netdev - Linux 4.2-rc6 regression: RIP: e030:[<ffffffff8110fb18>] [<ffffffff8110fb18>] detach_if

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Date:	Wed, 12 Aug 2015 21:19:38 +0200
From:	linux@...elenboom.it
To:	linux-kernel@...r.kernel.org
Cc:	netdev@...r.kernel.org
Subject: Linux 4.2-rc6 regression: RIP: e030:[<ffffffff8110fb18>]
 [<ffffffff8110fb18>] detach_if_pending+0x18/0x80

Hi,

On my box running Xen with a 4.2-rc6 kernel i still get this splat in 
dom0,
which crashes the box.
(i reported a similar splat before (at rc4) here, 
http://www.spinics.net/lists/netdev/msg337570.html)

Never seen this one on 4.1, so it seems a regression.

--
Sander


[81133.193439] general protection fault: 0000 [#1] SMP
[81133.204284] Modules linked in:
[81133.214934] CPU: 0 PID: 3 Comm: ksoftirqd/0 Not tainted 
4.2.0-rc6-20150811-linus-doflr+ #1
[81133.225632] Hardware name: MSI MS-7640/890FXA-GD70 (MS-7640)  , BIOS 
V1.8B1 09/13/2010
[81133.236237] task: ffff880059b91580 ti: ffff880059bb4000 task.ti: 
ffff880059bb4000
[81133.246808] RIP: e030:[<ffffffff8110fb18>]  [<ffffffff8110fb18>] 
detach_if_pending+0x18/0x80
[81133.257354] RSP: e02b:ffff880059bb7848  EFLAGS: 00010086
[81133.267749] RAX: ffff88004eddc7f0 RBX: ffff88000e20ae08 RCX: 
dead000000200200
[81133.278201] RDX: 0000000000000000 RSI: ffff88005f60e600 RDI: 
ffff88000e20ae08
[81133.288723] RBP: ffff880059bb7848 R08: 0000000000000001 R09: 
0000000000000001
[81133.298930] R10: 0000000000000003 R11: ffff88000e20ad68 R12: 
0000000000000000
[81133.308875] R13: 0000000101735569 R14: 0000000000015f90 R15: 
ffff88005f60e600
[81133.318845] FS:  00007f28c6f7c800(0000) GS:ffff88005f600000(0000) 
knlGS:0000000000000000
[81133.328864] CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b
[81133.338693] CR2: ffff8000007f6800 CR3: 000000003d55c000 CR4: 
0000000000000660
[81133.348462] Stack:
[81133.358005]  ffff880059bb7898 ffffffff8110fe3f ffffffff810fc261 
0000000000000200
[81133.367682]  0000000000000003 ffff88000e20ad68 0000000000000000 
ffff88005854d400
[81133.377064]  0000000000015f90 0000000000000000 ffff880059bb78c8 
ffffffff819b5243
[81133.386374] Call Trace:
[81133.395596]  [<ffffffff8110fe3f>] mod_timer_pending+0x3f/0xe0
[81133.404999]  [<ffffffff810fc261>] ? 
__raw_callee_save___pv_queued_spin_unlock+0x11/0x20
[81133.414255]  [<ffffffff819b5243>] __nf_ct_refresh_acct+0xa3/0xb0
[81133.423137]  [<ffffffff819bbe8b>] tcp_packet+0xb3b/0x1290
[81133.431894]  [<ffffffff810cb8ca>] ? __local_bh_enable_ip+0x2a/0x90
[81133.440622]  [<ffffffff819b4939>] ? 
__nf_conntrack_find_get+0x129/0x2a0
[81133.449339]  [<ffffffff819b682c>] nf_conntrack_in+0x29c/0x7c0
[81133.457940]  [<ffffffff81a67181>] ipv4_conntrack_in+0x21/0x30
[81133.466296]  [<ffffffff819aea1c>] nf_iterate+0x4c/0x80
[81133.474401]  [<ffffffff819aeab4>] nf_hook_slow+0x64/0xc0
[81133.482615]  [<ffffffff81a211ec>] ip_rcv+0x2ec/0x380
[81133.490781]  [<ffffffff81a209f0>] ? 
ip_local_deliver_finish+0x130/0x130
[81133.498790]  [<ffffffff8197e140>] 
__netif_receive_skb_core+0x2a0/0x970
[81133.506714]  [<ffffffff81a56db8>] ? inet_gro_receive+0x1c8/0x200
[81133.514609]  [<ffffffff81980705>] __netif_receive_skb+0x15/0x70
[81133.522333]  [<ffffffff8198077e>] 
netif_receive_skb_internal+0x1e/0x80
[81133.529840]  [<ffffffff81980f3b>] napi_gro_receive+0x6b/0x90
[81133.537173]  [<ffffffff81740fb6>] rtl8169_poll+0x2e6/0x600
[81133.544444]  [<ffffffff810fc261>] ? 
__raw_callee_save___pv_queued_spin_unlock+0x11/0x20
[81133.551566]  [<ffffffff81981ad7>] net_rx_action+0x1f7/0x300
[81133.558412]  [<ffffffff810cb6c3>] __do_softirq+0x103/0x210
[81133.565353]  [<ffffffff810cb807>] run_ksoftirqd+0x37/0x60
[81133.572359]  [<ffffffff810e4de0>] smpboot_thread_fn+0x130/0x190
[81133.579215]  [<ffffffff810e4cb0>] ? sort_range+0x20/0x20
[81133.586042]  [<ffffffff810e1fae>] kthread+0xee/0x110
[81133.592792]  [<ffffffff810e1ec0>] ? 
kthread_create_on_node+0x1b0/0x1b0
[81133.599694]  [<ffffffff81af92df>] ret_from_fork+0x3f/0x70
[81133.606662]  [<ffffffff810e1ec0>] ? 
kthread_create_on_node+0x1b0/0x1b0
[81133.613445] Code: 77 28 5d c3 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 
00 00 48 8b 47 08 55 48 89 e5 48 85 c0 74 6a 48 8b 0f 48 85 c9 48 89 08 
74 04 <48> 89 41 08 84 d2 74 08 48 c7 47 08 00 00 00 00 f6 47 2a 10 48
[81133.627196] RIP  [<ffffffff8110fb18>] detach_if_pending+0x18/0x80
[81133.634036]  RSP <ffff880059bb7848>
[81133.640817] ---[ end trace eaf596e1fcf6a591 ]---
[81133.647521] Kernel panic - not syncing: Fatal exception in interrupt
--
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