> e0 ff ff 85 c0 0f 84
> Jul 23 21:10:05 positronic18696 RIP  [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP <ffff88066edebcd8>
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b
> Jul 23 21:10:05 positronic18696 ---[ end trace ccf5b66c39d9275b ]---
> Jul 23 21:10:05 positronic18696 BUG: unable to handle kernel paging
> request at 000000010000003b
> Jul 23 21:10:05 positronic18696 IP: [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 PGD 53d536067 PUD 0
> Jul 23 21:10:05 positronic18696 Oops: 0000 [#7] SMP
> Jul 23 21:10:05 positronic18696 CPU 1
> Jul 23 21:10:05 positronic18696 Modules linked in: kvm_intel kvm
> Jul 23 21:10:05 positronic18696
> Jul 23 21:10:05 positronic18696 Pid: 22727, comm: netstat Tainted: G
>    D      3.5.0-rc7-dirty #6 Dell Inc. PowerEdge M600/0MY736
> Jul 23 21:10:05 positronic18696 RIP: 0010:[<ffffffff8119f684>]
> [<ffffffff8119f684>] tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP: 0018:ffff8807bf797cd8  EFLAGS: 00010206
> Jul 23 21:10:05 positronic18696 RAX: ffff8807ee3bf180 RBX:
> ffff8807ed065f88 RCX: ffff8807ed051000
> Jul 23 21:10:05 positronic18696 RDX: 00000000ffffffff RSI:
> 0000000000000000 RDI: ffff8807ee3bf180
> Jul 23 21:10:05 positronic18696 RBP: ffff8807bf797cf8 R08:
> ffff8807ed051038 R09: ffffffffffcaffc8
> Jul 23 21:10:05 positronic18696 R10: ffff8807bf797c44 R11:
> 0000000000000004 R12: ffff8807ed051000
> Jul 23 21:10:05 positronic18696 R13: ffff8807ee1ab000 R14:
> ffff8807eb875038 R15: ffff880813b59c20
> Jul 23 21:10:05 positronic18696 FS:  00007f49e0de2700(0000)
> GS:ffff88083fc40000(0000) knlGS:0000000000000000
> Jul 23 21:10:05 positronic18696 CS:  0010 DS: 0000 ES: 0000 CR0:
> 0000000080050033
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b CR3:
> 000000066ed95000 CR4: 00000000000027e0
> Jul 23 21:10:05 positronic18696 DR0: 0000000000000001 DR1:
> 0000000000000002 DR2: 0000000000000001
> Jul 23 21:10:05 positronic18696 DR3: 000000000000000a DR6:
> 00000000ffff0ff0 DR7: 0000000000000400
> Jul 23 21:10:05 positronic18696 Process netstat (pid: 22727,
> threadinfo ffff8807bf796000, task ffff8807eeeb1000)
> Jul 23 21:10:05 positronic18696 Stack:
> Jul 23 21:10:05 positronic18696 ffff8807bf797db8 ffff8807bf797e48
> ffff8807bf797dc8 0000000000000001
> Jul 23 21:10:05 positronic18696 ffff8807bf797d58 ffffffff811460dc
> ffff880813b59c20 ffff8807ed051000
> Jul 23 21:10:05 positronic18696 0000000000000001 ffff8807ed0642a8
> 0000000000000040 ffff8807bf797e48
> Jul 23 21:10:05 positronic18696 Call Trace:
> Jul 23 21:10:05 positronic18696 [<ffffffff811460dc>] lookup_fast+0x1fc/0x2f0
> Jul 23 21:10:05 positronic18696 [<ffffffff81147d2d>] path_lookupat+0x12d/0x780
> Jul 23 21:10:05 positronic18696 [<ffffffff81150d94>] ? dynamic_dname+0x94/0xa0
> Jul 23 21:10:05 positronic18696 [<ffffffff811483b3>] do_path_lookup+0x33/0x80
> Jul 23 21:10:05 positronic18696 [<ffffffff811486a9>]
> user_path_at_empty+0x59/0xb0
> Jul 23 21:10:05 positronic18696 [<ffffffff81145ad2>] ? path_put+0x22/0x30
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac3b7e>] ? _raw_spin_lock+0xe/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff8106d29a>] ? lg_local_unlock+0x1a/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81159264>] ?
