// https://syzkaller.appspot.com/bug?id=d832d517ce683761fa5f46d9fb331716fb2ae635 // 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 #ifndef __NR_memfd_create #define __NR_memfd_create 319 #endif static unsigned long long procid; //% This code is derived from puff.{c,h}, found in the zlib development. The //% original files come with the following copyright notice: //% Copyright (C) 2002-2013 Mark Adler, all rights reserved //% version 2.3, 21 Jan 2013 //% This software is provided 'as-is', without any express or implied //% warranty. In no event will the author be held liable for any damages //% arising from the use of this software. //% Permission is granted to anyone to use this software for any purpose, //% including commercial applications, and to alter it and redistribute it //% freely, subject to the following restrictions: //% 1. The origin of this software must not be misrepresented; you must not //% claim that you wrote the original software. If you use this software //% in a product, an acknowledgment in the product documentation would be //% appreciated but is not required. //% 2. Altered source versions must be plainly marked as such, and must not be //% misrepresented as being the original software. //% 3. This notice may not be removed or altered from any source distribution. //% Mark Adler madler@alumni.caltech.edu //% BEGIN CODE DERIVED FROM puff.{c,h} #define MAXBITS 15 #define MAXLCODES 286 #define MAXDCODES 30 #define MAXCODES (MAXLCODES + MAXDCODES) #define FIXLCODES 288 struct puff_state { unsigned char* out; unsigned long outlen; unsigned long outcnt; const unsigned char* in; unsigned long inlen; unsigned long incnt; int bitbuf; int bitcnt; jmp_buf env; }; static int puff_bits(struct puff_state* s, int need) { long val = s->bitbuf; while (s->bitcnt < need) { if (s->incnt == s->inlen) longjmp(s->env, 1); val |= (long)(s->in[s->incnt++]) << s->bitcnt; s->bitcnt += 8; } s->bitbuf = (int)(val >> need); s->bitcnt -= need; return (int)(val & ((1L << need) - 1)); } static int puff_stored(struct puff_state* s) { s->bitbuf = 0; s->bitcnt = 0; if (s->incnt + 4 > s->inlen) return 2; unsigned len = s->in[s->incnt++]; len |= s->in[s->incnt++] << 8; if (s->in[s->incnt++] != (~len & 0xff) || s->in[s->incnt++] != ((~len >> 8) & 0xff)) return -2; if (s->incnt + len > s->inlen) return 2; if (s->outcnt + len > s->outlen) return 1; for (; len--; s->outcnt++, s->incnt++) { if (s->in[s->incnt]) s->out[s->outcnt] = s->in[s->incnt]; } return 0; } struct puff_huffman { short* count; short* symbol; }; static int puff_decode(struct puff_state* s, const struct puff_huffman* h) { int first = 0; int index = 0; int bitbuf = s->bitbuf; int left = s->bitcnt; int code = first = index = 0; int len = 1; short* next = h->count + 1; while (1) { while (left--) { code |= bitbuf & 1; bitbuf >>= 1; int count = *next++; if (code - count < first) { s->bitbuf = bitbuf; s->bitcnt = (s->bitcnt - len) & 7; return h->symbol[index + (code - first)]; } index += count; first += count; first <<= 1; code <<= 1; len++; } left = (MAXBITS + 1) - len; if (left == 0) break; if (s->incnt == s->inlen) longjmp(s->env, 1); bitbuf = s->in[s->incnt++]; if (left > 8) left = 8; } return -10; } static int puff_construct(struct puff_huffman* h, const short* length, int n) { int len; for (len = 0; len <= MAXBITS; len++) h->count[len] = 0; int symbol; for (symbol = 0; symbol < n; symbol++) (h->count[length[symbol]])++; if (h->count[0] == n) return 0; int left = 1; for (len = 1; len <= MAXBITS; len++) { left <<= 1; left -= h->count[len]; if (left < 0) return left; } short offs[MAXBITS + 1]; offs[1] = 0; for (len = 1; len < MAXBITS; len++) offs[len + 1] = offs[len] + h->count[len]; for (symbol = 0; symbol < n; symbol++) if (length[symbol] != 0) h->symbol[offs[length[symbol]]++] = symbol; return left; } static int puff_codes(struct puff_state* s, const struct puff_huffman* lencode, const struct puff_huffman* distcode) { static const short lens[29] = {3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31, 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258}; static const short lext[29] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0}; static const short dists[30] = { 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193, 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145, 8193, 12289, 16385, 24577}; static const short dext[30] = {0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13}; int symbol; do { symbol = puff_decode(s, lencode); if (symbol < 0) return symbol; if (symbol < 256) { if (s->outcnt == s->outlen) return 1; if (symbol) s->out[s->outcnt] = symbol; s->outcnt++; } else if (symbol > 256) { symbol -= 257; if (symbol >= 29) return -10; int len = lens[symbol] + puff_bits(s, lext[symbol]); symbol = puff_decode(s, distcode); if (symbol < 0) return symbol; unsigned dist = dists[symbol] + puff_bits(s, dext[symbol]); if (dist > s->outcnt) return -11; if (s->outcnt + len > s->outlen) return 1; while (len--) { if (dist <= s->outcnt && s->out[s->outcnt - dist]) s->out[s->outcnt] = s->out[s->outcnt - dist]; s->outcnt++; } } } while (symbol != 256); return 0; } static int puff_fixed(struct puff_state* s) { static int virgin = 1; static short lencnt[MAXBITS + 1], lensym[FIXLCODES]; static short distcnt[MAXBITS + 1], distsym[MAXDCODES]; static struct puff_huffman lencode, distcode; if (virgin) { lencode.count = lencnt; lencode.symbol = lensym; distcode.count = distcnt; distcode.symbol = distsym; short lengths[FIXLCODES]; int symbol; for (symbol = 0; symbol < 144; symbol++) lengths[symbol] = 8; for (; symbol < 256; symbol++) lengths[symbol] = 