// https://syzkaller.appspot.com/bug?id=65e38e5a8444d3c1d5869e6a2652299df9cd6233 // 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; } #define __syscall syscall static void execute_one(void); #define WAIT_FLAGS 0 static void loop(void) { int iter; for (iter = 0;; 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; syscall(SYS_write, -1, 0x20000140, 0); memcpy((void*)0x20000480, "/dev/vmm\000", 9); res = syscall(SYS_openat, 0xffffffffffffff9c, 0x20000480, 0, 0); if (res != -1) r[0] = res; *(uint32_t*)0x200000c0 = 1; *(uint32_t*)0x200000c4 = 0; *(uint64_t*)0x200000c8 = 1; *(uint64_t*)0x200000d0 = 0; *(uint64_t*)0x200000d8 = 0; *(uint64_t*)0x200000e0 = 0; *(uint64_t*)0x200000e8 = 0x40000000000; *(uint64_t*)0x200000f0 = 0x80000000; *(uint64_t*)0x200000f8 = 0; *(uint64_t*)0x20000100 = 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; *(uint64_t*)0x20000138 = 0; *(uint64_t*)0x20000140 = 0; *(uint64_t*)0x20000148 = 0; *(uint64_t*)0x20000150 = 0; *(uint64_t*)0x20000158 = 0; *(uint64_t*)0x20000160 = 0; *(uint64_t*)0x20000168 = 0; *(uint64_t*)0x20000170 = 0; *(uint64_t*)0x20000178 = 0; *(uint64_t*)0x20000180 = 0; *(uint64_t*)0x20000188 = 0; *(uint64_t*)0x20000190 = 0; *(uint64_t*)0x20000198 = 0; *(uint64_t*)0x200001a0 = 0; *(uint64_t*)0x200001a8 = 0; *(uint64_t*)0x200001b0 = 0; *(uint64_t*)0x200001b8 = 0; *(uint64_t*)0x200001c0 = 0; *(uint64_t*)0x200001c8 = 0; *(uint64_t*)0x200001d0 = 0; *(uint64_t*)0x200001d8 = 0; *(uint64_t*)0x200001e0 = 0; *(uint64_t*)0x200001e8 = 0; *(uint64_t*)0x200001f0 = 0; *(uint64_t*)0x200001f8 = 0; *(uint64_t*)0x20000200 = 0; *(uint64_t*)0x20000208 = 0; *(uint64_t*)0x20000210 = 0; *(uint16_t*)0x20000218 = 0; *(uint32_t*)0x2000021c = 0; *(uint32_t*)0x20000220 = 0; *(uint64_t*)0x20000228 = 0; *(uint16_t*)0x20000230 = 0; *(uint32_t*)0x20000234 = 0; *(uint32_t*)0x20000238 = 0; *(uint64_t*)0x20000240 = 0; *(uint16_t*)0x20000248 = 0; *(uint32_t*)0x2000024c = 0; *(uint32_t*)0x20000250 = 0; *(uint64_t*)0x20000258 = 0; *(uint16_t*)0x20000260 = 0; *(uint32_t*)0x20000264 = 0; *(uint32_t*)0x20000268 = 0; *(uint64_t*)0x20000270 = 0; *(uint16_t*)0x20000278 = 0; *(uint32_t*)0x2000027c = 0; *(uint32_t*)0x20000280 = 0; *(uint64_t*)0x20000288 = 0; *(uint16_t*)0x20000290 = 0; *(uint32_t*)0x20000294 = 0; *(uint32_t*)0x20000298 = 0; *(uint64_t*)0x200002a0 = 0; *(uint16_t*)0x200002a8 = 0; *(uint32_t*)0x200002ac = 0; *(uint32_t*)0x200002b0 = 0; *(uint64_t*)0x200002b8 = 0; *(uint16_t*)0x200002c0 = 0; *(uint32_t*)0x200002c4 = 0; *(uint32_t*)0x200002c8 = 0; *(uint64_t*)0x200002d0 = 0; *(uint16_t*)0x200002d8 = 0; *(uint32_t*)0x200002dc = 0; *(uint32_t*)0x200002e0 = 0; *(uint64_t*)0x200002e8 = 0; *(uint16_t*)0x200002f0 = 0; *(uint32_t*)0x200002f4 = 0; *(uint32_t*)0x200002f8 = 0; *(uint64_t*)0x20000300 = 0; syscall(SYS_ioctl, r[0], 0xc5005601, 0x200000c0); syscall(SYS_getsockopt, -1, 0xffff, 0x1022, 0, 0); syscall(SYS_ioctl, -1, 0x80104277, 0); syscall(SYS_msgget, 0, 0x123); } int main(void) { syscall(SYS_mmap, 0x20000000, 0x1000000, 3, 0x1012, -1, 0, 0); loop(); return 0; }