> mntput_no_expire+0x44/0x140
> Jul 23 21:10:05 positronic18696 [<ffffffff81159381>] ? mntput+0x21/0x40
> Jul 23 21:10:05 positronic18696 [<ffffffff8113facd>] sys_readlinkat+0x4d/0xc0
> Jul 23 21:10:05 positronic18696 [<ffffffff8113fb5b>] sys_readlink+0x1b/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac4929>]
> system_call_fastpath+0x16/0x1b
> Jul 23 21:10:05 positronic18696 Code: b8 00 00 00 48 8b 50 08 44 3b 32
> 0f 83 9e 00 00 00 45 89 f6 49 c1 e6 03 4c 03 72 08 49 8b 16 48 85 d2
> 0f 84 87 00 00 00 48 89 c7 <44> 8b 62 3c e8 b3 67 ea ff 4c 89 ef e8 0b
> e0 ff ff 85 c0 0f 84
> Jul 23 21:10:05 positronic18696 RIP  [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP <ffff8807bf797cd8>
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b
> Jul 23 21:10:05 positronic18696 ---[ end trace ccf5b66c39d9275c ]---
> Jul 23 21:10:05 positronic18696 device vmtap25 entered promiscuous mode
> Jul 23 21:10:05 positronic18696 BUG: unable to handle kernel paging
> request at 000000010000003b
> Jul 23 21:10:05 positronic18696 IP: [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 PGD 7c6184067 PUD 0
> Jul 23 21:10:05 positronic18696 Oops: 0000 [#8] SMP
> Jul 23 21:10:05 positronic18696 CPU 7
> Jul 23 21:10:05 positronic18696 Modules linked in: kvm_intel kvm
> Jul 23 21:10:05 positronic18696
> Jul 23 21:10:05 positronic18696 Pid: 22808, comm: netstat Tainted: G
>    D      3.5.0-rc7-dirty #6 Dell Inc. PowerEdge M600/0MY736
> Jul 23 21:10:05 positronic18696 RIP: 0010:[<ffffffff8119f684>]
> [<ffffffff8119f684>] tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP: 0018:ffff880771b43cd8  EFLAGS: 00010206
> Jul 23 21:10:05 positronic18696 RAX: ffff8807ee3bf180 RBX:
> ffff8807ed065f88 RCX: ffff8807ed051000
> Jul 23 21:10:05 positronic18696 RDX: 00000000ffffffff RSI:
> 0000000000000000 RDI: ffff8807ee3bf180
> Jul 23 21:10:05 positronic18696 RBP: ffff880771b43cf8 R08:
> ffff8807ed051038 R09: ffffffffffcaffc8
> Jul 23 21:10:05 positronic18696 R10: ffff880771b43c44 R11:
> 0000000000000004 R12: ffff8807ed051000
> Jul 23 21:10:05 positronic18696 R13: ffff8807ee1ab000 R14:
> ffff8807eb875038 R15: ffff880813b59c20
> Jul 23 21:10:05 positronic18696 FS:  00007f22e3d5f700(0000)
> GS:ffff88083fdc0000(0000) knlGS:0000000000000000
> Jul 23 21:10:05 positronic18696 CS:  0010 DS: 0000 ES: 0000 CR0:
> 0000000080050033
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b CR3:
> 000000053d5cc000 CR4: 00000000000027e0
> Jul 23 21:10:05 positronic18696 DR0: 0000000000000001 DR1:
> 0000000000000002 DR2: 0000000000000001
> Jul 23 21:10:05 positronic18696 DR3: 000000000000000a DR6:
> 00000000ffff0ff0 DR7: 0000000000000400
> Jul 23 21:10:05 positronic18696 Process netstat (pid: 22808,
> threadinfo ffff880771b42000, task ffff8807e2e36000)
> Jul 23 21:10:05 positronic18696 Stack:
> Jul 23 21:10:05 positronic18696 ffff880771b43db8 ffff880771b43e48
> ffff880771b43dc8 0000000000000001
> Jul 23 21:10:05 positronic18696 ffff880771b43d58 ffffffff811460dc
> ffff880813b59c20 ffff8807ed051000
> Jul 23 21:10:05 positronic18696 0000000000000001 ffff8807ed0642a8
> 0000000000000040 ffff880771b43e48
> Jul 23 21:10:05 positronic18696 Call Trace:
> Jul 23 21:10:05 positronic18696 [<ffffffff811460dc>] lookup_fast+0x1fc/0x2f0
> Jul 23 21:10:05 positronic18696 [<ffffffff81147d2d>] path_lookupat+0x12d/0x780
> Jul 23 21:10:05 positronic18696 [<ffffffff81150d94>] ? dynamic_dname+0x94/0xa0
> Jul 23 21:10:05 positronic18696 [<ffffffff811483b3>] do_path_lookup+0x33/0x80
> Jul 23 21:10:05 positronic18696 [<ffffffff811486a9>]
> user_path_at_empty+0x59/0xb0
> Jul 23 21:10:05 positronic18696 [<ffffffff81145ad2>] ? path_put+0x22/0x30
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac3b7e>] ? _raw_spin_lock+0xe/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff8106d29a>] ? lg_local_unlock+0x1a/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81159264>] ?