9; for (; symbol < 280; symbol++) lengths[symbol] = 7; for (; symbol < FIXLCODES; symbol++) lengths[symbol] = 8; puff_construct(&lencode, lengths, FIXLCODES); for (symbol = 0; symbol < MAXDCODES; symbol++) lengths[symbol] = 5; puff_construct(&distcode, lengths, MAXDCODES); virgin = 0; } return puff_codes(s, &lencode, &distcode); } static int puff_dynamic(struct puff_state* s) { static const short order[19] = {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15}; int nlen = puff_bits(s, 5) + 257; int ndist = puff_bits(s, 5) + 1; int ncode = puff_bits(s, 4) + 4; if (nlen > MAXLCODES || ndist > MAXDCODES) return -3; short lengths[MAXCODES]; int index; for (index = 0; index < ncode; index++) lengths[order[index]] = puff_bits(s, 3); for (; index < 19; index++) lengths[order[index]] = 0; short lencnt[MAXBITS + 1], lensym[MAXLCODES]; struct puff_huffman lencode = {lencnt, lensym}; int err = puff_construct(&lencode, lengths, 19); if (err != 0) return -4; index = 0; while (index < nlen + ndist) { int symbol; int len; symbol = puff_decode(s, &lencode); if (symbol < 0) return symbol; if (symbol < 16) lengths[index++] = symbol; else { len = 0; if (symbol == 16) { if (index == 0) return -5; len = lengths[index - 1]; symbol = 3 + puff_bits(s, 2); } else if (symbol == 17) symbol = 3 + puff_bits(s, 3); else symbol = 11 + puff_bits(s, 7); if (index + symbol > nlen + ndist) return -6; while (symbol--) lengths[index++] = len; } } if (lengths[256] == 0) return -9; err = puff_construct(&lencode, lengths, nlen); if (err && (err < 0 || nlen != lencode.count[0] + lencode.count[1])) return -7; short distcnt[MAXBITS + 1], distsym[MAXDCODES]; struct puff_huffman distcode = {distcnt, distsym}; err = puff_construct(&distcode, lengths + nlen, ndist); if (err && (err < 0 || ndist != distcode.count[0] + distcode.count[1])) return -8; return puff_codes(s, &lencode, &distcode); } static int puff(unsigned char* dest, unsigned long* destlen, const unsigned char* source, unsigned long sourcelen) { struct puff_state s = { .out = dest, .outlen = *destlen, .outcnt = 0, .in = source, .inlen = sourcelen, .incnt = 0, .bitbuf = 0, .bitcnt = 0, }; int err; if (setjmp(s.env) != 0) err = 2; else { int last; do { last = puff_bits(&s, 1); int type = puff_bits(&s, 2); err = type == 0 ? puff_stored(&s) : (type == 1 ? puff_fixed(&s) : (type == 2 ? puff_dynamic(&s) : -1)); if (err != 0) break; } while (!last); } *destlen = s.outcnt; return err; } //% END CODE DERIVED FROM puff.