// https://syzkaller.appspot.com/bug?id=97b18d542380241d0129b473cec60e0330e73a14 // 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 #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)))) 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 int inject_fault(int nth) { int fd; fd = open("/proc/thread-self/fail-nth", O_RDWR); if (fd == -1) exit(1); char buf[16]; sprintf(buf, "%d", nth); if (write(fd, buf, strlen(buf)) != (ssize_t)strlen(buf)) exit(1); return fd; } static const char* setup_fault() { int fd = open("/proc/self/make-it-fail", O_WRONLY); if (fd == -1) return "CONFIG_FAULT_INJECTION is not enabled"; close(fd); fd = open("/proc/thread-self/fail-nth", O_WRONLY); if (fd == -1) return "kernel does not have systematic fault injection support"; close(fd); static struct { const char* file; const char* val; bool fatal; } files[] = { {"/sys/kernel/debug/failslab/ignore-gfp-wait", "N", true}, {"/sys/kernel/debug/fail_futex/ignore-private", "N", false}, {"/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", "N", false}, {"/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", "N", false}, {"/sys/kernel/debug/fail_page_alloc/min-order", "0", false}, }; unsigned i; for (i = 0; i < sizeof(files) / sizeof(files[0]); i++) { if (!write_file(files[i].file, files[i].val)) { if (files[i].fatal) return "failed to write fault injection file"; } } return NULL; } uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffffffff000ul, /*len=*/0x1000, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x200000000000ul, /*len=*/0x1000000, /*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=*/0x1000, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/(intptr_t)-1, /*offset=*/0ul); const char* reason; (void)reason; if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup " "failed: %s\n", reason); intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } // perf_event_open$cgroup arguments: [ // attr: ptr[in, perf_event_attr] { // perf_event_attr { // type: perf_event_type = 0x2 (4 bytes) // size: len = 0x80 (4 bytes) // config0: int8 = 0x12 (1 bytes) // config1: int8 = 0x2 (1 bytes) // config2: int8 = 0x0 (1 bytes) // config3: int8 = 0x0 (1 bytes) // config4: const = 0x0 (4 bytes) // sample_freq: int64 = 0x0 (8 bytes) // sample_type: perf_sample_type = 0x40 (8 bytes) // read_format: perf_read_format = 0x0 (8 bytes) // disabled: int64 = 0x0 (0 bytes) // inherit: int64 = 0x0 (0 bytes) // pinned: int64 = 0x0 (0 bytes) // exclusive: int64 = 0x0 (0 bytes) // exclude_user: int64 = 0x0 (0 bytes) // exclude_kernel: int64 = 0x0 (0 bytes) // exclude_hv: int64 = 0x0 (0 bytes) // exclude_idle: int64 = 0x0 (0 bytes) // mmap: int64 = 0x0 (0 bytes) // comm: int64 = 0x0 (0 bytes) // freq: int64 = 0x0 (0 bytes) // inherit_stat: int64 = 0x0 (0 bytes) // enable_on_exec: int64 = 0x0 (0 bytes) // task: int64 = 0x0 (0 bytes) // watermark: int64 = 0x0 (0 bytes) // precise_ip: int64 = 0x0 (0 bytes) // mmap_data: int64 = 0x0 (0 bytes) // sample_id_all: int64 = 0x0 (0 bytes) // exclude_host: int64 = 0x0 (0 bytes) // exclude_guest: int64 = 0x0 (0 bytes) // exclude_callchain_kernel: int64 = 0x0 (0 bytes) // exclude_callchain_user: int64 = 0x0 (0 bytes) // mmap2: int64 = 0x0 (0 bytes) // comm_exec: int64 = 0x0 (0 bytes) // use_clockid: int64 = 0x0 (0 bytes) // context_switch: int64 = 0x0 (0 bytes) // write_backward: int64 = 0x0 (0 bytes) // namespaces: int64 = 0x0 (0 bytes) // ksymbol: int64 = 0x0 (0 bytes) // bpf_event: int64 = 0x0 (0 bytes) // aux_output: int64 = 0x0 (0 bytes) // cgroup: int64 = 0x0 (0 bytes) // text_poke: int64 = 0x0 (0 bytes) // build_id: int64 = 0x0 (0 bytes) // inherit_thread: int64 = 0x0 (0 bytes) // remove_on_exec: int64 = 0x0 (0 bytes) // sigtrap: int64 = 0x0 (0 bytes) // __reserved_1: const = 0x0 (8 bytes) // wakeup_events: int32 = 0x4000 (4 bytes) // bp_type: perf_bp_type = 0x2 (4 bytes) // bp_config: union perf_bp_config { // perf_bp: perf_bp { // bp_addr: nil // bp_len: perf_bp_lens = 0x0 (8 bytes) // } // } // branch_sample_type: perf_branch_sample_type = 0x0 (8 bytes) // sample_regs_user: int64 = 0x8 (8 bytes) // sample_stack_user: int32 = 0x0 (4 bytes) // clockid: clock_type = 0x5 (4 bytes) // sample_regs_intr: int64 = 0x0 (8 bytes) // aux_watermark: int32 = 0x7fff (4 bytes) // sample_max_stack: int16 = 0xfffd (2 bytes) // __reserved_2: const = 0x0 (2 bytes) // aux_sample_size: int32 = 0x0 (4 bytes) // __reserved_3: const = 0x0 (4 bytes) // sig_data: int64 = 0x4 (8 bytes) // } // } // fd: fd_cgroup (resource) // cpu: intptr = 0x880000000000 (8 bytes) // group: fd_perf (resource) // flags: perf_flags_cgroup = 0x0 (8 bytes) // ] // returns fd_perf *(uint32_t*)0x2000000003c0 = 2; *(uint32_t*)0x2000000003c4 = 0x80; *(uint8_t*)0x2000000003c8 = 0x12; *(uint8_t*)0x2000000003c9 = 2; *(uint8_t*)0x2000000003ca = 0; *(uint8_t*)0x2000000003cb = 0; *(uint32_t*)0x2000000003cc = 0; *(uint64_t*)0x2000000003d0 = 0; *(uint64_t*)0x2000000003d8 = 0x40; *(uint64_t*)0x2000000003e0 = 0; STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 0, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 1, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 2, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 3, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 4, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 5, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 6, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 7, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 8, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 9, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 10, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 11, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 12, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 13, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 14, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 15, 2); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 17, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 18, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 19, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 20, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 21, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 22, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 23, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 24, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 25, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 26, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 27, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 28, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 29, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 30, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 31, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 32, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 33, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 34, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 35, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 36, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 37, 1); STORE_BY_BITMASK(uint64_t, , 0x2000000003e8, 0, 38, 26); *(uint32_t*)0x2000000003f0 = 0x4000; *(uint32_t*)0x2000000003f4 = 2; *(uint64_t*)0x2000000003f8 = 0; *(uint64_t*)0x200000000400 = 0; *(uint64_t*)0x200000000408 = 0; *(uint64_t*)0x200000000410 = 8; *(uint32_t*)0x200000000418 = 0; *(uint32_t*)0x20000000041c = 5; *(uint64_t*)0x200000000420 = 0; *(uint32_t*)0x200000000428 = 0x7fff; *(uint16_t*)0x20000000042c = 0xfffd; *(uint16_t*)0x20000000042e = 0; *(uint32_t*)0x200000000430 = 0; *(uint32_t*)0x200000000434 = 0; *(uint64_t*)0x200000000438 = 4; syscall(__NR_perf_event_open, /*attr=*/0x2000000003c0ul, /*fd=*/(intptr_t)-1, /*cpu=*/0x880000000000ul, /*group=*/(intptr_t)-1, /*flags=*/0ul); // bpf$MAP_CREATE arguments: [ // cmd: const = 0x0 (8 bytes) // arg: ptr[in, bpf_map_create_arg] { // union bpf_map_create_arg { // base: bpf_map_create_arg_t[flags[bpf_map_type, int32], int32, int32, // int32, flags[map_flags, int32], const[0, int64]] { // type: bpf_map_type = 0x1b (4 bytes) // ksize: int32 = 0x0 (4 bytes) // vsize: int32 = 0x0 (4 bytes) // max: int32 = 0x8000 (4 bytes) // flags: map_flags = 0x0 (4 bytes) // inner: fd_bpf_map (resource) // node: int32 = 0xffff (4 bytes) // map_name: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 // 00} (length 0x10) map_ifindex: ifindex (resource) btf_fd: fd_btf // (resource) btf_key_type_id: int32 = 0x0 (4 bytes) // btf_value_type_id: int32 = 0x0 (4 bytes) // btf_vmlinux_type_id: int32 = 0x0 (4 bytes) // map_extra: const = 0x0 (8 bytes) // value_type_btf_obj_fd: union // _bpf_map_create_arg_t[flags[bpf_map_type, int32], int32, int32, // int32, flags[map_flags, int32], const[0, // int64]]_value_type_btf_obj_fd_wrapper { // void: buffer: {} (length 0x0) // } // pad1: union _bpf_map_create_arg_t[flags[bpf_map_type, int32], // int32, int32, int32, flags[map_flags, int32], const[0, // int64]]_pad1_wrapper { // value: const = 0x0 (4 bytes) // } // map_token_fd: union _bpf_map_create_arg_t[flags[bpf_map_type, // int32], int32, int32, int32, flags[map_flags, int32], const[0, // int64]]_map_token_fd_wrapper { // void: buffer: {} (length 0x0) // } // pad2: union _bpf_map_create_arg_t[flags[bpf_map_type, int32], // int32, int32, int32, flags[map_flags, int32], const[0, // int64]]_pad2_wrapper { // value: const = 0x0 (4 bytes) // } // } // } // } // size: len = 0x50 (8 bytes) // ] // returns fd_bpf_map *(uint32_t*)0x2000000000c0 = 0x1b; *(uint32_t*)0x2000000000c4 = 0; *(uint32_t*)0x2000000000c8 = 0; *(uint32_t*)0x2000000000cc = 0x8000; *(uint32_t*)0x2000000000d0 = 0; *(uint32_t*)0x2000000000d4 = -1; *(uint32_t*)0x2000000000d8 = 0xffff; memset((void*)0x2000000000dc, 0, 16); *(uint32_t*)0x2000000000ec = 0; *(uint32_t*)0x2000000000f0 = -1; *(uint32_t*)0x2000000000f4 = 0; *(uint32_t*)0x2000000000f8 = 0; *(uint32_t*)0x2000000000fc = 0; *(uint64_t*)0x200000000100 = 0; *(uint32_t*)0x200000000108 = 0; *(uint32_t*)0x20000000010c = 0; res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x2000000000c0ul, /*size=*/0x50ul); if (res != -1) r[0] = res; // bpf$BPF_BTF_LOAD arguments: [ // cmd: const = 0x12 (8 bytes) // arg: ptr[in, bpf_btf_load] { // bpf_btf_load { // btf: ptr[inout, array[ANYUNION]] { // array[ANYUNION] { // union ANYUNION { // ANYBLOB: buffer: {9f eb 01 00 18 00 00 00 00 00 00 00 18 00 00 // 00 18 00 00 00 04 00 00 00 02 00 00 00 01 00 00 0c 02 00 00 00 // 00 00 00 00 00 00 00 0d 00 00 00 00 00 00 5f} (length 0x33) // } // } // } // btf_log_buf: nil // btf_size: bytesize = 0x34 (4 bytes) // btf_log_size: bytesize = 0x0 (4 bytes) // btf_log_level: int32 = 0x0 (4 bytes) // btf_log_true_size: int32 = 0x0 (4 bytes) // btf_flags: btf_load_flags = 0x0 (4 bytes) // btf_token_fd: union _bpf_btf_load_btf_token_fd_wrapper { // void: buffer: {} (length 0x0) // } // pad: union _bpf_btf_load_pad_wrapper { // value: const = 0x0 (4 bytes) // } // } // } // size: len = 0x20 (8 bytes) // ] // returns fd_btf *(uint64_t*)0x200000000140 = 0x200000000040; memcpy((void*)0x200000000040, "\x9f\xeb\x01\x00\x18\x00\x00\x00\x00\x00\x00\x00\x18\x00\x00\x00\x18" "\x00\x00\x00\x04\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x0c\x02\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0d\x00\x00\x00\x00\x00\x00\x5f", 51); *(uint64_t*)0x200000000148 = 0; *(uint32_t*)0x200000000150 = 0x34; *(uint32_t*)0x200000000154 = 0; *(uint32_t*)0x200000000158 = 0; *(uint32_t*)0x20000000015c = 0; *(uint32_t*)0x200000000160 = 0; *(uint32_t*)0x200000000164 = 0; res = syscall(__NR_bpf, /*cmd=*/0x12ul, /*arg=*/0x200000000140ul, /*size=*/0x20ul); if (res != -1) r[1] = res; // bpf$BPF_PROG_RAW_TRACEPOINT_LOAD arguments: [ // cmd: const = 0x5 (8 bytes) // arg: ptr[in, bpf_prog_t[flags[bpf_raw_tracepoint_prog_types, int32], // const[0, int32], const[0, int32], const[0, int32]]] { // bpf_prog_t[flags[bpf_raw_tracepoint_prog_types, int32], const[0, // int32], const[0, int32], const[0, int32]] { // type: bpf_raw_tracepoint_prog_types = 0x11 (4 bytes) // ninsn: bytesize8 = 0x3 (4 bytes) // insns: ptr[inout, array[ANYUNION]] { // array[ANYUNION] { // union ANYUNION { // ANYBLOB: buffer: {18 00 00 00 01 00 00 00 00 00 00 00 80 18 00 // 00 95 00 00 00 00 00 00 00} (length 0x18) // } // } // } // license: ptr[in, buffer] { // buffer: {47 50 4c 00} (length 0x4) // } // loglev: int32 = 0xc (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: // const = 0x0 (4 bytes) btf_fd: fd_btf (resource) func_info_rec_size: // const = 0x8 (4 bytes) func_info: ptr[in, bpf_func_info] { // bpf_func_info { // insn_off: int32 = 0x0 (4 bytes) // type_id: int32 = 0x1 (4 bytes) // } // } // func_info_cnt: len = 0x1 (4 bytes) // line_info_rec_size: const = 0x10 (4 bytes) // line_info: nil // line_info_cnt: len = 0x0 (4 bytes) // attach_btf_id: const = 0x0 (4 bytes) // attach_prog_fd: const = 0x0 (4 bytes) // 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 = 0x0 (4 bytes) // prog_token_fd: union // _bpf_prog_t[flags[bpf_raw_tracepoint_prog_types, int32], const[0, // int32], const[0, int32], const[0, int32]]_prog_token_fd_wrapper { // void: buffer: {} (length 0x0) // } // pad: union _bpf_prog_t[flags[bpf_raw_tracepoint_prog_types, int32], // const[0, int32], const[0, int32], const[0, int32]]_pad_wrapper { // value: const = 0x0 (4 bytes) // } // } // } // size: len = 0x94 (8 bytes) // ] // returns fd_bpf_prog_raw_tracepoint *(uint32_t*)0x200000000200 = 0x11; *(uint32_t*)0x200000000204 = 3; *(uint64_t*)0x200000000208 = 0x200000000100; memcpy((void*)0x200000000100, "\x18\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x80\x18\x00\x00\x95" "\x00\x00\x00\x00\x00\x00\x00", 24); *(uint64_t*)0x200000000210 = 0x200000000000; memcpy((void*)0x200000000000, "GPL\000", 4); *(uint32_t*)0x200000000218 = 0xc; *(uint32_t*)0x20000000021c = 0; *(uint64_t*)0x200000000220 = 0; *(uint32_t*)0x200000000228 = 0; *(uint32_t*)0x20000000022c = 0; memset((void*)0x200000000230, 0, 16); *(uint32_t*)0x200000000240 = 0; *(uint32_t*)0x200000000244 = 0; *(uint32_t*)0x200000000248 = r[1]; *(uint32_t*)0x20000000024c = 8; *(uint64_t*)0x200000000250 = 0x2000000000c0; *(uint32_t*)0x2000000000c0 = 0; *(uint32_t*)0x2000000000c4 = 1; *(uint32_t*)0x200000000258 = 1; *(uint32_t*)0x20000000025c = 0x10; *(uint64_t*)0x200000000260 = 0; *(uint32_t*)0x200000000268 = 0; *(uint32_t*)0x20000000026c = 0; *(uint32_t*)0x200000000270 = 0; *(uint32_t*)0x200000000274 = 0; *(uint64_t*)0x200000000278 = 0; *(uint64_t*)0x200000000280 = 0; *(uint32_t*)0x200000000288 = 0x10; *(uint32_t*)0x20000000028c = 0; *(uint32_t*)0x200000000290 = 0; res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000200ul, /*size=*/0x94ul); if (res != -1) r[2] = res; // bpf$ITER_CREATE arguments: [ // cmd: const = 0xb (8 bytes) // arg: ptr[in, bpf_iter_create_arg] { // bpf_iter_create_arg { // link_fd: fd_bpf_link (resource) // flags: const = 0x0 (4 bytes) // } // } // size: len = 0x0 (8 bytes) // ] // returns fd *(uint32_t*)0x200000000100 = -1; *(uint32_t*)0x200000000104 = 0; res = syscall(__NR_bpf, /*cmd=*/0xbul, /*arg=*/0x200000000100ul, /*size=*/0ul); if (res != -1) r[3] = res; // close arguments: [ // fd: fd (resource) // ] syscall(__NR_close, /*fd=*/3); // close arguments: [ // fd: fd (resource) // ] syscall(__NR_close, /*fd=*/r[3]); // bpf$BPF_PROG_WITH_BTFID_LOAD arguments: [ // cmd: const = 0x5 (8 bytes) // arg: ptr[in, bpf_prog_with_btfid] { // union bpf_prog_with_btfid { // bpf_ext: bpf_prog_t[const[BPF_PROG_TYPE_EXT, int32], const[0, // int32], int32[0:BTF_ID_MAX], fd_bpf_prog[opt]] { // type: const = 0x1a (4 bytes) // ninsn: bytesize8 = 0xf (4 bytes) // insns: ptr[in, bpf_instructions] { // union bpf_instructions { // ringbuf: bpf_program_ringbuf { // 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 = 0x8792 (4 bytes) // code2: const = 0x0 (1 bytes) // regs2: const = 0x0 (1 bytes) // off2: const = 0x0 (2 bytes) // imm2: int32 = 0x0 (4 bytes) // } // reserve: bpf_insn_ringbuf_reserve { // insn1: bpf_insn_map_fd_t[const[BPF_REG_1, int8:4], // ringbuf_map_fd] { // code: const = 0x18 (1 bytes) // dst: const = 0x1 (0 bytes) // src: const = 0x1 (1 bytes) // off: const = 0x0 (2 bytes) // imm: ringbuf_map_fd (resource) // code2: const = 0x0 (1 bytes) // regs2: const = 0x0 (1 bytes) // off2: const = 0x0 (2 bytes) // imm2: const = 0x0 (4 bytes) // } // insn2: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_MOV0, // const[BPF_REG_2, int8:4], const[0, int8:4], const[0, // int16], const[20, int32]] { // code_class: int8 = 0x7 (0 bytes) // code_s: int8 = 0x0 (0 bytes) // code_op: int8 = 0xb (1 bytes) // dst: const = 0x2 (0 bytes) // src: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // imm: const = 0x14 (4 bytes) // } // insn3: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_MOV0, // const[BPF_REG_3, int8:4], const[0, int8:4], const[0, // int16], const[0, int32]] { // code_class: int8 = 0x7 (0 bytes) // code_s: int8 = 0x0 (0 bytes) // code_op: int8 = 0xb (1 bytes) // dst: const = 0x3 (0 bytes) // src: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // imm: const = 0x0 (4 bytes) // } // insn4: // bpf_insn_call_helper_t[const[BPF_FUNC_ringbuf_reserve, // int32]] { // code: const = 0x85 (1 bytes) // regs: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // func: const = 0x83 (4 bytes) // } // insn5: bpf_insn_alu_t[BPF_ALU64, BPF_X0, BPF_MOV0, // const[BPF_REG_9, int8:4], const[BPF_REG_0, int8:4], // const[0, int16], const[0, int32]] { // code_class: int8 = 0x7 (0 bytes) // code_s: int8 = 0x1 (0 bytes) // code_op: int8 = 0xb (1 bytes) // dst: const = 0x9 (0 bytes) // src: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // imm: const = 0x0 (4 bytes) // } // } // null_check: bpf_insn_null_check[BPF_REG_9] { // cond_jump: bpf_insn_not_null_jmp[BPF_REG_9] { // code_class: const = 0x5 (0 bytes) // code_s: const = 0x0 (0 bytes) // code_op: const = 0x5 (1 bytes) // dst: const = 0x9 (0 bytes) // src: const = 0x0 (1 bytes) // off: const = 0x1 (2 bytes) // imm: const = 0x0 (4 bytes) // } // exit: bpf_insn_exit { // code: const = 0x95 (1 bytes) // regs: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // imm: const = 0x0 (4 bytes) // } // } // body: array[bpf_insn] { // } // free: bpf_insn_ringbuf_free { // insn1: bpf_insn_alu_t[BPF_ALU64, BPF_X0, BPF_MOV0, // const[BPF_REG_1, int8:4], const[BPF_REG_9, int8:4], // const[0, int16], const[0, int32]] { // code_class: int8 = 0x7 (0 bytes) // code_s: int8 = 0x1 (0 bytes) // code_op: int8 = 0xb (1 bytes) // dst: const = 0x1 (0 bytes) // src: const = 0x9 (1 bytes) // off: const = 0x0 (2 bytes) // imm: const = 0x0 (4 bytes) // } // insn2: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_MOV0, // const[BPF_REG_2, int8:4], const[0, int8:4], const[0, // int16], flags[bpf_ringbuf_wakeup_flags, int32]] { // code_class: int8 = 0x7 (0 bytes) // code_s: int8 = 0x0 (0 bytes) // code_op: int8 = 0xb (1 bytes) // dst: const = 0x2 (0 bytes) // src: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // imm: bpf_ringbuf_wakeup_flags = 0x2 (4 bytes) // } // insn3: // bpf_insn_call_helper_t[flags[bpf_helpers_ringbuf_free, // int32]] { // code: const = 0x85 (1 bytes) // regs: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // func: bpf_helpers_ringbuf_free = 0x84 (4 bytes) // } // insn4: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_MOV0, // const[BPF_REG_0, int8:4], const[0, int8:4], const[0, // int16], const[0, int32]] { // code_class: