// https://syzkaller.appspot.com/bug?id=6b3ab15f7c8115172c3558b6bb9b69f807561ea5 // 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_connect #define SYS_connect 98 #endif #ifndef SYS_ioctl #define SYS_ioctl 54 #endif #ifndef SYS_mmap #define SYS_mmap 197 #endif #ifndef SYS_msgctl #define SYS_msgctl 444 #endif #ifndef SYS_sendmsg #define SYS_sendmsg 28 #endif #ifndef SYS_setsockopt #define SYS_setsockopt 105 #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[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; *(uint32_t*)0x200000c0 = 0; *(uint32_t*)0x200000c4 = 0; *(uint32_t*)0x200000c8 = 0; *(uint32_t*)0x200000cc = 0; *(uint32_t*)0x200000d0 = 0; *(uint32_t*)0x200000d4 = 0xb2; *(uint16_t*)0x200000d8 = 0; *(uint16_t*)0x200000da = 0; *(uint64_t*)0x200000e0 = 0; *(uint64_t*)0x200000e8 = 0; *(uint64_t*)0x200000f0 = 0; *(uint64_t*)0x200000f8 = 0; *(uint32_t*)0x20000100 = 0; *(uint32_t*)0x20000104 = 0; *(uint64_t*)0x20000108 = 0; *(uint64_t*)0x20000110 = 0; *(uint64_t*)0x20000118 = 0; *(uint64_t*)0x20000120 = 0; *(uint64_t*)0x20000128 = 0; *(uint64_t*)0x20000130 = 0; syscall(SYS_msgctl, /*msqid=*/0, /*cmd=*/1ul, /*buf=*/0x200000c0ul); res = syscall(SYS_socket, /*domain=*/0x18ul, /*type=*/2ul, /*proto=*/0); if (res != -1) r[0] = res; *(uint16_t*)0x200000c0 = 0x18e6; *(uint8_t*)0x200000c2 = 7; *(uint32_t*)0x200000c4 = 0; syscall(SYS_connect, /*fd=*/r[0], /*addr=*/0x200000c0ul, /*addrlen=*/0x1cul); memcpy((void*)0x20000180, "\x67\x4c\xd6\xe5", 4); syscall(SYS_setsockopt, /*fd=*/r[0], /*level=*/0x29, /*optname=*/0x3e, /*optval=*/0x20000180ul, /*optlen=*/4ul); *(uint64_t*)0x20000480 = 0; *(uint32_t*)0x20000488 = 0; *(uint64_t*)0x20000490 = 0; *(uint64_t*)0x20000498 = 0; *(uint64_t*)0x200004a0 = 0; *(uint64_t*)0x200004a8 = 0; *(uint32_t*)0x200004b0 = 0; syscall(SYS_sendmsg, /*fd=*/r[0], /*msg=*/0x20000480ul, /*f=*/0ul); res = syscall(SYS_socket, /*domain=*/2ul, /*type=*/1ul, /*proto=*/0); if (res != -1) r[1] = res; *(uint64_t*)0x20000180 = 0x8000000000000032; syscall(SYS_ioctl, /*fd=*/r[1], /*cmd=*/0x8090697ful, /*arg=*/0x20000180ul); } int main(void) { syscall(SYS_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=*/3ul, /*flags=*/0x1012ul, /*fd=*/-1, /*pad=*/0ul, /*offset=*/0ul); for (procid = 0; procid < 6; procid++) { if (fork() == 0) { loop(); } } sleep(1000000); return 0; }