{c,h} #define ZLIB_HEADER_WIDTH 2 static int puff_zlib_to_file(const unsigned char* source, unsigned long sourcelen, int dest_fd) { if (sourcelen < ZLIB_HEADER_WIDTH) return 0; source += ZLIB_HEADER_WIDTH; sourcelen -= ZLIB_HEADER_WIDTH; const unsigned long max_destlen = 132 << 20; void* ret = mmap(0, max_destlen, PROT_WRITE | PROT_READ, MAP_PRIVATE | MAP_ANON, -1, 0); if (ret == MAP_FAILED) return -1; unsigned char* dest = (unsigned char*)ret; unsigned long destlen = max_destlen; int err = puff(dest, &destlen, source, sourcelen); if (err) { munmap(dest, max_destlen); errno = -err; return -1; } if (write(dest_fd, dest, destlen) != (ssize_t)destlen) { munmap(dest, max_destlen); return -1; } return munmap(dest, max_destlen); } static int setup_loop_device(unsigned char* data, unsigned long size, const char* loopname, int* loopfd_p) { int err = 0, loopfd = -1; int memfd = syscall(__NR_memfd_create, "syzkaller", 0); if (memfd == -1) { err = errno; goto error; } if (puff_zlib_to_file(data, size, memfd)) { err = errno; goto error_close_memfd; } loopfd = open(loopname, O_RDWR); if (loopfd == -1) { err = errno; goto error_close_memfd; } if (ioctl(loopfd, LOOP_SET_FD, memfd)) { if (errno != EBUSY) { err = errno; goto error_close_loop; } ioctl(loopfd, LOOP_CLR_FD, 0); usleep(1000); if (ioctl(loopfd, LOOP_SET_FD, memfd)) { err = errno; goto error_close_loop; } } close(memfd); *loopfd_p = loopfd; return 0; error_close_loop: close(loopfd); error_close_memfd: close(memfd); error: errno = err; return -1; } static void reset_loop_device(const char* loopname) { int loopfd = open(loopname, O_RDWR); if (loopfd == -1) { return; } if (ioctl(loopfd, LOOP_CLR_FD, 0)) { } close(loopfd); } static long syz_mount_image(volatile long fsarg, volatile long dir, volatile long flags, volatile long optsarg, volatile long change_dir, volatile unsigned long size, volatile long image) { unsigned char* data = (unsigned char*)image; int res = -1, err = 0, need_loop_device = !!size; char* mount_opts = (char*)optsarg; char* target = (char*)dir; char* fs = (char*)fsarg; char* source = NULL; char loopname[64]; if (need_loop_device) { int loopfd; memset(loopname, 0, sizeof(loopname)); snprintf(loopname, sizeof(loopname), "/dev/loop%llu", procid); if (setup_loop_device(data, size, loopname, &loopfd) == -1) return -1; close(loopfd); source = loopname; } mkdir(target, 0777); char opts[256]; memset(opts, 0, sizeof(opts)); if (strlen(mount_opts) > (sizeof(opts) - 32)) { } strncpy(opts, mount_opts, sizeof(opts) - 32); if (strcmp(fs, "iso9660") == 0) { flags |= MS_RDONLY; } else if (strncmp(fs, "ext", 3) == 0) { bool has_remount_ro = false; char* remount_ro_start = strstr(opts, "errors=remount-ro"); if (remount_ro_start != NULL) { char after = *(remount_ro_start + strlen("errors=remount-ro")); char before = remount_ro_start == opts ? '\0' : *(remount_ro_start - 1); has_remount_ro = ((before == '\0' || before == ',') && (after == '\0' || after == ',')); } if (strstr(opts, "errors=panic") || !has_remount_ro) strcat(opts, ",errors=continue"); } else if (strcmp(fs, "xfs") == 0) { strcat(opts, ",nouuid"); } res = mount(source, target, fs, flags, opts); if (res == -1) { err = errno; goto error_clear_loop; } res = open(target, O_RDONLY | O_DIRECTORY); if (res == -1) { err = errno; goto error_clear_loop; } if (change_dir) { res = chdir(target); if (res == -1) { err = errno; } } error_clear_loop: if (need_loop_device) reset_loop_device(loopname); errno = err; return res; } uint64_t r[1] = {0xffffffffffffffff}; 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); const char* reason; (void)reason; intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } memcpy((void*)0x20000180, "hfs\000", 4); memcpy((void*)0x20000100, "./file0\000", 8); memcpy( (void*)0x20001f80, "\x71\x75\x69\x65\x74\x2c\x63\x6f\x64\x65\x70\x61\x67\x65\x3d\x63\x70\x38" "\x36\x30\x2c\x69\x6f\x63\x68\x61\x72\x73\x65\x74\x3d\x63\x70\x38\x36\x31" "\x2c\x00\x80\x8f\xea\xd0\x42\xbd\x35\xdc\x78\xf7\xf0\x63\xdc\x90\x79\xc0" "\x5b\x82\x71\xe4\x1a\xee\x85\xe5\x9c\xbb\x6c\x2d\xf3\xd4\xe5\xc1\x6b\x06" "\xc7\x3f\x2e\x3b\x34\x8a\x7f\xba\x46\xe2\x86\x37\x8a\x15\xee\x51\x6b\xac" "\x8d\x48\x13\xc9\xc3\xd9\xce\xe1\xdd\xb9\x5d\x1b\xbc\xf5\x04\xe0\x65\xb3" "\x74\x9a\x1c\xbd\x84\x1e\x68\x5a\x55\x85\x98\xcf\x0d\xb1\x0b\x55\x88\x59" "\x46\xe6\x78\xd0\xa7\x18\x77\x03\x7a\x09\x00\x00\x00\x07\x00\x84\x88\x79" "\xef\x16\x04\xca\xdc\x1f\xac\xa3\xaa\x22\xa5\x76\x75\x0d\x55\x9c\x4e\x12" "\x4d\x4c\xb7\x29\x3e\x73\x93\xb7\x72\x86\xfa\x8c\x6d\xc4\x3d\x34\x23\x82" "\xe8\x4d\x6d\x3c\x29\xab\x95\xcc\x92\x3f\xbe\x25\xe1\x34\xd1\xc4\x21\x32" "\x0a\x3b\xff\xaa\x17\xfc\xd6\xb5\x17\x8e\x32\x2c\xc4\x71\x33\xb3\x81\x1e" "\x3d\x3b\xc3\x49\x98\xdc\x7e\xd0\x29\x83\x4a\xd5\x91\xd9\xd5\x6c\x41\x06" "\x3d\x8d\xe2\xd5\x0a\x23\x98\xe7\x3f\xf2\x91\x3a\x9f\xe8\xe9\x54\xa4\xe4" "\xca\x99\xce\xb5\x73\x7e\x57\x19\x3c\x5f\x47\xfd\x63\xb1\x6c\x8b\x34\xf2" "\x56\xdb\xac\x0e\x5e\xbd\x00\x90\x78\xdf\x2c\xb1\xca\x10\x51\xad\x09\x1a" "\xdb\xfe\xe5\x12\x6d\x8a\x59\xfa\x54\x38\x73\x4b\xc3\xe8\xcc\x7b\x7e\xdc" "\x10\x71\x6a\x0a\x9b\x71\x19\x52\xcd\xf9\x65\x86\xe0\x6f\xba\xce\x21\xdc" "\x04\xbd\xb4\xa1\xa2\x07\x2c\xe5\xf7\x2c\xf0", 335); *(uint64_t*)0x200020cf = -1; sprintf((char*)0x200020d7, "%020llu", (long long)-1); *(uint64_t*)0x200020eb = -1; *(uint32_t*)0x200020f3 = -1; memcpy( (void*)0x20002100, "\x78\x9c\xec\xdd\x4d\x6b\x13\x41\x1c\xc7\xf1\xdf\x6c\xd2\x26\xda\x50\xb7" "\x0f\x22\x78\xac\x16\xf4\x22\x5a\x2f\xe2\x25\x22\x79\x11\xe2\x41\xd4\x36" "\x42\x31\x54\xd4\x0a\xea\xc5\x54\x3c\x89\xe8\xdd\xbb\x6f\xc1\x17\xe1\x45" "\xf1\x0d\xe8\xc9\x93\x2f\xa0\x3d\xad\xcc\xec\x66\x93\x4d\x36\xbb\x69\x69" "\x76\x1b\xfc\x7e\x40\xbb\xd9\x9d\xd9\xf9\xcf\x3e\xfe\x27\xd0\x8e\x00\xfc" "\xb7\x6e\xb7\x7e\x7d\xb9\xfe\xc7\xfe\x33\x52\x45\x15\xe9\xfd\x4d\xc9\x93" "\x54\x97\xaa\x92\xce\xea\x5c\xfd\xc5\xce\xee\xf6\x6e\xa7\xbd\x95\xb5\xa3" "\x8a\xab\xa1\x83\x40\x46\x61\x4d\x33\x52\x66\x73\xa7\xed\x7e\xee\x25\x