The OpenFlow15 Packet-Out message contains the whole match instead of the 
in_port.
The match has no assignment but used in oxm_put_match.

The coredump gdb backtrace is:
 #0  memcpy_from_metadata (dst=dst@entry=0x7ffcfac2f060, 
src=src@entry=0x7ffcfac30880, loc=loc@entry=0x10) at lib/tun-metadata.c:467
 #1  0x00000000004506e8 in metadata_loc_from_match_read (match=0x7ffcfac30598, 
is_masked=<synthetic pointer>, mask=0x7ffcfac30838, idx=0, map=0x0) at 
lib/tun-metadata.c:865
 #2  metadata_loc_from_match_read (is_masked=<synthetic pointer>, 
mask=0x7ffcfac30838, idx=0, match=0x7ffcfac30598, map=0x0) at 
lib/tun-metadata.c:854
 #3  tun_metadata_to_nx_match (b=b@entry=0x892260, oxm=oxm@entry=OFP15_VERSION, 
match=match@entry=0x7ffcfac30598) at lib/tun-metadata.c:888
 #4  0x000000000047c1f8 in nx_put_raw (b=b@entry=0x892260, 
oxm=oxm@entry=OFP15_VERSION, match=match@entry=0x7ffcfac30598, 
cookie=<optimized out>, cookie@entry=0,
     cookie_mask=<optimized out>, cookie_mask@entry=0) at lib/nx-match.c:1186
 #5  0x000000000047d693 in oxm_put_match (b=b@entry=0x892260, 
match=match@entry=0x7ffcfac30598, version=version@entry=OFP15_VERSION) at 
lib/nx-match.c:1343
 #6  0x000000000043194e in ofputil_encode_packet_out 
(po=po@entry=0x7ffcfac30580, protocol=<optimized out>) at lib/ofp-packet.c:1226
 #7  0x000000000040a4fe in process_packet_in (sw=sw@entry=0x891d70, 
oh=<optimized out>) at lib/learning-switch.c:619
 #8  0x000000000040acdc in lswitch_process_packet (msg=0x892210, sw=0x891d70) 
at lib/learning-switch.c:374
 #9  lswitch_run (sw=0x891d70) at lib/learning-switch.c:324
 #10 0x0000000000406f26 in main (argc=<optimized out>, argv=<optimized out>) at 
utilities/ovs-testcontroller.c:180

Fix that by setting the packet-out match instead of in_port.

Fixes: 577bfa9f6879 ("ofp-util: Add OpenFlow 1.5 packet-out support")
Signed-off-by: Faicker Mo <[email protected]>
---
 lib/learning-switch.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/learning-switch.c b/lib/learning-switch.c
index 8102475ca..b67163aca 100644
--- a/lib/learning-switch.c
+++ b/lib/learning-switch.c
@@ -577,8 +577,7 @@ process_packet_in(struct lswitch *sw, const struct 
ofp_header *oh)
         po.packet = NULL;
         po.packet_len = 0;
     }
-    match_set_in_port(&po.flow_metadata,
-                      pi.flow_metadata.flow.in_port.ofp_port);
+    flow_get_metadata(&flow, &po.flow_metadata);
     po.ofpacts = ofpacts.data;
     po.ofpacts_len = ofpacts.size;
 
-- 
2.39.1

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