diff options
| author | Trond Myklebust | 2017-10-10 23:31:42 +0200 |
|---|---|---|
| committer | J. Bruce Fields | 2017-10-11 23:08:52 +0200 |
| commit | e9d4bf219c83d09579bc62512fea2ca10f025d93 (patch) | |
| tree | 514f53f3c1818b5bafc3f3e5866ae9bbd066f305 /include/trace | |
| parent | nfsd: use ARRAY_SIZE (diff) | |
| download | kernel-qcow2-linux-e9d4bf219c83d09579bc62512fea2ca10f025d93.tar.gz kernel-qcow2-linux-e9d4bf219c83d09579bc62512fea2ca10f025d93.tar.xz kernel-qcow2-linux-e9d4bf219c83d09579bc62512fea2ca10f025d93.zip | |
SUNRPC: Fix tracepoint storage issues with svc_recv and svc_rqst_status
There is no guarantee that either the request or the svc_xprt exist
by the time we get round to printing the trace message.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'include/trace')
| -rw-r--r-- | include/trace/events/sunrpc.h | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/include/trace/events/sunrpc.h b/include/trace/events/sunrpc.h index 8a707f8a41c3..8a13e3903839 100644 --- a/include/trace/events/sunrpc.h +++ b/include/trace/events/sunrpc.h @@ -455,20 +455,22 @@ TRACE_EVENT(svc_recv, TP_ARGS(rqst, status), TP_STRUCT__entry( - __field(struct sockaddr *, addr) __field(__be32, xid) __field(int, status) __field(unsigned long, flags) + __dynamic_array(unsigned char, addr, rqst->rq_addrlen) ), TP_fast_assign( - __entry->addr = (struct sockaddr *)&rqst->rq_addr; __entry->xid = status > 0 ? rqst->rq_xid : 0; __entry->status = status; __entry->flags = rqst->rq_flags; + memcpy(__get_dynamic_array(addr), + &rqst->rq_addr, rqst->rq_addrlen); ), - TP_printk("addr=%pIScp xid=0x%x status=%d flags=%s", __entry->addr, + TP_printk("addr=%pIScp xid=0x%x status=%d flags=%s", + (struct sockaddr *)__get_dynamic_array(addr), be32_to_cpu(__entry->xid), __entry->status, show_rqstp_flags(__entry->flags)) ); @@ -513,22 +515,23 @@ DECLARE_EVENT_CLASS(svc_rqst_status, TP_ARGS(rqst, status), TP_STRUCT__entry( - __field(struct sockaddr *, addr) __field(__be32, xid) - __field(int, dropme) __field(int, status) __field(unsigned long, flags) + __dynamic_array(unsigned char, addr, rqst->rq_addrlen) ), TP_fast_assign( - __entry->addr = (struct sockaddr *)&rqst->rq_addr; __entry->xid = rqst->rq_xid; __entry->status = status; __entry->flags = rqst->rq_flags; + memcpy(__get_dynamic_array(addr), + &rqst->rq_addr, rqst->rq_addrlen); ), TP_printk("addr=%pIScp rq_xid=0x%x status=%d flags=%s", - __entry->addr, be32_to_cpu(__entry->xid), + (struct sockaddr *)__get_dynamic_array(addr), + be32_to_cpu(__entry->xid), __entry->status, show_rqstp_flags(__entry->flags)) ); |