// 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 #include #include #include #include #ifndef __NR_bpf #define __NR_bpf 321 #endif static unsigned long long procid; 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; } #define MAX_FDS 30 static void setup_common() { 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)) { } if (symlink("/dev/binderfs", "./binderfs")) { } } static void loop(); static void sandbox_common() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setsid(); 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); setup_common(); sandbox_common(); drop_caps(); if (unshare(CLONE_NEWNET)) { } write_file("/proc/sys/net/ipv4/ping_group_range", "0 65535"); setup_binderfs(); loop(); 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"); } static void close_fds() { for (int fd = 3; fd < MAX_FDS; fd++) close(fd); } 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(); close_fds(); 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; *(uint32_t*)0x20000340 = 2; *(uint32_t*)0x20000344 = 4; *(uint32_t*)0x20000348 = 8; *(uint32_t*)0x2000034c = 1; *(uint32_t*)0x20000350 = 0x80; *(uint32_t*)0x20000354 = -1; *(uint32_t*)0x20000358 = 0; memset((void*)0x2000035c, 0, 16); *(uint32_t*)0x2000036c = 0; *(uint32_t*)0x20000370 = -1; *(uint32_t*)0x20000374 = 0; *(uint32_t*)0x20000378 = 0; *(uint32_t*)0x2000037c = 0; *(uint64_t*)0x20000380 = 0; res = syscall(__NR_bpf, /*cmd=*/0ul, /*arg=*/0x20000340ul, /*size=*/0x48ul); if (res != -1) r[0] = res; *(uint32_t*)0x20000480 = r[0]; syscall(__NR_bpf, /*cmd=*/0x16ul, /*arg=*/0x20000480ul, /*size=*/4ul); *(uint32_t*)0x200004c0 = 0x11; *(uint32_t*)0x200004c4 = 0x18; *(uint64_t*)0x200004c8 = 0x200001c0; 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); *(uint32_t*)0x2000021c = r[0]; 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); *(uint64_t*)0x200004d0 = 0x20000600; memcpy((void*)0x20000600, "GPL\000", 4); *(uint32_t*)0x200004d8 = 0; *(uint32_t*)0x200004dc = 0; *(uint64_t*)0x200004e0 = 0; *(uint32_t*)0x200004e8 = 0; *(uint32_t*)0x200004ec = 0; memset((void*)0x200004f0, 0, 16); *(uint32_t*)0x20000500 = 0; *(uint32_t*)0x20000504 = 0; *(uint32_t*)0x20000508 = 