// https://syzkaller.appspot.com/bug?id=779a64ccaefd969d5d9bc72a7c4fe39598d53884 // 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 #include #include #include #include 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 BITMASK(bf_off, bf_len) (((1ull << (bf_len)) - 1) << (bf_off)) #define STORE_BY_BITMASK(type, htobe, addr, val, bf_off, bf_len) \ *(type*)(addr) = \ htobe((htobe(*(type*)(addr)) & ~BITMASK((bf_off), (bf_len))) | \ (((type)(val) << (bf_off)) & BITMASK((bf_off), (bf_len)))) static bool write_file(const char* file, const char* what, ...) { char buf[1024]; va_list args; va_start(args, what); vsnprintf(buf, sizeof(buf), what, args); va_end(args); buf[sizeof(buf) - 1] = 0; int len = strlen(buf); int fd = open(file, O_WRONLY | O_CLOEXEC); if (fd == -1) return false; if (write(fd, buf, len) != len) { int err = errno; close(fd); errno = err; return false; } close(fd); return true; } static void kill_and_wait(int pid, int* status) { kill(-pid, SIGKILL); kill(pid, SIGKILL); int i; for (i = 0; i < 100; i++) { if (waitpid(-1, status, WNOHANG | __WALL) == pid) return; usleep(1000); } DIR* dir = opendir("/sys/fs/fuse/connections"); if (dir) { for (;;) { struct dirent* ent = readdir(dir); if (!ent) break; if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) continue; char abort[300]; snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort", ent->d_name); int fd = open(abort, O_WRONLY); if (fd == -1) { continue; } if (write(fd, abort, 1) < 0) { } close(fd); } closedir(dir); } else { } while (waitpid(-1, status, __WALL) != pid) { } } static void setup_test() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); write_file("/proc/self/oom_score_adj", "1000"); } static void execute_one(void); #define WAIT_FLAGS __WALL static void loop(void) { int iter; for (iter = 0;; iter++) { int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { setup_test(); 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[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; res = syscall(__NR_socket, 2ul, 2ul, 0ul); if (res != -1) r[0] = res; memcpy((void*)0x20000900, "filter\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000", 32); *(uint32_t*)0x20000920 = 0xe; *(uint32_t*)0x20000924 = 4; *(uint32_t*)0x20000928 = 0x2e8; *(uint32_t*)0x2000092c = 0; *(uint32_t*)0x20000930 = 0x98; *(uint32_t*)0x20000934 = 0x98; *(uint32_t*)0x20000938 = 0; *(uint32_t*)0x2000093c = 0x98; *(uint32_t*)0x20000940 = 0x250; *(uint32_t*)0x20000944 = 0x250; *(uint32_t*)0x20000948 = 0x250; *(uint32_t*)0x2000094c = 0x250; *(uint32_t*)0x20000950 = 0x250; *(uint32_t*)0x20000954 = 4; *(uint64_t*)0x20000958 = 0; *(uint32_t*)0x20000960 = htobe32(0xe0000001); *(uint32_t*)0x20000964 = htobe32(0); *(uint32_t*)0x20000968 = htobe32(0); *(uint32_t*)0x2000096c = htobe32(0); memcpy((void*)0x20000970, "hsr0\000\000\000\000\000\000\000\000\000\000\000\000", 16); memcpy((void*)0x20000980, "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16); *(uint8_t*)0x20000990 = 0; *(uint8_t*)0x200009a0 = 0; *(uint16_t*)0x200009b0 = 0; *(uint8_t*)0x200009b2 = 0; *(uint8_t*)0x200009b3 = 0; *(uint32_t*)0x200009b4 = 0; *(uint16_t*)0x200009b8 = 0x70; *(uint16_t*)0x200009ba = 0x98; *(uint32_t*)0x200009bc = 0; *(uint64_t*)0x200009c0 = 0; *(uint64_t*)0x200009c8 = 0; *(uint16_t*)0x200009d0 = 0x28; memcpy((void*)0x200009d2, "REJECT\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000", 29); *(uint8_t*)0x200009ef = 0; *(uint32_t*)0x200009f0 = 0; *(uint8_t*)0x200009f8 = 0; *(uint8_t*)0x200009f9 = 0; *(uint8_t*)0x200009fa = 0; *(uint8_t*)0x200009fb = 0; *(uint8_t*)0x200009fc = 0; *(uint8_t*)0x200009fd = 0; *(uint8_t*)0x200009fe = 0; *(uint8_t*)0x200009ff = 0; *(uint8_t*)0x20000a00 = 0; *(uint8_t*)0x20000a01 = 0; *(uint8_t*)0x20000a02 = 0; *(uint8_t*)0x20000a03 = 0; *(uint8_t*)0x20000a04 = 0; *(uint8_t*)0x20000a05 = 0; *(uint8_t*)0x20000a06 = 0; *(uint8_t*)0x20000a07 = 0; *(uint8_t*)0x20000a08 = 0; *(uint8_t*)0x20000a09 = 0; *(uint8_t*)0x20000a0a = 0; *(uint8_t*)0x20000a0b = 0; *(uint8_t*)0x20000a0c = 0; *(uint8_t*)0x20000a0d = 0; *(uint8_t*)0x20000a0e = 0; *(uint8_t*)0x20000a0f = 0; *(uint8_t*)0x20000a10 = 0; *(uint8_t*)0x20000a11 = 0; *(uint8_t*)0x20000a12 = 0; *(uint8_t*)0x20000a13 = 0; *(uint8_t*)0x20000a14 = 0; *(uint8_t*)0x20000a15 = 0; *(uint8_t*)0x20000a16 = 0; *(uint8_t*)0x20000a17 = 0; *(uint8_t*)0x20000a18 = 0; *(uint8_t*)0x20000a19 = 0; *(uint8_t*)0x20000a1a = 0; *(uint8_t*)0x20000a1b = 0; *(uint8_t*)0x20000a1c = 0; *(uint8_t*)0x20000a1d = 0; *(uint8_t*)0x20000a1e = 0; *(uint8_t*)0x20000a1f = 0; *(uint8_t*)0x20000a20 = 0; *(uint8_t*)0x20000a21 = 0; *(uint8_t*)0x20000a22 = 0; *(uint8_t*)0x20000a23 = 0; *(uint8_t*)0x20000a24 = 0; *(uint8_t*)0x20000a25 = 0; *(uint8_t*)0x20000a26 = 0; *(uint8_t*)0x20000a27 = 0; *(uint8_t*)0x20000a28 = 0; *(uint8_t*)0x20000a29 = 0; *(uint8_t*)0x20000a2a = 0; *(uint8_t*)0x20000a2b = 0; *(uint8_t*)0x20000a2c = 0; *(uint8_t*)0x20000a2d = 0; *(uint8_t*)0x20000a2e = 0; *(uint8_t*)0x20000a2f = 0; *(uint8_t*)0x20000a30 = 0; *(uint8_t*)0x20000a31 = 0; *(uint8_t*)0x20000a32 = 0; *(uint8_t*)0x20000a33 = 0; *(uint8_t*)0x20000a34 = 0; *(uint8_t*)0x20000a35 = 0; *(uint8_t*)0x20000a36 = 0; *(uint8_t*)0x20000a37 = 0; *(uint8_t*)0x20000a38 = 0; *(uint8_t*)0x20000a39 = 0; *(uint8_t*)0x20000a3a = 0; *(uint8_t*)0x20000a3b = 0; *(uint8_t*)0x20000a3c = 0; *(uint8_t*)0x20000a3d = 0; *(uint8_t*)0x20000a3e = 0; *(uint8_t*)0x20000a3f = 0; *(uint8_t*)0x20000a40 = 0; *(uint8_t*)0x20000a41 = 0; *(uint8_t*)0x20000a42 = 0; *(uint8_t*)0x20000a43 = 