// https://syzkaller.appspot.com/bug?id=408ae7c8a4162a0cc35da0b0a6d252851c487a7e // 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 #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; } #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 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"); } static void execute_one(void); #define WAIT_FLAGS __WALL static void loop(void) { int iter = 0; for (;; iter++) { int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { setup_test(); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; sleep_ms(1); if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } } } uint64_t r[3] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; NONFAILING(*(uint32_t*)0x200000c0 = 0x11); NONFAILING(*(uint32_t*)0x200000c4 = 0xb); NONFAILING(*(uint64_t*)0x200000c8 = 0x20000440); NONFAILING(*(uint8_t*)0x20000440 = 0x18); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000441, 0, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000441, 0, 4, 4)); NONFAILING(*(uint16_t*)0x20000442 = 0); NONFAILING(*(uint32_t*)0x20000444 = 0); NONFAILING(*(uint8_t*)0x20000448 = 0); NONFAILING(*(uint8_t*)0x20000449 = 0); NONFAILING(*(uint16_t*)0x2000044a = 0); NONFAILING(*(uint32_t*)0x2000044c = 0); NONFAILING(*(uint8_t*)0x20000450 = 0x18); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000451, 1, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000451, 0, 4, 4)); NONFAILING(*(uint16_t*)0x20000452 = 0); NONFAILING(*(uint32_t*)0x20000454 = 0x256c6c78); NONFAILING(*(uint8_t*)0x20000458 = 0); NONFAILING(*(uint8_t*)0x20000459 = 0); NONFAILING(*(uint16_t*)0x2000045a = 0); NONFAILING(*(uint32_t*)0x2000045c = 0x20202000); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000460, 3, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000460, 3, 3, 2)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000460, 3, 5, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000461, 0xa, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000461, 1, 4, 4)); NONFAILING(*(uint16_t*)0x20000462 = 0xfff8); NONFAILING(*(uint32_t*)0x20000464 = 0); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000468, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000468, 1, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000468, 0xb, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000469, 1, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000469, 0xa, 4, 4)); NONFAILING(*(uint16_t*)0x2000046a = 0); NONFAILING(*(uint32_t*)0x2000046c = 0); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000470, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000470, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000470, 0, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000471, 1, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000471, 0, 4, 4)); NONFAILING(*(uint16_t*)0x20000472 = 0); NONFAILING(*(uint32_t*)0x20000474 = 0xfffffff8); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000478, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000478, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000478, 0xb, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000479, 2, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000479, 0, 4, 4)); NONFAILING(*(uint16_t*)0x2000047a = 0); NONFAILING(*(uint32_t*)0x2000047c = 8); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000480, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000480, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000480, 0xb, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000481, 3, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000481, 0, 4, 4)); NONFAILING(*(uint16_t*)0x20000482 = 0); NONFAILING(*(uint32_t*)0x20000484 = 0); NONFAILING(*(uint8_t*)0x20000488 = 0x85); NONFAILING(*(uint8_t*)0x20000489 = 