0; *(uint32_t*)0x2000050c = 0; *(uint64_t*)0x20000510 = 0; *(uint32_t*)0x20000518 = 0; *(uint32_t*)0x2000051c = 0; *(uint64_t*)0x20000520 = 0; *(uint32_t*)0x20000528 = 0; *(uint32_t*)0x2000052c = 0; *(uint32_t*)0x20000530 = 0; *(uint32_t*)0x20000534 = 0; *(uint64_t*)0x20000538 = 0; *(uint64_t*)0x20000540 = 0; *(uint32_t*)0x20000548 = 0; *(uint32_t*)0x2000054c = 0; res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x200004c0ul, /*size=*/0x90ul); if (res != -1) r[1] = res; *(uint64_t*)0x200001c0 = 0x20000000; memcpy((void*)0x20000000, "kfree\000", 6); *(uint32_t*)0x200001c8 = r[1]; syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x200001c0ul, /*size=*/0x10ul); *(uint32_t*)0x20000140 = 0x11; *(uint32_t*)0x20000144 = 8; *(uint64_t*)0x20000148 = 0x20000200; memcpy( (void*)0x20000200, "\x62\x0a\xf8\xff\x0c\x20\x00\x21\xbf\xa1\x00\x00\x00\x00\x00\x00\x07\x01" "\x00\x00\xf8\xff\xff\xff\xb7\x02\x00\x00\x03\x00\x00\x00\xbd\x12\x00\x00" "\x00\x00\x00\x00\x85\x00\x00\x00\x06\x00\x00\x00\xb7\x00\x00\x00\x00\x00" "\x00\x00\x95\x00\x00\x00\x00\x00\x00\x00\x3f\xaf\x4f\x2a\xa3\xd9\xb1\x8e" "\xd8\x12\xa2\xe2\xc4\x9e\x80\x20\xa6\xf4\xe0\xe4\xa9\x44\x6c\x76\x70\x56" "\x89\x82\xb4\xe0\x20\xf6\x98\x39\x3a\xa0\xf3\x88\x1f\x9c\x24\xaa\x56\xf1" "\x51\x99\xfa\xd0\x09\x3c\x59\xd6\x6b\x5e\xce\x9f\x36\xc7\x0d\x0f\xf5\xb1" "\x41\x04\xfe\x62\xcc\x60\xe4\x13\x90\x5e\xa2\x3c\x22\x62\x4c\x9f\x87\xf9" "\x79\x3f\x50\xbb\x54\x60\x40\x67\x7b\x0c\x50\x77\xda\x80\xfb\x98\x2c\x1e" "\x94\x00\xe6\x93\x14\x6c\xea\x48\x4a\x41\x5b\x76\x96\x61\x18\xb6\x4f\x75" "\x1a\x0f\x24\x1b\x07\x2e\x90\x08\x00\x08\x00\x2d\x75\x59\x3a\x28\x6c\xec" "\xc9\x3e\x64\xc2\x27\xc9\x5a\xa0\xb7\x84\x62\x57\x04\xf0\x7a\x72\xc2\x34" "\x66\x4c\x0a\xf9\x36\x0a\x1f\x7a\x5e\x6b\x60\x71\x30\xc8\x9f\x18\xc0\xc1" "\x08\x9d\x8b\x85\x32\x89\xd0\x1a\xa2\x7a\xe8\xb0\x9e\x00\xe7\x9a\xb2\x0b" "\x0b\x8e\x11\x48\xf4\x9f\xaf\x2a\xd0\x00\x00\x00\x00\x00\x00\x00\x6f\xa0" "\x3c\x64\x68\x97\x20\x89\xb3\x02\xd7\xbf\x23\x64\x14\x92\x15\x10\x83\x33" "\x71\x9a\xcd\x97\xcf\xa1\x07\xd4\x02\x24\xed\xc5\x46\x5a\x93\xdf\x85\x13" "\xa3\x2e\xc4\x50\xbe\xbc\x60\x99\xad\x23\x00\x00\x00\x80\x00\x6e\xf6\xc1" "\xff\x09\x00\x00\x00\x00\x00\