./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1666480410 <...> Warning: Permanently added '10.128.0.159' (ED25519) to the list of known hosts. execve("./syz-executor1666480410", ["./syz-executor1666480410"], 0x7fffdb3c7c30 /* 10 vars */) = 0 brk(NULL) = 0x55555677f000 brk(0x55555677fd00) = 0x55555677fd00 arch_prctl(ARCH_SET_FS, 0x55555677f380) = 0 set_tid_address(0x55555677f650) = 5068 set_robust_list(0x55555677f660, 24) = 0 rseq(0x55555677fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1666480410", 4096) = 28 getrandom("\x7a\x52\x61\x28\x9e\xc7\x8b\x5b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555677fd00 brk(0x5555567a0d00) = 0x5555567a0d00 brk(0x5555567a1000) = 0x5555567a1000 mprotect(0x7f299b93b000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555677f650) = 5069 ./strace-static-x86_64: Process 5069 attached [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5069] set_robust_list(0x55555677f660, 24) = 0 ./strace-static-x86_64: Process 5070 attached [pid 5068] <... clone resumed>, child_tidptr=0x55555677f650) = 5070 [pid 5070] set_robust_list(0x55555677f660, 24 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] <... set_robust_list resumed>) = 0 [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5069] <... openat resumed>) = 3 [pid 5069] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5071 attached [pid 5070] <... openat resumed>) = 3 [pid 5069] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5068] <... clone resumed>, child_tidptr=0x55555677f650) = 5071 [pid 5071] set_robust_list(0x55555677f660, 24 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] <... set_robust_list resumed>) = 0 [pid 5069] close(3 [pid 5070] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5070] close(3./strace-static-x86_64: Process 5072 attached [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5070] <... close resumed>) = 0 [pid 5069] <... close resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5073 attached [pid 5068] <... clone resumed>, child_tidptr=0x55555677f650) = 5072 [pid 5072] set_robust_list(0x55555677f660, 24 [pid 5071] <... openat resumed>) = 3 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5073] set_robust_list(0x55555677f660, 24 [pid 5072] <... set_robust_list resumed>) = 0 [pid 5071] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5076 attached ./strace-static-x86_64: Process 5075 attached [pid 5073] <... set_robust_list resumed>) = 0 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5071] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5076] set_robust_list(0x55555677f660, 24 [pid 5075] set_robust_list(0x55555677f660, 24 [pid 5073] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5071] close(3 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5073 [pid 5068] <... clone resumed>, child_tidptr=0x55555677f650) = 5076 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5075 [pid 5076] <... set_robust_list resumed>) = 0 [pid 5075] <... set_robust_list resumed>) = 0 [pid 5073] <... prctl resumed>) = 0 [pid 5071] <... close resumed>) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5073] setpgid(0, 0 [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5073] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 5077 attached [pid 5077] set_robust_list(0x55555677f660, 24) = 0 ./strace-static-x86_64: Process 5078 attached [pid 5077] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5073] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5075] <... prctl resumed>) = 0 [pid 5073] <... openat resumed>) = 3 [pid 5068] <... clone resumed>, child_tidptr=0x55555677f650) = 5078 [pid 5078] set_robust_list(0x55555677f660, 24 [pid 5077] <... prctl resumed>) = 0 [pid 5076] <... openat resumed>) = 3 [pid 5075] setpgid(0, 0 [pid 5073] write(3, "1000", 4 [pid 5072] <... openat resumed>) = 3 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5077 [pid 5078] <... set_robust_list resumed>) = 0 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5075] <... setpgid resumed>) = 0 [pid 5073] <... write resumed>) = 4 [pid 5077] setpgid(0, 0 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5073] close(3 [pid 5077] <... setpgid resumed>) = 0 [pid 5072] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5073] <... close resumed>) = 0 [pid 5078] <... openat resumed>) = 3 [pid 5077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5076] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5073] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5077] <... openat resumed>) = 3 [pid 5076] close(3 [pid 5075] <... openat resumed>) = 3 [pid 5073] <... openat resumed>) = 3 [pid 5072] close(3 [pid 5078] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5077] write(3, "1000", 4 [pid 5076] <... close resumed>) = 0 [pid 5075] write(3, "1000", 4 [pid 5073] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5072] <... close resumed>) = 0 [pid 5078] close(3 [pid 5077] <... write resumed>) = 4 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5075] <... write resumed>) = 4 [pid 5073] <... openat resumed>) = 4 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5081 attached ./strace-static-x86_64: Process 5080 attached [pid 5078] <... close resumed>) = 0 [pid 5077] close(3 [pid 5075] close(3 [pid 5073] sendfile(4, 3, [88] [pid 5081] set_robust_list(0x55555677f660, 24 [pid 5080] set_robust_list(0x55555677f660, 24 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] <... close resumed>) = 0 [pid 5075] <... close resumed>) = 0 ./strace-static-x86_64: Process 5082 attached [pid 5081] <... set_robust_list resumed>) = 0 [pid 5080] <... set_robust_list resumed>) = 0 [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5080] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5077] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5081 [pid 5075] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5082] set_robust_list(0x55555677f660, 24 [pid 5081] <... prctl resumed>) = 0 [pid 5080] <... prctl resumed>) = 0 [pid 5082] <... set_robust_list resumed>) = 0 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5082 [pid 5077] <... openat resumed>) = 3 [pid 5075] <... openat resumed>) = 3 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5080 [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5081] setpgid(0, 0 [pid 5080] setpgid(0, 0 [pid 5077] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5075] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5077] <... openat resumed>) = 4 [pid 5075] <... openat resumed>) = 4 [pid 5077] sendfile(4, 3, [88] [pid 5075] sendfile(4, 3, [88] [pid 5082] <... prctl resumed>) = 0 [pid 5081] <... setpgid resumed>) = 0 [pid 5080] <... setpgid resumed>) = 0 [pid 5082] setpgid(0, 0 [pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5082] <... setpgid resumed>) = 0 [pid 5081] <... openat resumed>) = 3 [pid 5080] <... openat resumed>) = 3 [pid 5080] write(3, "1000", 4 [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5081] write(3, "1000", 4 [pid 5080] <... write resumed>) = 4 [pid 5081] <... write resumed>) = 4 [pid 5080] close(3 [pid 5081] close(3 [pid 5082] <... openat resumed>) = 3 [pid 5081] <... close resumed>) = 0 [pid 5080] <... close resumed>) = 0 [pid 5081] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5080] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5082] write(3, "1000", 4) = 4 [pid 5082] close(3 [pid 5081] <... openat resumed>) = 3 [pid 5080] <... openat resumed>) = 3 [pid 5082] <... close resumed>) = 0 [pid 5081] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5080] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5082] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5081] <... openat resumed>) = 4 [pid 5080] <... openat resumed>) = 4 [pid 5082] <... openat resumed>) = 3 [pid 5081] sendfile(4, 3, [88] [pid 5080] sendfile(4, 3, [88] [pid 5082] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 57.885840][ T5075] syz-executor166 (5075): drop_caches: 1 [ 57.907298][ T5081] syz-executor166 (5081): drop_caches: 1 [ 57.914875][ T5073] syz-executor166 (5073): drop_caches: 1 [ 57.917551][ T5080] syz-executor166 (5080): drop_caches: 1 [ 57.930870][ T5077] syz-executor166 (5077): drop_caches: 1 [ 57.941461][ T5082] syz-executor166 (5082): drop_caches: 1 [pid 5082] sendfile(4, 3, [88] [pid 5073] <... sendfile resumed> => [103], 15) = 15 [pid 5081] <... sendfile resumed> => [103], 15) = 15 [pid 5081] memfd_create("syzkaller", 0 [pid 5075] <... sendfile resumed> => [103], 15) = 15 [pid 5073] memfd_create("syzkaller", 0 [pid 5077] <... sendfile resumed> => [103], 15) = 15 [pid 5081] <... memfd_create resumed>) = 5 [pid 5081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5075] memfd_create("syzkaller", 0 [pid 5073] <... memfd_create resumed>) = 5 [pid 5075] <... memfd_create resumed>) = 5 [pid 5073] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5077] memfd_create("syzkaller", 0 [pid 5075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5073] <... mmap resumed>) = 0x7f299346a000 [ 57.997243][ T5077] syz-executor166 (5077): drop_caches: 1 [ 57.997347][ T5075] syz-executor166 (5075): drop_caches: 1 [ 58.020636][ T5073] syz-executor166 (5073): drop_caches: 1 [ 58.026844][ T5081] syz-executor166 (5081): drop_caches: 1 [pid 5077] <... memfd_create resumed>) = 5 [pid 5075] <... mmap resumed>) = 0x7f299346a000 [pid 5082] <... sendfile resumed> => [103], 15) = 15 [pid 5082] memfd_create("syzkaller", 0) = 5 [pid 5082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5080] <... sendfile resumed> => [103], 15) = 15 [pid 5077] <... mmap resumed>) = 0x7f299346a000 [pid 5080] memfd_create("syzkaller", 0) = 5 [pid 5080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 58.058139][ T5080] syz-executor166 (5080): drop_caches: 1 [ 58.067805][ T5082] syz-executor166 (5082): drop_caches: 1 [pid 5081] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5073] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5075] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5082] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5077] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5080] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5081] <... write resumed>) = 2097152 [pid 5081] munmap(0x7f299346a000, 138412032) = 0 [pid 5077] <... write resumed>) = 2097152 [pid 5073] <... write resumed>) = 2097152 [pid 5081] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5077] munmap(0x7f299346a000, 138412032 [pid 5073] munmap(0x7f299346a000, 138412032 [pid 5081] <... openat resumed>) = 6 [pid 5081] ioctl(6, LOOP_SET_FD, 5 [pid 5073] <... munmap resumed>) = 0 [pid 5073] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5073] ioctl(6, LOOP_SET_FD, 5 [pid 5075] <... write resumed>) = 2097152 [pid 5082] <... write resumed>) = 2097152 [pid 5081] <... ioctl resumed>) = 0 [pid 5080] <... write resumed>) = 2097152 [pid 5077] <... munmap resumed>) = 0 [pid 5073] <... ioctl resumed>) = 0 [pid 5082] munmap(0x7f299346a000, 138412032 [pid 5081] close(5 [pid 5080] munmap(0x7f299346a000, 138412032 [pid 5077] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5075] munmap(0x7f299346a000, 138412032 [pid 5073] close(5 [pid 5081] <... close resumed>) = 0 [pid 5077] <... openat resumed>) = 6 [pid 5073] <... close resumed>) = 0 [pid 5081] mkdir("./file0", 0777 [pid 5073] mkdir("./file0", 0777 [pid 5077] ioctl(6, LOOP_SET_FD, 5 [pid 5080] <... munmap resumed>) = 0 [pid 5082] <... munmap resumed>) = 0 [pid 5081] <... mkdir resumed>) = 0 [pid 5077] <... ioctl resumed>) = 0 [pid 5080] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5075] <... munmap resumed>) = 0 [pid 5073] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5082] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5081] mount("/dev/loop4", "./file0", "ntfs", 0, "" [pid 5080] <... openat resumed>) = 6 [pid 5077] close(5 [pid 5075] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5073] mount("/dev/loop1", "./file0", "ntfs", 0, "" [pid 5077] <... close resumed>) = 0 [pid 5075] <... openat resumed>) = 6 [pid 5075] ioctl(6, LOOP_SET_FD, 5 [ 58.186985][ T5081] loop4: detected capacity change from 0 to 4096 [ 58.198372][ T5073] loop1: detected capacity change from 0 to 4096 [ 58.215754][ T5077] loop2: detected capacity change from 0 to 4096 [pid 5077] mkdir("./file0", 0777 [pid 5080] ioctl(6, LOOP_SET_FD, 5 [pid 5077] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5077] mount("/dev/loop2", "./file0", "ntfs", 0, "" [pid 5082] <... openat resumed>) = 6 [pid 5082] ioctl(6, LOOP_SET_FD, 5) = 0 [pid 5082] close(5 [pid 5080] <... ioctl resumed>) = 0 [pid 5082] <... close resumed>) = 0 [pid 5075] <... ioctl resumed>) = 0 [pid 5082] mkdir("./file0", 0777 [pid 5075] close(5 [pid 5082] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5075] <... close resumed>) = 0 [pid 5082] mount("/dev/loop5", "./file0", "ntfs", 0, "" [pid 5080] close(5 [pid 5075] mkdir("./file0", 0777 [pid 5080] <... close resumed>) = 0 [pid 5075] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5075] mount("/dev/loop0", "./file0", "ntfs", 0, "" [pid 5080] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 58.238128][ T5075] loop0: detected capacity change from 0 to 4096 [ 58.240335][ T5080] loop3: detected capacity change from 0 to 4096 [ 58.253608][ T5082] loop5: detected capacity change from 0 to 4096 [pid 5080] mount("/dev/loop3", "./file0", "ntfs", 0, "" [pid 5077] <... mount resumed>) = 0 [pid 5077] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 5 [pid 5077] chdir("./file0") = 0 [pid 5077] ioctl(6, LOOP_CLR_FD) = 0 [pid 5081] <... mount resumed>) = 0 [ 58.300815][ T5077] ntfs: volume version 3.1. [ 58.311209][ T5081] ntfs: volume version 3.1. [pid 5077] close(6) = 0 [pid 5081] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 5 [pid 5077] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5081] chdir("./file0") = 0 [pid 5081] ioctl(6, LOOP_CLR_FD [pid 5077] <... open resumed>) = 6 [pid 5075] <... mount resumed>) = 0 [pid 5081] <... ioctl resumed>) = 0 [pid 5077] pwritev(6, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5081] close(6) = 0 [pid 5080] <... mount resumed>) = 0 [pid 5075] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 5 [pid 5080] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5075] chdir("./file0" [pid 5081] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5075] <... chdir resumed>) = 0 [pid 5080] <... openat resumed>) = 5 [pid 5075] ioctl(6, LOOP_CLR_FD [pid 5080] chdir("./file0" [pid 5075] <... ioctl resumed>) = 0 [pid 5080] <... chdir resumed>) = 0 [pid 5081] <... open resumed>) = 6 [pid 5080] ioctl(6, LOOP_CLR_FD [pid 5075] close(6 [pid 5081] pwritev(6, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5080] <... ioctl resumed>) = 0 [pid 5075] <... close resumed>) = 0 [pid 5082] <... mount resumed>) = 0 [pid 5081] <... pwritev resumed>) = 103 [pid 5080] close(6 [pid 5077] <... pwritev resumed>) = 103 [pid 5075] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5073] <... mount resumed>) = 0 [pid 5081] exit_group(0 [pid 5080] <... close resumed>) = 0 [pid 5081] <... exit_group resumed>) = ? [ 58.352032][ T5075] ntfs: volume version 3.1. [ 58.358749][ T5073] ntfs: volume version 3.1. [ 58.364674][ T5080] ntfs: volume version 3.1. [ 58.369828][ T5082] ntfs: volume version 3.1. [pid 5080] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5073] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5077] exit_group(0 [pid 5082] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5081] +++ exited with 0 +++ [pid 5080] <... open resumed>) = 6 [pid 5075] <... open resumed>) = 6 [pid 5073] <... openat resumed>) = 5 [pid 5082] <... openat resumed>) = 5 [pid 5080] pwritev(6, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5073] chdir("./file0" [pid 5082] chdir("./file0" [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5081, si_uid=0, si_status=0, si_utime=0, si_stime=26 /* 0.26 s */} --- [pid 5073] <... chdir resumed>) = 0 [pid 5082] <... chdir resumed>) = 0 [pid 5076] restart_syscall(<... resuming interrupted clone ...> [pid 5073] ioctl(6, LOOP_CLR_FD [pid 5082] ioctl(6, LOOP_CLR_FD [pid 5077] <... exit_group resumed>) = ? [pid 5076] <... restart_syscall resumed>) = 0 [pid 5075] pwritev(6, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5073] <... ioctl resumed>) = 0 [pid 5082] <... ioctl resumed>) = 0 [pid 5073] close(6 [pid 5082] close(6 [pid 5073] <... close resumed>) = 0 [pid 5082] <... close resumed>) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5073] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5082] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5076] <... openat resumed>) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD) = 0 [pid 5076] close(3 [pid 5077] +++ exited with 0 +++ [pid 5076] <... close resumed>) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5082] <... open resumed>) = 6 [pid 5073] <... open resumed>) = 6 [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5077, si_uid=0, si_status=0, si_utime=0, si_stime=25 /* 0.25 s */} --- [pid 5080] <... pwritev resumed>) = 103 ./strace-static-x86_64: Process 5084 attached [pid 5082] pwritev(6, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5075] <... pwritev resumed>) = 103 [pid 5071] restart_syscall(<... resuming interrupted clone ...> [pid 5080] exit_group(0 [pid 5071] <... restart_syscall resumed>) = 0 [pid 5080] <... exit_group resumed>) = ? [pid 5075] exit_group(0 [pid 5084] set_robust_list(0x55555677f660, 24 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5084 [pid 5073] pwritev(6, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5071] ioctl(3, LOOP_CLR_FD) = 0 [pid 5080] +++ exited with 0 +++ [pid 5075] <... exit_group resumed>) = ? [pid 5071] close(3 [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5080, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} --- [pid 5071] <... close resumed>) = 0 [pid 5072] restart_syscall(<... resuming interrupted clone ...> [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5085 attached [pid 5072] <... restart_syscall resumed>) = 0 [pid 5085] set_robust_list(0x55555677f660, 24 [pid 5084] <... set_robust_list resumed>) = 0 [pid 5082] <... pwritev resumed>) = 103 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5085 [pid 5085] <... set_robust_list resumed>) = 0 [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5082] exit_group(0 [pid 5084] <... prctl resumed>) = 0 [pid 5082] <... exit_group resumed>) = ? [pid 5085] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5084] setpgid(0, 0 [pid 5075] +++ exited with 0 +++ [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5073] <... pwritev resumed>) = 103 [pid 5085] <... prctl resumed>) = 0 [pid 5084] <... setpgid resumed>) = 0 [pid 5073] exit_group(0 [pid 5072] <... openat resumed>) = 3 [pid 5085] setpgid(0, 0 [pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5082] +++ exited with 0 +++ [pid 5073] <... exit_group resumed>) = ? [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5085] <... setpgid resumed>) = 0 [pid 5084] <... openat resumed>) = 3 [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5082, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} --- [pid 5072] <... ioctl resumed>) = 0 [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5075, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- [pid 5084] write(3, "1000", 4 [pid 5072] close(3 [pid 5069] restart_syscall(<... resuming interrupted clone ...> [pid 5085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5084] <... write resumed>) = 4 [pid 5072] <... close resumed>) = 0 [pid 5069] <... restart_syscall resumed>) = 0 [pid 5084] close(3 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5085] <... openat resumed>) = 3 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5085] write(3, "1000", 4 [pid 5084] <... close resumed>) = 0 [pid 5078] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5086 attached [pid 5085] <... write resumed>) = 4 [pid 5084] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5073] +++ exited with 0 +++ [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5086 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5086] set_robust_list(0x55555677f660, 24 [pid 5085] close(3 [pid 5084] <... openat resumed>) = 3 [pid 5078] <... ioctl resumed>) = 0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5073, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- [pid 5069] <... openat resumed>) = 3 [pid 5086] <... set_robust_list resumed>) = 0 [pid 5085] <... close resumed>) = 0 [pid 5084] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5078] close(3 [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5086] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5085] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5084] <... openat resumed>) = 4 [pid 5078] <... close resumed>) = 0 [pid 5069] <... ioctl resumed>) = 0 [pid 5086] <... prctl resumed>) = 0 [pid 5085] <... openat resumed>) = 3 [pid 5084] sendfile(4, 3, [88] [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5069] close(3 [pid 5086] setpgid(0, 0 [pid 5085] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5070] <... openat resumed>) = 3 [pid 5069] <... close resumed>) = 0 [pid 5086] <... setpgid resumed>) = 0 [pid 5085] <... openat resumed>) = 4 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5088 attached [pid 5086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5085] sendfile(4, 3, [88] [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5087 [pid 5070] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5087 attached ) = 0 [pid 5087] set_robust_list(0x55555677f660, 24) = 0 [pid 5086] <... openat resumed>) = 3 [pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5086] write(3, "1000", 4 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5088 [pid 5086] <... write resumed>) = 4 [pid 5086] close(3 [pid 5087] <... prctl resumed>) = 0 [pid 5087] setpgid(0, 0) = 0 [pid 5086] <... close resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5086] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5070] close(3 [pid 5088] set_robust_list(0x55555677f660, 24 [pid 5087] <... openat resumed>) = 3 [pid 5086] <... openat resumed>) = 3 [pid 5070] <... close resumed>) = 0 [pid 5086] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5087] write(3, "1000", 4 [pid 5086] <... openat resumed>) = 4 [pid 5088] <... set_robust_list resumed>) = 0 [pid 5087] <... write resumed>) = 4 [pid 5086] sendfile(4, 3, [88] [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5089 attached [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5087] close(3) = 0 [pid 5087] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5087] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5087] sendfile(4, 3, [88] [pid 5089] set_robust_list(0x55555677f660, 24 [pid 5088] <... prctl resumed>) = 0 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5089 [pid 5089] <... set_robust_list resumed>) = 0 [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5088] setpgid(0, 0 [pid 5089] <... prctl resumed>) = 0 [pid 5088] <... setpgid resumed>) = 0 [pid 5089] setpgid(0, 0) = 0 [pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5088] <... openat resumed>) = 3 [pid 5089] <... openat resumed>) = 3 [pid 5089] write(3, "1000", 4 [pid 5088] write(3, "1000", 4 [pid 5089] <... write resumed>) = 4 [pid 5088] <... write resumed>) = 4 [pid 5089] close(3 [pid 5088] close(3 [pid 5089] <... close resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5089] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5088] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5089] <... openat resumed>) = 3 [pid 5088] <... openat resumed>) = 3 [pid 5088] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5089] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5088] <... openat resumed>) = 4 [pid 5088] sendfile(4, 3, [88] [pid 5089] <... openat resumed>) = 4 [ 58.722755][ T5086] syz-executor166 (5086): drop_caches: 1 [ 58.728924][ T5085] syz-executor166 (5085): drop_caches: 1 [ 58.729523][ T5084] syz-executor166 (5084): drop_caches: 1 [ 58.741302][ T5087] syz-executor166 (5087): drop_caches: 1 [ 58.781533][ T5088] syz-executor166 (5088): drop_caches: 1 [ 58.802612][ T5089] syz-executor166 (5089): drop_caches: 1 [ 58.924043][ T5085] syz-executor166 (5085): drop_caches: 1 [ 58.947481][ T5084] syz-executor166 (5084): drop_caches: 1 [ 58.950871][ T5088] syz-executor166 (5088): drop_caches: 1 [ 58.962694][ T5087] syz-executor166 (5087): drop_caches: 1 [ 58.965698][ T5086] syz-executor166 (5086): drop_caches: 1 [pid 5089] sendfile(4, 3, [88] [pid 5085] <... sendfile resumed> => [103], 15) = 15 [pid 5086] <... sendfile resumed> => [103], 15) = 15 [pid 5085] memfd_create("syzkaller", 0) = 5 [pid 5085] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5088] <... sendfile resumed> => [103], 15) = 15 [pid 5087] <... sendfile resumed> => [103], 15) = 15 [pid 5084] <... sendfile resumed> => [103], 15) = 15 [pid 5089] <... sendfile resumed> => [103], 15) = 15 [pid 5088] memfd_create("syzkaller", 0 [pid 5087] memfd_create("syzkaller", 0 [pid 5086] memfd_create("syzkaller", 0 [pid 5089] memfd_create("syzkaller", 0 [pid 5088] <... memfd_create resumed>) = 5 [pid 5087] <... memfd_create resumed>) = 5 [pid 5086] <... memfd_create resumed>) = 5 [pid 5084] memfd_create("syzkaller", 0 [pid 5087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5087] <... mmap resumed>) = 0x7f299346a000 [pid 5088] <... mmap resumed>) = 0x7f299346a000 [pid 5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5084] <... memfd_create resumed>) = 5 [pid 5089] <... memfd_create resumed>) = 5 [pid 5085] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 58.972095][ T5089] syz-executor166 (5089): drop_caches: 1 [pid 5088] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5087] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5084] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5085] <... write resumed>) = 2097152 [pid 5086] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5085] munmap(0x7f299346a000, 138412032) = 0 [pid 5089] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5087] <... write resumed>) = 2097152 [pid 5085] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5088] <... write resumed>) = 2097152 [pid 5087] munmap(0x7f299346a000, 138412032 [pid 5085] <... openat resumed>) = 6 [pid 5085] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5085] ioctl(6, LOOP_CLR_FD) = 0 [pid 5085] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5085] close(6 [pid 5089] <... write resumed>) = 2097152 [pid 5088] munmap(0x7f299346a000, 138412032 [pid 5087] <... munmap resumed>) = 0 [pid 5085] <... close resumed>) = 0 [pid 5085] close(5 [pid 5086] <... write resumed>) = 2097152 [pid 5086] munmap(0x7f299346a000, 138412032 [pid 5089] munmap(0x7f299346a000, 138412032 [pid 5088] <... munmap resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5086] <... munmap resumed>) = 0 [pid 5084] <... write resumed>) = 2097152 [pid 5087] <... openat resumed>) = 6 [pid 5086] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5086] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5086] ioctl(6, LOOP_CLR_FD) = 0 [pid 5089] <... munmap resumed>) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5087] ioctl(6, LOOP_SET_FD, 5 [pid 5084] munmap(0x7f299346a000, 138412032 [pid 5086] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5086] close(6) = 0 [pid 5086] close(5 [pid 5087] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5088] <... openat resumed>) = 6 [pid 5087] ioctl(6, LOOP_CLR_FD [pid 5084] <... munmap resumed>) = 0 [pid 5088] ioctl(6, LOOP_SET_FD, 5 [pid 5087] <... ioctl resumed>) = 0 [pid 5088] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] ioctl(6, LOOP_CLR_FD) = 0 [pid 5089] <... openat resumed>) = 6 [pid 5089] ioctl(6, LOOP_SET_FD, 5 [pid 5084] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5087] ioctl(6, LOOP_SET_FD, 5 [pid 5089] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5087] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] ioctl(6, LOOP_CLR_FD [pid 5087] close(6 [pid 5084] <... openat resumed>) = 6 [pid 5089] <... ioctl resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5084] ioctl(6, LOOP_SET_FD, 5 [pid 5088] ioctl(6, LOOP_SET_FD, 5 [pid 5087] close(5 [pid 5085] <... close resumed>) = 0 [pid 5084] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5084] ioctl(6, LOOP_CLR_FD [pid 5085] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5088] close(6 [pid 5086] <... close resumed>) = 0 [pid 5085] <... open resumed>) = 5 [pid 5084] <... ioctl resumed>) = 0 [pid 5088] <... close resumed>) = 0 [pid 5088] close(5 [pid 5086] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5089] ioctl(6, LOOP_SET_FD, 5 [pid 5085] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5089] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5084] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5084] close(6) = 0 [pid 5089] close(6 [pid 5088] <... close resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5084] close(5 [pid 5086] <... open resumed>) = 5 [pid 5086] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5089] <... close resumed>) = 0 [pid 5087] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5089] close(5 [pid 5087] <... open resumed>) = 5 [pid 5087] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5086] <... pwritev resumed>) = 103 [pid 5084] <... close resumed>) = 0 [pid 5087] exit_group(0 [pid 5086] exit_group(0 [pid 5085] <... pwritev resumed>) = 103 [pid 5087] <... exit_group resumed>) = ? [pid 5086] <... exit_group resumed>) = ? [pid 5089] <... close resumed>) = 0 [pid 5087] +++ exited with 0 +++ [pid 5086] +++ exited with 0 +++ [pid 5085] exit_group(0 [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5087, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} --- [pid 5089] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5088] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5085] <... exit_group resumed>) = ? [pid 5084] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5085] +++ exited with 0 +++ [pid 5089] <... open resumed>) = 5 [pid 5088] <... open resumed>) = 5 [pid 5084] <... open resumed>) = 5 [pid 5072] <... openat resumed>) = 3 [pid 5088] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5084] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5085, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 5089] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5072] <... ioctl resumed>) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5078] <... openat resumed>) = 3 [pid 5072] close(3 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5072] <... close resumed>) = 0 [pid 5071] <... openat resumed>) = 3 [pid 5078] <... ioctl resumed>) = 0 [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5078] close(3 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 5092 attached [pid 5078] <... close resumed>) = 0 [pid 5071] close(3 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] <... close resumed>) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5093 attached [pid 5092] set_robust_list(0x55555677f660, 24 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5092 [pid 5093] set_robust_list(0x55555677f660, 24 [pid 5092] <... set_robust_list resumed>) = 0 [pid 5093] <... set_robust_list resumed>) = 0 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5092] <... prctl resumed>) = 0 [pid 5092] setpgid(0, 0) = 0 [pid 5093] <... prctl resumed>) = 0 [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5093] setpgid(0, 0 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5093 [pid 5092] <... openat resumed>) = 3 [pid 5093] <... setpgid resumed>) = 0 [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5092] write(3, "1000", 4./strace-static-x86_64: Process 5094 attached [pid 5093] <... openat resumed>) = 3 [pid 5092] <... write resumed>) = 4 [pid 5093] write(3, "1000", 4 [pid 5092] close(3 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5094 [pid 5094] set_robust_list(0x55555677f660, 24 [pid 5093] <... write resumed>) = 4 [pid 5092] <... close resumed>) = 0 [pid 5094] <... set_robust_list resumed>) = 0 [pid 5093] close(3 [pid 5092] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5093] <... close resumed>) = 0 [pid 5089] <... pwritev resumed>) = 103 [pid 5088] <... pwritev resumed>) = 103 [pid 5084] <... pwritev resumed>) = 103 [pid 5093] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5092] <... openat resumed>) = 3 [pid 5089] exit_group(0 [pid 5094] <... prctl resumed>) = 0 [pid 5093] <... openat resumed>) = 3 [pid 5092] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5089] <... exit_group resumed>) = ? [pid 5088] exit_group(0 [pid 5084] exit_group(0 [pid 5094] setpgid(0, 0 [pid 5092] <... openat resumed>) = 4 [pid 5094] <... setpgid resumed>) = 0 [pid 5093] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5092] sendfile(4, 3, [88] [pid 5089] +++ exited with 0 +++ [pid 5088] <... exit_group resumed>) = ? [pid 5084] <... exit_group resumed>) = ? [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5093] <... openat resumed>) = 4 [pid 5084] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5089, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5093] sendfile(4, 3, [88] [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5094] <... openat resumed>) = 3 [pid 5088] +++ exited with 0 +++ [pid 5076] restart_syscall(<... resuming interrupted clone ...> [pid 5094] write(3, "1000", 4 [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5088, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 5094] <... write resumed>) = 4 [pid 5094] close(3 [pid 5076] <... restart_syscall resumed>) = 0 [pid 5094] <... close resumed>) = 0 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5094] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5069] <... openat resumed>) = 3 [pid 5094] <... openat resumed>) = 3 [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5094] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5069] <... ioctl resumed>) = 0 [pid 5094] <... openat resumed>) = 4 [pid 5069] close(3 [pid 5094] sendfile(4, 3, [88] [pid 5076] <... openat resumed>) = 3 [pid 5070] <... openat resumed>) = 3 [pid 5069] <... close resumed>) = 0 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5076] <... ioctl resumed>) = 0 [pid 5070] <... ioctl resumed>) = 0 [pid 5076] close(3 [pid 5070] close(3./strace-static-x86_64: Process 5095 attached [pid 5076] <... close resumed>) = 0 [pid 5070] <... close resumed>) = 0 [pid 5095] set_robust_list(0x55555677f660, 24 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5095] <... set_robust_list resumed>) = 0 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5095 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5096 ./strace-static-x86_64: Process 5096 attached [pid 5095] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5096] set_robust_list(0x55555677f660, 24 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5097 ./strace-static-x86_64: Process 5097 attached [pid 5095] <... prctl resumed>) = 0 [pid 5097] set_robust_list(0x55555677f660, 24 [pid 5096] <... set_robust_list resumed>) = 0 [pid 5095] setpgid(0, 0) = 0 [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5096] setpgid(0, 0 [pid 5097] <... set_robust_list resumed>) = 0 [pid 5097] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5096] <... setpgid resumed>) = 0 [pid 5095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5097] <... prctl resumed>) = 0 [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5096] write(3, "1000", 4) = 4 [pid 5096] close(3) = 0 [pid 5096] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5096] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5096] sendfile(4, 3, [88] [pid 5097] setpgid(0, 0 [pid 5095] <... openat resumed>) = 3 [pid 5097] <... setpgid resumed>) = 0 [pid 5097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5095] write(3, "1000", 4 [pid 5097] <... openat resumed>) = 3 [pid 5095] <... write resumed>) = 4 [pid 5097] write(3, "1000", 4 [pid 5095] close(3 [pid 5097] <... write resumed>) = 4 [pid 5095] <... close resumed>) = 0 [pid 5097] close(3) = 0 [pid 5097] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5095] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5097] <... openat resumed>) = 3 [pid 5095] <... openat resumed>) = 3 [pid 5097] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5095] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5097] <... openat resumed>) = 4 [pid 5095] <... openat resumed>) = 4 [pid 5097] sendfile(4, 3, [88] [ 59.500360][ T5094] syz-executor166 (5094): drop_caches: 1 [ 59.516556][ T5093] syz-executor166 (5093): drop_caches: 1 [ 59.526818][ T5092] syz-executor166 (5092): drop_caches: 1 [ 59.590672][ T5096] syz-executor166 (5096): drop_caches: 1 [ 59.634811][ T5094] syz-executor166 (5094): drop_caches: 1 [ 59.656197][ T5097] syz-executor166 (5097): drop_caches: 1 [ 59.673557][ T5095] syz-executor166 (5095): drop_caches: 1 [pid 5095] sendfile(4, 3, [88] [pid 5094] <... sendfile resumed> => [103], 15) = 15 [pid 5094] memfd_create("syzkaller", 0) = 5 [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 59.687727][ T5093] syz-executor166 (5093): drop_caches: 1 [ 59.703607][ T5092] syz-executor166 (5092): drop_caches: 1 [pid 5092] <... sendfile resumed> => [103], 15) = 15 [pid 5093] <... sendfile resumed> => [103], 15) = 15 [pid 5093] memfd_create("syzkaller", 0) = 5 [pid 5092] memfd_create("syzkaller", 0 [pid 5096] <... sendfile resumed> => [103], 15) = 15 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5092] <... memfd_create resumed>) = 5 [pid 5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5094] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5093] <... mmap resumed>) = 0x7f299346a000 [pid 5096] memfd_create("syzkaller", 0) = 5 [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 59.730230][ T5096] syz-executor166 (5096): drop_caches: 1 [pid 5093] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5097] <... sendfile resumed> => [103], 15) = 15 [pid 5094] <... write resumed>) = 2097152 [pid 5092] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5097] memfd_create("syzkaller", 0 [ 59.785527][ T5097] syz-executor166 (5097): drop_caches: 1 [pid 5096] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5093] <... write resumed>) = 2097152 [pid 5097] <... memfd_create resumed>) = 5 [pid 5097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5093] munmap(0x7f299346a000, 138412032 [pid 5097] <... mmap resumed>) = 0x7f299346a000 [pid 5094] munmap(0x7f299346a000, 138412032 [pid 5093] <... munmap resumed>) = 0 [pid 5095] <... sendfile resumed> => [103], 15) = 15 [pid 5094] <... munmap resumed>) = 0 [pid 5093] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5094] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5093] <... openat resumed>) = 6 [pid 5095] memfd_create("syzkaller", 0) = 5 [pid 5095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5093] ioctl(6, LOOP_SET_FD, 5 [pid 5094] <... openat resumed>) = 6 [pid 5093] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5093] ioctl(6, LOOP_CLR_FD [pid 5094] ioctl(6, LOOP_SET_FD, 5 [pid 5093] <... ioctl resumed>) = 0 [pid 5097] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5094] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5094] ioctl(6, LOOP_CLR_FD) = 0 [pid 5096] <... write resumed>) = 2097152 [pid 5092] <... write resumed>) = 2097152 [pid 5094] ioctl(6, LOOP_SET_FD, 5 [pid 5093] ioctl(6, LOOP_SET_FD, 5 [pid 5092] munmap(0x7f299346a000, 138412032 [pid 5093] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5092] <... munmap resumed>) = 0 [pid 5093] close(6 [pid 5094] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5093] <... close resumed>) = 0 [ 59.847970][ T5095] syz-executor166 (5095): drop_caches: 1 [pid 5094] close(6 [pid 5093] close(5 [pid 5094] <... close resumed>) = 0 [pid 5096] munmap(0x7f299346a000, 138412032 [pid 5094] close(5 [pid 5093] <... close resumed>) = 0 [pid 5092] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5092] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5094] <... close resumed>) = 0 [pid 5092] ioctl(6, LOOP_CLR_FD [pid 5093] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5092] <... ioctl resumed>) = 0 [pid 5093] <... open resumed>) = 5 [pid 5092] ioctl(6, LOOP_SET_FD, 5 [pid 5093] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5092] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5096] <... munmap resumed>) = 0 [pid 5092] close(6) = 0 [pid 5092] close(5 [pid 5096] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5096] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5096] ioctl(6, LOOP_CLR_FD) = 0 [pid 5096] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5095] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5096] close(6 [pid 5093] <... pwritev resumed>) = 103 [pid 5097] <... write resumed>) = 2097152 [pid 5096] <... close resumed>) = 0 [pid 5094] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5093] exit_group(0 [pid 5096] close(5 [pid 5093] <... exit_group resumed>) = ? [pid 5093] +++ exited with 0 +++ [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5094] <... open resumed>) = 5 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5097] munmap(0x7f299346a000, 138412032 [pid 5094] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5092] <... close resumed>) = 0 [pid 5078] <... ioctl resumed>) = 0 [pid 5078] close(3) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5098 attached [pid 5098] set_robust_list(0x55555677f660, 24) = 0 [pid 5097] <... munmap resumed>) = 0 [pid 5092] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5098 [pid 5098] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5097] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5096] <... close resumed>) = 0 [pid 5094] <... pwritev resumed>) = 103 [pid 5092] <... open resumed>) = 5 [pid 5094] exit_group(0 [pid 5098] <... prctl resumed>) = 0 [pid 5094] <... exit_group resumed>) = ? [pid 5092] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5097] <... openat resumed>) = 6 [pid 5097] ioctl(6, LOOP_SET_FD, 5 [pid 5094] +++ exited with 0 +++ [pid 5097] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5098] setpgid(0, 0 [pid 5097] ioctl(6, LOOP_CLR_FD [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5098] <... setpgid resumed>) = 0 [pid 5097] <... ioctl resumed>) = 0 [pid 5096] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5092] <... pwritev resumed>) = 103 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5097] ioctl(6, LOOP_SET_FD, 5 [pid 5096] <... open resumed>) = 5 [pid 5092] exit_group(0 [pid 5071] <... openat resumed>) = 3 [pid 5098] <... openat resumed>) = 3 [pid 5097] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5096] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5095] <... write resumed>) = 2097152 [pid 5092] <... exit_group resumed>) = ? [pid 5071] ioctl(3, LOOP_CLR_FD) = 0 [pid 5071] close(3) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5097] close(6./strace-static-x86_64: Process 5099 attached [pid 5098] write(3, "1000", 4 [pid 5097] <... close resumed>) = 0 [pid 5098] <... write resumed>) = 4 [pid 5098] close(3 [pid 5097] close(5 [pid 5095] munmap(0x7f299346a000, 138412032 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5099 [pid 5095] <... munmap resumed>) = 0 [pid 5098] <... close resumed>) = 0 [pid 5096] <... pwritev resumed>) = 103 [pid 5098] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5096] exit_group(0 [pid 5099] set_robust_list(0x55555677f660, 24 [pid 5096] <... exit_group resumed>) = ? [pid 5099] <... set_robust_list resumed>) = 0 [pid 5098] <... openat resumed>) = 3 [pid 5096] +++ exited with 0 +++ [pid 5092] +++ exited with 0 +++ [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5092, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5098] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5072] restart_syscall(<... resuming interrupted clone ...