Curt Wohlgemuth 6f8ff53726 ext4: handle NULL p_ext in ext4_ext_next_allocated_block() ...

In ext4_ext_next_allocated_block(), the path[depth] might
have a p_ext that is NULL -- see ext4_ext_binsearch().  In
such a case, dereferencing it will crash the machine.

This patch checks for p_ext == NULL in
ext4_ext_next_allocated_block() before dereferencinging it.

Tested using a hand-crafted an inode with eh_entries == 0 in
an extent block, verified that running FIEMAP on it crashes
without this patch, works fine with it.

Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

2011-10-26 04:38:59 -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: rename ext4_has_free_blocks() to ext4_has_free_clusters()

2011-09-09 19:16:51 -04:00

bitmap.c

ext4: Change unsigned long to unsigned int

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

block_validity.c

ext4: move ext4_ind_* functions from inode.c to indirect.c

2011-06-27 19:40:50 -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: 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: Fix ext4_should_writeback_data() for no-journal mode

2011-08-13 11:25:18 -04:00

ext4.h

ext4: update EOFBLOCKS flag on fallocate properly

2011-10-25 08:15:12 -04:00

extents.c

ext4: handle NULL p_ext in ext4_ext_next_allocated_block()

2011-10-26 04:38:59 -04:00

file.c

ext4: prevent stack overrun in ext4_file_open

2011-10-25 09:18:41 -04:00

fsync.c

ext4: functions should not be declared extern

2011-10-18 10:57:51 -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: functions should not be declared extern

2011-10-18 10:57:51 -04:00

indirect.c

ext4: enforce bigalloc restrictions (e.g., no online resizing, etc.)

2011-09-09 18:36:51 -04:00

inode.c

ext4: update EOFBLOCKS flag on fallocate properly

2011-10-25 08:15:12 -04:00

ioctl.c

ext4: add __user decoration to calls of copy_{from,to}_user()

2011-10-18 10:59:51 -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: move ext4_ind_* functions from inode.c to indirect.c

2011-06-27 19:40:50 -04:00

mballoc.c

ext4: Allow quota file use root reservation

2011-10-20 20:07:23 -04:00

mballoc.h

ext4: teach ext4_free_blocks() about bigalloc and clusters

2011-09-09 18:50:51 -04:00

migrate.c

ext4: add some tracepoints in ext4/extents.c

2011-09-09 19:18:51 -04:00

mmp.c

ext4: Fix comparison endianness problem in MMP initialization

2011-10-18 10:53:51 -04:00

move_extent.c

ext4: add some tracepoints in ext4/extents.c

2011-09-09 19:18:51 -04:00

namei.c

ext4: avoid setting directory i_nlink to zero

2011-10-26 03:22:31 -04:00

page-io.c

ext4: remove i_mutex lock in ext4_evict_inode to fix lockdep complaining

2011-08-31 11:50:51 -04:00

resize.c

ext4: Rename ext4_free_blks_{count,set}() to refer to clusters

2011-09-09 19:08:51 -04:00

super.c

ext4: fix ext4 so it works without CONFIG_PROC_FS

2011-10-08 16:26:03 -04:00

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

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: use ext4_reserve_inode_write in ext4_xattr_set_handle

2011-10-26 03:32:07 -04:00

xattr.h

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

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