| // general protection fault in get_work_pool |
| // https://syzkaller.appspot.com/bug?id=18cfd49c158d37dd54481bd376cec513444cd571 |
| // status:open |
| // autogenerated by syzkaller (https://github.com/google/syzkaller) |
| |
| #define _GNU_SOURCE |
| |
| #include <dirent.h> |
| #include <endian.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <sched.h> |
| #include <signal.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/mount.h> |
| #include <sys/prctl.h> |
| #include <sys/resource.h> |
| #include <sys/stat.h> |
| #include <sys/syscall.h> |
| #include <sys/time.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <time.h> |
| #include <unistd.h> |
| |
| 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 void setup_common() |
| { |
| if (mount(0, "/sys/fs/fuse/connections", "fusectl", 0, 0)) { |
| } |
| } |
| |
| static void loop(); |
| |
| static void sandbox_common() |
| { |
| prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); |
| setpgrp(); |
| setsid(); |
| struct rlimit rlim; |
| rlim.rlim_cur = rlim.rlim_max = 160 << 20; |
| setrlimit(RLIMIT_AS, &rlim); |
| rlim.rlim_cur = rlim.rlim_max = 8 << 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 = 0; |
| setrlimit(RLIMIT_CORE, &rlim); |
| rlim.rlim_cur = rlim.rlim_max = 256; |
| setrlimit(RLIMIT_NOFILE, &rlim); |
| if (unshare(CLONE_NEWNS)) { |
| } |
| if (unshare(CLONE_NEWIPC)) { |
| } |
| if (unshare(0x02000000)) { |
| } |
| if (unshare(CLONE_NEWUTS)) { |
| } |
| if (unshare(CLONE_SYSVSEM)) { |
| } |
| } |
| |
| int wait_for_loop(int pid) |
| { |
| if (pid < 0) |
| exit(1); |
| int status = 0; |
| while (waitpid(-1, &status, __WALL) != pid) { |
| } |
| return WEXITSTATUS(status); |
| } |
| |
| 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(); |
| if (unshare(CLONE_NEWNET)) { |
| } |
| loop(); |
| exit(1); |
| } |
| |
| static void kill_and_wait(int pid, int* status) |
| { |
| kill(-pid, SIGKILL); |
| kill(pid, SIGKILL); |
| int i; |
| for (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) { |
| } |
| } |
| |
| #define SYZ_HAVE_SETUP_TEST 1 |
| static void setup_test() |
| { |
| prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); |
| setpgrp(); |
| } |
| |
| #define SYZ_HAVE_RESET_TEST 1 |
| static void reset_test() |
| { |
| int fd; |
| for (fd = 3; fd < 30; fd++) |
| close(fd); |
| } |
| |
| static void execute_one(void); |
| |
| #define WAIT_FLAGS __WALL |
| |
| static void loop(void) |
| { |
| int iter; |
| for (iter = 0;; iter++) { |
| int pid = fork(); |
| if (pid < 0) |
| exit(1); |
| if (pid == 0) { |
| setup_test(); |
| execute_one(); |
| reset_test(); |
| 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 < 5 * 1000) |
| continue; |
| kill_and_wait(pid, &status); |
| break; |
| } |
| } |
| } |
| |
| uint64_t r[2] = {0xffffffffffffffff, 0x0}; |
| |
| void execute_one(void) |
| { |
| long res = 0; |
| res = syscall(__NR_socket, 0x10, 3, 6); |
| if (res != -1) |
| r[0] = res; |
| *(uint64_t*)0x20000300 = 0x20000000; |
| *(uint16_t*)0x20000000 = 0x10; |
| *(uint16_t*)0x20000002 = 0; |
| *(uint32_t*)0x20000004 = 0; |
| *(uint32_t*)0x20000008 = 0; |
| *(uint32_t*)0x20000308 = 0xc; |
| *(uint64_t*)0x20000310 = 0x200002c0; |
| *(uint64_t*)0x200002c0 = 0x20000100; |
| *(uint64_t*)0x200002c8 = 1; |
| *(uint64_t*)0x20000318 = 1; |
| *(uint64_t*)0x20000320 = 0; |
| *(uint64_t*)0x20000328 = 0; |
| *(uint32_t*)0x20000330 = 0; |
| syscall(__NR_sendmsg, r[0], 0x20000300, 0); |
| *(uint32_t*)0x20000180 = 0x80; |
