// https://syzkaller.appspot.com/bug?id=420f8605e450528dc59c2ac12ae7d114f6c248df // 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 #include #include #include #include #include #include #include #ifndef __NR_bpf #define __NR_bpf 321 #endif static unsigned long long procid; static __thread int clone_ongoing; static __thread int skip_segv; static __thread jmp_buf segv_env; static void segv_handler(int sig, siginfo_t* info, void* ctx) { if (__atomic_load_n(&clone_ongoing, __ATOMIC_RELAXED) != 0) { exit(sig); } uintptr_t addr = (uintptr_t)info->si_addr; const uintptr_t prog_start = 1 << 20; const uintptr_t prog_end = 100 << 20; int skip = __atomic_load_n(&skip_segv, __ATOMIC_RELAXED) != 0; int valid = addr < prog_start || addr > prog_end; if (skip && valid) { _longjmp(segv_env, 1); } exit(sig); } static void install_segv_handler(void) { struct sigaction sa; memset(&sa, 0, sizeof(sa)); sa.sa_handler = SIG_IGN; syscall(SYS_rt_sigaction, 0x20, &sa, NULL, 8); syscall(SYS_rt_sigaction, 0x21, &sa, NULL, 8); memset(&sa, 0, sizeof(sa)); sa.sa_sigaction = segv_handler; sa.sa_flags = SA_NODEFER | SA_SIGINFO; sigaction(SIGSEGV, &sa, NULL); sigaction(SIGBUS, &sa, NULL); } #define NONFAILING(...) \ ({ \ int ok = 1; \ __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST); \ if (_setjmp(segv_env) == 0) { \ __VA_ARGS__; \ } else \ ok = 0; \ __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); \ ok; \ }) 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; } static void use_temporary_dir(void) { char tmpdir_template[] = "./syzkaller.XXXXXX"; char* tmpdir = mkdtemp(tmpdir_template); if (!tmpdir) exit(1); if (chmod(tmpdir, 0777)) exit(1); if (chdir(tmpdir)) exit(1); } #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; } #define MAX_FDS 30 static void setup_gadgetfs(); static void setup_binderfs(); static void setup_fusectl(); static void sandbox_common_mount_tmpfs(void) { write_file("/proc/sys/fs/mount-max", "100000"); if (mkdir("./syz-tmp", 0777)) exit(1); if (mount("", "./syz-tmp", "tmpfs", 0, NULL)) exit(1); if (mkdir("./syz-tmp/newroot", 0777)) exit(1); if (mkdir("./syz-tmp/newroot/dev", 0700)) exit(1); unsigned bind_mount_flags = MS_BIND | MS_REC | MS_PRIVATE; if (mount("/dev", "./syz-tmp/newroot/dev", NULL, bind_mount_flags, NULL)) exit(1); if (mkdir("./syz-tmp/newroot/proc", 0700)) exit(1); if (mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL)) exit(1); if (mkdir("./syz-tmp/newroot/selinux", 0700)) exit(1); const char* selinux_path = "./syz-tmp/newroot/selinux"; if (mount("/selinux", selinux_path, NULL, bind_mount_flags, NULL)) { if (errno != ENOENT) exit(1); if (mount("/sys/fs/selinux", selinux_path, NULL, bind_mount_flags, NULL) && errno != ENOENT) exit(1); } if (mkdir("./syz-tmp/newroot/sys", 0700)) exit(1); if (mount("/sys", "./syz-tmp/newroot/sys", 0, bind_mount_flags, NULL)) exit(1); if (mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, bind_mount_flags, NULL) && errno != ENOENT) exit(1); if (mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL, bind_mount_flags, NULL) && errno != ENOENT) exit(1); if (mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, bind_mount_flags, NULL) && errno != ENOENT) exit(1); if (mkdir("./syz-tmp/newroot/syz-inputs", 0700)) exit(1); if (mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL, bind_mount_flags | MS_RDONLY, NULL) && errno != ENOENT) exit(1); if (mkdir("./syz-tmp/pivot", 0777)) exit(1); if (syscall(SYS_pivot_root, "./syz-tmp", "./syz-tmp/pivot")) { if (chdir("./syz-tmp")) exit(1); } else { if (chdir("/")) exit(1); if (umount2("./pivot", MNT_DETACH)) exit(1); } if (chroot("./newroot")) exit(1); if (chdir("/")) exit(1); setup_gadgetfs(); setup_binderfs(); setup_fusectl(); } static void setup_gadgetfs() { if (mkdir("/dev/gadgetfs", 0777)) { } if (mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL)) { } } static void setup_fusectl() { if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) { } } static void setup_binderfs() { if (mkdir("/dev/binderfs", 0777)) { } if (mount("binder", "/dev/binderfs", "binder", 0, NULL)) { } } static void loop(); static void sandbox_common() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); if (getppid() == 1) exit(1); struct rlimit rlim; rlim.rlim_cur = rlim.rlim_max = (200 << 20); setrlimit(RLIMIT_AS, &rlim); rlim.rlim_cur = rlim.rlim_max = 32 << 20; setrlimit(RLIMIT_MEMLOCK, &rlim); rlim.rlim_cur = rlim.rlim_max = 136 << 20; setrlimit(RLIMIT_FSIZE, &rlim); rlim.rlim_cur = rlim.rlim_max = 1 << 20; setrlimit(RLIMIT_STACK, &rlim); rlim.rlim_cur = rlim.rlim_max = 128 << 20; setrlimit(RLIMIT_CORE, &rlim); rlim.rlim_cur = rlim.rlim_max = 256; setrlimit(RLIMIT_NOFILE, &rlim); if (unshare(CLONE_NEWNS)) { } if (mount(NULL, "/", NULL, MS_REC | MS_PRIVATE, NULL)) { } if (unshare(CLONE_NEWIPC)) { } if (unshare(0x02000000)) { } if (unshare(CLONE_NEWUTS)) { } if (unshare(CLONE_SYSVSEM)) { } typedef struct { const char* name; const char* value; } sysctl_t; static const sysctl_t sysctls[] = { {"/proc/sys/kernel/shmmax", "16777216"}, {"/proc/sys/kernel/shmall", "536870912"}, {"/proc/sys/kernel/shmmni", "1024"}, {"/proc/sys/kernel/msgmax", "8192"}, {"/proc/sys/kernel/msgmni", "1024"}, {"/proc/sys/kernel/msgmnb", "1024"}, {"/proc/sys/kernel/sem", "1024 1048576 500 1024"}, }; unsigned i; for (i = 0; i < sizeof(sysctls) / sizeof(sysctls[0]); i++) write_file(sysctls[i].name, sysctls[i].value); } static int wait_for_loop(int pid) { if (pid < 0) exit(1); int status = 0; while (waitpid(-1, &status, __WALL) != pid) { } return WEXITSTATUS(status); } static void drop_caps(void) { struct __user_cap_header_struct cap_hdr = {}; struct __user_cap_data_struct cap_data[2] = {}; cap_hdr.version = _LINUX_CAPABILITY_VERSION_3; cap_hdr.pid = getpid(); if (syscall(SYS_capget, &cap_hdr, &cap_data)) exit(1); const int drop = (1 << CAP_SYS_PTRACE) | (1 << CAP_SYS_NICE); cap_data[0].effective &= ~drop; cap_data[0].permitted &= ~drop; cap_data[0].inheritable &= ~drop; if (syscall(SYS_capset, &cap_hdr, &cap_data)) exit(1); } static int do_sandbox_none(void) { if (unshare(CLONE_NEWPID)) { } int pid = fork(); if (pid != 0) return wait_for_loop(pid); sandbox_common(); drop_caps(); if (unshare(CLONE_NEWNET)) { } write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535"); sandbox_common_mount_tmpfs(); loop(); exit(1); } #define FS_IOC_SETFLAGS _IOW('f', 2, long) static void remove_dir(const char* dir) { int iter = 0; DIR* dp = 0; const int umount_flags = MNT_FORCE | UMOUNT_NOFOLLOW; retry: while (umount2(dir, umount_flags) == 0) { } dp = opendir(dir); if (dp == NULL) { if (errno == EMFILE) { exit(1); } exit(1); } struct dirent* ep = 0; while ((ep = readdir(dp))) { if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0) continue; char filename[FILENAME_MAX]; snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name); while (umount2(filename, umount_flags) == 0) { } struct stat st; if (lstat(filename, &st)) exit(1); if (S_ISDIR(st.st_mode)) { remove_dir(filename); continue; } int i; for (i = 