linux-kernel - [lkp] [vfs] 7cfe885cfd: BUG: unable to handle kernel paging request at 0000005a000001cd

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Date:	Mon, 29 Feb 2016 09:11:04 +0800
From:	kernel test robot <ying.huang@...ux.intel.com>
TO:	Waiman Long <Waiman.Long@....com>
CC:	0day robot <fengguang.wu@...el.com>
Subject: [lkp] [vfs] 7cfe885cfd: BUG: unable to handle kernel paging request
 at 0000005a000001cd

FYI, we noticed the below changes on

https://github.com/0day-ci/linux Waiman-Long/lib-percpu-list-Per-cpu-list-with-associated-per-cpu-locks/20160226-081224
commit 7cfe885cfd258695fde078e95b5a4b9ff030ccd0 ("vfs: Use per-cpu list for superblock's inode list")


LKP: rebooting
error: 'lkp-bootstrap' exited outside the expected code flow.
unable to connect to system bus: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory
[    9.485627] BUG: unable to handle kernel paging request at 0000005a000001cd
[    9.486432] IP: [<ffffffff811341dd>] __lock_acquire+0x245/0x175f
[    9.487149] PGD 9be6067 PUD 0 
[    9.487524] Oops: 0002 [#1] DEBUG_PAGEALLOC 
[    9.488009] CPU: 0 PID: 643 Comm: sync Not tainted 4.5.0-rc5-00004-g7cfe885 #1
[    9.488771] task: ffff8800085d0980 ti: ffff88000a554000 task.ti: ffff88000a554000
[    9.489553] RIP: 0010:[<ffffffff811341dd>]  [<ffffffff811341dd>] __lock_acquire+0x245/0x175f
[    9.490505] RSP: 0018:ffff88000a557e00  EFLAGS: 00010006
[    9.491061] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[    9.491802] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880014ee5ff8
[    9.492544] RBP: ffff88000a557e58 R08: 0000000000000000 R09: 0000000000000000
[    9.493281] R10: 0000005a00000035 R11: 0000000000000000 R12: 0000000000000000
[    9.494025] R13: 0000000000000000 R14: ffff880014ee5ff8 R15: ffff8800085d0980
[    9.494769] FS:  00007f0ff2734700(0000) GS:ffffffff83c3f000(0000) knlGS:0000000000000000
[    9.495608] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.496209] CR2: 0000005a000001cd CR3: 000000000a5be000 CR4: 00000000000006b0
[    9.496959] Stack:
[    9.497181]  ffffffff84c3fa20 ffff88000a557e70 0000000000000002 0000000000000000
[    9.498019]  ffffffff84c3fa30 0000000013c03c78 ffff880014ee5fe0 0000000000000000
[    9.498856]  0000000000000000 0000000000000000 0000000000000000 ffff88000a557ec0
[    9.499689] Call Trace:
[    9.499955]  [<ffffffff81135de9>] lock_acquire+0x10b/0x20c
[    9.500532]  [<ffffffff812d53ba>] ? iterate_bdevs+0xa5/0x1d4
[    9.501122]  [<ffffffff82c591ff>] _raw_spin_lock+0x4f/0x6e
[    9.501712]  [<ffffffff812d53ba>] ? iterate_bdevs+0xa5/0x1d4
[    9.502298]  [<ffffffff812d53ba>] iterate_bdevs+0xa5/0x1d4
[    9.502874]  [<ffffffff812c6e99>] ? fdatawait_one_bdev+0x28/0x28
[    9.503494]  [<ffffffff812c70ab>] sys_sync+0x8b/0xd0
[    9.504032]  [<ffffffff82c5a6f3>] entry_SYSCALL_64_fastpath+0x16/0x76
[    9.504714] Code: db 89 d8 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 44 89 e0 4d 8b 54 c6 08 48 83 05 8c a9 66 03 01 4d 85 d2 0f 84 48 fe ff ff <41> ff 82 98 01 00 00 48 83 05 0c ac 66 03 01 45 8b 9f a8 05 00 
[    9.507723] RIP  [<ffffffff811341dd>] __lock_acquire+0x245/0x175f
[    9.508442]  RSP <ffff88000a557e00>
[    9.508821] CR2: 0000005a000001cd
[    9.509175] ---[ end trace 47c7c54fdfc48c8d ]---
[    9.509663] Kernel panic - not syncing: Fatal exception





Thanks,
Kernel Test Robot

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