<!-- Kamailio Project uses GitHub Issues only for bugs in the code or feature requests. Please use this template only for bug reports. If you have questions about using Kamailio or related to its configuration file, ask on sr-users mailing list: * http://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users If you have questions about developing extensions to Kamailio or its existing C code, ask on sr-dev mailing list: * http://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev Please try to fill this template as much as possible for any issue. It helps the developers to troubleshoot the issue. If there is no content to be filled in a section, the entire section can be removed. You can delete the comments from the template sections when filling. You can delete next line and everything above before submitting (it is a comment). --> ### Description slow_timer proc exited with crash, kamailio kept running but tm transaction kept accumulating which will lead to shared memory exhaustion and crash. in line 1131 `ret=tl->f(*ticks, tl, tl->data);` f is null, reason of crash <!-- Explain what you did, what you expected to happen, and what actually happened. --> ### Troubleshooting #### Reproduction happens from time to time, not a way to reliably reproduce it. <!-- If the issue can be reproduced, describe how it can be done. --> #### Debugging Data <!-- If you got a core dump, use gdb to extract troubleshooting data - full backtrace, local variables and the list of the code at the issue location. gdb /path/to/kamailio /path/to/corefile bt full info locals list If you are familiar with gdb, feel free to attach more of what you consider to be relevant. --> ``` #0 0x0000000000000000 in ?? () #1 0x000000000049f648 in slow_timer_main () at core/timer.c:1131 #2 0x0000000000424b84 in main_loop () at main.c:1685 #3 0x000000000042b9d3 in main (argc=16, argv=0x7ffe568bcd08) at main.c:2663 (gdb) frame 1 #1 0x000000000049f648 in slow_timer_main () at core/timer.c:1131 1131 ret=tl->f(*ticks, tl, tl->data); (gdb) list 1126 #ifdef TIMER_DEBUG 1127 tl->expires_no++; 1128 #endif 1129 SET_RUNNING_SLOW(tl); 1130 UNLOCK_SLOW_TIMER_LIST(); 1131 ret=tl->f(*ticks, tl, tl->data); 1132 /* reset the configuration group handles */ 1133 cfg_reset_all(); 1134 if (ret==0){ 1135 /* one shot */ (gdb) p *tl $1 = {next = 0x0, prev = 0x0, expire = 938928580, initial_timeout = 80, data = 0x0, f = 0x0, flags = 768, slow_idx = 45488} (gdb) info locals n = 12 ret = 4294967295 tl = 0x7fb2d3c860d0 i = 432 __func__ = "slow_timer_main" ``` #### Log Messages <!-- Check the syslog file and if there are relevant log messages printed by Kamailio, add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). --> ``` (paste your log messages here) ``` #### SIP Traffic <!-- If the issue is exposed by processing specific SIP messages, grab them with ngrep or save in a pcap file, then add them next, or attach to issue, or provide a link to download them (e.g., to a pastebin site). --> ``` (paste your sip traffic here) ``` ### Possible Solutions <!-- If you found a solution or workaround for the issue, describe it. Ideally, provide a pull request with a fix. --> ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` 5.1.7 ``` * **Operating System**: <!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `uname -a`) --> ``` centos 7 ``` -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/1897