x00\x10\xc6\x3a\x94\x9e\x8b\x79\x55\x39\x4f" "\xfa\x82\xb8\xe9\x42\xc8\x91\x12\xf4\xab\x87\xb1\xbf\xed\xa7\xbe\x58\x66" "\x02\xd9\x85\x43\x0c\xea\x01\x62\xab\x3f\xcf\x45\x91\xc9\x26\xab\xfb\x07" "\x67\x19\x23\x7c\x8d\x0e\x60\xb0\xee\xa2\x44\x92\xa6\x60\x58\x3e\xec\xdb" "\xf5\xbc\xd3\xde\x3a\x83\x20\x9d\xa1\x7a\x0f\xaf\x60\xfd\x6a\xd9\xb9\x7a" "\xa5\xfa\x68\x48\x03\x66\xc9\xc6\xfd\x6f\xa5\x04\x3a\xa3\x92\x6b\x81\xe3" "\xb5\x9c\x95\xc2\x5a\x57\x3d\xc2\xed\xca\xea\x2b\x1a\x52\x49\x6d\xfc\xaf" "\x99\x43\x14\x12\xfd\x13\x4a\x99\x63\x82\xa1\xa0\x4d\x5b\xb9\x24\xcf\xe5" "\x11\x19\x54\x18\xd6\x05\xff\xff\x9c\x4d\x2e\xc7\xc3\x2f\x20\x95\xe6\x3c" "\x80\xaf\xf9\xfa\x74\x0b\x5b\x76\x32\xf3\x20\x30\x91\x6f\x89\xc6\xda\xd7" "\x60\x3f\x2b\xa2\xa7\x90\xd6\x2d\x6f\xae\xc2\xfe\xd4\x4d\xa4\x92\x93\x30" "\x14\x2b\xa1\x1d\xe6\xc5\xd5\x0b\x83\xba\xe6\x13\x40\x22\x16\xb5\x05\x4d" "\x1e\x7c\x13\xb1\x35\x5d\x6f\x4a\x82\x45\xff\xa4\x99\x7d\xa8\xc7\x7a\xf4" "\xc0\xeb\x97\xfc\xa5\x85\xec\x6b\xf5\x83\x51\xd5\x64\xbe\xb6\xd9\x52\xaa" "\xb9\xc7\x07\x64\xb0\xa8\xa7\x58\x3c\x90\xb3\x43\x3b\x80\x9b\xdb\x9f\xbd" "\x48\xbc\x87\x34\x95\xcb\xff\x8a\x32\x6e\xea\x31\xae\x4e\x0f\x75\x05\xeb" "\xf6\xc9\xd1\x33\x30\xca\x00\x6b\xce\x1a\x84\x52\x1f\x14\x51\x8c\x9b\x47" "\x6f\xcc\xbd\x6c\x71\x20\x16\x21\x98\x48\x62\x4b\x87\xce\xc2\xdb\xe9\x82" "\x23\xa0\xeb\x4f\xa3\x9f\x6b\x5c\x02\xe6\xd6\xd9\x07\x56\xff\x57\x90\x2a" "\x8f\x57\x00\x00\x00\x00\x97\x00\xcf\x0b\x4b\x8b\xc2\x29\x41\x33\x00\x00" "\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00\x00\xdd\x11" "\xe6\xe8\x86\x1c\x46\x49\x5b\xa5\x85\xa4\xb2\xd0\x2e\xdc\x3e\x28\xdd\x27" "\x1c\x89\x62\x49\xed\x85\xb9\x80\x68\x0b\x00\x00\x2b\x43\x5a\xc1\x5f\x2a" "\x16\x9c\xdc\xac\xc4\x13\xb4\x8d\xaf\xb7\xa2\xc8\xcb\x48\x2b\xac\x0a\xc5" "\x02\xd9\xba\x96\xff\xff\xff\x7f\x00\x00\x10\x00\x00\x00\x00\x00\x00\x90" "\x5a\xd8\x97\xef\x3b\x7c\xda\x42\x01\x3d\x53\x04\x6d\xa2\x1b\x40\x21\x6e" "\x14\xba\x2d\x6a\xd5\x65\x6b\xff\xf1\x7a\xdd\xae\xda\xb2\x5b\x30\x00\x2a" "\xbb\xba\x7f\xa7\x25\xf3\x84\x00\xbe\xe3\xdf\xc8\xfb\x24\xf6\x7c\x1f\x00" "\x1b\x2c\xd3\x17\x90\x2f\x19\xe3\x85\xbe\x9e\x48\xdc\xcf\xf7\x29\x43\x32" "\x82\x83\x06\x89\xda\x6b\x53\xb