// https://syzkaller.appspot.com/bug?id=d863a0206275fa8301bd85df7c4216b8ab699f02 // 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 __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 long syz_open_procfs(volatile long a0, volatile long a1) { char buf[128]; memset(buf, 0, sizeof(buf)); if (a0 == 0) { snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1); } else if (a0 == -1) { snprintf(buf, sizeof(buf), "/proc/thread-self/%s", (char*)a1); } else { snprintf(buf, sizeof(buf), "/proc/self/task/%d/%s", (int)a0, (char*)a1); } int fd = open(buf, O_RDWR); if (fd == -1) fd = open(buf, O_RDONLY); return fd; } 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 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_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)) { } // perf_event_open arguments: [ // attr: ptr[in, perf_event_attr] { // perf_event_attr { // type: perf_event_type = 0x5 (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 = 0x5 (8 bytes) // sample_type: perf_sample_type = 0x0 (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 = 0x3 (4 bytes) // bp_config: union perf_bp_config { // perf_bp: perf_bp { // bp_addr: ptr[out, int8] { // int8 = 0x0 (1 bytes) // } // bp_len: perf_bp_lens = 0x4 (8 bytes) // } // } // branch_sample_type: perf_branch_sample_type = 0x4044 (8 bytes) // sample_regs_user: int64 = 0x0 (8 bytes) // sample_stack_user: int32 = 0x0 (4 bytes) // clockid: clock_type = 0x0 (4 bytes) // sample_regs_intr: int64 = 0x0 (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 = 0xb (8 bytes) // ] // returns fd_perf NONFAILING(*(uint32_t*)0x200000000100 = 5); 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 = 5); NONFAILING(*(uint64_t*)0x200000000118 = 0); 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 = 3); NONFAILING(*(uint64_t*)0x200000000138 = 0x200000000300); NONFAILING(*(uint64_t*)0x200000000140 = 4); NONFAILING(*(uint64_t*)0x200000000148 = 0x4044); NONFAILING(*(uint64_t*)0x200000000150 = 0); NONFAILING(*(uint32_t*)0x200000000158 = 0); NONFAILING(*(uint32_t*)0x20000000015c = 0); NONFAILING(*(uint64_t*)0x200000000160 = 0); 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); res = syscall( __NR_perf_event_open, /*attr=*/0x200000000100ul, /*pid=*/0, /*cpu=*/(intptr_t)-1, /*group=*/(intptr_t)-1, /*flags=PERF_FLAG_FD_CLOEXEC|PERF_FLAG_FD_OUTPUT|PERF_FLAG_FD_NO_GROUP*/ 0xbul); if (res != -1) r[0] = res; // bpf$MAP_CREATE arguments: [ // cmd: const = 0x0 (8 bytes) // arg: ptr[inout, array[ANYUNION]] { // array[ANYUNION] { // union ANYUNION { // ANYBLOB: buffer: {05 00 00 00 05 00 00 00 49 43 00 00 05} (length // 0xd) // } // } // } // size: len = 0x50 (8 bytes) // ] // returns fd_bpf_map NONFAILING(memcpy((void*)0x2000000009c0, "\x05\x00\x00\x00\x05\x00\x00\x00\x49\x43\x00\x00\x05", 13)); res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x2000000009c0ul, /*size=*/0x50ul); if (res != -1) r[1] = res; // bpf$PROG_LOAD arguments: [ // cmd: const = 0x5 (8 bytes) // arg: nil // size: len = 0x0 (8 bytes) // ] // returns fd_bpf_prog res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0ul, /*size=*/0ul); if (res != -1) r[2] = res; // 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 = 0xb (4 bytes) // ksize: int32 = 0x8 (4 bytes) // vsize: int32 = 0xc (4 bytes) // max: int32 = 0x80000000 (4 bytes) // flags: map_flags = 0x1 (4 bytes) // inner: fd_bpf_map (resource) // node: int32 = 0x80 (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*)0x2000000000c0 = 0xb); NONFAILING(*(uint32_t*)0x2000000000c4 = 8); NONFAILING(*(uint32_t*)0x2000000000c8 = 0xc); NONFAILING(*(uint32_t*)0x2000000000cc = 0x80000000); NONFAILING(*(uint32_t*)0x2000000000d0 = 1); NONFAILING(*(uint32_t*)0x2000000000d4 = -1); NONFAILING(*(uint32_t*)0x2000000000d8 = 0x80); NONFAILING(memset((void*)0x2000000000dc, 0, 16)); NONFAILING(*(uint32_t*)0x2000000000ec = 0); NONFAILING(*(uint32_t*)0x2000000000f0 = -1); NONFAILING(*(uint32_t*)0x2000000000f4 = 0); NONFAILING(*(uint32_t*)0x2000000000f8 = 0); NONFAILING(*(uint32_t*)0x2000000000fc = 0); NONFAILING(*(uint64_t*)0x200000000100 = 0); NONFAILING(*(uint32_t*)0x200000000108 = 0); NONFAILING(*(uint32_t*)0x20000000010c = 0); res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x2000000000c0ul, /*size=*/0x50ul); if (res != -1) r[3] = res; // bpf$MAP_UPDATE_BATCH arguments: [ // cmd: const = 0x1a (8 bytes) // arg: nil // size: len = 0x0 (8 bytes) // ] syscall(__NR_bpf, /*cmd=*/0x1aul, /*arg=*/0ul, /*size=*/0ul); // 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 = 0x0 (4 bytes) // ninsn: bytesize8 = 0xc (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 = 0x0 (4 bytes) // code2: const = 0x0 (1 bytes) // regs2: const = 0x0 (1 bytes) // off2: const = 0x0 (2 bytes) // imm2: int32 = 0x0 (4 bytes) // } // body: array[bpf_insn] { // union bpf_insn { // ringbuf_output: bpf_insn_ringbuf_output { // insn1: bpf_insn_map_fd_t[const[BPF_REG_1, int8:4], // tail_call_map] { // code: const = 0x18 (1 bytes) // dst: const = 0x1 (0 bytes) // src: const = 0x1 (1 bytes) // off: const = 0x0 (2 bytes) // imm: tail_call_map (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_8, int8:4], const[0, int8:4], const[0, // int16], int32] { // code_class: int8 = 0x7 (0 bytes) // code_s: int8 = 0x0 (0 bytes) // code_op: int8 = 0xb (1 bytes) // dst: const = 0x8 (0 bytes) // src: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // imm: int32 = 0x2 (4 bytes) // } // insn3: bpf_insn_ldst_t[BPF_STX, BPF_DW0, BPF_MEM0, // const[BPF_REG_10, int8:4], const[BPF_REG_8, int8:4], // const[-8, int16], const[0, int32]] { // code_class: int8 = 0x3 (0 bytes) // code_size: int8 = 0x3 (0 bytes) // code_mode: int8 = 0x3 (1 bytes) // dst: const = 0xa (0 bytes) // src: const = 0x8 (1 bytes) // off: const = 0xfff8 (2 bytes) // imm: const = 0x0 (4 bytes) // } // insn4: bpf_insn_alu_t[BPF_ALU64, BPF_X0, BPF_MOV0, // const[BPF_REG_2, int8:4], const[BPF_REG_10, 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 = 0x2 (0 bytes) // src: const = 0xa (1 bytes) // off: const = 0x0 (2 bytes) // imm: const = 0x0 (4 bytes) // } // insn5: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_ADD0, // const[BPF_REG_2, int8:4], const[0, int8:4], const[0, // int16], const[-8, int32]] { // code_class: int8 = 0x7 (0 bytes) // code_s: int8 = 0x0 (0 bytes) // code_op: int8 = 0x0 (1 bytes) // dst: const = 0x2 (0 bytes) // src: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // imm: const = 0xfffffff8 (4 bytes) // } // insn6: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_MOV0, // const[BPF_REG_3, int8:4], const[0, int8:4], const[0, // int16], const[8, 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 = 0x8 (4 bytes) // } // insn7: bpf_insn_alu_t[BPF_ALU64, BPF_K0, BPF_MOV0, // const[BPF_REG_4, 