diff options
| author | piaojun <[email protected]> | 2018-04-05 16:19:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2018-04-05 21:36:22 -0700 |
| commit | ba16ddfbeb9dde0df67cdb2006820e9cf4d99386 (patch) | |
| tree | 4923d608fcb9fd3de8390345c9b42f686064287b | |
| parent | 39ec3774e3e8ebd5e45b0a5d071531d36f67c158 (diff) | |
ocfs2/o2hb: check len for bio_add_page() to avoid getting incorrect bio
We need to check len for bio_add_page() to make sure the bio has been
set up correctly, otherwise we may submit incorrect data to device.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Jun Piao <[email protected]>
Reviewed-by: Yiwen Jiang <[email protected]>
Reviewed-by: Changwei Ge <[email protected]>
Acked-by: Joseph Qi <[email protected]>
Cc: Mark Fasheh <[email protected]>
Cc: Joel Becker <[email protected]>
Cc: Junxiao Bi <[email protected]>
Cc: Changwei Ge <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | fs/ocfs2/cluster/heartbeat.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index ea8c551bcd7e..91a8889abf9b 100644 --- a/fs/ocfs2/cluster/heartbeat.c +++ b/fs/ocfs2/cluster/heartbeat.c @@ -570,7 +570,16 @@ static struct bio *o2hb_setup_one_bio(struct o2hb_region *reg, current_page, vec_len, vec_start); len = bio_add_page(bio, page, vec_len, vec_start); - if (len != vec_len) break; + if (len != vec_len) { + mlog(ML_ERROR, "Adding page[%d] to bio failed, " + "page %p, len %d, vec_len %u, vec_start %u, " + "bi_sector %llu\n", current_page, page, len, + vec_len, vec_start, + (unsigned long long)bio->bi_iter.bi_sector); + bio_put(bio); + bio = ERR_PTR(-EIO); + return bio; + } cs += vec_len / (PAGE_SIZE/spp); vec_start = 0; |