Vegard Nossum 3a22cf0c7b ext4: fix reference counting bug on block allocation error ... commit 554a5ccc4e4a20c5f3ec859de0842db4b4b9c77e upstream. If we hit this error when mounted with errors=continue or errors=remount-ro: EXT4-fs error (device loop0): ext4_mb_mark_diskspace_used:2940: comm ext4.exe: Allocating blocks 5090-6081 which overlap fs metadata then ext4_mb_new_blocks() will call ext4_mb_release_context() and try to continue. However, ext4_mb_release_context() is the wrong thing to call here since we are still actually using the allocation context. Instead, just error out. We could retry the allocation, but there is a possibility of getting stuck in an infinite loop instead, so this seems safer. [ Fixed up so we don't return EAGAIN to userspace. --tytso ] Fixes: 8556e8f3b6 ("ext4: Don't allow new groups to be added during block allocation") Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2016-08-16 09:30:51 +02:00
..
acl.c	ext4: remove unused header files	2015-04-02 23:47:42 -04:00
acl.h	ext2/3/4: use generic posix ACL infrastructure	2014-01-25 23:58:19 -05:00
balloc.c	ext4: validate s_reserved_gdt_blocks on mount	2016-08-16 09:30:51 +02:00
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
crypto.c	ext4: fix an endianness bug in ext4_encrypted_zeroout()	2015-11-26 15:20:19 -05:00
crypto_fname.c	ext4 crypto: replace some BUG_ON()'s with error checks	2015-10-03 10:49:27 -04:00
crypto_key.c	ext4 crypto: add missing locking for keyring_key access	2016-02-17 12:31:02 -08:00
crypto_policy.c	ext4 crypto: replace some BUG_ON()'s with error checks	2015-10-03 10:49:27 -04:00
dir.c	ext4: clean up feature test macros with predicate functions	2015-10-17 16:18:43 -04:00
ext4.h	ext4: fix races of writeback with punch hole and zero range	2016-05-04 14:48:53 -07:00
ext4_crypto.h	ext4 crypto: allocate bounce pages using GFP_NOWAIT	2015-06-03 09:32:39 -04:00
ext4_extents.h	ext4: teach ext4_ext_find_extent() to realloc path if necessary	2014-09-01 14:40:09 -04:00
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: clean up feature test macros with predicate functions	2015-10-17 16:18:43 -04:00
extents.c	ext4: check for extents that wrap around	2016-08-16 09:30:51 +02:00
extents_status.c	ext4: move procfs registration code to fs/ext4/sysfs.c	2015-09-23 12:46:17 -04:00
extents_status.h	ext4: move procfs registration code to fs/ext4/sysfs.c	2015-09-23 12:46:17 -04:00
file.c	ext4: fix races between page faults and hole punching	2016-05-04 14:48:53 -07:00
fsync.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
hash.c	ext4: remove unused header files	2015-04-02 23:47:42 -04:00
ialloc.c	ext4: clean up error handling when orphan list is corrupted	2016-06-07 18:14:37 -07:00
indirect.c	ext4: clean up feature test macros with predicate functions	2015-10-17 16:18:43 -04:00
inline.c	ext4: clean up feature test macros with predicate functions	2015-10-17 16:18:43 -04:00
inode.c	ext4: don't call ext4_should_journal_data() on the journal inode	2016-08-16 09:30:51 +02:00
ioctl.c	ext4: clean up feature test macros with predicate functions	2015-10-17 16:18:43 -04:00
Kconfig	ext4: Update EXT4_USE_FOR_EXT2 description	2015-09-24 13:27:47 +02:00
Makefile	ext4: move sysfs code from super.c to fs/ext4/sysfs.c	2015-09-23 12:44:17 -04:00
mballoc.c	ext4: fix reference counting bug on block allocation error	2016-08-16 09:30:51 +02:00
mballoc.h	ext4: remove unused ac_ex_scanned	2014-02-20 13:32:10 -05:00
migrate.c	ext4: clean up feature test macros with predicate functions	2015-10-17 16:18:43 -04:00
mmp.c	ext4: call out CRC and corruption errors with specific error codes	2015-10-17 16:16:04 -04:00
move_extent.c	ext4: iterate over buffer heads correctly in move_extent_per_page()	2016-06-01 12:15:48 -07:00
namei.c	ext4: fix oops on corrupted filesystem	2016-06-07 18:14:37 -07:00
page-io.c	ext4 crypto: fix memory leak in ext4_bio_write_page()	2015-10-02 23:54:58 -04:00
readpage.c	Merge branch 'akpm' (patches from Andrew)	2015-11-07 14:32:45 -08:00
resize.c	ext4: fix potential integer overflow	2016-02-25 12:01:15 -08:00
super.c	ext4: short-cut orphan cleanup on error	2016-08-16 09:30:51 +02:00
symlink.c	ext4: fix an endianness bug in ext4_encrypted_follow_link()	2015-11-26 15:20:50 -05:00
sysfs.c	ext4: add "static" to ext4_seq_##name##_fops struct	2015-11-26 15:52:24 -05:00
truncate.h	ext4: fix races between page faults and hole punching	2016-05-04 14:48:53 -07:00
xattr.c	xattr handlers: Pass handler to operations instead of flags	2015-11-13 20:34:32 -05:00
xattr.h	ext4 crypto: add encryption xattr support	2015-04-11 07:47:00 -04:00
xattr_security.c	xattr handlers: Pass handler to operations instead of flags	2015-11-13 20:34:32 -05:00
xattr_trusted.c	xattr handlers: Pass handler to operations instead of flags	2015-11-13 20:34:32 -05:00
xattr_user.c	xattr handlers: Pass handler to operations instead of flags	2015-11-13 20:34:32 -05:00