Dear Maintainer, I could reproduce a crash inside a minimal Bookworm/testing amd64 qemu VM. There I took below backtrace [2].
Having msg_data->repl_buff equal NULL seems to be the issue. Upstream commit [1] looks related and a package built with this commit does not crash with the example command. Kind regards, Bernhard [1] https://github.com/nils-ohlmeier/sipsak/commit/8f132bb35b5ce55d76b2e0fc633ad0cc17bbff42 [2] $ rr sipsak -M -B Hi -c sip:benutzer@localhost -s sip:benutzer@localhost rr: Saving execution to trace directory `/home/benutzer/.local/share/rr/sipsak-0'. Speicherzugriffsfehler $ rr replay -o -q ... Program received signal SIGSEGV, Segmentation fault. 0x00007fbe6d455096 in __vsprintf_internal (string=0x0, maxlen=maxlen@entry=18446744073709551615, format=0x55e754af5540 "%s%ssip:sipsak@%s:%i;tag=%x\r\n%ssip:%s%s;tag=%o%o\r\n%s%u@%s\r\n%s%i %s\r\n%s0\r\n%s%s\r\n\r\n", args=args@entry=0x7ffc6c063840, mode_flags=mode_flags@entry=6) at iovsprintf.c:88 88 iovsprintf.c: Datei oder Verzeichnis nicht gefunden. (rr) bt #0 0x00007fbe6d455096 in __vsprintf_internal (string=0x0, maxlen=maxlen@entry=18446744073709551615, format=0x55e754af5540 "%s%ssip:sipsak@%s:%i;tag=%x\r\n%ssip:%s%s;tag=%o%o\r\n%s%u@%s\r\n%s%i %s\r\n%s0\r\n%s%s\r\n\r\n", args=args@entry=0x7ffc6c063840, mode_flags=mode_flags@entry=6) at iovsprintf.c:88 #1 0x00007fbe6d4eba3b in ___sprintf_chk (s=<optimized out>, flag=flag@entry=1, slen=slen@entry=18446744073709551615, format=format@entry=0x55e754af5540 "%s%ssip:sipsak@%s:%i;tag=%x\r\n%ssip:%s%s;tag=%o%o\r\n%s%u@%s\r\n%s%i %s\r\n%s0\r\n%s%s\r\n\r\n") at sprintf_chk.c:40 #2 0x000055e754aefb5e in sprintf (__fmt=0x55e754af5540 "%s%ssip:sipsak@%s:%i;tag=%x\r\n%ssip:%s%s;tag=%o%o\r\n%s%u@%s\r\n%s%i %s\r\n%s0\r\n%s%s\r\n\r\n", __s=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/stdio2.h:36 #3 create_msg (action=action@entry=4, msg_data=msg_data@entry=0x55e754afd840 <msg_data>) at src/request.c:227 #4 0x000055e754af2b41 in shoot (buf=buf@entry=0x7ffc6c065c10 "MESSAGE sip:benutzer@localhost SIP/2.0\r\nVia: SIP/2.0/UDP 127.0.1.1:59617;branch=z9hG4bK.1a7c9125;rport;alias\r\nTo: sip:benutzer@localhost\r\nCall-ID: 1272641755@127.0.1.1\r\nCSeq: 1 MESSAGE\r\nContent-Type: "..., buff_size=buff_size@entry=4096, options=options@entry=0x7ffc6c065b10) at src/shoot.c:986 #5 0x000055e754ae6c12 in main (argc=<optimized out>, argv=<optimized out>) at src/sipsak.c:1044 (rr) up (rr) up (rr) up #3 create_msg (action=action@entry=4, msg_data=msg_data@entry=0x55e754afd840 <msg_data>) at src/request.c:227 227 sprintf(msg_data->repl_buff, (rr) display/i $pc 1: x/i $pc => 0x55e754aefb5e <create_msg+2078>: add $0x90,%rsp (rr) list 225 } 226 add_via(req_buf_begin, msg_data->fqdn, msg_data->lport); 227 sprintf(msg_data->repl_buff, 228 "%s" 229 "%ssip:sipsak@%s:%i;tag=%x\r\n" 230 "%ssip:%s%s;tag=%o%o\r\n" 231 "%s%u@%s\r\n" 232 "%s%i %s\r\n" 233 "%s0\r\n" 234 "%s%s\r\n" 235 "\r\n", 236 SIP200_STR, 237 FROM_STR, msg_data->fqdn, msg_data->lport, c, 238 TO_STR, msg_data->username, msg_data->domainname, c, d, 239 CALL_STR, c, msg_data->fqdn, 240 CSEQ_STR, msg_data->cseq_counter, MES_STR, 241 CON_LEN_STR, 242 UA_STR, UA_VAL_STR); 243 break; (rr) print msg_data->repl_buff $1 = 0x0
