// https://syzkaller.appspot.com/bug?id=90cd06695bd4650a5228385b4b02f370ef9c219f // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #define BITMASK_LEN(type, bf_len) (type)((1ull << (bf_len)) - 1) #define BITMASK_LEN_OFF(type, bf_off, bf_len) \ (type)(BITMASK_LEN(type, (bf_len)) << (bf_off)) #define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len) \ if ((bf_off) == 0 && (bf_len) == 0) { \ *(type*)(addr) = (type)(val); \ } else { \ type new_val = *(type*)(addr); \ new_val &= ~BITMASK_LEN_OFF(type, (bf_off), (bf_len)); \ new_val |= ((type)(val)&BITMASK_LEN(type, (bf_len))) << (bf_off); \ *(type*)(addr) = new_val; \ } uint64_t r[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; int main() { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); long res = 0; *(uint32_t*)0x2025c000 = 2; *(uint32_t*)0x2025c004 = 0x70; *(uint8_t*)0x2025c008 = 0xe2; *(uint8_t*)0x2025c009 = 0; *(uint8_t*)0x2025c00a = 0; *(uint8_t*)0x2025c00b = 0; *(uint32_t*)0x2025c00c = 0; *(uint64_t*)0x2025c010 = 0; *(uint64_t*)0x2025c018 = 0; *(uint64_t*)0x2025c020 = 0; STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 0, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 1, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 2, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 3, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 4, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 5, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 6, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 7, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 8, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 9, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 10, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 11, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 12, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 13, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 14, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 15, 2); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 17, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 18, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 19, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 20, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 21, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 22, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 23, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 24, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 25, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 26, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 27, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 28, 1); STORE_BY_BITMASK(uint64_t, 0x2025c028, 0, 29, 35); *(uint32_t*)0x2025c030 = 0; *(uint32_t*)0x2025c034 = 0; *(uint64_t*)0x2025c038 = 0; *(uint64_t*)0x2025c040 = 0; *(uint64_t*)0x2025c048 = 0; *(uint64_t*)0x2025c050 = 0; *(uint32_t*)0x2025c058 = 0; *(uint32_t*)0x2025c05c = 0; *(uint64_t*)0x2025c060 = 0; *(uint32_t*)0x2025c068 = 0; *(uint16_t*)0x2025c06c = 0; *(uint16_t*)0x2025c06e = 0; res = syscall(__NR_perf_event_open, 0x2025c000, 0, 0, -1, 0); if (res != -1) r[0] = res; syscall(__NR_close, r[0]); res = syscall(__NR_socketpair, 1, 1, 0, 0x20000180); if (res != -1) r[1] = *(uint32_t*)0x20000184; syscall(__NR_ioctl, r[0], 