// https://syzkaller.appspot.com/bug?id=85722769b8fb6a6b7c1c260d763ecf4f727710d8 // 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 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 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"); } #define KMEMLEAK_FILE "/sys/kernel/debug/kmemleak" static const char* setup_leak() { if (!write_file(KMEMLEAK_FILE, "scan=off")) { if (errno == EBUSY) return "KMEMLEAK disabled: increase CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE" " or unset CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF"; return "failed to write(kmemleak, \"scan=off\")"; } if (!write_file(KMEMLEAK_FILE, "scan")) return "failed to write(kmemleak, \"scan\")"; sleep(5); if (!write_file(KMEMLEAK_FILE, "scan")) return "failed to write(kmemleak, \"scan\")"; if (!write_file(KMEMLEAK_FILE, "clear")) return "failed to write(kmemleak, \"clear\")"; return NULL; } static void check_leaks(void) { int fd = open(KMEMLEAK_FILE, O_RDWR); if (fd == -1) exit(1); uint64_t start = current_time_ms(); if (write(fd, "scan", 4) != 4) exit(1); sleep(1); while (current_time_ms() - start < 4 * 1000) sleep(1); if (write(fd, "scan", 4) != 4) exit(1); static char buf[128 << 10]; ssize_t n = read(fd, buf, sizeof(buf) - 1); if (n < 0) exit(1); int nleaks = 0; if (n != 0) { sleep(1); if (write(fd, "scan", 4) != 4) exit(1); if (lseek(fd, 0, SEEK_SET) < 0) exit(1); n = read(fd, buf, sizeof(buf) - 1); if (n < 0) exit(1); buf[n] = 0; char* pos = buf; char* end = buf + n; while (pos < end) { char* next = strstr(pos + 1, "unreferenced object"); if (!next) next = end; char prev = *next; *next = 0; fprintf(stderr, "BUG: memory leak\n%s\n", pos); *next = prev; pos = next; nleaks++; } } if (write(fd, "clear", 5) != 5) exit(1); close(fd); if (nleaks) exit(1); } 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 (;;) { 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; } check_leaks(); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } // socket$nl_xfrm arguments: [ // domain: const = 0x10 (8 bytes) // type: const = 0x3 (8 bytes) // proto: const = 0x6 (4 bytes) // ] // returns sock_nl_xfrm res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/6); if (res != -1) r[0] = res; // sendmsg$nl_xfrm arguments: [ // fd: sock_nl_xfrm (resource) // msg: ptr[in, msghdr_netlink[netlink_msg_xfrm]] { // msghdr_netlink[netlink_msg_xfrm] { // addr: nil // addrlen: len = 0x0 (4 bytes) // pad = 0x0 (4 bytes) // vec: ptr[in, iovec[in, netlink_msg_xfrm]] { // iovec[in, netlink_msg_xfrm] { // addr: ptr[in, netlink_msg_xfrm] { // union netlink_msg_xfrm { // updpolicy: netlink_msg_t[const[XFRM_MSG_UPDPOLICY, int16], // xfrm_userpolicy_info, xfrma_policy] { // len: len = 0xfc (4 bytes) // type: const = 0x19 (2 bytes) // flags: netlink_msg_flags = 0x1 (2 bytes) // seq: int32 = 0x0 (4 bytes) // pid: int32 = 0x0 (4 bytes) // payload: xfrm_userpolicy_info { // sel: xfrm_selector { // daddr: union xfrm_address_t { // in6: union ipv6_addr { // rand_addr: buffer: {20 01 00 00 00 00 00 00 00 00 // 00 00 00 00 00 00} (length 0x10) // } // } // saddr: union xfrm_address_t { // in: union ipv4_addr { // local: ipv4_addr_t[const[170, int8]] { // a0: const = 0xac (1 bytes) // a1: const = 0x14 (1 bytes) // a2: const = 0x14 (1 bytes) // a3: const = 0xaa (1 bytes) // } // } // } // dport: int16be = 0x0 (2 bytes) // dport_mask: int16be = 0x0 (2 bytes) // sport: int16be = 0x0 (2 bytes) // sport_mask: int16be = 0x0 (2 bytes) // family: xfrm_family = 0xa (2 bytes) // prefixlen_d: xfrm_prefixlens = 0x0 (1 bytes) // prefixlen_s: xfrm_prefixlens = 0x0 (1 bytes) // proto: ipv6_types = 0x0 (1 bytes) // pad = 0x0 (3 bytes) // ifindex: ifindex (resource) // user: uid (resource) // } // lft: xfrm_lifetime_cfg { // soft_byte_limit: int64 = 0x0 (8 bytes) // hard_byte_limit: int64 = 0xa9 (8 bytes) // soft_packet_limit: int64 = 0x0 (8 bytes) // hard_packet_limit: int64 = 0x0 (8 bytes) // soft_add_expires_seconds: int64 = 0x0 (8 bytes) // hard_add_expires_seconds: int64 = 0xffffffffffffffff // (8 bytes) soft_use_expires_seconds: int64 = 0x0 (8 // bytes) hard_use_expires_seconds: int64 = 0x0 (8 bytes) // } // curlft: xfrm_lifetime_cur { // bytes: int64 = 0x0 (8 bytes) // packets: int64 = 0xa00 (8 bytes) // add_time: int64 = 0x40800000000000 (8 bytes) // use_time: int64 = 0x800000000000000 (8 bytes) // } // priority: int32 = 0x0 (4 bytes) // index: int32 = 0x0 (4 bytes) // dir: xfrm_policy_dir = 0x0 (1 bytes) // action: xfrm_policy_actions = 0x0 (1 bytes) // flags: xfrm_policy_flags = 0x0 (1 bytes) // share: xfrm_policy_shares = 0x0 (1 bytes) // pad = 0x0 (4 bytes) // } // attrs: array[xfrma_policy] { // union xfrma_policy { // tmpl: nlattr_t[const[XFRMA_TMPL, int16], // array[xfrm_user_tmpl, 1:XFRM_MAX_DEPTH]] { // nla_len: offsetof = 0x44 (2 bytes) // nla_type: const = 0x5 (2 bytes) // payload: array[xfrm_user_tmpl] { // xfrm_user_tmpl { // id: xfrm_id { // daddr: union xfrm_address_t { // in: union ipv4_addr { // local: ipv4_addr_t[const[170, int8]] { // a0: const = 0xac (1 bytes) // a1: const = 0x14 (1 bytes) // a2: const = 0x14 (1 bytes) // a3: const = 0xaa (1 bytes) // } // } // } // spi: int32be = 0x0 (4 bytes) // proto: xfrm_proto = 0x3c (1 bytes) // pad = 0x0 (3 bytes) // } // family: xfrm_family = 0x0 (2 bytes) // pad = 0x0 (2 bytes) // saddr: union xfrm_address_t { // in: union ipv4_addr { // broadcast: const = 0xffffffff (4 bytes) // } // } // reqid: int32 = 0x0 (4 bytes) // mode: xfrm_mode = 0x0 (1 bytes) // share: xfrm_policy_shares = 0x3 (1 bytes) // optional: int8 = 0x0 (1 bytes) // pad = 0x0 (1 bytes) // aalgos: int32 = 0x0 (4 bytes) // ealgos: int32 = 0x0 (4 bytes) // calgos: int32 = 0x0 (4 bytes) // } // } // size: buffer: {} (length 0x0) // } // } // } // } // } // } // len: len = 0xfc (8 bytes) // } // } // vlen: const = 0x1 (8 bytes) // ctrl: const = 0x0 (8 bytes) // ctrllen: const = 0x0 (8 bytes) // f: send_flags = 0x0 (4 bytes) // pad = 0x0 (4 bytes) // } // } // f: send_flags = 0x0 (8 bytes) // ] *(uint64_t*)0x200000000480 = 0; *(uint32_t*)0x200000000488 = 0; *(uint64_t*)0x200000000490 = 0x200000001f40; *(uint64_t*)0x200000001f40 = 0x2000000004c0; *(uint32_t*)0x2000000004c0 = 0xfc; *(uint16_t*)0x2000000004c4 = 0x19; *(uint16_t*)0x2000000004c6 = 1; *(uint32_t*)0x2000000004c8 = 0; *(uint32_t*)0x2000000004cc = 0; memcpy((void*)0x2000000004d0, " \001\000\000\000\000\000\000\000\000\000\000\000\000\000\000", 16); *(uint8_t*)0x2000000004e0 = 