Created attachment 216750 [details] patch Thanks to the slack channel and https://github.com/FRRouting/frr/pull/6772/files
root@dev12:/usr/ports/net/frr7 # lldb ./work/frr-frr-7.4/bgpd/.libs/bgpd -- --log stdout --log-level debug (lldb) target create "./work/frr-frr-7.4/bgpd/.libs/bgpd" Current executable set to './work/frr-frr-7.4/bgpd/.libs/bgpd' (x86_64). (lldb) settings set -- target.run-args "--log" "stdout" "--log-level" "debug" (lldb) run Process 73192 launching Process 73192 launched: '/usr/ports/net/frr7/work/frr-frr-7.4/bgpd/.libs/bgpd' (x86_64) Process 73192 stopped * thread #1, name = 'bgpd', stop reason = signal SIGBUS: hardware error frame #0: 0x00000008008526dc libc.so.7`memcpy + 188 libc.so.7`memcpy: -> 0x8008526dc <+188>: movl %edx, (%rdi) 0x8008526de <+190>: movl %r8d, -0x4(%rdi,%rcx) 0x8008526e3 <+195>: retq 0x8008526e4 <+196>: nopw %cs:(%rax,%rax) (lldb) bt * thread #1, name = 'bgpd', stop reason = signal SIGBUS: hardware error * frame #0: 0x00000008008526dc libc.so.7`memcpy + 188 frame #1: 0x00000008004e6de5 libfrr.so.0`vbprintfrr + 7509 frame #2: 0x00000008004e738a libfrr.so.0`vasnprintfrr + 90 frame #3: 0x00000008004e1e44 libfrr.so.0`zlog_msg_text + 84 frame #4: 0x00000008004e28e9 libfrr.so.0`zlog_fd + 441 frame #5: 0x00000008004e1caf libfrr.so.0`vzlog + 879 frame #6: 0x000000080048ee4d libfrr.so.0`___lldb_unnamed_symbol349$$libfrr.so.0 + 141 frame #7: 0x000000080048f2ce libfrr.so.0`frr_run + 334 frame #8: 0x00000000002a787f bgpd`main + 671 frame #9: 0x00000000002a710f bgpd`_start(ap=<unavailable>, cleanup=<unavailable>) at crt1.c:76:7 (lldb) Doing further debugging.
WITH_DeBUG: * thread #1, name = 'bgpd', stop reason = signal SIGBUS: hardware error * frame #0: 0x000000080094d6dc libc.so.7`memcpy + 188 frame #1: 0x00000008005e246c libfrr.so.0`io_print(iop=0x00007fffffffe360, ptr="bgpd", len=4) at printfcommon.h:78:2 frame #2: 0x00000008005e2283 libfrr.so.0`vbprintfrr(cb=0x00007fffffffe4d8, fmt0="%s %s starting: %svty@%d%s", ap=0x00007fffffffe540) at vfprintf.c:709:3 frame #3: 0x00000008005e31cb libfrr.so.0`vasnprintfrr(mt=0x00000008005f2540, out="", outsz=8191, fmt="%s %s starting: %svty@%d%s", ap=0x00007fffffffe540) at glue.c:103:8 frame #4: 0x00000008005d9c34 libfrr.so.0`zlog_msg_text(msg=0x000000080212f818, textlen=0x00007fffffffe6a0) at zlog.c:496:15 frame #5: 0x00000008005dae2a libfrr.so.0`zlog_fd(zt=0x0000000800c9a050, msgs=0x0000000802131c18, nmsgs=1) at zlog_targets.c:107:34 frame #6: 0x00000008005d944d libfrr.so.0`zlog_tls_buffer_flush at zlog.c:342:3 frame #7: 0x00000008005d9816 libfrr.so.0`vzlog_tls(zlog_tls=0x000000080212f800, prio=5, fmt="%s %s starting: %svty@%d%s", ap=0x00007fffffffe8e0) at zlog.c:442:3 frame #8: 0x00000008005d95eb libfrr.so.0`vzlog(prio=5, fmt="%s %s starting: %svty@%d%s", ap=0x00007fffffffe8e0) at zlog.c:454:3 frame #9: 0x0000000800553f6a libfrr.so.0`zlog(prio=5, fmt="%s %s starting: %svty@%d%s") at zlog.h:56:2 frame #10: 0x0000000800554551 libfrr.so.0`frr_run(master=0x0000000800cc1000) at libfrr.c:1061:2 frame #11: 0x00000000002afc5d bgpd`main(argc=5, argv=0x00007fffffffeb10) at bgp_main.c:498:2 frame #12: 0x00000000002af10f bgpd`_start(ap=<unavailable>, cleanup=<unavailable>) at crt1.c:76:7
(In reply to Juraj Lutter from comment #2) Do you mean that with this patch applied, it doesn't solve your crash?
OK, it does solve it. The patch was not applied properly the first time (due to my error). Confirmed, works.
A commit references this bug: Author: olivier Date: Fri Jul 24 20:21:33 UTC 2020 New revision: 543378 URL: https://svnweb.freebsd.org/changeset/ports/543378 Log: Fix crash on config read PR: 248249 Submitted by: pi Reported by: Raul Munos <raul.munoz@custos.es>, Juraj Lutter <juraj@lutter.sk> Changes: head/net/frr7/Makefile head/net/frr7/files/patch-lib_zlog.c
Thanks a lot Kurt!