diff options
| author | Jin Qian <jinqian@google.com> | 2017-04-25 16:28:48 -0700 |
|---|---|---|
| committer | Sasha Levin <alexander.levin@verizon.com> | 2017-06-13 09:29:21 -0400 |
| commit | 46527f8d11fa64d3b493d03fc5c3b5ecc7d4d37a (patch) | |
| tree | a08acff78f182c75df1cba54f5b606c54f57dabe /fs | |
| parent | 2b674f4ecce8f0e8181c3daef3339ce836ebce72 (diff) | |
f2fs: sanity check segment count
[ Upstream commit b9dd46188edc2f0d1f37328637860bb65a771124 ]
F2FS uses 4 bytes to represent block address. As a result, supported
size of disk is 16 TB and it equals to 16 * 1024 * 1024 / 2 segments.
Signed-off-by: Jin Qian <jinqian@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/super.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 37f61388a64d..660183e9ab7c 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -960,6 +960,13 @@ static int sanity_check_raw_super(struct super_block *sb, return 1; } + if (le32_to_cpu(raw_super->segment_count) > F2FS_MAX_SEGMENT) { + f2fs_msg(sb, KERN_INFO, + "Invalid segment count (%u)", + le32_to_cpu(raw_super->segment_count)); + return 1; + } + /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ if (sanity_check_area_boundary(sb, raw_super)) return 1; |