> [pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5098] <... openat resumed>) = 4 [pid 5072] <... restart_syscall resumed>) = 0 [pid 5098] sendfile(4, 3, [88] [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5099] <... prctl resumed>) = 0 [pid 5095] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5072] <... ioctl resumed>) = 0 [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5072] close(3 [pid 5070] <... openat resumed>) = 3 [pid 5072] <... close resumed>) = 0 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] <... ioctl resumed>) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5099] setpgid(0, 0./strace-static-x86_64: Process 5100 attached [pid 5095] ioctl(6, LOOP_SET_FD, 5 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5100 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5101 [pid 5100] set_robust_list(0x55555677f660, 24 [pid 5095] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5095] ioctl(6, LOOP_CLR_FD) = 0 [pid 5100] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5101 attached [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5099] <... setpgid resumed>) = 0 [pid 5097] <... close resumed>) = 0 [pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5099] write(3, "1000", 4 [pid 5095] ioctl(6, LOOP_SET_FD, 5 [pid 5099] <... write resumed>) = 4 [pid 5099] close(3 [pid 5097] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5095] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5101] set_robust_list(0x55555677f660, 24 [pid 5099] <... close resumed>) = 0 [pid 5100] <... prctl resumed>) = 0 [pid 5095] close(6 [pid 5099] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5100] setpgid(0, 0 [pid 5097] <... open resumed>) = 5 [pid 5095] <... close resumed>) = 0 [pid 5099] <... openat resumed>) = 3 [pid 5100] <... setpgid resumed>) = 0 [pid 5099] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5095] close(5 [pid 5101] <... set_robust_list resumed>) = 0 [pid 5100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5099] <... openat resumed>) = 4 [pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5100] <... openat resumed>) = 3 [pid 5099] sendfile(4, 3, [88] [pid 5100] write(3, "1000", 4) = 4 [pid 5100] close(3) = 0 [pid 5100] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5100] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5100] sendfile(4, 3, [88] [pid 5101] <... prctl resumed>) = 0 [pid 5095] <... close resumed>) = 0 [pid 5101] setpgid(0, 0 [pid 5097] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5101] <... setpgid resumed>) = 0 [pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5101] write(3, "1000", 4) = 4 [pid 5101] close(3) = 0 [pid 5095] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5095] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5101] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5097] <... pwritev resumed>) = 103 [pid 5101] <... openat resumed>) = 3 [pid 5097] exit_group(0 [pid 5101] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5097] <... exit_group resumed>) = ? [pid 5095] <... pwritev resumed>) = 103 [pid 5095] exit_group(0) = ? [pid 5095] +++ exited with 0 +++ [pid 5101] <... openat resumed>) = 4 [pid 5101] sendfile(4, 3, [88] [pid 5097] +++ exited with 0 +++ [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5095, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5097, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5076] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5069] <... openat resumed>) = 3 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD) = 0 [pid 5076] close(3) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5102 attached [pid 5102] set_robust_list(0x55555677f660, 24 [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5102] <... set_robust_list resumed>) = 0 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5102] setpgid(0, 0) = 0 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5102 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5069] <... ioctl resumed>) = 0 [pid 5102] <... openat resumed>) = 3 [pid 5069] close(3 [pid 5102] write(3, "1000", 4) = 4 [pid 5102] close(3) = 0 [pid 5102] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5069] <... close resumed>) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5102] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5102] sendfile(4, 3, [88]./strace-static-x86_64: Process 5103 attached [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5103 [pid 5103] set_robust_list(0x55555677f660, 24) = 0 [pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5103] setpgid(0, 0) = 0 [pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5103] write(3, "1000", 4) = 4 [pid 5103] close(3) = 0 [pid 5103] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5103] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 60.285883][ T5100] syz-executor166 (5100): drop_caches: 1 [ 60.290774][ T5098] syz-executor166 (5098): drop_caches: 1 [ 60.326483][ T5099] syz-executor166 (5099): drop_caches: 1 [ 60.352969][ T5102] syz-executor166 (5102): drop_caches: 1 [ 60.355495][ T5101] syz-executor166 (5101): drop_caches: 1 [ 60.434739][ T5103] syz-executor166 (5103): drop_caches: 1 [ 60.486854][ T5098] syz-executor166 (5098): drop_caches: 1 [ 60.519072][ T5100] syz-executor166 (5100): drop_caches: 1 [pid 5103] sendfile(4, 3, [88] [pid 5100] <... sendfile resumed> => [103], 15) = 15 [pid 5098] <... sendfile resumed> => [103], 15) = 15 [pid 5098] memfd_create("syzkaller", 0) = 5 [pid 5100] memfd_create("syzkaller", 0 [pid 5098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5100] <... memfd_create resumed>) = 5 [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5098] <... mmap resumed>) = 0x7f299346a000 [pid 5099] <... sendfile resumed> => [103], 15) = 15 [pid 5099] memfd_create("syzkaller", 0) = 5 [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5102] <... sendfile resumed> => [103], 15) = 15 [pid 5100] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5102] memfd_create("syzkaller", 0) = 5 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 60.535739][ T5099] syz-executor166 (5099): drop_caches: 1 [ 60.556101][ T5102] syz-executor166 (5102): drop_caches: 1 [ 60.566698][ T5101] syz-executor166 (5101): drop_caches: 1 [pid 5101] <... sendfile resumed> => [103], 15) = 15 [pid 5098] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5101] memfd_create("syzkaller", 0) = 5 [pid 5101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5099] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5100] <... write resumed>) = 2097152 [pid 5103] <... sendfile resumed> => [103], 15) = 15 [ 60.625014][ T5103] syz-executor166 (5103): drop_caches: 1 [pid 5101] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5100] munmap(0x7f299346a000, 138412032 [pid 5103] memfd_create("syzkaller", 0 [pid 5102] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5099] <... write resumed>) = 2097152 [pid 5098] <... write resumed>) = 2097152 [pid 5103] <... memfd_create resumed>) = 5 [pid 5103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5099] munmap(0x7f299346a000, 138412032) = 0 [pid 5098] munmap(0x7f299346a000, 138412032 [pid 5100] <... munmap resumed>) = 0 [pid 5100] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5099] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5100] <... openat resumed>) = 6 [pid 5099] <... openat resumed>) = 6 [pid 5100] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5100] ioctl(6, LOOP_CLR_FD [pid 5099] ioctl(6, LOOP_SET_FD, 5 [pid 5100] <... ioctl resumed>) = 0 [pid 5099] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5099] ioctl(6, LOOP_CLR_FD [pid 5098] <... munmap resumed>) = 0 [pid 5100] ioctl(6, LOOP_SET_FD, 5 [pid 5099] <... ioctl resumed>) = 0 [pid 5100] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5101] <... write resumed>) = 2097152 [pid 5100] close(6) = 0 [pid 5099] ioctl(6, LOOP_SET_FD, 5 [pid 5098] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5098] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5098] ioctl(6, LOOP_CLR_FD) = 0 [pid 5100] close(5 [pid 5099] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5098] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5098] close(6) = 0 [pid 5098] close(5 [pid 5101] munmap(0x7f299346a000, 138412032 [pid 5099] close(6) = 0 [pid 5099] close(5 [pid 5102] <... write resumed>) = 2097152 [pid 5103] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5101] <... munmap resumed>) = 0 [pid 5100] <... close resumed>) = 0 [pid 5099] <... close resumed>) = 0 [pid 5098] <... close resumed>) = 0 [pid 5100] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5098] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5100] <... open resumed>) = 5 [pid 5098] <... open resumed>) = 5 [pid 5098] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5102] munmap(0x7f299346a000, 138412032 [pid 5101] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5099] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5101] <... openat resumed>) = 6 [pid 5100] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5099] <... open resumed>) = 5 [pid 5101] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5102] <... munmap resumed>) = 0 [pid 5101] ioctl(6, LOOP_CLR_FD) = 0 [pid 5102] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 6 [pid 5102] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5102] ioctl(6, LOOP_CLR_FD) = 0 [pid 5102] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5102] close(6) = 0 [pid 5102] close(5 [pid 5100] <... pwritev resumed>) = 103 [pid 5099] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5098] <... pwritev resumed>) = 103 [pid 5101] ioctl(6, LOOP_SET_FD, 5 [pid 5100] exit_group(0) = ? [pid 5101] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5100] +++ exited with 0 +++ [pid 5101] close(6 [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5100, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5101] <... close resumed>) = 0 [pid 5101] close(5 [pid 5098] exit_group(0 [pid 5072] restart_syscall(<... resuming interrupted clone ...> [pid 5098] <... exit_group resumed>) = ? [pid 5072] <... restart_syscall resumed>) = 0 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5072] ioctl(3, LOOP_CLR_FD) = 0 [pid 5072] close(3) = 0 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555677f650) = 5104 ./strace-static-x86_64: Process 5104 attached [pid 5103] <... write resumed>) = 2097152 [pid 5099] <... pwritev resumed>) = 103 [pid 5098] +++ exited with 0 +++ [pid 5104] set_robust_list(0x55555677f660, 24 [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5098, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} --- [pid 5104] <... set_robust_list resumed>) = 0 [pid 5099] exit_group(0 [pid 5104] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5099] <... exit_group resumed>) = ? [pid 5104] <... prctl resumed>) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5104] setpgid(0, 0 [pid 5102] <... close resumed>) = 0 [pid 5078] <... openat resumed>) = 3 [pid 5104] <... setpgid resumed>) = 0 [pid 5103] munmap(0x7f299346a000, 138412032 [pid 5101] <... close resumed>) = 0 [pid 5099] +++ exited with 0 +++ [pid 5104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5102] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5104] <... openat resumed>) = 3 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5104] write(3, "1000", 4 [pid 5078] <... ioctl resumed>) = 0 [pid 5104] <... write resumed>) = 4 [pid 5078] close(3 [pid 5104] close(3 [pid 5078] <... close resumed>) = 0 [pid 5104] <... close resumed>) = 0 [pid 5102] <... open resumed>) = 5 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5099, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5104] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5103] <... munmap resumed>) = 0 [pid 5102] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5101] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5071] <... openat resumed>) = 3 [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5104] <... openat resumed>) = 3 [pid 5103] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5101] <... open resumed>) = 5 [pid 5071] <... ioctl resumed>) = 0 [pid 5101] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5104] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5103] <... openat resumed>) = 6 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5105 [pid 5071] close(3./strace-static-x86_64: Process 5105 attached [pid 5104] <... openat resumed>) = 4 [pid 5105] set_robust_list(0x55555677f660, 24 [pid 5104] sendfile(4, 3, [88] [pid 5071] <... close resumed>) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5106 attached [pid 5105] <... set_robust_list resumed>) = 0 [pid 5103] ioctl(6, LOOP_SET_FD, 5 [pid 5102] <... pwritev resumed>) = 103 [pid 5101] <... pwritev resumed>) = 103 [pid 5106] set_robust_list(0x55555677f660, 24 [pid 5105] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5103] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5102] exit_group(0 [pid 5101] exit_group(0 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5106 [pid 5106] <... set_robust_list resumed>) = 0 [pid 5105] <... prctl resumed>) = 0 [pid 5103] ioctl(6, LOOP_CLR_FD [pid 5102] <... exit_group resumed>) = ? [pid 5101] <... exit_group resumed>) = ? [pid 5105] setpgid(0, 0 [pid 5103] <... ioctl resumed>) = 0 [pid 5105] <... setpgid resumed>) = 0 [pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5106] <... prctl resumed>) = 0 [pid 5105] <... openat resumed>) = 3 [pid 5102] +++ exited with 0 +++ [pid 5101] +++ exited with 0 +++ [pid 5106] setpgid(0, 0 [pid 5105] write(3, "1000", 4 [pid 5103] ioctl(6, LOOP_SET_FD, 5 [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5102, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5101, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5106] <... setpgid resumed>) = 0 [pid 5105] <... write resumed>) = 4 [pid 5103] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5103] close(6 [pid 5105] close(3) = 0 [pid 5105] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5103] <... close resumed>) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5105] <... openat resumed>) = 3 [pid 5105] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5105] <... openat resumed>) = 4 [pid 5103] close(5 [pid 5076] <... openat resumed>) = 3 [pid 5070] <... openat resumed>) = 3 [pid 5106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5105] sendfile(4, 3, [88] [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5076] <... ioctl resumed>) = 0 [pid 5106] <... openat resumed>) = 3 [pid 5076] close(3 [pid 5070] <... ioctl resumed>) = 0 [pid 5070] close(3 [pid 5076] <... close resumed>) = 0 [pid 5070] <... close resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5106] write(3, "1000", 4 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5106] <... write resumed>) = 4 [pid 5106] close(3) = 0 [pid 5106] openat(AT_FDCWD, "/proc/partitions", O_RDONLY./strace-static-x86_64: Process 5108 attached [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5107 [pid 5108] set_robust_list(0x55555677f660, 24 [pid 5106] <... openat resumed>) = 3 [pid 5108] <... set_robust_list resumed>) = 0 [pid 5106] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5103] <... close resumed>) = 0 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5108 [pid 5108] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5106] <... openat resumed>) = 4 [pid 5103] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5108] <... prctl resumed>) = 0 [pid 5106] sendfile(4, 3, [88] [pid 5108] setpgid(0, 0 [pid 5103] <... open resumed>) = 5 [pid 5108] <... setpgid resumed>) = 0 [pid 5103] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5107 attached ) = 3 [pid 5108] write(3, "1000", 4 [pid 5107] set_robust_list(0x55555677f660, 24 [pid 5108] <... write resumed>) = 4 [pid 5107] <... set_robust_list resumed>) = 0 [pid 5108] close(3 [pid 5107] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5108] <... close resumed>) = 0 [pid 5108] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5107] <... prctl resumed>) = 0 [pid 5108] <... openat resumed>) = 3 [pid 5107] setpgid(0, 0 [pid 5103] <... pwritev resumed>) = 103 [pid 5108] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5107] <... setpgid resumed>) = 0 [pid 5108] <... openat resumed>) = 4 [pid 5107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5103] exit_group(0 [pid 5108] sendfile(4, 3, [88] [pid 5107] <... openat resumed>) = 3 [pid 5103] <... exit_group resumed>) = ? [pid 5107] write(3, "1000", 4) = 4 [pid 5107] close(3) = 0 [pid 5107] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5107] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5107] sendfile(4, 3, [88] [pid 5103] +++ exited with 0 +++ [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5103, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} --- [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5069] ioctl(3, LOOP_CLR_FD) = 0 [pid 5069] close(3) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5109 attached , child_tidptr=0x55555677f650) = 5109 [pid 5109] set_robust_list(0x55555677f660, 24) = 0 [pid 5109] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5109] setpgid(0, 0) = 0 [pid 5109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5109] write(3, "1000", 4) = 4 [pid 5109] close(3) = 0 [pid 5109] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [ 61.093257][ T5104] syz-executor166 (5104): drop_caches: 1 [ 61.108040][ T5105] syz-executor166 (5105): drop_caches: 1 [pid 5109] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 61.136045][ T5106] syz-executor166 (5106): drop_caches: 1 [ 61.156820][ T5107] syz-executor166 (5107): drop_caches: 1 [ 61.163862][ T5108] syz-executor166 (5108): drop_caches: 1 [pid 5109] sendfile(4, 3, [88] [pid 5104] <... sendfile resumed> => [103], 15) = 15 [pid 5104] memfd_create("syzkaller", 0) = 5 [pid 5104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 61.250343][ T5104] syz-executor166 (5104): drop_caches: 1 [ 61.272790][ T5109] syz-executor166 (5109): drop_caches: 1 [ 61.277978][ T5106] syz-executor166 (5106): drop_caches: 1 [ 61.283914][ T5105] syz-executor166 (5105): drop_caches: 1 [pid 5108] <... sendfile resumed> => [103], 15) = 15 [pid 5106] <... sendfile resumed> => [103], 15) = 15 [pid 5105] <... sendfile resumed> => [103], 15) = 15 [pid 5105] memfd_create("syzkaller", 0) = 5 [pid 5105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5108] memfd_create("syzkaller", 0 [pid 5106] memfd_create("syzkaller", 0 [pid 5104] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5106] <... memfd_create resumed>) = 5 [pid 5108] <... memfd_create resumed>) = 5 [pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5106] <... mmap resumed>) = 0x7f299346a000 [pid 5108] <... mmap resumed>) = 0x7f299346a000 [ 61.302323][ T5108] syz-executor166 (5108): drop_caches: 1 [pid 5105] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5107] <... sendfile resumed> => [103], 15) = 15 [pid 5107] memfd_create("syzkaller", 0 [pid 5108] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5106] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5104] <... write resumed>) = 2097152 [pid 5107] <... memfd_create resumed>) = 5 [pid 5105] <... write resumed>) = 2097152 [ 61.367352][ T5107] syz-executor166 (5107): drop_caches: 1 [pid 5107] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5104] munmap(0x7f299346a000, 138412032 [pid 5109] <... sendfile resumed> => [103], 15) = 15 [pid 5107] <... mmap resumed>) = 0x7f299346a000 [pid 5105] munmap(0x7f299346a000, 138412032 [pid 5104] <... munmap resumed>) = 0 [pid 5104] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5104] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5104] ioctl(6, LOOP_CLR_FD) = 0 [pid 5104] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5104] close(6) = 0 [pid 5104] close(5 [pid 5109] memfd_create("syzkaller", 0 [pid 5106] <... write resumed>) = 2097152 [pid 5105] <... munmap resumed>) = 0 [pid 5109] <... memfd_create resumed>) = 5 [pid 5106] munmap(0x7f299346a000, 138412032 [pid 5105] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5105] <... openat resumed>) = 6 [pid 5105] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5109] <... mmap resumed>) = 0x7f299346a000 [pid 5107] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5106] <... munmap resumed>) = 0 [pid 5105] ioctl(6, LOOP_CLR_FD) = 0 [pid 5104] <... close resumed>) = 0 [ 61.423223][ T5109] syz-executor166 (5109): drop_caches: 1 [pid 5108] <... write resumed>) = 2097152 [pid 5106] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5104] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5108] munmap(0x7f299346a000, 138412032 [pid 5106] <... openat resumed>) = 6 [pid 5105] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5104] <... open resumed>) = 5 [pid 5108] <... munmap resumed>) = 0 [pid 5105] close(6 [pid 5104] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5105] <... close resumed>) = 0 [pid 5106] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5106] ioctl(6, LOOP_CLR_FD) = 0 [pid 5105] close(5 [pid 5104] <... pwritev resumed>) = 103 [pid 5104] exit_group(0 [pid 5106] ioctl(6, LOOP_SET_FD, 5 [pid 5104] <... exit_group resumed>) = ? [pid 5106] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5106] close(6 [pid 5104] +++ exited with 0 +++ [pid 5106] <... close resumed>) = 0 [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5104, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=13 /* 0.13 s */} --- [pid 5108] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5107] <... write resumed>) = 2097152 [pid 5106] close(5 [pid 5108] <... openat resumed>) = 6 [pid 5108] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5108] ioctl(6, LOOP_CLR_FD) = 0 [pid 5107] munmap(0x7f299346a000, 138412032 [pid 5108] ioctl(6, LOOP_SET_FD, 5 [pid 5107] <... munmap resumed>) = 0 [pid 5072] <... ioctl resumed>) = 0 [pid 5108] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5108] close(6) = 0 [pid 5108] close(5 [pid 5072] close(3 [pid 5107] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5107] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5107] ioctl(6, LOOP_CLR_FD) = 0 [pid 5107] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5107] close(6) = 0 [pid 5106] <... close resumed>) = 0 [pid 5109] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5107] close(5 [pid 5105] <... close resumed>) = 0 [pid 5072] <... close resumed>) = 0 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5106] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5105] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5106] <... open resumed>) = 5 [pid 5105] <... open resumed>) = 5 [pid 5106] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5105] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5108] <... close resumed>) = 0 [pid 5108] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5108] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452./strace-static-x86_64: Process 5110 attached [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5110 [pid 5110] set_robust_list(0x55555677f660, 24) = 0 [pid 5110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5110] setpgid(0, 0) = 0 [pid 5110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5108] <... pwritev resumed>) = 103 [pid 5106] <... pwritev resumed>) = 103 [pid 5105] <... pwritev resumed>) = 103 [pid 5108] exit_group(0 [pid 5106] exit_group(0 [pid 5105] exit_group(0 [pid 5108] <... exit_group resumed>) = ? [pid 5106] <... exit_group resumed>) = ? [pid 5105] <... exit_group resumed>) = ? [pid 5110] write(3, "1000", 4 [pid 5108] +++ exited with 0 +++ [pid 5106] +++ exited with 0 +++ [pid 5105] +++ exited with 0 +++ [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5106, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5108, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5105, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5078] <... openat resumed>) = 3 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5076] <... openat resumed>) = 3 [pid 5071] <... openat resumed>) = 3 [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5078] <... ioctl resumed>) = 0 [pid 5078] close(3 [pid 5110] <... write resumed>) = 4 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5071] <... ioctl resumed>) = 0 [pid 5107] <... close resumed>) = 0 [pid 5078] <... close resumed>) = 0 [pid 5076] <... ioctl resumed>) = 0 [pid 5110] close(3 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5076] close(3 [pid 5071] close(3 [pid 5107] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000./strace-static-x86_64: Process 5111 attached [pid 5110] <... close resumed>) = 0 [pid 5109] <... write resumed>) = 2097152 [pid 5076] <... close resumed>) = 0 [pid 5071] <... close resumed>) = 0 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5111 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5110] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5111] set_robust_list(0x55555677f660, 24) = 0 [pid 5111] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5107] <... open resumed>) = 5 ./strace-static-x86_64: Process 5112 attached [pid 5112] set_robust_list(0x55555677f660, 24) = 0 [pid 5111] <... prctl resumed>) = 0 [pid 5112] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5111] setpgid(0, 0 [pid 5112] <... prctl resumed>) = 0 [pid 5111] <... setpgid resumed>) = 0 [pid 5107] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452./strace-static-x86_64: Process 5113 attached [pid 5112] setpgid(0, 0 [pid 5111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5110] <... openat resumed>) = 3 [pid 5109] munmap(0x7f299346a000, 138412032 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5112 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5113 [pid 5112] <... setpgid resumed>) = 0 [pid 5111] <... openat resumed>) = 3 [pid 5110] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5113] set_robust_list(0x55555677f660, 24 [pid 5112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5111] write(3, "1000", 4 [pid 5110] <... openat resumed>) = 4 [pid 5113] <... set_robust_list resumed>) = 0 [pid 5112] <... openat resumed>) = 3 [pid 5107] <... pwritev resumed>) = 103 [pid 5110] sendfile(4, 3, [88] [pid 5111] <... write resumed>) = 4 [pid 5107] exit_group(0 [pid 5112] write(3, "1000", 4 [pid 5111] close(3 [pid 5107] <... exit_group resumed>) = ? [pid 5111] <... close resumed>) = 0 [pid 5107] +++ exited with 0 +++ [pid 5111] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5109] <... munmap resumed>) = 0 [pid 5112] <... write resumed>) = 4 [pid 5111] <... openat resumed>) = 3 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5107, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- [pid 5112] close(3 [pid 5111] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5112] <... close resumed>) = 0 [pid 5111] <... openat resumed>) = 4 [pid 5070] <... openat resumed>) = 3 [pid 5112] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5111] sendfile(4, 3, [88] [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5113] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5112] <... openat resumed>) = 3 [pid 5109] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5113] <... prctl resumed>) = 0 [pid 5113] setpgid(0, 0 [pid 5109] <... openat resumed>) = 6 [pid 5070] <... ioctl resumed>) = 0 [pid 5070] close(3 [pid 5112] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5070] <... close resumed>) = 0 [pid 5112] <... openat resumed>) = 4 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5114 attached [pid 5112] sendfile(4, 3, [88] [pid 5114] set_robust_list(0x55555677f660, 24 [pid 5113] <... setpgid resumed>) = 0 [pid 5109] ioctl(6, LOOP_SET_FD, 5 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5114 [pid 5114] <... set_robust_list resumed>) = 0 [pid 5114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5114] setpgid(0, 0) = 0 [pid 5114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5109] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5114] <... openat resumed>) = 3 [pid 5109] ioctl(6, LOOP_CLR_FD [pid 5113] <... openat resumed>) = 3 [pid 5114] write(3, "1000", 4 [pid 5113] write(3, "1000", 4 [pid 5109] <... ioctl resumed>) = 0 [pid 5114] <... write resumed>) = 4 [pid 5113] <... write resumed>) = 4 [pid 5114] close(3) = 0 [pid 5113] close(3 [pid 5114] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5113] <... close resumed>) = 0 [pid 5114] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5113] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5109] ioctl(6, LOOP_SET_FD, 5 [pid 5114] <... openat resumed>) = 4 [pid 5113] <... openat resumed>) = 3 [pid 5109] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5114] sendfile(4, 3, [88] [pid 5113] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5109] close(6 [pid 5113] <... openat resumed>) = 4 [pid 5109] <... close resumed>) = 0 [pid 5113] sendfile(4, 3, [88] [pid 5109] close(5) = 0 [pid 5109] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5109] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5109] exit_group(0) = ? [pid 5109] +++ exited with 0 +++ [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5109, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5069] ioctl(3, LOOP_CLR_FD) = 0 [pid 5069] close(3) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555677f650) = 5115 ./strace-static-x86_64: Process 5115 attached [pid 5115] set_robust_list(0x55555677f660, 24) = 0 [pid 5115] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5115] setpgid(0, 0) = 0 [pid 5115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 61.792168][ T5110] syz-executor166 (5110): drop_caches: 1 [ 61.804040][ T5112] syz-executor166 (5112): drop_caches: 1 [ 61.812173][ T5111] syz-executor166 (5111): drop_caches: 1 [ 61.834195][ T5114] syz-executor166 (5114): drop_caches: 1 [pid 5115] write(3, "1000", 4) = 4 [pid 5115] close(3) = 0 [pid 5115] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [ 61.835231][ T5113] syz-executor166 (5113): drop_caches: 1 [pid 5115] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5115] sendfile(4, 3, [88] [pid 5112] <... sendfile resumed> => [103], 15) = 15 [ 62.025584][ T5112] syz-executor166 (5112): drop_caches: 1 [ 62.029275][ T5111] syz-executor166 (5111): drop_caches: 1 [ 62.044670][ T5113] syz-executor166 (5113): drop_caches: 1 [ 62.054681][ T5110] syz-executor166 (5110): drop_caches: 1 [ 62.058119][ T5115] syz-executor166 (5115): drop_caches: 1 [pid 5112] memfd_create("syzkaller", 0 [pid 5114] <... sendfile resumed> => [103], 15) = 15 [pid 5113] <... sendfile resumed> => [103], 15) = 15 [pid 5112] <... memfd_create resumed>) = 5 [pid 5111] <... sendfile resumed> => [103], 15) = 15 [pid 5113] memfd_create("syzkaller", 0 [pid 5112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5111] memfd_create("syzkaller", 0 [pid 5112] <... mmap resumed>) = 0x7f299346a000 [pid 5111] <... memfd_create resumed>) = 5 [pid 5111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5113] <... memfd_create resumed>) = 5 [pid 5113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5110] <... sendfile resumed> => [103], 15) = 15 [pid 5110] memfd_create("syzkaller", 0) = 5 [pid 5110] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 62.071450][ T5114] syz-executor166 (5114): drop_caches: 1 [pid 5114] memfd_create("syzkaller", 0) = 5 [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5111] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5113] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5114] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5112] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5111] <... write resumed>) = 2097152 [pid 5110] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5111] munmap(0x7f299346a000, 138412032 [pid 5114] <... write resumed>) = 2097152 [pid 5114] munmap(0x7f299346a000, 138412032) = 0 [pid 5113] <... write resumed>) = 2097152 [pid 5111] <... munmap resumed>) = 0 [pid 5115] <... sendfile resumed> => [103], 15) = 15 [pid 5115] memfd_create("syzkaller", 0 [pid 5111] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5115] <... memfd_create resumed>) = 5 [pid 5113] munmap(0x7f299346a000, 138412032 [pid 5111] <... openat resumed>) = 6 [pid 5114] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5114] ioctl(6, LOOP_SET_FD, 5 [pid 5111] ioctl(6, LOOP_SET_FD, 5 [pid 5114] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5111] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5114] ioctl(6, LOOP_CLR_FD [pid 5111] ioctl(6, LOOP_CLR_FD [pid 5115] <... mmap resumed>) = 0x7f299346a000 [pid 5114] <... ioctl resumed>) = 0 [pid 5111] <... ioctl resumed>) = 0 [pid 5111] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5111] close(6 [pid 5113] <... munmap resumed>) = 0 [pid 5114] ioctl(6, LOOP_SET_FD, 5 [pid 5111] <... close resumed>) = 0 [pid 5114] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5111] close(5 [pid 5114] close(6 [pid 5112] <... write resumed>) = 2097152 [pid 5114] <... close resumed>) = 0 [ 62.192031][ T5115] syz-executor166 (5115): drop_caches: 1 [pid 5114] close(5 [pid 5113] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5115] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5113] <... openat resumed>) = 6 [pid 5112] munmap(0x7f299346a000, 138412032 [pid 5110] <... write resumed>) = 2097152 [pid 5113] ioctl(6, LOOP_SET_FD, 5 [pid 5112] <... munmap resumed>) = 0 [pid 5110] munmap(0x7f299346a000, 138412032 [pid 5113] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5112] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5110] <... munmap resumed>) = 0 [pid 5113] ioctl(6, LOOP_CLR_FD [pid 5112] <... openat resumed>) = 6 [pid 5112] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5112] ioctl(6, LOOP_CLR_FD) = 0 [pid 5113] <... ioctl resumed>) = 0 [pid 5112] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5114] <... close resumed>) = 0 [pid 5113] ioctl(6, LOOP_SET_FD, 5 [pid 5112] close(6 [pid 5110] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5112] <... close resumed>) = 0 [pid 5112] close(5 [pid 5113] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5110] <... openat resumed>) = 6 [pid 5113] close(6 [pid 5111] <... close resumed>) = 0 [pid 5113] <... close resumed>) = 0 [pid 5110] ioctl(6, LOOP_SET_FD, 5 [pid 5113] close(5 [pid 5110] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5111] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5114] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5111] <... open resumed>) = 5 [pid 5111] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5114] <... open resumed>) = 5 [pid 5114] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5114] exit_group(0) = ? [pid 5114] +++ exited with 0 +++ [pid 5110] ioctl(6, LOOP_CLR_FD) = 0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5114, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} --- [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5111] <... pwritev resumed>) = 103 [pid 5070] close(3 [pid 5111] exit_group(0 [pid 5070] <... close resumed>) = 0 [pid 5111] <... exit_group resumed>) = ? [pid 5110] ioctl(6, LOOP_SET_FD, 5 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5111] +++ exited with 0 +++ [pid 5110] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5111, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- ./strace-static-x86_64: Process 5116 attached [pid 5115] <... write resumed>) = 2097152 [pid 5113] <... close resumed>) = 0 [pid 5112] <... close resumed>) = 0 [pid 5110] close(6 [pid 5078] restart_syscall(<... resuming interrupted clone ...