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f2fs: introduce and spread verify_blkaddr

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This patch introduces verify_blkaddr to check meta/data block address
with valid range to detect bug earlier.

In addition, once we encounter an invalid blkaddr, notice user to run
fsck to fix, and let the kernel panic.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2018-06-05 17:44:11 +08:00
committed by Jaegeuk Kim
parent 24b81dfcb7
commit e1da7872f6
9 changed files with 60 additions and 29 deletions
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8
fs/f2fs/segment.h
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@@ -85,7 +85,7 @@
(GET_SEGOFF_FROM_SEG0(sbi, blk_addr) & ((sbi)->blocks_per_seg - 1))
#define GET_SEGNO(sbi, blk_addr) \
((!is_valid_blkaddr(blk_addr)) ? \
((!is_valid_data_blkaddr(sbi, blk_addr)) ? \
NULL_SEGNO : GET_L2R_SEGNO(FREE_I(sbi), \
GET_SEGNO_FROM_SEG0(sbi, blk_addr)))
#define BLKS_PER_SEC(sbi) \
@@ -647,11 +647,9 @@ static inline void verify_block_addr(struct f2fs_io_info *fio, block_t blk_addr)
if (PAGE_TYPE_OF_BIO(fio->type) == META &&
(!is_read_io(fio->op) || fio->is_meta))
BUG_ON(blk_addr < SEG0_BLKADDR(sbi) ||
blk_addr >= MAIN_BLKADDR(sbi));
verify_blkaddr(sbi, blk_addr, META_GENERIC);
else
BUG_ON(blk_addr < MAIN_BLKADDR(sbi) ||
blk_addr >= MAX_BLKADDR(sbi));
verify_blkaddr(sbi, blk_addr, DATA_GENERIC);
}
/*