0; *(uint8_t*)0x20000a44 = 0; *(uint8_t*)0x20000a45 = 0; *(uint8_t*)0x20000a46 = 0; *(uint8_t*)0x20000a47 = 0; *(uint8_t*)0x20000a48 = 0; *(uint8_t*)0x20000a49 = 0; *(uint8_t*)0x20000a4a = 0; *(uint8_t*)0x20000a4b = 0; *(uint32_t*)0x20000a4c = 0; *(uint16_t*)0x20000a50 = 0xd8; *(uint16_t*)0x20000a52 = 0x100; *(uint32_t*)0x20000a54 = 0; *(uint64_t*)0x20000a58 = 0; *(uint64_t*)0x20000a60 = 0; *(uint16_t*)0x20000a68 = 0x68; memcpy((void*)0x20000a6a, "physdev\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000", 29); *(uint8_t*)0x20000a87 = 0; memcpy((void*)0x20000a88, "vlan0\000\000\000\000\000\000\000\000\000\000\000", 16); *(uint8_t*)0x20000a98 = 0; memcpy((void*)0x20000aa8, "veth0_to_team\000\000\000", 16); *(uint8_t*)0x20000ab8 = 0; *(uint8_t*)0x20000ac8 = 0; *(uint8_t*)0x20000ac9 = 1; *(uint16_t*)0x20000ad0 = 0x28; memcpy((void*)0x20000ad2, "NFQUEUE\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000", 29); *(uint8_t*)0x20000aef = 3; *(uint16_t*)0x20000af0 = 0; *(uint16_t*)0x20000af2 = 4; *(uint16_t*)0x20000af4 = 0; *(uint32_t*)0x20000af8 = htobe32(0xe0000001); *(uint32_t*)0x20000afc = htobe32(-1); *(uint32_t*)0x20000b00 = htobe32(0); *(uint32_t*)0x20000b04 = htobe32(0); memcpy((void*)0x20000b08, "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16); memcpy((void*)0x20000b18, "bridge_slave_0\000\000", 16); *(uint8_t*)0x20000b28 = 0; *(uint8_t*)0x20000b38 = 0; *(uint16_t*)0x20000b48 = 0; *(uint8_t*)0x20000b4a = 0; *(uint8_t*)0x20000b4b = 0; *(uint32_t*)0x20000b4c = 0; *(uint16_t*)0x20000b50 = 0x70; *(uint16_t*)0x20000b52 = 0xb8; *(uint32_t*)0x20000b54 = 0; *(uint64_t*)0x20000b58 = 0; *(uint64_t*)0x20000b60 = 0; *(uint16_t*)0x20000b68 = 0x48; memcpy((void*)0x20000b6a, "TEE\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000", 29); *(uint8_t*)0x20000b87 = 1; *(uint32_t*)0x20000b88 = htobe32(0xe0000002); memcpy((void*)0x20000b98, "veth0_to_bond\000\000\000", 16); *(uint64_t*)0x20000ba8 = 0; *(uint8_t*)0x20000bb0 = 0; *(uint8_t*)0x20000bb1 = 0; *(uint8_t*)0x20000bb2 = 0; *(uint8_t*)0x20000bb3 = 0; *(uint8_t*)0x20000bb4 = 0; *(uint8_t*)0x20000bb5 = 0; *(uint8_t*)0x20000bb6 = 0; *(uint8_t*)0x20000bb7 = 0; *(uint8_t*)0x20000bb8 = 0; *(uint8_t*)0x20000bb9 = 0; *(uint8_t*)0x20000bba = 0; *(uint8_t*)0x20000bbb = 0; *(uint8_t*)0x20000bbc = 0; *(uint8_t*)0x20000bbd = 0; *(uint8_t*)0x20000bbe = 0; *(uint8_t*)0x20000bbf = 0; *(uint8_t*)0x20000bc0 = 0; *(uint8_t*)0x20000bc1 = 0; *(uint8_t*)0x20000bc2 = 0; *(uint8_t*)0x20000bc3 = 0; *(uint8_t*)0x20000bc4 = 0; *(uint8_t*)0x20000bc5 = 0; *(uint8_t*)0x20000bc6 = 0; *(uint8_t*)0x20000bc7 = 0; *(uint8_t*)0x20000bc8 = 0; *(uint8_t*)0x20000bc9 = 0; *(uint8_t*)0x20000bca = 0; *(uint8_t*)0x20000bcb = 0; *(uint8_t*)0x20000bcc = 0; *(uint8_t*)0x20000bcd = 