> mntput_no_expire+0x44/0x140
> Jul 23 21:10:05 positronic18696 [<ffffffff81159381>] ? mntput+0x21/0x40
> Jul 23 21:10:05 positronic18696 [<ffffffff8113facd>] sys_readlinkat+0x4d/0xc0
> Jul 23 21:10:05 positronic18696 [<ffffffff8113fb5b>] sys_readlink+0x1b/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac4929>]
> system_call_fastpath+0x16/0x1b
> Jul 23 21:10:05 positronic18696 Code: b8 00 00 00 48 8b 50 08 44 3b 32
> 0f 83 9e 00 00 00 45 89 f6 49 c1 e6 03 4c 03 72 08 49 8b 16 48 85 d2
> 0f 84 87 00 00 00 48 89 c7 <44> 8b 62 3c e8 b3 67 ea ff 4c 89 ef e8 0b
> e0 ff ff 85 c0 0f 84
> Jul 23 21:10:05 positronic18696 RIP  [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP <ffff880771b43cd8>
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b
> Jul 23 21:10:05 positronic18696 ---[ end trace ccf5b66c39d9275d ]---
> Jul 23 21:10:05 positronic18696 BUG: unable to handle kernel paging
> request at 000000010000003b
> Jul 23 21:10:05 positronic18696 IP: [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 device vmEtap25 entered promiscuous mode
> Jul 23 21:10:05 positronic18696 PGD 771aad067 PUD 0
> Jul 23 21:10:05 positronic18696 Oops: 0000 [#9] SMP
> Jul 23 21:10:05 positronic18696 CPU 0
> Jul 23 21:10:05 positronic18696 Modules linked in: kvm_intel kvm
> Jul 23 21:10:05 positronic18696
> Jul 23 21:10:05 positronic18696 Pid: 22820, comm: netstat Tainted: G
>    D      3.5.0-rc7-dirty #6 Dell Inc. PowerEdge M600/0MY736
> Jul 23 21:10:05 positronic18696 RIP: 0010:[<ffffffff8119f684>]
> [<ffffffff8119f684>] tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP: 0018:ffff8807c628fcd8  EFLAGS: 00010206
> Jul 23 21:10:05 positronic18696 RAX: ffff8807ee3bf180 RBX:
> ffff8807ed065f88 RCX: ffff8807ed051000
> Jul 23 21:10:05 positronic18696 RDX: 00000000ffffffff RSI:
> 0000000000000000 RDI: ffff8807ee3bf180
> Jul 23 21:10:05 positronic18696 RBP: ffff8807c628fcf8 R08:
> ffff8807ed051038 R09: ffffffffffcaffc8
> Jul 23 21:10:05 positronic18696 R10: ffff8807c628fc44 R11:
> 0000000000000004 R12: ffff8807ed051000
> Jul 23 21:10:05 positronic18696 R13: ffff8807ee1ab000 R14:
> ffff8807eb875038 R15: ffff880813b59c20
> Jul 23 21:10:05 positronic18696 FS:  00007fe1972b9700(0000)
> GS:ffff88083fc00000(0000) knlGS:0000000000000000
> Jul 23 21:10:05 positronic18696 CS:  0010 DS: 0000 ES: 0000 CR0:
> 0000000080050033
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b CR3:
> 00000007a745d000 CR4: 00000000000027e0
> Jul 23 21:10:05 positronic18696 DR0: 0000000000000001 DR1:
> 0000000000000002 DR2: 0000000000000001
> Jul 23 21:10:05 positronic18696 DR3: 000000000000000a DR6:
> 00000000ffff0ff0 DR7: 0000000000000400
> Jul 23 21:10:05 positronic18696 Process netstat (pid: 22820,