> [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5116 [pid 5110] <... close resumed>) = 0 [pid 5078] <... restart_syscall resumed>) = 0 [pid 5115] munmap(0x7f299346a000, 138412032 [pid 5110] close(5 [pid 5116] set_robust_list(0x55555677f660, 24 [pid 5112] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5116] <... set_robust_list resumed>) = 0 [pid 5112] <... open resumed>) = 5 [pid 5116] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5112] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5116] <... prctl resumed>) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5116] setpgid(0, 0 [pid 5078] <... openat resumed>) = 3 [pid 5116] <... setpgid resumed>) = 0 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5115] <... munmap resumed>) = 0 [pid 5078] <... ioctl resumed>) = 0 [pid 5116] write(3, "1000", 4 [pid 5112] <... pwritev resumed>) = 103 [pid 5116] <... write resumed>) = 4 [pid 5112] exit_group(0 [pid 5078] close(3 [pid 5116] close(3 [pid 5112] <... exit_group resumed>) = ? [pid 5078] <... close resumed>) = 0 [pid 5116] <... close resumed>) = 0 [pid 5112] +++ exited with 0 +++ [pid 5116] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5115] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5112, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- [pid 5116] <... openat resumed>) = 3 [pid 5116] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5113] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5116] <... openat resumed>) = 4 [pid 5115] <... openat resumed>) = 6 [pid 5113] <... open resumed>) = 5 ./strace-static-x86_64: Process 5117 attached [pid 5116] sendfile(4, 3, [88] [pid 5115] ioctl(6, LOOP_SET_FD, 5 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5117] set_robust_list(0x55555677f660, 24 [pid 5115] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5076] <... openat resumed>) = 3 [pid 5117] <... set_robust_list resumed>) = 0 [pid 5115] ioctl(6, LOOP_CLR_FD [pid 5113] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5117 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5117] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5115] <... ioctl resumed>) = 0 [pid 5076] <... ioctl resumed>) = 0 [pid 5076] close(3 [pid 5117] <... prctl resumed>) = 0 [pid 5076] <... close resumed>) = 0 [pid 5117] setpgid(0, 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5117] <... setpgid resumed>) = 0 [pid 5117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 5118 attached [pid 5117] write(3, "1000", 4 [pid 5115] ioctl(6, LOOP_SET_FD, 5 [pid 5110] <... close resumed>) = 0 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5118 [pid 5117] <... write resumed>) = 4 [pid 5115] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5117] close(3 [pid 5115] close(6 [pid 5110] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5117] <... close resumed>) = 0 [pid 5115] <... close resumed>) = 0 [pid 5118] set_robust_list(0x55555677f660, 24 [pid 5117] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5115] close(5 [pid 5110] <... open resumed>) = 5 [pid 5118] <... set_robust_list resumed>) = 0 [pid 5113] <... pwritev resumed>) = 103 [pid 5118] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5117] <... openat resumed>) = 3 [pid 5113] exit_group(0 [pid 5110] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5118] <... prctl resumed>) = 0 [pid 5113] <... exit_group resumed>) = ? [pid 5117] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5118] setpgid(0, 0 [pid 5117] <... openat resumed>) = 4 [pid 5113] +++ exited with 0 +++ [pid 5118] <... setpgid resumed>) = 0 [pid 5117] sendfile(4, 3, [88] [pid 5118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5113, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5071] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5118] <... openat resumed>) = 3 [pid 5110] <... pwritev resumed>) = 103 [pid 5118] write(3, "1000", 4 [pid 5110] exit_group(0 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5118] <... write resumed>) = 4 [pid 5110] <... exit_group resumed>) = ? [pid 5118] close(3 [pid 5071] <... openat resumed>) = 3 [pid 5118] <... close resumed>) = 0 [pid 5071] ioctl(3, LOOP_CLR_FD) = 0 [pid 5071] close(3 [pid 5118] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5118] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5118] sendfile(4, 3, [88] [pid 5071] <... close resumed>) = 0 [pid 5115] <... close resumed>) = 0 [pid 5110] +++ exited with 0 +++ [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5119 attached [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5110, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5119 [pid 5119] set_robust_list(0x55555677f660, 24 [pid 5115] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5119] <... set_robust_list resumed>) = 0 [pid 5115] <... open resumed>) = 5 [pid 5119] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5115] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5119] <... prctl resumed>) = 0 [pid 5119] setpgid(0, 0 [pid 5072] <... openat resumed>) = 3 [pid 5119] <... setpgid resumed>) = 0 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5072] <... ioctl resumed>) = 0 [pid 5119] <... openat resumed>) = 3 [pid 5072] close(3) = 0 [pid 5119] write(3, "1000", 4 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5119] <... write resumed>) = 4 [pid 5119] close(3) = 0 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5120 ./strace-static-x86_64: Process 5120 attached [pid 5119] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5120] set_robust_list(0x55555677f660, 24 [pid 5119] <... openat resumed>) = 3 [pid 5119] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5120] <... set_robust_list resumed>) = 0 [pid 5115] <... pwritev resumed>) = 103 [pid 5120] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5115] exit_group(0 [pid 5120] <... prctl resumed>) = 0 [pid 5119] <... openat resumed>) = 4 [pid 5115] <... exit_group resumed>) = ? [pid 5120] setpgid(0, 0) = 0 [pid 5119] sendfile(4, 3, [88] [pid 5115] +++ exited with 0 +++ [pid 5120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5115, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5120] <... openat resumed>) = 3 [pid 5069] <... openat resumed>) = 3 [pid 5120] write(3, "1000", 4) = 4 [pid 5120] close(3 [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5120] <... close resumed>) = 0 [pid 5069] <... ioctl resumed>) = 0 [pid 5069] close(3 [pid 5120] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5069] <... close resumed>) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5120] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5121 attached [pid 5120] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5121] set_robust_list(0x55555677f660, 24 [pid 5120] <... openat resumed>) = 4 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5121 [pid 5121] <... set_robust_list resumed>) = 0 [pid 5121] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5121] setpgid(0, 0) = 0 [pid 5121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5121] write(3, "1000", 4) = 4 [pid 5121] close(3) = 0 [pid 5121] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5121] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5121] sendfile(4, 3, [88] [ 62.566793][ T5116] syz-executor166 (5116): drop_caches: 1 [ 62.592760][ T5117] syz-executor166 (5117): drop_caches: 1 [ 62.597459][ T5118] syz-executor166 (5118): drop_caches: 1 [ 62.657979][ T5121] syz-executor166 (5121): drop_caches: 1 [ 62.661172][ T5119] syz-executor166 (5119): drop_caches: 1 [ 62.682959][ T5120] syz-executor166 (5120): drop_caches: 1 [pid 5120] sendfile(4, 3, [88] [pid 5116] <... sendfile resumed> => [103], 15) = 15 [pid 5117] <... sendfile resumed> => [103], 15) = 15 [pid 5117] memfd_create("syzkaller", 0) = 5 [pid 5117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5116] memfd_create("syzkaller", 0 [pid 5118] <... sendfile resumed> => [103], 15) = 15 [pid 5116] <... memfd_create resumed>) = 5 [pid 5118] memfd_create("syzkaller", 0 [pid 5116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 62.727333][ T5117] syz-executor166 (5117): drop_caches: 1 [ 62.761378][ T5116] syz-executor166 (5116): drop_caches: 1 [ 62.769071][ T5118] syz-executor166 (5118): drop_caches: 1 [pid 5119] <... sendfile resumed> => [103], 15) = 15 [pid 5118] <... memfd_create resumed>) = 5 [pid 5118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5117] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5119] memfd_create("syzkaller", 0) = 5 [pid 5120] <... sendfile resumed> => [103], 15) = 15 [pid 5119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5120] memfd_create("syzkaller", 0) = 5 [pid 5116] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5121] <... sendfile resumed> => [103], 15) = 15 [pid 5121] memfd_create("syzkaller", 0) = 5 [ 62.799686][ T5119] syz-executor166 (5119): drop_caches: 1 [ 62.833076][ T5120] syz-executor166 (5120): drop_caches: 1 [ 62.836804][ T5121] syz-executor166 (5121): drop_caches: 1 [pid 5118] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5120] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5119] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5117] <... write resumed>) = 2097152 [pid 5117] munmap(0x7f299346a000, 138412032 [pid 5116] <... write resumed>) = 2097152 [pid 5118] <... write resumed>) = 2097152 [pid 5121] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5120] <... write resumed>) = 2097152 [pid 5118] munmap(0x7f299346a000, 138412032 [pid 5116] munmap(0x7f299346a000, 138412032 [pid 5120] munmap(0x7f299346a000, 138412032 [pid 5119] <... write resumed>) = 2097152 [pid 5118] <... munmap resumed>) = 0 [pid 5117] <... munmap resumed>) = 0 [pid 5120] <... munmap resumed>) = 0 [pid 5119] munmap(0x7f299346a000, 138412032 [pid 5117] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5116] <... munmap resumed>) = 0 [pid 5118] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5117] <... openat resumed>) = 6 [pid 5121] <... write resumed>) = 2097152 [pid 5120] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5119] <... munmap resumed>) = 0 [pid 5118] <... openat resumed>) = 6 [pid 5116] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5121] munmap(0x7f299346a000, 138412032 [pid 5120] <... openat resumed>) = 6 [pid 5119] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5118] ioctl(6, LOOP_SET_FD, 5 [pid 5117] ioctl(6, LOOP_SET_FD, 5 [pid 5116] <... openat resumed>) = 6 [pid 5120] ioctl(6, LOOP_SET_FD, 5 [pid 5119] <... openat resumed>) = 6 [pid 5118] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5117] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5116] ioctl(6, LOOP_SET_FD, 5 [pid 5119] ioctl(6, LOOP_SET_FD, 5 [pid 5118] ioctl(6, LOOP_CLR_FD [pid 5117] ioctl(6, LOOP_CLR_FD [pid 5116] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5120] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5119] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5118] <... ioctl resumed>) = 0 [pid 5117] <... ioctl resumed>) = 0 [pid 5116] ioctl(6, LOOP_CLR_FD [pid 5120] ioctl(6, LOOP_CLR_FD [pid 5119] ioctl(6, LOOP_CLR_FD [pid 5116] <... ioctl resumed>) = 0 [pid 5120] <... ioctl resumed>) = 0 [pid 5119] <... ioctl resumed>) = 0 [pid 5118] ioctl(6, LOOP_SET_FD, 5 [pid 5119] ioctl(6, LOOP_SET_FD, 5 [pid 5117] ioctl(6, LOOP_SET_FD, 5 [pid 5116] ioctl(6, LOOP_SET_FD, 5 [pid 5119] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5118] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5117] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5116] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5121] <... munmap resumed>) = 0 [pid 5120] ioctl(6, LOOP_SET_FD, 5 [pid 5119] close(6 [pid 5118] close(6 [pid 5117] close(6 [pid 5116] close(6 [pid 5121] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5120] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5118] <... close resumed>) = 0 [pid 5116] <... close resumed>) = 0 [pid 5121] <... openat resumed>) = 6 [pid 5120] close(6 [pid 5118] close(5 [pid 5120] <... close resumed>) = 0 [pid 5119] <... close resumed>) = 0 [pid 5117] <... close resumed>) = 0 [pid 5116] close(5 [pid 5119] close(5 [pid 5117] close(5 [pid 5121] ioctl(6, LOOP_SET_FD, 5 [pid 5120] close(5 [pid 5121] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5121] ioctl(6, LOOP_CLR_FD) = 0 [pid 5121] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5121] close(6) = 0 [pid 5121] close(5) = 0 [pid 5120] <... close resumed>) = 0 [pid 5120] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5118] <... close resumed>) = 0 [pid 5120] <... open resumed>) = 5 [pid 5118] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5120] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5118] <... open resumed>) = 5 [pid 5118] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5117] <... close resumed>) = 0 [pid 5117] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5121] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5121] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5119] <... close resumed>) = 0 [pid 5117] <... open resumed>) = 5 [pid 5117] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5116] <... close resumed>) = 0 [pid 5119] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5121] <... pwritev resumed>) = 103 [pid 5120] <... pwritev resumed>) = 103 [pid 5118] <... pwritev resumed>) = 103 [pid 5121] exit_group(0 [pid 5120] exit_group(0 [pid 5119] <... open resumed>) = 5 [pid 5118] exit_group(0 [pid 5121] <... exit_group resumed>) = ? [pid 5120] <... exit_group resumed>) = ? [pid 5118] <... exit_group resumed>) = ? [pid 5120] +++ exited with 0 +++ [pid 5119] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5118] +++ exited with 0 +++ [pid 5117] <... pwritev resumed>) = 103 [pid 5116] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5121] +++ exited with 0 +++ [pid 5117] exit_group(0 [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5118, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- [pid 5117] <... exit_group resumed>) = ? [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5121, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 5116] <... open resumed>) = 5 [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5120, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5116] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5119] <... pwritev resumed>) = 103 [pid 5117] +++ exited with 0 +++ [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5119] exit_group(0 [pid 5076] <... openat resumed>) = 3 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5069] <... openat resumed>) = 3 [pid 5119] <... exit_group resumed>) = ? [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5117, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5076] <... ioctl resumed>) = 0 [pid 5072] <... openat resumed>) = 3 [pid 5069] <... ioctl resumed>) = 0 [pid 5076] close(3 [pid 5069] close(3 [pid 5076] <... close resumed>) = 0 [pid 5069] <... close resumed>) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5116] <... pwritev resumed>) = 103 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5116] exit_group(0 [pid 5078] <... openat resumed>) = 3 [pid 5116] <... exit_group resumed>) = ? [pid 5119] +++ exited with 0 +++ [pid 5116] +++ exited with 0 +++ [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5122 ./strace-static-x86_64: Process 5122 attached [pid 5078] <... ioctl resumed>) = 0 [pid 5072] <... ioctl resumed>) = 0 [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5119, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5116, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- ./strace-static-x86_64: Process 5123 attached [pid 5122] set_robust_list(0x55555677f660, 24 [pid 5078] close(3 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5123 [pid 5072] close(3 [pid 5123] set_robust_list(0x55555677f660, 24 [pid 5122] <... set_robust_list resumed>) = 0 [pid 5078] <... close resumed>) = 0 [pid 5123] <... set_robust_list resumed>) = 0 [pid 5122] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5072] <... close resumed>) = 0 [pid 5123] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5122] <... prctl resumed>) = 0 [pid 5123] <... prctl resumed>) = 0 [pid 5122] setpgid(0, 0 [pid 5123] setpgid(0, 0 [pid 5122] <... setpgid resumed>) = 0 [pid 5123] <... setpgid resumed>) = 0 [pid 5122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 5124 attached [pid 5123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] <... openat resumed>) = 3 [pid 5124] set_robust_list(0x55555677f660, 24 [pid 5123] <... openat resumed>) = 3 [pid 5122] <... openat resumed>) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5124] <... set_robust_list resumed>) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5070] <... ioctl resumed>) = 0 [pid 5124] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5123] write(3, "1000", 4 [pid 5071] <... openat resumed>) = 3 [pid 5070] close(3 [pid 5124] <... prctl resumed>) = 0 [pid 5123] <... write resumed>) = 4 [pid 5122] write(3, "1000", 4 [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5070] <... close resumed>) = 0 [pid 5124] setpgid(0, 0 [pid 5123] close(3 [pid 5122] <... write resumed>) = 4 [pid 5071] <... ioctl resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5126 attached ./strace-static-x86_64: Process 5125 attached [pid 5124] <... setpgid resumed>) = 0 [pid 5123] <... close resumed>) = 0 [pid 5122] close(3 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5124 [pid 5071] close(3 [pid 5126] set_robust_list(0x55555677f660, 24 [pid 5124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5123] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5122] <... close resumed>) = 0 [pid 5071] <... close resumed>) = 0 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5126 [pid 5126] <... set_robust_list resumed>) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5124] <... openat resumed>) = 3 [pid 5123] <... openat resumed>) = 3 [pid 5122] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5126] <... prctl resumed>) = 0 [pid 5126] setpgid(0, 0 [pid 5122] <... openat resumed>) = 3 [pid 5126] <... setpgid resumed>) = 0 [pid 5124] write(3, "1000", 4 [pid 5123] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY./strace-static-x86_64: Process 5127 attached [pid 5126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5125] set_robust_list(0x55555677f660, 24 [pid 5124] <... write resumed>) = 4 [pid 5123] <... openat resumed>) = 4 [pid 5122] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5125 [pid 5126] write(3, "1000", 4 [pid 5124] close(3 [pid 5123] sendfile(4, 3, [88] [pid 5122] <... openat resumed>) = 4 [pid 5126] <... write resumed>) = 4 [pid 5124] <... close resumed>) = 0 [pid 5126] close(3 [pid 5124] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5126] <... close resumed>) = 0 [pid 5124] <... openat resumed>) = 3 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5127 [pid 5125] <... set_robust_list resumed>) = 0 [pid 5126] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5125] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5124] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5127] set_robust_list(0x55555677f660, 24 [pid 5126] <... openat resumed>) = 3 [pid 5125] <... prctl resumed>) = 0 [pid 5124] <... openat resumed>) = 4 [pid 5127] <... set_robust_list resumed>) = 0 [pid 5126] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5125] setpgid(0, 0 [pid 5126] <... openat resumed>) = 4 [pid 5125] <... setpgid resumed>) = 0 [pid 5124] sendfile(4, 3, [88] [pid 5122] sendfile(4, 3, [88] [pid 5127] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5126] sendfile(4, 3, [88] [pid 5127] <... prctl resumed>) = 0 [pid 5125] <... openat resumed>) = 3 [pid 5127] setpgid(0, 0) = 0 [pid 5127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5125] write(3, "1000", 4) = 4 [pid 5125] close(3) = 0 [pid 5127] <... openat resumed>) = 3 [pid 5127] write(3, "1000", 4 [pid 5125] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5127] <... write resumed>) = 4 [pid 5125] <... openat resumed>) = 3 [pid 5125] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5127] close(3 [pid 5125] <... openat resumed>) = 4 [pid 5127] <... close resumed>) = 0 [pid 5127] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5125] sendfile(4, 3, [88] [pid 5127] <... openat resumed>) = 3 [pid 5127] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 63.266332][ T5122] syz-executor166 (5122): drop_caches: 1 [ 63.274354][ T5125] syz-executor166 (5125): drop_caches: 1 [ 63.282075][ T5123] syz-executor166 (5123): drop_caches: 1 [ 63.291955][ T5124] syz-executor166 (5124): drop_caches: 1 [ 63.311904][ T5127] syz-executor166 (5127): drop_caches: 1 [ 63.312128][ T5126] syz-executor166 (5126): drop_caches: 1 [ 63.349891][ T2438] [ 63.352233][ T2438] ====================================================== [ 63.359243][ T2438] WARNING: possible circular locking dependency detected [ 63.366250][ T2438] 6.7.0-rc1-syzkaller-00012-g9bacdd8996c7 #0 Not tainted [ 63.373266][ T2438] ------------------------------------------------------ [ 63.380267][ T2438] kworker/u4:7/2438 is trying to acquire lock: [ 63.386403][ T2438] ffff8880784b9180 (&rl->lock){++++}-{3:3}, at: ntfs_read_folio+0x1a98/0x2430 [ 63.395312][ T2438] [ 63.395312][ T2438] but task is already holding lock: [ 63.402671][ T2438] ffff8880784bc390 (&ni->mrec_lock){+.+.}-{3:3}, at: map_mft_record+0x4a/0x730 [ 63.405235][ T5125] syz-executor166 (5125): drop_caches: 1 [ 63.411646][ T2438] [ 63.411646][ T2438] which lock already depends on the new lock. [ 63.411646][ T2438] [ 63.411651][ T2438] [ 63.411651][ T2438] the existing dependency chain (in reverse order) is: [ 63.411656][ T2438] [ 63.411656][ T2438] -> #1 (&ni->mrec_lock){+.+.}-{3:3}: [ 63.411680][ T2438] __mutex_lock+0x175/0x9d0 [ 63.411706][ T2438] map_mft_record+0x4a/0x730 [ 63.454358][ T2438] ntfs_attr_extend_allocation+0x268/0x3840 [ 63.456621][ T5123] syz-executor166 (5123): drop_caches: 1 [ 63.460764][ T2438] ntfs_file_write_iter+0xaa0/0x2070 [ 63.460783][ T2438] do_iter_readv_writev+0x21e/0x3c0 [ 63.460798][ T2438] do_iter_write+0x17f/0x7f0 [ 63.460811][ T2438] vfs_writev+0x221/0x700 [ 63.460824][ T2438] __x64_sys_pwritev+0x228/0x300 [ 63.460840][ T2438] do_syscall_64+0x40/0x110 [ 63.460858][ T2438] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 63.490127][ T5127] syz-executor166 (5127): drop_caches: 1 [ 63.493307][ T2438] [ 63.493307][ T2438] -> #0 (&rl->lock){++++}-{3:3}: [pid 5127] sendfile(4, 3, [88] => [103], 15) = 15 [pid 5126] <... sendfile resumed> => [103], 15) = 15 [pid 5125] <... sendfile resumed> => [103], 15) = 15 [pid 5123] <... sendfile resumed> => [103], 15) = 15 [pid 5127] memfd_create("syzkaller", 0 [pid 5126] memfd_create("syzkaller", 0 [pid 5125] memfd_create("syzkaller", 0 [pid 5123] memfd_create("syzkaller", 0 [pid 5125] <... memfd_create resumed>) = 5 [pid 5123] <... memfd_create resumed>) = 5 [pid 5125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5125] <... mmap resumed>) = 0x7f299346a000 [pid 5123] <... mmap resumed>) = 0x7f299346a000 [ 63.517437][ T2438] __lock_acquire+0x2464/0x3b10 [ 63.522810][ T2438] lock_acquire+0x1ae/0x520 [ 63.527834][ T2438] down_read+0x9a/0x330 [ 63.528241][ T5126] syz-executor166 (5126): drop_caches: 1 [ 63.532501][ T2438] ntfs_read_folio+0x1a98/0x2430 [ 63.543559][ T2438] filemap_read_folio+0xe9/0x2c0 [ 63.549017][ T2438] do_read_cache_folio+0x205/0x540 [ 63.554661][ T2438] read_cache_page+0x5b/0x160 [ 63.559872][ T2438] ntfs_sync_mft_mirror+0x242/0x1ed0 [pid 5126] <... memfd_create resumed>) = 5 [pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5127] <... memfd_create resumed>) = 5 [pid 5127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 63.565690][ T2438] write_mft_record_nolock+0x1977/0x1da0 [ 63.571855][ T2438] write_mft_record+0x14b/0x380 [ 63.577238][ T2438] __ntfs_write_inode+0x91b/0xc30 [ 63.582783][ T2438] __writeback_single_inode+0xa91/0xe90 [ 63.588865][ T2438] writeback_sb_inodes+0x599/0x1080 [ 63.594592][ T2438] __writeback_inodes_wb+0xff/0x2d0 [ 63.600340][ T2438] wb_writeback+0x7f8/0xaa0 [ 63.605372][ T2438] wb_workfn+0x87c/0xfe0 [ 63.610154][ T2438] process_one_work+0x886/0x15d0 [pid 5125] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5123] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5127] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5126] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5125] <... write resumed>) = 2097152 [pid 5126] <... write resumed>) = 2097152 [pid 5125] munmap(0x7f299346a000, 138412032) = 0 [pid 5125] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5123] <... write resumed>) = 2097152 [pid 5125] <... openat resumed>) = 6 [pid 5125] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5125] ioctl(6, LOOP_CLR_FD) = 0 [ 63.615635][ T2438] worker_thread+0x8b9/0x1290 [ 63.620834][ T2438] kthread+0x2c6/0x3a0 [ 63.625426][ T2438] ret_from_fork+0x45/0x80 [ 63.630360][ T2438] ret_from_fork_asm+0x11/0x20 [ 63.635646][ T2438] [ 63.635646][ T2438] other info that might help us debug this: [ 63.635646][ T2438] [ 63.645864][ T2438] Possible unsafe locking scenario: [ 63.645864][ T2438] [ 63.653306][ T2438] CPU0 CPU1 [ 63.658673][ T2438] ---- ---- [ 63.664030][ T2438] lock(&ni->mrec_lock); [pid 5123] munmap(0x7f299346a000, 138412032 [pid 5125] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5125] close(6) = 0 [pid 5125] close(5 [pid 5123] <... munmap resumed>) = 0 [pid 5123] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 6 [pid 5123] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5123] ioctl(6, LOOP_CLR_FD) = 0 [pid 5127] <... write resumed>) = 2097152 [pid 5126] munmap(0x7f299346a000, 138412032 [pid 5127] munmap(0x7f299346a000, 138412032 [pid 5126] <... munmap resumed>) = 0 [pid 5123] ioctl(6, LOOP_SET_FD, 5 [pid 5127] <... munmap resumed>) = 0 [pid 5126] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5123] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5127] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5126] <... openat resumed>) = 6 [pid 5123] close(6 [pid 5127] <... openat resumed>) = 6 [pid 5123] <... close resumed>) = 0 [pid 5127] ioctl(6, LOOP_SET_FD, 5 [pid 5123] close(5 [pid 5127] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5127] ioctl(6, LOOP_CLR_FD) = 0 [ 63.668359][ T2438] lock(&rl->lock); [ 63.674779][ T2438] lock(&ni->mrec_lock); [ 63.681635][ T2438] rlock(&rl->lock); [ 63.685612][ T2438] [ 63.685612][ T2438] *** DEADLOCK *** [ 63.685612][ T2438] [ 63.693741][ T2438] 4 locks held by kworker/u4:7/2438: [ 63.699018][ T2438] #0: ffff888015a40938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 [pid 5126] ioctl(6, LOOP_SET_FD, 5 [pid 5127] ioctl(6, LOOP_SET_FD, 5 [pid 5126] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5127] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5126] ioctl(6, LOOP_CLR_FD [pid 5127] close(6 [pid 5126] <... ioctl resumed>) = 0 [pid 5127] <... close resumed>) = 0 [pid 5127] close(5 [pid 5126] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5126] close(6) = 0 [pid 5126] close(5 [pid 5123] <... close resumed>) = 0 [pid 5123] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5125] <... close resumed>) = 0 [ 63.709655][ T2438] #1: ffffc90009ba7d80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 [ 63.721529][ T2438] #2: ffff8880193a40e0 (&type->s_umount_key#66){++++}-{3:3}, at: super_trylock_shared+0x1e/0xf0 [ 63.732085][ T2438] #3: ffff8880784bc390 (&ni->mrec_lock){+.+.}-{3:3}, at: map_mft_record+0x4a/0x730 [ 63.741493][ T2438] [ 63.741493][ T2438] stack backtrace: [ 63.747373][ T2438] CPU: 1 PID: 2438 Comm: kworker/u4:7 Not tainted 6.7.0-rc1-syzkaller-00012-g9bacdd8996c7 #0 [ 63.757522][ T2438] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [pid 5126] <... close resumed>) = 0 [pid 5127] <... close resumed>) = 0 [pid 5125] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5126] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [ 63.767590][ T2438] Workqueue: writeback wb_workfn (flush-7:2) [ 63.773578][ T2438] Call Trace: [ 63.776862][ T2438] [ 63.779794][ T2438] dump_stack_lvl+0xd9/0x1b0 [ 63.784401][ T2438] check_noncircular+0x317/0x400 [ 63.789357][ T2438] ? print_circular_bug+0x5c0/0x5c0 [ 63.794570][ T2438] ? lockdep_lock+0xc6/0x200 [ 63.799182][ T2438] ? hlock_class+0x130/0x130 [ 63.803798][ T2438] __lock_acquire+0x2464/0x3b10 [ 63.808687][ T2438] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 63.814709][ T2438] lock_acquire+0x1ae/0x520 [ 63.819258][ T2438] ? ntfs_read_folio+0x1a98/0x2430 [ 63.824407][ T2438] ? lock_sync+0x190/0x190 [ 63.828840][ T2438] ? find_held_lock+0x2d/0x110 [ 63.833618][ T2438] ? preempt_count_sub+0x160/0x160 [ 63.838743][ T2438] down_read+0x9a/0x330 [ 63.842904][ T2438] ? ntfs_read_folio+0x1a98/0x2430 [ 63.848031][ T2438] ? rwsem_down_read_slowpath+0xb20/0xb20 [ 63.853765][ T2438] ? mark_held_locks+0x9f/0xe0 [ 63.858548][ T2438] ? _raw_read_unlock_irqrestore+0x4e/0x70 [ 63.864365][ T2438] ntfs_read_folio+0x1a98/0x2430 [ 63.869339][ T2438] ? __print_lock_name+0x260/0x260 [ 63.874473][ T2438] ? ntfs_end_buffer_async_read+0x18e0/0x18e0 [ 63.880575][ T2438] ? folio_add_lru+0x451/0x7f0 [ 63.885365][ T2438] ? ntfs_end_buffer_async_read+0x18e0/0x18e0 [ 63.891450][ T2438] filemap_read_folio+0xe9/0x2c0 [ 63.896397][ T2438] ? __folio_lock_killable+0x20/0x20 [ 63.901684][ T2438] ? __filemap_get_folio+0x2b0/0xaa0 [ 63.906982][ T2438] ? find_held_lock+0x2d/0x110 [ 63.911770][ T2438] do_read_cache_folio+0x205/0x540 [ 63.916879][ T2438] ? ntfs_end_buffer_async_read+0x18e0/0x18e0 [ 63.922952][ T2438] read_cache_page+0x5b/0x160 [ 63.927625][ T2438] ntfs_sync_mft_mirror+0x242/0x1ed0 [ 63.932909][ T2438] ? should_fail_request+0x80/0x80 [ 63.938022][ T2438] ? preempt_count_sub+0x160/0x160 [ 63.943128][ T2438] ? ntfs_mft_bitmap_extend_allocation_nolock+0x1f10/0x1f10 [ 63.950433][ T2438] write_mft_record_nolock+0x1977/0x1da0 [ 63.956089][ T2438] ? mark_held_locks+0x9f/0xe0 [ 63.960881][ T2438] ? ntfs_sync_mft_mirror+0x1ed0/0x1ed0 [ 63.966452][ T2438] ? preempt_count_sub+0x160/0x160 [ 63.971592][ T2438] write_mft_record+0x14b/0x380 [ 63.976461][ T2438] __ntfs_write_inode+0x91b/0xc30 [ 63.981505][ T2438] __writeback_single_inode+0xa91/0xe90 [ 63.987054][ T2438] ? __mark_inode_dirty+0xd60/0xd60 [ 63.992263][ T2438] ? _raw_spin_unlock+0x28/0x40 [ 63.997124][ T2438] ? wbc_attach_and_unlock_inode+0x561/0x910 [ 64.003119][ T2438] writeback_sb_inodes+0x599/0x1080 [ 64.008321][ T2438] ? sync_inode_metadata+0xe0/0xe0 [ 64.013435][ T2438] ? do_raw_spin_lock+0x12e/0x2b0 [ 64.018465][ T2438] ? move_expired_inodes+0x59e/0x850 [ 64.023768][ T2438] __writeback_inodes_wb+0xff/0x2d0 [ 64.028990][ T2438] ? writeback_sb_inodes+0x1080/0x1080 [ 64.034468][ T2438] ? queue_io+0x3ed/0x4e0 [ 64.035253][ T5124] syz-executor166 (5124): drop_caches: 1 [ 64.038788][ T2438] wb_writeback+0x7f8/0xaa0 [ 64.038810][ T2438] ? __writeback_inodes_wb+0x2d0/0x2d0 [ 64.038831][ T2438] ? get_nr_dirty_inodes+0x176/0x1e0 [ 64.054432][ T5122] syz-executor166 (5122): drop_caches: 1 [ 64.059595][ T2438] wb_workfn+0x87c/0xfe0 [pid 5127] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5124] <... sendfile resumed> => [103], 15) = 15 [pid 5124] memfd_create("syzkaller", 0) = 5 [pid 5124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5124] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5122] <... sendfile resumed> => [103], 15) = 15 [pid 5122] memfd_create("syzkaller", 0) = 5 [ 64.059615][ T2438] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 64.059645][ T2438] ? inode_wait_for_writeback+0x30/0x30 [ 64.059664][ T2438] ? lock_sync+0x190/0x190 [ 64.085423][ T2438] ? lock_sync+0x190/0x190 [ 64.089870][ T2438] process_one_work+0x886/0x15d0 [ 64.094831][ T2438] ? lock_sync+0x190/0x190 [ 64.099254][ T2438] ? workqueue_congested+0x300/0x300 [ 64.104558][ T2438] ? assign_work+0x1a0/0x250 [ 64.109160][ T2438] worker_thread+0x8b9/0x1290 [ 64.113841][ T2438] ? __kthread_parkme+0x14b/0x220 [pid 5122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5127] <... open resumed>) = 5 [pid 5126] <... open resumed>) = 5 [pid 5125] <... open resumed>) = 5 [pid 5124] <... write resumed>) = 2097152 [pid 5123] <... open resumed>) = 5 [pid 5127] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5126] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5125] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5124] munmap(0x7f299346a000, 138412032 [pid 5123] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5122] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5127] <... pwritev resumed>) = 103 [pid 5126] <... pwritev resumed>) = 103 [pid 5125] <... pwritev resumed>) = 103 [pid 5124] <... munmap resumed>) = 0 [pid 5123] <... pwritev resumed>) = 103 [pid 5127] exit_group(0 [pid 5126] exit_group(0 [pid 5124] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5127] <... exit_group resumed>) = ? [pid 5126] <... exit_group resumed>) = ? [pid 5125] exit_group(0 [pid 5124] <... openat resumed>) = 6 [pid 5123] exit_group(0 [pid 5127] +++ exited with 0 +++ [pid 5126] +++ exited with 0 +++ [pid 5125] <... exit_group resumed>) = ? [pid 5123] <... exit_group resumed>) = ? [pid 5124] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5124] ioctl(6, LOOP_CLR_FD) = 0 [pid 5125] +++ exited with 0 +++ [pid 5123] +++ exited with 0 +++ [pid 5122] <... write resumed>) = 2097152 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5122] munmap(0x7f299346a000, 138412032 [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5125, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5123, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5127, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5124] ioctl(6, LOOP_SET_FD, 5 [pid 5071] restart_syscall(<... resuming interrupted clone ...