0; *(uint8_t*)0x20000bce = 0; *(uint8_t*)0x20000bcf = 0; *(uint8_t*)0x20000bd0 = 0; *(uint8_t*)0x20000bd1 = 0; *(uint8_t*)0x20000bd2 = 0; *(uint8_t*)0x20000bd3 = 0; *(uint8_t*)0x20000bd4 = 0; *(uint8_t*)0x20000bd5 = 0; *(uint8_t*)0x20000bd6 = 0; *(uint8_t*)0x20000bd7 = 0; *(uint8_t*)0x20000bd8 = 0; *(uint8_t*)0x20000bd9 = 0; *(uint8_t*)0x20000bda = 0; *(uint8_t*)0x20000bdb = 0; *(uint8_t*)0x20000bdc = 0; *(uint8_t*)0x20000bdd = 0; *(uint8_t*)0x20000bde = 0; *(uint8_t*)0x20000bdf = 0; *(uint8_t*)0x20000be0 = 0; *(uint8_t*)0x20000be1 = 0; *(uint8_t*)0x20000be2 = 0; *(uint8_t*)0x20000be3 = 0; *(uint8_t*)0x20000be4 = 0; *(uint8_t*)0x20000be5 = 0; *(uint8_t*)0x20000be6 = 0; *(uint8_t*)0x20000be7 = 0; *(uint8_t*)0x20000be8 = 0; *(uint8_t*)0x20000be9 = 0; *(uint8_t*)0x20000bea = 0; *(uint8_t*)0x20000beb = 0; *(uint8_t*)0x20000bec = 0; *(uint8_t*)0x20000bed = 0; *(uint8_t*)0x20000bee = 0; *(uint8_t*)0x20000bef = 0; *(uint8_t*)0x20000bf0 = 0; *(uint8_t*)0x20000bf1 = 0; *(uint8_t*)0x20000bf2 = 0; *(uint8_t*)0x20000bf3 = 0; *(uint8_t*)0x20000bf4 = 0; *(uint8_t*)0x20000bf5 = 0; *(uint8_t*)0x20000bf6 = 0; *(uint8_t*)0x20000bf7 = 0; *(uint8_t*)0x20000bf8 = 0; *(uint8_t*)0x20000bf9 = 0; *(uint8_t*)0x20000bfa = 0; *(uint8_t*)0x20000bfb = 0; *(uint8_t*)0x20000bfc = 0; *(uint8_t*)0x20000bfd = 0; *(uint8_t*)0x20000bfe = 0; *(uint8_t*)0x20000bff = 0; *(uint8_t*)0x20000c00 = 0; *(uint8_t*)0x20000c01 = 0; *(uint8_t*)0x20000c02 = 0; *(uint8_t*)0x20000c03 = 0; *(uint32_t*)0x20000c04 = 0; *(uint16_t*)0x20000c08 = 0x70; *(uint16_t*)0x20000c0a = 0x98; *(uint32_t*)0x20000c0c = 0; *(uint64_t*)0x20000c10 = 0; *(uint64_t*)0x20000c18 = 0; *(uint16_t*)0x20000c20 = 0x28; memcpy((void*)0x20000c22, "\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000\000\000\000\000\000\000\000" "\000\000\000\000\000", 29); *(uint8_t*)0x20000c3f = 0; *(uint32_t*)0x20000c40 = 0xfffffffe; syscall(__NR_setsockopt, r[0], 0ul, 0x40ul, 0x20000900ul, 0x348ul); res = syscall(__NR_socket, 0x10ul, 3ul, 0ul); if (res != -1) r[1] = res; *(uint64_t*)0x20000040 = 0; *(uint32_t*)0x20000048 = 0; *(uint64_t*)0x20000050 = 0x20000000; *(uint64_t*)0x20000000 = 0x20000740; memcpy((void*)0x20000740, "\x48\x00\x00\x00\x10\x00\x05\x07\x00\x00\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x00", 20); *(uint32_t*)0x20000754 = -1; memcpy((void*)0x20000758, "\x00\x00\x00\x00\x00\x00\x00\x00\x28\x00\x12\x00" "\x0c\x00\x01\x00\x76\x65\x74\x68\x00\x00\x00\x00" "\x18\x00\x02\x00\x14\x00\x01\x00\x00\x00\x00\x00", 36); *(uint32_t*)0x2000077c = 