router_optimise freeze

[msaf1980]

carbon-c-relay freeze on load config (tested from master branch commit 0e77501. older versions also affected)

Stacktrace of interrupted program
(gdb) bt
#0 router_optimise (r=0x654200, threshold=50) at router.c:1629
#1 0x0000000000404e4d in main (argc=3, argv=0x7fffffffd588) at relay.c:834

1627 for (bwalk = blocks; bwalk != NULL; bwalk = blast) {
1628 if (bwalk->seqnr != seq) {
1629 seq++;
1630 blast = bwalk;
1631 continue;
1632 }

(gdb) p_v seq ; bwalk
"seq" = (long unsigned int) 247239617
"bwalk" = (block *) <0x7ffff7f8b6e8> { ptr = {
"pattern" = (char *) <0x7ffff7f8b728> { str_len:5 [0:399] = "STSOH" + \0 },
"hash" = (long unsigned int) 401,
"refcnt" = (long unsigned int) 2,
"seqnr" = (long unsigned int) 23,
"firstroute" = (route *) <0x7ffff7f898b0>,
"lastroute" = (route *) <0x7ffff7f89ba0>,
"prev" = (struct _block *) <0x7ffff7f8b690>,
"next" = (struct _block *) <0x7ffff7f8b788>,
} }

Config file
carbon-c-relay.txt

[grobian]

thanks, I'll have a look at it

[msaf1980]

Cycled link in linked list blocks ?

Breakpoint 3, router_optimise (r=0x654200, threshold=50) at router.c:1628
1628 if (bwalk->seqnr != seq) {
(gdb) p_v seq ; bwalk
"seq" = (long unsigned int) 24
"bwalk" = (block *) <0x7ffff7f8b730> { ptr = {
"pattern" = (char *) <0x7ffff7f8b770> { str_len:19 [0:399] = "emuloVknuhClacisyhp" + \0 },
"hash" = (long unsigned int) 1998,
"refcnt" = (long unsigned int) 1,
"seqnr" = (long unsigned int) 24,
"firstroute" = (route *) <0x7ffff7f89970>,
"lastroute" = (route *) <0x7ffff7f89970>,
"prev" = (struct _block *) <0x7ffff7f8b6e8>,
"next" = (struct _block *) <0x7ffff7f8b6e8>,
} }
(gdb) c
Continuing.

Breakpoint 3, router_optimise (r=0x654200, threshold=50) at router.c:1628
1628 if (bwalk->seqnr != seq) {
(gdb) p_v seq ; bwalk
"seq" = (long unsigned int) 24
"bwalk" = (block *) <0x7ffff7f8b6e8> { ptr = {
"pattern" = (char *) <0x7ffff7f8b728> { str_len:5 [0:399] = "STSOH" + \0 },
"hash" = (long unsigned int) 401,
"refcnt" = (long unsigned int) 2,
"seqnr" = (long unsigned int) 23,
"firstroute" = (route *) <0x7ffff7f898b0>,
"lastroute" = (route *) <0x7ffff7f89ba0>,
"prev" = (struct _block *) <0x7ffff7f8b690>,
"next" = (struct _block *) <0x7ffff7f8b788>,
} }

(gdb) c
Continuing.

Breakpoint 3, router_optimise (r=0x654200, threshold=50) at router.c:1628
1628 if (bwalk->seqnr != seq) {
(gdb) p_v seq ; bwalk
"seq" = (long unsigned int) 25
"bwalk" = (block *) <0x7ffff7f8b6e8> { ptr = {
"pattern" = (char *) <0x7ffff7f8b728> { str_len:5 [0:399] = "STSOH" + \0 },
"hash" = (long unsigned int) 401,
"refcnt" = (long unsigned int) 2,
"seqnr" = (long unsigned int) 23,
"firstroute" = (route *) <0x7ffff7f898b0>,
"lastroute" = (route *) <0x7ffff7f89ba0>,
"prev" = (struct _block *) <0x7ffff7f8b690>,
"next" = (struct _block *) <0x7ffff7f8b788>,
} }

On this step we going to forever loop
seq = 25
bwalk.seqnr = 23

[grobian]

yeah, must be an infinite loop

[grobian]

(just in case, you can disable the optimisation step using -O -1 should you be blocked by this issue)