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8d5a803c6a
linux/fs/ext4
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Theodore Ts'o 8d5a803c6a ext4: check for allocation block validity with block group locked 
With commit 044e6e3d74: "ext4: don't update checksum of new
initialized bitmaps" the buffer valid bit will get set without
actually setting up the checksum for the allocation bitmap, since the
checksum will get calculated once we actually allocate an inode or
block.

If we are doing this, then we need to (re-)check the verified bit
after we take the block group lock.  Otherwise, we could race with
another process reading and verifying the bitmap, which would then
complain about the checksum being invalid.

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1780137

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
2018-07-12 19:08:05 -04:00
..
acl.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
acl.h ext4: fix up remaining files with SPDX cleanups 2017-12-17 22:00:59 -05:00
balloc.c ext4: check for allocation block validity with block group locked 2018-07-12 19:08:05 -04:00
bitmap.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
block_validity.c ext4: use 'sbi' instead of 'EXT4_SB(sb)' 2018-01-11 13:17:49 -05:00
dir.c ext4: force revalidation of directory pointer after seekdir(2) 2018-04-01 23:21:03 -04:00
ext4_extents.h ext4: verify the depth of extent tree in ext4_find_extent() 2018-06-14 12:55:10 -04:00
ext4_jbd2.c ext4: shutdown should not prevent get_write_access 2018-02-18 22:07:36 -05:00
ext4_jbd2.h ext4: fix up remaining files with SPDX cleanups 2017-12-17 22:00:59 -05:00
ext4.h Bug fixes for ext4; most of which relate to vulnerabilities where a 2018-07-08 11:10:30 -07:00
extents_status.c ext4: remove NULL check before calling kmem_cache_destroy() 2018-05-20 22:44:13 -04:00
extents_status.h ext4: fix up remaining files with SPDX cleanups 2017-12-17 22:00:59 -05:00
extents.c Bug fixes for ext4; most of which relate to vulnerabilities where a 2018-07-08 11:10:30 -07:00
file.c ext4: do not update s_last_mounted of a frozen fs 2018-05-13 22:54:44 -04:00
fsmap.c ext4: make function ‘ext4_getfsmap_find_fixed_metadata’ static 2018-05-10 11:50:04 -04:00
fsmap.h ext4: fix up remaining files with SPDX cleanups 2017-12-17 22:00:59 -05:00
fsync.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hash.c ext4: fix up remaining files with SPDX cleanups 2017-12-17 22:00:59 -05:00
ialloc.c ext4: check for allocation block validity with block group locked 2018-07-12 19:08:05 -04:00
indirect.c ext4: fix hole length detection in ext4_ind_map_blocks() 2018-05-12 19:55:00 -04:00
inline.c ext4: fix inline data updates with checksums enabled 2018-07-10 01:07:43 -04:00
inode.c ext4: fix inline data updates with checksums enabled 2018-07-10 01:07:43 -04:00
ioctl.c ext4: remove EXT4_STATE_DIOREAD_LOCK flag 2018-03-22 11:52:10 -04:00
Kconfig fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at 2018-01-01 12:45:37 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mballoc.c Bug fixes for ext4; most of which relate to vulnerabilities where a 2018-07-08 11:10:30 -07:00
mballoc.h ext4: fix up remaining files with SPDX cleanups 2017-12-17 22:00:59 -05:00
migrate.c ext4: fix up remaining files with SPDX cleanups 2017-12-17 22:00:59 -05:00
mmp.c ext4: clear mmp sequence number when remounting read-only 2018-07-08 19:36:02 -04:00
move_extent.c ext4: remove EXT4_STATE_DIOREAD_LOCK flag 2018-03-22 11:52:10 -04:00
namei.c Merge branch 'vfs_timespec64' of https://github.com/deepa-hub/vfs into vfs-timespec64 2018-06-14 14:54:00 +02:00
page-io.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
readpage.c fscrypt: allow synchronous bio decryption 2018-05-02 14:30:57 -07:00
resize.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
super.c ext4: clear mmp sequence number when remounting read-only 2018-07-08 19:36:02 -04:00
symlink.c ext4: switch to fscrypt_get_symlink() 2018-01-11 22:10:40 -05:00
sysfs.c ext4: simplify procfs code 2018-05-16 07:24:30 +02:00
truncate.h ext4: fix up remaining files with SPDX cleanups 2017-12-17 22:00:59 -05:00
xattr_security.c ext4: use XATTR_CREATE in ext4_initxattrs() 2018-05-10 11:52:14 -04:00
xattr_trusted.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xattr_user.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xattr.c ext4: avoid running out of journal credits when appending to an inline file 2018-06-16 23:41:59 -04:00
xattr.h ext4: add extra checks to ext4_xattr_block_get() 2018-03-30 20:04:11 -04:00