linux/fs/ext4
Theodore Ts'o 31d4f3a2f3 ext4: check for zero length extent
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>
Cc: stable@kernel.org
2012-03-11 23:30:16 -04:00
..
acl.c switch posix_acl_equiv_mode() to umode_t * 2011-08-01 02:10:06 -04:00
acl.h fs: take the ACL checks to common code 2011-07-25 14:30:23 -04:00
balloc.c ext4: fix balloc.c printk-format-warning 2012-02-20 17:57:24 -05:00
bitmap.c ext4: Change unsigned long to unsigned int 2008-11-05 00:14:04 -05:00
block_validity.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00
dir.c ext4: remove an unneeded NULL check in __ext4_check_dir_entry() 2012-02-20 17:53:05 -05:00
ext4_extents.h ext4: Fix bigalloc quota accounting and i_blocks value 2011-09-09 19:04:51 -04:00
ext4_jbd2.c jbd2: add debugging information to jbd2_journal_dirty_metadata() 2011-09-04 10:18:14 -04:00
ext4_jbd2.h ext4: expand commit callback and 2012-02-20 17:53:02 -05:00
ext4.h ext4: add comments to definition of ext4_io_end_t 2012-03-05 10:40:22 -05:00
extents.c ext4: check for zero length extent 2012-03-11 23:30:16 -04:00
file.c Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2011-11-02 10:06:20 -07:00
fsync.c ext4: fix race between sync and completed io work 2012-03-05 10:29:52 -05:00
hash.c ext4: Add support for non-native signed/unsigned htree hash algorithms 2008-10-28 13:21:44 -04:00
ialloc.c ext4: fix race when setting bitmap_uptodate flag 2012-02-20 17:52:46 -05:00
indirect.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00
inode.c ext4: clean up the flags passed to __blockdev_direct_IO 2012-03-05 10:19:52 -05:00
ioctl.c Merge branch 'for_linus' into for_linus_merged 2012-01-10 11:54:07 -05:00
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: move ext4_ind_* functions from inode.c to indirect.c 2011-06-27 19:40:50 -04:00
mballoc.c ext4: remove EXT4_MB_{BITMAP,BUDDY} macros 2012-02-20 17:54:06 -05:00
mballoc.h ext4: remove EXT4_MB_{BITMAP,BUDDY} macros 2012-02-20 17:54:06 -05:00
migrate.c ext4: using PTR_ERR() on the wrong variable in ext4_ext_migrate() 2012-02-20 17:53:06 -05:00
mmp.c ext4: Fix endianness bug when reading the MMP block 2012-02-27 01:09:03 -05:00
move_extent.c ext4: add some tracepoints in ext4/extents.c 2011-09-09 19:18:51 -04:00
namei.c ext4: format flag in dx_probe() 2012-02-20 23:09:36 -05:00
page-io.c ext4: don't release page refs in ext4_end_bio() 2012-03-05 10:40:15 -05:00
resize.c ext4: fix resize when resizing within single group 2012-02-20 23:02:06 -05:00
super.c ext4: try to deprecate noacl and noxattr_user mount options 2012-03-04 22:06:20 -05:00
symlink.c ext4: symlink must be handled via filesystem specific operation 2010-05-16 02:00:00 -04:00
truncate.h ext4: move common truncate functions to header file 2011-06-27 19:16:04 -04:00
xattr_security.c Merge branch 'for_linus' into for_linus_merged 2012-01-10 11:54:07 -05:00
xattr_trusted.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00
xattr_user.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00
xattr.c ext4: avoid deadlock on sync-mounted FS w/o journal 2012-02-20 23:06:18 -05:00
xattr.h fs/vfs/security: pass last path component to LSM on inode creation 2011-02-01 11:12:29 -05:00