2\x63\x33\x98\x63\x29\x77\x71\x42\x9d\x12" "\x00\x00\x00\x33\x41\xb7\x4a\xba\xa7\xc9\x59\x00\xfc\xa0\x49\x3c\xf2\x9b" "\x33\xdc\xc9\xff\xff\xff\xff\xff\xff\xff\xd3\x9f\xec\x22\x71\xff\x01\x58" "\x96\x46\xef\xd1\xcf\x87\x0c\xd7\xbb\x23\x2b\xbd\xb9\xdc\x33\xcb\xd7\x64" "\x38\x66\xfd\xe4\x1f\x94\x29\x0c\x2a\x5f\xf8\x70\xce\x5d\xfd\x34\x67\xde" "\xcb\x05\xcf\xd9\xfc\xb3\x2c\x8e\xd1\xdb\xd9\xd1\x0a\x64\xc1\x08\x3d\x5e" "\x71\xb5\x56\x5b\x17\x68\xee\x58\x96\x9c\x41\x59\x52\x70\xfb\x40\x21\x42" "\x8c\xe9\x70\x27\x5d\x13\xb7\x81\x00\x78\x8f\x11\xf7\x61\x03\x8b\x75\xd4" "\xfe\x32\xb5\x61\xd4\x6e\xa3\xab\xe0\xfa\x4d\x30\xdc\x94\xef\x24\x18\x75" "\xf3\xb4\xce\x02\x32\xfc\xea\x69\xc2\x71\xd7\xfa\x29\x82\x2a\xea\x68\xa6" "\x60\xe7\x17\xa0\x4b\xec\xff\x0f\x71\x91\x97\x72\x4f\x4f\xce\x10\x93\xb6" "\x2d\x7e\x8c\x71\x23\xd8\xec\x57\x1b\xe5\x4c\x72\xd9\x78\xcf\x90\x6d\xf0" "\x04\x2e\x36\xac\xd3\x7d\x7f\x9e\x11\x9f\x2c\x06\xf8\x15\x31\x2e\x0c\xfe" "\x22\x2a\x06\xf7\x6d\xd0\x22\xc0\x74\xeb\x8a\x32\x2f\xb0\xbf\x47\xc0\xa8" "\xd1\x54\xb4\x05\xc3\x7f\xea\xf3\xdd\x95\xf6\xef\x2a\xcd\x1f\xe5\x82\x78" "\x61\x05\xc7\xdf\x8b\xe5\x87\x70\x50\xc9\x13\x01\xbb\x99\x73\x16\xdb\xf1" "\x78\x66\xfb\x84\xd4\x17\x37\x31\xef\xe8\x95\xff\x2e\x1c\x55\x60\x92\x6e" "\x90\x10\x9b\x59\x85\x02\xd2\xe9\x59\xef\xc7\x1f\x66\x5c\x4d\x75\xcf\x24" "\x58\xe3\x32\x2c\x90\x62\xec\xe8\x4c\x99\xa0\x61\x99\x7a\x20\x63\x9b\x41" "\xc8\xc1\x2e\xe8\x6c\x50\x80\x40\x42\xb3\xea\xc1\xf8\x79\xb1\x36\x34\x5c" "\xf6\x7c\xa3\xfb\x5a\xac\x51\x8a\x75\xf9\xe7\xd7\x10\x1d\x5e\x18\x6c\x48" "\x9b\x3a\x06\xfb\x99\xf0\xaa\x7f\x23\xa0\x54\xde\x2f\x4d\x92\xd6\xbd\x72" "\xee\x2c\x9f\xdc\x75\xaa\xaf\x1e\x3e\x48\x3b\x4a\xd0\x55\x73\xaf\x40\x32" "\x69\x93\x94\x7d\x9a\x63\x1b\xcb\xf3\x58\x37\x84\xac\xbd\xa2\x16\x55\x0d" "\x7a\xec\x6b\x79\xe3\x0c\xbd\x12\x8f\x54\xc2\xd3\x33\x54\x57\xac\xf3\x73" "\x31\x76\x6e\x47\x23\x91\xe3\x58\xc3\xb3\x77\x32\x7a\xc9\xec\xc3\x4f\x24" "\xc9\xae\x15\x3e\xc6\x0a\xc0\x69\x4d\xc5\x5b\xff\x9f\x5f\x4d\xf9\x04\x00" "\x00\x00\x00\x00\x00\x00\xd6\xb2\xc5\xea\x13\x93\xfd\xf2\x42\x85\xbf\x16" "\xb9\x9c\x9c\xc0\xad\x18\x57\x21\x6f\x1a\x98\x5f\x36\x91\x91\xae\x95\x4f" "\xeb\xb3\xdf\x46\x4b\xfe\x0f\x7f\x3e\xe9\xaf\xe7\xbe\xfb\x89\xd2\x77\x73" "\x99\xf5\x87\x4c\x55\x3a\xeb\x37\x29\xcf\xfe\x86\xe6\x69\x64\xae\x09\xbb" "\x6d\x16\x41\x18\xe4\xcb\xe0\x24\x00\x00\x00\x00\xff\x07\x00\x00\x00\x00" "\xcc\x9d\x80\x46\xc2\x16\xc1\xf8\x95\x77\x8c\xb2\x51\x22\xa2\xa9\x98\xde" 