0); NONFAILING(*(uint16_t*)0x2000048a = 0); NONFAILING(*(uint32_t*)0x2000048c = 6); NONFAILING(*(uint8_t*)0x20000490 = 0x95); NONFAILING(*(uint8_t*)0x20000491 = 0); NONFAILING(*(uint16_t*)0x20000492 = 0); NONFAILING(*(uint32_t*)0x20000494 = 0); NONFAILING(*(uint64_t*)0x200000d0 = 0x20000240); NONFAILING(memcpy((void*)0x20000240, "GPL\000", 4)); NONFAILING(*(uint32_t*)0x200000d8 = 0); NONFAILING(*(uint32_t*)0x200000dc = 0); NONFAILING(*(uint64_t*)0x200000e0 = 0); NONFAILING(*(uint32_t*)0x200000e8 = 0); NONFAILING(*(uint32_t*)0x200000ec = 0); NONFAILING(memset((void*)0x200000f0, 0, 16)); NONFAILING(*(uint32_t*)0x20000100 = 0); NONFAILING(*(uint32_t*)0x20000104 = 0); NONFAILING(*(uint32_t*)0x20000108 = -1); NONFAILING(*(uint32_t*)0x2000010c = 0); NONFAILING(*(uint64_t*)0x20000110 = 0); NONFAILING(*(uint32_t*)0x20000118 = 0); NONFAILING(*(uint32_t*)0x2000011c = 0); NONFAILING(*(uint64_t*)0x20000120 = 0); NONFAILING(*(uint32_t*)0x20000128 = 0); NONFAILING(*(uint32_t*)0x2000012c = 0); NONFAILING(*(uint32_t*)0x20000130 = 0); NONFAILING(*(uint32_t*)0x20000134 = 0); NONFAILING(*(uint64_t*)0x20000138 = 0); NONFAILING(*(uint64_t*)0x20000140 = 0); NONFAILING(*(uint32_t*)0x20000148 = 0); NONFAILING(*(uint32_t*)0x2000014c = 0); res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200000c0ul, /*size=*/0x90ul); if (res != -1) r[0] = res; NONFAILING(*(uint64_t*)0x20000000 = 0x20000040); NONFAILING(memcpy((void*)0x20000040, "kmem_cache_free\000", 16)); NONFAILING(*(uint32_t*)0x20000008 = r[0]); syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x20000000ul, /*size=*/0x10ul); syscall(__NR_socketpair, /*domain=*/0x1eul, /*type=*/4ul, /*proto=*/0, /*fds=*/0ul); NONFAILING(*(uint64_t*)0x20000080 = 0); NONFAILING(*(uint32_t*)0x20000088 = 0); NONFAILING(*(uint64_t*)0x20000090 = 0x20000440); NONFAILING(*(uint64_t*)0x20000440 = 0); NONFAILING(*(uint64_t*)0x20000448 = 0); NONFAILING(*(uint64_t*)0x20000098 = 1); NONFAILING(*(uint64_t*)0x200000a0 = 0); NONFAILING(*(uint64_t*)0x200000a8 = 0); NONFAILING(*(uint32_t*)0x200000b0 = 0); syscall(__NR_sendmsg, /*fd=*/-1, /*msg=*/0x20000080ul, /*f=*/0ul); syscall(__NR_close, /*fd=*/-1); NONFAILING(*(uint32_t*)0x20000a40 = 0x14); NONFAILING(*(uint32_t*)0x20000a44 = 0xc); NONFAILING(*(uint64_t*)0x20000a48 = 0x20000040); NONFAILING(*(uint8_t*)0x20000040 = 0x18); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000041, 0, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000041, 0, 4, 4)); NONFAILING(*(uint16_t*)0x20000042 = 0); NONFAILING(*(uint32_t*)0x20000044 = 0); NONFAILING(*(uint8_t*)0x20000048 = 0); NONFAILING(*(uint8_t*)0x20000049 = 0); NONFAILING(*(uint16_t*)0x2000004a = 0); NONFAILING(*(uint32_t*)0x2000004c = 0); NONFAILING(*(uint8_t*)0x20000050 = 0x18); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000051, 1, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000051, 1, 4, 4)); NONFAILING(*(uint16_t*)0x20000052 = 0); NONFAILING(*(uint32_t*)0x20000054 = -1); NONFAILING(*(uint8_t*)0x20000058 = 0); NONFAILING(*(uint8_t*)0x20000059 = 0); NONFAILING(*(uint16_t*)0x2000005a = 0); NONFAILING(*(uint32_t*)0x2000005c = 0); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000060, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000060, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000060, 0xb, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000061, 8, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000061, 0, 4, 4)); NONFAILING(*(uint16_t*)0x20000062 = 0); NONFAILING(*(uint32_t*)0x20000064 = 0); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000068, 3, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000068, 3, 3, 2)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000068, 3, 5, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000069, 