linux-ext4 - [Bug 32182] EXT4-fs error: bad header/extent

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 6 Jun 2011 19:59:06 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 32182] EXT4-fs error: bad header/extent

https://bugzilla.kernel.org/show_bug.cgi?id=32182


Honore Doktorr <hdfssk@...il.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hdfssk@...il.com




--- Comment #7 from Honore Doktorr <hdfssk@...il.com>  2011-06-06 19:59:05 ---
I hit this problem with 2.6.35.13 after a power outage. The affected inode was
empty & had no extents - these commands just returned nothing (was using
"debugfs 1.41.14 (22-Dec-2010)"):

# debugfs -R 'cat <122877>' /dev/mapper/Fedora-FedoraSystem
debugfs 1.41.14 (22-Dec-2010)
# debugfs -R 'dump_extents <122877>' /dev/mapper/Fedora-FedoraSystem
debugfs 1.41.14 (22-Dec-2010)

The file using this inode wouldn't respond to shell commands:

# find -inum 122877
/usr/libexec/gdm-simple-slave
# stat gdm-simple-slave
stat: cannot stat `gdm-simple-slave': Input/output error
# rm gdm-simple-slave 
rm: cannot remove `gdm-simple-slave': Input/output error

Multiple fsck.ext4 runs didn't fix things. I eventually made the offending file
go away - I've no idea if this procedure is safe, or a good idea! - with these
commands.

# debugfs -R 'testi <122877>' /dev/mapper/Fedora-FedoraSystem debugfs 1.41.14
(22-Dec-2010)
Inode 122877 is marked in use
# debugfs -w -R 'kill_file <122877>' /dev/mapper/Fedora-FedoraSystem
debugfs 1.41.14 (22-Dec-2010)

# debugfs -R 'testi <122877>' /dev/mapper/Fedora-FedoraSystem 
debugfs 1.41.14 (22-Dec-2010)
Inode 122877 is not in use
# ls /usr/libexec/gdm-simple-slave
ls: cannot access /usr/libexec/gdm-simple-slave: Input/output error
# debugfs -w -R 'rm /usr/libexec/gdm-simple-slave'
/dev/mapper/Fedora-FedoraSystem 
debugfs 1.41.14 (22-Dec-2010)

# ls /usr/libexec/gdm-simple-slave
ls: cannot access /usr/libexec/gdm-simple-slave: No such file or directory
• ls gdm*
ls: cannot access gdm*: No such file or directory

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html