| res = syscall(__NR_getsockname, r[0], 0x20000540, 0x20000180); |
| if (res != -1) |
| r[1] = *(uint32_t*)0x20000544; |
| *(uint64_t*)0x20000500 = 0x200000c0; |
| *(uint16_t*)0x200000c0 = 0x10; |
| *(uint16_t*)0x200000c2 = 0; |
| *(uint32_t*)0x200000c4 = 0; |
| *(uint32_t*)0x200000c8 = 0x20000000; |
| *(uint32_t*)0x20000508 = 0xc; |
| *(uint64_t*)0x20000510 = 0x20000280; |
| *(uint64_t*)0x20000280 = 0x20000340; |
| *(uint32_t*)0x20000340 = 0x150; |
| *(uint16_t*)0x20000344 = 0x19; |
| *(uint16_t*)0x20000346 = 0x309; |
| *(uint32_t*)0x20000348 = 0x70bd26; |
| *(uint32_t*)0x2000034c = 0x25dfdbfe; |
| *(uint8_t*)0x20000350 = 0; |
| *(uint8_t*)0x20000351 = 0; |
| *(uint8_t*)0x20000352 = 0; |
| *(uint8_t*)0x20000353 = 0; |
| *(uint8_t*)0x20000354 = 0; |
| *(uint8_t*)0x20000355 = 0; |
| *(uint8_t*)0x20000356 = 0; |
| *(uint8_t*)0x20000357 = 0; |
| *(uint8_t*)0x20000358 = 0; |
| *(uint8_t*)0x20000359 = 0; |
| *(uint8_t*)0x2000035a = -1; |
| *(uint8_t*)0x2000035b = -1; |
| *(uint32_t*)0x2000035c = htobe32(0xe0000001); |
| *(uint64_t*)0x20000360 = htobe64(0); |
| *(uint64_t*)0x20000368 = htobe64(1); |
| *(uint16_t*)0x20000370 = htobe16(0x4e23); |
| *(uint16_t*)0x20000372 = htobe16(0xf11); |
| *(uint16_t*)0x20000374 = htobe16(0x4e20); |
| *(uint16_t*)0x20000376 = htobe16(0x1ff); |
| *(uint16_t*)0x20000378 = 0xa; |
| *(uint8_t*)0x2000037a = 0x20; |
| *(uint8_t*)0x2000037b = 0x80; |
| *(uint8_t*)0x2000037c = 0x2b; |
| *(uint32_t*)0x20000380 = r[1]; |
| *(uint32_t*)0x20000384 = 0; |
| *(uint64_t*)0x20000388 = 0x6a; |
| *(uint64_t*)0x20000390 = 0xfffffffffffffff8; |
| *(uint64_t*)0x20000398 = 4; |
| *(uint64_t*)0x200003a0 = 8; |
| *(uint64_t*)0x200003a8 = 0x200000; |
| *(uint64_t*)0x200003b0 = 1; |
| *(uint64_t*)0x200003b8 = 0x17c; |
| *(uint64_t*)0x200003c0 = -1; |
| *(uint64_t*)0x200003c8 = 9; |
| *(uint64_t*)0x200003d0 = 0xc3ef; |
| *(uint64_t*)0x200003d8 = 4; |
| *(uint64_t*)0x200003e0 = 0x400; |
| *(uint32_t*)0x200003e8 = 0; |
| *(uint32_t*)0x200003ec = 0x6e6bb6; |
| *(uint8_t*)0x200003f0 = 2; |
| *(uint8_t*)0x200003f1 = 1; |
| *(uint8_t*)0x200003f2 = 0; |
| *(uint8_t*)0x200003f3 = 0; |
| *(uint16_t*)0x200003f8 = 0x48; |
| *(uint16_t*)0x200003fa = 3; |
| memcpy((void*)0x200003fc, |
| "\x64\x65\x66\x6c\x61\x74\x65\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" |
| "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" |
| "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" |
| "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", |
| 64); |
| *(uint32_t*)0x2000043c = 0; |
| *(uint16_t*)0x20000440 = 0x48; |
| *(uint16_t*)0x20000442 = 3; |
| memcpy((void*)0x20000444, |
| "\x6c\x7a\x6a\x68\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" |
| "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" |
| "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" |
| "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", |
| 64); |
| *(uint32_t*)0x20000484 = 0; |
| *(uint16_t*)0x20000488 = 8; |
| *(uint16_t*)0x2000048a = 0x16; |
| *(uint32_t*)0x2000048c = 8; |
| *(uint64_t*)0x20000288 = 0x150; |
| *(uint64_t*)0x20000518 = 1; |
| *(uint64_t*)0x20000520 = 0; |
| *(uint64_t*)0x20000528 = 0; |
| *(uint32_t*)0x20000530 = 0x880; |
| syscall(__NR_sendmsg, r[0], 0x20000500, 0xc800); |
| } |
| int main(void) |
| { |
| syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); |
| for (procid = 0; procid < 8; procid++) { |
| if (fork() == 0) { |
| do_sandbox_none(); |
| } |
| } |
| sleep(1000000); |
| return 0; |
| } |