0xa, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000069, 8, 4, 4)); NONFAILING(*(uint16_t*)0x2000006a = 0xfff8); NONFAILING(*(uint32_t*)0x2000006c = 0); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000070, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000070, 1, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000070, 0xb, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000071, 2, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000071, 0xa, 4, 4)); NONFAILING(*(uint16_t*)0x20000072 = 0); NONFAILING(*(uint32_t*)0x20000074 = 0); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000078, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000078, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000078, 0, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000079, 2, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000079, 0, 4, 4)); NONFAILING(*(uint16_t*)0x2000007a = 0); NONFAILING(*(uint32_t*)0x2000007c = 0xfffffff8); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000080, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000080, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000080, 0xb, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000081, 3, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000081, 0, 4, 4)); NONFAILING(*(uint16_t*)0x20000082 = 0); NONFAILING(*(uint32_t*)0x20000084 = 8); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000088, 7, 0, 3)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000088, 0, 3, 1)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000088, 0xb, 4, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000089, 4, 0, 4)); NONFAILING(STORE_BY_BITMASK(uint8_t, , 0x20000089, 0, 4, 4)); NONFAILING(*(uint16_t*)0x2000008a = 0); NONFAILING(*(uint32_t*)0x2000008c = 0); NONFAILING(*(uint8_t*)0x20000090 = 0x85); NONFAILING(*(uint8_t*)0x20000091 = 0); NONFAILING(*(uint16_t*)0x20000092 = 0); NONFAILING(*(uint32_t*)0x20000094 = 0x58); NONFAILING(*(uint8_t*)0x20000098 = 0x95); NONFAILING(*(uint8_t*)0x20000099 = 0); NONFAILING(*(uint16_t*)0x2000009a = 0); NONFAILING(*(uint32_t*)0x2000009c = 0); NONFAILING(*(uint64_t*)0x20000a50 = 0x20000280); NONFAILING(memcpy((void*)0x20000280, "syzkaller\000", 10)); NONFAILING(*(uint32_t*)0x20000a58 = 0); NONFAILING(*(uint32_t*)0x20000a5c = 0); NONFAILING(*(uint64_t*)0x20000a60 = 0); NONFAILING(*(uint32_t*)0x20000a68 = 0); NONFAILING(*(uint32_t*)0x20000a6c = 0); NONFAILING(memset((void*)0x20000a70, 0, 16)); NONFAILING(*(uint32_t*)0x20000a80 = 0); NONFAILING(*(uint32_t*)0x20000a84 = 0x25); NONFAILING(*(uint32_t*)0x20000a88 = -1); NONFAILING(*(uint32_t*)0x20000a8c = 8); NONFAILING(*(uint64_t*)0x20000a90 = 0); NONFAILING(*(uint32_t*)0x20000a98 = 0); NONFAILING(*(uint32_t*)0x20000a9c = 0x10); NONFAILING(*(uint64_t*)0x20000aa0 = 0); NONFAILING(*(uint32_t*)0x20000aa8 = 0); NONFAILING(*(uint32_t*)0x20000aac = 0); NONFAILING(*(uint32_t*)0x20000ab0 = 0); NONFAILING(*(uint32_t*)0x20000ab4 = 0); NONFAILING(*(uint64_t*)0x20000ab8 = 0); NONFAILING(*(uint64_t*)0x20000ac0 = 0); NONFAILING(*(uint32_t*)0x20000ac8 = 0x10); NONFAILING(*(uint32_t*)0x20000acc = 0); syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000a40ul, /*size=*/0x1cul); NONFAILING(sprintf((char*)0x20000180, "0x%016llx", (long long)3)); syscall(__NR_write, /*fd=*/-1, /*buf=*/0x20000180ul, /*len=*/0x12ul); NONFAILING(*(uint32_t*)0x200000c0 = 0x1b); NONFAILING(*(uint32_t*)0x200000c4 = 0); NONFAILING(*(uint32_t*)0x200000c8 = 0); NONFAILING(*(uint32_t*)0x200000cc = 0x8000); NONFAILING(*(uint32_t*)0x200000d0 = 0); NONFAILING(*(uint32_t*)0x200000d4 = -1); NONFAILING(*(uint32_t*)0x200000d8 = 0); NONFAILING(memset((void*)0x200000dc, 0, 16)); NONFAILING(*(uint32_t*)0x200000ec = 0); NONFAILING(*(uint32_t*)0x200000f0 = -1); NONFAILING(*(uint32_t*)0x200000f4 = 