linux-kernel - PANIC: double fault, error

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Date:	Wed, 23 Dec 2015 15:50:04 -0500 (EST)
From:	Bob Peterson <rpeterso@...hat.com>
To:	LKML <linux-kernel@...r.kernel.org>
Subject: PANIC: double fault, error_code: 0x0 on recent kernel

Hi,

Does this look familiar to anyone?
Granted, this was seen on a recent linux-gfs2/for-next kernel, but it
doesn't seem related to any of the GFS2 patches.

Regards,

Bob Peterson
Red Hat File Systems

[ 2083.844866] PANIC: double fault, error_code: 0x0
[ 2083.845020] CPU: 0 PID: 26262 Comm: d_doio Tainted: G        W       4.3.0+ #30
[ 2083.845020] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007
[ 2083.845020] task: ffff88003c09bc00 ti: ffff88002554c000 task.ti: ffff88002554c000
[ 2083.845020] RIP: 0010:[<ffffffffa035029d>]  [<ffffffffa035029d>] nodeid_to_addr.constprop.7+0xd/0x240 [dlm]
[ 2083.845020] RSP: 0000:ffff88003e344000  EFLAGS: 00010246
[ 2083.845020] RAX: 0000000000000000 RBX: ffff88003c6e2580 RCX: 00000001001b3824
[ 2083.845020] RDX: 0000000000000000 RSI: ffff88003e344058 RDI: 0000000000000003
[ 2083.845020] RBP: ffff88003e344010 R08: 646f6e203a6d6c64 R09: 636f73203a312065
[ 2083.845020] R10: 203a312065646f6e R11: 0000000000000a2d R12: ffff88003d0940e0
[ 2083.845020] R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000005248
[ 2083.845020] FS:  00007f9731857740(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000
[ 2083.845020] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2083.845020] CR2: ffff88003e343ff8 CR3: 0000000020cc6000 CR4: 00000000000006f0
[ 2083.845020] Stack:
[ 2083.845020]
[ 2083.845020] Call Trace:
[ 2083.845020]  <UNK>
[ 2083.845020] Code: 56 01 44 89 f9 44 89 e6 48 c7 c7 58 c5 35 a0 31 c0 e8 20 49 e3 e0 eb c2 e8 d1 5e d3 e0 90 0f 1f 44 00 00 55 48 89 e5 41 55 41 54 <53> 48 81 ec 88 00 00 00 8b 0d e9 11 01 00 65 48 8b 04 25 28 00
[ 2083.845020] Kernel panic - not syncing: Machine halted.
[ 2083.845020] CPU: 0 PID: 26262 Comm: d_doio Tainted: G        W       4.3.0+ #30
[ 2083.845020] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007
[ 2083.845020]  0000000000000000 00000000b4dd8c61 ffff88003fc04e88 ffffffff81327e80
[ 2083.845020]  ffffffff818e38c8 ffff88003fc04f08 ffffffff8118421e 0000000000000008
[ 2083.845020]  ffff88003fc04f18 ffff88003fc04eb8 00000000b4dd8c61 0000000000000020
[ 2083.845020] Call Trace:
[ 2083.845020]  <#DF>  [<ffffffff81327e80>] dump_stack+0x44/0x64
[ 2083.845020]  [<ffffffff8118421e>] panic+0xd8/0x21f
[ 2083.845020]  [<ffffffff8105fd01>] df_debug+0x31/0x40
[ 2083.845020]  [<ffffffff810188c7>] do_double_fault+0x87/0x100
[ 2083.845020]  [<ffffffff81692fc8>] double_fault+0x28/0x30
[ 2083.845020]  [<ffffffffa035029d>] ? nodeid_to_addr.constprop.7+0xd/0x240 [dlm]
[ 2083.845020]  <<EOE>>  <UNK>
[ 2083.845020] Kernel Offset: disabled
[ 2083.845020] ---[ end Kernel panic - not syncing: Machine halted.
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