linux-stable/fs/btrfs
Linus Torvalds 2cf3f8133b btrfs: fix lzo_decompress_bio() kmap leakage
Commit ccaa66c8dd reinstated the kmap/kunmap that had been dropped in
commit 8c945d32e6 ("btrfs: compression: drop kmap/kunmap from lzo").

However, it seems to have done so incorrectly due to the change not
reverting cleanly, and lzo_decompress_bio() ended up not having a
matching "kunmap()" to the "kmap()" that was put back.

Also, any assert that the page pointer is not NULL should be before the
kmap() of said pointer, since otherwise you'd just oops in the kmap()
before the assert would even trigger.

I noticed this when trying to verify my btrfs merge, and things not
adding up.  I'm doing this fixup before re-doing my merge, because this
commit needs to also be backported to 5.15 (after verification from the
btrfs people).

Fixes: ccaa66c8dd ("Revert 'btrfs: compression: drop kmap/kunmap from lzo'")
Cc: David Sterba <dsterba@suse.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-11-01 12:46:47 -07:00
..
tests btrfs: remove ignore_offset argument from btrfs_find_all_roots() 2021-08-23 13:19:01 +02:00
acl.c overlayfs update for 5.15 2021-09-02 09:21:27 -07:00
async-thread.c
async-thread.h
backref.c btrfs: remove ignore_offset argument from btrfs_find_all_roots() 2021-08-23 13:19:01 +02:00
backref.h btrfs: remove ignore_offset argument from btrfs_find_all_roots() 2021-08-23 13:19:01 +02:00
block-group.c btrfs: zoned: suppress reclaim error message on EAGAIN 2021-08-23 13:19:11 +02:00
block-group.h btrfs: rework chunk allocation to avoid exhaustion of the system chunk array 2021-07-07 17:42:41 +02:00
block-rsv.c
block-rsv.h
btrfs_inode.h btrfs: initial fsverity support 2021-08-23 13:19:09 +02:00
check-integrity.c btrfs: check-integrity: drop kmap/kunmap for block pages 2021-08-23 13:19:00 +02:00
check-integrity.h
compression.c for-5.16/block-2021-10-29 2021-11-01 09:19:50 -07:00
compression.h btrfs: rework btrfs_decompress_buf2page() 2021-08-23 13:19:04 +02:00
ctree.c mm: don't include <linux/blk-cgroup.h> in <linux/backing-dev.h> 2021-10-18 06:17:01 -06:00
ctree.h for-5.15-rc5-tag 2021-10-11 16:48:19 -07:00
delalloc-space.c btrfs: fix typos in comments 2021-06-22 14:11:57 +02:00
delalloc-space.h
delayed-inode.c btrfs: add ro compat flags to inodes 2021-08-23 13:19:09 +02:00
delayed-inode.h
delayed-ref.c btrfs: fix lock inversion problem when doing qgroup extent tracing 2021-07-22 15:50:07 +02:00
delayed-ref.h
dev-replace.c btrfs: use bdev_nr_bytes instead of open coding it 2021-10-18 14:43:22 -06:00
dev-replace.h
dir-item.c btrfs: unify lookup return value when dir entry is missing 2021-10-07 22:06:32 +02:00
discard.c btrfs: fix typos in comments 2021-06-22 14:11:57 +02:00
discard.h
disk-io.c btrfs: use bdev_nr_bytes instead of open coding it 2021-10-18 14:43:22 -06:00
disk-io.h
export.c
export.h
extent-io-tree.h
extent-tree.c btrfs: unlock newly allocated extent buffer after error 2021-10-07 22:04:20 +02:00
extent_io.c btrfs: zoned: fix ordered extent boundary calculation 2021-08-23 13:19:16 +02:00
extent_io.h btrfs: fix argument type of btrfs_bio_clone_partial() 2021-08-23 13:19:08 +02:00
extent_map.c
extent_map.h
file-item.c btrfs: replace BUG_ON() in btrfs_csum_one_bio() with proper error handling 2021-09-17 19:29:38 +02:00
file.c btrfs: fix abort logic in btrfs_replace_file_extents 2021-10-07 22:08:06 +02:00
free-space-cache.c btrfs: zoned: fix block group alloc_offset calculation 2021-08-23 13:19:11 +02:00
free-space-cache.h
free-space-tree.c
free-space-tree.h
inode-item.c
inode.c for-5.16/block-2021-10-29 2021-11-01 09:19:50 -07:00