> threadinfo ffff8807c628e000, task ffff8807d1a99000)
> Jul 23 21:10:05 positronic18696 Stack:
> Jul 23 21:10:05 positronic18696 ffff8807c628fdb8 ffff8807c628fe48
> ffff8807c628fdc8 0000000000000001
> Jul 23 21:10:05 positronic18696 ffff8807c628fd58 ffffffff811460dc
> ffff880813b59c20 ffff8807ed051000
> Jul 23 21:10:05 positronic18696 0000000000000001 ffff8807ed0642a8
> 0000000000000040 ffff8807c628fe48
> Jul 23 21:10:05 positronic18696 Call Trace:
> Jul 23 21:10:05 positronic18696 [<ffffffff811460dc>] lookup_fast+0x1fc/0x2f0
> Jul 23 21:10:05 positronic18696 [<ffffffff81147d2d>] path_lookupat+0x12d/0x780
> Jul 23 21:10:05 positronic18696 [<ffffffff81150d94>] ? dynamic_dname+0x94/0xa0
> Jul 23 21:10:05 positronic18696 [<ffffffff811483b3>] do_path_lookup+0x33/0x80
> Jul 23 21:10:05 positronic18696 [<ffffffff811486a9>]
> user_path_at_empty+0x59/0xb0
> Jul 23 21:10:05 positronic18696 [<ffffffff81145ad2>] ? path_put+0x22/0x30
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac3b7e>] ? _raw_spin_lock+0xe/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff8106d29a>] ? lg_local_unlock+0x1a/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81159264>] ?
> mntput_no_expire+0x44/0x140
> Jul 23 21:10:05 positronic18696 [<ffffffff81159381>] ? mntput+0x21/0x40
> Jul 23 21:10:05 positronic18696 [<ffffffff8113facd>] sys_readlinkat+0x4d/0xc0
> Jul 23 21:10:05 positronic18696 [<ffffffff8113fb5b>] sys_readlink+0x1b/0x20
> Jul 23 21:10:05 positronic18696 [<ffffffff81ac4929>]
> system_call_fastpath+0x16/0x1b
> Jul 23 21:10:05 positronic18696 Code: b8 00 00 00 48 8b 50 08 44 3b 32
> 0f 83 9e 00 00 00 45 89 f6 49 c1 e6 03 4c 03 72 08 49 8b 16 48 85 d2
> 0f 84 87 00 00 00 48 89 c7 <44> 8b 62 3c e8 b3 67 ea ff 4c 89 ef e8 0b
> e0 ff ff 85 c0 0f 84
> Jul 23 21:10:05 positronic18696 RIP  [<ffffffff8119f684>]
> tid_fd_revalidate+0x84/0x1a0
> Jul 23 21:10:05 positronic18696 RSP <ffff8807c628fcd8>
> Jul 23 21:10:05 positronic18696 CR2: 000000010000003b
> Jul 23 21:10:05 positronic18696 ---[ end trace ccf5b66c39d9275e ]---
> 
> 
> 
> 
> 2012/7/23 Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>:
> > On Sat, Jul 21, 2012 at 12:59:12AM +0200, nicolas prochazka wrote:
> >> Well done
> >> 1fd36adcd98c14d2fd97f545293c488775cb2823  :  the bug occurs   ( cf dump )
> >> 1dce27c5aa6770e9d195f2bb7db1db3d4dde5591 :  the bug not occurs
> >>
> >> Regards,
> >> Nicolas Prochazka.
> >
> > Hi, Nicolas.
> >
> > I was too hasty in sending you the commit id. There is a bug in 1fd36adc
> > that is fixed by commit f044db4cb4bf16893812d35b5fbeaaf3e30c9215. Can
> > you test running f044db4cb4? If you find the bug in there, then we know
> > that this fix isn't the only one needed for 1fd36adc.
> >
> > Regards.
> > Cascardo.
