Commit 43643528 authored by Yan, Zheng's avatar Yan, Zheng Committed by Alex Elder

rbd: Clear ceph_msg->bio_iter for retransmitted message

The bug can cause NULL pointer dereference in write_partial_msg_pages
Signed-off-by: default avatarZheng Yan <zheng.z.yan@intel.com>
Reviewed-by: default avatarAlex Elder <elder@inktank.com>
parent 8921d114
......@@ -649,6 +649,10 @@ static void prepare_write_message(struct ceph_connection *con)
m->hdr.seq = cpu_to_le64(++con->out_seq);
m->needs_out_seq = false;
}
#ifdef CONFIG_BLOCK
else
m->bio_iter = NULL;
#endif
dout("prepare_write_message %p seq %lld type %d len %d+%d+%d %d pgs\n",
m, con->out_seq, le16_to_cpu(m->hdr.type),
......
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