| Message ID | 5ABC3EBE.5020807@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 18/3/29 09:17, piaojun wrote: > We need check len for bio_add_page() to make sure the bio has been set up > correctly, otherwise we may submit incorrect data to device. > > Signed-off-by: Jun Piao <piaojun@huawei.com> > Reviewed-by: Yiwen Jiang <jiangyiwen@huawei.com> > Reviewed-by: Changwei Ge <ge.changwei@h3c.com> Acked-by: Joseph Qi <jiangqi903@gmail.com> > --- > fs/ocfs2/cluster/heartbeat.c | 11 ++++++++++- > 1 file changed, 10 insertions(+), 1 deletion(-) > > diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c > index ea8c551..91a8889 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; >
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index ea8c551..91a8889 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;