// https://syzkaller.appspot.com/bug?id=d158186b09ed6706400161b69da904faebdd1190 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifndef SYS_compat_50___msgctl13 #define SYS_compat_50___msgctl13 302 #endif #ifndef SYS_ioctl #define SYS_ioctl 54 #endif #ifndef SYS_mmap #define SYS_mmap 197 #endif #ifndef SYS_socket #define SYS_socket 394 #endif static unsigned long long procid; static void kill_and_wait(int pid, int* status) { kill(pid, SIGKILL); while (waitpid(-1, status, 0) != pid) { } } static void sleep_ms(uint64_t ms) { usleep(ms * 1000); } static uint64_t current_time_ms(void) { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) exit(1); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter = 0; for (;; iter++) { int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } } } uint64_t r[1] = {0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; *(uint64_t*)0x200003a0 = 0x200002c0; *(uint64_t*)0x200002c0 = 0x20000240; *(uint64_t*)0x20000240 = 0x20000180; *(uint64_t*)0x20000180 = 0; *(uint64_t*)0x20000188 = 6; *(uint16_t*)0x20000190 = 1; *(uint16_t*)0x20000192 = 0x8000; *(uint64_t*)0x20000248 = 0x100000000; *(uint16_t*)0x20000250 = 2; *(uint16_t*)0x20000252 = 0xb85a; *(uint64_t*)0x200002c8 = 0; *(uint16_t*)0x200002d0 = 6; *(uint16_t*)0x200002d2 = 0x3f; *(uint64_t*)0x200003a8 = 0; syscall(SYS_compat_50___msgctl13, /*msqid=*/-1, /*cmd=*/2ul, /*buf=*/0x20000340ul); res = syscall(SYS_socket, /*domain=PF_APPLETALK*/ 0x10ul, /*type=SOCK_DGRAM*/ 2ul, /*proto=*/0); if (res != -1) r[0] = res; *(uint64_t*)0x20000180 = 0x8000000100000031; syscall(SYS_ioctl, /*fd=*/r[0], /*cmd=*/0x8020690cul, /*arg=*/0x20000180ul); } int main(void) { syscall(SYS_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ*/ 3ul, /*flags=MAP_PRIVATE|MAP_FIXED|MAP_ANON*/ 0x1012ul, /*fd=*/-1, /*pad=*/0ul, /*offset=*/0ul); for (procid = 0; procid < 6; procid++) { if (fork() == 0) { loop(); } } sleep(1000000); return 0; }