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 = 0x4 (0 bytes) // src: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // imm: bpf_ringbuf_wakeup_flags = 0x0 (4 bytes) // } // insn8: // bpf_insn_call_helper_t[const[BPF_FUNC_ringbuf_output, // int32]] { // code: const = 0x85 (1 bytes) // regs: const = 0x0 (1 bytes) // off: const = 0x0 (2 bytes) // func: const = 0x3 (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: 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 = 0x43 (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 = 0x38 (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*)0x2000000000c0 = 0); NONFAILING(*(uint32_t*)0x2000000000c4 = 0xc); NONFAILING(*(uint64_t*)0x2000000000c8 = 0x200000000440); NONFAILING(*(uint8_t*)0x200000000440 = 0x18); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000441, 0, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000441, 0, 4, 4)); NONFAILING(*(uint16_t*)0x200000000442 = 0); NONFAILING(*(uint32_t*)0x200000000444 = 0); NONFAILING(*(uint8_t*)0x200000000448 = 0); NONFAILING(*(uint8_t*)0x200000000449 = 0); NONFAILING(*(uint16_t*)0x20000000044a = 0); NONFAILING(*(uint32_t*)0x20000000044c = 0); NONFAILING(*(uint8_t*)0x200000000450 = 0x18); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000451, 1, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000451, 1, 4, 4)); NONFAILING(*(uint16_t*)0x200000000452 = 0); NONFAILING(*(uint32_t*)0x200000000454 = r[3]); NONFAILING(*(uint8_t*)0x200000000458 = 0); NONFAILING(*(uint8_t*)0x200000000459 = 0); NONFAILING(*(uint16_t*)0x20000000045a = 0); NONFAILING(*(uint32_t*)0x20000000045c = 0); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000460, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000460, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000460, 0xb, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000461, 8, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000461, 0, 4, 4)); NONFAILING(*(uint16_t*)0x200000000462 = 0); NONFAILING(*(uint32_t*)0x200000000464 = 2); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000468, 3, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000468, 3, 3, 2)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000468, 3, 5, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000469, 0xa, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000469, 8, 4, 4)); NONFAILING(*(uint16_t*)0x20000000046a = 0xfff8); NONFAILING(*(uint32_t*)0x20000000046c = 0); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000470, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000470, 1, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000470, 0xb, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000471, 2, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000471, 0xa, 4, 4)); NONFAILING(*(uint16_t*)0x200000000472 = 0); NONFAILING(*(uint32_t*)0x200000000474 = 0); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000478, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000478, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000478, 0, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000479, 2, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000479, 0, 4, 4)); NONFAILING(*(uint16_t*)0x20000000047a = 0); NONFAILING(*(uint32_t*)0x20000000047c = 0xfffffff8); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000480, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000480, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000480, 