Re: [next-20130114] Call-trace in LTP (lite) madvise02 test (block|mm|vfs related?)

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On Mon, Jan 14, 2013 at 8:28 PM, Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote:
> On Mon, Jan 14, 2013 at 7:56 PM, Jens Axboe <axboe@xxxxxxxxx> wrote:
>> On 2013-01-14 19:33, Sedat Dilek wrote:
>>> Hi,
>>>
>>> while running LTP lite on my next-20130114 kernel I hit this
>>> call-trace (file attached).
>>>
>>> Looks to me like problem in the block layer, but not sure.
>>> Might one of the experts have look at it?
>>
>> Really? 600kb of data to look through? Can't you just paste the actual
>> error, I can't even find it...
>>
>
> $ cat call-trace_ltplite_madvise02_next-20130114.txt
> Jan 14 17:47:14 fambox kernel: [ 1263.965957] ------------[ cut here
> ]------------
> Jan 14 17:47:14 fambox kernel: [ 1263.965989] Kernel BUG at
> ffffffff81328b2b [verbose debug info unavailable]
> Jan 14 17:47:14 fambox kernel: [ 1263.966022] invalid opcode: 0000 [#1] SMP
> Jan 14 17:47:14 fambox kernel: [ 1263.966046] Modules linked in:
> snd_hda_codec_hdmi snd_hda_codec_realtek joydev coretemp kvm_intel kvm
> snd_hda_intel snd_hda_codec arc4 iwldvm snd_hwdep snd_pcm
> ghash_clmulni_intel mac80211 aesni_intel i915 snd_page_alloc xts
> snd_seq_midi aes_x86_64 snd_seq_midi_event uvcvideo lrw gf128mul
> iwlwifi snd_rawmidi ablk_helper snd_seq i2c_algo_bit cryptd
> drm_kms_helper snd_timer videobuf2_vmalloc drm snd_seq_device
> videobuf2_memops psmouse parport_pc snd cfg80211 btusb rfcomm
> videobuf2_core bnep microcode ppdev soundcore videodev samsung_laptop
> wmi lp bluetooth serio_raw mei mac_hid hid_generic video lpc_ich
> parport usbhid hid r8169
> Jan 14 17:47:14 fambox kernel: [ 1263.966377] CPU 3
> Jan 14 17:47:14 fambox kernel: [ 1263.966388] Pid: 7803, comm:
> madvise02 Not tainted 3.8.0-rc3-next20130114-5-iniza-generic #1
> SAMSUNG ELECTRONICS CO., LTD.
> 530U3BI/530U4BI/530U4BH/530U3BI/530U4BI/530U4BH
> Jan 14 17:47:14 fambox kernel: [ 1263.966450] RIP:
> 0010:[<ffffffff81328b2b>]  [<ffffffff81328b2b>]
> blk_flush_plug_list+0x1eb/0x210
> Jan 14 17:47:14 fambox kernel: [ 1263.966508] RSP:
> 0018:ffff88000d933e58  EFLAGS: 00010287
> Jan 14 17:47:14 fambox kernel: [ 1263.966532] RAX: 0000000091827364
> RBX: ffff88000d933e68 RCX: 0000000000000000
> Jan 14 17:47:14 fambox kernel: [ 1263.966566] RDX: 0000000000000000
> RSI: 0000000000000000 RDI: ffff88000d933f10
> Jan 14 17:47:14 fambox kernel: [ 1263.966614] RBP: ffff88000d933eb8
> R08: 0000000000000003 R09: 0000000000000000
> Jan 14 17:47:14 fambox kernel: [ 1263.966656] R10: 00007fff3d62c9b0
> R11: 0000000000000206 R12: 0000000000000000
> Jan 14 17:47:14 fambox kernel: [ 1263.966696] R13: 0000000000001000
> R14: ffff88000d933f10 R15: ffff88000d933f10
> Jan 14 17:47:14 fambox kernel: [ 1263.966736] FS:
> 00007f56bcbc2700(0000) GS:ffff88011fac0000(0000)
> knlGS:0000000000000000
> Jan 14 17:47:14 fambox kernel: [ 1263.966780] CS:  0010 DS: 0000 ES:
> 0000 CR0: 0000000080050033
> Jan 14 17:47:14 fambox kernel: [ 1263.966813] CR2: 00007f56bc6ec060
> CR3: 000000000bf66000 CR4: 00000000000407e0
> Jan 14 17:47:14 fambox kernel: [ 1263.966848] DR0: 0000000000000000
> DR1: 0000000000000000 DR2: 0000000000000000
> Jan 14 17:47:14 fambox kernel: [ 1263.966885] DR3: 0000000000000000
> DR6: 00000000ffff0ff0 DR7: 0000000000000400
> Jan 14 17:47:14 fambox kernel: [ 1263.966921] Process madvise02 (pid:
> 7803, threadinfo ffff88000d932000, task ffff88000d9f2e40)
> Jan 14 17:47:14 fambox kernel: [ 1263.966963] Stack:
> Jan 14 17:47:14 fambox kernel: [ 1263.966978]  0000000000000001
> 0000000000000001 ffff88000d933e68 ffff88000d933e68
> Jan 14 17:47:14 fambox kernel: [ 1263.967024]  ffff88000d933ef8
> ffffffff8114b77c ffff88000d933ec0 ffff88000d933f10
> Jan 14 17:47:14 fambox kernel: [ 1263.967071]  0000000000000000
> 0000000000001000 0000000000010000 ffff88000d933f10
> Jan 14 17:47:14 fambox kernel: [ 1263.967118] Call Trace:
> Jan 14 17:47:14 fambox kernel: [ 1263.967137]  [<ffffffff8114b77c>] ?
> vm_mmap_pgoff+0xbc/0xe0
> Jan 14 17:47:14 fambox kernel: [ 1263.967173]  [<ffffffff81328b68>]
> blk_finish_plug+0x18/0x50
> Jan 14 17:47:14 fambox kernel: [ 1263.967209]  [<ffffffff811544d8>]
> sys_madvise+0xc8/0x3a0
> Jan 14 17:47:14 fambox kernel: [ 1263.967247]  [<ffffffff816ba0e9>] ?
> do_page_fault+0x39/0x50
> Jan 14 17:47:14 fambox kernel: [ 1263.967288]  [<ffffffff816be79d>]
> system_call_fastpath+0x1a/0x1f
> Jan 14 17:47:14 fambox kernel: [ 1263.967331] Code: 4d 85 ff 74 0d 44
> 89 e2 89 c6 4c 89 ff e8 be b5 ff ff 4c 89 ef 57 9d 66 66 90 66 90 48
> 83 c4 38 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <0f> 0b 31 d2 be ed ff ff ff
> 4c 89 f7 89 45 a8 e8 91 f9 ff ff 8b
> Jan 14 17:47:14 fambox kernel: [ 1263.967589] RIP
> [<ffffffff81328b2b>] blk_flush_plug_list+0x1eb/0x210
> Jan 14 17:47:14 fambox kernel: [ 1263.967630]  RSP <ffff88000d933e58>
> Jan 14 17:47:14 fambox kernel: [ 1263.989553] ---[ end trace
> 19e1575014ab42a7 ]---
>

Looks like this is the fix from Sasha [1].
Culprit commit is [2].
Testing...

- Sedat -

[1] https://patchwork.kernel.org/patch/1973481/
[2] http://git.kernel.org/?p=linux/kernel/git/next/linux-next.git;a=commitdiff;h=0d18d770b9180ffc2c3f63b9eb8406ef80105e05

> - Sedat -
>
>> --
>> Jens Axboe
>>
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