From: "Yan, Zheng" <[email protected]>

The bug can cause NULL pointer dereference in write_partial_msg_pages

Signed-off-by: Zheng Yan <[email protected]>
---
 net/ceph/messenger.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index 1a80907..785b953 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -598,6 +598,7 @@ static void prepare_write_message(struct ceph_connection 
*con)
             le32_to_cpu(con->out_msg->footer.front_crc),
             le32_to_cpu(con->out_msg->footer.middle_crc));
 
+       m->bio_iter = NULL;
        /* is there a data payload? */
        if (le32_to_cpu(m->hdr.data_len) > 0) {
                /* initialize page iterator */
-- 
1.7.7.6

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