From: Alexander Beregalov <a.beregalov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Felix Blyakher <felixb-sJ/iWh9BUns@public.gmane.org>
Cc: Kernel Testers List
<kernel-testers-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
xfs-VZNHf3L845pBDgjK7y7TUQ@public.gmane.org
Subject: Re: 2.6.30-rc6: BUG at fs/xfs/support/debug.c:109!
Date: Tue, 2 Jun 2009 12:21:47 +0400 [thread overview]
Message-ID: <a4423d670906020121v131c9c12t35c3ffc7df048ee9@mail.gmail.com> (raw)
In-Reply-To: <D7FB8214-6C2B-4D13-9B50-C53CB74885C2-sJ/iWh9BUns@public.gmane.org>
2009/6/1 Felix Blyakher <felixb-sJ/iWh9BUns@public.gmane.org>:
>
> On Jun 1, 2009, at 12:38 PM, Alexander Beregalov wrote:
>
>> It was Gentoo's `emerge --metadata`. It reads many small files (ebuilds).
>> I am sure it cannot be easily reproduced.
>
> Right. Otherwise many more people would've reported it.
>
>> It runs fine everyday. I do not have a testcase.
>> I can try to run it forever in loop if you need.
>
> Yes, that will be good.
> The problem is that the traces are confusing. From one
> side readdir stack makes sense based on your description
> of the load, but OTOH the panic is from xfs_bmapi(), which
> doesn't fit in that backtrace at all. It seems like
> backtrace is from the concurrently running different thread.
> Don't have good idea for this bug atm.
The host is still running, SysRq-W shows two precesses with the same
stacktraces.
SysRq : Show Blocked State
task PC stack pid father
emerge D 0000000000000000 3856 8399 8387
ffff880078da7b48 0000000000000046 ffff8800074b4b40 ffff880078da7af4
0000000000000001 000000000000d948 00000000001d2000 0000000000000001
ffff8800074b4b40 ffff88007f4725a0 ffff8800074b4eb8 0000000100000246
Call Trace:
[<ffffffff802e7328>] ? do_lookup+0xd8/0x270
[<ffffffff806d707d>] __mutex_lock_common+0x16d/0x4f0
[<ffffffff802e7328>] ? do_lookup+0xd8/0x270
[<ffffffff80280eb0>] ? trace_hardirqs_on+0x20/0x40
[<ffffffff802e7328>] ? do_lookup+0xd8/0x270
[<ffffffff806d7528>] mutex_lock_nested+0x48/0x70
[<ffffffff802e7328>] do_lookup+0xd8/0x270
[<ffffffff802e7776>] __link_path_walk+0x2b6/0xf00
[<ffffffff802e884c>] ? do_path_lookup+0xec/0x200
[<ffffffff802e884c>] ? do_path_lookup+0xec/0x200
[<ffffffff802e863e>] path_walk+0x7e/0x100
[<ffffffff802e8816>] do_path_lookup+0xb6/0x200
[<ffffffff802e9bd8>] do_filp_open+0xf8/0x9e0
[<ffffffff802f6199>] ? alloc_fd+0x49/0x170
[<ffffffff806d987f>] ? _spin_unlock+0x3f/0x80
[<ffffffff802f6289>] ? alloc_fd+0x139/0x170
[<ffffffff802d7f6b>] do_sys_open+0x9b/0x130
[<ffffffff802d806e>] sys_open+0x2e/0x50
[<ffffffff8020ba6b>] system_call_fastpath+0x16/0x1b
emerge D 0000000000000000 3280 1643 1901
ffff88000f43bb48 0000000000000046 ffff88002dc33870 ffff88000f43baf4
0000000000000001 000000000000d948 00000000001d2000 0000000000000003
ffff88002dc33870 ffff88007ea30000 ffff88002dc33be8 0000000300000246
Call Trace:
[<ffffffff802e7328>] ? do_lookup+0xd8/0x270
[<ffffffff802e7328>] ? do_lookup+0xd8/0x270
[<ffffffff806d707d>] __mutex_lock_common+0x16d/0x4f0
[<ffffffff802e7328>] ? do_lookup+0xd8/0x270
[<ffffffff80280eb0>] ? trace_hardirqs_on+0x20/0x40
[<ffffffff802e7328>] ? do_lookup+0xd8/0x270
[<ffffffff806d7528>] mutex_lock_nested+0x48/0x70
[<ffffffff802e7328>] do_lookup+0xd8/0x270
[<ffffffff802e7776>] __link_path_walk+0x2b6/0xf00
[<ffffffff802e884c>] ? do_path_lookup+0xec/0x200
[<ffffffff802e884c>] ? do_path_lookup+0xec/0x200
[<ffffffff802e863e>] path_walk+0x7e/0x100
[<ffffffff802e8816>] do_path_lookup+0xb6/0x200
[<ffffffff802e9bd8>] do_filp_open+0xf8/0x9e0
[<ffffffff802f6199>] ? alloc_fd+0x49/0x170
[<ffffffff806d987f>] ? _spin_unlock+0x3f/0x80
[<ffffffff802f6289>] ? alloc_fd+0x139/0x170
[<ffffffff802d7f6b>] do_sys_open+0x9b/0x130
[<ffffffff802d806e>] sys_open+0x2e/0x50
[<ffffffff8020ba6b>] system_call_fastpath+0x16/0x1b
I will try to reproduce it.
next prev parent reply other threads:[~2009-06-02 8:21 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-01 15:22 2.6.30-rc6: BUG at fs/xfs/support/debug.c:109! Alexander Beregalov
[not found] ` <a4423d670906010822l6e8e112dl3d6f7de9e2179850-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-06-01 16:09 ` Felix Blyakher
[not found] ` <B5660F1A-7940-4E4A-92E8-8C0F93C274BD-sJ/iWh9BUns@public.gmane.org>
2009-06-01 17:38 ` Alexander Beregalov
[not found] ` <a4423d670906011038qd809ebay22aebca5aaf271a4-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-06-01 17:58 ` Felix Blyakher
[not found] ` <D7FB8214-6C2B-4D13-9B50-C53CB74885C2-sJ/iWh9BUns@public.gmane.org>
2009-06-02 8:21 ` Alexander Beregalov [this message]
2009-06-02 11:32 ` Alexander Beregalov
2009-06-01 17:43 ` Alexander Beregalov
[not found] ` <a4423d670906011043v52426cb9s547547479b5f885d-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-06-01 17:53 ` Felix Blyakher
2009-09-21 3:42 ` Eric Sandeen
2009-06-04 9:23 ` Dave Chinner
[not found] ` <20090604092330.GT16929-CJ6yYqJ1V6CgjvmRZuSThA@public.gmane.org>
2009-06-05 9:23 ` Alexander Beregalov
[not found] ` <a4423d670906050223p4e72ceaaqa1dd942a2e52d1a3-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2009-07-01 16:21 ` Alexander Beregalov
[not found] <824092896.830901246499419777.JavaMail.root@zmail05.collab.prod.int.phx2.redhat.com>
[not found] ` <824092896.830901246499419777.JavaMail.root-rwXUz/BPrj9+R5eDjrG6zsCp5Q1pQRjfhaY/URYTgi6ny3qCrzbmXA@public.gmane.org>
2009-07-02 1:52 ` Lachlan McIlroy
[not found] ` <584076313.830951246499556455.JavaMail.root-rwXUz/BPrj9+R5eDjrG6zsCp5Q1pQRjfhaY/URYTgi6ny3qCrzbmXA@public.gmane.org>
2009-07-02 10:38 ` Alexander Beregalov
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