From: Ilya Dryomov <idryomov@xxxxxxxxx>
This patch has been added to the 4.1 stable tree. If you have any
objections, please let us know.
===============
[ Upstream commit dbc0d3caff5b7591e0cf8e34ca686ca6f4479ee1 ]
ceph_msg_footer is 21 bytes long, while ceph_msg_footer_old is only 13.
Don't skip too much when CEPH_FEATURE_MSG_AUTH isn't negotiated.
Cc: stable@xxxxxxxxxxxxxxx # 3.19+
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Reviewed-by: Alex Elder <elder@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
net/ceph/messenger.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index ff92dee..84201c2 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -1203,6 +1203,13 @@ static bool ceph_msg_data_advance(struct ceph_msg_data_cursor *cursor,
return new_piece;
}
+static size_t sizeof_footer(struct ceph_connection *con)
+{
+ return (con->peer_features & CEPH_FEATURE_MSG_AUTH) ?
+ sizeof(struct ceph_msg_footer) :
+ sizeof(struct ceph_msg_footer_old);
+}
+
static void prepare_message_data(struct ceph_msg *msg, u32 data_len)
{
BUG_ON(!msg);
@@ -2326,7 +2333,7 @@ static int read_partial_message(struct ceph_connection *con)
ceph_pr_addr(&con->peer_addr.in_addr),
seq, con->in_seq + 1);
con->in_base_pos = -front_len - middle_len - data_len -
- sizeof(m->footer);
+ sizeof_footer(con);
con->in_tag = CEPH_MSGR_TAG_READY;
return 1;
} else if ((s64)seq - (s64)con->in_seq > 1) {
@@ -2358,7 +2365,7 @@ static int read_partial_message(struct ceph_connection *con)
/* skip this message */
dout("alloc_msg said skip message\n");
con->in_base_pos = -front_len - middle_len - data_len -
- sizeof(m->footer);
+ sizeof_footer(con);
con->in_tag = CEPH_MSGR_TAG_READY;
con->in_seq++;
return 1;
--
2.5.0
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