Fabian Frederick edf15aa180 ext4: fix memory leak in ext4_insert_range() ...

Running xfstests generic/013 with kmemleak gives the following:

unreferenced object 0xffff8801d3d27de0 (size 96):
  comm "fsstress", pid 4941, jiffies 4294860168 (age 53.485s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 01 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<ffffffff818eaaf3>] kmemleak_alloc+0x23/0x40
    [<ffffffff81179805>] __kmalloc+0xf5/0x1d0
    [<ffffffff8122ef5c>] ext4_find_extent+0x1ec/0x2f0
    [<ffffffff8123530c>] ext4_insert_range+0x34c/0x4a0
    [<ffffffff81235942>] ext4_fallocate+0x4e2/0x8b0
    [<ffffffff81181334>] vfs_fallocate+0x134/0x210
    [<ffffffff8118203f>] SyS_fallocate+0x3f/0x60
    [<ffffffff818efa9b>] entry_SYSCALL_64_fastpath+0x13/0x8f
    [<ffffffffffffffff>] 0xffffffffffffffff

Problem seems mitigated by dropping refs and freeing path
when there's no path[depth].p_ext

Cc: stable@vger.kernel.org
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

2016-09-15 11:39:52 -04:00

..

acl.c

posix_acl: Inode acl caching fixes

2016-03-31 00:30:15 -04:00

acl.h

ext2/3/4: use generic posix ACL infrastructure

2014-01-25 23:58:19 -05:00

balloc.c

The major change this cycle is deleting ext4's copy of the file system

2016-07-26 18:35:55 -07:00

bitmap.c

ext4: remove unused header files

2015-04-02 23:47:42 -04:00

block_validity.c

ext4: call out CRC and corruption errors with specific error codes

2015-10-17 16:16:04 -04:00

dir.c

ext4 crypto: migrate into vfs's crypto engine

2016-07-10 14:01:03 -04:00

ext4_extents.h

ext4: fix misspellings in comments.

2016-03-09 23:49:05 -05:00

ext4_jbd2.c

ext4: fix potential use after free in __ext4_journal_stop

2015-10-17 22:57:06 -04:00

ext4_jbd2.h

ext4: optimize ext4_should_retry_alloc() to improve ENOSPC performance

2016-06-26 18:24:01 -04:00

ext4.h

ext4: remove old feature helpers

2016-09-05 23:11:58 -04:00

extents_status.c

ext4: remove trailing \n from ext4_warning/ext4_error calls

2016-04-27 01:11:21 -04:00

extents_status.h

ext4: move procfs registration code to fs/ext4/sysfs.c

2015-09-23 12:46:17 -04:00

extents.c

ext4: fix memory leak in ext4_insert_range()

2016-09-15 11:39:52 -04:00

file.c

Merge branch 'akpm' (patches from Andrew)

2016-07-26 19:55:54 -07:00

fsync.c

ext4: cleanup ext4_sync_parent()

2016-09-05 23:21:43 -04:00

hash.c

ext4: remove unused header files

2015-04-02 23:47:42 -04:00

ialloc.c

ext4: remove old feature helpers

2016-09-05 23:11:58 -04:00

indirect.c

ext4: refactor direct IO code

2016-05-13 00:44:16 -04:00

inline.c

ext4 crypto: migrate into vfs's crypto engine

2016-07-10 14:01:03 -04:00

inode.c

ext4: bugfix for mmaped pages in mpage_release_unused_pages()

2016-09-15 11:32:46 -04:00

ioctl.c

ext4: remove old feature helpers

2016-09-05 23:11:58 -04:00

Kconfig

ext4 crypto: migrate into vfs's crypto engine

2016-07-10 14:01:03 -04:00

Makefile

ext4 crypto: migrate into vfs's crypto engine

2016-07-10 14:01:03 -04:00

mballoc.c

Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2016-07-28 12:59:05 -07:00

mballoc.h

ext4: fix compile error while opening the macro DOUBLE_CHECK

2016-03-13 17:18:12 -04:00

migrate.c

ext4: fix misspellings in comments.

2016-03-09 23:49:05 -05:00

mmp.c

fs: have submit_bh users pass in op and flags separately

2016-06-07 13:41:38 -06:00

move_extent.c

ext4: enforce online defrag restriction for encrypted files

2016-08-29 15:45:11 -04:00

namei.c

The major change this cycle is deleting ext4's copy of the file system

2016-07-26 18:35:55 -07:00

page-io.c

The major change this cycle is deleting ext4's copy of the file system

2016-07-26 18:35:55 -07:00

readpage.c

Merge branch 'akpm' (patches from Andrew)

2016-07-26 19:55:54 -07:00

resize.c

ext4: remove trailing \n from ext4_warning/ext4_error calls

2016-04-27 01:11:21 -04:00

super.c

ext4: improve ext4lazyinit scalability

2016-09-05 23:38:36 -04:00

symlink.c

ext4 crypto: migrate into vfs's crypto engine

2016-07-10 14:01:03 -04:00

sysfs.c

drop redundant ->owner initializations

2016-05-29 19:08:00 -04:00

truncate.h

ext4: fix races between page faults and hole punching

2015-12-07 14:28:03 -05:00

xattr_security.c

switch xattr_handler->set() to passing dentry and inode separately

2016-05-27 15:39:43 -04:00

xattr_trusted.c

switch xattr_handler->set() to passing dentry and inode separately

2016-05-27 15:39:43 -04:00

xattr_user.c

switch xattr_handler->set() to passing dentry and inode separately

2016-05-27 15:39:43 -04:00

xattr.c

ext4: factor out loop for freeing inode xattr space

2016-08-29 15:44:11 -04:00

xattr.h

ext4: reserve xattr index for the Hurd

2016-07-31 23:38:36 -04:00