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Chao Yu 95978caa13 f2fs: fix to avoid use-after-free in f2fs_write_multi_pages() 
In compress cluster, if physical block number is less than logic
page number, race condition will cause use-after-free issue as
described below:

- f2fs_write_compressed_pages
 - fio.page = cic->rpages[0];
 - f2fs_outplace_write_data
					- f2fs_compress_write_end_io
					 - kfree(cic->rpages);
					 - kfree(cic);
 - fio.page = cic->rpages[1];

f2fs_write_multi_pages+0xfd0/0x1a98
f2fs_write_data_pages+0x74c/0xb5c
do_writepages+0x64/0x108
__writeback_single_inode+0xdc/0x4b8
writeback_sb_inodes+0x4d0/0xa68
__writeback_inodes_wb+0x88/0x178
wb_writeback+0x1f0/0x424
wb_workfn+0x2f4/0x574
process_one_work+0x210/0x48c
worker_thread+0x2e8/0x44c
kthread+0x110/0x120
ret_from_fork+0x10/0x18

Fixes: 4c8ff7095bef ("f2fs: support data compression")
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2020-03-10 09:18:33 -07:00
..
acl.c
f2fs: Replace spaces with tab
2019-05-08 21:23:11 -07:00
acl.h
f2fs: add SPDX license identifiers
2018-09-12 13:07:10 -07:00
checkpoint.c
f2fs: fix inconsistent comments
2020-03-10 09:18:33 -07:00
compress.c
f2fs: fix to avoid use-after-free in f2fs_write_multi_pages()
2020-03-10 09:18:33 -07:00
data.c
f2fs: fix inconsistent comments
2020-03-10 09:18:33 -07:00
debug.c
f2fs: Add f2fs stats to sysfs
2020-01-23 09:24:25 -08:00
dir.c
f2fs-for-5.6
2020-01-30 15:39:24 -08:00
extent_cache.c
f2fs: introduce f2fs_<level> macros to wrap f2fs_printk()
2019-07-02 15:40:40 -07:00
f2fs.h
f2fs: fix inconsistent comments
2020-03-10 09:18:33 -07:00
file.c
f2fs: fix to avoid using uninitialized variable
2020-03-10 09:18:33 -07:00
gc.c
f2fs: fix inconsistent comments
2020-03-10 09:18:33 -07:00
gc.h
f2fs: add SPDX license identifiers
2018-09-12 13:07:10 -07:00
hash.c
f2fs: Support case-insensitive file name lookups
2019-08-23 07:57:13 -07:00
inline.c
f2fs: convert inline_dir early before starting rename
2020-01-17 16:48:42 -08:00
inode.c
f2fs: fix inconsistent comments
2020-03-10 09:18:33 -07:00
Kconfig
f2fs-for-5.6
2020-01-30 15:39:24 -08:00
Makefile
f2fs: support data compression
2020-01-17 16:48:07 -08:00
namei.c
f2fs: fix inconsistent comments
2020-03-10 09:18:33 -07:00
node.c
f2fs: fix inconsistent comments
2020-03-10 09:18:33 -07:00
node.h
f2fs: check PageWriteback flag for ordered case
2018-12-26 15:16:56 -08:00
recovery.c
f2fs: Check write pointer consistency of open zones
2020-01-15 13:42:14 -08:00
segment.c
f2fs: change to use rwsem for gc_mutex
2020-01-17 16:48:44 -08:00
segment.h
f2fs: update f2fs document regarding to fsync_mode
2020-01-17 16:48:44 -08:00
shrinker.c
f2fs: fix inconsistent comments
2020-03-10 09:18:33 -07:00
super.c
f2fs: fix inconsistent comments
2020-03-10 09:18:33 -07:00
sysfs.c
f2fs: Add f2fs stats to sysfs
2020-01-23 09:24:25 -08:00
trace.c
f2fs: do not use mutex lock in atomic context
2019-03-05 19:58:06 -08:00
trace.h
f2fs: add SPDX license identifiers
2018-09-12 13:07:10 -07:00
verity.c
fs-verity: implement readahead of Merkle tree pages
2020-01-14 13:27:32 -08:00
xattr.c
f2fs: remove i_sem lock coverage in f2fs_setxattr()
2020-03-10 09:18:32 -07:00
xattr.h
f2fs: add fs-verity support
2019-08-12 19:33:51 -07:00