linux-kernel - [lkp] [wext] 6a9a24baba: BUG: spinlock bad magic on CPU#0, swapper/0/1

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Date:	Fri, 29 Jan 2016 15:31:10 +0800
From:	kernel test robot <ying.huang@...ux.intel.com>
TO:	Johannes Berg <johannes.berg@...el.com>
CC:	Beniamino Galvani <bgalvani@...hat.com>
Subject: [lkp] [wext] 6a9a24baba: BUG: spinlock bad magic on CPU#0,
 swapper/0/1

FYI, we noticed the below changes on

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
commit 6a9a24baba28599b0bb8453ae6a6a06ad79701a0 ("wext: fix message delay/ordering")


[    0.821194] e820: reserve RAM buffer [mem 0x167e0000-0x17ffffff]
[    0.823299] NET: Registered protocol family 23
[    0.823299] NET: Registered protocol family 23
[    0.824526] BUG: spinlock bad magic on CPU#0, swapper/0/1
[    0.824526] BUG: spinlock bad magic on CPU#0, swapper/0/1
[    0.826041]  lock: init_net+0xe78/0xf00, .magic: 00000000, .owner: swapper/0/1, .owner_cpu: 0
[    0.826041]  lock: init_net+0xe78/0xf00, .magic: 00000000, .owner: swapper/0/1, .owner_cpu: 0
[    0.828388] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.0-03435-g6a9a24b #1
[    0.828388] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.0-03435-g6a9a24b #1
[    0.830342] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[    0.830342] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[    0.832868]  ffffffff886ed7f8
[    0.832868]  ffffffff886ed7f8 ffff8800131b7d88 ffff8800131b7d88 ffffffff87eb8f86 ffffffff87eb8f86 ffff8800131b2040 ffff8800131b2040

[    0.835143]  ffff8800131b7da8
[    0.835143]  ffff8800131b7da8 ffffffff87d25897 ffffffff87d25897 ffffffff886ed7f8 ffffffff886ed7f8 ffffffff886ed7f8 ffffffff886ed7f8

[    0.837376]  ffff8800131b7dc0
[    0.837376]  ffff8800131b7dc0 ffffffff87d25b10 ffffffff87d25b10 0000000000000286 0000000000000286 ffff8800131b7de0 ffff8800131b7de0

[    0.842451] Call Trace:
[    0.842451] Call Trace:
[    0.843040]  [<ffffffff87eb8f86>] dump_stack+0x4b/0x63
[    0.843040]  [<ffffffff87eb8f86>] dump_stack+0x4b/0x63
[    0.844370]  [<ffffffff87d25897>] spin_dump+0x78/0xbb
[    0.844370]  [<ffffffff87d25897>] spin_dump+0x78/0xbb
[    0.845662]  [<ffffffff87d25b10>] do_raw_spin_unlock+0x64/0xba
[    0.845662]  [<ffffffff87d25b10>] do_raw_spin_unlock+0x64/0xba
[    0.847114]  [<ffffffff88123874>] _raw_spin_unlock_irqrestore+0x2c/0x5d
[    0.847114]  [<ffffffff88123874>] _raw_spin_unlock_irqrestore+0x2c/0x5d
[    0.848654]  [<ffffffff8807c341>] skb_dequeue+0x59/0x67
[    0.848654]  [<ffffffff8807c341>] skb_dequeue+0x59/0x67
[    0.849874]  [<ffffffff880edfe4>] wireless_nlevent_flush+0x54/0x8d
[    0.849874]  [<ffffffff880edfe4>] wireless_nlevent_flush+0x54/0x8d
[    0.851321]  [<ffffffff880ee02b>] wext_netdev_notifier_call+0xe/0x15
[    0.851321]  [<ffffffff880ee02b>] wext_netdev_notifier_call+0xe/0x15
[    0.853020]  [<ffffffff8808aa37>] register_netdevice_notifier+0x8a/0x1b9
[    0.853020]  [<ffffffff8808aa37>] register_netdevice_notifier+0x8a/0x1b9
[    0.854689]  [<ffffffff8895e4f6>] ? wext_pernet_init+0x4a/0x4a
[    0.854689]  [<ffffffff8895e4f6>] ? wext_pernet_init+0x4a/0x4a
[    0.856159]  [<ffffffff8895e506>] wireless_nlevent_init+0x10/0x22
[    0.856159]  [<ffffffff8895e506>] wireless_nlevent_init+0x10/0x22
[    0.857556]  [<ffffffff87c003d9>] do_one_initcall+0xb3/0x1fa
[    0.857556]  [<ffffffff87c003d9>] do_one_initcall+0xb3/0x1fa
[    0.858853]  [<ffffffff87cf5024>] ? parse_args+0x26b/0x4c4
[    0.858853]  [<ffffffff87cf5024>] ? parse_args+0x26b/0x4c4
[    0.860344]  [<ffffffff889170c2>] kernel_init_freeable+0x10f/0x194
[    0.860344]  [<ffffffff889170c2>] kernel_init_freeable+0x10f/0x194
[    0.861889]  [<ffffffff881168ac>] ? rest_init+0xcc/0xcc
[    0.861889]  [<ffffffff881168ac>] ? rest_init+0xcc/0xcc
[    0.863210]  [<ffffffff881168ba>] kernel_init+0xe/0xde
[    0.863210]  [<ffffffff881168ba>] kernel_init+0xe/0xde
[    0.864587]  [<ffffffff8812462f>] ret_from_fork+0x3f/0x70
[    0.864587]  [<ffffffff8812462f>] ret_from_fork+0x3f/0x70
[    0.866178]  [<ffffffff881168ac>] ? rest_init+0xcc/0xcc
[    0.866178]  [<ffffffff881168ac>] ? rest_init+0xcc/0xcc
[    0.867927] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[    0.867927] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[    0.870286] clocksource: Switched to clocksource kvm-clock


Thanks,
Kernel Test Robot

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