ioctl.c btrfs: use bdev_nr_bytes instead of open coding it 2021-10-18 14:43:22 -06:00
Kconfig btrfs: disable build on platforms having page size 256K 2021-06-22 14:11:57 +02:00
locking.c btrfs: fix typos in comments 2021-06-22 14:11:57 +02:00
locking.h
lzo.c btrfs: fix lzo_decompress_bio() kmap leakage 2021-11-01 12:46:47 -07:00
Makefile btrfs: initial fsverity support 2021-08-23 13:19:09 +02:00
misc.h btrfs: use correct header for div_u64 in misc.h 2021-09-07 14:29:50 +02:00
ordered-data.c btrfs: zoned: fix double counting of split ordered extent 2021-09-07 14:30:41 +02:00
ordered-data.h btrfs: remove uptodate parameter from btrfs_dec_test_first_ordered_pending 2021-08-23 13:19:02 +02:00
orphan.c
print-tree.c
print-tree.h
props.c btrfs: props: change how empty value is interpreted 2021-06-22 14:11:58 +02:00
props.h
qgroup.c btrfs: remove ignore_offset argument from btrfs_find_all_roots() 2021-08-23 13:19:01 +02:00
qgroup.h btrfs: fix lock inversion problem when doing qgroup extent tracing 2021-07-22 15:50:07 +02:00
raid56.c btrfs: constify and cleanup variables in comparators 2021-08-23 13:19:03 +02:00
raid56.h
rcu-string.h
reada.c
ref-verify.c btrfs: stop doing GFP_KERNEL memory allocations in the ref verify tool 2021-08-23 13:19:00 +02:00
ref-verify.h
reflink.c btrfs: reflink: make copy_inline_to_page() to be subpage compatible 2021-06-21 15:19:10 +02:00
reflink.h
relocation.c btrfs: subpage: fix relocation potentially overwriting last page data 2021-08-23 13:19:06 +02:00
root-tree.c
scrub.c btrfs: fix typos in comments 2021-06-22 14:11:57 +02:00
send.c btrfs: allocate backref_ctx on stack in find_extent_clone 2021-08-23 13:19:10 +02:00
send.h
space-info.c btrfs: prevent __btrfs_dump_space_info() to underflow its free space 2021-09-17 19:29:54 +02:00
space-info.h btrfs: rip out btrfs_space_info::total_bytes_pinned 2021-06-22 14:55:25 +02:00
struct-funcs.c btrfs: add special case to setget helpers for 64k pages 2021-08-23 13:18:58 +02:00
subpage.c btrfs: subpage: fix a potential use-after-free in writeback helper 2021-08-23 13:19:05 +02:00
subpage.h btrfs: subpage: fix writeback which does not have ordered extent 2021-08-23 13:19:04 +02:00
super.c btrfs: allow idmapped mount 2021-08-23 13:19:15 +02:00
sysfs.c btrfs: sysfs: document structures and their associated files 2021-08-23 13:19:12 +02:00
sysfs.h
transaction.c btrfs: rework chunk allocation to avoid exhaustion of the system chunk array 2021-07-07 17:42:41 +02:00
transaction.h btrfs: rework chunk allocation to avoid exhaustion of the system chunk array 2021-07-07 17:42:41 +02:00
tree-checker.c btrfs: add ro compat flags to inodes 2021-08-23 13:19:09 +02:00
tree-checker.h
tree-defrag.c
tree-log.c btrfs: check for error when looking up inode during dir entry replay 2021-10-07 22:06:34 +02:00
tree-log.h
tree-mod-log.c btrfs: fix race when picking most recent mod log operation for an old root 2021-04-20 19:27:17 +02:00
tree-mod-log.h
ulist.c
ulist.h
uuid-tree.c
verity.c btrfs: fix transaction handle leak after verity rollback failure 2021-09-17 19:29:41 +02:00
volumes.c for-5.16/inode-sync-2021-10-29 2021-11-01 10:25:27 -07:00
volumes.h btrfs: delay blkdev_put until after the device remove 2021-09-07 14:29:59 +02:00
xattr.c
xattr.h
zlib.c Revert "btrfs: compression: drop kmap/kunmap from zlib" 2021-10-29 13:03:05 +02:00
zoned.c btrfs: use btrfs_next_leaf instead of btrfs_next_item when slots > nritems 2021-08-23 13:19:01 +02:00
zoned.h btrfs: zoned: remove max_zone_append_size logic 2021-08-23 13:18:58 +02:00
zstd.c Revert "btrfs: compression: drop kmap/kunmap from zstd" 2021-10-29 13:02:50 +02:00