RHBA-2013:1689 - Bug Fix Advisory

Topic

Updated e2fsprogs packages that fix several bugs are now available for Red Hat
Enterprise Linux 6.

Description

The e2fsprogs packages provide a number of utilities for creating, checking,
modifying, and correcting any inconsistencies in the ext2 file systems.

This update fixes the following bugs:

• Previously, the e2fsck utility was unable to detect inconsistencies related to

overlapping interior or leaf nodes in the extent tree. As a consequence, some of
ext4 extent tree corruptions were not detected or repaired by e2fsck but they
were detected by the kernel at run time. With this update, e2fsck is able to
detect and repair the described problems as expected. (BZ#922847)

• Previously, the e2fsck utility incorrectly detected uninitialized extents past

end of file (EOF) as invalid. Consequently, e2fsck identified pre-allocated
blocks past EOF as corrupt. This bug has been fixed and e2fsck now identifies
uninitialized extents past EOF correctly. (BZ#994615)

• The resize2fs utility did not properly handle resizing of an ext4 file system

to a smaller size. As a consequence, files containing many extents could become
corrupted if they were moved during the resize process. With this update,
resize2fs maintains a consistent extent tree when moving files containing many
extents, and such files no longer become corrupted in the described scenario.
(BZ#873201)

• Previously, the resize2fs utility did not correctly relocate inode and block

bitmaps when resizing an ext4 file system to a smaller size. Consequently, some
file systems became corrupted when the bitmaps were not moved within the new
file system size. A patch has been provided to address this bug and resize2fs
now maintains a consistent file system in the described scenario. (BZ#974975)

• Previously, the e2fsck utility failed to store information about file system

errors correctly. Consequently, entries in the journal were sometimes not
properly propagated to the file system superblock. This bug has been fixed and
e2fsck now handles all file system errors as expected. (BZ#885083)

• Previously, the e2fsck utility did not clear the error log when processing an

ext4 file system. Consequently, e2fsck stored detailed error information in the
ext4 file system superblock and returned it periodically upon mounting. With
this update, the error log is cleared when e2fsck completes and the redundant
error messages are no longer returned. (BZ#895679)

• Prior to this update, the filefrag utility occasionally reported incorrect

extent counts. A patch has been applied to address this problem and extents are
now counted correctly. (BZ#927541)

Users of e2fsprogs are advised to upgrade to these updated packages, which fix
these bugs.

Solution

Before applying this update, make sure all previously released errata relevant
to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red
Hat Network to apply this update are available at
https://access.redhat.com/site/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 873201 - Error : EXT4-fs error (device sda8): ext4_ext_search_left: inode #8126473: (comm db2sysc) ix (60672) != EXT_FIRST_INDEX (0) (depth 1)! leads to DB2 instance to crash
• BZ - 885083 - Backport commit '63b3913dbc0bc7cdf8a63f3bdb0c8d7d605e9a40' and '6d75685e2b76f4099589ad33732cf59f279b5d65' from upstream e2fsprogs to RHEL6 e2fsprogs
• BZ - 927541 - filefrag: filefrag -v reports wrong extent count
• BZ - 994615 - e2fsck incorrectly detects uninit extents past EOF as invalid

CVEs

(none)

References

(none)