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"\x8d\xf7\x5c\xf4\x3f\x8e\xcc\x8d\x37\x26\x60\x21\x11\xb4\x0e\x76\x1f\xd2" "\x10\x81\x92\x03\x82\xf1\x4d\x12\xca\x3c\x34\x31\xee\x97\x47\x1c\x78\x68" "\xdc\xda\x7e\xaa\x69\xeb\x7f\x7f\x80\x57\x2f\xdd\x11\xbb\x1d\x0d\x12\x80" "\xfb\xc2\x2b\xf7\x34\x68\x78\x8d\xf5\x17\x10\xd7\xd3\x1c\x63\x2f\xc5\xed" "\x17\x85\xeb\x0b\x42\x8e\xe7\x51\xc4\x7d\x8e\x89\x4f\x74\x5a\x86\x84\x04" "\xa0\xbf\x35\xf0\x12\x10\x08\xb7\x22\xb1\xea\xa6\xae\xdf\xa1\xbf\x2e\x7c" "\xcb\x2d\x61\xd5\xd7\x63\x31\x94\x5e\x20\xfa\x26\xb8\x47\x1d\x42\x64\x52" "\x88\xd7\x22\x6b\xbd\x9c\x9e\x9e\x1c\xc9\xeb\x3d\x54\x1e\x40\x7c\xc2\xda" "\xe5\xe6\x90\xcd\x62\x8a\xb8\x48\x75\xf2\xc5\x0b\xa8\x91\xce\xa5\x99\xb0" "\x79\xb4\xb4\xba\x68\x6f\xcd\xf2\x40\x43\x0a\x53\x7a\x39\x5d\xc7\x3b\xda" "\x36\x7b\xf1\x2c\xb7\xd8\x16\x91\xa5\xfe\x8c\x47\xbe\x2f\x56\x56\xa2\x97" "\xe9\xdf\x0e\x71\xf9\x67\x56\xea\x5c\xce\x7d\xaa\xc4\xbe\x29\x01\x59\xf6" "\xbc\xd7\x5f\x0d\xda\x9d\xe5\x53\x2e\x71\xae\x9e\x48\xb0\xed\x12\x54\xa8" "\x31\x00\x00\x00\x00\xf6\xfb\xb8\x69\x60\x4d\x51\xa3\x6a\x54\xc8\x32\xe4" "\x5b\x25\x69\xdc\x0d\x90\xb0\x75\x22\x5f\xde\x44\xc4\xe0\x97\x31\x71\xad" "\x47\xd6\xb7\x0e\xbc\x66\x03\x09\xe1\xe2\x45\xb0\xfd\x78\xf9\x74\x3a\xf9" "\x32\xcd\x6d\xb4\x9a\x47\x61\x38\x08\xba\xd9\x59\x71\x9c\x00\x00\x00\x00" "\x00\x37\x8a\x92\x1c\x7f\x7f\x69\x33\xc2\xe2\x4c\x7e\x80\x00\x03\xc9\xe8" "\x09\x5e\x02\x98\x5f\x28\xde\x0b\xbc\x76\xd5\x8d\xd9\x26\x06\xb1\xef\x64" "\x86\xc8\x5f\xa3\xe6\x78\xf6\x64\x22\x43\x6f\x94\x9e\x2a\xb8\xf1\x62\xd7" "\xe3\xf8\x55\xe3\x78\xf4\xa1\xf4\x0b\x0c\x6f\xb2\xd4\xb2\x05\xa8\x00\xb6" "\x96\x8d\x12\x41\x8a\x4d\x2a\x0d\x08\x6d\x84\x38\xd4\x15\xd7\x13\xac\xeb" "\xc5\xb0\x14\xe6\x1a\x54\x3a\x5a\x39\x1f\x03\xda\xca\x80\xf0\x8f\x0e\x3b" "\x1a\x56\x9e\x73\x97\xf6\xca\xfa\x86\x96\x6d\x7b\xa1\x9e\x72\x04\x13\x26" "\x7a\x6c\xce\xa9\xc4\x39\x67\x1d\x2c\x68\x0f\x27