Theodore Ts'o 471320c756 ext4: check for zero length extent ...

commit 31d4f3a2f3 upstream.

Explicitly test for an extent whose length is zero, and flag that as a
corrupted extent.

This avoids a kernel BUG_ON assertion failure.

Tested: Without this patch, the file system image found in
tests/f_ext_zero_len/image.gz in the latest e2fsprogs sources causes a
kernel panic.  With this patch, an ext4 file system error is noted
instead, and the file system is marked as being corrupted.

https://bugzilla.kernel.org/show_bug.cgi?id=42859

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2012-04-02 09:27:19 -07:00

..

acl.c

userns: rename is_owner_or_cap to inode_owner_or_capable

2011-03-23 19:47:13 -07:00

acl.h

fs: provide rcu-walk aware permission i_ops

2011-01-07 17:50:29 +11:00

balloc.c

ext4: add flag to ext4_has_free_blocks

2011-05-25 07:41:26 -04:00

bitmap.c

ext4: Change unsigned long to unsigned int

2008-11-05 00:14:04 -05:00

block_validity.c

ext4: rename {exit,init}_ext4_*() to ext4_{exit,init}_*()

2010-10-27 21:30:14 -04:00

dir.c

ext4: Use ext4_error_file() to print the pathname to the corrupted inode

2011-01-10 12:10:55 -05:00

ext4_extents.h

ext4: use FIEMAP_EXTENT_LAST flag for last extent in fiemap

2011-06-06 00:06:52 -04:00

ext4_jbd2.c

ext4: remove unneeded ext4_journal_get_undo_access

2011-05-09 10:58:45 -04:00

ext4_jbd2.h

ext4: ignore EXT4_INODE_JOURNAL_DATA flag with delalloc

2012-04-02 09:27:19 -07:00

ext4.h

ext4: remove i_mutex lock in ext4_evict_inode to fix lockdep complaining

2011-11-11 09:37:16 -08:00

extents.c

ext4: check for zero length extent

2012-04-02 09:27:19 -07:00

file.c

ext4: Convert ext4 to new truncate calling convention

2011-05-25 17:39:48 -04:00

fsync.c

ext4: fix waiting and sending of a barrier in ext4_sync_file()

2011-05-24 12:00:54 -04:00

hash.c

ext4: Add support for non-native signed/unsigned htree hash algorithms

2008-10-28 13:21:44 -04:00

ialloc.c

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

2011-03-25 09:57:41 -07:00

inode.c

ext4: ignore EXT4_INODE_JOURNAL_DATA flag with delalloc

2012-04-02 09:27:19 -07:00

ioctl.c

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

2011-03-25 09:57:41 -07:00

Kconfig

ext4: Don't ask about supporting ext2/3 in ext4 if ext4 is not configured

2009-12-21 10:54:09 -05:00

Makefile

ext4: add support for multiple mount protection

2011-05-24 18:31:25 -04:00

mballoc.c

ext4: fix i_blocks/quota accounting when extent insertion fails

2011-08-04 21:58:39 -07:00

mballoc.h

ext4: remove alloc_semp

2011-05-09 21:52:36 -04:00

migrate.c

ext4: set extents flag when migrating file to use extents

2011-05-03 09:34:42 -04:00

mmp.c

ext4: add support for multiple mount protection

2011-05-24 18:31:25 -04:00

move_extent.c

ext4: Fix max file size and logical block counting of extent format file

2011-06-06 00:05:17 -04:00

namei.c

ext4: call ext4_handle_dirty_metadata with correct inode in ext4_dx_add_entry

2011-11-11 09:36:34 -08:00

page-io.c

ext4: handle EOF correctly in ext4_bio_write_page()

2011-12-21 12:57:44 -08:00

resize.c

ext4: unify the ext4_handle_release_buffer() api

2011-03-20 22:57:02 -04:00

super.c

ext4: fix undefined behavior in ext4_fill_flex_info()

2012-01-25 17:24:33 -08:00

symlink.c

ext4: symlink must be handled via filesystem specific operation

2010-05-16 02:00:00 -04:00

xattr_security.c

fs/vfs/security: pass last path component to LSM on inode creation

2011-02-01 11:12:29 -05:00

xattr_trusted.c

ext4: constify xattr_handler

2010-05-21 18:31:19 -04:00

xattr_user.c

ext4: constify xattr_handler

2010-05-21 18:31:19 -04:00

xattr.c

ext4: fix race in xattr block allocation path

2011-11-11 09:36:34 -08:00

xattr.h

fs/vfs/security: pass last path component to LSM on inode creation

2011-02-01 11:12:29 -05:00