diff options
| author | Jin Qian <jinqian@android.com> | 2017-06-01 11:18:30 -0700 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-07-13 16:56:30 -0700 |
| commit | 1479b6ffeb2eba6575600fb941f73f47d74a91a0 (patch) | |
| tree | 4fd169b9db5fc6d8d10f55b12680b0d126c02613 | |
| parent | 83f42def8ae0598dfa66c3419c9df4078df60a48 (diff) | |
f2fs: sanity check size of nat and sit cache
Make sure number of entires doesn't exceed max journal size.
Cc: stable@vger.kernel.org
Signed-off-by: Jin Qian <jinqian@android.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
| -rw-r--r-- | fs/f2fs/segment.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 3e2121dcaded..f86fd003f932 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -2574,6 +2574,8 @@ static int read_normal_summaries(struct f2fs_sb_info *sbi, int type) static int restore_curseg_summaries(struct f2fs_sb_info *sbi) { + struct f2fs_journal *sit_j = CURSEG_I(sbi, CURSEG_COLD_DATA)->journal; + struct f2fs_journal *nat_j = CURSEG_I(sbi, CURSEG_HOT_DATA)->journal; int type = CURSEG_HOT_DATA; int err; @@ -2600,6 +2602,11 @@ static int restore_curseg_summaries(struct f2fs_sb_info *sbi) return err; } + /* sanity check for summary blocks */ + if (nats_in_cursum(nat_j) > NAT_JOURNAL_ENTRIES || + sits_in_cursum(sit_j) > SIT_JOURNAL_ENTRIES) + return -EINVAL; + return 0; } |