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kernel_samsung_a53x/fs/ext4
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Jan Kara cb60b25ab6 ext4: avoid writing unitialized memory to disk in EA inodes 
[ Upstream commit 65121eff3e4c8c90f8126debf3c369228691c591 ]

If the extended attribute size is not a multiple of block size, the last
block in the EA inode will have uninitialized tail which will get
written to disk. We will never expose the data to userspace but still
this is not a good practice so just zero out the tail of the block as it
isn't going to cause a noticeable performance overhead.

Fixes: e50e5129f384 ("ext4: xattr-in-inode support")
Reported-by: syzbot+9c1fe13fcb51574b249b@syzkaller.appspotmail.com
Reported-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20240613150234.25176-1-jack@suse.cz
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-23 23:20:10 +01:00
..
acl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
acl.h ext4: apply umask if ACL support is disabled 2024-11-18 11:43:31 +01:00
balloc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
bitmap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
block_validity.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
dir.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ext4.h ext4: Add no_sehash_xattr mount option 2024-11-17 17:43:35 +01:00
ext4_extents.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ext4_jbd2.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ext4_jbd2.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
extents.c ext4: make ext4_es_insert_extent() return void 2024-11-18 23:19:51 +01:00
extents_status.c ext4: fix infinite loop when replaying fast_commit 2024-11-23 23:20:09 +01:00
extents_status.h ext4: make ext4_es_insert_extent() return void 2024-11-18 23:19:51 +01:00
fast_commit.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fast_commit.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
file.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fsmap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fsmap.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
fsync.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
hash.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ialloc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
indirect.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
inline.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
inode-test.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
inode.c ext4: convert to exclusive lock while inserting delalloc extents 2024-11-18 23:19:52 +01:00
ioctl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mballoc.c ext4: fix potential unnitialized variable 2024-11-19 12:26:59 +01:00
mballoc.h ext4: add two helper functions extent_logical_end() and pa_logical_end() 2024-11-18 10:58:45 +01:00
migrate.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
mmp.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
move_extent.c ext4: fix double-free of blocks due to wrong extents moved_len 2024-11-18 12:13:30 +01:00
namei.c ext4: avoid excessive credit estimate in ext4_tmpfile() 2024-11-19 12:26:59 +01:00
page-io.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
readpage.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
resize.c ext4: fix corruption during on-line resize 2024-11-19 09:22:34 +01:00
super.c ext4: fix error code saved on super block during file system abort 2024-11-19 14:19:51 +01:00
symlink.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
sysfs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
truncate.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
verity.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xattr.c ext4: avoid writing unitialized memory to disk in EA inodes 2024-11-23 23:20:10 +01:00
xattr.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xattr_hurd.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xattr_security.c ext4: Add no_sehash_xattr mount option 2024-11-17 17:43:35 +01:00
xattr_trusted.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xattr_user.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00