linux-ext4 - Re: ext3 fsx failures on 2.6.19-rc1

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Date:	Tue, 10 Oct 2006 14:30:59 +0200
From:	Jan Kara <jack@...e.cz>
To:	Badari Pulavarty <pbadari@...ibm.com>
Cc:	akpm@...l.org, esandeen@...hat.com,
	ext4 <linux-ext4@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	Dave Jones <davej@...hat.com>
Subject: Re: ext3 fsx failures on 2.6.19-rc1

  Hi,

> I am having fsx failures on 2.6.19-rc1.
  :(

> I don't have any useful information at this time to track it down.
> I am running 4 copies of fsx (+ fsstress) on a 1k filesystem and
> one copy of fsx dies.
  How long does it take? 

> fsx-linux[20667]: segfault at 00000000ffffffff rip 00002af0fe031690 rsp
> 00007fffacc03b88 error 4
> 
> READ BAD DATA: offset = 0xa352, size = 0x5fef
> OFFSET  GOOD    BAD     RANGE
> 0x df90 0x48e4  0x0000  0x   70
> operation# (mod 256) for the bad data unknown, check HOLE and EXTEND ops
  Hmm, so fsx-linux wrote something and read back zeros. Strange. Do you
know what that 'segfault' message means? I cannot find it in my copy of
fsx-linux...

								Honza
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