0); NONFAILING(*(uint32_t*)0x200000f8 = 0); NONFAILING(*(uint32_t*)0x200000fc = 0); NONFAILING(*(uint64_t*)0x20000100 = 0); syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x200000c0ul, /*size=*/0x48ul); NONFAILING(*(uint64_t*)0x20000000 = 0x20000200); NONFAILING(memcpy((void*)0x20000200, "ext4_sync_file_enter\000", 21)); NONFAILING(*(uint32_t*)0x20000008 = -1); syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x20000000ul, /*size=*/0x10ul); NONFAILING(*(uint32_t*)0x20000340 = 2); NONFAILING(*(uint32_t*)0x20000344 = 4); NONFAILING(*(uint32_t*)0x20000348 = 8); NONFAILING(*(uint32_t*)0x2000034c = 1); NONFAILING(*(uint32_t*)0x20000350 = 0x80); NONFAILING(*(uint32_t*)0x20000354 = -1); NONFAILING(*(uint32_t*)0x20000358 = 0); NONFAILING(memset((void*)0x2000035c, 0, 16)); NONFAILING(*(uint32_t*)0x2000036c = 0); NONFAILING(*(uint32_t*)0x20000370 = -1); NONFAILING(*(uint32_t*)0x20000374 = 0); NONFAILING(*(uint32_t*)0x20000378 = 0); NONFAILING(*(uint32_t*)0x2000037c = 0); NONFAILING(*(uint64_t*)0x20000380 = 0); res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x20000340ul, /*size=*/0x48ul); if (res != -1) r[1] = res; NONFAILING(*(uint32_t*)0x20000480 = r[1]); syscall(__NR_bpf, /*cmd=*/0x16ul, /*arg=*/0x20000480ul, /*size=*/4ul); NONFAILING(*(uint32_t*)0x200004c0 = 0x11); NONFAILING(*(uint32_t*)0x200004c4 = 0x18); NONFAILING(*(uint64_t*)0x200004c8 = 0x200001c0); NONFAILING( memcpy((void*)0x200001c0, "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\xb7\x08\x00\x00\x00\x00\x00\x00\x7b\x8a\xf8\xff\x00\x00\x00\x00" "\xb7\x08\x00\x00\x00\x00\x00\x00\x7b\x8a\xf0\xff\x00\x00\x00\x00" "\xbf\xa1\x00\x00\x00\x00\x00\x00\x07\x01\x00\x00\xf8\xff\xff\xff" "\xbf\xa4\x00\x00\x00\x00\x00\x00\x07\x04\x00\x00\xf0\xff\xff\xff" "\xb7\x02\x00\x00\x00\x00\x00\x00\x18\x23\x00\x00", 92)); NONFAILING(*(uint32_t*)0x2000021c = r[1]); NONFAILING(memcpy( (void*)0x20000220, "\x00\x00\x00\x00\x00\x00\x00\x00\xb7\x05\x00\x00\x00\x00\x00\x00\x85\x00" "\x00\x00\xa5\x00\x00\x00\x18\x01\x00\x00\x20\x20\x64\x05\x00\x00\x00\x00" "\x00\x20\x20\x20\x7b\x1a\xf8\xff\x00\x00\x00\x00\xbf\xa1\x00\x00\x00\x00" "\x00\x00\x07\x01\x00\x00\xf8\xff\xff\xff\xb7\x02\x00\x00\x08\x00\x00\x00" "\xb7\x03\x00\x00\x00\x00\x00\x00\xa5\x00\x00\x00\x08\x00\x00\x00\x95", 89)); NONFAILING(*(uint64_t*)0x200004d0 = 0x20000600); NONFAILING(memcpy((void*)0x20000600, "GPL\000", 4)); NONFAILING(*(uint32_t*)0x200004d8 = 0); NONFAILING(*(uint32_t*)0x200004dc = 0); NONFAILING(*(uint64_t*)0x200004e0 = 0); NONFAILING(*(uint32_t*)0x200004e8 = 0); NONFAILING(*(uint32_t*)0x200004ec = 0); NONFAILING(memset((void*)0x200004f0, 0, 16)); NONFAILING(*(uint32_t*)0x20000500 = 0); NONFAILING(*(uint32_t*)0x20000504 = 0); NONFAILING(*(uint32_t*)0x20000508 = 0); NONFAILING(*(uint32_t*)0x2000050c = 0); NONFAILING(*(uint64_t*)0x20000510 = 0); NONFAILING(*(uint32_t*)0x20000518 = 0); NONFAILING(*(uint32_t*)0x2000051c = 0); NONFAILING(*(uint64_t*)0x20000520 = 0); NONFAILING(*(uint32_t*)0x20000528 = 0); NONFAILING(*(uint32_t*)0x2000052c = 0); NONFAILING(*(uint32_t*)0x20000530 = 0); NONFAILING(*(uint32_t*)0x20000534 = 0); NONFAILING(*(uint64_t*)0x20000538 = 0); NONFAILING(*(uint64_t*)0x20000540 = 0); NONFAILING(*(uint32_t*)0x20000548 = 0); NONFAILING(*(uint32_t*)0x2000054c = 0); res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200004c0ul, /*size=*/0x90ul); if (res != -1) r[2] = res; NONFAILING(*(uint64_t*)0x200002c0 = 0x20000000); NONFAILING(memcpy((void*)0x20000000, "kmem_cache_free\000", 16)); NONFAILING(*(uint32_t*)0x200002c8 = r[2]); syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x200002c0ul, /*size=*/0x10ul); } int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); install_segv_handler(); for (procid = 0; procid < 5; procid++) { if (fork() == 0) { loop(); } } sleep(1000000); return 0; }