0x8912, 0x400200); memcpy((void*)0x200000c0, "./file0", 8); res = syscall(__NR_openat, 0xffffffffffffff9c, 0x200000c0, 0x48800, 0x40); if (res != -1) r[2] = res; *(uint32_t*)0x200005c0 = 0xe8; syscall(__NR_getsockopt, r[1], 0, 0x11, 0x200004c0, 0x200005c0); memcpy((void*)0x20000140, "./bus", 6); syscall(__NR_fchownat, r[2], 0x20000140, 0, 0, 0x400); syscall(__NR_setns, -1, 0); *(uint16_t*)0x20000180 = 0xa; *(uint16_t*)0x20000182 = htobe16(0x4e20); *(uint32_t*)0x20000184 = 0; *(uint64_t*)0x20000188 = htobe64(0); *(uint64_t*)0x20000190 = htobe64(1); *(uint32_t*)0x20000198 = 0; syscall(__NR_bind, -1, 0x20000180, 0x1c); *(uint16_t*)0x208d4fe4 = 0xa; *(uint16_t*)0x208d4fe6 = htobe16(0x4e20); *(uint32_t*)0x208d4fe8 = 0; *(uint64_t*)0x208d4fec = htobe64(0); *(uint64_t*)0x208d4ff4 = htobe64(1); *(uint32_t*)0x208d4ffc = 0; syscall(__NR_sendto, -1, 0x20e77fff, 0x2bd, 0x20000008, 0x208d4fe4, 0x1c); syscall(__NR_ftruncate, -1, 0x7fff); memcpy((void*)0x20000000, "/dev/kvm", 9); res = syscall(__NR_openat, 0xffffffffffffff9c, 0x20000000, 0, 0); if (res != -1) r[3] = res; res = syscall(__NR_ioctl, r[3], 0xae01, 0); if (res != -1) r[4] = res; res = syscall(__NR_ioctl, r[4], 0xae41, 0); if (res != -1) r[5] = res; *(uint32_t*)0x200000c0 = 0x7b; *(uint32_t*)0x200000c4 = 0; *(uint64_t*)0x200000c8 = 0x40000000; *(uint64_t*)0x200000d0 = 0; *(uint64_t*)0x200000d8 = 0; *(uint64_t*)0x200000e0 = 0; *(uint8_t*)0x200000e8 = 0; *(uint8_t*)0x200000e9 = 0; *(uint8_t*)0x200000ea = 0; *(uint8_t*)0x200000eb = 0; *(uint8_t*)0x200000ec = 0; *(uint8_t*)0x200000ed = 0; *(uint8_t*)0x200000ee = 0; *(uint8_t*)0x200000ef = 0; *(uint8_t*)0x200000f0 = 0; *(uint8_t*)0x200000f1 = 0; *(uint8_t*)0x200000f2 = 0; *(uint8_t*)0x200000f3 = 0; *(uint8_t*)0x200000f4 = 0; *(uint8_t*)0x200000f5 = 0; *(uint8_t*)0x200000f6 = 0; *(uint8_t*)0x200000f7 = 0; *(uint8_t*)0x200000f8 = 0; *(uint8_t*)0x200000f9 = 0; *(uint8_t*)0x200000fa = 0; *(uint8_t*)0x200000fb = 0; *(uint8_t*)0x200000fc = 0; *(uint8_t*)0x200000fd = 0; *(uint8_t*)0x200000fe = 0; *(uint8_t*)0x200000ff = 0; *(uint8_t*)0x20000100 = 0; *(uint8_t*)0x20000101 = 0; *(uint8_t*)0x20000102 = 0; *(uint8_t*)0x20000103 = 0; *(uint8_t*)0x20000104 = 0; *(uint8_t*)0x20000105 = 0; *(uint8_t*)0x20000106 = 0; *(uint8_t*)0x20000107 = 0; *(uint8_t*)0x20000108 = 0; *(uint8_t*)0x20000109 = 0; *(uint8_t*)0x2000010a = 0; *(uint8_t*)0x2000010b = 0; *(uint8_t*)0x2000010c = 0; *(uint8_t*)0x2000010d = 0; *(uint8_t*)0x2000010e = 0; *(uint8_t*)0x2000010f = 0; *(uint8_t*)0x20000110 = 0; *(uint8_t*)0x20000111 = 0; *(uint8_t*)0x20000112 = 0; *(uint8_t*)0x20000113 = 0; *(uint8_t*)0x20000114 = 0; *(uint8_t*)0x20000115 = 0; *(uint8_t*)0x20000116 = 0; *(uint8_t*)0x20000117 = 0; *(uint8_t*)0x20000118 = 0; *(uint8_t*)0x20000119 = 0; *(uint8_t*)0x2000011a = 0; *(uint8_t*)0x2000011b = 0; *(uint8_t*)0x2000011c = 0; *(uint8_t*)0x2000011d = 0; *(uint8_t*)0x2000011e = 0; *(uint8_t*)0x2000011f = 0; *(uint8_t*)0x20000120 = 0; *(uint8_t*)0x20000121 = 0; *(uint8_t*)0x20000122 = 0; *(uint8_t*)0x20000123 = 0; *(uint8_t*)0x20000124 = 0; *(uint8_t*)0x20000125 = 0; *(uint8_t*)0x20000126 = 0; *(uint8_t*)0x20000127 = 0; syscall(__NR_ioctl, r[5], 0x4080aebf, 0x200000c0); syscall(__NR_setsockopt, -1, 0, 0x41, 0x20000300, 1); return 0; }