diff options
Diffstat (limited to 'debuggerd/crasher.c')
| -rw-r--r-- | debuggerd/crasher.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/debuggerd/crasher.c b/debuggerd/crasher.c index e11d9af..9df3c64 100644 --- a/debuggerd/crasher.c +++ b/debuggerd/crasher.c @@ -7,6 +7,7 @@ #include <stdlib.h> #include <string.h> #include <sys/cdefs.h> +#include <sys/mman.h> #include <sys/ptrace.h> #include <sys/socket.h> #include <sys/wait.h> @@ -156,6 +157,10 @@ static int do_action(const char* arg) return EXIT_SUCCESS; } else if (!strcmp(arg, "heap-usage")) { abuse_heap(); + } else if (!strcmp(arg, "SIGSEGV-unmapped")) { + char* map = mmap(NULL, sizeof(int), PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); + munmap(map, sizeof(int)); + map[0] = '8'; } fprintf(stderr, "%s OP\n", __progname); @@ -175,6 +180,7 @@ static int do_action(const char* arg) fprintf(stderr, " SIGPIPE cause a SIGPIPE\n"); fprintf(stderr, " SIGSEGV cause a SIGSEGV at address 0x0 (synonym: crash)\n"); fprintf(stderr, " SIGSEGV-non-null cause a SIGSEGV at a non-zero address\n"); + fprintf(stderr, " SIGSEGV-unmapped mmap/munmap a region of memory and then attempt to access it\n"); fprintf(stderr, " SIGTRAP cause a SIGTRAP\n"); fprintf(stderr, "prefix any of the above with 'thread-' to not run\n"); fprintf(stderr, "on the process' main thread.\n"); |