On 2018/1/4 15:10, Jaegeuk Kim wrote:
> On 01/04, Yunlong Song wrote:
>> In some case, the node blocks has wrong blkaddr whose segment type is
>> NODE, e.g., recover inode has missing xattr flag and the blkaddr is in
>> the xattr range. Since fsck.f2fs does not check the recovery nodes, this
>> will cause __f2fs_replace_block change the curseg of node and do the
>> update_sit_entry(sbi, new_blkaddr, 1) with no next_blkoff refresh, as a
>> result, when recovery process write checkpoint and sync nodes, the
>> next_blkoff of curseg is used in the segment bit map, then it will
>> cause f2fs_bug_on. So let's check segment type in __f2fs_replace_block.
>>
>> Signed-off-by: Yunlong Song <yunlong.song@xxxxxxxxxx>
>> ---
>> fs/f2fs/segment.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
>> index 890d483..50575d5 100644
>> --- a/fs/f2fs/segment.c
>> +++ b/fs/f2fs/segment.c
>> @@ -2720,6 +2720,7 @@ void __f2fs_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
>> type = se->type;
>>
>> down_write(&SM_I(sbi)->curseg_lock);
>> + f2fs_bug_on(sbi, se->valid_blocks && !IS_DATASEG(type));
>
> Let me just move this below like this and start some tests.
>
> ...
>
> + f2fs_bug_on(sbi, !IS_DATASEG(type));
Better,
Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>
Thanks,
> curseg = CURSEG_I(sbi, type);
>
>>
>> if (!recover_curseg) {
>> /* for recovery flow */
>> --
>> 1.8.5.2
>
> .
>