57" "\xdb\x7a\xae\x46\xc4\xb7\x9f\xaa\x6a\x0c\xae\xc3\x74\x04\x41\x70\xeb\x77" "\xd9\x41\xa0\x74\xee\xee\x4f\xe1\x49\xb5\xe8\xee\x74\xdb\xeb\x85\x47\x96" "\x6d\xef\x88\xf5\xba\xc7\x1c\xc7\xac\x31\xfb\xda\xd7\x4b\x2d\x96\x1d\x07" "\x00\xa0\x5c\xd1\xfb\xdf\x8b\xde\xf3\x8d\x28\x7f\xf7\x3c\x69\x3d\x7a\xed" "\x9f\xc8\xf7\xff\x51\xed\x97\x1d\xc0\xd4\x05\x99\x5b\x07\xde\xff\x6e\x94" "\x15\x18\x7b\x7e\xcf\xb8\x4d\xfd\xf1\x9e\x1b\xc2\xd9\xed\x5e\x6f\x94\x38" "\x49\xcb\x73\x43\x9f\xe7\x15\x5e\x59\x89\x04\xd3\xe4\x8d\x2a\x5d\x2c\xde" "\xa9\x47\xdb\x9d\xf6\x95\xcd\x27\x9d\x2d\x4f\x6f\xd5\x8c\x0c\x14\x5b\x8d" "\x5b\x88\xd8\x2b\x34\x27\xda\xb5\x94\xb1\x69\x86\x09\xfa\x6e\x52\x33\xca" "\x30\x2c\x6f\xce\xf6\x61\x63\x4c\xfc\x2b\x47\x6c\xf1\x30\x12\x27\xc4\x7c" "\x33\x3f\xcc\x3d\xe3\xeb\xb3\xb6\xe2\xfc\xaf\x1a\x18\x1b\xad\x0b\xd8\x1f" "\x3a\x53\x61\xfc\x57\xc7\xef\x7e\xc1\xd5\xb2\xa5\x14\x3d\x36\x9a\xcd\xa6" "\xe7\x76\xd4\xb3\xe4\x1a\x39\x9f\x3c\x53\x39\xbd\xac\xa7\x8f\x48\xd4\x3b" "\xb0\x4b\x4a\x7e\x41\xe0\xe7\xc5\xe9\x6a\x2d\x0f\xd5\x0a\x7b\x77\x2d\xb5" "\x42\x2d\xae\xb5\x92\x5a\x6b\xa3\xf7\x69\x4c\x5b\xab\x89\x5a\xb6\x37\xf1" "\xd5\x3c\x3e\xca\x69\x33\x1f\xcd\x1d\xb3\xa6\xbf\xfa\xaa\xd6\x40\xfe\xef" "\xd9\xf8\xd6\x95\x79\x67\xf6\xef\x1a\xb3\x1e\xde\x68\xee\x88\x87\xfd\x99" "\x4f\x6f\xae\xea\xf6\xe9\x8f\xbc\x39\xba\xba\xdb\x48\xae\x89\x8f\x62\x6d" "\x5c\xe8\x07\xd9\xcf\x34\x1c\xc2\x07\x3d\xd4\x0d\x2d\x3e\x7f\xf5\xfa\x71" "\xa5\xd3\x69\x3f\xb3\x0b\x0f\x52\x16\x9e\x36\xe2\x35\x73\xef\xa4\xd4\x32" "\x25\x2f\xa8\xdb\x5f\x53\x53\xe0\x8c\x14\xee\x3d\x03\x8b\x0c\xec\xf2\xb1" "\xee\xd0\x3e\x3f\x72\x0b\xdb\xbb\xac\x90\x0e\x9e\xc8\x2b\xa1\xa8\x85\xd6" "\xf7\x62\x2f\xa4\x32\x16\x4a\x7e\x3e\xa1\x10\xfd\x93\x5e\x76\x24\x28\x89" "\xcd\xbb\x4c\x38\xfe\x73\x99\x7c\x94\xef\xbb\x64\xcf\xfe\xe7\x67\xe4\xe9" "\xb9\x09\x59\xb4\xc7\xc0\xe6\xd8\xf1\x08\xa8\x9e\xa8\xbf\xec\x96\x4e\x27" "\xd3\xe8\x9c\xb1\xc1\xc2\xf8\x11\xdc\x40\x1f\x32\xc7\x5c\x17\x2e\x49\x17" "\x27\x6f\xd1\x8f\xe2\x9c\x0d\xc1\x9b\x9c\x02\xa6\xa5\x9f\xba\xcf\xf7\xff" "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xb3\xa6\x88" "\x5f\x27\x28\xbb\x8f\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00\x00\x00\x00\xcc\xba\x78\xfe\x5f\xf5\xe6\xff\xd5\x64\xf3\xff\x0e\xff" "\xe5\xef\x68\xfe\xdf\xba\x26\x98\xff\x77\xc8\xc8\xfc\xbf\x9f\x76\x64\xba" "\x12\xf3\xff\x02\xd3\xf5\x2f\x00\x00\xff\xff\xdc\x63\x82\xd6", 717); syz_mount_image(/*fs=*/0x20000180, /*dir=*/0x20000100, /*flags=MS_LAZYTIME|MS_STRICTATIME*/ 0x3000000, /*opts=*/0x20001f80, /*chdir=*/0x11, /*size=*/0x2cd, /*img=*/0x20002100); memcpy((void*)0x20000000, "blkio.bfq.io_queued_recursive\000", 30); res = syscall(__NR_openat, /*fd=*/0xffffff9c, /*file=*/0x20000000ul, /*flags=*/0x275a, /*mode=*/0); if (res != -1) r[0] = res; syscall(__NR_fdatasync, /*fd=*/r[0]); return 0; }