Yangtao Li aa4d726af7 f2fs: fix to avoid potential memory corruption in __update_iostat_latency() ... [ Upstream commit 0dbbf0fb38 ] Add iotype sanity check to avoid potential memory corruption. This is to fix the compile error below: fs/f2fs/iostat.c:231 __update_iostat_latency() error: buffer overflow 'io_lat->peak_lat[type]' 3 <= 3 vim +228 fs/f2fs/iostat.c 211 static inline void __update_iostat_latency(struct bio_iostat_ctx *iostat_ctx, 212 enum iostat_lat_type type) 213 { 214 unsigned long ts_diff; 215 unsigned int page_type = iostat_ctx->type; 216 struct f2fs_sb_info *sbi = iostat_ctx->sbi; 217 struct iostat_lat_info *io_lat = sbi->iostat_io_lat; 218 unsigned long flags; 219 220 if (!sbi->iostat_enable) 221 return; 222 223 ts_diff = jiffies - iostat_ctx->submit_ts; 224 if (page_type >= META_FLUSH) ^^^^^^^^^^ 225 page_type = META; 226 227 spin_lock_irqsave(&sbi->iostat_lat_lock, flags); @228 io_lat->sum_lat[type][page_type] += ts_diff; ^^^^^^^^^ Mixup between META_FLUSH and NR_PAGE_TYPE leads to memory corruption. Fixes: a4b6817625 ("f2fs: introduce periodic iostat io latency traces") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <error27@gmail.com> Suggested-by: Chao Yu <chao@kernel.org> Suggested-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Yangtao Li <frank.li@vivo.com> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-03-11 13:57:26 +01:00
..
acl.c	vfs: add rcu argument to ->get_acl() callback	2021-08-18 22:08:24 +02:00
acl.h	vfs: add rcu argument to ->get_acl() callback	2021-08-18 22:08:24 +02:00
checkpoint.c	f2fs: fix to account FS_CP_DATA_IO correctly	2022-10-26 12:35:28 +02:00
compress.c	f2fs: compress: fix to print raw data size in error path of lz4 decompression	2022-04-08 14:23:58 +02:00
data.c	f2fs: fix cgroup writeback accounting with fs-layer encryption	2023-03-10 09:39:58 +01:00
debug.c	f2fs: use spin_lock to avoid hang	2022-04-08 14:23:58 +02:00
dir.c	f2fs: don't use casefolded comparison for "." and ".."	2022-06-09 10:23:17 +02:00
extent_cache.c	f2fs: let's avoid panic if extent_tree is not created	2023-01-24 07:22:42 +01:00
f2fs.h	f2fs: fix to account FS_CP_DATA_IO correctly	2022-10-26 12:35:28 +02:00
file.c	f2fs: allow set compression option of files without blocks	2023-03-11 13:57:23 +01:00
gc.c	f2fs: fix to do sanity check on i_extra_isize in is_alive()	2023-02-09 11:26:47 +01:00
gc.h	f2fs: introduce gc_merge mount option	2021-03-30 18:48:56 -07:00
hash.c	f2fs: don't use casefolded comparison for "." and ".."	2022-06-09 10:23:17 +02:00
inline.c	f2fs: use memcpy_{to,from}_page() where possible	2023-03-11 13:57:23 +01:00
inode.c	f2fs: fix to do sanity check for inline inode	2022-06-09 10:23:18 +02:00
iostat.c	f2fs: fix to avoid potential memory corruption in __update_iostat_latency()	2023-03-11 13:57:26 +01:00
iostat.h	f2fs: introduce periodic iostat io latency traces	2021-08-23 10:25:51 -07:00
Kconfig	f2fs: separate out iostat feature	2021-08-23 10:25:51 -07:00
Makefile	f2fs: separate out iostat feature	2021-08-23 10:25:51 -07:00
namei.c	f2fs: attach inline_data after setting compression	2022-06-29 09:03:27 +02:00
node.c	f2fs: allow to read node block after shutdown	2023-01-12 11:58:47 +01:00
node.h	f2fs: swap: support migrating swapfile in aligned write mode	2021-06-23 01:09:35 -07:00
recovery.c	f2fs: fix to do sanity check on summary info	2022-10-26 12:34:28 +02:00
segment.c	f2fs: fix normal discard process	2022-12-31 13:14:22 +01:00
segment.h	f2fs: fix to do sanity check on total_data_blocks	2022-06-09 10:23:17 +02:00
shrinker.c	f2fs: avoid race condition for shrinker count	2020-12-03 00:59:26 -08:00
super.c	f2fs: use memcpy_{to,from}_page() where possible	2023-03-11 13:57:23 +01:00
sysfs.c	f2fs: fix to enable ATGC correctly via gc_idle sysfs interface	2022-04-08 14:23:10 +02:00
verity.c	fs: f2fs: initialize fsdata in pagecache_write()	2023-03-11 13:57:23 +01:00
xattr.c	f2fs: support fault injection for dquot_initialize()	2022-06-09 10:23:13 +02:00
xattr.h	f2fs: code cleanup by removing ifdef macro surrounding	2020-05-26 18:56:10 -07:00