From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gerhard Kulzer <gerhard@kulzer.net>
Subject: Re: system crash at mounting of btrfs
Date: Fri, 8 Oct 2010 16:49:11 +0000 (UTC)
Message-ID: <loom.20101008T182314-909@post.gmane.org>
References: <4CAEBD78.7000002@wpkg.org>
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To: linux-btrfs@vger.kernel.org
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Tomasz Chmielewski <mangoo <at> wpkg.org> writes:

> 
> You could try:
> 
> http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.36-rc7-maverick/
> 

Alright I tried 2.6.36-rc7 to no avail, same crashing behaviour.

This is a kernel trace (from Intel-Atom netbook => 32bit) at which 
the machine freezes after trying to mount the btrfs SSD drive:

----trace---
Pid: 1882, comm: mount Tainted: G D 2.6.36-020636rc7-generic
EIP: 0060:[>f81039ef>] EFLAGS: 00010283 CPU:0
EIP is at btrfs_test_super+0xf/0x30 [btrfs]
EAX: 000000000 EBX: e2e6ca00 ECX: c0221090 EDX: f1689b80
ESI: f81039e0 EDI: f816d318 EBP: d3001e78 ESP: d300115c
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 068
Process mount (pid: 1882, ti=d3000000 task=ef54cc20 task.ti=d300000000)
Stack:
 c02221af c0221090 f816d300 00000000 fffffff3 00000000 f6eb7a00 d3001ee8
<0> f8103e28 f1689b80 d3001ea8 d3001eb4 e62670c0 00000000 eee22b00 00000000
<0> f816d300 00000000 000000d0 00000000 00000000 e0a18e00 f1689b80 00000004
Call Trace:
 [<c02221af>] ? sget+0x3f/0x1f0
 [<c0221090>] ? set_anon_super+0x0/0xe0
 [<f8103e28>] ? btrfs_get_sb+0x108/0x2c0 [btrfs]
 [<c021671f>] ? __alloc_percpu+0xf/0x20
 [<c0221f4e>] ? vfs_kern_mount+0x6e/0x1b0
 [<c0235bb5>] ? get_fs_type+0x35/0xa0
 [<c02220ee>] ? do_kern_mount+0x3e/0x80
 [<c0238869>] ? do_new_mount+0x69/0xa0
 [<c0238b48>] ? do_mount+0x188/0x1a0
 [<c0238bcd>] ? sys_mount+0x6d/0xa0
 [<c0102cdf>] ? sysenter_do_call+0x12/0x28
Code: eb dc ba c0 02 00 00 b8 34 6d 16 f8 e8 1b ab 04 c8 eb d6 89 f6 
8d bc 27 00 00 00 00 55 89 e5 0f 1f 44 00 00 8b 80 7c 01 00 00 5d 
<8b> 80 14 01 00 00 39 90 ec 1d 00 00 0f 94 c0 0f b6 c0 c3 8d b4
EIP: [<f71039ef>] btrfs_test_super+0xf/0x30 [btrfs] SS:ESP 0068:d3001e5c
CR2: 0000000000000114
---[ end trace ]---