0xac; *(uint8_t*)0x2000000004e1 = 0x14; *(uint8_t*)0x2000000004e2 = 0x14; *(uint8_t*)0x2000000004e3 = 0xaa; *(uint16_t*)0x2000000004f0 = htobe16(0); *(uint16_t*)0x2000000004f2 = htobe16(0); *(uint16_t*)0x2000000004f4 = htobe16(0); *(uint16_t*)0x2000000004f6 = htobe16(0); *(uint16_t*)0x2000000004f8 = 0xa; *(uint8_t*)0x2000000004fa = 0; *(uint8_t*)0x2000000004fb = 0; *(uint8_t*)0x2000000004fc = 0; *(uint32_t*)0x200000000500 = 0; *(uint32_t*)0x200000000504 = -1; *(uint64_t*)0x200000000508 = 0; *(uint64_t*)0x200000000510 = 0xa9; *(uint64_t*)0x200000000518 = 0; *(uint64_t*)0x200000000520 = 0; *(uint64_t*)0x200000000528 = 0; *(uint64_t*)0x200000000530 = -1; *(uint64_t*)0x200000000538 = 0; *(uint64_t*)0x200000000540 = 0; *(uint64_t*)0x200000000548 = 0; *(uint64_t*)0x200000000550 = 0xa00; *(uint64_t*)0x200000000558 = 0x40800000000000; *(uint64_t*)0x200000000560 = 0x800000000000000; *(uint32_t*)0x200000000568 = 0; *(uint32_t*)0x20000000056c = 0; *(uint8_t*)0x200000000570 = 0; *(uint8_t*)0x200000000571 = 0; *(uint8_t*)0x200000000572 = 0; *(uint8_t*)0x200000000573 = 0; *(uint16_t*)0x200000000578 = 0x44; *(uint16_t*)0x20000000057a = 5; *(uint8_t*)0x20000000057c = 0xac; *(uint8_t*)0x20000000057d = 0x14; *(uint8_t*)0x20000000057e = 0x14; *(uint8_t*)0x20000000057f = 0xaa; *(uint32_t*)0x20000000058c = htobe32(0); *(uint8_t*)0x200000000590 = 0x3c; *(uint16_t*)0x200000000594 = 0; *(uint32_t*)0x200000000598 = htobe32(-1); *(uint32_t*)0x2000000005a8 = 0; *(uint8_t*)0x2000000005ac = 0; *(uint8_t*)0x2000000005ad = 3; *(uint8_t*)0x2000000005ae = 0; *(uint32_t*)0x2000000005b0 = 0; *(uint32_t*)0x2000000005b4 = 0; *(uint32_t*)0x2000000005b8 = 0; *(uint64_t*)0x200000001f48 = 0xfc; *(uint64_t*)0x200000000498 = 1; *(uint64_t*)0x2000000004a0 = 0; *(uint64_t*)0x2000000004a8 = 0; *(uint32_t*)0x2000000004b0 = 0; syscall(__NR_sendmsg, /*fd=*/r[0], /*msg=*/0x200000000480ul, /*f=*/0ul); // socket$nl_xfrm arguments: [ // domain: const = 0x10 (8 bytes) // type: const = 0x3 (8 bytes) // proto: const = 0x6 (4 bytes) // ] // returns sock_nl_xfrm res = syscall(__NR_socket, /*domain=*/0x10ul, /*type=*/3ul, /*proto=*/6); if (res != -1) r[1] = res; // sendmsg$nl_xfrm arguments: [ // fd: sock_nl_xfrm (resource) // msg: ptr[in, msghdr_netlink[netlink_msg_xfrm]] { // msghdr_netlink[netlink_msg_xfrm] { // addr: nil // addrlen: len = 0x0 (4 bytes) // pad = 0x0 (4 bytes) // vec: ptr[in, iovec[in, netlink_msg_xfrm]] { // iovec[in, netlink_msg_xfrm] { // addr: ptr[in, netlink_msg_xfrm] { // union netlink_msg_xfrm { // migrate: netlink_msg_t[const[XFRM_MSG_MIGRATE, int16], // xfrm_userpolicy_id, xfrma_policy] { // len: len = 0xec (4 bytes) // type: const = 0x21 (2 bytes) // flags: netlink_msg_flags = 0x1 (2 bytes) // seq: int32 = 0x0 (4 bytes) // pid: int32 = 0x0 (4 bytes) // payload: xfrm_userpolicy_id { // sel: xfrm_selector { // daddr: union xfrm_address_t { // in: union ipv4_addr { // multicast1: const = 0xe0000001 (4 bytes) // } // } // saddr: union xfrm_address_t { // in6: union ipv6_addr { // private2: ipv6_addr_private[2] { // a0: const = 0xfc (1 bytes) // a1: const = 0x2 (1 bytes) // a2: buffer: {00 00 00 00 00 00 00 00 00 00 00 00 // 00} (length 0xd) a3: int8 = 0x0 (1 bytes) // } // } // } // dport: int16be = 0x0 (2 bytes) // dport_mask: int16be = 0x0 (2 bytes) // sport: int16be = 0x0 (2 bytes) // sport_mask: int16be = 0x0 (2 bytes) // family: xfrm_family = 0xa (2 bytes) // prefixlen_d: xfrm_prefixlens = 0xe0 (1 bytes) // prefixlen_s: xfrm_prefixlens = 0x0 (1 bytes) // proto: ipv6_types = 0x3b (1 bytes) // pad = 0x0 (3 bytes) // ifindex: ifindex (resource) // user: uid (resource) // } // index: int32 = 0x0 (4 bytes) // dir: xfrm_policy_dir = 0x0 (1 bytes) // pad = 0x0 (3 bytes) // } // attrs: array[xfrma_policy] { // union xfrma_policy { // migrate: nlattr_t[const[XFRMA_MIGRATE, int16], // array[xfrm_user_migrate, 1:XFRM_MAX_DEPTH]] { // nla_len: offsetof = 0x9c (2 bytes) // nla_type: const = 0x11 (2 bytes) // payload: array[xfrm_user_migrate] { // xfrm_user_migrate { // old_daddr: union xfrm_address_t { // in6: union ipv6_addr { // remote: ipv6_addr_t[const[0xbb, int8]] { // a0: const = 0xfe (1 bytes) // a1: const = 0x80 (1 bytes) // a2: buffer: {00 00 00 00 00 00 00 00 00 00 // 00 00 00} (length 0xd) a3: const = 0xbb (1 // bytes) // } // } // } // old_saddr: union xfrm_address_t { // in6: union ipv6_addr { // local: ipv6_addr_t[const[0xaa, int8]] { // a0: const = 0xfe (1 bytes) // a1: const = 0x80 (1 bytes) // a2: buffer: {00 00 00 00 00 00 00 00 00 00 // 00 00 00} (length 0xd) a3: const = 0xaa (1 // bytes) // } // } // } // new_daddr: union xfrm_address_t { // in6: union ipv6_addr { // dev: ipv6_addr_t[netdev_addr_id] { // a0: const = 0xfe (1 bytes) // a1: const = 0x80 (1 bytes) // a2: buffer: {00 00 00 00 00 00 00 00 00 00 // 00 00 00} (length 0xd) a3: int8 = 0xb (1 // bytes) // } // } // } // new_saddr: union xfrm_address_t { // in: union ipv4_addr { // initdev: ipv4_addr_initdev { // a0: const = 0xac (1 bytes) // a1: const = 0x1e (1 bytes) // a2: int8 = 0x0 (1 bytes) // a3: proc = 0x0 (1 bytes) // } // } // } // proto: xfrm_proto = 0x33 (1 bytes) // mode: xfrm_mode = 0x1 (1 bytes) // reserved: const = 0x0 (2 bytes) // reqid: int32 = 0x3502 (4 bytes) // old_family: xfrm_family = 0xa (2 bytes) // new_family: xfrm_family = 0x8 (2 bytes) // } // xfrm_user_migrate { // old_daddr: union xfrm_address_t { // in6: union ipv6_addr { // ipv4: ipv6_addr_ipv4 { // a0: buffer: {00 00 00 00 00 00 00 00 00 // 00} (length 0xa) a1: buffer: {ff ff} // (length 0x2) a3: union ipv4_addr { // loopback: const = 0x7f000001 (4 bytes) // } // } // } // } // old_saddr: union xfrm_address_t { // in6: union ipv6_addr { // private2: ipv6_addr_private[2] { // a0: const = 0xfc (1 bytes) // a1: const = 0x2 (1 bytes) // a2: buffer: {00 00 00 00 00 00 00 00 00 00 // 00 00 00} (length 0xd) a3: int8 = 0x0 (1 // bytes) // } // } // } // new_daddr: union xfrm_address_t { // in: union ipv4_addr { // rand_addr: int32be = 0x64010102 (4 bytes) // } // } // new_saddr: union xfrm_address_t { // in6: union ipv6_addr { // private2: ipv6_addr_private[2] { // a0: const = 0xfc (1 bytes) // a1: const = 0x2 (1 bytes) // a2: buffer: {00 00 00 00 00 00 00 00 00 00 // 00 00 00} (length 0xd) a3: int8 = 0x0 (1 // bytes) // } // } // } // proto: xfrm_proto = 0x3c (1 bytes) // mode: xfrm_mode = 0x0 (1 bytes) // reserved: const = 0x0 (2 bytes) // reqid: int32 = 0x0 (4 bytes) // old_family: xfrm_family = 0x8 (2 