> [pid 5070] <... openat resumed>) = 3 [pid 5124] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5122] <... munmap resumed>) = 0 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5071] <... restart_syscall resumed>) = 0 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5124] close(6 [pid 5070] <... ioctl resumed>) = 0 [pid 5070] close(3 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5070] <... close resumed>) = 0 [pid 5071] <... openat resumed>) = 3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5124] <... close resumed>) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5071] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5128 attached [pid 5124] close(5 [pid 5122] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5076] <... openat resumed>) = 3 [pid 5072] <... openat resumed>) = 3 [pid 5071] <... ioctl resumed>) = 0 [pid 5128] set_robust_list(0x55555677f660, 24 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5071] close(3 [pid 5128] <... set_robust_list resumed>) = 0 [pid 5122] <... openat resumed>) = 6 [pid 5076] <... ioctl resumed>) = 0 [ 64.118874][ T2438] ? process_one_work+0x15d0/0x15d0 [ 64.124090][ T2438] kthread+0x2c6/0x3a0 [ 64.128171][ T2438] ? _raw_spin_unlock_irq+0x23/0x50 [ 64.133385][ T2438] ? kthread_complete_and_exit+0x40/0x40 [ 64.139032][ T2438] ret_from_fork+0x45/0x80 [ 64.143466][ T2438] ? kthread_complete_and_exit+0x40/0x40 [ 64.149115][ T2438] ret_from_fork_asm+0x11/0x20 [ 64.153920][ T2438] [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5071] <... close resumed>) = 0 [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5122] ioctl(6, LOOP_SET_FD, 5 [pid 5076] close(3 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5128 [pid 5076] <... close resumed>) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5129 attached [pid 5128] <... prctl resumed>) = 0 [pid 5122] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5129 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5130 [pid 5128] setpgid(0, 0 [pid 5122] ioctl(6, LOOP_CLR_FD [pid 5072] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 5130 attached [pid 5129] set_robust_list(0x55555677f660, 24 [pid 5128] <... setpgid resumed>) = 0 [pid 5122] <... ioctl resumed>) = 0 [pid 5130] set_robust_list(0x55555677f660, 24 [pid 5129] <... set_robust_list resumed>) = 0 [pid 5072] close(3 [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5130] <... set_robust_list resumed>) = 0 [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5072] <... close resumed>) = 0 [pid 5130] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5129] <... prctl resumed>) = 0 [pid 5128] <... openat resumed>) = 3 [pid 5130] <... prctl resumed>) = 0 [pid 5129] setpgid(0, 0 [pid 5128] write(3, "1000", 4 [pid 5122] ioctl(6, LOOP_SET_FD, 5 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5130] setpgid(0, 0 [pid 5129] <... setpgid resumed>) = 0 [pid 5128] <... write resumed>) = 4 [pid 5130] <... setpgid resumed>) = 0 [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5128] close(3 [pid 5130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5128] <... close resumed>) = 0 [pid 5122] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5128] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5122] close(6 [pid 5129] <... openat resumed>) = 3 [pid 5122] <... close resumed>) = 0 ./strace-static-x86_64: Process 5131 attached [pid 5130] <... openat resumed>) = 3 [pid 5129] write(3, "1000", 4 [pid 5128] <... openat resumed>) = 3 [pid 5122] close(5 [pid 5131] set_robust_list(0x55555677f660, 24) = 0 [pid 5131] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5131] setpgid(0, 0) = 0 [pid 5131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5130] write(3, "1000", 4 [pid 5129] <... write resumed>) = 4 [pid 5128] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5131 [pid 5130] <... write resumed>) = 4 [pid 5129] close(3 [pid 5122] <... close resumed>) = 0 [pid 5128] <... openat resumed>) = 4 [pid 5129] <... close resumed>) = 0 [pid 5130] close(3 [pid 5131] write(3, "1000", 4 [pid 5130] <... close resumed>) = 0 [pid 5129] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5128] sendfile(4, 3, [88] [pid 5131] <... write resumed>) = 4 [pid 5131] close(3) = 0 [pid 5131] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5130] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5129] <... openat resumed>) = 3 [pid 5131] <... openat resumed>) = 3 [pid 5130] <... openat resumed>) = 3 [pid 5129] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5131] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5131] sendfile(4, 3, [88] [pid 5130] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5129] sendfile(4, 3, [88] [pid 5124] <... close resumed>) = 0 [pid 5130] <... openat resumed>) = 4 [pid 5130] sendfile(4, 3, [88] [pid 5122] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5124] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5122] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5124] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5122] <... pwritev resumed>) = 103 [pid 5122] exit_group(0) = ? [pid 5124] <... pwritev resumed>) = 103 [pid 5124] exit_group(0) = ? [pid 5122] +++ exited with 0 +++ [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5122, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5124] +++ exited with 0 +++ [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5124, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5069] ioctl(3, LOOP_CLR_FD) = 0 [pid 5069] close(3) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5132 attached [pid 5078] <... openat resumed>) = 3 [pid 5132] set_robust_list(0x55555677f660, 24) = 0 [ 64.297445][ T5131] syz-executor166 (5131): drop_caches: 1 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5132 [pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5078] <... ioctl resumed>) = 0 [pid 5132] <... prctl resumed>) = 0 [pid 5132] setpgid(0, 0) = 0 [pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5132] write(3, "1000", 4) = 4 [pid 5132] close(3 [pid 5078] close(3 [pid 5132] <... close resumed>) = 0 [pid 5078] <... close resumed>) = 0 [pid 5132] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5132] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5132] sendfile(4, 3, [88] [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5133 attached [pid 5133] set_robust_list(0x55555677f660, 24) = 0 [pid 5133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5133 [pid 5133] setpgid(0, 0) = 0 [pid 5133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5133] write(3, "1000", 4) = 4 [pid 5133] close(3) = 0 [pid 5133] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5133] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 64.346830][ T5129] syz-executor166 (5129): drop_caches: 1 [ 64.358150][ T5128] syz-executor166 (5128): drop_caches: 1 [ 64.371182][ T5130] syz-executor166 (5130): drop_caches: 1 [pid 5133] sendfile(4, 3, [88] [pid 5131] <... sendfile resumed> => [103], 15) = 15 [pid 5131] memfd_create("syzkaller", 0) = 5 [pid 5131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 64.431172][ T5131] syz-executor166 (5131): drop_caches: 1 [ 64.446515][ T5132] syz-executor166 (5132): drop_caches: 1 [pid 5131] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5130] <... sendfile resumed> => [103], 15) = 15 [pid 5130] memfd_create("syzkaller", 0 [pid 5129] <... sendfile resumed> => [103], 15) = 15 [pid 5128] <... sendfile resumed> => [103], 15) = 15 [ 64.496736][ T5129] syz-executor166 (5129): drop_caches: 1 [ 64.504247][ T5130] syz-executor166 (5130): drop_caches: 1 [ 64.514460][ T5128] syz-executor166 (5128): drop_caches: 1 [pid 5130] <... memfd_create resumed>) = 5 [pid 5129] memfd_create("syzkaller", 0 [pid 5128] memfd_create("syzkaller", 0 [pid 5130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5129] <... memfd_create resumed>) = 5 [pid 5131] <... write resumed>) = 2097152 [pid 5130] <... mmap resumed>) = 0x7f299346a000 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5128] <... memfd_create resumed>) = 5 [pid 5129] <... mmap resumed>) = 0x7f299346a000 [pid 5131] munmap(0x7f299346a000, 138412032 [pid 5128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5131] <... munmap resumed>) = 0 [pid 5128] <... mmap resumed>) = 0x7f299346a000 [pid 5132] <... sendfile resumed> => [103], 15) = 15 [pid 5131] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5131] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5131] ioctl(6, LOOP_CLR_FD) = 0 [pid 5131] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5131] close(6) = 0 [pid 5132] memfd_create("syzkaller", 0 [pid 5131] close(5 [pid 5132] <... memfd_create resumed>) = 5 [pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5129] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5132] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5131] <... close resumed>) = 0 [ 64.579722][ T5133] syz-executor166 (5133): drop_caches: 1 [ 64.606061][ T5132] syz-executor166 (5132): drop_caches: 1 [pid 5130] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5128] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5132] <... write resumed>) = 2097152 [pid 5129] <... write resumed>) = 2097152 [pid 5133] <... sendfile resumed> => [103], 15) = 15 [pid 5132] munmap(0x7f299346a000, 138412032 [pid 5131] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5129] munmap(0x7f299346a000, 138412032 [pid 5130] <... write resumed>) = 2097152 [pid 5130] munmap(0x7f299346a000, 138412032) = 0 [pid 5133] memfd_create("syzkaller", 0 [pid 5132] <... munmap resumed>) = 0 [pid 5131] <... open resumed>) = 5 [pid 5130] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5129] <... munmap resumed>) = 0 [pid 5128] <... write resumed>) = 2097152 [pid 5133] <... memfd_create resumed>) = 5 [pid 5132] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5131] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5130] <... openat resumed>) = 6 [pid 5128] munmap(0x7f299346a000, 138412032 [pid 5132] <... openat resumed>) = 6 [pid 5132] ioctl(6, LOOP_SET_FD, 5 [pid 5133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5132] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5130] ioctl(6, LOOP_SET_FD, 5 [pid 5132] ioctl(6, LOOP_CLR_FD [pid 5133] <... mmap resumed>) = 0x7f299346a000 [pid 5132] <... ioctl resumed>) = 0 [pid 5130] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5130] ioctl(6, LOOP_CLR_FD [pid 5131] <... pwritev resumed>) = 103 [pid 5129] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5128] <... munmap resumed>) = 0 [pid 5130] <... ioctl resumed>) = 0 [pid 5131] exit_group(0 [pid 5133] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5131] <... exit_group resumed>) = ? [pid 5128] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5129] <... openat resumed>) = 6 [pid 5129] ioctl(6, LOOP_SET_FD, 5 [pid 5132] ioctl(6, LOOP_SET_FD, 5 [pid 5129] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5132] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5132] close(6 [pid 5130] ioctl(6, LOOP_SET_FD, 5 [pid 5129] ioctl(6, LOOP_CLR_FD [pid 5132] <... close resumed>) = 0 [pid 5132] close(5 [pid 5133] <... write resumed>) = 2097152 [pid 5131] +++ exited with 0 +++ [pid 5130] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5128] <... openat resumed>) = 6 [pid 5130] close(6 [pid 5128] ioctl(6, LOOP_SET_FD, 5 [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5131, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5128] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5129] <... ioctl resumed>) = 0 [pid 5133] munmap(0x7f299346a000, 138412032 [pid 5128] ioctl(6, LOOP_CLR_FD [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5128] <... ioctl resumed>) = 0 [pid 5072] <... openat resumed>) = 3 [pid 5129] ioctl(6, LOOP_SET_FD, 5 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5129] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5129] close(6 [pid 5072] <... ioctl resumed>) = 0 [pid 5129] <... close resumed>) = 0 [ 64.701761][ T5133] syz-executor166 (5133): drop_caches: 1 [pid 5129] close(5 [pid 5133] <... munmap resumed>) = 0 [pid 5130] <... close resumed>) = 0 [pid 5072] close(3 [pid 5133] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5130] close(5 [pid 5128] ioctl(6, LOOP_SET_FD, 5 [pid 5072] <... close resumed>) = 0 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5128] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5132] <... close resumed>) = 0 [pid 5132] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5132] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5134 [pid 5128] close(6./strace-static-x86_64: Process 5134 attached [pid 5133] <... openat resumed>) = 6 [pid 5129] <... close resumed>) = 0 [pid 5128] <... close resumed>) = 0 [pid 5133] ioctl(6, LOOP_SET_FD, 5 [pid 5128] close(5 [pid 5133] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5129] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5129] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5133] ioctl(6, LOOP_CLR_FD) = 0 [pid 5133] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5133] close(6) = 0 [pid 5133] close(5 [pid 5134] set_robust_list(0x55555677f660, 24) = 0 [pid 5134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5134] setpgid(0, 0) = 0 [pid 5132] <... pwritev resumed>) = 103 [pid 5134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5132] exit_group(0 [pid 5134] <... openat resumed>) = 3 [pid 5132] <... exit_group resumed>) = ? [pid 5133] <... close resumed>) = 0 [pid 5133] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5133] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5129] <... pwritev resumed>) = 103 [pid 5129] exit_group(0) = ? [pid 5133] <... pwritev resumed>) = 103 [pid 5133] exit_group(0) = ? [pid 5134] write(3, "1000", 4 [pid 5133] +++ exited with 0 +++ [pid 5132] +++ exited with 0 +++ [pid 5129] +++ exited with 0 +++ [pid 5134] <... write resumed>) = 4 [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5133, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=10 /* 0.10 s */} --- [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5132, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5078] <... openat resumed>) = 3 [pid 5071] <... openat resumed>) = 3 [pid 5069] <... openat resumed>) = 3 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5078] <... ioctl resumed>) = 0 [pid 5071] <... ioctl resumed>) = 0 [pid 5069] <... ioctl resumed>) = 0 [pid 5078] close(3 [pid 5071] close(3 [pid 5069] close(3 [pid 5134] close(3 [pid 5078] <... close resumed>) = 0 [pid 5071] <... close resumed>) = 0 [pid 5069] <... close resumed>) = 0 [pid 5134] <... close resumed>) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5136 attached ./strace-static-x86_64: Process 5135 attached [pid 5134] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5136] set_robust_list(0x55555677f660, 24 [pid 5135] set_robust_list(0x55555677f660, 24 [pid 5134] <... openat resumed>) = 3 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5135 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5136 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5137 ./strace-static-x86_64: Process 5137 attached [pid 5136] <... set_robust_list resumed>) = 0 [pid 5135] <... set_robust_list resumed>) = 0 [pid 5134] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5137] set_robust_list(0x55555677f660, 24 [pid 5136] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5135] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5134] <... openat resumed>) = 4 [pid 5137] <... set_robust_list resumed>) = 0 [pid 5136] <... prctl resumed>) = 0 [pid 5135] <... prctl resumed>) = 0 [pid 5134] sendfile(4, 3, [88] [pid 5130] <... close resumed>) = 0 [pid 5137] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5136] setpgid(0, 0 [pid 5135] setpgid(0, 0 [pid 5136] <... setpgid resumed>) = 0 [pid 5136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5130] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5137] <... prctl resumed>) = 0 [pid 5136] <... openat resumed>) = 3 [pid 5135] <... setpgid resumed>) = 0 [pid 5136] write(3, "1000", 4 [pid 5135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5137] setpgid(0, 0 [pid 5130] <... open resumed>) = 5 [pid 5137] <... setpgid resumed>) = 0 [pid 5136] <... write resumed>) = 4 [pid 5135] <... openat resumed>) = 3 [pid 5136] close(3) = 0 [pid 5136] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5136] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5136] <... openat resumed>) = 4 [pid 5135] write(3, "1000", 4) = 4 [pid 5137] <... openat resumed>) = 3 [pid 5137] write(3, "1000", 4 [pid 5136] sendfile(4, 3, [88] [pid 5135] close(3 [pid 5130] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5128] <... close resumed>) = 0 [pid 5137] <... write resumed>) = 4 [pid 5135] <... close resumed>) = 0 [pid 5128] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5137] close(3 [pid 5135] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5128] <... open resumed>) = 5 [pid 5137] <... close resumed>) = 0 [pid 5135] <... openat resumed>) = 3 [pid 5128] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5135] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5137] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5135] <... openat resumed>) = 4 [pid 5137] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5135] sendfile(4, 3, [88] [pid 5137] <... openat resumed>) = 4 [pid 5137] sendfile(4, 3, [88] [pid 5130] <... pwritev resumed>) = 103 [pid 5130] exit_group(0) = ? [pid 5130] +++ exited with 0 +++ [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5130, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD) = 0 [pid 5128] <... pwritev resumed>) = 103 [pid 5128] exit_group(0 [pid 5076] close(3 [pid 5128] <... exit_group resumed>) = ? [pid 5076] <... close resumed>) = 0 [pid 5128] +++ exited with 0 +++ [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555677f650) = 5139 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- ./strace-static-x86_64: Process 5139 attached [pid 5139] set_robust_list(0x55555677f660, 24) = 0 [pid 5139] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5140 attached , child_tidptr=0x55555677f650) = 5140 [pid 5140] set_robust_list(0x55555677f660, 24) = 0 [pid 5140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5140] setpgid(0, 0) = 0 [pid 5140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5140] write(3, "1000", 4) = 4 [pid 5140] close(3) = 0 [pid 5140] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5140] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 64.922496][ T5137] syz-executor166 (5137): drop_caches: 1 [pid 5140] sendfile(4, 3, [88] [pid 5139] <... prctl resumed>) = 0 [pid 5139] setpgid(0, 0) = 0 [pid 5139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5139] write(3, "1000", 4) = 4 [pid 5139] close(3) = 0 [pid 5139] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5139] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5139] sendfile(4, 3, [88] [pid 5137] <... sendfile resumed> => [103], 15) = 15 [ 65.017178][ T5136] syz-executor166 (5136): drop_caches: 1 [ 65.027533][ T5135] syz-executor166 (5135): drop_caches: 1 [ 65.044966][ T5137] syz-executor166 (5137): drop_caches: 1 [ 65.055435][ T5134] syz-executor166 (5134): drop_caches: 1 [pid 5137] memfd_create("syzkaller", 0) = 5 [pid 5137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 65.084206][ T5140] syz-executor166 (5140): drop_caches: 1 [pid 5137] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5135] <... sendfile resumed> => [103], 15) = 15 [pid 5134] <... sendfile resumed> => [103], 15) = 15 [pid 5135] memfd_create("syzkaller", 0) = 5 [pid 5134] memfd_create("syzkaller", 0 [pid 5135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5136] <... sendfile resumed> => [103], 15) = 15 [pid 5134] <... memfd_create resumed>) = 5 [pid 5140] <... sendfile resumed> => [103], 15) = 15 [pid 5136] memfd_create("syzkaller", 0 [pid 5135] <... mmap resumed>) = 0x7f299346a000 [pid 5134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5137] <... write resumed>) = 2097152 [pid 5136] <... memfd_create resumed>) = 5 [pid 5140] memfd_create("syzkaller", 0 [pid 5137] munmap(0x7f299346a000, 138412032 [pid 5136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5135] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5140] <... memfd_create resumed>) = 5 [pid 5136] <... mmap resumed>) = 0x7f299346a000 [pid 5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 65.136184][ T5136] syz-executor166 (5136): drop_caches: 1 [ 65.147942][ T5139] syz-executor166 (5139): drop_caches: 1 [ 65.153544][ T5134] syz-executor166 (5134): drop_caches: 1 [ 65.161248][ T5135] syz-executor166 (5135): drop_caches: 1 [ 65.179148][ T5140] syz-executor166 (5140): drop_caches: 1 [pid 5137] <... munmap resumed>) = 0 [pid 5134] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5137] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5140] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5137] <... openat resumed>) = 6 [pid 5136] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5135] <... write resumed>) = 2097152 [pid 5137] ioctl(6, LOOP_SET_FD, 5 [pid 5135] munmap(0x7f299346a000, 138412032 [pid 5137] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5137] ioctl(6, LOOP_CLR_FD) = 0 [pid 5140] <... write resumed>) = 2097152 [pid 5135] <... munmap resumed>) = 0 [pid 5134] <... write resumed>) = 2097152 [pid 5137] ioctl(6, LOOP_SET_FD, 5 [pid 5135] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5137] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5135] <... openat resumed>) = 6 [pid 5134] munmap(0x7f299346a000, 138412032 [pid 5137] close(6 [pid 5135] ioctl(6, LOOP_SET_FD, 5 [pid 5137] <... close resumed>) = 0 [pid 5136] <... write resumed>) = 2097152 [pid 5135] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5137] close(5 [pid 5135] ioctl(6, LOOP_CLR_FD) = 0 [pid 5136] munmap(0x7f299346a000, 138412032 [pid 5135] ioctl(6, LOOP_SET_FD, 5 [pid 5140] munmap(0x7f299346a000, 138412032) = 0 [pid 5136] <... munmap resumed>) = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5135] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5140] <... openat resumed>) = 6 [pid 5135] close(6 [pid 5140] ioctl(6, LOOP_SET_FD, 5 [pid 5135] <... close resumed>) = 0 [pid 5140] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5136] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5135] close(5 [pid 5140] ioctl(6, LOOP_CLR_FD) = 0 [pid 5136] <... openat resumed>) = 6 [pid 5136] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5140] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5140] close(6) = 0 [pid 5140] close(5) = 0 [pid 5137] <... close resumed>) = 0 [pid 5134] <... munmap resumed>) = 0 [pid 5136] ioctl(6, LOOP_CLR_FD) = 0 [pid 5139] <... sendfile resumed> => [103], 15) = 15 [pid 5134] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5136] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5134] <... openat resumed>) = 6 [pid 5136] close(6 [pid 5134] ioctl(6, LOOP_SET_FD, 5 [pid 5136] <... close resumed>) = 0 [pid 5139] memfd_create("syzkaller", 0 [pid 5137] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5136] close(5 [pid 5134] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5139] <... memfd_create resumed>) = 5 [pid 5139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5134] ioctl(6, LOOP_CLR_FD [pid 5137] <... open resumed>) = 5 [pid 5137] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5140] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5140] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5134] <... ioctl resumed>) = 0 [pid 5134] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5134] close(6) = 0 [pid 5135] <... close resumed>) = 0 [pid 5135] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5140] <... pwritev resumed>) = 103 [pid 5137] <... pwritev resumed>) = 103 [pid 5134] close(5 [pid 5140] exit_group(0 [pid 5135] <... open resumed>) = 5 [pid 5140] <... exit_group resumed>) = ? [ 65.263274][ T5139] syz-executor166 (5139): drop_caches: 1 [pid 5140] +++ exited with 0 +++ [pid 5139] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5140, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5137] exit_group(0 [pid 5135] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452./strace-static-x86_64: Process 5141 attached [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5141 [pid 5141] set_robust_list(0x55555677f660, 24 [pid 5137] <... exit_group resumed>) = ? [pid 5141] <... set_robust_list resumed>) = 0 [pid 5141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5141] setpgid(0, 0) = 0 [pid 5141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5141] write(3, "1000", 4) = 4 [pid 5141] close(3) = 0 [pid 5141] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5137] +++ exited with 0 +++ [pid 5141] <... openat resumed>) = 3 [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5137, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=7 /* 0.07 s */} --- [pid 5141] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5141] sendfile(4, 3, [88] [pid 5136] <... close resumed>) = 0 [pid 5135] <... pwritev resumed>) = 103 [pid 5134] <... close resumed>) = 0 [pid 5136] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5135] exit_group(0 [pid 5134] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5139] <... write resumed>) = 2097152 [pid 5135] <... exit_group resumed>) = ? [pid 5134] <... open resumed>) = 5 [pid 5134] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5069] ioctl(3, LOOP_CLR_FD) = 0 [pid 5069] close(3) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5142 attached [pid 5142] set_robust_list(0x55555677f660, 24) = 0 [pid 5142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5142] setpgid(0, 0) = 0 [pid 5142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5142] write(3, "1000", 4 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5142 [pid 5142] <... write resumed>) = 4 [pid 5142] close(3 [pid 5139] munmap(0x7f299346a000, 138412032 [pid 5136] <... open resumed>) = 5 [pid 5135] +++ exited with 0 +++ [pid 5134] <... pwritev resumed>) = 103 [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5135, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5142] <... close resumed>) = 0 [pid 5142] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5134] exit_group(0 [pid 5142] <... openat resumed>) = 3 [pid 5136] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5134] <... exit_group resumed>) = ? [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5142] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5078] <... openat resumed>) = 3 [pid 5142] <... openat resumed>) = 4 [pid 5139] <... munmap resumed>) = 0 [pid 5136] <... pwritev resumed>) = 103 [pid 5134] +++ exited with 0 +++ [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5142] sendfile(4, 3, [88] [pid 5078] <... ioctl resumed>) = 0 [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5134, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [pid 5078] close(3 [pid 5136] exit_group(0 [pid 5078] <... close resumed>) = 0 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5139] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5072] <... openat resumed>) = 3 [pid 5136] <... exit_group resumed>) = ? [pid 5072] ioctl(3, LOOP_CLR_FD) = 0 [pid 5072] close(3) = 0 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5136] +++ exited with 0 +++ [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5136, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5071] restart_syscall(<... resuming interrupted clone ...> [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5143 ./strace-static-x86_64: Process 5144 attached ./strace-static-x86_64: Process 5143 attached [pid 5139] <... openat resumed>) = 6 [pid 5071] <... restart_syscall resumed>) = 0 [pid 5144] set_robust_list(0x55555677f660, 24 [pid 5143] set_robust_list(0x55555677f660, 24 [pid 5139] ioctl(6, LOOP_SET_FD, 5 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5144 [pid 5144] <... set_robust_list resumed>) = 0 [pid 5143] <... set_robust_list resumed>) = 0 [pid 5139] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5144] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5139] ioctl(6, LOOP_CLR_FD [pid 5144] <... prctl resumed>) = 0 [pid 5143] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5139] <... ioctl resumed>) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5144] setpgid(0, 0 [pid 5143] <... prctl resumed>) = 0 [pid 5071] <... openat resumed>) = 3 [pid 5144] <... setpgid resumed>) = 0 [pid 5143] setpgid(0, 0 [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5143] <... setpgid resumed>) = 0 [pid 5071] <... ioctl resumed>) = 0 [pid 5071] close(3 [pid 5139] ioctl(6, LOOP_SET_FD, 5 [pid 5071] <... close resumed>) = 0 [pid 5143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5144] <... openat resumed>) = 3 [pid 5139] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5144] write(3, "1000", 4 [pid 5143] <... openat resumed>) = 3 [pid 5139] close(6) = 0 [pid 5144] <... write resumed>) = 4 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5145 [pid 5143] write(3, "1000", 4 [pid 5144] close(3 [pid 5143] <... write resumed>) = 4 [pid 5139] close(5./strace-static-x86_64: Process 5145 attached [pid 5143] close(3 [pid 5139] <... close resumed>) = 0 [pid 5144] <... close resumed>) = 0 [pid 5145] set_robust_list(0x55555677f660, 24) = 0 [pid 5144] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5139] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5143] <... close resumed>) = 0 [pid 5145] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5144] <... openat resumed>) = 3 [pid 5143] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5139] <... open resumed>) = 5 [pid 5145] <... prctl resumed>) = 0 [pid 5143] <... openat resumed>) = 3 [pid 5139] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5145] setpgid(0, 0) = 0 [pid 5145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5144] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5143] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5145] write(3, "1000", 4) = 4 [pid 5143] <... openat resumed>) = 4 [pid 5145] close(3 [pid 5143] sendfile(4, 3, [88] [pid 5145] <... close resumed>) = 0 [pid 5145] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5145] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5145] sendfile(4, 3, [88] [pid 5144] <... openat resumed>) = 4 [pid 5144] sendfile(4, 3, [88] [pid 5139] <... pwritev resumed>) = 103 [pid 5139] exit_group(0) = ? [pid 5139] +++ exited with 0 +++ [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5139, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=12 /* 0.12 s */} --- [pid 5076] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD) = 0 [pid 5076] close(3) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555677f650) = 5146 ./strace-static-x86_64: Process 5146 attached [pid 5146] set_robust_list(0x55555677f660, 24) = 0 [pid 5146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5146] setpgid(0, 0) = 0 [pid 5146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5146] write(3, "1000", 4) = 4 [ 65.394063][ T5141] syz-executor166 (5141): drop_caches: 1 [pid 5146] close(3) = 0 [pid 5146] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5146] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 65.533575][ T5142] syz-executor166 (5142): drop_caches: 1 [ 65.540851][ T5145] syz-executor166 (5145): drop_caches: 1 [ 65.544794][ T5144] syz-executor166 (5144): drop_caches: 1 [ 65.558824][ T5143] syz-executor166 (5143): drop_caches: 1 [ 65.561743][ T5146] syz-executor166 (5146): drop_caches: 1 [pid 5146] sendfile(4, 3, [88] [pid 5141] <... sendfile resumed> => [103], 15) = 15 [ 65.585731][ T5141] syz-executor166 (5141): drop_caches: 1 [pid 5141] memfd_create("syzkaller", 0) = 5 [pid 5141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 65.674560][ T5142] syz-executor166 (5142): drop_caches: 1 [ 65.696615][ T5144] syz-executor166 (5144): drop_caches: 1 [ 65.705559][ T5143] syz-executor166 (5143): drop_caches: 1 [pid 5144] <... sendfile resumed> => [103], 15) = 15 [pid 5143] <... sendfile resumed> => [103], 15) = 15 [pid 5142] <... sendfile resumed> => [103], 15) = 15 [pid 5141] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5143] memfd_create("syzkaller", 0 [pid 5142] memfd_create("syzkaller", 0) = 5 [pid 5142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5144] memfd_create("syzkaller", 0 [pid 5143] <... memfd_create resumed>) = 5 [pid 5144] <... memfd_create resumed>) = 5 [pid 5143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5145] <... sendfile resumed> => [103], 15) = 15 [pid 5144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5143] <... mmap resumed>) = 0x7f299346a000 [pid 5146] <... sendfile resumed> => [103], 15) = 15 [ 65.727884][ T5146] syz-executor166 (5146): drop_caches: 1 [ 65.741986][ T5145] syz-executor166 (5145): drop_caches: 1 [pid 5145] memfd_create("syzkaller", 0 [pid 5144] <... mmap resumed>) = 0x7f299346a000 [pid 5146] memfd_create("syzkaller", 0 [pid 5143] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5142] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5141] <... write resumed>) = 2097152 [pid 5146] <... memfd_create resumed>) = 5 [pid 5146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5141] munmap(0x7f299346a000, 138412032) = 0 [pid 5145] <... memfd_create resumed>) = 5 [pid 5145] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5141] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5145] <... mmap resumed>) = 0x7f299346a000 [pid 5141] ioctl(6, LOOP_SET_FD, 5 [pid 5146] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5144] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5141] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5141] ioctl(6, LOOP_CLR_FD) = 0 [pid 5143] <... write resumed>) = 2097152 [pid 5142] <... write resumed>) = 2097152 [pid 5142] munmap(0x7f299346a000, 138412032 [pid 5141] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5143] munmap(0x7f299346a000, 138412032 [pid 5142] <... munmap resumed>) = 0 [pid 5141] close(6) = 0 [pid 5143] <... munmap resumed>) = 0 [pid 5141] close(5 [pid 5142] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5146] <... write resumed>) = 2097152 [pid 5145] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5143] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5142] <... openat resumed>) = 6 [pid 5141] <... close resumed>) = 0 [pid 5143] <... openat resumed>) = 6 [pid 5142] ioctl(6, LOOP_SET_FD, 5 [pid 5144] <... write resumed>) = 2097152 [pid 5143] ioctl(6, LOOP_SET_FD, 5 [pid 5142] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5143] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5142] ioctl(6, LOOP_CLR_FD [pid 5146] munmap(0x7f299346a000, 138412032) = 0 [pid 5146] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5145] <... write resumed>) = 2097152 [pid 5144] munmap(0x7f299346a000, 138412032 [pid 5143] ioctl(6, LOOP_CLR_FD [pid 5142] <... ioctl resumed>) = 0 [pid 5141] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5146] <... openat resumed>) = 6 [pid 5143] <... ioctl resumed>) = 0 [pid 5146] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5146] ioctl(6, LOOP_CLR_FD) = 0 [pid 5143] ioctl(6, LOOP_SET_FD, 5 [pid 5142] ioctl(6, LOOP_SET_FD, 5 [pid 5143] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5146] ioctl(6, LOOP_SET_FD, 5 [pid 5143] close(6 [pid 5142] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5146] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5145] munmap(0x7f299346a000, 138412032 [pid 5144] <... munmap resumed>) = 0 [pid 5143] <... close resumed>) = 0 [pid 5142] close(6 [pid 5141] <... open resumed>) = 5 [pid 5146] close(6 [pid 5145] <... munmap resumed>) = 0 [pid 5144] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5143] close(5 [pid 5142] <... close resumed>) = 0 [pid 5141] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5146] <... close resumed>) = 0 [pid 5144] <... openat resumed>) = 6 [pid 5142] close(5 [pid 5146] close(5 [pid 5144] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5144] ioctl(6, LOOP_CLR_FD) = 0 [pid 5145] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 6 [pid 5145] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5144] ioctl(6, LOOP_SET_FD, 5 [pid 5145] ioctl(6, LOOP_CLR_FD [pid 5144] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5145] <... ioctl resumed>) = 0 [pid 5144] close(6) = 0 [pid 5144] close(5 [pid 5142] <... close resumed>) = 0 [pid 5145] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5145] close(6) = 0 [pid 5145] close(5 [pid 5141] <... pwritev resumed>) = 103 [pid 5142] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5141] exit_group(0 [pid 5142] <... open resumed>) = 5 [pid 5141] <... exit_group resumed>) = ? [pid 5143] <... close resumed>) = 0 [pid 5141] +++ exited with 0 +++ [pid 5142] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5141, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5143] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5070] <... openat resumed>) = 3 [pid 5143] <... open resumed>) = 5 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5143] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5070] <... ioctl resumed>) = 0 [pid 5070] close(3) = 0 [pid 5142] <... pwritev resumed>) = 103 [pid 5142] exit_group(0) = ? [pid 5142] +++ exited with 0 +++ [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5142, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=10 /* 0.10 s */} --- [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5146] <... close resumed>) = 0 [pid 5145] <... close resumed>) = 0 [pid 5143] <... pwritev resumed>) = 103 [pid 5069] <... openat resumed>) = 3 [pid 5069] ioctl(3, LOOP_CLR_FD) = 0 [pid 5145] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000./strace-static-x86_64: Process 5147 attached [pid 5146] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5144] <... close resumed>) = 0 [pid 5143] exit_group(0 [pid 5069] close(3 [pid 5146] <... open resumed>) = 5 [pid 5143] <... exit_group resumed>) = ? [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5147 [pid 5147] set_robust_list(0x55555677f660, 24 [pid 5146] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5069] <... close resumed>) = 0 [pid 5147] <... set_robust_list resumed>) = 0 [pid 5145] <... open resumed>) = 5 [pid 5144] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5147] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5145] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5144] <... open resumed>) = 5 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5147] <... prctl resumed>) = 0 [pid 5144] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5147] setpgid(0, 0) = 0 [pid 5147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5147] write(3, "1000", 4./strace-static-x86_64: Process 5148 attached ) = 4 [pid 5148] set_robust_list(0x55555677f660, 24 [pid 5147] close(3 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5148 [pid 5147] <... close resumed>) = 0 [pid 5143] +++ exited with 0 +++ [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5143, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5148] <... set_robust_list resumed>) = 0 [pid 5147] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5148] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5147] <... openat resumed>) = 3 [pid 5148] <... prctl resumed>) = 0 [pid 5146] <... pwritev resumed>) = 103 [pid 5145] <... pwritev resumed>) = 103 [pid 5144] <... pwritev resumed>) = 103 [pid 5148] setpgid(0, 0 [pid 5146] exit_group(0 [pid 5144] exit_group(0 [pid 5148] <... setpgid resumed>) = 0 [pid 5147] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5146] <... exit_group resumed>) = ? [pid 5144] <... exit_group resumed>) = ? [pid 5148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5147] <... openat resumed>) = 4 [pid 5145] exit_group(0) = ? [pid 5148] <... openat resumed>) = 3 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5148] write(3, "1000", 4 [pid 5147] sendfile(4, 3, [88] [pid 5148] <... write resumed>) = 4 [pid 5072] <... openat resumed>) = 3 [pid 5146] +++ exited with 0 +++ [pid 5144] +++ exited with 0 +++ [pid 5148] close(3 [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5144, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5148] <... close resumed>) = 0 [pid 5072] <... ioctl resumed>) = 0 [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5146, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5148] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5076] restart_syscall(<... resuming interrupted clone ...> [pid 5072] close(3 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5145] +++ exited with 0 +++ [pid 5078] <... openat resumed>) = 3 [pid 5076] <... restart_syscall resumed>) = 0 [pid 5072] <... close resumed>) = 0 [pid 5148] <... openat resumed>) = 3 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5145, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5148] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5071] restart_syscall(<... resuming interrupted clone ...