diff options
Diffstat (limited to 'src/src/exim.c')
| -rw-r--r-- | src/src/exim.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/src/src/exim.c b/src/src/exim.c index 1a4b44945..6fde16a9c 100644 --- a/src/src/exim.c +++ b/src/src/exim.c @@ -17,6 +17,11 @@ Also a few functions that don't naturally fit elsewhere. */ # include <gnu/libc-version.h> #endif +#ifndef _TIME_H +# include <time.h> +#endif +#include <execinfo.h> /*XXX maybe glibc-only? */ + #ifdef USE_GNUTLS # include <gnutls/gnutls.h> # if GNUTLS_VERSION_NUMBER < 0x030103 && !defined(DISABLE_OCSP) @@ -24,10 +29,6 @@ Also a few functions that don't naturally fit elsewhere. */ # endif #endif -#ifndef _TIME_H -# include <time.h> -#endif - extern void init_lookup_list(void); @@ -261,6 +262,29 @@ exit(1); * Handler for SIGSEGV * ***********************************************/ +#define STACKDUMP_MAX 24 +void +stackdump(ucontext_t * ucontext) +{ +void * buf[STACKDUMP_MAX]; +char ** ss; +int nptrs = backtrace(buf, STACKDUMP_MAX); + +log_write(0, LOG_MAIN|LOG_PANIC, "backtrace\n"); +log_write(0, LOG_MAIN|LOG_PANIC, "---\n"); +if ((ss = backtrace_symbols(buf, nptrs))) + { + for (int i = 0; i < nptrs; i++) + log_write(0, LOG_MAIN|LOG_PANIC, "\t%s\n", ss[i]); + free(ss); + } +else + log_write(0, LOG_MAIN|LOG_PANIC, "backtrace_symbols: %s\n", strerror(errno)); +log_write(0, LOG_MAIN|LOG_PANIC, "---\n"); +} +#undef STACKDUMP_MAX + + static void #ifdef SA_SIGINFO segv_handler(int sig, siginfo_t * info, void * uctx) @@ -281,6 +305,7 @@ else log_write(0, LOG_MAIN|LOG_PANIC, "SIGSEGV (maybe attempt to write to immutable memory)"); if (process_info_len > 0) log_write(0, LOG_MAIN|LOG_PANIC, "SIGSEGV (%.*s)", process_info_len, process_info); +stackdump(uctx); signal(SIGSEGV, SIG_DFL); kill(getpid(), sig); } @@ -291,6 +316,7 @@ segv_handler(int sig) log_write(0, LOG_MAIN|LOG_PANIC, "SIGSEGV (maybe attempt to write to immutable memory)"); if (process_info_len > 0) log_write(0, LOG_MAIN|LOG_PANIC, "SIGSEGV (%.*s)", process_info_len, process_info); +stackdump(); signal(SIGSEGV, SIG_DFL); kill(getpid(), sig); } |