bytes) // new_family: xfrm_family = 0x2 (2 bytes) // } // } // size: buffer: {} (length 0x0) // } // } // } // } // } // } // len: len = 0xec (8 bytes) // } // } // vlen: const = 0x1 (8 bytes) // ctrl: const = 0x0 (8 bytes) // ctrllen: const = 0x0 (8 bytes) // f: send_flags = 0x80 (4 bytes) // pad = 0x0 (4 bytes) // } // } // f: send_flags = 0x0 (8 bytes) // ] *(uint64_t*)0x200000000380 = 0; *(uint32_t*)0x200000000388 = 0; *(uint64_t*)0x200000000390 = 0x200000000340; *(uint64_t*)0x200000000340 = 0x200000000640; *(uint32_t*)0x200000000640 = 0xec; *(uint16_t*)0x200000000644 = 0x21; *(uint16_t*)0x200000000646 = 1; *(uint32_t*)0x200000000648 = 0; *(uint32_t*)0x20000000064c = 0; *(uint32_t*)0x200000000650 = htobe32(0xe0000001); *(uint8_t*)0x200000000660 = 0xfc; *(uint8_t*)0x200000000661 = 2; memset((void*)0x200000000662, 0, 13); *(uint8_t*)0x20000000066f = 0; *(uint16_t*)0x200000000670 = htobe16(0); *(uint16_t*)0x200000000672 = htobe16(0); *(uint16_t*)0x200000000674 = htobe16(0); *(uint16_t*)0x200000000676 = htobe16(0); *(uint16_t*)0x200000000678 = 0xa; *(uint8_t*)0x20000000067a = 0xe0; *(uint8_t*)0x20000000067b = 0; *(uint8_t*)0x20000000067c = 0x3b; *(uint32_t*)0x200000000680 = 0; *(uint32_t*)0x200000000684 = 0; *(uint32_t*)0x200000000688 = 0; *(uint8_t*)0x20000000068c = 0; *(uint16_t*)0x200000000690 = 0x9c; *(uint16_t*)0x200000000692 = 0x11; *(uint8_t*)0x200000000694 = 0xfe; *(uint8_t*)0x200000000695 = 0x80; memset((void*)0x200000000696, 0, 13); *(uint8_t*)0x2000000006a3 = 0xbb; *(uint8_t*)0x2000000006a4 = 0xfe; *(uint8_t*)0x2000000006a5 = 0x80; memset((void*)0x2000000006a6, 0, 13); *(uint8_t*)0x2000000006b3 = 0xaa; *(uint8_t*)0x2000000006b4 = 0xfe; *(uint8_t*)0x2000000006b5 = 0x80; memset((void*)0x2000000006b6, 0, 13); *(uint8_t*)0x2000000006c3 = 0xb; *(uint8_t*)0x2000000006c4 = 0xac; *(uint8_t*)0x2000000006c5 = 0x1e; *(uint8_t*)0x2000000006c6 = 0; *(uint8_t*)0x2000000006c7 = 1; *(uint8_t*)0x2000000006d4 = 0x33; *(uint8_t*)0x2000000006d5 = 1; *(uint16_t*)0x2000000006d6 = 0; *(uint32_t*)0x2000000006d8 = 0x3502; *(uint16_t*)0x2000000006dc = 0xa; *(uint16_t*)0x2000000006de = 8; memset((void*)0x2000000006e0, 0, 10); memset((void*)0x2000000006ea, 255, 2); *(uint32_t*)0x2000000006ec = htobe32(0x7f000001); *(uint8_t*)0x2000000006f0 = 0xfc; *(uint8_t*)0x2000000006f1 = 2; memset((void*)0x2000000006f2, 0, 13); *(uint8_t*)0x2000000006ff = 0; *(uint32_t*)0x200000000700 = htobe32(0x64010102); *(uint8_t*)0x200000000710 = 0xfc; *(uint8_t*)0x200000000711 = 2; memset((void*)0x200000000712, 0, 13); *(uint8_t*)0x20000000071f = 0; *(uint8_t*)0x200000000720 = 0x3c; *(uint8_t*)0x200000000721 = 0; *(uint16_t*)0x200000000722 = 0; *(uint32_t*)0x200000000724 = 0; *(uint16_t*)0x200000000728 = 8; *(uint16_t*)0x20000000072a = 2; *(uint64_t*)0x200000000348 = 0xec; *(uint64_t*)0x200000000398 = 1; *(uint64_t*)0x2000000003a0 = 0; *(uint64_t*)0x2000000003a8 = 0; *(uint32_t*)0x2000000003b0 = 0x80; syscall(__NR_sendmsg, /*fd=*/r[1], /*msg=*/0x200000000380ul, /*f=*/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); const char* reason; (void)reason; if ((reason = setup_leak())) printf("the reproducer may not work as expected: leak checking setup " "failed: %s\n", reason); loop(); return 0; }