\x53\xca\x18\x4e\xee\xb8" "\x43\x45\x03\x68\xac\xb4\x38\x3a\x01\xd2\x5e\xb3\xd1\xe2\x3e\x11\x26\x45" "\xd1\xcd\xfa\x9f\xa4\x10\x63\x2f\x95\xa5\xf6\x22\xf8\x51\xc6\x6e\xe7\xe3" "\x03\x93\xcd\x7a\x4d\x67\xff\x2a\x49\xc4\xf9\x3c\x09\x84\xb5\xc2\xd4\x52" "\x34\x97\xe4\xd6\x4f\x95\xf0\x84\x93\x56\x4a\x1d\xf8\x71\x11\xc9\xbf\x31" "\x94\xfe\xf9\x7d\xce\xcc\x46\x7a\xce\x45\xfe\xeb\x68\x5c\x58\x70\xd0\x5f" "\x88\xa0\xf4\x63\xdb\x88\xd3\x77\x44\x2e\x13\x49\xac\xaf\x76\x62\x18\xb5" "\x4a\x9d\x62\x47\x78\xe1\xc4\xcb\xa6\xe6\x39\x0a\x9f\x30\x2c\x6e\xb2\xdf" "\x77\x66\x41\x1b\xef\x0e\xbb\x50\x00\x00\x00\x00\x00\x60\x65\xd6\x73\x5e" "\xb7\xa0\x0e\x12\x7c\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\xa1\xc3\xda\x14\x45\x89\xdc\xad\xdb\x71\xcf\x93\x74\x84\x3e\x23" "\xf9\x92\xa2\x37\xa9\x04\x07\x47\xe0\x43\x4a\x8a\x64\x39\x90\xb4\x05\x9a" "\x98\x41\x1c\xe8\x67\xd1\xaf\x7e\x8e\xa8\x9f\x49\xe6\xf5\x64\xd4\xdc\xe8" "\xa7\xd6\x93\x9a\x92\x14\xa7\xf3\x9e\x83\xbd\x24\x7e\x03\xa0\x9d\xba\x00" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xaa\xf0\x33\xd4\x72\x49\xc8" "\x44\x4b\xc1\x38\x44\xcb\xf1\xbe\x61\x7d\x82\xb2\x69\xe5\xea\x0c\x0d\x52" "\x56\x03\xc0\xec\x54\x3e\xa5\x81\xf6\x38\x93\xae\x41\x4a\x66\x83\xe9\x41" "\xfd\xbd\xff\x03\xcf\xc5\xf8\x74\x45\x83\xc0\xaa\x76\x6a\x65\x32\x1f\x90" "\x79\x27\xa5\x9d\x75\xb4\x7f\x06\x89\x5e\x84\x71\xeb\xc2\x84\x0c\xe5\xbd" "\x05\x4d\xf2\x23\xfb\x09\xb9\xc7\x39\xad\x64\xcf\xcf\xd2\xd4\x98\xb0\xf1" "\x10\x56\xf6\xc4\x08\x74\xcb\x97\x7c\x99\xb6\xbc\x1a\x87\x32\x19\x8a\x17" "\xe6\x10\x08\x2b\x7c\xe0\x36\x5f\x27\x1b\x11\xd4\xb4\xa3\xd4\xc7\xd0\xbb" "\x27\x3f\x40\x6e\xcd\x4b\x26\xc9\x31\x51\xc3\x0f\x5a\x26\x99\x91\x40\x2d" "\x10\x9b\xec\xb1\xb9\xba\xfc\xb2\xb4\x7e\x94\x00\x00\x00\x00\x00\xe5\x40" "\xd8\xb0\xdb\x37\x74\xef\xfb\x74\x69\xa2\x1f\x96\xe2\x59\x4b\x29\x73\xeb" "\xf7\xa1\xbd\x9a\xce\x2e\xd4\xd6\xeb\x17\x35\xf8\x58\x85\xbe\x5b\xe7\x4d" "\xc2\xea\x5d\x7d\x49\x9b\xd2\x82\x71\xb9\x8f\x18\x7f\x58\x79\xb1\x6b\x40" "\x9a\x04\xd7\x81\x75\xcc\x8d\x0f\x70\x7c\x82\x28\x05\xd7\x01\x1e\xd4\xb2" "\x24\x19\x18\x6d\xd2\xb2\x2a\xad\xf1\x58\x28\xdb\x2c\xa1\x9d\x79\xe1\xbf" "\x2f\x79\x89\x23\x7e\xe5\xcb\x2e\x1e\xb7\xb2\xbf