Suraj Jitindar Singh 7c990728b9 ext4: fix potential race between s_flex_groups online resizing and access ... During an online resize an array of s_flex_groups structures gets replaced so it can get enlarged. If there is a concurrent access to the array and this memory has been reused then this can lead to an invalid memory access. The s_flex_group array has been converted into an array of pointers rather than an array of structures. This is to ensure that the information contained in the structures cannot get out of sync during a resize due to an accessor updating the value in the old structure after it has been copied but before the array pointer is updated. Since the structures them- selves are no longer copied but only the pointers to them this case is mitigated. Link: https://bugzilla.kernel.org/show_bug.cgi?id=206443 Link: https://lore.kernel.org/r/20200221053458.730016-4-tytso@mit.edu Signed-off-by: Suraj Jitindar Singh <surajjs@amazon.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Cc: stable@kernel.org		2020-02-21 19:31:46 -05:00
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acl.c	ext4: compare old and new mode before setting update_mode flag	2018-12-10 00:22:38 -05:00
acl.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
balloc.c	ext4: fix potential race between online resizing and write operations	2020-02-21 00:37:09 -05:00
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: add cond_resched() to ext4_protect_reserved_inode	2020-02-13 11:56:26 -05:00
dir.c	ext4: fix checksum errors with indexed dirs	2020-02-13 11:56:19 -05:00
ext4.h	ext4: fix potential race between s_flex_groups online resizing and access	2020-02-21 19:31:46 -05:00
ext4_extents.h	ext4: make some functions static in extents.c	2020-01-17 16:24:54 -05:00
ext4_jbd2.c	ext4: uninline ext4_inode_journal_mode()	2020-01-17 16:24:52 -05:00
ext4_jbd2.h	ext4: uninline ext4_inode_journal_mode()	2020-01-17 16:24:52 -05:00
extents.c	ext4: fix extent_status fragmentation for plain files	2020-01-23 12:02:15 -05:00
extents_status.c	ext4: use percpu_counters for extent_status cache hits/misses	2019-08-28 11:19:23 -04:00
extents_status.h	ext4: fix extent_status trace points	2020-01-25 02:03:03 -05:00
file.c	ext4: Optimize ext4 DIO overwrites	2019-12-26 11:57:18 -05:00
fsmap.c	ext4: fix miscellaneous sparse warnings	2019-05-12 04:49:47 -04:00
fsmap.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
fsync.c	ext4: update ext4_sync_file() to not use __generic_file_fsync()	2019-11-05 11:31:40 -05:00
hash.c	ext4: fix kernel oops caused by spurious casefold flag	2019-09-03 01:43:17 -04:00
ialloc.c	ext4: fix potential race between s_flex_groups online resizing and access	2020-02-21 19:31:46 -05:00
indirect.c	ext4: remove ext4_{ind,ext}_calc_metadata_amount()	2020-01-17 16:24:54 -05:00
inline.c	ext4,jbd2: fix comment and code style	2020-01-25 02:24:53 -05:00
inode-test.c	kunit: allow kunit tests to be loaded as a module	2020-01-09 16:42:29 -07:00
inode.c	ext4: fix a data race in EXT4_I(inode)->i_disksize	2020-02-19 23:17:02 -05:00
ioctl.c	ext4: Add EXT4_IOC_FSGETXATTR/EXT4_IOC_FSSETXATTR to compat_ioctl	2020-01-17 16:24:55 -05:00
Kconfig	This merge window, we've added some performance improvements in how we	2020-01-30 15:17:05 -08:00
Makefile	kunit: allow kunit tests to be loaded as a module	2020-01-09 16:42:29 -07:00
mballoc.c	ext4: fix potential race between s_flex_groups online resizing and access	2020-02-21 19:31:46 -05:00
mballoc.h	ext4: fix up remaining files with SPDX cleanups	2017-12-17 22:00:59 -05:00
migrate.c	ext4: Reserve revoke credits for freed blocks	2019-11-05 16:00:49 -05:00
mmp.c	ext4: don't assume that mmp_nodename/bdevname have NUL	2020-02-13 11:53:10 -05:00
move_extent.c	ext4: use jbd2_inode dirty range scoping	2019-06-20 17:26:26 -04:00
namei.c	ext4: add cond_resched() to __ext4_find_entry()	2020-02-19 23:53:52 -05:00
page-io.c	ext4: fix deadlock allocating crypto bounce page from mempool	2020-01-17 16:24:54 -05:00
readpage.c	ext4: remove unneeded check for error allocating bio_post_read_ctx	2020-01-17 16:24:54 -05:00
resize.c	ext4: fix potential race between s_flex_groups online resizing and access	2020-02-21 19:31:46 -05:00
super.c	ext4: fix potential race between s_flex_groups online resizing and access	2020-02-21 19:31:46 -05:00
symlink.c	ext4: switch to fscrypt_get_symlink()	2018-01-11 22:10:40 -05:00
sysfs.c	ext4: export information about first/last errors via /sys/fs/ext4/<dev>	2019-12-26 11:29:10 -05:00
truncate.h	ext4: handle layout changes to pinned DAX mappings	2018-07-29 17:00:22 -04:00
verity.c	fs-verity: implement readahead of Merkle tree pages	2020-01-14 13:27:32 -08:00
xattr.c	ext4: drop ext4_kvmalloc()	2020-01-17 16:24:55 -05:00
xattr.h	ext4: add extra checks to ext4_xattr_block_get()	2018-03-30 20:04:11 -04:00
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