> [pid 5148] <... openat resumed>) = 4 [pid 5071] <... restart_syscall resumed>) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5071] ioctl(3, LOOP_CLR_FD) = 0 [pid 5071] close(3) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5148] sendfile(4, 3, [88] [pid 5078] <... ioctl resumed>) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5150 ./strace-static-x86_64: Process 5149 attached ./strace-static-x86_64: Process 5150 attached [pid 5149] set_robust_list(0x55555677f660, 24 [pid 5078] close(3 [pid 5076] <... openat resumed>) = 3 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5149 [pid 5149] <... set_robust_list resumed>) = 0 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5149] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5149] setpgid(0, 0) = 0 [pid 5149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5076] <... ioctl resumed>) = 0 [pid 5149] write(3, "1000", 4) = 4 [pid 5149] close(3) = 0 [pid 5149] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5149] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5149] sendfile(4, 3, [88] [pid 5078] <... close resumed>) = 0 [pid 5150] set_robust_list(0x55555677f660, 24 [pid 5076] close(3) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5150] <... set_robust_list resumed>) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5151 attached ./strace-static-x86_64: Process 5152 attached [pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5151 [pid 5150] <... prctl resumed>) = 0 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5152 [pid 5152] set_robust_list(0x55555677f660, 24) = 0 [pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5151] set_robust_list(0x55555677f660, 24 [pid 5150] setpgid(0, 0 [pid 5152] <... prctl resumed>) = 0 [pid 5151] <... set_robust_list resumed>) = 0 [pid 5150] <... setpgid resumed>) = 0 [pid 5152] setpgid(0, 0 [pid 5151] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5152] <... setpgid resumed>) = 0 [pid 5151] <... prctl resumed>) = 0 [pid 5152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5151] setpgid(0, 0 [pid 5150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5152] <... openat resumed>) = 3 [pid 5151] <... setpgid resumed>) = 0 [pid 5152] write(3, "1000", 4 [pid 5151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5152] <... write resumed>) = 4 [pid 5151] <... openat resumed>) = 3 [pid 5150] <... openat resumed>) = 3 [pid 5152] close(3 [pid 5151] write(3, "1000", 4 [pid 5150] write(3, "1000", 4 [pid 5152] <... close resumed>) = 0 [pid 5151] <... write resumed>) = 4 [pid 5152] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5151] close(3 [pid 5152] <... openat resumed>) = 3 [pid 5151] <... close resumed>) = 0 [pid 5152] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5151] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5152] <... openat resumed>) = 4 [pid 5151] <... openat resumed>) = 3 [pid 5151] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5151] sendfile(4, 3, [88] [pid 5152] sendfile(4, 3, [88] [pid 5150] <... write resumed>) = 4 [pid 5150] close(3) = 0 [pid 5150] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5150] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 66.110996][ T5147] syz-executor166 (5147): drop_caches: 1 [ 66.127466][ T5149] syz-executor166 (5149): drop_caches: 1 [ 66.129922][ T5148] syz-executor166 (5148): drop_caches: 1 [ 66.157055][ T5151] syz-executor166 (5151): drop_caches: 1 [pid 5150] sendfile(4, 3, [88] [pid 5148] <... sendfile resumed> => [103], 15) = 15 [pid 5147] <... sendfile resumed> => [103], 15) = 15 [pid 5148] memfd_create("syzkaller", 0) = 5 [pid 5148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 66.263242][ T5152] syz-executor166 (5152): drop_caches: 1 [ 66.282195][ T5148] syz-executor166 (5148): drop_caches: 1 [ 66.290285][ T5147] syz-executor166 (5147): drop_caches: 1 [ 66.296746][ T5150] syz-executor166 (5150): drop_caches: 1 [ 66.298715][ T5149] syz-executor166 (5149): drop_caches: 1 [pid 5147] memfd_create("syzkaller", 0 [pid 5149] <... sendfile resumed> => [103], 15) = 15 [pid 5148] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5147] <... memfd_create resumed>) = 5 [pid 5147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5149] memfd_create("syzkaller", 0) = 5 [pid 5149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5149] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5150] <... sendfile resumed> => [103], 15) = 15 [pid 5148] <... write resumed>) = 2097152 [pid 5147] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5150] memfd_create("syzkaller", 0 [pid 5148] munmap(0x7f299346a000, 138412032) = 0 [ 66.354876][ T5150] syz-executor166 (5150): drop_caches: 1 [ 66.379005][ T5151] syz-executor166 (5151): drop_caches: 1 [pid 5151] <... sendfile resumed> => [103], 15) = 15 [pid 5150] <... memfd_create resumed>) = 5 [pid 5148] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5152] <... sendfile resumed> => [103], 15) = 15 [pid 5151] memfd_create("syzkaller", 0 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5148] <... openat resumed>) = 6 [pid 5148] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5151] <... memfd_create resumed>) = 5 [pid 5148] ioctl(6, LOOP_CLR_FD [pid 5151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5148] <... ioctl resumed>) = 0 [pid 5150] <... mmap resumed>) = 0x7f299346a000 [pid 5152] memfd_create("syzkaller", 0 [pid 5147] <... write resumed>) = 2097152 [pid 5148] ioctl(6, LOOP_SET_FD, 5 [pid 5152] <... memfd_create resumed>) = 5 [pid 5148] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5147] munmap(0x7f299346a000, 138412032 [pid 5148] close(6) = 0 [pid 5148] close(5 [pid 5149] <... write resumed>) = 2097152 [pid 5151] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5147] <... munmap resumed>) = 0 [pid 5149] munmap(0x7f299346a000, 138412032 [pid 5152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5149] <... munmap resumed>) = 0 [ 66.403215][ T5152] syz-executor166 (5152): drop_caches: 1 [pid 5147] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5152] <... mmap resumed>) = 0x7f299346a000 [pid 5150] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5149] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5148] <... close resumed>) = 0 [pid 5147] <... openat resumed>) = 6 [pid 5147] ioctl(6, LOOP_SET_FD, 5 [pid 5149] <... openat resumed>) = 6 [pid 5147] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5151] <... write resumed>) = 2097152 [pid 5149] ioctl(6, LOOP_SET_FD, 5 [pid 5147] ioctl(6, LOOP_CLR_FD [pid 5149] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5149] ioctl(6, LOOP_CLR_FD [pid 5147] <... ioctl resumed>) = 0 [pid 5149] <... ioctl resumed>) = 0 [pid 5148] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5151] munmap(0x7f299346a000, 138412032 [pid 5148] <... open resumed>) = 5 [pid 5149] ioctl(6, LOOP_SET_FD, 5 [pid 5148] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5147] ioctl(6, LOOP_SET_FD, 5 [pid 5149] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5147] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5149] close(6 [pid 5147] close(6 [pid 5149] <... close resumed>) = 0 [pid 5147] <... close resumed>) = 0 [pid 5149] close(5 [pid 5147] close(5 [pid 5151] <... munmap resumed>) = 0 [pid 5148] <... pwritev resumed>) = 103 [pid 5147] <... close resumed>) = 0 [pid 5148] exit_group(0 [pid 5151] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5151] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5148] <... exit_group resumed>) = ? [pid 5151] ioctl(6, LOOP_CLR_FD) = 0 [pid 5151] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5151] close(6) = 0 [pid 5148] +++ exited with 0 +++ [pid 5151] close(5 [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5148, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5069] restart_syscall(<... resuming interrupted clone ...> [pid 5152] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5151] <... close resumed>) = 0 [pid 5147] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5069] <... restart_syscall resumed>) = 0 [pid 5149] <... close resumed>) = 0 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5069] ioctl(3, LOOP_CLR_FD) = 0 [pid 5150] <... write resumed>) = 2097152 [pid 5149] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5147] <... open resumed>) = 5 [pid 5069] close(3 [pid 5150] munmap(0x7f299346a000, 138412032 [pid 5149] <... open resumed>) = 5 [pid 5150] <... munmap resumed>) = 0 [pid 5149] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5147] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5069] <... close resumed>) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5150] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 5153 attached ) = 6 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5153 [pid 5153] set_robust_list(0x55555677f660, 24 [pid 5150] ioctl(6, LOOP_SET_FD, 5 [pid 5153] <... set_robust_list resumed>) = 0 [pid 5153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5153] setpgid(0, 0 [pid 5150] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5153] <... setpgid resumed>) = 0 [pid 5150] ioctl(6, LOOP_CLR_FD [pid 5149] <... pwritev resumed>) = 103 [pid 5147] <... pwritev resumed>) = 103 [pid 5153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5150] <... ioctl resumed>) = 0 [pid 5149] exit_group(0) = ? [pid 5147] exit_group(0 [pid 5149] +++ exited with 0 +++ [pid 5147] <... exit_group resumed>) = ? [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5149, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5072] restart_syscall(<... resuming interrupted clone ...> [pid 5151] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5153] <... openat resumed>) = 3 [pid 5147] +++ exited with 0 +++ [pid 5072] <... restart_syscall resumed>) = 0 [pid 5150] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5147, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5151] <... open resumed>) = 5 [pid 5150] close(6) = 0 [pid 5151] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5150] close(5 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5153] write(3, "1000", 4 [pid 5152] <... write resumed>) = 2097152 [pid 5072] <... openat resumed>) = 3 [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5070] <... openat resumed>) = 3 [pid 5072] <... ioctl resumed>) = 0 [pid 5153] <... write resumed>) = 4 [pid 5072] close(3 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5072] <... close resumed>) = 0 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 5154 attached [pid 5153] close(3 [pid 5070] close(3 [pid 5153] <... close resumed>) = 0 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5154 [pid 5070] <... close resumed>) = 0 [pid 5154] set_robust_list(0x55555677f660, 24 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5150] <... close resumed>) = 0 ./strace-static-x86_64: Process 5155 attached [pid 5154] <... set_robust_list resumed>) = 0 [pid 5153] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5152] munmap(0x7f299346a000, 138412032 [pid 5151] <... pwritev resumed>) = 103 [pid 5154] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5151] exit_group(0 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5155 [pid 5153] <... openat resumed>) = 3 [pid 5151] <... exit_group resumed>) = ? [pid 5154] <... prctl resumed>) = 0 [pid 5153] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5154] setpgid(0, 0) = 0 [pid 5153] <... openat resumed>) = 4 [pid 5151] +++ exited with 0 +++ [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5151, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5153] sendfile(4, 3, [88] [pid 5078] restart_syscall(<... resuming interrupted clone ...> [pid 5155] set_robust_list(0x55555677f660, 24 [pid 5150] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5078] <... restart_syscall resumed>) = 0 [pid 5155] <... set_robust_list resumed>) = 0 [pid 5150] <... open resumed>) = 5 [pid 5155] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5150] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5155] <... prctl resumed>) = 0 [pid 5152] <... munmap resumed>) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5155] setpgid(0, 0 [pid 5078] <... openat resumed>) = 3 [pid 5155] <... setpgid resumed>) = 0 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5078] <... ioctl resumed>) = 0 [pid 5155] <... openat resumed>) = 3 [pid 5150] <... pwritev resumed>) = 103 [pid 5078] close(3 [pid 5155] write(3, "1000", 4 [pid 5154] <... openat resumed>) = 3 [pid 5152] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5150] exit_group(0 [pid 5078] <... close resumed>) = 0 [pid 5154] write(3, "1000", 4) = 4 [pid 5154] close(3) = 0 [pid 5150] <... exit_group resumed>) = ? [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5154] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5150] +++ exited with 0 +++ [pid 5154] <... openat resumed>) = 3 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5156 [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5150, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5154] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5154] sendfile(4, 3, [88] [pid 5071] <... openat resumed>) = 3 [pid 5071] ioctl(3, LOOP_CLR_FD) = 0 [pid 5071] close(3) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555677f650) = 5157 ./strace-static-x86_64: Process 5157 attached [pid 5155] <... write resumed>) = 4 [pid 5152] <... openat resumed>) = 6 ./strace-static-x86_64: Process 5156 attached [pid 5157] set_robust_list(0x55555677f660, 24 [pid 5155] close(3 [pid 5152] ioctl(6, LOOP_SET_FD, 5 [pid 5157] <... set_robust_list resumed>) = 0 [pid 5156] set_robust_list(0x55555677f660, 24 [pid 5155] <... close resumed>) = 0 [pid 5152] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5156] <... set_robust_list resumed>) = 0 [pid 5157] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5156] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5155] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5152] ioctl(6, LOOP_CLR_FD [pid 5155] <... openat resumed>) = 3 [pid 5152] <... ioctl resumed>) = 0 [pid 5155] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5156] <... prctl resumed>) = 0 [pid 5155] <... openat resumed>) = 4 [pid 5156] setpgid(0, 0 [pid 5155] sendfile(4, 3, [88] [pid 5156] <... setpgid resumed>) = 0 [pid 5156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5152] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5152] close(6) = 0 [pid 5156] <... openat resumed>) = 3 [pid 5152] close(5) = 0 [pid 5152] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5152] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5156] write(3, "1000", 4 [pid 5152] <... pwritev resumed>) = 103 [pid 5152] exit_group(0) = ? [pid 5157] <... prctl resumed>) = 0 [pid 5156] <... write resumed>) = 4 [pid 5152] +++ exited with 0 +++ [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5152, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5156] close(3 [pid 5157] setpgid(0, 0 [pid 5156] <... close resumed>) = 0 [pid 5156] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5157] <... setpgid resumed>) = 0 [pid 5157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5157] <... openat resumed>) = 3 [pid 5157] write(3, "1000", 4 [pid 5076] <... openat resumed>) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5157] <... write resumed>) = 4 [pid 5157] close(3 [pid 5076] <... ioctl resumed>) = 0 [pid 5157] <... close resumed>) = 0 [pid 5156] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5076] close(3 [pid 5157] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5156] <... openat resumed>) = 4 [pid 5076] <... close resumed>) = 0 [pid 5157] <... openat resumed>) = 3 [pid 5156] sendfile(4, 3, [88] [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5157] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5158 ./strace-static-x86_64: Process 5158 attached [pid 5157] sendfile(4, 3, [88] [pid 5158] set_robust_list(0x55555677f660, 24) = 0 [pid 5158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5158] setpgid(0, 0) = 0 [pid 5158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5158] write(3, "1000", 4) = 4 [pid 5158] close(3) = 0 [pid 5158] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5158] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 66.676590][ T5155] syz-executor166 (5155): drop_caches: 1 [ 66.713377][ T5153] syz-executor166 (5153): drop_caches: 1 [pid 5158] sendfile(4, 3, [88] [pid 5155] <... sendfile resumed> => [103], 15) = 15 [pid 5155] memfd_create("syzkaller", 0) = 5 [pid 5155] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 66.755560][ T5156] syz-executor166 (5156): drop_caches: 1 [ 66.770331][ T5158] syz-executor166 (5158): drop_caches: 1 [ 66.772501][ T5154] syz-executor166 (5154): drop_caches: 1 [ 66.784724][ T5155] syz-executor166 (5155): drop_caches: 1 [ 66.786638][ T5157] syz-executor166 (5157): drop_caches: 1 [pid 5155] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [ 66.837594][ T5153] syz-executor166 (5153): drop_caches: 1 [pid 5153] <... sendfile resumed> => [103], 15) = 15 [pid 5158] <... sendfile resumed> => [103], 15) = 15 [pid 5155] munmap(0x7f299346a000, 138412032) = 0 [pid 5153] memfd_create("syzkaller", 0) = 5 [pid 5158] memfd_create("syzkaller", 0) = 5 [pid 5155] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5157] <... sendfile resumed> => [103], 15) = 15 [pid 5153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5155] <... openat resumed>) = 6 [pid 5154] <... sendfile resumed> => [103], 15) = 15 [pid 5158] <... mmap resumed>) = 0x7f299346a000 [pid 5155] ioctl(6, LOOP_SET_FD, 5 [pid 5153] <... mmap resumed>) = 0x7f299346a000 [pid 5157] memfd_create("syzkaller", 0 [pid 5156] <... sendfile resumed> => [103], 15) = 15 [pid 5155] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5154] memfd_create("syzkaller", 0 [pid 5155] ioctl(6, LOOP_CLR_FD [pid 5157] <... memfd_create resumed>) = 5 [pid 5155] <... ioctl resumed>) = 0 [pid 5154] <... memfd_create resumed>) = 5 [pid 5156] memfd_create("syzkaller", 0 [pid 5154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5155] ioctl(6, LOOP_SET_FD, 5 [pid 5157] <... mmap resumed>) = 0x7f299346a000 [pid 5155] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5154] <... mmap resumed>) = 0x7f299346a000 [pid 5155] close(6) = 0 [pid 5155] close(5 [pid 5156] <... memfd_create resumed>) = 5 [pid 5158] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5153] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5156] <... mmap resumed>) = 0x7f299346a000 [pid 5153] <... write resumed>) = 2097152 [ 66.878939][ T5158] syz-executor166 (5158): drop_caches: 1 [ 66.884875][ T5154] syz-executor166 (5154): drop_caches: 1 [ 66.893888][ T5157] syz-executor166 (5157): drop_caches: 1 [ 66.899968][ T5156] syz-executor166 (5156): drop_caches: 1 [pid 5157] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5155] <... close resumed>) = 0 [pid 5155] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5153] munmap(0x7f299346a000, 138412032 [pid 5158] <... write resumed>) = 2097152 [pid 5156] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5155] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5153] <... munmap resumed>) = 0 [pid 5154] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5153] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5157] <... write resumed>) = 2097152 [pid 5153] <... openat resumed>) = 6 [pid 5153] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5153] ioctl(6, LOOP_CLR_FD) = 0 [pid 5157] munmap(0x7f299346a000, 138412032 [pid 5155] <... pwritev resumed>) = 103 [pid 5155] exit_group(0) = ? [pid 5155] +++ exited with 0 +++ [pid 5153] ioctl(6, LOOP_SET_FD, 5 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5155, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 5153] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5158] munmap(0x7f299346a000, 138412032) = 0 [pid 5153] close(6 [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5153] <... close resumed>) = 0 [pid 5153] close(5 [pid 5158] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 6 [pid 5158] ioctl(6, LOOP_SET_FD, 5 [pid 5157] <... munmap resumed>) = 0 [pid 5156] <... write resumed>) = 2097152 [pid 5154] <... write resumed>) = 2097152 [pid 5070] <... openat resumed>) = 3 [pid 5158] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5157] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5158] ioctl(6, LOOP_CLR_FD) = 0 [pid 5156] munmap(0x7f299346a000, 138412032 [pid 5154] munmap(0x7f299346a000, 138412032 [pid 5153] <... close resumed>) = 0 [pid 5157] <... openat resumed>) = 6 [pid 5153] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5070] <... ioctl resumed>) = 0 [pid 5158] ioctl(6, LOOP_SET_FD, 5 [pid 5157] ioctl(6, LOOP_SET_FD, 5 [pid 5156] <... munmap resumed>) = 0 [pid 5153] <... open resumed>) = 5 [pid 5070] close(3 [pid 5158] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5157] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5156] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5153] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5070] <... close resumed>) = 0 [pid 5158] close(6 [pid 5157] ioctl(6, LOOP_CLR_FD [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5159 attached [pid 5158] <... close resumed>) = 0 [pid 5157] <... ioctl resumed>) = 0 [pid 5156] <... openat resumed>) = 6 [pid 5154] <... munmap resumed>) = 0 [pid 5159] set_robust_list(0x55555677f660, 24 [pid 5158] close(5 [pid 5154] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5156] ioctl(6, LOOP_SET_FD, 5 [pid 5154] <... openat resumed>) = 6 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5159 [pid 5156] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5154] ioctl(6, LOOP_SET_FD, 5 [pid 5159] <... set_robust_list resumed>) = 0 [pid 5158] <... close resumed>) = 0 [pid 5157] ioctl(6, LOOP_SET_FD, 5 [pid 5154] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5159] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5157] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5157] close(6) = 0 [pid 5157] close(5 [pid 5159] <... prctl resumed>) = 0 [pid 5154] ioctl(6, LOOP_CLR_FD [pid 5159] setpgid(0, 0 [pid 5154] <... ioctl resumed>) = 0 [pid 5159] <... setpgid resumed>) = 0 [pid 5159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5153] <... pwritev resumed>) = 103 [pid 5159] <... openat resumed>) = 3 [pid 5156] ioctl(6, LOOP_CLR_FD [pid 5153] exit_group(0 [pid 5159] write(3, "1000", 4) = 4 [pid 5154] ioctl(6, LOOP_SET_FD, 5 [pid 5156] <... ioctl resumed>) = 0 [pid 5154] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5153] <... exit_group resumed>) = ? [pid 5159] close(3 [pid 5158] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5154] close(6 [pid 5153] +++ exited with 0 +++ [pid 5154] <... close resumed>) = 0 [pid 5159] <... close resumed>) = 0 [pid 5158] <... open resumed>) = 5 [pid 5154] close(5 [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5153, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5156] ioctl(6, LOOP_SET_FD, 5 [pid 5069] <... ioctl resumed>) = 0 [pid 5156] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5069] close(3 [pid 5156] close(6 [pid 5069] <... close resumed>) = 0 [pid 5156] <... close resumed>) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5160 attached [pid 5156] close(5 [pid 5160] set_robust_list(0x55555677f660, 24 [pid 5156] <... close resumed>) = 0 [pid 5154] <... close resumed>) = 0 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5160 [pid 5160] <... set_robust_list resumed>) = 0 [pid 5160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5160] setpgid(0, 0) = 0 [pid 5160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5160] write(3, "1000", 4) = 4 [pid 5160] close(3) = 0 [pid 5160] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5160] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5160] sendfile(4, 3, [88] [pid 5158] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5154] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5159] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5154] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5157] <... close resumed>) = 0 [pid 5157] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5159] <... openat resumed>) = 3 [pid 5157] <... open resumed>) = 5 [pid 5159] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5157] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5159] <... openat resumed>) = 4 [pid 5156] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5159] sendfile(4, 3, [88] [pid 5156] <... open resumed>) = 5 [pid 5156] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5158] <... pwritev resumed>) = 103 [pid 5157] <... pwritev resumed>) = 103 [pid 5156] <... pwritev resumed>) = 103 [pid 5154] <... pwritev resumed>) = 103 [pid 5156] exit_group(0 [pid 5154] exit_group(0) = ? [pid 5156] <... exit_group resumed>) = ? [pid 5157] exit_group(0 [pid 5156] +++ exited with 0 +++ [pid 5158] exit_group(0 [pid 5157] <... exit_group resumed>) = ? [pid 5158] <... exit_group resumed>) = ? [pid 5157] +++ exited with 0 +++ [pid 5154] +++ exited with 0 +++ [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5156, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5158] +++ exited with 0 +++ [pid 5078] restart_syscall(<... resuming interrupted clone ...> [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5154, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5078] <... restart_syscall resumed>) = 0 [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5157, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5158, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5071] restart_syscall(<... resuming interrupted clone ...> [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5071] <... restart_syscall resumed>) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5076] <... openat resumed>) = 3 [pid 5078] <... openat resumed>) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5076] <... ioctl resumed>) = 0 [pid 5078] <... ioctl resumed>) = 0 [pid 5076] close(3 [pid 5078] close(3 [pid 5076] <... close resumed>) = 0 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5078] <... close resumed>) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5072] <... openat resumed>) = 3 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5161 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5162 [pid 5072] <... ioctl resumed>) = 0 [pid 5072] close(3) = 0 [pid 5071] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5162 attached ./strace-static-x86_64: Process 5161 attached [pid 5161] set_robust_list(0x55555677f660, 24 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5161] <... set_robust_list resumed>) = 0 [pid 5161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5162] set_robust_list(0x55555677f660, 24 [pid 5161] setpgid(0, 0 [pid 5162] <... set_robust_list resumed>) = 0 [pid 5161] <... setpgid resumed>) = 0 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5163 [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5071] <... ioctl resumed>) = 0 [pid 5161] <... openat resumed>) = 3 [pid 5071] close(3) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5163 attached [pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5161] write(3, "1000", 4 [pid 5163] set_robust_list(0x55555677f660, 24 [pid 5162] <... prctl resumed>) = 0 [pid 5161] <... write resumed>) = 4 [pid 5162] setpgid(0, 0 [pid 5161] close(3./strace-static-x86_64: Process 5164 attached [pid 5162] <... setpgid resumed>) = 0 [pid 5161] <... close resumed>) = 0 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5164 [pid 5164] set_robust_list(0x55555677f660, 24 [pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5161] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5164] <... set_robust_list resumed>) = 0 [pid 5162] <... openat resumed>) = 3 [pid 5161] <... openat resumed>) = 3 [pid 5162] write(3, "1000", 4 [pid 5161] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5164] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5162] <... write resumed>) = 4 [pid 5161] <... openat resumed>) = 4 [pid 5164] <... prctl resumed>) = 0 [pid 5162] close(3 [pid 5161] sendfile(4, 3, [88] [pid 5163] <... set_robust_list resumed>) = 0 [pid 5162] <... close resumed>) = 0 [pid 5163] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5162] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5163] <... prctl resumed>) = 0 [pid 5162] <... openat resumed>) = 3 [pid 5163] setpgid(0, 0 [pid 5162] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5164] setpgid(0, 0 [pid 5163] <... setpgid resumed>) = 0 [pid 5162] <... openat resumed>) = 4 [pid 5164] <... setpgid resumed>) = 0 [pid 5163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5162] sendfile(4, 3, [88] [pid 5164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5163] <... openat resumed>) = 3 [pid 5163] write(3, "1000", 4) = 4 [pid 5164] <... openat resumed>) = 3 [pid 5163] close(3 [pid 5164] write(3, "1000", 4) = 4 [pid 5164] close(3 [pid 5163] <... close resumed>) = 0 [pid 5164] <... close resumed>) = 0 [pid 5163] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5164] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5163] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5163] sendfile(4, 3, [88] [pid 5164] <... openat resumed>) = 3 [pid 5164] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 67.216828][ T5160] syz-executor166 (5160): drop_caches: 1 [ 67.235019][ T5159] syz-executor166 (5159): drop_caches: 1 [ 67.296869][ T5162] syz-executor166 (5162): drop_caches: 1 [ 67.306799][ T5164] syz-executor166 (5164): drop_caches: 1 [ 67.316143][ T5163] syz-executor166 (5163): drop_caches: 1 [ 67.320608][ T5161] syz-executor166 (5161): drop_caches: 1 [pid 5164] sendfile(4, 3, [88] [pid 5160] <... sendfile resumed> => [103], 15) = 15 [pid 5160] memfd_create("syzkaller", 0) = 5 [pid 5160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 67.380950][ T5160] syz-executor166 (5160): drop_caches: 1 [ 67.394921][ T5163] syz-executor166 (5163): drop_caches: 1 [ 67.403968][ T5159] syz-executor166 (5159): drop_caches: 1 [ 67.415769][ T5164] syz-executor166 (5164): drop_caches: 1 [ 67.424612][ T5161] syz-executor166 (5161): drop_caches: 1 [pid 5159] <... sendfile resumed> => [103], 15) = 15 [pid 5159] memfd_create("syzkaller", 0) = 5 [pid 5159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5164] <... sendfile resumed> => [103], 15) = 15 [pid 5163] <... sendfile resumed> => [103], 15) = 15 [pid 5162] <... sendfile resumed> => [103], 15) = 15 [pid 5161] <... sendfile resumed> => [103], 15) = 15 [pid 5163] memfd_create("syzkaller", 0 [pid 5164] memfd_create("syzkaller", 0) = 5 [pid 5162] memfd_create("syzkaller", 0) = 5 [pid 5162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5161] memfd_create("syzkaller", 0) = 5 [pid 5163] <... memfd_create resumed>) = 5 [pid 5164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5159] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5164] <... mmap resumed>) = 0x7f299346a000 [pid 5163] <... mmap resumed>) = 0x7f299346a000 [ 67.427486][ T5162] syz-executor166 (5162): drop_caches: 1 [pid 5160] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [pid 5159] <... write resumed>) = 2097152 [pid 5159] munmap(0x7f299346a000, 138412032 [pid 5164] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5161] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5159] <... munmap resumed>) = 0 [pid 5162] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5159] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5163] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5160] munmap(0x7f299346a000, 138412032 [pid 5159] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5159] ioctl(6, LOOP_CLR_FD) = 0 [pid 5159] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5159] close(6 [pid 5162] <... write resumed>) = 2097152 [pid 5159] <... close resumed>) = 0 [pid 5159] close(5 [pid 5161] <... write resumed>) = 2097152 [pid 5164] <... write resumed>) = 2097152 [pid 5164] munmap(0x7f299346a000, 138412032 [pid 5160] <... munmap resumed>) = 0 [pid 5163] <... write resumed>) = 2097152 [pid 5162] munmap(0x7f299346a000, 138412032 [pid 5161] munmap(0x7f299346a000, 138412032 [pid 5160] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5159] <... close resumed>) = 0 [pid 5160] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5160] ioctl(6, LOOP_CLR_FD) = 0 [pid 5159] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5164] <... munmap resumed>) = 0 [pid 5163] munmap(0x7f299346a000, 138412032 [pid 5162] <... munmap resumed>) = 0 [pid 5161] <... munmap resumed>) = 0 [pid 5159] <... open resumed>) = 5 [pid 5164] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5163] <... munmap resumed>) = 0 [pid 5160] ioctl(6, LOOP_SET_FD, 5 [pid 5159] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5160] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5160] close(6 [pid 5164] <... openat resumed>) = 6 [pid 5162] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5161] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5160] <... close resumed>) = 0 [pid 5162] <... openat resumed>) = 6 [pid 5161] <... openat resumed>) = 6 [pid 5161] ioctl(6, LOOP_SET_FD, 5 [pid 5160] close(5 [pid 5162] ioctl(6, LOOP_SET_FD, 5 [pid 5161] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5162] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5161] ioctl(6, LOOP_CLR_FD [pid 5164] ioctl(6, LOOP_SET_FD, 5 [pid 5162] ioctl(6, LOOP_CLR_FD [pid 5161] <... ioctl resumed>) = 0 [pid 5164] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5162] <... ioctl resumed>) = 0 [pid 5164] ioctl(6, LOOP_CLR_FD) = 0 [pid 5163] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5163] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5161] ioctl(6, LOOP_SET_FD, 5 [pid 5163] ioctl(6, LOOP_CLR_FD [pid 5162] ioctl(6, LOOP_SET_FD, 5 [pid 5161] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5164] ioctl(6, LOOP_SET_FD, 5 [pid 5163] <... ioctl resumed>) = 0 [pid 5162] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5161] close(6 [pid 5164] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5162] close(6 [pid 5161] <... close resumed>) = 0 [pid 5164] close(6 [pid 5162] <... close resumed>) = 0 [pid 5161] close(5 [pid 5164] <... close resumed>) = 0 [pid 5162] close(5 [pid 5161] <... close resumed>) = 0 [pid 5160] <... close resumed>) = 0 [pid 5164] close(5 [pid 5162] <... close resumed>) = 0 [pid 5164] <... close resumed>) = 0 [pid 5163] ioctl(6, LOOP_SET_FD, 5 [pid 5161] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5160] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5159] <... pwritev resumed>) = 103 [pid 5163] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5159] exit_group(0 [pid 5163] close(6 [pid 5159] <... exit_group resumed>) = ? [pid 5163] <... close resumed>) = 0 [pid 5159] +++ exited with 0 +++ [pid 5163] close(5 [pid 5162] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5159, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 5162] <... open resumed>) = 5 [pid 5162] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5161] <... open resumed>) = 5 [pid 5160] <... open resumed>) = 5 [pid 5160] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5161] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5162] <... pwritev resumed>) = 103 [pid 5160] <... pwritev resumed>) = 103 [pid 5070] close(3 [pid 5162] exit_group(0 [pid 5160] exit_group(0 [pid 5070] <... close resumed>) = 0 [pid 5162] <... exit_group resumed>) = ? [pid 5160] <... exit_group resumed>) = ? [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5162] +++ exited with 0 +++ [pid 5160] +++ exited with 0 +++ [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5165 [pid 5161] <... pwritev resumed>) = 103 [pid 5161] exit_group(0) = ? ./strace-static-x86_64: Process 5165 attached [pid 5161] +++ exited with 0 +++ [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5162, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5165] set_robust_list(0x55555677f660, 24 [pid 5078] restart_syscall(<... resuming interrupted clone ...> [pid 5165] <... set_robust_list resumed>) = 0 [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5160, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=11 /* 0.11 s */} --- [pid 5078] <... restart_syscall resumed>) = 0 [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5161, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5165] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5069] restart_syscall(<... resuming interrupted clone ...> [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5069] <... restart_syscall resumed>) = 0 [pid 5078] <... openat resumed>) = 3 [pid 5076] <... openat resumed>) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD) = 0 [pid 5076] close(3) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5078] ioctl(3, LOOP_CLR_FD) = 0 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5078] close(3 [pid 5069] <... openat resumed>) = 3 [pid 5078] <... close resumed>) = 0 [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5166 attached [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5166 [pid 5069] <... ioctl resumed>) = 0 [pid 5166] set_robust_list(0x55555677f660, 24) = 0 [pid 5166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5166] setpgid(0, 0) = 0 [pid 5166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5069] close(3 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5167 [pid 5069] <... close resumed>) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5166] write(3, "1000", 4./strace-static-x86_64: Process 5167 attached ) = 4 [pid 5166] close(3) = 0 [pid 5166] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5167] set_robust_list(0x55555677f660, 24) = 0 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5168 [pid 5167] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5166] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5167] <... prctl resumed>) = 0 [pid 5165] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 5168 attached [pid 5167] setpgid(0, 0 [pid 5168] set_robust_list(0x55555677f660, 24 [pid 5166] sendfile(4, 3, [88] [pid 5168] <... set_robust_list resumed>) = 0 [pid 5168] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5167] <... setpgid resumed>) = 0 [pid 5165] setpgid(0, 0 [pid 5168] <... prctl resumed>) = 0 [pid 5168] setpgid(0, 0 [pid 5167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5163] <... close resumed>) = 0 [pid 5168] <... setpgid resumed>) = 0 [pid 5167] <... openat resumed>) = 3 [pid 5165] <... setpgid resumed>) = 0 [pid 5163] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5168] write(3, "1000", 4 [pid 5167] write(3, "1000", 4 [pid 5165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5163] <... open resumed>) = 5 [pid 5168] <... write resumed>) = 4 [pid 5167] <... write resumed>) = 4 [pid 5168] close(3 [pid 5167] close(3 [pid 5163] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5167] <... close resumed>) = 0 [pid 5165] <... openat resumed>) = 3 [pid 5165] write(3, "1000", 4 [pid 5164] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5168] <... close resumed>) = 0 [pid 5167] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5165] <... write resumed>) = 4 [pid 5164] <... open resumed>) = 5 [pid 5168] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5167] <... openat resumed>) = 3 [pid 5165] close(3 [pid 5164] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5168] <... openat resumed>) = 3 [pid 5167] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5168] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5167] <... openat resumed>) = 4 [pid 5168] <... openat resumed>) = 4 [pid 5167] sendfile(4, 3, [88] [pid 5165] <... close resumed>) = 0 [pid 5168] sendfile(4, 3, [88] [pid 5165] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5164] <... pwritev resumed>) = 103 [pid 5165] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5164] exit_group(0 [pid 5165] <... openat resumed>) = 4 [pid 5164] <... exit_group resumed>) = ? [pid 5165] sendfile(4, 3, [88] [pid 5163] <... pwritev resumed>) = 103 [pid 5163] exit_group(0) = ? [pid 5164] +++ exited with 0 +++ [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5164, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5071] ioctl(3, LOOP_CLR_FD) = 0 [pid 5071] close(3) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555677f650) = 5169 [pid 5163] +++ exited with 0 +++ [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5163, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 5072] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5072] ioctl(3, LOOP_CLR_FD) = 0 [pid 5072] close(3) = 0 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5170 attached ./strace-static-x86_64: Process 5169 attached , child_tidptr=0x55555677f650) = 5170 [pid 5170] set_robust_list(0x55555677f660, 24 [pid 5169] set_robust_list(0x55555677f660, 24 [pid 5170] <... set_robust_list resumed>) = 0 [pid 5170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5169] <... set_robust_list resumed>) = 0 [pid 5169] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5170] setpgid(0, 0) = 0 [pid 5170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5170] write(3, "1000", 4) = 4 [pid 5170] close(3 [pid 5169] <... prctl resumed>) = 0 [pid 5169] setpgid(0, 0 [pid 5170] <... close resumed>) = 0 [pid 5169] <... setpgid resumed>) = 0 [pid 5170] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5170] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5170] sendfile(4, 3, [88] [pid 5169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5169] write(3, "1000", 4) = 4 [pid 5169] close(3) = 0 [pid 5169] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5169] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 67.768070][ T5168] syz-executor166 (5168): drop_caches: 1 [ 67.772346][ T5165] syz-executor166 (5165): drop_caches: 1 [ 67.774277][ T5167] syz-executor166 (5167): drop_caches: 1 [ 67.787047][ T5166] syz-executor166 (5166): drop_caches: 1 [ 67.826311][ T5170] syz-executor166 (5170): drop_caches: 1 [ 67.885475][ T5169] syz-executor166 (5169): drop_caches: 1 [pid 5169] sendfile(4, 3, [88] [pid 5165] <... sendfile resumed> => [103], 15) = 15 [ 67.931631][ T5165] syz-executor166 (5165): drop_caches: 1 [ 67.934817][ T5167] syz-executor166 (5167): drop_caches: 1 [ 67.965118][ T5166] syz-executor166 (5166): drop_caches: 1 [ 67.974591][ T5168] syz-executor166 (5168): drop_caches: 1 [pid 