// autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #ifndef __NR_bpf #define __NR_bpf 321 #endif #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)))) uint64_t r[1] = {0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200001000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); const char* reason; (void)reason; intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } // bpf$PROG_LOAD arguments: [ // cmd: const = 0x5 (8 bytes) // arg: ptr[in, bpf_prog_t[flags[bpf_prog_type, int32], // bpf_prog_attach_types, bpf_btf_id[opt], fd_bpf_prog[opt]]] { // bpf_prog_t[flags[bpf_prog_type, int32], bpf_prog_attach_types, // bpf_btf_id[opt], fd_bpf_prog[opt]] { // type: bpf_prog_type = 0x1b (4 bytes) // ninsn: bytesize8 = 0x3 (4 bytes) // insns: ptr[in, bpf_instructions] { // union bpf_instructions { // framed: bpf_framed_program { // initr0: bpf_insn_init_r0 { // code: const = 0x18 (1 bytes) // dst: const = 0x0 (0 bytes) // src: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // imm: int32 = 0x400 (4 bytes) // code2: const = 0x0 (1 bytes) // regs2: const = 0x0 (1 bytes) // off2: const = 0x0 (2 bytes) // imm2: int32 = 0x800 (4 bytes) // } // body: array[bpf_insn] { // } // exit: bpf_insn_exit { // code: const = 0x95 (1 bytes) // regs: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // imm: const = 0x0 (4 bytes) // } // } // } // } // license: nil // loglev: int32 = 0x8 (4 bytes) // logsize: len = 0x0 (4 bytes) // log: nil // kern_version: bpf_kern_version = 0x40f00 (4 bytes) // flags: bpf_prog_load_flags = 0x2 (4 bytes) // prog_name: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00} // (length 0x10) prog_ifindex: ifindex (resource) expected_attach_type: // union bpf_prog_attach_types { // fallback: bpf_attach_types = 0x9 (4 bytes) // } // btf_fd: fd_btf (resource) // func_info_rec_size: const = 0x8 (4 bytes) // func_info: nil // func_info_cnt: len = 0x0 (4 bytes) // line_info_rec_size: const = 0x10 (4 bytes) // line_info: nil // line_info_cnt: len = 0x0 (4 bytes) // attach_btf_id: bpf_btf_id (resource) // attach_prog_fd: fd_bpf_prog (resource) // core_relo_cnt: len = 0x0 (4 bytes) // fd_array: nil // core_relos: nil // core_relo_rec_size: const = 0x10 (4 bytes) // log_true_size: int32 = 0x800 (4 bytes) // prog_token_fd: union _bpf_prog_t[flags[bpf_prog_type, int32], // bpf_prog_attach_types, bpf_btf_id[opt], // fd_bpf_prog[opt]]_prog_token_fd_wrapper { // void: buffer: {} (length 0x0) // } // pad: union _bpf_prog_t[flags[bpf_prog_type, int32], // bpf_prog_attach_types, bpf_btf_id[opt], // fd_bpf_prog[opt]]_pad_wrapper { // value: const = 0x0 (4 bytes) // } // } // } // size: len = 0x94 (8 bytes) // ] // returns fd_bpf_prog *(uint32_t*)0x2000000006c0 = 0x1b; *(uint32_t*)0x2000000006c4 = 3; *(uint64_t*)0x2000000006c8 = 0x200000000100; *(uint8_t*)0x200000000100 = 0x18; STORE_BY_BITMASK(uint8_t, , 0x200000000101, 0, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200000000101, 0, 4, 4); *(uint16_t*)0x200000000102 = 0; *(uint32_t*)0x200000000104 = 0x400; *(uint8_t*)0x200000000108 = 0; *(uint8_t*)0x200000000109 = 0; *(uint16_t*)0x20000000010a = 0; *(uint32_t*)0x20000000010c = 0x800; *(uint8_t*)0x200000000110 = 0x95; *(uint8_t*)0x200000000111 = 0; *(uint16_t*)0x200000000112 = 0; *(uint32_t*)0x200000000114 = 0; *(uint64_t*)0x2000000006d0 = 0; *(uint32_t*)0x2000000006d8 = 8; *(uint32_t*)0x2000000006dc = 0; *(uint64_t*)0x2000000006e0 = 0; *(uint32_t*)0x2000000006e8 = 0x40f00; *(uint32_t*)0x2000000006ec = 2; memset((void*)0x2000000006f0, 0, 16); *(uint32_t*)0x200000000700 = 0; *(uint32_t*)0x200000000704 = 9; *(uint32_t*)0x200000000708 = -1; *(uint32_t*)0x20000000070c = 8; *(uint64_t*)0x200000000710 = 0; *(uint32_t*)0x200000000718 = 0; *(uint32_t*)0x20000000071c = 0x10; *(uint64_t*)0x200000000720 = 0; *(uint32_t*)0x200000000728 = 0; *(uint32_t*)0x20000000072c = 0; *(uint32_t*)0x200000000730 = -1; *(uint32_t*)0x200000000734 = 0; *(uint64_t*)0x200000000738 = 0; *(uint64_t*)0x200000000740 = 0; *(uint32_t*)0x200000000748 = 0x10; *(uint32_t*)0x20000000074c = 0x800; *(uint32_t*)0x200000000750 = 0; syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x2000000006c0ul, /*size=*/0x94ul); // socket$kcm arguments: [ // domain: const = 0x2 (8 bytes) // type: kcm_socket_type = 0x200000000000001 (8 bytes) // proto: const = 0x0 (4 bytes) // ] // returns sock_kcm res = syscall(__NR_socket, /*domain=*/2ul, /*type=*/0x200000000000001ul, /*proto=*/0); if (res != -1) r[0] = res; // setsockopt$sock_attach_bpf arguments: [ // fd: sock (resource) // level: const = 0x1 (4 bytes) // optname: const = 0x50 (4 bytes) // optval: ptr[in, fd_bpf_prog] { // fd_bpf_prog (resource) // } // optlen: len = 0x48 (8 bytes) // ] *(uint32_t*)0x200000000100 = -1; syscall(__NR_setsockopt, /*fd=*/r[0], /*level=*/1, /*optname=*/0x50, /*optval=*/0x200000000100ul, /*optlen=*/0x48ul); return 0; }