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| author | Jeremy Harris <jgh146exb@wizmail.org> | 2021-05-16 15:37:18 +0100 |
|---|---|---|
| committer | Jeremy Harris <jgh146exb@wizmail.org> | 2021-06-28 00:30:02 +0100 |
| commit | 1f1633046e3e3828c11f23a72b03fd03e20fd6e8 (patch) | |
| tree | 3ea4277e78cf7e59661af3d4da6f6fec44b773fa | |
| parent | 1f7081b85e684302c091d8b35226ba3418c03f2b (diff) | |
| download | exim4-1f1633046e3e3828c11f23a72b03fd03e20fd6e8.tar.gz | |
paniclog sigsegv events
| -rw-r--r-- | src/src/exim.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/src/src/exim.c b/src/src/exim.c index eb1d83416..a42c48b2c 100644 --- a/src/src/exim.c +++ b/src/src/exim.c @@ -211,6 +211,19 @@ exit(1); } +/*********************************************** +* Handler for SIGSEGV * +***********************************************/ + +static void +segv_handler(int sig) +{ +log_write(0, LOG_MAIN|LOG_PANIC, "SIGSEGV (maybe attempt to write to immutable memory)"); +signal(SIGSEGV, SIG_DFL); +kill(getpid(), sig); +} + + /************************************************* * Handler for SIGUSR1 * *************************************************/ @@ -1805,7 +1818,8 @@ descriptive text. */ process_info = store_get(PROCESS_INFO_SIZE, TRUE); /* tainted */ set_process_info("initializing"); -os_restarting_signal(SIGUSR1, usr1_handler); +os_restarting_signal(SIGUSR1, usr1_handler); /* exiwhat */ +signal(SIGSEGV, segv_handler); /* log faults */ /* If running in a dockerized environment, the TERM signal is only delegated to the PID 1 if we request it by setting an signal handler */ @@ -5464,15 +5478,15 @@ that SIG_IGN works. */ if (!f.synchronous_delivery) { - #ifdef SA_NOCLDWAIT +#ifdef SA_NOCLDWAIT struct sigaction act; act.sa_handler = SIG_IGN; sigemptyset(&(act.sa_mask)); act.sa_flags = SA_NOCLDWAIT; sigaction(SIGCHLD, &act, NULL); - #else +#else signal(SIGCHLD, SIG_IGN); - #endif +#endif } /* Save the current store pool point, for resetting at the start of |