5165] memfd_create("syzkaller", 0 [pid 5167] <... sendfile resumed> => [103], 15) = 15 [pid 5167] memfd_create("syzkaller", 0 [pid 5165] <... memfd_create resumed>) = 5 [pid 5165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5169] <... sendfile resumed> => [103], 15) = 15 [pid 5165] <... mmap resumed>) = 0x7f299346a000 [pid 5167] <... memfd_create resumed>) = 5 [pid 5167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5168] <... sendfile resumed> => [103], 15) = 15 [pid 5169] memfd_create("syzkaller", 0 [pid 5166] <... sendfile resumed> => [103], 15) = 15 [ 67.978810][ T5169] syz-executor166 (5169): drop_caches: 1 [pid 5169] <... memfd_create resumed>) = 5 [pid 5168] memfd_create("syzkaller", 0 [pid 5166] memfd_create("syzkaller", 0 [pid 5165] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5169] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5168] <... memfd_create resumed>) = 5 [pid 5166] <... memfd_create resumed>) = 5 [pid 5169] <... mmap resumed>) = 0x7f299346a000 [pid 5168] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5168] <... mmap resumed>) = 0x7f299346a000 [pid 5166] <... mmap resumed>) = 0x7f299346a000 [pid 5170] <... sendfile resumed> => [103], 15) = 15 [pid 5168] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5170] memfd_create("syzkaller", 0 [pid 5169] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5167] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5166] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5165] <... write resumed>) = 2097152 [pid 5170] <... memfd_create resumed>) = 5 [pid 5170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5165] munmap(0x7f299346a000, 138412032 [pid 5167] <... write resumed>) = 2097152 [ 68.021784][ T5170] syz-executor166 (5170): drop_caches: 1 [pid 5167] munmap(0x7f299346a000, 138412032 [pid 5170] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5169] <... write resumed>) = 2097152 [pid 5168] <... write resumed>) = 2097152 [pid 5167] <... munmap resumed>) = 0 [pid 5166] <... write resumed>) = 2097152 [pid 5165] <... munmap resumed>) = 0 [pid 5169] munmap(0x7f299346a000, 138412032 [pid 5168] munmap(0x7f299346a000, 138412032 [pid 5166] munmap(0x7f299346a000, 138412032 [pid 5165] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5167] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5165] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5165] ioctl(6, LOOP_CLR_FD) = 0 [pid 5167] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5167] ioctl(6, LOOP_CLR_FD) = 0 [pid 5170] <... write resumed>) = 2097152 [pid 5170] munmap(0x7f299346a000, 138412032 [pid 5169] <... munmap resumed>) = 0 [pid 5168] <... munmap resumed>) = 0 [pid 5168] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5165] ioctl(6, LOOP_SET_FD, 5 [pid 5169] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5168] <... openat resumed>) = 6 [pid 5167] ioctl(6, LOOP_SET_FD, 5 [pid 5165] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5169] <... openat resumed>) = 6 [pid 5168] ioctl(6, LOOP_SET_FD, 5 [pid 5167] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5166] <... munmap resumed>) = 0 [pid 5165] close(6 [pid 5170] <... munmap resumed>) = 0 [pid 5169] ioctl(6, LOOP_SET_FD, 5 [pid 5168] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5167] close(6 [pid 5166] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5169] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5168] ioctl(6, LOOP_CLR_FD [pid 5166] <... openat resumed>) = 6 [pid 5170] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5169] ioctl(6, LOOP_CLR_FD [pid 5168] <... ioctl resumed>) = 0 [pid 5166] ioctl(6, LOOP_SET_FD, 5 [pid 5170] <... openat resumed>) = 6 [pid 5169] <... ioctl resumed>) = 0 [pid 5167] <... close resumed>) = 0 [pid 5166] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5167] close(5 [pid 5166] ioctl(6, LOOP_CLR_FD [pid 5165] <... close resumed>) = 0 [pid 5170] ioctl(6, LOOP_SET_FD, 5 [pid 5166] <... ioctl resumed>) = 0 [pid 5170] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5168] ioctl(6, LOOP_SET_FD, 5 [pid 5170] ioctl(6, LOOP_CLR_FD [pid 5168] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5170] <... ioctl resumed>) = 0 [pid 5169] ioctl(6, LOOP_SET_FD, 5 [pid 5168] close(6 [pid 5169] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5168] <... close resumed>) = 0 [pid 5169] close(6 [pid 5168] close(5 [pid 5166] ioctl(6, LOOP_SET_FD, 5 [pid 5169] <... close resumed>) = 0 [pid 5170] ioctl(6, LOOP_SET_FD, 5 [pid 5169] close(5 [pid 5170] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5165] close(5 [pid 5170] close(6 [pid 5166] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5170] <... close resumed>) = 0 [pid 5166] close(6 [pid 5170] close(5 [pid 5166] <... close resumed>) = 0 [pid 5166] close(5 [pid 5168] <... close resumed>) = 0 [pid 5167] <... close resumed>) = 0 [pid 5166] <... close resumed>) = 0 [pid 5168] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5170] <... close resumed>) = 0 [pid 5170] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5169] <... close resumed>) = 0 [pid 5168] <... open resumed>) = 5 [pid 5167] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5166] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5165] <... close resumed>) = 0 [pid 5170] <... open resumed>) = 5 [pid 5169] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5168] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5167] <... open resumed>) = 5 [pid 5166] <... open resumed>) = 5 [pid 5165] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5170] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5169] <... open resumed>) = 5 [pid 5167] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5165] <... open resumed>) = 5 [pid 5169] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5166] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5170] <... pwritev resumed>) = 103 [pid 5168] <... pwritev resumed>) = 103 [pid 5165] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5170] exit_group(0 [pid 5168] exit_group(0 [pid 5170] <... exit_group resumed>) = ? [pid 5170] +++ exited with 0 +++ [pid 5169] <... pwritev resumed>) = 103 [pid 5168] <... exit_group resumed>) = ? [pid 5167] <... pwritev resumed>) = 103 [pid 5166] <... pwritev resumed>) = 103 [pid 5165] <... pwritev resumed>) = 103 [pid 5169] exit_group(0 [pid 5167] exit_group(0 [pid 5166] exit_group(0 [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5170, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 5167] <... exit_group resumed>) = ? [pid 5166] <... exit_group resumed>) = ? [pid 5169] <... exit_group resumed>) = ? [pid 5168] +++ exited with 0 +++ [pid 5167] +++ exited with 0 +++ [pid 5166] +++ exited with 0 +++ [pid 5165] exit_group(0 [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5166, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5165] <... exit_group resumed>) = ? [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5167, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=13 /* 0.13 s */} --- [pid 5078] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5168, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5076] <... openat resumed>) = 3 [pid 5069] restart_syscall(<... resuming interrupted clone ...> [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5076] <... ioctl resumed>) = 0 [pid 5072] <... openat resumed>) = 3 [pid 5069] <... restart_syscall resumed>) = 0 [pid 5076] close(3 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5078] <... openat resumed>) = 3 [pid 5076] <... close resumed>) = 0 [pid 5072] <... ioctl resumed>) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5072] close(3./strace-static-x86_64: Process 5171 attached [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5072] <... close resumed>) = 0 [pid 5171] set_robust_list(0x55555677f660, 24 [pid 5078] <... ioctl resumed>) = 0 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5171 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5171] <... set_robust_list resumed>) = 0 [pid 5169] +++ exited with 0 +++ [pid 5165] +++ exited with 0 +++ [pid 5078] close(3./strace-static-x86_64: Process 5172 attached [pid 5171] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5078] <... close resumed>) = 0 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5172 [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5169, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5165, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5069] <... openat resumed>) = 3 [pid 5172] set_robust_list(0x55555677f660, 24 [pid 5171] <... prctl resumed>) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5172] <... set_robust_list resumed>) = 0 [pid 5171] setpgid(0, 0 [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5171] <... setpgid resumed>) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5172] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5071] <... openat resumed>) = 3 [pid 5069] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 5173 attached [pid 5172] <... prctl resumed>) = 0 [pid 5171] <... openat resumed>) = 3 [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5069] close(3 [pid 5173] set_robust_list(0x55555677f660, 24 [pid 5172] setpgid(0, 0 [pid 5171] write(3, "1000", 4 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5173 [pid 5071] <... ioctl resumed>) = 0 [pid 5173] <... set_robust_list resumed>) = 0 [pid 5172] <... setpgid resumed>) = 0 [pid 5171] <... write resumed>) = 4 [pid 5071] close(3 [pid 5069] <... close resumed>) = 0 [pid 5173] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5171] close(3 [pid 5172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5071] <... close resumed>) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5173] <... prctl resumed>) = 0 [pid 5172] <... openat resumed>) = 3 [pid 5171] <... close resumed>) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5174 attached [pid 5173] setpgid(0, 0 [pid 5172] write(3, "1000", 4 [pid 5171] openat(AT_FDCWD, "/proc/partitions", O_RDONLY./strace-static-x86_64: Process 5175 attached [pid 5174] set_robust_list(0x55555677f660, 24 [pid 5173] <... setpgid resumed>) = 0 [pid 5172] <... write resumed>) = 4 [pid 5171] <... openat resumed>) = 3 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5175 [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5174] <... set_robust_list resumed>) = 0 [pid 5171] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5175] set_robust_list(0x55555677f660, 24 [pid 5174] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5172] close(3 [pid 5171] <... openat resumed>) = 4 [pid 5070] <... openat resumed>) = 3 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5174 [pid 5175] <... set_robust_list resumed>) = 0 [pid 5174] <... prctl resumed>) = 0 [pid 5173] <... openat resumed>) = 3 [pid 5172] <... close resumed>) = 0 [pid 5171] sendfile(4, 3, [88] [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5175] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5174] setpgid(0, 0 [pid 5173] write(3, "1000", 4 [pid 5172] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5175] <... prctl resumed>) = 0 [pid 5174] <... setpgid resumed>) = 0 [pid 5070] <... ioctl resumed>) = 0 [pid 5175] setpgid(0, 0 [pid 5174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] close(3 [pid 5175] <... setpgid resumed>) = 0 [pid 5174] <... openat resumed>) = 3 [pid 5174] write(3, "1000", 4 [pid 5070] <... close resumed>) = 0 [pid 5175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5174] <... write resumed>) = 4 [pid 5174] close(3) = 0 [pid 5175] <... openat resumed>) = 3 [pid 5174] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5175] write(3, "1000", 4 [pid 5174] <... openat resumed>) = 3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5175] <... write resumed>) = 4 [pid 5174] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5172] <... openat resumed>) = 3 [pid 5175] close(3 [pid 5174] <... openat resumed>) = 4 [pid 5172] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5175] <... close resumed>) = 0 [pid 5174] sendfile(4, 3, [88] [pid 5172] <... openat resumed>) = 4 [pid 5175] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5173] <... write resumed>) = 4 [pid 5172] sendfile(4, 3, [88] [pid 5175] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5176 attached [pid 5176] set_robust_list(0x55555677f660, 24 [pid 5175] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5173] close(3 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5176 [pid 5176] <... set_robust_list resumed>) = 0 [pid 5173] <... close resumed>) = 0 [pid 5175] <... openat resumed>) = 4 [pid 5175] sendfile(4, 3, [88] [pid 5176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5173] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5176] setpgid(0, 0) = 0 [pid 5176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5176] write(3, "1000", 4) = 4 [pid 5176] close(3) = 0 [pid 5176] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5176] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5176] sendfile(4, 3, [88] [pid 5173] <... openat resumed>) = 3 [pid 5173] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 68.295294][ T5174] syz-executor166 (5174): drop_caches: 1 [ 68.306997][ T5171] syz-executor166 (5171): drop_caches: 1 [ 68.325676][ T5176] syz-executor166 (5176): drop_caches: 1 [ 68.345595][ T5172] syz-executor166 (5172): drop_caches: 1 [ 68.352684][ T5175] syz-executor166 (5175): drop_caches: 1 [ 68.382709][ T5173] syz-executor166 (5173): drop_caches: 1 [pid 5173] sendfile(4, 3, [88] [pid 5174] <... sendfile resumed> => [103], 15) = 15 [pid 5174] memfd_create("syzkaller", 0 [pid 5176] <... sendfile resumed> => [103], 15) = 15 [pid 5175] <... sendfile resumed> => [103], 15) = 15 [pid 5173] <... sendfile resumed> => [103], 15) = 15 [pid 5172] <... sendfile resumed> => [103], 15) = 15 [pid 5171] <... sendfile resumed> => [103], 15) = 15 [pid 5176] memfd_create("syzkaller", 0 [pid 5175] memfd_create("syzkaller", 0 [pid 5173] memfd_create("syzkaller", 0 [pid 5172] memfd_create("syzkaller", 0 [pid 5171] memfd_create("syzkaller", 0 [pid 5175] <... memfd_create resumed>) = 5 [pid 5173] <... memfd_create resumed>) = 5 [pid 5172] <... memfd_create resumed>) = 5 [pid 5173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5172] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5173] <... mmap resumed>) = 0x7f299346a000 [pid 5172] <... mmap resumed>) = 0x7f299346a000 [pid 5174] <... memfd_create resumed>) = 5 [pid 5176] <... memfd_create resumed>) = 5 [pid 5175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5175] <... mmap resumed>) = 0x7f299346a000 [pid 5174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 68.491766][ T5174] syz-executor166 (5174): drop_caches: 1 [ 68.496209][ T5173] syz-executor166 (5173): drop_caches: 1 [ 68.507783][ T5176] syz-executor166 (5176): drop_caches: 1 [ 68.512857][ T5175] syz-executor166 (5175): drop_caches: 1 [ 68.521197][ T5171] syz-executor166 (5171): drop_caches: 1 [ 68.533866][ T5172] syz-executor166 (5172): drop_caches: 1 [pid 5176] <... mmap resumed>) = 0x7f299346a000 [pid 5174] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5171] <... memfd_create resumed>) = 5 [pid 5171] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5172] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5175] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5173] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5171] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5176] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5174] <... write resumed>) = 2097152 [pid 5173] <... write resumed>) = 2097152 [pid 5174] munmap(0x7f299346a000, 138412032 [pid 5175] <... write resumed>) = 2097152 [pid 5173] munmap(0x7f299346a000, 138412032 [pid 5172] <... write resumed>) = 2097152 [pid 5171] <... write resumed>) = 2097152 [pid 5176] <... write resumed>) = 2097152 [pid 5175] munmap(0x7f299346a000, 138412032 [pid 5173] <... munmap resumed>) = 0 [pid 5172] munmap(0x7f299346a000, 138412032 [pid 5171] munmap(0x7f299346a000, 138412032 [pid 5176] munmap(0x7f299346a000, 138412032 [pid 5174] <... munmap resumed>) = 0 [pid 5174] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5171] <... munmap resumed>) = 0 [pid 5176] <... munmap resumed>) = 0 [pid 5174] ioctl(6, LOOP_SET_FD, 5 [pid 5176] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5174] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5176] <... openat resumed>) = 6 [pid 5174] ioctl(6, LOOP_CLR_FD [pid 5173] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5171] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5176] ioctl(6, LOOP_SET_FD, 5 [pid 5173] <... openat resumed>) = 6 [pid 5171] <... openat resumed>) = 6 [pid 5173] ioctl(6, LOOP_SET_FD, 5 [pid 5171] ioctl(6, LOOP_SET_FD, 5 [pid 5173] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5171] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5171] ioctl(6, LOOP_CLR_FD [pid 5173] ioctl(6, LOOP_CLR_FD [pid 5171] <... ioctl resumed>) = 0 [pid 5173] <... ioctl resumed>) = 0 [pid 5176] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5176] ioctl(6, LOOP_CLR_FD) = 0 [pid 5173] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5173] close(6) = 0 [pid 5173] close(5 [pid 5175] <... munmap resumed>) = 0 [pid 5174] <... ioctl resumed>) = 0 [pid 5172] <... munmap resumed>) = 0 [pid 5176] ioctl(6, LOOP_SET_FD, 5 [pid 5172] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5176] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5171] ioctl(6, LOOP_SET_FD, 5 [pid 5176] close(6 [pid 5171] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5176] <... close resumed>) = 0 [pid 5171] close(6 [pid 5175] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5171] <... close resumed>) = 0 [pid 5175] <... openat resumed>) = 6 [pid 5176] close(5 [pid 5171] close(5 [pid 5174] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5175] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5174] close(6 [pid 5173] <... close resumed>) = 0 [pid 5172] <... openat resumed>) = 6 [pid 5173] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5172] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5172] ioctl(6, LOOP_CLR_FD) = 0 [pid 5175] ioctl(6, LOOP_CLR_FD [pid 5174] <... close resumed>) = 0 [pid 5173] <... open resumed>) = 5 [pid 5176] <... close resumed>) = 0 [pid 5174] close(5 [pid 5173] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5172] ioctl(6, LOOP_SET_FD, 5 [pid 5175] <... ioctl resumed>) = 0 [pid 5172] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5172] close(6) = 0 [pid 5172] close(5 [pid 5176] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5176] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5175] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5175] close(6) = 0 [pid 5175] close(5 [pid 5176] <... pwritev resumed>) = 103 [pid 5173] <... pwritev resumed>) = 103 [pid 5176] exit_group(0 [pid 5173] exit_group(0 [pid 5176] <... exit_group resumed>) = ? [pid 5173] <... exit_group resumed>) = ? [pid 5176] +++ exited with 0 +++ [pid 5173] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5176, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=8 /* 0.08 s */} --- [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5173, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...> [pid 5078] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5070] <... restart_syscall resumed>) = 0 [pid 5172] <... close resumed>) = 0 [pid 5175] <... close resumed>) = 0 [pid 5174] <... close resumed>) = 0 [pid 5171] <... close resumed>) = 0 [pid 5174] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5174] <... open resumed>) = 5 [pid 5078] <... openat resumed>) = 3 [pid 5070] <... openat resumed>) = 3 [pid 5172] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5171] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5175] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5070] <... ioctl resumed>) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5172] <... open resumed>) = 5 [pid 5171] <... open resumed>) = 5 [pid 5175] <... open resumed>) = 5 [pid 5172] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5171] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452./strace-static-x86_64: Process 5177 attached [pid 5175] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5177 [pid 5177] set_robust_list(0x55555677f660, 24 [pid 5174] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5177] <... set_robust_list resumed>) = 0 [pid 5177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5177] setpgid(0, 0) = 0 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5078] <... ioctl resumed>) = 0 [pid 5078] close(3) = 0 [pid 5177] <... openat resumed>) = 3 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5177] write(3, "1000", 4) = 4 [pid 5177] close(3./strace-static-x86_64: Process 5178 attached ) = 0 [pid 5177] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5178 [pid 5178] set_robust_list(0x55555677f660, 24) = 0 [pid 5177] <... openat resumed>) = 3 [pid 5178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5177] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5178] setpgid(0, 0) = 0 [pid 5177] <... openat resumed>) = 4 [pid 5175] <... pwritev resumed>) = 103 [pid 5174] <... pwritev resumed>) = 103 [pid 5172] <... pwritev resumed>) = 103 [pid 5171] <... pwritev resumed>) = 103 [pid 5175] exit_group(0 [pid 5174] exit_group(0 [pid 5172] exit_group(0 [pid 5171] exit_group(0 [pid 5175] <... exit_group resumed>) = ? [pid 5174] <... exit_group resumed>) = ? [pid 5172] <... exit_group resumed>) = ? [pid 5171] <... exit_group resumed>) = ? [pid 5178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5177] sendfile(4, 3, [88] [pid 5175] +++ exited with 0 +++ [pid 5174] +++ exited with 0 +++ [pid 5172] +++ exited with 0 +++ [pid 5171] +++ exited with 0 +++ [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5171, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5174, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 5076] restart_syscall(<... resuming interrupted clone ...> [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5175, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5069] restart_syscall(<... resuming interrupted clone ...> [pid 5076] <... restart_syscall resumed>) = 0 [pid 5069] <... restart_syscall resumed>) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5076] <... openat resumed>) = 3 [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5172, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5069] <... openat resumed>) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5076] <... ioctl resumed>) = 0 [pid 5069] <... ioctl resumed>) = 0 [pid 5076] close(3 [pid 5069] close(3 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5076] <... close resumed>) = 0 [pid 5069] <... close resumed>) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5179 attached [pid 5178] <... openat resumed>) = 3 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5071] <... openat resumed>) = 3 [pid 5179] set_robust_list(0x55555677f660, 24 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5179 [pid 5179] <... set_robust_list resumed>) = 0 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5180 [pid 5179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5179] setpgid(0, 0./strace-static-x86_64: Process 5180 attached ) = 0 [pid 5180] set_robust_list(0x55555677f660, 24 [pid 5179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5180] <... set_robust_list resumed>) = 0 [pid 5179] <... openat resumed>) = 3 [pid 5180] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5179] write(3, "1000", 4) = 4 [pid 5179] close(3) = 0 [pid 5179] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5179] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5180] <... prctl resumed>) = 0 [pid 5179] sendfile(4, 3, [88] [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5072] <... openat resumed>) = 3 [pid 5071] <... ioctl resumed>) = 0 [pid 5178] write(3, "1000", 4 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5071] close(3 [pid 5178] <... write resumed>) = 4 [pid 5071] <... close resumed>) = 0 [pid 5178] close(3 [pid 5072] <... ioctl resumed>) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5178] <... close resumed>) = 0 [pid 5072] close(3./strace-static-x86_64: Process 5181 attached [pid 5178] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5072] <... close resumed>) = 0 [pid 5181] set_robust_list(0x55555677f660, 24 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5178] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5182 attached [pid 5181] <... set_robust_list resumed>) = 0 [pid 5180] setpgid(0, 0 [pid 5178] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5182] set_robust_list(0x55555677f660, 24 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5181 [pid 5182] <... set_robust_list resumed>) = 0 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5182 [pid 5181] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5181] <... prctl resumed>) = 0 [pid 5180] <... setpgid resumed>) = 0 [pid 5178] <... openat resumed>) = 4 [pid 5180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5181] setpgid(0, 0 [pid 5180] <... openat resumed>) = 3 [pid 5182] setpgid(0, 0 [pid 5181] <... setpgid resumed>) = 0 [pid 5180] write(3, "1000", 4 [pid 5178] sendfile(4, 3, [88] [pid 5180] <... write resumed>) = 4 [pid 5180] close(3) = 0 [pid 5180] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5180] <... openat resumed>) = 3 [pid 5180] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5181] <... openat resumed>) = 3 [pid 5180] sendfile(4, 3, [88] [pid 5182] <... setpgid resumed>) = 0 [pid 5181] write(3, "1000", 4) = 4 [pid 5182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5181] close(3) = 0 [pid 5181] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5181] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5182] <... openat resumed>) = 3 [pid 5181] sendfile(4, 3, [88] [pid 5182] write(3, "1000", 4) = 4 [pid 5182] close(3) = 0 [pid 5182] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5182] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 68.884153][ T5177] syz-executor166 (5177): drop_caches: 1 [ 68.903478][ T5179] syz-executor166 (5179): drop_caches: 1 [ 68.915687][ T5178] syz-executor166 (5178): drop_caches: 1 [ 68.917965][ T5181] syz-executor166 (5181): drop_caches: 1 [ 68.922876][ T5180] syz-executor166 (5180): drop_caches: 1 [pid 5182] sendfile(4, 3, [88] [pid 5177] <... sendfile resumed> => [103], 15) = 15 [pid 5177] memfd_create("syzkaller", 0) = 5 [pid 5177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 68.990958][ T5182] syz-executor166 (5182): drop_caches: 1 [ 69.025912][ T5177] syz-executor166 (5177): drop_caches: 1 [ 69.085845][ T5179] syz-executor166 (5179): drop_caches: 1 [ 69.099549][ T5181] syz-executor166 (5181): drop_caches: 1 [ 69.120421][ T5178] syz-executor166 (5178): drop_caches: 1 [ 69.129015][ T5180] syz-executor166 (5180): drop_caches: 1 [pid 5177] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5182] <... sendfile resumed> => [103], 15) = 15 [pid 5181] <... sendfile resumed> => [103], 15) = 15 [pid 5180] <... sendfile resumed> => [103], 15) = 15 [pid 5178] <... sendfile resumed> => [103], 15) = 15 [pid 5177] <... write resumed>) = 2097152 [pid 5179] <... sendfile resumed> => [103], 15) = 15 [pid 5182] memfd_create("syzkaller", 0) = 5 [pid 5179] memfd_create("syzkaller", 0 [pid 5182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5180] memfd_create("syzkaller", 0 [pid 5177] munmap(0x7f299346a000, 138412032 [pid 5179] <... memfd_create resumed>) = 5 [pid 5179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 69.133342][ T5182] syz-executor166 (5182): drop_caches: 1 [pid 5180] <... memfd_create resumed>) = 5 [pid 5182] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5181] memfd_create("syzkaller", 0 [pid 5179] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5178] memfd_create("syzkaller", 0 [pid 5177] <... munmap resumed>) = 0 [pid 5181] <... memfd_create resumed>) = 5 [pid 5180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5177] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5181] <... mmap resumed>) = 0x7f299346a000 [pid 5178] <... memfd_create resumed>) = 5 [pid 5178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5177] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5177] ioctl(6, LOOP_CLR_FD) = 0 [pid 5177] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5177] close(6) = 0 [pid 5177] close(5 [pid 5179] <... write resumed>) = 2097152 [pid 5180] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5177] <... close resumed>) = 0 [pid 5181] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5178] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5179] munmap(0x7f299346a000, 138412032 [pid 5182] <... write resumed>) = 2097152 [pid 5181] <... write resumed>) = 2097152 [pid 5179] <... munmap resumed>) = 0 [pid 5177] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5179] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5181] munmap(0x7f299346a000, 138412032 [pid 5179] <... openat resumed>) = 6 [pid 5177] <... open resumed>) = 5 [pid 5179] ioctl(6, LOOP_SET_FD, 5 [pid 5177] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5179] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5182] munmap(0x7f299346a000, 138412032 [pid 5181] <... munmap resumed>) = 0 [pid 5180] <... write resumed>) = 2097152 [pid 5178] <... write resumed>) = 2097152 [pid 5177] <... pwritev resumed>) = 103 [pid 5179] ioctl(6, LOOP_CLR_FD [pid 5181] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5180] munmap(0x7f299346a000, 138412032 [pid 5179] <... ioctl resumed>) = 0 [pid 5178] munmap(0x7f299346a000, 138412032 [pid 5177] exit_group(0 [pid 5180] <... munmap resumed>) = 0 [pid 5177] <... exit_group resumed>) = ? [pid 5179] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5181] <... openat resumed>) = 6 [pid 5181] ioctl(6, LOOP_SET_FD, 5 [pid 5182] <... munmap resumed>) = 0 [pid 5181] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5180] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5179] close(6 [pid 5178] <... munmap resumed>) = 0 [pid 5182] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5181] ioctl(6, LOOP_CLR_FD [pid 5180] <... openat resumed>) = 6 [pid 5179] <... close resumed>) = 0 [pid 5182] <... openat resumed>) = 6 [pid 5181] <... ioctl resumed>) = 0 [pid 5178] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5182] ioctl(6, LOOP_SET_FD, 5 [pid 5180] ioctl(6, LOOP_SET_FD, 5 [pid 5179] close(5 [pid 5178] <... openat resumed>) = 6 [pid 5182] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5180] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5177] +++ exited with 0 +++ [pid 5181] ioctl(6, LOOP_SET_FD, 5 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5177, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5181] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5070] restart_syscall(<... resuming interrupted clone ...> [pid 5181] close(6 [pid 5180] ioctl(6, LOOP_CLR_FD [pid 5070] <... restart_syscall resumed>) = 0 [pid 5180] <... ioctl resumed>) = 0 [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5180] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5183 [pid 5180] close(6 [pid 5182] ioctl(6, LOOP_CLR_FD [pid 5181] <... close resumed>) = 0 [pid 5180] <... close resumed>) = 0 [pid 5182] <... ioctl resumed>) = 0 [pid 5181] close(5 [pid 5180] close(5./strace-static-x86_64: Process 5183 attached [pid 5183] set_robust_list(0x55555677f660, 24) = 0 [pid 5183] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5183] setpgid(0, 0 [pid 5178] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5178] ioctl(6, LOOP_CLR_FD) = 0 [pid 5183] <... setpgid resumed>) = 0 [pid 5182] ioctl(6, LOOP_SET_FD, 5 [pid 5183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5182] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5182] close(6 [pid 5183] <... openat resumed>) = 3 [pid 5182] <... close resumed>) = 0 [pid 5182] close(5 [pid 5178] ioctl(6, LOOP_SET_FD, 5 [pid 5183] write(3, "1000", 4 [pid 5182] <... close resumed>) = 0 [pid 5178] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5183] <... write resumed>) = 4 [pid 5181] <... close resumed>) = 0 [pid 5179] <... close resumed>) = 0 [pid 5183] close(3 [pid 5179] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5178] close(6 [pid 5183] <... close resumed>) = 0 [pid 5178] <... close resumed>) = 0 [pid 5178] close(5 [pid 5183] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5179] <... open resumed>) = 5 [pid 5183] <... openat resumed>) = 3 [pid 5181] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5180] <... close resumed>) = 0 [pid 5179] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5181] <... open resumed>) = 5 [pid 5181] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5182] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5180] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5182] <... open resumed>) = 5 [pid 5182] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5180] <... open resumed>) = 5 [pid 5180] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5183] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5182] <... pwritev resumed>) = 103 [pid 5181] <... pwritev resumed>) = 103 [pid 5182] exit_group(0 [pid 5181] exit_group(0 [pid 5180] <... pwritev resumed>) = 103 [pid 5179] <... pwritev resumed>) = 103 [pid 5182] <... exit_group resumed>) = ? [pid 5181] <... exit_group resumed>) = ? [pid 5180] exit_group(0 [pid 5179] exit_group(0 [pid 5182] +++ exited with 0 +++ [pid 5181] +++ exited with 0 +++ [pid 5180] <... exit_group resumed>) = ? [pid 5183] sendfile(4, 3, [88] [pid 5180] +++ exited with 0 +++ [pid 5179] <... exit_group resumed>) = ? [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5181, si_uid=0, si_status=0, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5182, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5072] ioctl(3, LOOP_CLR_FD) = 0 [pid 5072] close(3 [pid 5179] +++ exited with 0 +++ [pid 5072] <... close resumed>) = 0 [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5180, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5179, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=11 /* 0.11 s */} --- [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5184 [pid 5069] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5184 attached [pid 5184] set_robust_list(0x55555677f660, 24) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5184] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5071] <... openat resumed>) = 3 [pid 5184] <... prctl resumed>) = 0 [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5184] setpgid(0, 0 [pid 5071] <... ioctl resumed>) = 0 [pid 5069] ioctl(3, LOOP_CLR_FD) = 0 [pid 5071] close(3 [pid 5069] close(3 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5069] <... close resumed>) = 0 [pid 5071] <... close resumed>) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5178] <... close resumed>) = 0 [pid 5076] <... openat resumed>) = 3 [pid 5178] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5185 ./strace-static-x86_64: Process 5185 attached [pid 5178] <... open resumed>) = 5 [pid 5184] <... setpgid resumed>) = 0 [pid 5184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5178] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452./strace-static-x86_64: Process 5186 attached [pid 5185] set_robust_list(0x55555677f660, 24 [pid 5184] <... openat resumed>) = 3 [pid 5076] <... ioctl resumed>) = 0 [pid 5185] <... set_robust_list resumed>) = 0 [pid 5184] write(3, "1000", 4 [pid 5076] close(3 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5186 [pid 5186] set_robust_list(0x55555677f660, 24 [pid 5184] <... write resumed>) = 4 [pid 5076] <... close resumed>) = 0 [pid 5184] close(3 [pid 5186] <... set_robust_list resumed>) = 0 [pid 5185] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5184] <... close resumed>) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5186] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5184] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5186] <... prctl resumed>) = 0 [pid 5184] <... openat resumed>) = 3 [pid 5184] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5186] setpgid(0, 0 [pid 5184] <... openat resumed>) = 4 [pid 5186] <... setpgid resumed>) = 0 [pid 5184] sendfile(4, 3, [88]./strace-static-x86_64: Process 5187 attached [pid 5186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5185] <... prctl resumed>) = 0 [pid 5187] set_robust_list(0x55555677f660, 24) = 0 [pid 5187] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5185] setpgid(0, 0 [pid 5187] <... prctl resumed>) = 0 [pid 5187] setpgid(0, 0 [pid 5185] <... setpgid resumed>) = 0 [pid 5187] <... setpgid resumed>) = 0 [pid 5187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5186] <... openat resumed>) = 3 [pid 5187] <... openat resumed>) = 3 [pid 5185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5187 [pid 5187] write(3, "1000", 4) = 4 [pid 5187] close(3) = 0 [pid 5187] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5187] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5187] sendfile(4, 3, [88] [pid 5186] write(3, "1000", 4 [pid 5185] <... openat resumed>) = 3 [pid 5178] <... pwritev resumed>) = 103 [pid 5186] <... write resumed>) = 4 [pid 5185] write(3, "1000", 4 [pid 5186] close(3 [pid 5185] <... write resumed>) = 4 [pid 5178] exit_group(0 [pid 5186] <... close resumed>) = 0 [pid 5185] close(3 [pid 5178] <... exit_group resumed>) = ? [pid 5186] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5185] <... close resumed>) = 0 [pid 5178] +++ exited with 0 +++ [pid 5186] <... openat resumed>) = 3 [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5178, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5186] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5185] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5186] <... openat resumed>) = 4 [pid 5185] <... openat resumed>) = 3 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5186] sendfile(4, 3, [88] [pid 5185] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5078] <... openat resumed>) = 3 [pid 5078] ioctl(3, LOOP_CLR_FD) = 0 [pid 5078] close(3) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5188 attached , child_tidptr=0x55555677f650) = 5188 [pid 5185] <... openat resumed>) = 4 [pid 5188] set_robust_list(0x55555677f660, 24) = 0 [pid 5188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5185] sendfile(4, 3, [88] [pid 5188] setpgid(0, 0) = 0 [pid 5188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5188] write(3, "1000", 4) = 4 [pid 5188] close(3) = 0 [pid 5188] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5188] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 69.483149][ T5183] syz-executor166 (5183): drop_caches: 1 [ 69.525440][ T5184] syz-executor166 (5184): drop_caches: 1 [ 69.545744][ T5185] syz-executor166 (5185): drop_caches: 1 [ 69.560582][ T5187] syz-executor166 (5187): drop_caches: 1 [ 69.577564][ T5186] syz-executor166 (5186): drop_caches: 1 [ 69.587683][ T5188] syz-executor166 (5188): drop_caches: 1 [pid 5188] sendfile(4, 3, [88] [pid 5183] <... sendfile resumed> => [103], 15) = 15 [ 69.632565][ T5183] syz-executor166 (5183): drop_caches: 1 [pid 5185] <... sendfile resumed> => [103], 15) = 15 [pid 5183] memfd_create("syzkaller", 0) = 5 [pid 5185] memfd_create("syzkaller", 