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[xfs-masters] [Bug 9635] New: Unaligned accesses in xfs_file_readdir

To: xfs-masters@xxxxxxxxxxx
Subject: [xfs-masters] [Bug 9635] New: Unaligned accesses in xfs_file_readdir
From: bugme-daemon@xxxxxxxxxxxxxxxxxxx
Date: Tue, 25 Dec 2007 17:47:28 -0800 (PST)
Reply-to: xfs-masters@xxxxxxxxxxx
Sender: xfs-masters-bounce@xxxxxxxxxxx
http://bugzilla.kernel.org/show_bug.cgi?id=9635

           Summary: Unaligned accesses in xfs_file_readdir
           Product: File System
           Version: 2.5
     KernelVersion: 2.6.24-rc6
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: XFS
        AssignedTo: xfs-masters@xxxxxxxxxxx
        ReportedBy: jailbird@xxxxxxxxxxxxxxxx


Most recent kernel where this bug did not occur: 2.6.23
Distribution: Debian/lenny
Hardware Environment: API CS20D (2 x 833Mhz EV68AL Alpha CPUs)
Software Environment: 

Linux sky 2.6.24-rc6-mm1 #1 SMP Mon Dec 24 00:24:38 CST 2007 alpha GNU/Linux

Gnu C                  4.2.3
Gnu make               3.81
binutils               2.18.20071027
util-linux             2.13
mount                  2.13
module-init-tools      3.3-pre11
e2fsprogs              1.40.2
xfsprogs               2.9.4
Linux C Library        2.7
Dynamic linker (ldd)   2.7
Procps                 3.2.7
Net-tools              1.60
Console-tools          0.2.3
Sh-utils               5.97
udev                   114
Modules Loaded         xt_multiport xt_state ip6table_mangle ip6table_filter
ip6_tables iptable_mangle iptable_filter adm9240 hwmon_vid loop i2c_ali1535
i2c_ali15x3 i2c_core sd_mod ide_cd_mod cdrom generic sym53c8xx e100
scsi_transport_spi alim15x3 mii scsi_mod ide_core

(Note: -mm1 compile, however bug was introduced in 2.6.24-rc6 patch, not -mm1)

Problem Description:

kernel unaligned acc    : 270990 (pc=fffffc00011855f4,va=fffffc007e39204b)

From System.map:

fffffc0001185480 t xfs_file_readdir
fffffc0001185650 t xfs_hack_filldir

Steps to reproduce:

Boot.  ls a directory on a XFS filesystem.

Seems to be caused by the major xfs_file.c changes in the 2.6.24-rc6 patch.


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