// https://syzkaller.appspot.com/bug?id=114d729f19149dfbf07f9bd211f337ec79de920e // 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___wait450 #define SYS___wait450 449 #endif #ifndef SYS_compat_43_ogetsockname #define SYS_compat_43_ogetsockname 150 #endif #ifndef SYS_fcntl #define SYS_fcntl 92 #endif #ifndef SYS_fktrace #define SYS_fktrace 288 #endif #ifndef SYS_fork #define SYS_fork 2 #endif #ifndef SYS_getpid #define SYS_getpid 20 #endif #ifndef SYS_ioctl #define SYS_ioctl 54 #endif #ifndef SYS_mknod #define SYS_mknod 450 #endif #ifndef SYS_mmap #define SYS_mmap 197 #endif #ifndef SYS_open #define SYS_open 5 #endif #ifndef SYS_openat #define SYS_openat 468 #endif #ifndef SYS_pipe #define SYS_pipe 42 #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[8] = {0xffffffffffffffff, 0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; syscall(SYS_mknod, 0ul, 0x2876ul, 0x40000800ul); res = syscall(SYS_open, 0ul, 0ul, 0ul); if (res != -1) r[0] = res; syscall(SYS_socket, 0x18ul, 4ul, 0x40); syscall(SYS_pipe, 0ul); res = syscall(SYS_getpid); if (res != -1) r[1] = res; syscall(SYS_fktrace, -1, 0ul, 4ul, r[1]); res = syscall(SYS_fork); if (res != -1) r[2] = res; syscall(SYS___wait450, r[2], 0ul, 2ul, 0ul); syscall(SYS_fktrace, -1, 0ul, 4ul, 0); syscall(SYS_fktrace, -1, 2ul, 0x40ul, 0); res = syscall(SYS_open, 0ul, 0x20ul, 7ul); if (res != -1) r[3] = res; res = syscall(SYS_fcntl, -1, 0xbul, -1); if (res != -1) r[4] = res; syscall(SYS_fcntl, r[4], 0ul, r[4]); syscall(SYS_ioctl, r[3], 0x4004667ful, 0ul); syscall(SYS_ioctl, r[0], 0x40207450ul, 0ul); syscall(SYS_openat, r[0], 0ul, 0x800ul, 0x800ul); res = syscall(SYS_socket, 6ul, 4ul, 1); if (res != -1) r[5] = res; syscall(SYS_compat_43_ogetsockname, r[5], 0ul, 0ul); memcpy((void*)0x20000000, "./file0\000", 8); syscall(SYS_mknod, 0x20000000ul, 0x2876ul, 0x40000800ul); memcpy((void*)0x20000080, "./file0\000", 8); res = syscall(SYS_open, 0x20000080ul, 0ul, 0ul); if (res != -1) r[6] = res; *(uint32_t*)0x20000140 = 5; *(uint32_t*)0x20000144 = 0; syscall(SYS_ioctl, r[6], 0x80047401ul, 0x20000140ul); memcpy((void*)0x20000080, "./file0\000", 8); res = syscall(SYS_open, 0x20000080ul, 0ul, 0ul); if (res != -1) r[7] = res; *(uint32_t*)0x200000c0 = 0xf4f40d4f; *(uint32_t*)0x200000c4 = 0; *(uint32_t*)0x200000c8 = 0; *(uint32_t*)0x200000cc = 0; *(uint32_t*)0x200000d0 = 9; *(uint32_t*)0x200000d4 = 0; *(uint32_t*)0x200000d8 = 0; *(uint32_t*)0x200000dc = 0; syscall(SYS_ioctl, r[7], 0x80047451ul, 0x200000c0ul); } int main(void) { syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul); for (procid = 0; procid < 6; procid++) { if (fork() == 0) { loop(); } } sleep(1000000); return 0; }