renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-17 01:34:00 +08:00
Code

libceph: use the right footer size when skipping a message

Browse Source 
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@vger.kernel.org # 3.19+
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
This commit is contained in:
Ilya Dryomov 2016-02-19 11:38:57 +01:00
parent e7a88e82fe
commit dbc0d3caff
1 changed files with 9 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
net/ceph/messenger.c
View File

@ -1197,6 +1197,13 @@ 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);
@ -2335,7 +2342,7 @@ 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) {
@ -2360,7 +2367,7 @@ 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;