// https://syzkaller.appspot.com/bug?id=41dd0f37ca3e89882ecbf2c51f1741204b8fbd56 // 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 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 < 5 * 1000) continue; kill_and_wait(pid, &status); break; } } } uint64_t r[1] = {0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; res = syscall(SYS_socket, 0x1cul, 1ul, 0x84); if (res != -1) r[0] = res; *(uint32_t*)0x20000600 = 0; *(uint32_t*)0x20000604 = 7; syscall(SYS_setsockopt, r[0], 0x84, 0xe, 0x20000600ul, 8ul); *(uint8_t*)0x20000000 = 0x1c; *(uint8_t*)0x20000001 = 0x1c; *(uint16_t*)0x20000002 = htobe16(0x4e22); *(uint32_t*)0x20000004 = 0; *(uint8_t*)0x20000008 = 0; *(uint8_t*)0x20000009 = 0; *(uint8_t*)0x2000000a = 0; *(uint8_t*)0x2000000b = 0; *(uint8_t*)0x2000000c = 0; *(uint8_t*)0x2000000d = 0; *(uint8_t*)0x2000000e = 0; *(uint8_t*)0x2000000f = 0; *(uint8_t*)0x20000010 = 0; *(uint8_t*)0x20000011 = 0; *(uint8_t*)0x20000012 = 0; *(uint8_t*)0x20000013 = 0; *(uint8_t*)0x20000014 = 0; *(uint8_t*)0x20000015 = 0; *(uint8_t*)0x20000016 = 0; *(uint8_t*)0x20000017 = 0; *(uint32_t*)0x20000018 = 0; syscall(SYS_bind, r[0], 0x20000000ul, 0x1cul); *(uint8_t*)0x20000180 = 0x5f; *(uint8_t*)0x20000181 = 0x1c; *(uint16_t*)0x20000182 = htobe16(0x4e22); *(uint32_t*)0x20000184 = 0; *(uint64_t*)0x20000188 = htobe64(0); *(uint64_t*)0x20000190 = htobe64(1); *(uint32_t*)0x20000198 = 0; syscall(SYS_connect, r[0], 0x20000180ul, 0x1cul); syscall(SYS_shutdown, r[0], 0ul); *(uint64_t*)0x200005c0 = 0; *(uint32_t*)0x200005c8 = 0; *(uint64_t*)0x200005d0 = 0x20000280; *(uint64_t*)0x20000280 = 0x20000080; memcpy((void*)0x20000080, "\x40\x88\x10\x77\xb1\x7b\x84\x77\x51\x6b\xec\x66\xc1\xed\x57\xf9\x19" "\x22\x81\xf9\x1f\xec\x78\xeb\x36\x4b\xc8\x6e\x26\x1b\x06\x13\x6c\x16" "\xd6\xb8\xae\xc9\x19\x80\x18\xe2\x36\x35\x05\x7d\x40\x18\xdc\x61\x6d" "\x7f\x09\xf7\x57\x79\x6e\x11\xf7\xd3\x7c\x6e\xf6\x92\xaa\x28\xb6\xa0" "\x06\x8b\xc7\xf2\xba\xf2\x7f\xc5\x73\xb4\xba\xf2\x06\xaa\x00\x3b\xf7" "\xcc\x83\xcb\x51\x1f\x89\x29\x86\xf4\x24\x00\x3a\x53\x7a\xc8\xee\xa7" "\xdf\x44\xb4\x69\xdb\xbe\x43\xee\x78\x02\x9b\xcc\x07\x54\x92\x73\xe4" "\x1d\x78\xc7\xdd\x51\x80\x2e\xbb\x46\x3a\xf3\x2e\xf6\xf3\x62\x3c\x10" "\x01\xa7\xa3\xcc\x5c\x4a\x46\x7d\x97\x24\x75\xfe\x4e\xdc\x64\x74\x89", 153); *(uint64_t*)0x20000288 = 0x99; *(uint64_t*)0x200005d8 = 1; *(uint64_t*)0x200005e0 = 0; *(uint64_t*)0x200005e8 = 0x2e8; *(uint32_t*)0x200005f0 = 0; syscall(SYS_sendmsg, r[0], 0x200005c0ul, 0ul); } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 7ul, 0x1012ul, -1, 0ul); loop(); return 0; }