0;; i++) { if (unlink(filename) == 0) break; if (errno == EPERM) { int fd = open(filename, O_RDONLY); if (fd != -1) { long flags = 0; if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) { } close(fd); continue; } } if (errno == EROFS) { break; } if (errno != EBUSY || i > 100) exit(1); if (umount2(filename, umount_flags)) exit(1); } } closedir(dp); for (int i = 0;; i++) { if (rmdir(dir) == 0) break; if (i < 100) { if (errno == EPERM) { int fd = open(dir, O_RDONLY); if (fd != -1) { long flags = 0; if (ioctl(fd, FS_IOC_SETFLAGS, &flags) == 0) { } close(fd); continue; } } if (errno == EROFS) { break; } if (errno == EBUSY) { if (umount2(dir, umount_flags)) exit(1); continue; } if (errno == ENOTEMPTY) { if (iter < 100) { iter++; goto retry; } } } exit(1); } } 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 void kill_and_wait(int pid, int* status) { kill(-pid, SIGKILL); kill(pid, SIGKILL); for (int 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"); if (symlink("/dev/binderfs", "./binderfs")) { } } static void close_fds() { for (int fd = 3; fd < MAX_FDS; fd++) close(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; } static const char* setup_binfmt_misc() { if (mount(0, "/proc/sys/fs/binfmt_misc", "binfmt_misc", 0, 0) && errno != EBUSY) { return NULL; } if (!write_file("/proc/sys/fs/binfmt_misc/register", ":syz0:M:0:\x01::./file0:") || !write_file("/proc/sys/fs/binfmt_misc/register", ":syz1:M:1:\x02::./file0:POC")) return "write(/proc/sys/fs/binfmt_misc/register) failed"; return NULL; } static void setup_sysctl() { int cad_pid = fork(); if (cad_pid < 0) exit(1); if (cad_pid == 0) { for (;;) sleep(100); } char tmppid[32]; snprintf(tmppid, sizeof(tmppid), "%d", cad_pid); struct { const char* name; const char* data; } files[] = { {"/sys/kernel/debug/x86/nmi_longest_ns", "10000000000"}, {"/proc/sys/kernel/hung_task_check_interval_secs", "20"}, {"/proc/sys/net/core/bpf_jit_kallsyms", "1"}, {"/proc/sys/net/core/bpf_jit_harden", "0"}, {"/proc/sys/kernel/kptr_restrict", "0"}, {"/proc/sys/kernel/softlockup_all_cpu_backtrace", "1"}, {"/proc/sys/fs/mount-max", "100"}, {"/proc/sys/vm/oom_dump_tasks", "0"}, {"/proc/sys/debug/exception-trace", "0"}, {"/proc/sys/kernel/printk", "7 4 1 3"}, {"/proc/sys/kernel/keys/gc_delay", "1"}, {"/proc/sys/vm/oom_kill_allocating_task", "1"}, {"/proc/sys/kernel/ctrl-alt-del", "0"}, {"/proc/sys/kernel/cad_pid", tmppid}, }; for (size_t i = 0; i < sizeof(files) / sizeof(files[0]); i++) { if (!write_file(files[i].name, files[i].data)) { } } kill(cad_pid, SIGKILL); while (waitpid(cad_pid, NULL, 0) != cad_pid) ; } static void execute_one(void); #define WAIT_FLAGS __WALL static void loop(void) { int iter = 0; for (;; iter++) { char cwdbuf[32]; sprintf(cwdbuf, "./%d", iter); if (mkdir(cwdbuf, 0777)) exit(1); int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { if (chdir(cwdbuf)) exit(1); setup_test(); execute_one(); close_fds(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } remove_dir(cwdbuf); } } uint64_t r[5] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { 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[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 = 0x7 (4 bytes) // ksize: int32 = 0x4 (4 bytes) // vsize: int32 = 0x80 (4 bytes) // max: int32 = 0x1 (4 bytes) // flags: map_flags = 0x28 (4 bytes) // inner: fd_bpf_map (resource) // node: int32 = 0x0 (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 NONFAILING(*(uint32_t*)0x200000000280 = 7); NONFAILING(*(uint32_t*)0x200000000284 = 4); NONFAILING(*(uint32_t*)0x200000000288 = 0x80); NONFAILING(*(uint32_t*)0x20000000028c = 1); NONFAILING(*(uint32_t*)0x200000000290 = 0x28); NONFAILING(*(uint32_t*)0x200000000294 = -1); NONFAILING(*(uint32_t*)0x200000000298 = 0); NONFAILING(memset((void*)0x20000000029c, 0, 16)); NONFAILING(*(uint32_t*)0x2000000002ac = 0); NONFAILING(*(uint32_t*)0x2000000002b0 = -1); NONFAILING(*(uint32_t*)0x2000000002b4 = 0); NONFAILING(*(uint32_t*)0x2000000002b8 = 0); NONFAILING(*(uint32_t*)0x2000000002bc = 0); NONFAILING(*(uint64_t*)0x2000000002c0 = 0); NONFAILING(*(uint32_t*)0x2000000002c8 = 0); NONFAILING(*(uint32_t*)0x2000000002cc = 0); syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x200000000280ul, /*size=*/0x50ul); // bpf$MAP_CREATE arguments: [ // cmd: const = 0x0 (8 bytes) // arg: ptr[inout, array[ANYUNION]] { // array[ANYUNION] { // union ANYUNION { // ANYBLOB: buffer: {1b 00 00 00 00 00 00 00 00 00 00 00 00 80} // (length 0xe) // } // } // } // size: len = 0x48 (8 bytes) // ] // returns fd_bpf_map NONFAILING(memcpy((void*)0x2000000007c0, "\x1b\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80", 14)); res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x2000000007c0ul, /*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 = 0x6 (4 bytes) // ninsn: bytesize8 = 0x8 (4 bytes) // insns: ptr[inout, array[ANYUNION]] { // array[ANYUNION] { // union ANYUNION { // ANYBLOB: buffer: {18 02 00 00 fc 06 00 00 00 00 00 00 00 00 00 // 00 85 00 00 00 41 00 00 00 18 11 00 00} (length 0x1c) // } // union ANYUNION { // ANYRES32: ANYRES32 (resource) // } // union ANYUNION { // ANYBLOB: buffer: {00 00 00 00 00 00 00 00 b7 02 00 00 00 00 00 // 00 85 00 00 00 86 00 00 00 95} (length 0x19) // } // } // } // license: ptr[in, buffer] { // buffer: {73 79 7a 6b 61 6c 6c 65 72 00} (length 0xa) // } // 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 { // xdp: xdp_attach_types = 0x0 (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 = 0x10 (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 NONFAILING(*(uint32_t*)0x200000000700 = 6); NONFAILING(*(uint32_t*)0x200000000704 = 8); NONFAILING(*(uint64_t*)0x200000000708 = 0x2000000002c0); NONFAILING(memcpy((void*)0x2000000002c0, "\x18\x02\x00\x00\xfc\x06\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x85\x00\x00\x00\x41\x00\x00\x00\x18\x11\x00\x00", 28)); NONFAILING(*(uint32_t*)0x2000000002dc = r[0]); NONFAILING(memcpy((void*)0x2000000002e0, "\x00\x00\x00\x00\x00\x00\x00\x00\xb7\x02\x00\x00\x00\x00" "\x00\x00\x85\x00\x00\x00\x86\x00\x00\x00\x95", 25)); NONFAILING(*(uint64_t*)0x200000000710 = 0x200000000280); NONFAILING(memcpy((void*)0x200000000280, "syzkaller\000", 10)); NONFAILING(*(uint32_t*)0x200000000718 = 0); NONFAILING(*(uint32_t*)0x20000000071c = 0); NONFAILING(*(uint64_t*)0x200000000720 = 0); NONFAILING(*(uint32_t*)0x200000000728 = 0); NONFAILING(*(uint32_t*)0x20000000072c = 0); NONFAILING(memset((void*)0x200000000730, 0, 16)); NONFAILING(*(uint32_t*)0x200000000740 = 0); NONFAILING(*(uint32_t*)0x200000000744 = 0); NONFAILING(*(uint32_t*)0x200000000748 = -1); NONFAILING(*(uint32_t*)0x20000000074c = 0); NONFAILING(*(uint64_t*)0x200000000750 = 0); NONFAILING(*(uint32_t*)0x200000000758 = 0); NONFAILING(*(uint32_t*)0x20000000075c = 0); NONFAILING(*(uint64_t*)0x200000000760 = 0); NONFAILING(*(uint32_t*)0x200000000768 = 0); NONFAILING(*(uint32_t*)0x20000000076c = 0); NONFAILING(*(uint32_t*)0x200000000770 = 0); NONFAILING(*(uint32_t*)0x200000000774 = 0); NONFAILING(*(uint64_t*)0x200000000778 = 0); NONFAILING(*(uint64_t*)0x200000000780 = 0); NONFAILING(*(uint32_t*)0x200000000788 = 0x10); NONFAILING(*(uint32_t*)0x20000000078c = 0); NONFAILING(*(uint32_t*)0x200000000790 = 0); res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000700ul, /*size=*/0x94ul); if (res != -1) r[1] = res; // bpf$BPF_PROG_TEST_RUN arguments: [ // cmd: const = 0xa (8 bytes) // arg: ptr[in, bpf_test_prog_arg] { // bpf_test_prog_arg { // prog: fd_bpf_prog (resource) // retval: const = 0x0 (4 bytes) // insizedata: len = 0xe (4 bytes) // outsizedata: len = 0x0 (4 bytes) // indata: ptr[in, buffer] { // buffer: {74 db af 16 51 10 4d fb 47 3d 98 43 ae 7b} (length 0xe) // } // outdata: nil // repeat: int32 = 0x500 (4 bytes) // dur: const = 0x0 (4 bytes) // insizectx: len = 0x0 (4 bytes) // outsizectx: len = 0x0 (4 bytes) // inctx: nil // outctx: nil // flags: bpf_prog_test_run_flags = 0x0 (4 bytes) // cpu: const = 0x9 (4 bytes) // batch_size: int32 = 0x0 (4 bytes) // pad = 0x0 (4 bytes) // } // } // size: len = 0x50 (8 bytes) // ] NONFAILING(*(uint32_t*)0x200000000600 = r[1]); NONFAILING(*(uint32_t*)0x200000000604 = 0); NONFAILING(*(uint32_t*)0x200000000608 = 0xe); NONFAILING(*(uint32_t*)0x20000000060c = 0); NONFAILING(*(uint64_t*)0x200000000610 = 0x2000000000c0); NONFAILING(memcpy((void*)0x2000000000c0, "\x74\xdb\xaf\x16\x51\x10\x4d\xfb\x47\x3d\x98\x43\xae\x7b", 14)); NONFAILING(*(uint64_t*)0x200000000618 = 0); NONFAILING(*(uint32_t*)0x200000000620 = 0x500); NONFAILING(*(uint32_t*)0x200000000624 = 0); NONFAILING(*(uint32_t*)0x200000000628 = 0); NONFAILING(*(uint32_t*)0x20000000062c = 0); NONFAILING(*(uint64_t*)0x200000000630 = 0); NONFAILING(*(uint64_t*)0x200000000638 = 0); NONFAILING(*(uint32_t*)0x200000000640 = 0); NONFAILING(*(uint32_t*)0x200000000644 = 9); NONFAILING(*(uint32_t*)0x200000000648 = 0); syscall(__NR_bpf, /*cmd=*/0xaul, /*arg=*/0x200000000600ul, /*size=*/0x50ul); // bpf$BPF_RAW_TRACEPOINT_OPEN arguments: [ // cmd: const = 0x11 (8 bytes) // arg: nil // size: len = 0x0 (8 bytes) // ] // returns fd_perf_base syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0ul, /*size=*/0ul); // perf_event_open arguments: [ // attr: nil // pid: pid (resource) // cpu: intptr = 0x0 (8 bytes) // group: fd_perf (resource) // flags: perf_flags = 0x0 (8 bytes) // ] // returns fd_perf syscall(__NR_perf_event_open, /*attr=*/0ul, /*pid=*/0, /*cpu=*/0ul, /*group=*/(intptr_t)-1, /*flags=*/0ul); // bpf$BPF_RAW_TRACEPOINT_OPEN arguments: [ // cmd: const = 0x11 (8 bytes) // arg: nil // size: len = 0x0 (8 bytes) // ] // returns fd_perf_base syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0ul, /*size=*/0ul); // perf_event_open arguments: [ // attr: ptr[in, perf_event_attr] { // perf_event_attr { // type: perf_event_type = 0x1 (4 bytes) // size: len = 0x80 (4 bytes) // config0: int8 = 0x0 (1 bytes) // config1: int8 = 0x0 (1 bytes) // config2: int8 = 0x0 (1 bytes) // config3: int8 = 0x0 (1 bytes) // config4: const = 0x0 (4 bytes) // sample_freq: int64 = 0x210 (8 bytes) // sample_type: perf_sample_type = 0x20 (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 = 0x0 (4 bytes) // bp_type: perf_bp_type = 0x0 (4 bytes) // bp_config: union perf_bp_config { // perf_bp: perf_bp { // bp_addr: nil // bp_len: perf_bp_lens = 0x2 (8 bytes) // } // } // branch_sample_type: perf_branch_sample_type = 0x0 (8 bytes) // sample_regs_user: int64 = 0x0 (8 bytes) // sample_stack_user: int32 = 0x8 (4 bytes) // clockid: clock_type = 0x0 (4 bytes) // sample_regs_intr: int64 = 0x58c4 (8 bytes) // aux_watermark: int32 = 0x0 (4 bytes) // sample_max_stack: int16 = 0x0 (2 bytes) // __reserved_2: const = 0x0 (2 bytes) // aux_sample_size: int32 = 0x0 (4 bytes) // __reserved_3: const = 0x0 (4 bytes) // sig_data: int64 = 0x0 (8 bytes) // } // } // pid: pid (resource) // cpu: intptr = 0xffffffffffffffff (8 bytes) // group: fd_perf (resource) // flags: perf_flags = 0x0 (8 bytes) // ] // returns fd_perf NONFAILING(*(uint32_t*)0x200000000100 = 1); NONFAILING(*(uint32_t*)0x200000000104 = 0x80); NONFAILING(*(uint8_t*)0x200000000108 = 0); NONFAILING(*(uint8_t*)0x200000000109 = 0); NONFAILING(*(uint8_t*)0x20000000010a = 0); NONFAILING(*(uint8_t*)0x20000000010b = 0); NONFAILING(*(uint32_t*)0x20000000010c = 0); NONFAILING(*(uint64_t*)0x200000000110 = 0x210); NONFAILING(*(uint64_t*)0x200000000118 = 0x20); NONFAILING(*(uint64_t*)0x200000000120 = 0); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 0, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 1, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 2, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 4, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 5, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 6, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 7, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 8, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 9, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 10, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 11, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 12, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 13, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 14, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 15, 2)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 17, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 18, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 19, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 20, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 21, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 22, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 23, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 24, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 25, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 26, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 27, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 28, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 29, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 30, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 31, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 32, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 33, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 34, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 35, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 36, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 37, 1)); NONFAILING(STORE_BY_BITMASK(uint64_t, , 0x200000000128, 0, 38, 26)); NONFAILING(*(uint32_t*)0x200000000130 = 0); NONFAILING(*(uint32_t*)0x200000000134 = 0); NONFAILING(*(uint64_t*)0x200000000138 = 0); NONFAILING(*(uint64_t*)0x200000000140 = 2); NONFAILING(*(uint64_t*)0x200000000148 = 0); NONFAILING(*(uint64_t*)0x200000000150 = 0); NONFAILING(*(uint32_t*)0x200000000158 = 8); NONFAILING(*(uint32_t*)0x20000000015c = 0); NONFAILING(*(uint64_t*)0x200000000160 = 0x58c4); NONFAILING(*(uint32_t*)0x200000000168 = 0); NONFAILING(*(uint16_t*)0x20000000016c = 0); NONFAILING(*(uint16_t*)0x20000000016e = 0); NONFAILING(*(uint32_t*)0x200000000170 = 0); NONFAILING(*(uint32_t*)0x200000000174 = 0); NONFAILING(*(uint64_t*)0x200000000178 = 0); syscall(__NR_perf_event_open, /*attr=*/0x200000000100ul, /*pid=*/0, /*cpu=*/(intptr_t)-1, /*group=*/(intptr_t)-1, /*flags=*/0ul); // bpf$PROG_LOAD arguments: [ // cmd: const = 0x5 (8 bytes) // arg: nil // size: len = 0x0 (8 bytes) // ] // returns fd_bpf_prog syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0ul, /*size=*/0ul); // bpf$BPF_RAW_TRACEPOINT_OPEN arguments: [ // cmd: const = 0x11 (8 bytes) // arg: ptr[in, bpf_raw_tracepoint] { // bpf_raw_tracepoint { // name: nil // prog_fd: fd_bpf_prog_raw_tracepoint (resource) // pad: const = 0x0 (4 bytes) // cookie: int64 = 0x0 (8 bytes) // } // } // size: len = 0x18 (8 bytes) // ] // returns fd_perf_base NONFAILING(*(uint64_t*)0x200000000080 = 0); NONFAILING(*(uint32_t*)0x200000000088 = -1); NONFAILING(*(uint32_t*)0x20000000008c = 0); NONFAILING(*(uint64_t*)0x200000000090 = 0); syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x200000000080ul, /*size=*/0x18ul); // bpf$MAP_CREATE arguments: [ // cmd: const = 0x0 (8 bytes) // arg: ptr[inout, array[ANYUNION]] { // array[ANYUNION] { // union ANYUNION { // ANYBLOB: buffer: {09 00 00 00 07 00 00 00 2a 00 00 00 05} (length // 0xd) // } // } // } // size: len = 0x50 (8 bytes) // ] // returns fd_bpf_map NONFAILING(memcpy((void*)0x2000000009c0, "\x09\x00\x00\x00\x07\x00\x00\x00\x2a\x00\x00\x00\x05", 13)); res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x2000000009c0ul, /*size=*/0x50ul); if (res != -1) r[2] = res; // bpf$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 = 0x11 (4 bytes) // ninsn: bytesize8 = 0xc (4 bytes) // insns: ptr[inout, array[ANYUNION]] { // array[ANYUNION] { // union ANYUNION { // ANYBLOB: buffer: {18 00 00 00 01 07 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 00 // 00 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 01 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 = 0x0 (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 NONFAILING(*(uint32_t*)0x200000000540 = 0x11); NONFAILING(*(uint32_t*)0x200000000544 = 0xc); NONFAILING(*(uint64_t*)0x200000000548 = 0x200000000440); NONFAILING(memcpy((void*)0x200000000440, "\x18\x00\x00\x00\x01\x07\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x18\x11\x00\x00", 20)); NONFAILING(*(uint32_t*)0x200000000454 = r[2]); NONFAILING(memcpy( (void*)0x200000000458, "\x00\x00\x00\x00\x00\x00\x00\x00\xb7\x08\x00\x00\x00\x00\x00\x00\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\x01\x00\x00\x00\x95", 65)); NONFAILING(*(uint64_t*)0x200000000550 = 0); NONFAILING(*(uint32_t*)0x200000000558 = 0); NONFAILING(*(uint32_t*)0x20000000055c = 0); NONFAILING(*(uint64_t*)0x200000000560 = 0); NONFAILING(*(uint32_t*)0x200000000568 = 0); NONFAILING(*(uint32_t*)0x20000000056c = 0); NONFAILING(memset((void*)0x200000000570, 0, 16)); NONFAILING(*(uint32_t*)0x200000000580 = 0); NONFAILING(*(uint32_t*)0x200000000584 = 0); NONFAILING(*(uint32_t*)0x200000000588 = -1); NONFAILING(*(uint32_t*)0x20000000058c = 0); NONFAILING(*(uint64_t*)0x200000000590 = 0); NONFAILING(*(uint32_t*)0x200000000598 = 0); NONFAILING(*(uint32_t*)0x20000000059c = 0); NONFAILING(*(uint64_t*)0x2000000005a0 = 0); NONFAILING(*(uint32_t*)0x2000000005a8 = 0); NONFAILING(*(uint32_t*)0x2000000005ac = 0); NONFAILING(*(uint32_t*)0x2000000005b0 = 0); NONFAILING(*(uint32_t*)0x2000000005b4 = 0); NONFAILING(*(uint64_t*)0x2000000005b8 = 0); NONFAILING(*(uint64_t*)0x2000000005c0 = 0); NONFAILING(*(uint32_t*)0x2000000005c8 = 0); NONFAILING(*(uint32_t*)0x2000000005cc = 0); NONFAILING(*(uint32_t*)0x2000000005d0 = 0); syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000000540ul, /*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 = 0x11 (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 = 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 = 0x33 (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 NONFAILING(*(uint32_t*)0x2000000002c0 = 0x11); NONFAILING(*(uint32_t*)0x2000000002c4 = 0xc); NONFAILING(*(uint64_t*)0x2000000002c8 = 0x200000000440); NONFAILING(*(uint64_t*)0x2000000002d0 = 0x200000000240); NONFAILING(memcpy((void*)0x200000000240, "GPL\000", 4)); NONFAILING(*(uint32_t*)0x2000000002d8 = 0); NONFAILING(*(uint32_t*)0x2000000002dc = 0); NONFAILING(*(uint64_t*)0x2000000002e0 = 0); NONFAILING(*(uint32_t*)0x2000000002e8 = 0); NONFAILING(*(uint32_t*)0x2000000002ec = 0); NONFAILING(memset((void*)0x2000000002f0, 0, 16)); NONFAILING(*(uint32_t*)0x200000000300 = 0); NONFAILING(*(uint32_t*)0x200000000304 = 0x33); NONFAILING(*(uint32_t*)0x200000000308 = -1); NONFAILING(*(uint32_t*)0x20000000030c = 0); NONFAILING(*(uint64_t*)0x200000000310 = 0); NONFAILING(*(uint32_t*)0x200000000318 = 0); NONFAILING(*(uint32_t*)0x20000000031c = 0); NONFAILING(*(uint64_t*)0x200000000320 = 0); NONFAILING(*(uint32_t*)0x200000000328 = 0); NONFAILING(*(uint32_t*)0x20000000032c = 0); NONFAILING(*(uint32_t*)0x200000000330 = 0); NONFAILING(*(uint32_t*)0x200000000334 = 0); NONFAILING(*(uint64_t*)0x200000000338 = 0); NONFAILING(*(uint64_t*)0x200000000340 = 0); NONFAILING(*(uint32_t*)0x200000000348 = 0); NONFAILING(*(uint32_t*)0x20000000034c = 0); NONFAILING(*(uint32_t*)0x200000000350 = 0); res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x2000000002c0ul, /*size=*/0x94ul); if (res != -1) r[3] = res; // bpf$BPF_RAW_TRACEPOINT_OPEN arguments: [ // cmd: const = 0x11 (8 bytes) // arg: ptr[in, bpf_raw_tracepoint] { // bpf_raw_tracepoint { // name: ptr[in, buffer] { // buffer: {6e 65 69 67 68 5f 75 70 64 61 74 65 00} (length 0xd) // } // prog_fd: fd_bpf_prog_raw_tracepoint (resource) // pad: const = 0x0 (4 bytes) // cookie: int64 = 0x0 (8 bytes) // } // } // size: len = 0x10 (8 bytes) // ] // returns fd_perf_base NONFAILING(*(uint64_t*)0x200000000240 = 0x200000000380); NONFAILING(memcpy((void*)0x200000000380, "neigh_update\000", 13)); NONFAILING(*(uint32_t*)0x200000000248 = r[3]); NONFAILING(*(uint32_t*)0x20000000024c = 0); NONFAILING(*(uint64_t*)0x200000000250 = 0); res = syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x200000000240ul, /*size=*/0x10ul); if (res != -1) r[4] = res; // bpf$BPF_RAW_TRACEPOINT_OPEN arguments: [ // cmd: const = 0x11 (8 bytes) // arg: nil // size: len = 0x0 (8 bytes) // ] // returns fd_perf_base syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0ul, /*size=*/0ul); // close arguments: [ // fd: fd (resource) // ] inject_fault(1); syscall(__NR_close, /*fd=*/r[4]); } 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); setup_sysctl(); const char* reason; (void)reason; if ((reason = setup_binfmt_misc())) printf("the reproducer may not work as expected: binfmt_misc setup failed: " "%s\n", reason); if ((reason = setup_fault())) printf("the reproducer may not work as expected: fault injection setup " "failed: %s\n", reason); install_segv_handler(); for (procid = 0; procid < 5; procid++) { if (fork() == 0) { use_temporary_dir(); do_sandbox_none(); } } sleep(1000000); return 0; }