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afl-untracer freebsd 13.1 and above update.

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with the new kern.elf*.allow_wx setting, we try
 to make sure we still can make the maps w/x,
fixing few build warnings while at it.
This commit is contained in:
David CARLIER
2022-12-23 12:06:40 +00:00
parent 0165ca8c6c
commit 401811a97d
1 changed files with 14 additions and 8 deletions
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22
utils/afl_untracer/afl-untracer.c
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@ -156,7 +156,7 @@ void read_library_information(void) {
*e = 0;
if (n[strlen(n) - 1] == '\n') n[strlen(n) - 1] = 0;
liblist[liblist_cnt].name = strdup(n);
liblist[liblist_cnt].name = (u8 *)strdup((char *)n);
liblist[liblist_cnt].addr_start = strtoull(b, NULL, 16);
liblist[liblist_cnt].addr_end = strtoull(m, NULL, 16);
if (debug)
@ -210,16 +210,16 @@ void read_library_information(void) {
!(region->kve_protection & KVME_PROT_EXEC)) {
liblist[liblist_cnt].name =
region->kve_path[0] != '\0' ? strdup(region->kve_path) : 0;
region->kve_path[0] != '\0' ? (u8 *)strdup(region->kve_path) : 0;
liblist[liblist_cnt].addr_start = region->kve_start;
liblist[liblist_cnt].addr_end = region->kve_end;
if (debug) {
fprintf(stderr, "%s:%x (%lx-%lx)\n", liblist[liblist_cnt].name,
liblist[liblist_cnt].addr_end - liblist[liblist_cnt].addr_start,
liblist[liblist_cnt].addr_start,
liblist[liblist_cnt].addr_end - 1);
fprintf(stderr, "%s:%lx (%lx-%lx)\n", liblist[liblist_cnt].name,
(unsigned long)(liblist[liblist_cnt].addr_end - liblist[liblist_cnt].addr_start),
(unsigned long)liblist[liblist_cnt].addr_start,
(unsigned long)(liblist[liblist_cnt].addr_end - 1));
}
@ -488,6 +488,12 @@ void setup_trap_instrumentation(void) {
uint32_t bitmap_index = 0;
#endif
#if defined(__FreeBSD__) && __FreeBSD_version >= 1301000
// We try to allow W/X pages despite kern.elf32/64.allow_wx system settings
int allow_wx = PROC_WX_MAPPINGS_PERMIT;
(void)procctl(P_PID, 0, PROC_WXMAP_CTL, &allow_wx);
#endif
while ((nread = getline(&line, &len, patches)) != -1) {
char *end = line + len;
@ -699,7 +705,7 @@ int main(int argc, char *argv[]) {
if (argc > 1) {
use_stdin = 0;
inputfile = argv[1];
inputfile = (u8 *)argv[1];
}
@ -732,7 +738,7 @@ int main(int argc, char *argv[]) {
if (pid) {
u32 status;
if (waitpid(pid, &status, 0) < 0) exit(1);
if (waitpid(pid, (int *)&status, 0) < 0) exit(1);
/* report the test case is done and wait for the next */
__afl_end_testcase(status);