> >
> >>
> >> dump  / 1fd36adcd98c14d2fd97f545293c488775cb2823
> >> lloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> VMtap: no IPv6 routers present
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 71 not NULL!
> >> alloc_fd: slot 121 not NULL!
> >> alloc_fd: slot 96 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 110 not NULL!
> >> alloc_fd: slot 121 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> brE: no IPv6 routers present
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 121 not NULL!
> >> alloc_fd: slot 142 not NULL!
> >> alloc_fd: slot 153 not NULL!
> >> alloc_fd: slot 153 not NULL!
> >> alloc_fd: slot 153 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 70 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 102 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 106 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 106 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 36 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 68 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> alloc_fd: slot 100 not NULL!
> >> ------------[ cut here ]------------
> >> kernel BUG at fs/open.c:873!
> >> invalid opcode: 0000 [#1] SMP
> >> CPU 0
> >> Modules linked in: kvm_intel kvm
> >>
> >> then BUG paging request as usual
> >>
> >>
> >> 2012/7/20 Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>:
> >> > On Fri, Jul 20, 2012 at 10:52:40PM +0200, nicolas prochazka wrote:
> >> >> Hello
> >> >> the problem is occured with  :
> >> >> - linux kernel 3.4.5    i do not test with 3.4.0 / 1 / 2 / 3 / 4    ,
> >> >> but i can if you want
> >> >> - linux kernel 3.5rc6 rc7  / do not test with other rc.
> >> >>
> >> >> the problem is not occured with :
> >> >> linux kernel 3.3.4 / 3.3.8
> >> >>
> >> >> These servers are used for :
> >> >> - starting a lot of virtual machine with qemu-kvm ( ~ 40 )   ( lot of
> >> >> select i think)
> >> >> - do a lot of network tests with openvswitch
> >> >>
> >> >> I can test a kernel 3.4.x before and after a commit id (?) to find a regression.
> >> >>
> >> >> Regards,
> >> >> Nicolas.
> >> >>
> >> >
> >> > Can you try this commit 1fd36adcd98c14d2fd97f545293c488775cb2823? And
> >> > the commit before it?
> >> >
> >> >>
> >> >> 2012/7/20 Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com>:
> >> >> > On Fri, Jul 20, 2012 at 09:21:53AM -0400, Dave Jones wrote:
> >> >> >> On Fri, Jul 20, 2012 at 11:56:06AM +0200, nicolas prochazka wrote:
> >> >> >>
> >> >> >>  > [ 2384.900061] BUG: unable to handle kernel paging request at 000000010000002f
> >> >> >>
> >> >> >> That '1' looks like a random bit flip. Try running memtest86.
> >> >> >>
> >> >> >
> >> >> > Looks more a 32-bit value of 1 followed by a 32-bit value of 0x2f. Most
> >> >> > likely a pointer to some other piece of a struct. However, taking a look
> >> >> > at fs/files.c code, nothing seems suspicious.
> >> >> >
> >> >> > Nicolas, it wasn't clear to me if you had problems with 3.4 too. There
> >> >> > has been some changes in fs/files.c on 3.4-rc1 in the piece of code
> >> >> > where you hit the problem.
> >> >> >
> >> >> > What does your system exercise? Any chance you are using a lot of
> >> >> > select, which has also been changed in those same patches to fs/files.c?
> >> >> >
> >> >> > Regards.
> >> >> > Cascardo.
> >> >> >
> >> >> >
> >> >> >>  > [ 2384.910010] Pid: 23838, comm: queue.sh Tainted: G      D W
> >> >> >>
> >> >> >> This wasn't the first problem either.
> >> >> >>
> >> >> >>  > [ 2397.885344] BUG: unable to handle kernel paging request at 000000010000003b
> >> >> >>
> >> >> >> Looks like the same flipped bit.
> >> >> >>
> >> >> >>       Dave
> >> >> >>
> >> >> >> --
> >> >> >> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> >> >> >> the body of a message to majordomo@vger.kernel.org
> >> >> >> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >> >> >> Please read the FAQ at  http://www.tux.org/lkml/
> >> >> >>
> >> >> >
> >> >>
> >> >
> >> --
> >> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> >> the body of a message to majordomo@vger.kernel.org
> >> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> >> Please read the FAQ at  http://www.tux.org/lkml/
> >>
> >
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
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> 
>