0 [pid 5183] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5185] <... memfd_create resumed>) = 5 [pid 5185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5183] <... mmap resumed>) = 0x7f299346a000 [ 69.684906][ T5185] syz-executor166 (5185): drop_caches: 1 [ 69.686306][ T5184] syz-executor166 (5184): drop_caches: 1 [ 69.706859][ T5187] syz-executor166 (5187): drop_caches: 1 [pid 5185] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5187] <... sendfile resumed> => [103], 15) = 15 [pid 5186] <... sendfile resumed> => [103], 15) = 15 [pid 5185] <... write resumed>) = 2097152 [pid 5183] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5184] <... sendfile resumed> => [103], 15) = 15 [pid 5184] memfd_create("syzkaller", 0) = 5 [pid 5187] memfd_create("syzkaller", 0 [pid 5185] munmap(0x7f299346a000, 138412032 [pid 5187] <... memfd_create resumed>) = 5 [pid 5187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5186] memfd_create("syzkaller", 0 [pid 5184] <... mmap resumed>) = 0x7f299346a000 [pid 5186] <... memfd_create resumed>) = 5 [pid 5185] <... munmap resumed>) = 0 [pid 5186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5185] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5188] <... sendfile resumed> => [103], 15) = 15 [pid 5188] memfd_create("syzkaller", 0 [pid 5185] <... openat resumed>) = 6 [pid 5188] <... memfd_create resumed>) = 5 [pid 5185] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5185] ioctl(6, LOOP_CLR_FD) = 0 [pid 5187] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5186] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5185] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5185] close(6) = 0 [pid 5185] close(5 [pid 5183] <... write resumed>) = 2097152 [ 69.742249][ T5186] syz-executor166 (5186): drop_caches: 1 [ 69.763043][ T5188] syz-executor166 (5188): drop_caches: 1 [pid 5188] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5183] munmap(0x7f299346a000, 138412032) = 0 [pid 5186] <... write resumed>) = 2097152 [pid 5185] <... close resumed>) = 0 [pid 5184] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5183] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5186] munmap(0x7f299346a000, 138412032 [pid 5185] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5183] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5183] ioctl(6, LOOP_CLR_FD) = 0 [pid 5183] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5183] close(6) = 0 [pid 5183] close(5 [pid 5185] <... open resumed>) = 5 [pid 5186] <... munmap resumed>) = 0 [pid 5185] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5186] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 6 [pid 5186] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5186] ioctl(6, LOOP_CLR_FD) = 0 [pid 5186] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5186] close(6) = 0 [pid 5186] close(5 [pid 5187] <... write resumed>) = 2097152 [pid 5185] <... pwritev resumed>) = 103 [pid 5184] <... write resumed>) = 2097152 [pid 5187] munmap(0x7f299346a000, 138412032 [pid 5185] exit_group(0 [pid 5184] munmap(0x7f299346a000, 138412032 [pid 5185] <... exit_group resumed>) = ? [pid 5185] +++ exited with 0 +++ [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5185, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5188] <... write resumed>) = 2097152 [pid 5187] <... munmap resumed>) = 0 [pid 5184] <... munmap resumed>) = 0 [pid 5188] munmap(0x7f299346a000, 138412032 [pid 5187] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5184] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5186] <... close resumed>) = 0 [pid 5184] <... openat resumed>) = 6 [pid 5187] <... openat resumed>) = 6 [pid 5187] ioctl(6, LOOP_SET_FD, 5 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5187] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5183] <... close resumed>) = 0 [pid 5183] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5187] ioctl(6, LOOP_CLR_FD [pid 5183] <... open resumed>) = 5 [pid 5069] <... openat resumed>) = 3 [pid 5183] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5187] <... ioctl resumed>) = 0 [pid 5184] ioctl(6, LOOP_SET_FD, 5 [pid 5069] <... ioctl resumed>) = 0 [pid 5184] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5069] close(3 [pid 5186] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5184] ioctl(6, LOOP_CLR_FD [pid 5186] <... open resumed>) = 5 [pid 5184] <... ioctl resumed>) = 0 [pid 5069] <... close resumed>) = 0 [pid 5187] ioctl(6, LOOP_SET_FD, 5 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5187] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5186] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452./strace-static-x86_64: Process 5189 attached [pid 5188] <... munmap resumed>) = 0 [pid 5187] close(6 [pid 5186] <... pwritev resumed>) = 103 [pid 5183] <... pwritev resumed>) = 103 [pid 5189] set_robust_list(0x55555677f660, 24 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5189 [pid 5189] <... set_robust_list resumed>) = 0 [pid 5188] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5189] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5188] <... openat resumed>) = 6 [pid 5187] <... close resumed>) = 0 [pid 5186] exit_group(0 [pid 5183] exit_group(0 [pid 5187] close(5 [pid 5189] setpgid(0, 0 [pid 5184] ioctl(6, LOOP_SET_FD, 5 [pid 5188] ioctl(6, LOOP_SET_FD, 5 [pid 5189] <... setpgid resumed>) = 0 [pid 5186] <... exit_group resumed>) = ? [pid 5184] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5183] <... exit_group resumed>) = ? [pid 5184] close(6 [pid 5189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5184] <... close resumed>) = 0 [pid 5188] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5188] ioctl(6, LOOP_CLR_FD) = 0 [pid 5184] close(5 [pid 5189] <... openat resumed>) = 3 [pid 5183] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5183, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=11 /* 0.11 s */} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...> [pid 5189] write(3, "1000", 4 [pid 5070] <... restart_syscall resumed>) = 0 [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5190 attached [pid 5189] <... write resumed>) = 4 [pid 5186] +++ exited with 0 +++ [pid 5190] set_robust_list(0x55555677f660, 24 [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5186, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5190 [pid 5190] <... set_robust_list resumed>) = 0 [pid 5189] close(3 [pid 5188] ioctl(6, LOOP_SET_FD, 5 [pid 5184] <... close resumed>) = 0 [pid 5189] <... close resumed>) = 0 [pid 5188] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5188] close(6 [pid 5190] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5189] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5188] <... close resumed>) = 0 [pid 5190] <... prctl resumed>) = 0 [pid 5190] setpgid(0, 0) = 0 [pid 5188] close(5 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5071] ioctl(3, LOOP_CLR_FD) = 0 [pid 5071] close(3) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555677f650) = 5191 ./strace-static-x86_64: Process 5191 attached [pid 5190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5191] set_robust_list(0x55555677f660, 24 [pid 5190] <... openat resumed>) = 3 [pid 5189] <... openat resumed>) = 3 [pid 5191] <... set_robust_list resumed>) = 0 [pid 5190] write(3, "1000", 4 [pid 5191] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5190] <... write resumed>) = 4 [pid 5189] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5190] close(3) = 0 [pid 5190] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5189] <... openat resumed>) = 4 [pid 5191] <... prctl resumed>) = 0 [pid 5190] <... openat resumed>) = 3 [pid 5191] setpgid(0, 0 [pid 5190] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5191] <... setpgid resumed>) = 0 [pid 5190] <... openat resumed>) = 4 [pid 5191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5190] sendfile(4, 3, [88] [pid 5191] <... openat resumed>) = 3 [pid 5191] write(3, "1000", 4) = 4 [pid 5191] close(3) = 0 [pid 5191] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5189] sendfile(4, 3, [88] [pid 5188] <... close resumed>) = 0 [pid 5187] <... close resumed>) = 0 [pid 5184] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5188] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5187] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5184] <... open resumed>) = 5 [pid 5184] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5187] <... open resumed>) = 5 [pid 5191] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5188] <... open resumed>) = 5 [pid 5187] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5191] <... openat resumed>) = 4 [pid 5191] sendfile(4, 3, [88] [pid 5188] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5187] <... pwritev resumed>) = 103 [pid 5184] <... pwritev resumed>) = 103 [pid 5187] exit_group(0) = ? [pid 5184] exit_group(0 [pid 5187] +++ exited with 0 +++ [pid 5184] <... exit_group resumed>) = ? [pid 5184] +++ exited with 0 +++ [pid 5188] <... pwritev resumed>) = 103 [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5184, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5072] restart_syscall(<... resuming interrupted clone ...> [pid 5188] exit_group(0 [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5187, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5072] <... restart_syscall resumed>) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5076] <... openat resumed>) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5072] <... openat resumed>) = 3 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5076] <... ioctl resumed>) = 0 [pid 5072] <... ioctl resumed>) = 0 [pid 5188] <... exit_group resumed>) = ? [pid 5076] close(3 [pid 5072] close(3 [pid 5076] <... close resumed>) = 0 [pid 5072] <... close resumed>) = 0 [pid 5188] +++ exited with 0 +++ [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5193 attached ./strace-static-x86_64: Process 5192 attached [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5188, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5192] set_robust_list(0x55555677f660, 24 [pid 5193] set_robust_list(0x55555677f660, 24 [pid 5192] <... set_robust_list resumed>) = 0 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5193 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5078] ioctl(3, LOOP_CLR_FD) = 0 [pid 5078] close(3) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5194 attached [pid 5193] <... set_robust_list resumed>) = 0 [pid 5192] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5192 [pid 5193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5193] setpgid(0, 0 [pid 5194] set_robust_list(0x55555677f660, 24 [pid 5193] <... setpgid resumed>) = 0 [pid 5192] <... prctl resumed>) = 0 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5194 [pid 5194] <... set_robust_list resumed>) = 0 [pid 5193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5192] setpgid(0, 0 [pid 5194] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5193] <... openat resumed>) = 3 [pid 5192] <... setpgid resumed>) = 0 [pid 5193] write(3, "1000", 4 [pid 5192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5193] <... write resumed>) = 4 [pid 5192] <... openat resumed>) = 3 [pid 5193] close(3 [pid 5192] write(3, "1000", 4 [pid 5193] <... close resumed>) = 0 [pid 5192] <... write resumed>) = 4 [pid 5193] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5192] close(3 [pid 5193] <... openat resumed>) = 3 [pid 5192] <... close resumed>) = 0 [pid 5193] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5192] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5193] <... openat resumed>) = 4 [pid 5192] <... openat resumed>) = 3 [pid 5193] sendfile(4, 3, [88] [pid 5192] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5192] sendfile(4, 3, [88] [pid 5194] <... prctl resumed>) = 0 [pid 5194] setpgid(0, 0) = 0 [pid 5194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5194] write(3, "1000", 4) = 4 [pid 5194] close(3) = 0 [pid 5194] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5194] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 70.061324][ T5191] syz-executor166 (5191): drop_caches: 1 [ 70.083060][ T5189] syz-executor166 (5189): drop_caches: 1 [ 70.091028][ T5190] syz-executor166 (5190): drop_caches: 1 [pid 5194] sendfile(4, 3, [88] [pid 5191] <... sendfile resumed> => [103], 15) = 15 [pid 5191] memfd_create("syzkaller", 0) = 5 [pid 5191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 70.196312][ T5191] syz-executor166 (5191): drop_caches: 1 [ 70.223433][ T5192] syz-executor166 (5192): drop_caches: 1 [ 70.233011][ T5193] syz-executor166 (5193): drop_caches: 1 [pid 5190] <... sendfile resumed> => [103], 15) = 15 [pid 5189] <... sendfile resumed> => [103], 15) = 15 [pid 5189] memfd_create("syzkaller", 0) = 5 [pid 5189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5191] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5190] memfd_create("syzkaller", 0) = 5 [ 70.261511][ T5194] syz-executor166 (5194): drop_caches: 1 [ 70.275109][ T5190] syz-executor166 (5190): drop_caches: 1 [ 70.287901][ T5189] syz-executor166 (5189): drop_caches: 1 [pid 5190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5192] <... sendfile resumed> => [103], 15) = 15 [pid 5190] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5189] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5192] memfd_create("syzkaller", 0) = 5 [pid 5191] <... write resumed>) = 2097152 [pid 5192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [ 70.333137][ T5192] syz-executor166 (5192): drop_caches: 1 [ 70.356555][ T5193] syz-executor166 (5193): drop_caches: 1 [pid 5191] munmap(0x7f299346a000, 138412032 [pid 5192] <... mmap resumed>) = 0x7f299346a000 [pid 5191] <... munmap resumed>) = 0 [pid 5191] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 6 [pid 5191] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5191] ioctl(6, LOOP_CLR_FD) = 0 [pid 5193] <... sendfile resumed> => [103], 15) = 15 [pid 5191] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5191] close(6) = 0 [pid 5191] close(5 [pid 5193] memfd_create("syzkaller", 0) = 5 [pid 5193] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5192] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5194] <... sendfile resumed> => [103], 15) = 15 [pid 5191] <... close resumed>) = 0 [pid 5189] <... write resumed>) = 2097152 [pid 5194] memfd_create("syzkaller", 0) = 5 [pid 5194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5190] <... write resumed>) = 2097152 [pid 5189] munmap(0x7f299346a000, 138412032 [ 70.378624][ T5194] syz-executor166 (5194): drop_caches: 1 [pid 5190] munmap(0x7f299346a000, 138412032 [pid 5191] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5189] <... munmap resumed>) = 0 [pid 5190] <... munmap resumed>) = 0 [pid 5189] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5190] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5189] <... openat resumed>) = 6 [pid 5194] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5191] <... open resumed>) = 5 [pid 5190] <... openat resumed>) = 6 [pid 5189] ioctl(6, LOOP_SET_FD, 5 [pid 5191] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5190] ioctl(6, LOOP_SET_FD, 5 [pid 5189] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5190] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5190] ioctl(6, LOOP_CLR_FD [pid 5193] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5192] <... write resumed>) = 2097152 [pid 5191] <... pwritev resumed>) = 103 [pid 5190] <... ioctl resumed>) = 0 [pid 5189] ioctl(6, LOOP_CLR_FD [pid 5192] munmap(0x7f299346a000, 138412032 [pid 5191] exit_group(0 [pid 5192] <... munmap resumed>) = 0 [pid 5191] <... exit_group resumed>) = ? [pid 5191] +++ exited with 0 +++ [pid 5189] <... ioctl resumed>) = 0 [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5191, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5071] restart_syscall(<... resuming interrupted clone ...> [pid 5192] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5194] <... write resumed>) = 2097152 [pid 5193] <... write resumed>) = 2097152 [pid 5192] ioctl(6, LOOP_SET_FD, 5 [pid 5071] <... restart_syscall resumed>) = 0 [pid 5194] munmap(0x7f299346a000, 138412032 [pid 5192] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5189] ioctl(6, LOOP_SET_FD, 5 [pid 5190] ioctl(6, LOOP_SET_FD, 5 [pid 5193] munmap(0x7f299346a000, 138412032 [pid 5194] <... munmap resumed>) = 0 [pid 5192] ioctl(6, LOOP_CLR_FD [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5190] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5071] <... openat resumed>) = 3 [pid 5190] close(6 [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5190] <... close resumed>) = 0 [pid 5071] <... ioctl resumed>) = 0 [pid 5190] close(5 [pid 5071] close(3) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5195 attached [pid 5193] <... munmap resumed>) = 0 [pid 5189] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5195 [pid 5189] close(6 [pid 5193] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5189] <... close resumed>) = 0 [pid 5195] set_robust_list(0x55555677f660, 24 [pid 5193] <... openat resumed>) = 6 [pid 5192] <... ioctl resumed>) = 0 [pid 5189] close(5 [pid 5195] <... set_robust_list resumed>) = 0 [pid 5195] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5194] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5195] <... prctl resumed>) = 0 [pid 5194] <... openat resumed>) = 6 [pid 5195] setpgid(0, 0 [pid 5194] ioctl(6, LOOP_SET_FD, 5 [pid 5195] <... setpgid resumed>) = 0 [pid 5194] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5194] ioctl(6, LOOP_CLR_FD [pid 5195] <... openat resumed>) = 3 [pid 5194] <... ioctl resumed>) = 0 [pid 5192] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5192] close(6) = 0 [pid 5192] close(5 [pid 5193] ioctl(6, LOOP_SET_FD, 5 [pid 5190] <... close resumed>) = 0 [pid 5194] ioctl(6, LOOP_SET_FD, 5 [pid 5193] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5194] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5195] write(3, "1000", 4 [pid 5194] close(6 [pid 5195] <... write resumed>) = 4 [pid 5194] <... close resumed>) = 0 [pid 5195] close(3 [pid 5194] close(5 [pid 5195] <... close resumed>) = 0 [pid 5193] ioctl(6, LOOP_CLR_FD [pid 5190] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5189] <... close resumed>) = 0 [pid 5195] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5195] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5195] sendfile(4, 3, [88] [pid 5193] <... ioctl resumed>) = 0 [pid 5190] <... open resumed>) = 5 [pid 5189] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5189] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5194] <... close resumed>) = 0 [pid 5190] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5193] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5193] close(6) = 0 [pid 5193] close(5 [pid 5192] <... close resumed>) = 0 [pid 5192] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5189] <... pwritev resumed>) = 103 [pid 5192] <... open resumed>) = 5 [pid 5189] exit_group(0 [pid 5192] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5189] <... exit_group resumed>) = ? [pid 5194] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5190] <... pwritev resumed>) = 103 [pid 5194] <... open resumed>) = 5 [pid 5194] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5190] exit_group(0 [pid 5192] <... pwritev resumed>) = 103 [pid 5190] <... exit_group resumed>) = ? [pid 5192] exit_group(0) = ? [pid 5192] +++ exited with 0 +++ [pid 5189] +++ exited with 0 +++ [pid 5190] +++ exited with 0 +++ [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5192, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5189, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5194] <... pwritev resumed>) = 103 [pid 5194] exit_group(0) = ? [pid 5194] +++ exited with 0 +++ [pid 5193] <... close resumed>) = 0 [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5194, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5190, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5072] <... openat resumed>) = 3 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5069] <... openat resumed>) = 3 [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5072] <... ioctl resumed>) = 0 [pid 5069] <... ioctl resumed>) = 0 [pid 5072] close(3 [pid 5069] close(3 [pid 5072] <... close resumed>) = 0 [pid 5069] <... close resumed>) = 0 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5196 attached [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5070] <... openat resumed>) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5197 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5196 ./strace-static-x86_64: Process 5197 attached [pid 5196] set_robust_list(0x55555677f660, 24 [pid 5078] <... openat resumed>) = 3 [pid 5070] <... ioctl resumed>) = 0 [pid 5070] close(3 [pid 5196] <... set_robust_list resumed>) = 0 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5070] <... close resumed>) = 0 [pid 5197] set_robust_list(0x55555677f660, 24 [pid 5196] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5078] <... ioctl resumed>) = 0 [pid 5197] <... set_robust_list resumed>) = 0 [pid 5197] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5197] setpgid(0, 0) = 0 [pid 5197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 5198 attached [pid 5078] close(3 [pid 5198] set_robust_list(0x55555677f660, 24 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5198 [pid 5078] <... close resumed>) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5197] write(3, "1000", 4 [pid 5196] <... prctl resumed>) = 0 [pid 5198] <... set_robust_list resumed>) = 0 [pid 5197] <... write resumed>) = 4 [pid 5197] close(3 [pid 5198] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5196] setpgid(0, 0) = 0 [pid 5198] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 5199 attached [pid 5198] setpgid(0, 0 [pid 5197] <... close resumed>) = 0 [pid 5196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5199] set_robust_list(0x55555677f660, 24 [pid 5198] <... setpgid resumed>) = 0 [pid 5197] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5199] <... set_robust_list resumed>) = 0 [pid 5198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5197] <... openat resumed>) = 3 [pid 5199] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5197] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5196] <... openat resumed>) = 3 [pid 5199] <... prctl resumed>) = 0 [pid 5198] <... openat resumed>) = 3 [pid 5197] <... openat resumed>) = 4 [pid 5199] setpgid(0, 0 [pid 5198] write(3, "1000", 4 [pid 5197] sendfile(4, 3, [88] [pid 5199] <... setpgid resumed>) = 0 [pid 5198] <... write resumed>) = 4 [pid 5198] close(3 [pid 5196] write(3, "1000", 4 [pid 5193] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5199 [pid 5198] <... close resumed>) = 0 [pid 5199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5198] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5199] <... openat resumed>) = 3 [pid 5198] <... openat resumed>) = 3 [pid 5199] write(3, "1000", 4 [pid 5198] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5199] <... write resumed>) = 4 [pid 5196] <... write resumed>) = 4 [pid 5199] close(3 [pid 5198] <... openat resumed>) = 4 [pid 5196] close(3 [pid 5193] <... open resumed>) = 5 [pid 5198] sendfile(4, 3, [88] [pid 5196] <... close resumed>) = 0 [pid 5193] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5199] <... close resumed>) = 0 [pid 5196] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5199] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5199] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5196] <... openat resumed>) = 3 [pid 5199] <... openat resumed>) = 4 [pid 5199] sendfile(4, 3, [88] [pid 5196] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5196] sendfile(4, 3, [88] [pid 5193] <... pwritev resumed>) = 103 [pid 5193] exit_group(0) = ? [pid 5193] +++ exited with 0 +++ [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5193, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5076] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD) = 0 [pid 5076] close(3) = 0 [ 70.630646][ T5195] syz-executor166 (5195): drop_caches: 1 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5200 attached , child_tidptr=0x55555677f650) = 5200 [pid 5200] set_robust_list(0x55555677f660, 24) = 0 [pid 5200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5200] setpgid(0, 0) = 0 [pid 5200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 70.675425][ T5198] syz-executor166 (5198): drop_caches: 1 [ 70.676746][ T5197] syz-executor166 (5197): drop_caches: 1 [ 70.691733][ T5196] syz-executor166 (5196): drop_caches: 1 [pid 5200] write(3, "1000", 4) = 4 [pid 5200] close(3) = 0 [pid 5200] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5200] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5200] sendfile(4, 3, [88] [pid 5198] <... sendfile resumed> => [103], 15) = 15 [pid 5196] <... sendfile resumed> => [103], 15) = 15 [pid 5198] memfd_create("syzkaller", 0) = 5 [pid 5196] memfd_create("syzkaller", 0 [pid 5195] <... sendfile resumed> => [103], 15) = 15 [pid 5195] memfd_create("syzkaller", 0 [pid 5198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5196] <... memfd_create resumed>) = 5 [pid 5198] <... mmap resumed>) = 0x7f299346a000 [pid 5196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 70.769268][ T5199] syz-executor166 (5199): drop_caches: 1 [ 70.783574][ T5198] syz-executor166 (5198): drop_caches: 1 [ 70.785779][ T5195] syz-executor166 (5195): drop_caches: 1 [ 70.810320][ T5196] syz-executor166 (5196): drop_caches: 1 [pid 5195] <... memfd_create resumed>) = 5 [pid 5195] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5198] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5196] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5195] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5197] <... sendfile resumed> => [103], 15) = 15 [pid 5197] memfd_create("syzkaller", 0 [pid 5198] <... write resumed>) = 2097152 [pid 5197] <... memfd_create resumed>) = 5 [pid 5199] <... sendfile resumed> => [103], 15) = 15 [pid 5197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5199] memfd_create("syzkaller", 0 [pid 5197] <... mmap resumed>) = 0x7f299346a000 [pid 5196] <... write resumed>) = 2097152 [pid 5198] munmap(0x7f299346a000, 138412032 [pid 5196] munmap(0x7f299346a000, 138412032 [pid 5199] <... memfd_create resumed>) = 5 [pid 5198] <... munmap resumed>) = 0 [pid 5196] <... munmap resumed>) = 0 [pid 5195] <... write resumed>) = 2097152 [pid 5199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5195] munmap(0x7f299346a000, 138412032 [pid 5199] <... mmap resumed>) = 0x7f299346a000 [pid 5195] <... munmap resumed>) = 0 [ 70.888040][ T5197] syz-executor166 (5197): drop_caches: 1 [ 70.921497][ T5199] syz-executor166 (5199): drop_caches: 1 [ 70.928317][ T5200] syz-executor166 (5200): drop_caches: 1 [pid 5198] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5196] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5195] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5198] <... openat resumed>) = 6 [pid 5196] <... openat resumed>) = 6 [pid 5195] <... openat resumed>) = 6 [pid 5195] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5195] ioctl(6, LOOP_CLR_FD) = 0 [pid 5196] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5196] ioctl(6, LOOP_CLR_FD [pid 5195] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5195] close(6) = 0 [pid 5198] ioctl(6, LOOP_SET_FD, 5 [pid 5196] <... ioctl resumed>) = 0 [pid 5195] close(5 [pid 5198] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5198] ioctl(6, LOOP_CLR_FD [pid 5197] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5196] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5198] <... ioctl resumed>) = 0 [pid 5196] close(6) = 0 [pid 5196] close(5 [pid 5199] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5196] <... close resumed>) = 0 [pid 5198] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5198] close(6) = 0 [pid 5198] close(5 [pid 5195] <... close resumed>) = 0 [pid 5199] <... write resumed>) = 2097152 [pid 5197] <... write resumed>) = 2097152 [pid 5195] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5196] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5195] <... open resumed>) = 5 [pid 5195] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5197] munmap(0x7f299346a000, 138412032 [pid 5196] <... open resumed>) = 5 [pid 5196] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5199] munmap(0x7f299346a000, 138412032 [pid 5197] <... munmap resumed>) = 0 [pid 5197] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5197] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5199] <... munmap resumed>) = 0 [pid 5197] ioctl(6, LOOP_CLR_FD) = 0 [pid 5195] <... pwritev resumed>) = 103 [pid 5195] exit_group(0) = ? [pid 5195] +++ exited with 0 +++ [pid 5197] ioctl(6, LOOP_SET_FD, 5 [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5195, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5197] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5196] <... pwritev resumed>) = 103 [pid 5197] close(6) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5197] close(5 [pid 5071] <... openat resumed>) = 3 [pid 5196] exit_group(0 [pid 5071] ioctl(3, LOOP_CLR_FD) = 0 [pid 5071] close(3) = 0 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5201 attached [pid 5196] <... exit_group resumed>) = ? [pid 5201] set_robust_list(0x55555677f660, 24 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5201 [pid 5201] <... set_robust_list resumed>) = 0 [pid 5201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5201] setpgid(0, 0) = 0 [pid 5199] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5199] <... openat resumed>) = 6 [pid 5201] <... openat resumed>) = 3 [pid 5199] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5199] ioctl(6, LOOP_CLR_FD) = 0 [pid 5199] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5199] close(6 [pid 5201] write(3, "1000", 4 [pid 5199] <... close resumed>) = 0 [pid 5201] <... write resumed>) = 4 [pid 5199] close(5 [pid 5198] <... close resumed>) = 0 [pid 5197] <... close resumed>) = 0 [pid 5196] +++ exited with 0 +++ [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5196, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5198] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5201] close(3) = 0 [pid 5201] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5198] <... open resumed>) = 5 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5201] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5201] sendfile(4, 3, [88] [pid 5072] <... openat resumed>) = 3 [pid 5197] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5197] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5198] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5072] ioctl(3, LOOP_CLR_FD) = 0 [pid 5072] close(3 [pid 5200] <... sendfile resumed> => [103], 15) = 15 [pid 5072] <... close resumed>) = 0 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5202 attached [pid 5200] memfd_create("syzkaller", 0 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5202 [pid 5202] set_robust_list(0x55555677f660, 24) = 0 [pid 5202] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5200] <... memfd_create resumed>) = 5 [pid 5202] <... prctl resumed>) = 0 [pid 5200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5198] <... pwritev resumed>) = 103 [pid 5197] <... pwritev resumed>) = 103 [pid 5202] setpgid(0, 0 [pid 5200] <... mmap resumed>) = 0x7f299346a000 [pid 5199] <... close resumed>) = 0 [pid 5198] exit_group(0 [pid 5202] <... setpgid resumed>) = 0 [pid 5197] exit_group(0 [pid 5202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5198] <... exit_group resumed>) = ? [pid 5197] <... exit_group resumed>) = ? [pid 5202] <... openat resumed>) = 3 [pid 5197] +++ exited with 0 +++ [pid 5198] +++ exited with 0 +++ [ 71.102989][ T5200] syz-executor166 (5200): drop_caches: 1 [pid 5202] write(3, "1000", 4 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5198, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5197, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...> [pid 5202] <... write resumed>) = 4 [pid 5199] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5070] <... restart_syscall resumed>) = 0 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5202] close(3 [pid 5069] <... openat resumed>) = 3 [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5202] <... close resumed>) = 0 [pid 5069] <... ioctl resumed>) = 0 [pid 5202] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5070] <... openat resumed>) = 3 [pid 5069] close(3) = 0 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5199] <... open resumed>) = 5 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5199] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5070] <... ioctl resumed>) = 0 [pid 5070] close(3 [pid 5202] <... openat resumed>) = 3 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5203 [pid 5070] <... close resumed>) = 0 ./strace-static-x86_64: Process 5203 attached [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5203] set_robust_list(0x55555677f660, 24) = 0 [pid 5202] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5204 [pid 5202] <... openat resumed>) = 4 ./strace-static-x86_64: Process 5204 attached [pid 5204] set_robust_list(0x55555677f660, 24 [pid 5199] <... pwritev resumed>) = 103 [pid 5204] <... set_robust_list resumed>) = 0 [pid 5199] exit_group(0) = ? [pid 5202] sendfile(4, 3, [88] [pid 5199] +++ exited with 0 +++ [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5199, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5200] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5078] <... openat resumed>) = 3 [pid 5203] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5078] ioctl(3, LOOP_CLR_FD) = 0 [pid 5203] <... prctl resumed>) = 0 [pid 5204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5204] setpgid(0, 0) = 0 [pid 5203] setpgid(0, 0 [pid 5078] close(3 [pid 5204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5203] <... setpgid resumed>) = 0 [pid 5078] <... close resumed>) = 0 [pid 5204] <... openat resumed>) = 3 [pid 5203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5204] write(3, "1000", 4) = 4 [pid 5204] close(3) = 0 [pid 5204] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5204] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5204] sendfile(4, 3, [88]./strace-static-x86_64: Process 5205 attached [pid 5205] set_robust_list(0x55555677f660, 24 [pid 5203] <... openat resumed>) = 3 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5205 [pid 5205] <... set_robust_list resumed>) = 0 [pid 5203] write(3, "1000", 4) = 4 [pid 5205] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5203] close(3) = 0 [pid 5203] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5205] <... prctl resumed>) = 0 [pid 5203] <... openat resumed>) = 3 [pid 5203] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5205] setpgid(0, 0 [pid 5203] <... openat resumed>) = 4 [pid 5203] sendfile(4, 3, [88] [pid 5205] <... setpgid resumed>) = 0 [pid 5205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5205] write(3, "1000", 4) = 4 [pid 5205] close(3) = 0 [pid 5200] <... write resumed>) = 2097152 [pid 5205] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5200] munmap(0x7f299346a000, 138412032 [pid 5205] <... openat resumed>) = 3 [pid 5200] <... munmap resumed>) = 0 [pid 5205] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5200] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5205] <... openat resumed>) = 4 [pid 5200] <... openat resumed>) = 6 [pid 5200] ioctl(6, LOOP_SET_FD, 5 [pid 5205] sendfile(4, 3, [88] [pid 5200] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5200] ioctl(6, LOOP_CLR_FD) = 0 [pid 5200] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [ 71.263400][ T5201] syz-executor166 (5201): drop_caches: 1 [ 71.283269][ T5202] syz-executor166 (5202): drop_caches: 1 [pid 5200] close(6) = 0 [pid 5200] close(5) = 0 [pid 5200] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5200] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5200] exit_group(0) = ? [ 71.362920][ T5203] syz-executor166 (5203): drop_caches: 1 [ 71.381544][ T5204] syz-executor166 (5204): drop_caches: 1 [ 71.397027][ T5205] syz-executor166 (5205): drop_caches: 1 [pid 5200] +++ exited with 0 +++ [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5200, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5202] <... sendfile resumed> => [103], 15) = 15 [pid 5202] memfd_create("syzkaller", 0) = 5 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5076] <... openat resumed>) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD) = 0 [pid 5076] close(3 [pid 5201] <... sendfile resumed> => [103], 15) = 15 [pid 5201] memfd_create("syzkaller", 0) = 5 [pid 5076] <... close resumed>) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5206 [ 71.418764][ T5202] syz-executor166 (5202): drop_caches: 1 [ 71.430527][ T5201] syz-executor166 (5201): drop_caches: 1 [pid 5202] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152./strace-static-x86_64: Process 5206 attached [pid 5206] set_robust_list(0x55555677f660, 24) = 0 [pid 5206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5206] setpgid(0, 0) = 0 [pid 5206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5206] write(3, "1000", 4) = 4 [pid 5206] close(3) = 0 [pid 5206] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5206] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5206] sendfile(4, 3, [88] [pid 5203] <... sendfile resumed> => [103], 15) = 15 [pid 5202] <... write resumed>) = 2097152 [pid 5203] memfd_create("syzkaller", 0 [pid 5202] munmap(0x7f299346a000, 138412032 [pid 5203] <... memfd_create resumed>) = 5 [pid 5202] <... munmap resumed>) = 0 [pid 5203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5202] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5203] <... mmap resumed>) = 0x7f299346a000 [pid 5203] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5202] <... openat resumed>) = 6 [pid 5201] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5202] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5202] ioctl(6, LOOP_CLR_FD) = 0 [ 71.485870][ T5203] syz-executor166 (5203): drop_caches: 1 [pid 5202] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5205] <... sendfile resumed> => [103], 15) = 15 [pid 5202] close(6) = 0 [pid 5202] close(5 [pid 5205] memfd_create("syzkaller", 0 [pid 5204] <... sendfile resumed> => [103], 15) = 15 [pid 5205] <... memfd_create resumed>) = 5 [pid 5204] memfd_create("syzkaller", 0 [pid 5205] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5204] <... memfd_create resumed>) = 5 [pid 5205] <... mmap resumed>) = 0x7f299346a000 [pid 5204] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5202] <... close resumed>) = 0 [pid 5201] <... write resumed>) = 2097152 [pid 5203] <... write resumed>) = 2097152 [pid 5201] munmap(0x7f299346a000, 138412032 [pid 5205] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5201] <... munmap resumed>) = 0 [pid 5203] munmap(0x7f299346a000, 138412032 [pid 5202] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [ 71.535134][ T5205] syz-executor166 (5205): drop_caches: 1 [ 71.549694][ T5204] syz-executor166 (5204): drop_caches: 1 [ 71.556090][ T5206] syz-executor166 (5206): drop_caches: 1 [pid 5201] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5203] <... munmap resumed>) = 0 [pid 5202] <... open resumed>) = 5 [pid 5201] <... openat resumed>) = 6 [pid 5205] <... write resumed>) = 2097152 [pid 5201] ioctl(6, LOOP_SET_FD, 5 [pid 5205] munmap(0x7f299346a000, 138412032 [pid 5204] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5202] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5201] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5201] ioctl(6, LOOP_CLR_FD [pid 5203] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5201] <... ioctl resumed>) = 0 [pid 5203] <... openat resumed>) = 6 [pid 5205] <... munmap resumed>) = 0 [pid 5203] ioctl(6, LOOP_SET_FD, 5 [pid 5202] <... pwritev resumed>) = 103 [pid 5205] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5203] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5202] exit_group(0 [pid 5201] ioctl(6, LOOP_SET_FD, 5 [pid 5205] <... openat resumed>) = 6 [pid 5203] ioctl(6, LOOP_CLR_FD [pid 5202] <... exit_group resumed>) = ? [pid 5201] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5205] ioctl(6, LOOP_SET_FD, 5 [pid 5203] <... ioctl resumed>) = 0 [pid 5202] +++ exited with 0 +++ [pid 5201] close(6) = 0 [pid 5205] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5201] close(5 [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5202, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5205] ioctl(6, LOOP_CLR_FD) = 0 [pid 5203] ioctl(6, LOOP_SET_FD, 5 [pid 5072] restart_syscall(<... resuming interrupted clone ...