// https://syzkaller.appspot.com/bug?id=f9c94b10e49ae0433f27c4838c7e0f0a321606f5 // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include __attribute__((noreturn)) static void doexit(int status) { volatile unsigned i; syscall(__NR_exit_group, status); for (i = 0;; i++) { } } #include #include #include #include #include const int kFailStatus = 67; const int kRetryStatus = 69; static void fail(const char* msg, ...) { int e = errno; va_list args; va_start(args, msg); vfprintf(stderr, msg, args); va_end(args); fprintf(stderr, " (errno %d)\n", e); doexit((e == ENOMEM || e == EAGAIN) ? kRetryStatus : kFailStatus); } static uint64_t current_time_ms() { struct timespec ts; if (clock_gettime(CLOCK_MONOTONIC, &ts)) fail("clock_gettime failed"); return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000; } static void execute_one(); extern unsigned long long procid; static void loop() { int iter; for (iter = 0;; iter++) { int pid = fork(); if (pid < 0) fail("clone failed"); if (pid == 0) { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); execute_one(); int fd; for (fd = 3; fd < 30; fd++) close(fd); doexit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { int res = waitpid(-1, &status, __WALL | WNOHANG); if (res == pid) { break; } usleep(1000); if (current_time_ms() - start < 5 * 1000) continue; kill(-pid, SIGKILL); kill(pid, SIGKILL); while (waitpid(-1, &status, __WALL) != pid) { } break; } } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_one() { long res = 0; res = syscall(__NR_socket, 0xa, 0x80002, 0x88); if (res != -1) r[0] = res; *(uint16_t*)0x20000080 = 0xa; *(uint16_t*)0x20000082 = htobe16(0x4e23); *(uint32_t*)0x20000084 = 0; *(uint8_t*)0x20000088 = 0; *(uint8_t*)0x20000089 = 0; *(uint8_t*)0x2000008a = 0; *(uint8_t*)0x2000008b = 0; *(uint8_t*)0x2000008c = 0; *(uint8_t*)0x2000008d = 0; *(uint8_t*)0x2000008e = 0; *(uint8_t*)0x2000008f = 0; *(uint8_t*)0x20000090 = 0; *(uint8_t*)0x20000091 = 0; *(uint8_t*)0x20000092 = 0; *(uint8_t*)0x20000093 = 0; *(uint8_t*)0x20000094 = 0; *(uint8_t*)0x20000095 = 0; *(uint8_t*)0x20000096 = 0; *(uint8_t*)0x20000097 = 0; *(uint32_t*)0x20000098 = 0; syscall(__NR_bind, r[0], 0x20000080, 0x1c); *(uint16_t*)0x20000440 = 0xa; *(uint16_t*)0x20000442 = htobe16(0x4e23); *(uint32_t*)0x20000444 = 0; *(uint8_t*)0x20000448 = -1; *(uint8_t*)0x20000449 = 2; *(uint8_t*)0x2000044a = 0; *(uint8_t*)0x2000044b = 0; *(uint8_t*)0x2000044c = 0; *(uint8_t*)0x2000044d = 0; *(uint8_t*)0x2000044e = 0; *(uint8_t*)0x2000044f = 0; *(uint8_t*)0x20000450 = 0; *(uint8_t*)0x20000451 = 0; *(uint8_t*)0x20000452 = 0; *(uint8_t*)0x20000453 = 0; *(uint8_t*)0x20000454 = 0; *(uint8_t*)0x20000455 = 0; *(uint8_t*)0x20000456 = 0; *(uint8_t*)0x20000457 = 1; *(uint32_t*)0x20000458 = 0; syscall(__NR_sendto, r[0], 0x20000080, 0, 0x4048080, 0x20000440, 0x1c); *(uint16_t*)0x20000000 = 0xa; *(uint16_t*)0x20000002 = htobe16(0); *(uint32_t*)0x20000004 = 3; *(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(__NR_sendto, r[0], 0x20000140, 0, 0, 0x20000000, 0x1c); res = syscall(__NR_socket, 0x10, 3, 6); if (res != -1) r[1] = res; *(uint64_t*)0x20000080 = 0x20000040; *(uint16_t*)0x20000040 = 0x10; *(uint16_t*)0x20000042 = 0; *(uint32_t*)0x20000044 = 0; *(uint32_t*)0x20000048 = 0; *(uint32_t*)0x20000088 = 0xc; *(uint64_t*)0x20000090 = 0x20000000; *(uint64_t*)0x20000000 = 0x200005c0; *(uint32_t*)0x200005c0 = 0xb8; *(uint16_t*)0x200005c4 = 0x19; *(uint16_t*)0x200005c6 = 0x407; *(uint32_t*)0x200005c8 = 0; *(uint32_t*)0x200005cc = 0; *(uint32_t*)0x200005d0 = htobe32(0x7f000001); *(uint8_t*)0x200005e0 = 0; *(uint8_t*)0x200005e1 = 0; *(uint8_t*)0x200005e2 = 0; *(uint8_t*)0x200005e3 = 0; *(uint8_t*)0x200005e4 = 0; *(uint8_t*)0x200005e5 = 0; *(uint8_t*)0x200005e6 = 0; *(uint8_t*)0x200005e7 = 0; *(uint8_t*)0x200005e8 = 0; *(uint8_t*)0x200005e9 = 0; *(uint8_t*)0x200005ea = -1; *(uint8_t*)0x200005eb = -1; *(uint8_t*)0x200005ec = 0xac; *(uint8_t*)0x200005ed = 0x14; *(uint8_t*)0x200005ee = 0x14; *(uint8_t*)0x200005ef = 0; *(uint16_t*)0x200005f0 = htobe16(0); *(uint16_t*)0x200005f2 = htobe16(0); *(uint16_t*)0x200005f4 = htobe16(0); *(uint16_t*)0x200005f6 = htobe16(0); *(uint16_t*)0x200005f8 = 2; *(uint8_t*)0x200005fa = 0; *(uint8_t*)0x200005fb = 0x9e; *(uint8_t*)0x200005fc = 0; *(uint32_t*)0x20000600 = 0; *(uint32_t*)0x20000604 = 0; *(uint64_t*)0x20000608 = 0; *(uint64_t*)0x20000610 = 0; *(uint64_t*)0x20000618 = 0; *(uint64_t*)0x20000620 = 0; *(uint64_t*)0x20000628 = 0; *(uint64_t*)0x20000630 = 0; *(uint64_t*)0x20000638 = 0; *(uint64_t*)0x20000640 = 0; *(uint64_t*)0x20000648 = 0; *(uint64_t*)0x20000650 = 0; *(uint64_t*)0x20000658 = 0; *(uint64_t*)0x20000660 = 0; *(uint32_t*)0x20000668 = 0; *(uint32_t*)0x2000066c = 0; *(uint8_t*)0x20000670 = 0; *(uint8_t*)0x20000671 = 0; *(uint8_t*)0x20000672 = 0; *(uint8_t*)0x20000673 = 0; *(uint64_t*)0x20000008 = 0xb8; *(uint64_t*)0x20000098 = 1; *(uint64_t*)0x200000a0 = 0; *(uint64_t*)0x200000a8 = 0; *(uint32_t*)0x200000b0 = 0; syscall(__NR_sendmsg, r[1], 0x20000080, 0); } int main() { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); for (;;) { loop(); } }