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more SIGSEGV descriptions

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This commit is contained in:
Kevin Tew 2010-04-26 14:20:37 -06:00
parent d2670835ce
commit 0a287b59e0
1 changed files with 12 additions and 4 deletions
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16
src/racket/gc2/sighand.c
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@ -50,8 +50,16 @@ void fault_handler(int sn, struct siginfo *si, void *ctx)
if (c == SEGV_MAPERR) {
printf("SIGSEGV MAPERR si_code %i fault on addr %p\n", c, p);
}
else {
printf("SIGSEGV ?????? SI_CODE %i fault on addr %p\n", c, p);
if (c == 0 ) {
/* I have now idea why this happens on linux */
/* supposedly its coming from the user via kill */
/* so just ignore it. */
printf("SIGSEGV SI_USER SI_CODE %i fault on addr %p\n", c, p);
printf("pid %i uid %i\n", si->si_pid, si->si_uid);
return;
}
if (c == 128 ) {
printf("SIGSEGV SI_KERNEL SI_CODE %i fault on addr %p sent by kernel\n", c, p);
}
#if WAIT_FOR_GDB
launchgdb();
@ -67,10 +75,10 @@ void fault_handler(int sn, struct siginfo *si, void *ctx)
printf("ADDR %p OWNED BY MASTER %i\n", p, m);
}
#endif
printf("mprotect fault on %p\n", p);
printf("SIGSEGV SEGV_ACCERR SI_CODE %i fault on %p\n", c, p);
}
else {
printf("?? %i fault on %p\n", si->si_code, p);
printf("SIGSEGV ???? SI_CODE %i fault on %p\n", c, p);
}
abort();
}