On sudden f2fs shutdown, write pointers of zoned block devices can go
further but f2fs meta data keeps current segments at positions before the
write operations. After remounting the f2fs, this inconsistency causes
write operations not at write pointers and "Unaligned write command"
error is report
To prepare for write pointer consistency check by fsck, add
f2fs_report_zone() helper function which calls REPORT ZONE command to
get write pointer status of a single zone. The function is added to
lib/libf2fs_zoned which gathers zoned block device related functions.
Signed-off-by: Shin'ichiro Kaw
In f2fs_listxattr, there is no boundary check before
memcpy e_name to buffer.
If the e_name_len is corrupted,
unexpected memory contents may be returned to the buffer.
Signed-off-by: Randall Huang
---
v2:
relocate sanity check
---
fs/f2fs/xattr.c | 14 +-
1 file changed, 13 insertion
On Oct 02, 2019 / 14:30, Shin'ichiro Kawasaki wrote:
> Now I'm preparing patches for fsck as well as kernel based on the valuable
> and detailed e-mail discussion between you and me. Here I summarize my
I have posted the two patch series to add write pointer consistency check,
based on the discuss
On sudden f2fs shutdown, zoned block device status and f2fs meta data can be
inconsistent. When f2fs shutdown happens during write operations, write pointers
on the device go forward but the f2fs meta data does not reflect the write
pointer progress. This inconsistency will eventually cause "Unalig
To catch f2fs bugs in write pointer handling code for zoned block
devices, check write pointers of non-open zones that current segments do
not point to. Do this check at mount time, after the fsync data recovery
and current segments' write pointer consistency fix. Check two items
comparing write po
On sudden f2fs shutdown, write pointers of zoned block devices can go
further but f2fs meta data keeps current segments at positions before the
write operations. After remounting the f2fs, this inconsistency causes
write operations not at write pointers and "Unaligned write command"
error is report