> [pid 5203] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5203] close(6 [pid 5072] <... restart_syscall resumed>) = 0 [pid 5203] <... close resumed>) = 0 [pid 5205] ioctl(6, LOOP_SET_FD, 5 [pid 5203] close(5 [pid 5205] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5204] <... write resumed>) = 2097152 [pid 5201] <... close resumed>) = 0 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5205] close(6 [pid 5204] munmap(0x7f299346a000, 138412032 [pid 5201] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5072] <... openat resumed>) = 3 [pid 5205] <... close resumed>) = 0 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5205] close(5 [pid 5072] <... ioctl resumed>) = 0 [pid 5072] close(3) = 0 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555677f650) = 5207 [pid 5201] <... open resumed>) = 5 ./strace-static-x86_64: Process 5207 attached [pid 5207] set_robust_list(0x55555677f660, 24) = 0 [pid 5207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5207] setpgid(0, 0) = 0 [pid 5207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5204] <... munmap resumed>) = 0 [pid 5201] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5204] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5204] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5204] ioctl(6, LOOP_CLR_FD) = 0 [pid 5201] <... pwritev resumed>) = 103 [pid 5201] exit_group(0) = ? [pid 5207] <... openat resumed>) = 3 [pid 5207] write(3, "1000", 4 [pid 5205] <... close resumed>) = 0 [pid 5204] ioctl(6, LOOP_SET_FD, 5 [pid 5201] +++ exited with 0 +++ [pid 5207] <... write resumed>) = 4 [pid 5204] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5207] close(3 [pid 5204] close(6 [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5201, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5207] <... close resumed>) = 0 [pid 5204] <... close resumed>) = 0 [pid 5207] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5204] close(5 [pid 5207] <... openat resumed>) = 3 [pid 5207] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5207] sendfile(4, 3, [88] [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5071] ioctl(3, LOOP_CLR_FD) = 0 [pid 5071] close(3 [pid 5204] <... close resumed>) = 0 [pid 5071] <... close resumed>) = 0 [pid 5204] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5208 attached [pid 5205] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5203] <... close resumed>) = 0 [pid 5203] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5208] set_robust_list(0x55555677f660, 24 [pid 5206] <... sendfile resumed> => [103], 15) = 15 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5208 [pid 5208] <... set_robust_list resumed>) = 0 [pid 5208] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5205] <... open resumed>) = 5 [pid 5204] <... open resumed>) = 5 [pid 5203] <... open resumed>) = 5 [pid 5208] <... prctl resumed>) = 0 [pid 5205] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5204] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5203] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5208] setpgid(0, 0) = 0 [pid 5208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5208] write(3, "1000", 4) = 4 [pid 5208] close(3) = 0 [pid 5208] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5206] memfd_create("syzkaller", 0 [pid 5205] <... pwritev resumed>) = 103 [pid 5204] <... pwritev resumed>) = 103 [pid 5203] <... pwritev resumed>) = 103 [pid 5205] exit_group(0 [pid 5204] exit_group(0 [pid 5203] exit_group(0 [pid 5208] <... openat resumed>) = 3 [pid 5205] <... exit_group resumed>) = ? [pid 5204] <... exit_group resumed>) = ? [pid 5203] <... exit_group resumed>) = ? [pid 5206] <... memfd_create resumed>) = 5 [pid 5205] +++ exited with 0 +++ [pid 5204] +++ exited with 0 +++ [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5205, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5078] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5203] +++ exited with 0 +++ [pid 5078] <... ioctl resumed>) = 0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5204, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5078] close(3 [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5203, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5206] <... mmap resumed>) = 0x7f299346a000 [pid 5078] <... close resumed>) = 0 [pid 5208] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5069] restart_syscall(<... resuming interrupted clone ...> [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5209 attached [pid 5069] <... restart_syscall resumed>) = 0 [pid 5209] set_robust_list(0x55555677f660, 24) = 0 [pid 5208] <... openat resumed>) = 4 [pid 5209] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5209] <... prctl resumed>) = 0 [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5209 [pid 5070] <... openat resumed>) = 3 [pid 5069] <... openat resumed>) = 3 [pid 5209] setpgid(0, 0 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5209] <... setpgid resumed>) = 0 [pid 5070] <... ioctl resumed>) = 0 [pid 5069] <... ioctl resumed>) = 0 [pid 5209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] close(3 [pid 5069] close(3 [pid 5209] <... openat resumed>) = 3 [pid 5209] write(3, "1000", 4 [pid 5069] <... close resumed>) = 0 [pid 5209] <... write resumed>) = 4 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5209] close(3 [pid 5208] sendfile(4, 3, [88] [pid 5070] <... close resumed>) = 0 ./strace-static-x86_64: Process 5210 attached [pid 5209] <... close resumed>) = 0 [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5210 [pid 5210] set_robust_list(0x55555677f660, 24 [pid 5209] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5209] <... openat resumed>) = 3 [pid 5209] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5209] sendfile(4, 3, [88]./strace-static-x86_64: Process 5211 attached [pid 5210] <... set_robust_list resumed>) = 0 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5211 [pid 5210] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5211] set_robust_list(0x55555677f660, 24 [pid 5210] <... prctl resumed>) = 0 [pid 5210] setpgid(0, 0) = 0 [pid 5210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5211] <... set_robust_list resumed>) = 0 [pid 5210] write(3, "1000", 4) = 4 [ 71.701636][ T5206] syz-executor166 (5206): drop_caches: 1 [pid 5211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5210] close(3) = 0 [pid 5211] setpgid(0, 0 [pid 5210] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5211] <... setpgid resumed>) = 0 [pid 5210] <... openat resumed>) = 3 [pid 5206] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5210] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5211] <... openat resumed>) = 3 [pid 5210] sendfile(4, 3, [88] [pid 5211] write(3, "1000", 4) = 4 [ 71.760505][ T5207] syz-executor166 (5207): drop_caches: 1 [pid 5211] close(3) = 0 [pid 5211] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5211] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5211] sendfile(4, 3, [88] [pid 5206] <... write resumed>) = 2097152 [pid 5206] munmap(0x7f299346a000, 138412032) = 0 [pid 5206] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 6 [pid 5206] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5206] ioctl(6, LOOP_CLR_FD) = 0 [pid 5206] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5206] close(6 [pid 5207] <... sendfile resumed> => [103], 15) = 15 [pid 5206] <... close resumed>) = 0 [ 71.881585][ T5208] syz-executor166 (5208): drop_caches: 1 [ 71.895873][ T5207] syz-executor166 (5207): drop_caches: 1 [ 71.895883][ T5209] syz-executor166 (5209): drop_caches: 1 [ 71.910920][ T5210] syz-executor166 (5210): drop_caches: 1 [pid 5207] memfd_create("syzkaller", 0 [pid 5206] close(5 [pid 5207] <... memfd_create resumed>) = 5 [pid 5206] <... close resumed>) = 0 [pid 5207] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5206] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5207] <... mmap resumed>) = 0x7f299346a000 [pid 5206] <... open resumed>) = 5 [ 71.944026][ T5211] syz-executor166 (5211): drop_caches: 1 [pid 5206] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5207] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5206] <... pwritev resumed>) = 103 [pid 5206] exit_group(0) = ? [pid 5206] +++ exited with 0 +++ [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5206, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- [pid 5076] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD) = 0 [pid 5076] close(3) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555677f650) = 5212 ./strace-static-x86_64: Process 5212 attached [pid 5212] set_robust_list(0x55555677f660, 24) = 0 [pid 5212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 72.056522][ T5208] syz-executor166 (5208): drop_caches: 1 [ 72.074464][ T5210] syz-executor166 (5210): drop_caches: 1 [pid 5212] setpgid(0, 0 [pid 5208] <... sendfile resumed> => [103], 15) = 15 [pid 5212] <... setpgid resumed>) = 0 [pid 5210] <... sendfile resumed> => [103], 15) = 15 [pid 5209] <... sendfile resumed> => [103], 15) = 15 [pid 5208] memfd_create("syzkaller", 0 [pid 5207] <... write resumed>) = 2097152 [pid 5212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5212] write(3, "1000", 4) = 4 [pid 5211] <... sendfile resumed> => [103], 15) = 15 [pid 5210] memfd_create("syzkaller", 0 [pid 5208] <... memfd_create resumed>) = 5 [pid 5207] munmap(0x7f299346a000, 138412032 [pid 5212] close(3 [pid 5210] <... memfd_create resumed>) = 5 [pid 5208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5212] <... close resumed>) = 0 [pid 5212] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5212] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5212] sendfile(4, 3, [88] [pid 5211] memfd_create("syzkaller", 0 [pid 5210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5209] memfd_create("syzkaller", 0 [pid 5208] <... mmap resumed>) = 0x7f299346a000 [pid 5207] <... munmap resumed>) = 0 [pid 5210] <... mmap resumed>) = 0x7f299346a000 [pid 5211] <... memfd_create resumed>) = 5 [pid 5209] <... memfd_create resumed>) = 5 [pid 5208] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5207] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5209] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5207] <... openat resumed>) = 6 [pid 5211] <... mmap resumed>) = 0x7f299346a000 [pid 5209] <... mmap resumed>) = 0x7f299346a000 [ 72.101516][ T5209] syz-executor166 (5209): drop_caches: 1 [ 72.104581][ T5211] syz-executor166 (5211): drop_caches: 1 [pid 5207] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5207] ioctl(6, LOOP_CLR_FD) = 0 [pid 5207] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5207] close(6) = 0 [pid 5207] close(5 [pid 5210] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5209] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5211] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5208] <... write resumed>) = 2097152 [pid 5207] <... close resumed>) = 0 [pid 5207] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5207] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5208] munmap(0x7f299346a000, 138412032 [pid 5210] <... write resumed>) = 2097152 [pid 5208] <... munmap resumed>) = 0 [pid 5210] munmap(0x7f299346a000, 138412032 [pid 5208] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5207] <... pwritev resumed>) = 103 [pid 5208] <... openat resumed>) = 6 [pid 5207] exit_group(0 [pid 5208] ioctl(6, LOOP_SET_FD, 5 [pid 5207] <... exit_group resumed>) = ? [pid 5210] <... munmap resumed>) = 0 [pid 5208] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5207] +++ exited with 0 +++ [pid 5210] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5208] ioctl(6, LOOP_CLR_FD [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5207, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 5210] <... openat resumed>) = 6 [pid 5208] <... ioctl resumed>) = 0 [pid 5210] ioctl(6, LOOP_SET_FD, 5 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5210] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5208] ioctl(6, LOOP_SET_FD, 5 [pid 5210] ioctl(6, LOOP_CLR_FD [pid 5208] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5072] <... openat resumed>) = 3 [ 72.184263][ T5212] syz-executor166 (5212): drop_caches: 1 [pid 5211] <... write resumed>) = 2097152 [pid 5210] <... ioctl resumed>) = 0 [pid 5208] close(6) = 0 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5208] close(5 [pid 5072] <... ioctl resumed>) = 0 [pid 5072] close(3 [pid 5210] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5072] <... close resumed>) = 0 [pid 5210] close(6 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5210] <... close resumed>) = 0 ./strace-static-x86_64: Process 5213 attached [pid 5210] close(5 [pid 5209] <... write resumed>) = 2097152 [pid 5213] set_robust_list(0x55555677f660, 24 [pid 5211] munmap(0x7f299346a000, 138412032 [pid 5208] <... close resumed>) = 0 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5213 [pid 5213] <... set_robust_list resumed>) = 0 [pid 5209] munmap(0x7f299346a000, 138412032 [pid 5213] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5209] <... munmap resumed>) = 0 [pid 5213] <... prctl resumed>) = 0 [pid 5213] setpgid(0, 0) = 0 [pid 5213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5211] <... munmap resumed>) = 0 [pid 5208] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5209] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5209] ioctl(6, LOOP_SET_FD, 5 [pid 5208] <... open resumed>) = 5 [pid 5213] <... openat resumed>) = 3 [pid 5209] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5208] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5213] write(3, "1000", 4 [pid 5210] <... close resumed>) = 0 [pid 5209] ioctl(6, LOOP_CLR_FD [pid 5213] <... write resumed>) = 4 [pid 5210] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5209] <... ioctl resumed>) = 0 [pid 5213] close(3 [pid 5211] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5213] <... close resumed>) = 0 [pid 5210] <... open resumed>) = 5 [pid 5213] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5211] <... openat resumed>) = 6 [pid 5210] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5208] <... pwritev resumed>) = 103 [pid 5211] ioctl(6, LOOP_SET_FD, 5 [pid 5209] ioctl(6, LOOP_SET_FD, 5 [pid 5208] exit_group(0 [pid 5213] <... openat resumed>) = 3 [pid 5209] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5208] <... exit_group resumed>) = ? [pid 5213] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5209] close(6 [pid 5208] +++ exited with 0 +++ [pid 5213] <... openat resumed>) = 4 [pid 5209] <... close resumed>) = 0 [pid 5213] sendfile(4, 3, [88] [pid 5209] close(5 [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5208, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5071] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5211] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5210] <... pwritev resumed>) = 103 [pid 5211] ioctl(6, LOOP_CLR_FD [pid 5210] exit_group(0 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5211] <... ioctl resumed>) = 0 [pid 5210] <... exit_group resumed>) = ? [pid 5071] <... openat resumed>) = 3 [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5210] +++ exited with 0 +++ [pid 5211] ioctl(6, LOOP_SET_FD, 5 [pid 5071] <... ioctl resumed>) = 0 [pid 5211] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5071] close(3 [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5210, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- [pid 5211] close(6 [pid 5071] <... close resumed>) = 0 [pid 5069] restart_syscall(<... resuming interrupted clone ...> [pid 5211] <... close resumed>) = 0 [pid 5211] close(5 [pid 5069] <... restart_syscall resumed>) = 0 [pid 5211] <... close resumed>) = 0 [pid 5211] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5211] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5069] <... openat resumed>) = 3 [pid 5069] ioctl(3, LOOP_CLR_FD [pid 5211] <... pwritev resumed>) = 103 [pid 5211] exit_group(0) = ? ./strace-static-x86_64: Process 5214 attached [pid 5211] +++ exited with 0 +++ [pid 5069] <... ioctl resumed>) = 0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5211, si_uid=0, si_status=0, si_utime=0, si_stime=12 /* 0.12 s */} --- [pid 5069] close(3 [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5214 [pid 5214] set_robust_list(0x55555677f660, 24 [pid 5069] <... close resumed>) = 0 [pid 5214] <... set_robust_list resumed>) = 0 [pid 5212] <... sendfile resumed> => [103], 15) = 15 [pid 5209] <... close resumed>) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 5215 attached ) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5069] <... clone resumed>, child_tidptr=0x55555677f650) = 5215 [pid 5215] set_robust_list(0x55555677f660, 24) = 0 [pid 5214] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] <... ioctl resumed>) = 0 [pid 5214] <... prctl resumed>) = 0 [pid 5215] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5214] setpgid(0, 0 [pid 5070] close(3 [pid 5215] setpgid(0, 0 [pid 5214] <... setpgid resumed>) = 0 [pid 5070] <... close resumed>) = 0 [pid 5215] <... setpgid resumed>) = 0 [pid 5215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5209] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5215] <... openat resumed>) = 3 [pid 5214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5209] <... open resumed>) = 5 [pid 5209] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5214] <... openat resumed>) = 3 [pid 5215] write(3, "1000", 4) = 4 [pid 5214] write(3, "1000", 4 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5209] <... pwritev resumed>) = 103 [pid 5209] exit_group(0) = ? ./strace-static-x86_64: Process 5216 attached [pid 5215] close(3 [pid 5214] <... write resumed>) = 4 [pid 5209] +++ exited with 0 +++ [pid 5216] set_robust_list(0x55555677f660, 24 [pid 5215] <... close resumed>) = 0 [pid 5214] close(3 [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5209, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=12 /* 0.12 s */} --- [pid 5214] <... close resumed>) = 0 [pid 5214] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5216] <... set_robust_list resumed>) = 0 [pid 5215] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5214] <... openat resumed>) = 3 [pid 5078] <... openat resumed>) = 3 [pid 5214] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5216] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5212] memfd_create("syzkaller", 0 [pid 5078] <... ioctl resumed>) = 0 [pid 5216] <... prctl resumed>) = 0 [pid 5215] <... openat resumed>) = 3 [pid 5078] close(3 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5216 [pid 5216] setpgid(0, 0 [pid 5212] <... memfd_create resumed>) = 5 [pid 5078] <... close resumed>) = 0 [pid 5216] <... setpgid resumed>) = 0 [pid 5215] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5214] <... openat resumed>) = 4 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5215] <... openat resumed>) = 4 [pid 5214] sendfile(4, 3, [88] [pid 5215] sendfile(4, 3, [88] [pid 5216] <... openat resumed>) = 3 [ 72.329878][ T5212] syz-executor166 (5212): drop_caches: 1 [pid 5216] write(3, "1000", 4./strace-static-x86_64: Process 5217 attached ) = 4 [pid 5216] close(3) = 0 [pid 5217] set_robust_list(0x55555677f660, 24 [pid 5216] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5217] <... set_robust_list resumed>) = 0 [pid 5217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5216] <... openat resumed>) = 3 [pid 5217] setpgid(0, 0) = 0 [pid 5216] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5217 [pid 5217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5216] <... openat resumed>) = 4 [pid 5217] <... openat resumed>) = 3 [pid 5216] sendfile(4, 3, [88] [pid 5217] write(3, "1000", 4) = 4 [pid 5217] close(3) = 0 [pid 5217] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5217] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5217] sendfile(4, 3, [88] [pid 5212] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [pid 5212] munmap(0x7f299346a000, 138412032) = 0 [pid 5212] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 6 [pid 5212] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5212] ioctl(6, LOOP_CLR_FD) = 0 [pid 5212] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5212] close(6) = 0 [pid 5212] close(5) = 0 [pid 5212] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5212] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5212] exit_group(0) = ? [pid 5212] +++ exited with 0 +++ [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5212, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5076] restart_syscall(<... resuming interrupted clone ...>) = 0 [ 72.477992][ T5213] syz-executor166 (5213): drop_caches: 1 [ 72.488183][ T5217] syz-executor166 (5217): drop_caches: 1 [ 72.497166][ T5214] syz-executor166 (5214): drop_caches: 1 [ 72.511005][ T5215] syz-executor166 (5215): drop_caches: 1 [ 72.514119][ T5216] syz-executor166 (5216): drop_caches: 1 [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD) = 0 [pid 5076] close(3) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5218 attached [pid 5218] set_robust_list(0x55555677f660, 24 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5218 [pid 5218] <... set_robust_list resumed>) = 0 [pid 5214] <... sendfile resumed> => [103], 15) = 15 [pid 5218] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5213] <... sendfile resumed> => [103], 15) = 15 [pid 5218] <... prctl resumed>) = 0 [pid 5218] setpgid(0, 0) = 0 [pid 5217] <... sendfile resumed> => [103], 15) = 15 [pid 5216] <... sendfile resumed> => [103], 15) = 15 [pid 5214] memfd_create("syzkaller", 0 [pid 5213] memfd_create("syzkaller", 0 [pid 5218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5217] memfd_create("syzkaller", 0 [pid 5216] memfd_create("syzkaller", 0 [pid 5214] <... memfd_create resumed>) = 5 [pid 5213] <... memfd_create resumed>) = 5 [pid 5218] <... openat resumed>) = 3 [pid 5218] write(3, "1000", 4) = 4 [pid 5213] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5218] close(3) = 0 [pid 5214] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5218] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5214] <... mmap resumed>) = 0x7f299346a000 [pid 5213] <... mmap resumed>) = 0x7f299346a000 [pid 5218] <... openat resumed>) = 3 [pid 5217] <... memfd_create resumed>) = 5 [pid 5216] <... memfd_create resumed>) = 5 [pid 5215] <... sendfile resumed> => [103], 15) = 15 [pid 5218] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5217] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5218] <... openat resumed>) = 4 [pid 5218] sendfile(4, 3, [88] [pid 5217] <... mmap resumed>) = 0x7f299346a000 [pid 5216] <... mmap resumed>) = 0x7f299346a000 [pid 5215] memfd_create("syzkaller", 0) = 5 [pid 5215] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [ 72.607705][ T5217] syz-executor166 (5217): drop_caches: 1 [ 72.613246][ T5214] syz-executor166 (5214): drop_caches: 1 [ 72.622510][ T5213] syz-executor166 (5213): drop_caches: 1 [ 72.631175][ T5216] syz-executor166 (5216): drop_caches: 1 [ 72.640579][ T5215] syz-executor166 (5215): drop_caches: 1 [pid 5213] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5214] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5216] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5217] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5215] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5214] <... write resumed>) = 2097152 [pid 5213] <... write resumed>) = 2097152 [pid 5213] munmap(0x7f299346a000, 138412032 [pid 5214] munmap(0x7f299346a000, 138412032 [pid 5213] <... munmap resumed>) = 0 [pid 5213] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5213] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5213] ioctl(6, LOOP_CLR_FD) = 0 [pid 5217] <... write resumed>) = 2097152 [pid 5216] <... write resumed>) = 2097152 [pid 5215] <... write resumed>) = 2097152 [pid 5214] <... munmap resumed>) = 0 [pid 5214] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5213] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5213] close(6) = 0 [pid 5213] close(5 [pid 5217] munmap(0x7f299346a000, 138412032) = 0 [pid 5214] <... openat resumed>) = 6 [pid 5214] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5214] ioctl(6, LOOP_CLR_FD [pid 5216] munmap(0x7f299346a000, 138412032) = 0 [pid 5215] munmap(0x7f299346a000, 138412032 [pid 5214] <... ioctl resumed>) = 0 [pid 5213] <... close resumed>) = 0 [pid 5214] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5217] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5217] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5217] ioctl(6, LOOP_CLR_FD) = 0 [pid 5216] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5215] <... munmap resumed>) = 0 [pid 5216] <... openat resumed>) = 6 [pid 5215] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5216] ioctl(6, LOOP_SET_FD, 5 [pid 5215] <... openat resumed>) = 6 [pid 5216] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5215] ioctl(6, LOOP_SET_FD, 5 [pid 5217] ioctl(6, LOOP_SET_FD, 5 [pid 5216] ioctl(6, LOOP_CLR_FD [pid 5215] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5217] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5216] <... ioctl resumed>) = 0 [ 72.741054][ T5218] syz-executor166 (5218): drop_caches: 1 [pid 5215] ioctl(6, LOOP_CLR_FD [pid 5217] close(6 [pid 5215] <... ioctl resumed>) = 0 [pid 5214] close(6) = 0 [pid 5217] <... close resumed>) = 0 [pid 5217] close(5 [pid 5216] ioctl(6, LOOP_SET_FD, 5 [pid 5215] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5216] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5216] close(6 [pid 5215] close(6 [pid 5216] <... close resumed>) = 0 [pid 5215] <... close resumed>) = 0 [pid 5215] close(5 [pid 5216] close(5 [pid 5214] close(5 [pid 5216] <... close resumed>) = 0 [pid 5213] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5213] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5217] <... close resumed>) = 0 [pid 5218] <... sendfile resumed> => [103], 15) = 15 [pid 5216] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5215] <... close resumed>) = 0 [pid 5214] <... close resumed>) = 0 [pid 5213] <... pwritev resumed>) = 103 [pid 5213] exit_group(0) = ? [pid 5213] +++ exited with 0 +++ [pid 5072] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5213, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5217] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5214] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5072] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5216] <... open resumed>) = 5 [pid 5072] <... openat resumed>) = 3 [pid 5218] memfd_create("syzkaller", 0 [pid 5214] <... open resumed>) = 5 [pid 5072] ioctl(3, LOOP_CLR_FD [pid 5214] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5072] <... ioctl resumed>) = 0 [pid 5072] close(3 [pid 5215] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5072] <... close resumed>) = 0 [pid 5216] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5215] <... open resumed>) = 5 [pid 5072] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5215] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5217] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5218] <... memfd_create resumed>) = 5 [pid 5218] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5217] <... pwritev resumed>) = 103 [pid 5216] <... pwritev resumed>) = 103 [pid 5215] <... pwritev resumed>) = 103 [pid 5214] <... pwritev resumed>) = 103 [ 72.813820][ T5218] syz-executor166 (5218): drop_caches: 1 [pid 5217] exit_group(0./strace-static-x86_64: Process 5219 attached [pid 5216] exit_group(0 [pid 5215] exit_group(0 [pid 5214] exit_group(0 [pid 5072] <... clone resumed>, child_tidptr=0x55555677f650) = 5219 [pid 5217] <... exit_group resumed>) = ? [pid 5215] <... exit_group resumed>) = ? [pid 5217] +++ exited with 0 +++ [pid 5215] +++ exited with 0 +++ [pid 5069] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5215, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5217, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- [pid 5219] set_robust_list(0x55555677f660, 24) = 0 [pid 5216] <... exit_group resumed>) = ? [pid 5214] <... exit_group resumed>) = ? [pid 5078] restart_syscall(<... resuming interrupted clone ...> [pid 5069] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5078] <... restart_syscall resumed>) = 0 [pid 5069] <... openat resumed>) = 3 [pid 5069] ioctl(3, LOOP_CLR_FD) = 0 [pid 5069] close(3) = 0 [pid 5069] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555677f650) = 5220 ./strace-static-x86_64: Process 5220 attached [pid 5219] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5218] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5216] +++ exited with 0 +++ [pid 5214] +++ exited with 0 +++ [pid 5071] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5214, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=9 /* 0.09 s */} --- [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5216, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5219] <... prctl resumed>) = 0 [pid 5219] setpgid(0, 0 [pid 5078] <... openat resumed>) = 3 [pid 5219] <... setpgid resumed>) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5220] set_robust_list(0x55555677f660, 24 [pid 5219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5078] ioctl(3, LOOP_CLR_FD [pid 5071] <... openat resumed>) = 3 [pid 5070] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5071] ioctl(3, LOOP_CLR_FD [pid 5078] <... ioctl resumed>) = 0 [pid 5078] close(3 [pid 5071] <... ioctl resumed>) = 0 [pid 5070] <... openat resumed>) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5071] close(3 [pid 5078] <... close resumed>) = 0 [pid 5220] <... set_robust_list resumed>) = 0 [pid 5070] <... ioctl resumed>) = 0 [pid 5220] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] <... close resumed>) = 0 [pid 5070] close(3) = 0 [pid 5220] <... prctl resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5071] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5220] setpgid(0, 0) = 0 [pid 5220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5220] write(3, "1000", 4) = 4 [pid 5220] close(3) = 0 [pid 5220] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5220] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5220] sendfile(4, 3, [88] [pid 5071] <... clone resumed>, child_tidptr=0x55555677f650) = 5222 ./strace-static-x86_64: Process 5221 attached [pid 5078] <... clone resumed>, child_tidptr=0x55555677f650) = 5221 [pid 5070] <... clone resumed>, child_tidptr=0x55555677f650) = 5223 [pid 5221] set_robust_list(0x55555677f660, 24 [pid 5219] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5222 attached ./strace-static-x86_64: Process 5223 attached [pid 5221] <... set_robust_list resumed>) = 0 [pid 5219] write(3, "1000", 4 [pid 5222] set_robust_list(0x55555677f660, 24 [pid 5219] <... write resumed>) = 4 [pid 5223] set_robust_list(0x55555677f660, 24 [pid 5219] close(3 [pid 5222] <... set_robust_list resumed>) = 0 [pid 5222] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5219] <... close resumed>) = 0 [pid 5223] <... set_robust_list resumed>) = 0 [pid 5223] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5222] <... prctl resumed>) = 0 [pid 5223] <... prctl resumed>) = 0 [pid 5221] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5222] setpgid(0, 0 [pid 5223] setpgid(0, 0 [pid 5222] <... setpgid resumed>) = 0 [pid 5223] <... setpgid resumed>) = 0 [pid 5219] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5221] <... prctl resumed>) = 0 [pid 5221] setpgid(0, 0 [pid 5222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5222] <... openat resumed>) = 3 [pid 5223] write(3, "1000", 4 [pid 5222] write(3, "1000", 4) = 4 [pid 5222] close(3) = 0 [pid 5223] <... write resumed>) = 4 [pid 5222] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5223] close(3 [pid 5222] <... openat resumed>) = 3 [pid 5223] <... close resumed>) = 0 [pid 5222] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5223] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5222] <... openat resumed>) = 4 [pid 5223] <... openat resumed>) = 3 [pid 5222] sendfile(4, 3, [88] [pid 5221] <... setpgid resumed>) = 0 [pid 5219] <... openat resumed>) = 3 [pid 5223] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5219] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5223] <... openat resumed>) = 4 [pid 5223] sendfile(4, 3, [88] [pid 5221] <... openat resumed>) = 3 [pid 5221] write(3, "1000", 4 [pid 5219] <... openat resumed>) = 4 [pid 5221] <... write resumed>) = 4 [pid 5219] sendfile(4, 3, [88] [pid 5221] close(3) = 0 [pid 5218] <... write resumed>) = 2097152 [pid 5221] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5221] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5221] sendfile(4, 3, [88] [pid 5218] munmap(0x7f299346a000, 138412032) = 0 [pid 5218] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 6 [pid 5218] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5218] ioctl(6, LOOP_CLR_FD) = 0 [pid 5218] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5218] close(6) = 0 [pid 5218] close(5) = 0 [pid 5218] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5218] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5218] exit_group(0) = ? [pid 5218] +++ exited with 0 +++ [pid 5076] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5218, si_uid=0, si_status=0, si_utime=0, si_stime=11 /* 0.11 s */} --- [pid 5076] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5076] ioctl(3, LOOP_CLR_FD) = 0 [pid 5076] close(3) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5224 attached [pid 5224] set_robust_list(0x55555677f660, 24) = 0 [pid 5076] <... clone resumed>, child_tidptr=0x55555677f650) = 5224 [pid 5224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5224] setpgid(0, 0) = 0 [pid 5224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5224] write(3, "1000", 4) = 4 [pid 5224] close(3) = 0 [pid 5224] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5224] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 73.072956][ T5220] syz-executor166 (5220): drop_caches: 1 [ 73.074267][ T5223] syz-executor166 (5223): drop_caches: 1 [ 73.080987][ T5219] syz-executor166 (5219): drop_caches: 1 [ 73.099348][ T5222] syz-executor166 (5222): drop_caches: 1 [ 73.130771][ T5221] syz-executor166 (5221): drop_caches: 1 [pid 5224] sendfile(4, 3, [88] [pid 5223] <... sendfile resumed> => [103], 15) = 15 [pid 5222] <... sendfile resumed> => [103], 15) = 15 [pid 5220] <... sendfile resumed> => [103], 15) = 15 [pid 5219] <... sendfile resumed> => [103], 15) = 15 [pid 5223] memfd_create("syzkaller", 0 [pid 5222] memfd_create("syzkaller", 0 [pid 5219] memfd_create("syzkaller", 0 [pid 5220] memfd_create("syzkaller", 0 [pid 5223] <... memfd_create resumed>) = 5 [pid 5223] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5222] <... memfd_create resumed>) = 5 [pid 5222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5221] <... sendfile resumed> => [103], 15) = 15 [pid 5220] <... memfd_create resumed>) = 5 [pid 5219] <... memfd_create resumed>) = 5 [pid 5220] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5220] <... mmap resumed>) = 0x7f299346a000 [pid 5221] memfd_create("syzkaller", 0 [pid 5219] <... mmap resumed>) = 0x7f299346a000 [ 73.206951][ T5223] syz-executor166 (5223): drop_caches: 1 [ 73.213615][ T5222] syz-executor166 (5222): drop_caches: 1 [ 73.220744][ T5220] syz-executor166 (5220): drop_caches: 1 [ 73.224634][ T5224] syz-executor166 (5224): drop_caches: 1 [ 73.226697][ T5219] syz-executor166 (5219): drop_caches: 1 [ 73.250780][ T5221] syz-executor166 (5221): drop_caches: 1 [pid 5223] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5221] <... memfd_create resumed>) = 5 [pid 5221] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5222] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5224] <... sendfile resumed> => [103], 15) = 15 [pid 5222] <... write resumed>) = 2097152 [pid 5219] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5220] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5224] memfd_create("syzkaller", 0 [pid 5223] <... write resumed>) = 2097152 [pid 5222] munmap(0x7f299346a000, 138412032 [pid 5221] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5219] <... write resumed>) = 2097152 [pid 5224] <... memfd_create resumed>) = 5 [pid 5223] munmap(0x7f299346a000, 138412032 [pid 5220] <... write resumed>) = 2097152 [pid 5224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f299346a000 [pid 5220] munmap(0x7f299346a000, 138412032 [ 73.285675][ T5224] syz-executor166 (5224): drop_caches: 1 [pid 5219] munmap(0x7f299346a000, 138412032 [pid 5223] <... munmap resumed>) = 0 [pid 5222] <... munmap resumed>) = 0 [pid 5221] <... write resumed>) = 2097152 [pid 5220] <... munmap resumed>) = 0 [pid 5219] <... munmap resumed>) = 0 [pid 5223] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5222] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5221] munmap(0x7f299346a000, 138412032 [pid 5220] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5219] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5224] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5223] <... openat resumed>) = 6 [pid 5222] <... openat resumed>) = 6 [pid 5220] <... openat resumed>) = 6 [pid 5219] <... openat resumed>) = 6 [pid 5223] ioctl(6, LOOP_SET_FD, 5 [pid 5222] ioctl(6, LOOP_SET_FD, 5 [pid 5221] <... munmap resumed>) = 0 [pid 5220] ioctl(6, LOOP_SET_FD, 5 [pid 5219] ioctl(6, LOOP_SET_FD, 5 [pid 5223] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5222] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5219] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5220] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5219] ioctl(6, LOOP_CLR_FD [pid 5223] ioctl(6, LOOP_CLR_FD [pid 5220] ioctl(6, LOOP_CLR_FD [pid 5219] <... ioctl resumed>) = 0