0xb, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000481, 3, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000481, 0, 4, 4)); NONFAILING(*(uint16_t*)0x200000000482 = 0); NONFAILING(*(uint32_t*)0x200000000484 = 8); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000488, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000488, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000488, 0xb, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000489, 4, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x200000000489, 0, 4, 4)); NONFAILING(*(uint16_t*)0x20000000048a = 0); NONFAILING(*(uint32_t*)0x20000000048c = 0); NONFAILING(*(uint8_t*)0x200000000490 = 0x85); NONFAILING(*(uint8_t*)0x200000000491 = 0); NONFAILING(*(uint16_t*)0x200000000492 = 0); NONFAILING(*(uint32_t*)0x200000000494 = 3); NONFAILING(*(uint8_t*)0x200000000498 = 0x95); NONFAILING(*(uint8_t*)0x200000000499 = 0); NONFAILING(*(uint16_t*)0x20000000049a = 0); NONFAILING(*(uint32_t*)0x20000000049c = 0); NONFAILING(*(uint64_t*)0x2000000000d0 = 0); NONFAILING(*(uint32_t*)0x2000000000d8 = 0); NONFAILING(*(uint32_t*)0x2000000000dc = 0); NONFAILING(*(uint64_t*)0x2000000000e0 = 0); NONFAILING(*(uint32_t*)0x2000000000e8 = 0); NONFAILING(*(uint32_t*)0x2000000000ec = 0x43); NONFAILING(memset((void*)0x2000000000f0, 0, 16)); NONFAILING(*(uint32_t*)0x200000000100 = 0); NONFAILING(*(uint32_t*)0x200000000104 = 0x38); NONFAILING(*(uint32_t*)0x200000000108 = -1); NONFAILING(*(uint32_t*)0x20000000010c = 0); NONFAILING(*(uint64_t*)0x200000000110 = 0); NONFAILING(*(uint32_t*)0x200000000118 = 0); NONFAILING(*(uint32_t*)0x20000000011c = 0); NONFAILING(*(uint64_t*)0x200000000120 = 0); NONFAILING(*(uint32_t*)0x200000000128 = 0); NONFAILING(*(uint32_t*)0x20000000012c = 0); NONFAILING(*(uint32_t*)0x200000000130 = 0); NONFAILING(*(uint32_t*)0x200000000134 = 0); NONFAILING(*(uint64_t*)0x200000000138 = 0); NONFAILING(*(uint64_t*)0x200000000140 = 0); NONFAILING(*(uint32_t*)0x200000000148 = 0); NONFAILING(*(uint32_t*)0x20000000014c = 0); NONFAILING(*(uint32_t*)0x200000000150 = 0); syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x2000000000c0ul, /*size=*/0x94ul); // 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); // syz_open_procfs$namespace arguments: [ // pid: pid (resource) // file: nil // ] // returns fd_namespace NONFAILING(syz_open_procfs(/*pid=*/0, /*file=*/0x9999999999999999)); // bpf$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 = 0x7 (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 = 0x2 (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*)0x2000000005c0 = 7); NONFAILING(*(uint32_t*)0x2000000005c4 = 0xc); NONFAILING(*(uint64_t*)0x2000000005c8 = 0x200000000440); NONFAILING(*(uint64_t*)0x2000000005d0 = 0x200000000240); NONFAILING(memcpy((void*)0x200000000240, "GPL\000", 4)); NONFAILING(*(uint32_t*)0x2000000005d8 = 0); NONFAILING(*(uint32_t*)0x2000000005dc = 0); NONFAILING(*(uint64_t*)0x2000000005e0 = 0); NONFAILING(*(uint32_t*)0x2000000005e8 = 0); NONFAILING(*(uint32_t*)0x2000000005ec = 0); NONFAILING(memset((void*)0x2000000005f0, 0, 16)); NONFAILING(*(uint32_t*)0x200000000600 = 0); NONFAILING(*(uint32_t*)0x200000000604 = 2); NONFAILING(*(uint32_t*)0x200000000608 = -1); NONFAILING(*(uint32_t*)0x20000000060c = 0); NONFAILING(*(uint64_t*)0x200000000610 = 0); NONFAILING(*(uint32_t*)0x200000000618 = 0); NONFAILING(*(uint32_t*)0x20000000061c = 0); NONFAILING(*(uint64_t*)0x200000000620 = 0); NONFAILING(*(uint32_t*)0x200000000628 = 0); NONFAILING(*(uint32_t*)0x20000000062c = 0); NONFAILING(*(uint32_t*)0x200000000630 = 0); NONFAILING(*(uint32_t*)0x200000000634 = 0); NONFAILING(*(uint64_t*)0x200000000638 = 0); NONFAILING(*(uint64_t*)0x200000000640 = 0); NONFAILING(*(uint32_t*)0x200000000648 = 0); NONFAILING(*(uint32_t*)0x20000000064c = 0); NONFAILING(*(uint32_t*)0x200000000650 = 0); res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x2000000005c0ul, /*size=*/0x94ul); if (res != -1) r[4] = res; // ioctl$PERF_EVENT_IOC_SET_BPF arguments: [ // fd: fd_perf (resource) // cmd: const = 0x40042408 (4 bytes) // prog: fd_bpf_prog (resource) // ] syscall(__NR_ioctl, /*fd=*/r[0], /*cmd=*/0x40042408, /*prog=*/r[4]); // bpf$MAP_UPDATE_ELEM_TAIL_CALL arguments: [ // cmd: const = 0x2 (8 bytes) // arg: ptr[inout, bpf_map_update_tail_call_arg] { // bpf_map_update_tail_call_arg { // map: tail_call_map_update { // in: tail_call_map_fd (resource) // out: tail_call_map (resource) // } // pad = 0x0 (4 bytes) // key: ptr[in, const[0, const]] { // const = 0x0 (4 bytes) // } // val: ptr[in, fd_bpf_prog] { // fd_bpf_prog (resource) // } // flags: const = 0x0 (8 bytes) // } // } // size: len = 0x20 (8 bytes) // ] NONFAILING(*(uint32_t*)0x200000000200 = r[1]); NONFAILING(*(uint64_t*)0x200000000208 = 0x200000000180); NONFAILING(*(uint32_t*)0x200000000180 = 0); NONFAILING(*(uint64_t*)0x200000000210 = 0x2000000001c0); NONFAILING(*(uint32_t*)0x2000000001c0 = r[2]); NONFAILING(*(uint64_t*)0x200000000218 = 0); syscall(__NR_bpf, /*cmd=*/2ul, /*arg=*/0x200000000200ul, /*size=*/0x20ul); // bpf$MAP_UPDATE_ELEM_TAIL_CALL arguments: [ // cmd: const = 0x2 (8 bytes) // arg: ptr[inout, bpf_map_update_tail_call_arg] { // bpf_map_update_tail_call_arg { // map: tail_call_map_update { // in: tail_call_map_fd (resource) // out: tail_call_map (resource) // } // pad = 0x0 (4 bytes) // key: ptr[in, const[0, const]] { // const = 0x0 (4 bytes) // } // val: ptr[in, fd_bpf_prog] { // fd_bpf_prog (resource) // } // flags: const = 0x0 (8 bytes) // } // } // size: len = 0x20 (8 bytes) // ] NONFAILING(*(uint32_t*)0x200000000200 = r[1]); NONFAILING(*(uint64_t*)0x200000000208 = 0x200000000180); NONFAILING(*(uint32_t*)0x200000000180 = 0); NONFAILING(*(uint64_t*)0x200000000210 = 0x2000000001c0); NONFAILING(*(uint32_t*)0x2000000001c0 = r[2]); NONFAILING(*(uint64_t*)0x200000000218 = 0); syscall(__NR_bpf, /*cmd=*/2ul, /*arg=*/0x200000000200ul, /*size=*/0x20ul); // syz_open_procfs$namespace arguments: [ // pid: pid (resource) // file: nil // ] // returns fd_namespace NONFAILING(syz_open_procfs(/*pid=*/0, /*file=*/0)); // syz_open_procfs$namespace arguments: [ // pid: pid (resource) // file: ptr[in, buffer] { // buffer: {6e 73 2f 69 70 63 00} (length 0x7) // } // ] // returns fd_namespace NONFAILING(memcpy((void*)0x200000000300, "ns/ipc\000", 7)); NONFAILING(syz_open_procfs(/*pid=*/0, /*file=*/0x200000000300)); // bpf$MAP_GET_NEXT_KEY arguments: [ // cmd: const = 0x4 (8 bytes) // arg: nil // size: len = 0x0 (8 bytes) // ] syscall(__NR_bpf, /*cmd=*/4ul, /*arg=*/0ul, /*size=*/0ul); } 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); install_segv_handler(); use_temporary_dir(); do_sandbox_none(); return 0; }