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linux/fs/ext4
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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