linux/fs/ext4
Theodore Ts'o f70f362b4a ext4: Avoid crashing on NULL ptr dereference on a filesystem error
If the EOFBLOCK_FL flag is set when it should not be and the inode is
zero length, then eh_entries is zero, and ex is NULL, so dereferencing
ex to print ex->ee_block causes a kernel OOPS in
ext4_ext_map_blocks().

On top of that, the error message which is printed isn't very helpful.
So we fix this by printing something more explanatory which doesn't
involve trying to print ex->ee_block.

Addresses-Google-Bug: #2655740

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2010-05-16 23:00:00 -04:00
..
acl.c sanitize xattr handler prototypes 2009-12-16 12:16:49 -05:00
acl.h ext[234]: move over to 'check_acl' permission model 2009-09-08 11:09:04 -07:00
balloc.c ext4: don't use quota reservation for speculative metadata 2010-05-16 11:00:00 -04:00
bitmap.c ext4: Change unsigned long to unsigned int 2008-11-05 00:14:04 -05:00
block_validity.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
dir.c ext4: Use bitops to read/modify i_flags in struct ext4_inode_info 2010-05-16 22:00:00 -04:00
ext4_extents.h ext4: Calculate metadata requirements more accurately 2010-01-01 02:41:30 -05:00
ext4_jbd2.c ext4: Fix BUG_ON at fs/buffer.c:652 in no journal mode 2010-02-16 15:06:29 -05:00
ext4_jbd2.h ext4: Use bitops to read/modify i_flags in struct ext4_inode_info 2010-05-16 22:00:00 -04:00
ext4.h ext4: Use bitops to read/modify i_flags in struct ext4_inode_info 2010-05-16 22:00:00 -04:00
extents.c ext4: Avoid crashing on NULL ptr dereference on a filesystem error 2010-05-16 23:00:00 -04:00
file.c ext4: Use bitops to read/modify i_flags in struct ext4_inode_info 2010-05-16 22:00:00 -04:00
fsync.c ext4: check missed return value in ext4_sync_file() 2010-05-10 00:00:00 -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 ext4: Use bitops to read/modify i_flags in struct ext4_inode_info 2010-05-16 22:00:00 -04:00
inode.c ext4: Use bitops to read/modify i_flags in struct ext4_inode_info 2010-05-16 22:00:00 -04:00
ioctl.c ext4: allow defrag (EXT4_IOC_MOVE_EXT) in 32bit compat mode 2010-05-15 00:00:00 -04:00
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: online defrag -- Add EXT4_IOC_MOVE_EXT ioctl 2009-06-17 19:24:03 -04:00
mballoc.c ext4: Use bitops to read/modify i_flags in struct ext4_inode_info 2010-05-16 22:00:00 -04:00
mballoc.h ext4: consolidate in_range() definitions 2010-03-03 23:55:01 -05:00
migrate.c ext4: Use bitops to read/modify i_flags in struct ext4_inode_info 2010-05-16 22:00:00 -04:00
move_extent.c ext4: Use bitops to read/modify i_flags in struct ext4_inode_info 2010-05-16 22:00:00 -04:00
namei.c ext4: Use bitops to read/modify i_flags in struct ext4_inode_info 2010-05-16 22:00:00 -04:00
resize.c ext4: check s_log_groups_per_flex in online resize code 2010-05-16 01:00:00 -04:00
super.c ext4: Use bitops to read/modify i_flags in struct ext4_inode_info 2010-05-16 22:00:00 -04:00
symlink.c ext4: symlink must be handled via filesystem specific operation 2010-05-16 02:00:00 -04:00
xattr_security.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
xattr_trusted.c sanitize xattr handler prototypes 2009-12-16 12:16:49 -05:00
xattr_user.c sanitize xattr handler prototypes 2009-12-16 12:16:49 -05:00
xattr.c ext4: Use bitops to read/modify i_flags in struct ext4_inode_info 2010-05-16 22:00:00 -04:00
xattr.h ext4: Rename ext4dev to ext4 2008-10-10 20:02:48 -04:00