int8 = 0x7 (0 bytes) // code_s: int8 = 0x0 (0 bytes) // code_op: int8 = 0xb (1 bytes) // dst: const = 0x0 (0 bytes) // src: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // imm: const = 0x0 (4 bytes) // } // } // 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: ptr[in, buffer] { // buffer: {47 50 4c 00} (length 0x4) // } // loglev: int32 = 0x7 (4 bytes) // logsize: len = 0x0 (4 bytes) // log: nil // kern_version: bpf_kern_version = 0x40f00 (4 bytes) // flags: bpf_prog_load_flags = 0x20 (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: const = 0x18 (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: int32 = 0x1 (4 bytes) // 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 = 0x4a6 (4 bytes) // prog_token_fd: union _bpf_prog_t[const[BPF_PROG_TYPE_EXT, int32], // const[0, int32], int32[0:BTF_ID_MAX], // fd_bpf_prog[opt]]_prog_token_fd_wrapper { // void: buffer: {} (length 0x0) // } // pad: union _bpf_prog_t[const[BPF_PROG_TYPE_EXT, int32], const[0, // int32], int32[0:BTF_ID_MAX], fd_bpf_prog[opt]]_pad_wrapper { // value: const = 0x0 (4 bytes) // } // } // } // } // size: len = 0x94 (8 bytes) // ] // returns fd_bpf_prog_with_btfid *(uint32_t*)0x200000000500 = 0x1a; *(uint32_t*)0x200000000504 = 0xf; *(uint64_t*)0x200000000508 = 0x2000000002c0; *(uint8_t*)0x2000000002c0 = 0x18; STORE_BY_BITMASK(uint8_t, , 0x2000000002c1, 0, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x2000000002c1, 0, 4, 4); *(uint16_t*)0x2000000002c2 = 0; *(uint32_t*)0x2000000002c4 = 0x8792; *(uint8_t*)0x2000000002c8 = 0; *(uint8_t*)0x2000000002c9 = 0; *(uint16_t*)0x2000000002ca = 0; *(uint32_t*)0x2000000002cc = 0; *(uint8_t*)0x2000000002d0 = 0x18; STORE_BY_BITMASK(uint8_t, , 0x2000000002d1, 1, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x2000000002d1, 1, 4, 4); *(uint16_t*)0x2000000002d2 = 0; *(uint32_t*)0x2000000002d4 = r[0]; *(uint8_t*)0x2000000002d8 = 0; *(uint8_t*)0x2000000002d9 = 0; *(uint16_t*)0x2000000002da = 0; *(uint32_t*)0x2000000002dc = 0; STORE_BY_BITMASK(uint8_t, , 0x2000000002e0, 7, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x2000000002e0, 0, 3, 1); STORE_BY_BITMASK(uint8_t, , 0x2000000002e0, 0xb, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x2000000002e1, 2, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x2000000002e1, 0, 4, 4); *(uint16_t*)0x2000000002e2 = 0; *(uint32_t*)0x2000000002e4 = 0x14; STORE_BY_BITMASK(uint8_t, , 0x2000000002e8, 7, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x2000000002e8, 0, 3, 1); STORE_BY_BITMASK(uint8_t, , 0x2000000002e8, 0xb, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x2000000002e9, 3, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x2000000002e9, 0, 4, 4); *(uint16_t*)0x2000000002ea = 0; *(uint32_t*)0x2000000002ec = 0; *(uint8_t*)0x2000000002f0 = 0x85; *(uint8_t*)0x2000000002f1 = 0; *(uint16_t*)0x2000000002f2 = 0; *(uint32_t*)0x2000000002f4 = 0x83; STORE_BY_BITMASK(uint8_t, , 0x2000000002f8, 7, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x2000000002f8, 1, 3, 1); STORE_BY_BITMASK(uint8_t, , 0x2000000002f8, 0xb, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x2000000002f9, 9, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x2000000002f9, 0, 4, 4); *(uint16_t*)0x2000000002fa = 0; *(uint32_t*)0x2000000002fc = 0; STORE_BY_BITMASK(uint8_t, , 0x200000000300, 5, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x200000000300, 0, 3, 1); STORE_BY_BITMASK(uint8_t, , 0x200000000300, 5, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x200000000301, 9, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200000000301, 0, 4, 4); *(uint16_t*)0x200000000302 = 1; *(uint32_t*)0x200000000304 = 0; *(uint8_t*)0x200000000308 = 0x95; *(uint8_t*)0x200000000309 = 0; *(uint16_t*)0x20000000030a = 0; *(uint32_t*)0x20000000030c = 0; STORE_BY_BITMASK(uint8_t, , 0x200000000310, 7, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x200000000310, 1, 3, 1); STORE_BY_BITMASK(uint8_t, , 0x200000000310, 0xb, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x200000000311, 1, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200000000311, 9, 4, 4); *(uint16_t*)0x200000000312 = 0; *(uint32_t*)0x200000000314 = 0; STORE_BY_BITMASK(uint8_t, , 0x200000000318, 7, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x200000000318, 0, 3, 1); STORE_BY_BITMASK(uint8_t, , 0x200000000318, 0xb, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x200000000319, 2, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200000000319, 0, 4, 4); *(uint16_t*)0x20000000031a = 0; *(uint32_t*)0x20000000031c = 2; *(uint8_t*)0x200000000320 = 0x85; *(uint8_t*)0x200000000321 = 0; *(uint16_t*)0x200000000322 = 0; *(uint32_t*)0x200000000324 = 0x84; STORE_BY_BITMASK(uint8_t, , 0x200000000328, 7, 0, 3); STORE_BY_BITMASK(uint8_t, , 0x200000000328, 0, 3, 1); STORE_BY_BITMASK(uint8_t, , 0x200000000328, 0xb, 4, 4); STORE_BY_BITMASK(uint8_t, , 0x200000000329, 0, 0, 4); STORE_BY_BITMASK(uint8_t, , 0x200000000329, 0, 4, 4); *(uint16_t*)0x20000000032a = 0; *(uint32_t*)0x20000000032c = 0; *(uint8_t*)0x200000000330 = 0x95; *(uint8_t*)0x200000000331 = 0; *(uint16_t*)0x200000000332 = 0; *(uint32_t*)0x200000000334 = 0; *(uint64_t*)0x200000000510 = 0x200000000180; memcpy((void*)0x200000000180, "GPL\000", 4); *(uint32_t*)0x200000000518 = 7; *(uint32_t*)0x20000000051c = 0; *(uint64_t*)0x200000000520 = 0; *(uint32_t*)0x200000000528 = 0x40f00; *(uint32_t*)0x20000000052c = 0x20; memset((void*)0x200000000530, 0, 16); *(uint32_t*)0x200000000540 = 0; *(uint32_t*)0x200000000544 = 0x18; *(uint32_t*)0x200000000548 = r[1]; *(uint32_t*)0x20000000054c = 8; *(uint64_t*)0x200000000550 = 0; *(uint32_t*)0x200000000558 = 0; *(uint32_t*)0x20000000055c = 0x10; *(uint64_t*)0x200000000560 = 0; *(uint32_t*)0x200000000568 = 0; *(uint32_t*)0x20000000056c = 1; *(uint32_t*)0x200000000570 = r[2]; *(uint32_t*)0x200000000574 = 0; *(uint64_t*)0x200000000578 = 0; *(uint64_t*)0x200000000580 = 0; *(uint32_t*)0x200000000588 = 0x10; *(uint32_t*)0x20000000058c = 0x4a6; *(uint32_t*)0x200000000590 = 0; syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000500ul, /*size=*/0x94ul); // bpf$OBJ_PIN_PROG arguments: [ // cmd: const = 0x11 (8 bytes) // arg: nil // size: len = 0x0 (8 bytes) // ] syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0ul, /*size=*/0ul); // close arguments: [ // fd: fd (resource) // ] inject_fault(1); syscall(__NR_close, /*fd=*/3); return 0; }