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v5.9.7
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yangerkun cef20b45c9 ext4: do not use extent after put_bh 
commit d7dce9e085 upstream.

ext4_ext_search_right() will read more extent blocks and call put_bh
after we get the information we need.  However, ret_ex will break this
and may cause use-after-free once pagecache has been freed.  Fix it by
copying the extent structure if needed.

Signed-off-by: yangerkun <yangerkun@huawei.com>
Link: https://lore.kernel.org/r/20201028055617.2569255-1-yangerkun@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-11-05 11:51:52 +01:00
..
acl.c
ext4: handle ext4_mark_inode_dirty errors
2020-06-03 23:16:50 -04:00
acl.h
…
balloc.c
ext4: clear buffer verified flag if read meta block from disk
2020-11-05 11:51:52 +01:00
bitmap.c
…
block_validity.c
ext4: correctly restore system zone info when remount fails
2020-08-07 14:12:37 -04:00
dir.c
ext4: avoid utf8_strncasecmp() with unstable name
2020-06-11 11:01:33 -04:00
ext4_extents.h
ext4: fix EXT_MAX_EXTENT/INDEX to check for zeroed eh_max
2020-06-03 23:16:49 -04:00
ext4_jbd2.c
ext4: abort the filesystem if failed to async write metadata buffer
2020-08-07 14:12:34 -04:00
ext4_jbd2.h
ext4: drop ext4_journal_free_reserved()
2020-06-03 23:16:53 -04:00
ext4.h
ext4: disallow modifying DAX inode flag if inline_data has been set
2020-10-29 10:11:56 +01:00
extents_status.c
ext4: remove unnecessary comparisons to bool
2020-06-03 23:16:49 -04:00
extents_status.h
ext4: fix extent_status trace points
2020-01-25 02:03:03 -05:00
extents.c
ext4: do not use extent after put_bh
2020-11-05 11:51:52 +01:00
file.c
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2020-08-21 11:03:38 -07:00
fsmap.c
ext4: limit entries returned when counting fsmap records
2020-10-29 10:11:57 +01:00
fsmap.h
…
fsync.c
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2020-06-05 16:19:28 -07:00
hash.c
ext4: change to use fallthrough macro
2020-08-18 14:27:40 -04:00
ialloc.c
ext4: clear buffer verified flag if read meta block from disk
2020-11-05 11:51:52 +01:00
indirect.c
ext4: limit the length of per-inode prealloc list
2020-08-19 12:04:36 -04:00
inline.c
ext4: Fix comment typo "the the".
2020-08-19 12:04:35 -04:00
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 bs < ps issue reported with dioread_nolock mount opt
2020-11-05 11:51:52 +01:00
ioctl.c
ext4: limit the length of per-inode prealloc list
2020-08-19 12:04:36 -04:00
Kconfig
ext4: replace HTTP links with HTTPS ones
2020-08-06 01:01:57 -04:00
Makefile
ext4: support xattr gnu.* namespace for the Hurd
2020-06-12 13:23:34 -04:00
mballoc.c
ext4: discard preallocations before releasing group lock
2020-10-29 10:11:56 +01:00
mballoc.h
ext4: limit the length of per-inode prealloc list
2020-08-19 12:04:36 -04:00
migrate.c
ext4: handle ext4_mark_inode_dirty errors
2020-06-03 23:16:50 -04:00
mmp.c
ext4: save all error info in save_error_info() and drop ext4_set_errno()
2020-04-01 17:29:06 -04:00
move_extent.c
ext4: limit the length of per-inode prealloc list
2020-08-19 12:04:36 -04:00
namei.c
ext4: remove unused parameter of ext4_generic_delete_entry function
2020-08-18 14:25:54 -04:00
page-io.c
ext4: add inline encryption support
2020-07-08 10:29:43 -07:00
readpage.c
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2020-08-21 11:03:38 -07:00
resize.c
ext4: fix error handling code in add_new_gdb
2020-11-05 11:51:51 +01:00
super.c
ext4: fix bdev write error check failed when mount fs with ro
2020-11-05 11:51:52 +01:00
symlink.c
…
sysfs.c
ext4: limit the length of per-inode prealloc list
2020-08-19 12:04:36 -04:00
truncate.h
…
verity.c
Merge tag 'ext4-for-linus-5.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2020-06-15 09:32:10 -07:00
xattr_hurd.c
ext4: support xattr gnu.* namespace for the Hurd
2020-06-12 13:23:34 -04:00
xattr_security.c
…
xattr_trusted.c
…
xattr_user.c
…
xattr.c
ext4: delete unnecessary checks before brelse()
2020-08-06 00:08:56 -04:00
xattr.h
ext4: support xattr gnu.* namespace for the Hurd
2020-06-12 13:23:34 -04:00