0; memcpy((void*)0x20000780, "\x02\x00\xcb\x76\xea\x72\x11\x43\x9a\x32\x1f\x58\x9f\x32\xbe\x51\x3a" "\x25\xde\x0b\x60\x80\x88\xed\x10\xec\xd8\xf2\x55\x70\x5a\xdd\xfd\x40" "\xdf\x1c\x69\xc7\x99\xb0\xf8\x1a\x11\xab\x49\x71\xf9\x16\x66\x17\xa4" "\x97\xa1\x86\x03\x80\x7e\xea\xb9\x3d\x20\xca\x8f\x83\xd9\xcc\xed\x9e" "\x34\xe7\xd8\x43\x97\x6e\x82\x1b\xd4\xc9\xe3\x49\x97\xea\x21\x01\x81" "\x45\x1b\x14\x35\x21\x43\x5c\xb4\x98\x40\xb0\xf6\x12\x74\x42\x0a\x5d" "\x97\xe9\x82\xda\xd3\x92\x29\x21\xb5\x41\x90\x81\x74\xfe\x6b\x46\x58" "\xf9\xfb\x45\xd0\x47\xbe\xbf\x2d\xc6\x1f\xe0\x30\x6e\x99\x04\xe2\xc8" "\x35\x97\x8f\xed\xdb\x54\x0f\x59\xee\xe0\x02\xa3\xdb\xbe\xf4\x01\xe2" "\x45\xb8\xa7\xeb\x69\x00\x7c\x9d\x1e\xe3\xb4\xc6\x40\xa2\xa4\x17\xd1" "\x86\xa3\xcd\x4f\x0a\xb6\x14\xe1\xd2\xe1\x4c\x1e\x4f\x45\xef\x11\x0a" "\xd6\x78\x5f\x8a\xeb\xe5\xa7\x76\xde\xc0\x1a\xd6\x17\x1f\x70\xfb\x2e" "\x26\x57\x90\x68\x3f\x91\xfa\x41\x4d\x4a\xe6\x14\x0b\xe5\x67\x8d\xb1" "\x2f\x66\x0d\x1e\x20\x1b\x14\x81\x28\x12\xf9\xab\x59\xf9\x7f\x38\x1b" "\xdc\x6c\xca\xa0\x26\xdd\x9f\x13\xce\x75\xe5\x7a\x2e\x76\x43\x1e\x0a" "\xaa\xf4\x58\x10\xc2\x13\x57\xa2\x1d\x71\xea\xc9\x18\xbb\xd1\x5f\xd1" "\x44\xb7\x5d\x29\x0d\x6d\xd2\x0a\xdd\x3f\xd4\x1d\xd0\x98\xd3\xf9\xb4" "\x68\x44\x06\x65\xf9\x98\xc6\x2c\x4e\x33\xf6\x20\x3e\xa3\xd6\x1f\x82" "\x3e\xbf\xac\xb2\x4f\xac\x1f\xec\xb6\x9a\x41\x5c\x01\x34\x09\xd6\x1c" "\x73\xf0\x26\x10\xe1\x62\x17", 330); *(uint64_t*)0x20000008 = 0x48; *(uint64_t*)0x20000058 = 1; *(uint64_t*)0x20000060 = 0; *(uint64_t*)0x20000068 = 0; *(uint32_t*)0x20000070 = 0; syscall(__NR_sendmsg, r[1], 0x20000040ul, 0ul); syscall(__NR_sendmsg, -1, 0ul, 0ul); res = syscall(__NR_socket, 0x10ul, 3ul, 0xcul); if (res != -1) r[2] = res; *(uint64_t*)0x20000240 = 0; *(uint32_t*)0x20000248 = 0; *(uint64_t*)0x20000250 = 0x20000080; *(uint64_t*)0x20000080 = 0x200001c0; *(uint32_t*)0x200001c0 = 0x30; *(uint8_t*)0x200001c4 = 0; *(uint8_t*)0x200001c5 = 0xb; *(uint16_t*)0x200001c6 = 0xf7d7; *(uint32_t*)0x200001c8 = 0; *(uint32_t*)0x200001cc = 0; *(uint8_t*)0x200001d0 = 2; *(uint8_t*)0x200001d1 = 0; *(uint16_t*)0x200001d2 = htobe16(0); *(uint16_t*)0x200001d4 = 8; STORE_BY_BITMASK(uint16_t, , 0x200001d6, 2, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x200001d7, 1, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x200001d7, 0, 7, 1); *(uint32_t*)0x200001d8 = htobe32(0); *(uint16_t*)0x200001dc = 8; STORE_BY_BITMASK(uint16_t, , 0x200001de, 3, 0, 14); STORE_BY_BITMASK(uint16_t, , 0x200001df, 1, 6, 1); STORE_BY_BITMASK(uint16_t, , 0x200001df, 0, 7, 1); *(uint32_t*)0x200001e0 = htobe32(0); *(uint16_t*)0x200001e4 = 0xb; *(uint16_t*)0x200001e6 = 1; memcpy((void*)0x200001e8, "cgroup\000", 7); *(uint64_t*)0x20000088 = 0x30; *(uint64_t*)0x20000258 = 1; *(uint64_t*)0x20000260 = 0; *(uint64_t*)0x20000268 = 0; *(uint32_t*)0x20000270 = 0; syscall(__NR_sendmsg, r[2], 0x20000240ul, 0ul); } int main(void) { syscall(__NR_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x32ul, -1, 0); loop(); return 0; }