\xc9\x2d\x3a\xa9\x5a\x26" "\xf0\x60\x93\x5c\x4f\xee\x8b\x2d\x7d\x0b\xf3\xc6\xd8\x2d\x04\x32\x91\x64" "\xbd\x4e\xe0\xb8\x06\x01\x83\xf3\x67\x62\xb0\x44\x0d\x90\x82\xd7\xc8\xb0" "\x6e\x4c\x20\x24\xf7\x7e\x10\x18\x75\x8d\x28\xe7\xee\x29\x0f\x32\xa4\x8b" "\xfc\x2a\xa1\x0b\x3d\xba\x9b\xff\x00\xd2\x41\x0f\x34\x77\xa8\xe0\xdf\x68" "\x9c\x88\x0d\xc9\xa6\x77\xcf\xaa\x16\x60\x35\x27\xc0\x66\x25\xa3\x36\x37" "\x44\xce\xa5\xf2\xd3\x50\x22\x4c\xc0\xfe\xa7\x6c\x72\xca\x08\x50\x72\x35" "\xc6\x73\x46\x72\x2f\x20\x69\x0f\xde\x07\x90\xf0\x40\xf5\xfd\x3e\xff\x75" "\xf9\xb2\x91\xcc\x5e\x9c\x68\x6e\xba\xad\xbe\x75\x6c\x6f\xa0\x39\xff\x44" "\x1e\x42\x7e\xd1\x25\x78\xd5\xcb\x04\x1e\xbf\x72\x9c\xfa\xa5\x75\xcc\x85" "\x2f\xbd\xb5\x4e\x60\x43\x5e\x6d\x62\xb9\xd2\x70\x43\x3b\x22\x0e\xd9\xff" "\x1f\xf0\x42\xb8\xd3\xd8\x66\x23\x1c\x46\x07\x65", 3072); *(uint64_t*)0x20000150 = 0x20000100; memcpy((void*)0x20000100, "GPL\000", 4); *(uint32_t*)0x20000158 = 0; *(uint32_t*)0x2000015c = 0; *(uint64_t*)0x20000160 = 0; *(uint32_t*)0x20000168 = 0; *(uint32_t*)0x2000016c = 0; memset((void*)0x20000170, 0, 16); *(uint32_t*)0x20000180 = 0; *(uint32_t*)0x20000184 = 0; *(uint32_t*)0x20000188 = -1; *(uint32_t*)0x2000018c = 8; *(uint64_t*)0x20000190 = 0x20000000; *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 0; *(uint32_t*)0x20000198 = 8; *(uint32_t*)0x2000019c = 0x10; *(uint64_t*)0x200001a0 = 0x20000000; *(uint32_t*)0x20000000 = 0; *(uint32_t*)0x20000004 = 0; *(uint32_t*)0x20000008 = 0; *(uint32_t*)0x2000000c = 0; *(uint32_t*)0x200001a8 = 0x10; *(uint32_t*)0x200001ac = 0; *(uint32_t*)0x200001b0 = -1; *(uint32_t*)0x200001b4 = 0; *(uint64_t*)0x200001b8 = 0; *(uint64_t*)0x200001c0 = 0; *(uint32_t*)0x200001c8 = 0x10; *(uint32_t*)0x200001cc = 0; res = syscall(__NR_bpf, /*cmd=*/5ul, /*arg=*/0x20000140ul, /*size=*/0x1ful); if (res != -1) r[2] = res; *(uint64_t*)0x20000100 = 0x20000080; memcpy((void*)0x20000080, "kfree\000", 6); *(uint32_t*)0x20000108 = r[2]; syscall(__NR_bpf, /*cmd=*/0x11ul, /*arg=*/0x20000100ul, /*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); for (procid = 0; procid < 5; procid++) { if (fork() == 0) { do_sandbox_none(); } } sleep(1000000); return 0; }