From: Yan, Zheng Date: Thu, 7 Jun 2012 00:35:55 +0000 (-0500) Subject: rbd: Clear ceph_msg->bio_iter for retransmitted message X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b132cf4c733f91bb4dd2277ea049243cf16e8b66;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git rbd: Clear ceph_msg->bio_iter for retransmitted message The bug can cause NULL pointer dereference in write_partial_msg_pages Signed-off-by: Zheng Yan Reviewed-by: Alex Elder (cherry picked from commit 43643528cce60ca184fe8197efa8e8da7c89a037) --- diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index 524f4e4f598b..b332c3d76059 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -563,6 +563,10 @@ 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),