// https://syzkaller.appspot.com/bug?id=bcde46c146fb2963c9c4fd7729e759a3f95bfd2e // 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 280 #endif #ifndef __NR_mmap #define __NR_mmap 222 #endif uint64_t r[1] = {0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x20000000ul, /*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=*/0x21000000ul, /*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$MAP_CREATE arguments: [ // cmd: const = 0x0 (8 bytes) // arg: ptr[inout, array[ANYUNION]] { // array[ANYUNION] { // union ANYUNION { // ANYBLOB: buffer: {04 00 00 00 04 00 00 00 04 00 00 00 05} (length // 0xd) // } // } // } // size: len = 0x48 (8 bytes) // ] // returns fd_bpf_map memcpy((void*)0x200009c0, "\x04\x00\x00\x00\x04\x00\x00\x00\x04\x00\x00\x00\x05", 13); res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x200009c0ul, /*size=*/0x48ul); if (res != -1) r[0] = res; // bpf$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 = 0xc (4 bytes) // insns: ptr[inout, array[ANYUNION]] { // array[ANYUNION] { // union ANYUNION { // ANYBLOB: buffer: {18 00 00 00 00 00 00 00 00 00 00 00 00 00 00 // 00 18 11 00 00} (length 0x14) // } // union ANYUNION { // ANYRES32: ANYRES32 (resource) // } // union ANYUNION { // ANYBLOB: buffer: {00 00 00 00 00 00 00 00 b7 08 00 00 00 00 e7 // 05 7b 8a f8 ff 00 00 00 00 bf a2 00 00 00 00 00 00 07 02 00 00 // f8 ff ff ff b7 03 00 00 08 00 00 00 b7 04 00 00 00 00 00 00 85 // 00 00 00 16 00 00 00 95} (length 0x41) // } // } // } // license: nil // loglev: int32 = 0x0 (4 bytes) // logsize: len = 0x0 (4 bytes) // log: nil // kern_version: bpf_kern_version = 0x0 (4 bytes) // flags: bpf_prog_load_flags = 0x0 (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 = 0x0 (4 bytes) // func_info: nil // func_info_cnt: len = 0x0 (4 bytes) // line_info_rec_size: const = 0x0 (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 = 0x0 (4 bytes) // log_true_size: int32 = 0xe8c (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*)0x200000c0 = 0x1b; *(uint32_t*)0x200000c4 = 0xc; *(uint64_t*)0x200000c8 = 0x20000440; memcpy((void*)0x20000440, "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x18" "\x11\x00\x00", 20); *(uint32_t*)0x20000454 = r[0]; memcpy((void*)0x20000458, "\x00\x00\x00\x00\x00\x00\x00\x00\xb7\x08\x00\x00\x00\x00\xe7\x05\x7b" "\x8a\xf8\xff\x00\x00\x00\x00\xbf\xa2\x00\x00\x00\x00\x00\x00\x07\x02" "\x00\x00\xf8\xff\xff\xff\xb7\x03\x00\x00\x08\x00\x00\x00\xb7\x04\x00" "\x00\x00\x00\x00\x00\x85\x00\x00\x00\x16\x00\x00\x00\x95", 65); *(uint64_t*)0x200000d0 = 0; *(uint32_t*)0x200000d8 = 0; *(uint32_t*)0x200000dc = 0; *(uint64_t*)0x200000e0 = 0; *(uint32_t*)0x200000e8 = 0; *(uint32_t*)0x200000ec = 0; memset((void*)0x200000f0, 0, 16); *(uint32_t*)0x20000100 = 0; *(uint32_t*)0x20000104 = 9; *(uint32_t*)0x20000108 = -1; *(uint32_t*)0x2000010c = 0; *(uint64_t*)0x20000110 = 0; *(uint32_t*)0x20000118 = 0; *(uint32_t*)0x2000011c = 0; *(uint64_t*)0x20000120 = 0; *(uint32_t*)0x20000128 = 0; *(uint32_t*)0x2000012c = 0; *(uint32_t*)0x20000130 = 0; *(uint32_t*)0x20000134 = 0; *(uint64_t*)0x20000138 = 0; *(uint64_t*)0x20000140 = 0; *(uint32_t*)0x20000148 = 0; *(uint32_t*)0x2000014c = 0xe8c; *(uint32_t*)0x20000150 = 0; syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000c0ul, /*size=*/0x94ul); // 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 = 0x6 (4 bytes) // ninsn: bytesize8 = 0xc (4 bytes) // insns: ptr[inout, array[ANYUNION]] { // array[ANYUNION] { // } // } // license: ptr[in, buffer] { // buffer: {47 50 4c 00} (length 0x4) // } // loglev: int32 = 0x0 (4 bytes) // logsize: len = 0x0 (4 bytes) // log: nil // kern_version: bpf_kern_version = 0x41000 (4 bytes) // flags: bpf_prog_load_flags = 0x0 (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 = 0x4 (4 bytes) // } // btf_fd: fd_btf (resource) // func_info_rec_size: const = 0x0 (4 bytes) // func_info: nil // func_info_cnt: len = 0x0 (4 bytes) // line_info_rec_size: const = 0x0 (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 = 0x0 (4 bytes) // log_true_size: int32 = 0x0 (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*)0x20000800 = 6; *(uint32_t*)0x20000804 = 0xc; *(uint64_t*)0x20000808 = 0x20000440; *(uint64_t*)0x20000810 = 0x20000240; memcpy((void*)0x20000240, "GPL\000", 4); *(uint32_t*)0x20000818 = 0; *(uint32_t*)0x2000081c = 0; *(uint64_t*)0x20000820 = 0; *(uint32_t*)0x20000828 = 0x41000; *(uint32_t*)0x2000082c = 0; memset((void*)0x20000830, 0, 16); *(uint32_t*)0x20000840 = 0; *(uint32_t*)0x20000844 = 4; *(uint32_t*)0x20000848 = -1; *(uint32_t*)0x2000084c = 0; *(uint64_t*)0x20000850 = 0; *(uint32_t*)0x20000858 = 0; *(uint32_t*)0x2000085c = 0; *(uint64_t*)0x20000860 = 0; *(uint32_t*)0x20000868 = 0; *(uint32_t*)0x2000086c = 0; *(uint32_t*)0x20000870 = 0; *(uint32_t*)0x20000874 = 0; *(uint64_t*)0x20000878 = 0; *(uint64_t*)0x20000880 = 0; *(uint32_t*)0x20000888 = 0; *(uint32_t*)0x2000088c = 0; *(uint32_t*)0x20000890 = 0; syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000800ul, /*size=*/0x94ul); return 0; }