linux-ext4 - Fw: [Bug 10976] New: Soft lockup on (intentionally) corrupted filesystem

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Message-Id: <20080624130425.7557e5e4.akpm@linux-foundation.org>
Date:	Tue, 24 Jun 2008 13:04:25 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	linux-ext4@...r.kernel.org
Subject: Fw: [Bug 10976] New: Soft lockup on (intentionally) corrupted
 filesystem



Begin forwarded message:

Date: Tue, 24 Jun 2008 12:42:00 -0700 (PDT)
From: bugme-daemon@...zilla.kernel.org
To: akpm@...uxfoundation.org
Subject: [Bug 10976] New: Soft lockup on (intentionally) corrupted filesystem


http://bugzilla.kernel.org/show_bug.cgi?id=10976

           Summary: Soft lockup on (intentionally) corrupted filesystem
           Product: File System
           Version: 2.5
     KernelVersion: 2.6.25.8 + patches for bug 10882 problems
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: ext3
        AssignedTo: akpm@...l.org
        ReportedBy: sliedes@...hut.fi


Distribution: Debian sid (unstable)
Hardware Environment: qemu x86
Software Environment: Minimal Debian sid
Problem Description:

Mounting one of the attached intentionally corrupted ext3 filesystems and
accessing it causes a soft lockup. I believe they probably are the same bug
(both happen in __log_wait_for_space()), but the backtraces vary quite a bit so
I attach two test cases.

My kernel is 2.6.25.8 + three patches posted by Duane Griffin for #10882,
namely (I hope I understand the git terminology right, at least you can grep
lkml archives for these):
  - 6ae4ecf..8019bf2
  - 7712682..bc030f4
  - 0b8cf80..ea0236b



Steps to reproduce:

1. bunzip2 one of the filesystem images
2. mount fs.img /mnt
3. ls /mnt


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