overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
======================================================
WARNING: possible circular locking dependency detected
4.14.225-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.5/21594 is trying to acquire lock:
 (&ovl_i_mutex_dir_key[depth]){++++}, at: [<ffffffff8189d20b>] inode_lock_shared include/linux/fs.h:729 [inline]
 (&ovl_i_mutex_dir_key[depth]){++++}, at: [<ffffffff8189d20b>] do_last fs/namei.c:3333 [inline]
 (&ovl_i_mutex_dir_key[depth]){++++}, at: [<ffffffff8189d20b>] path_openat+0x149b/0x2970 fs/namei.c:3569

but task is already holding lock:
 (&sig->cred_guard_mutex){+.+.}, at: [<ffffffff81880c59>] prepare_bprm_creds fs/exec.c:1404 [inline]
 (&sig->cred_guard_mutex){+.+.}, at: [<ffffffff81880c59>] do_execveat_common+0x319/0x1f30 fs/exec.c:1748

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&sig->cred_guard_mutex){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
       lock_trace fs/proc/base.c:407 [inline]
       proc_pid_syscall+0xa7/0x2a0 fs/proc/base.c:639
       proc_single_show+0xe7/0x150 fs/proc/base.c:761
       seq_read+0x4cf/0x1120 fs/seq_file.c:237
       do_loop_readv_writev fs/read_write.c:695 [inline]
       do_loop_readv_writev fs/read_write.c:682 [inline]
       do_iter_read+0x3eb/0x5b0 fs/read_write.c:919
       vfs_readv+0xc8/0x120 fs/read_write.c:981
       do_preadv fs/read_write.c:1065 [inline]
       SYSC_preadv fs/read_write.c:1115 [inline]
       SyS_preadv+0x15a/0x200 fs/read_write.c:1110
       do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
       entry_SYSCALL_64_after_hwframe+0x46/0xbb

-> #2 (&p->lock){+.+.}:
       __mutex_lock_common kernel/locking/mutex.c:756 [inline]
       __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
       seq_read+0xba/0x1120 fs/seq_file.c:165
       proc_reg_read+0xee/0x1a0 fs/proc/inode.c:217
       do_loop_readv_writev fs/read_write.c:695 [inline]
       do_loop_readv_writev fs/read_write.c:682 [inline]
       do_iter_read+0x3eb/0x5b0 fs/read_write.c:919
       vfs_readv+0xc8/0x120 fs/read_write.c:981
       kernel_readv fs/splice.c:361 [inline]
       default_file_splice_read+0x418/0x910 fs/splice.c:416
       do_splice_to+0xfb/0x140 fs/splice.c:880
       splice_direct_to_actor+0x207/0x730 fs/splice.c:952
       do_splice_direct+0x164/0x210 fs/splice.c:1061
       do_sendfile+0x47f/0xb30 fs/read_write.c:1441
       SYSC_sendfile64 fs/read_write.c:1502 [inline]
       SyS_sendfile64+0xff/0x110 fs/read_write.c:1488
       do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
       entry_SYSCALL_64_after_hwframe+0x46/0xbb

-> #1 (sb_writers#3){.+.+}:
       percpu_down_read_preempt_disable include/linux/percpu-rwsem.h:36 [inline]
       percpu_down_read include/linux/percpu-rwsem.h:59 [inline]
       __sb_start_write+0x64/0x260 fs/super.c:1342
       sb_start_write include/linux/fs.h:1549 [inline]
       mnt_want_write+0x3a/0xb0 fs/namespace.c:386
       ovl_xattr_set+0x4d/0x290 fs/overlayfs/inode.c:214
       ovl_posix_acl_xattr_set+0x2b7/0x830 fs/overlayfs/super.c:762
       __vfs_setxattr+0xdc/0x130 fs/xattr.c:150
       __vfs_setxattr_noperm+0xfd/0x3d0 fs/xattr.c:181
       __vfs_setxattr_locked+0x14d/0x250 fs/xattr.c:239
       vfs_setxattr+0xcf/0x230 fs/xattr.c:256
       setxattr+0x1a9/0x300 fs/xattr.c:523
       path_setxattr+0x118/0x130 fs/xattr.c:542
       SYSC_setxattr fs/xattr.c:557 [inline]
       SyS_setxattr+0x36/0x50 fs/xattr.c:553
       do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
       entry_SYSCALL_64_after_hwframe+0x46/0xbb

-> #0 (&ovl_i_mutex_dir_key[depth]){++++}:
       lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
       down_read+0x36/0x80 kernel/locking/rwsem.c:24
       inode_lock_shared include/linux/fs.h:729 [inline]
       do_last fs/namei.c:3333 [inline]
       path_openat+0x149b/0x2970 fs/namei.c:3569
       do_filp_open+0x179/0x3c0 fs/namei.c:3603
       do_open_execat+0xd3/0x450 fs/exec.c:849
       do_execveat_common+0x711/0x1f30 fs/exec.c:1755
       do_execve fs/exec.c:1860 [inline]
       SYSC_execve fs/exec.c:1941 [inline]
       SyS_execve+0x3b/0x50 fs/exec.c:1936
       do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
       entry_SYSCALL_64_after_hwframe+0x46/0xbb

other info that might help us debug this:

Chain exists of:
  &ovl_i_mutex_dir_key[depth] --> &p->lock --> &sig->cred_guard_mutex

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&sig->cred_guard_mutex);
                               lock(&p->lock);
                               lock(&sig->cred_guard_mutex);
  lock(&ovl_i_mutex_dir_key[depth]);

 *** DEADLOCK ***

1 lock held by syz-executor.5/21594:
 #0:  (&sig->cred_guard_mutex){+.+.}, at: [<ffffffff81880c59>] prepare_bprm_creds fs/exec.c:1404 [inline]
 #0:  (&sig->cred_guard_mutex){+.+.}, at: [<ffffffff81880c59>] do_execveat_common+0x319/0x1f30 fs/exec.c:1748

stack backtrace:
CPU: 1 PID: 21594 Comm: syz-executor.5 Not tainted 4.14.225-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1258
 check_prev_add kernel/locking/lockdep.c:1905 [inline]
 check_prevs_add kernel/locking/lockdep.c:2022 [inline]
 validate_chain kernel/locking/lockdep.c:2464 [inline]
 __lock_acquire+0x2e0e/0x3f20 kernel/locking/lockdep.c:3491
 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
 down_read+0x36/0x80 kernel/locking/rwsem.c:24
 inode_lock_shared include/linux/fs.h:729 [inline]
 do_last fs/namei.c:3333 [inline]
 path_openat+0x149b/0x2970 fs/namei.c:3569
 do_filp_open+0x179/0x3c0 fs/namei.c:3603
 do_open_execat+0xd3/0x450 fs/exec.c:849
 do_execveat_common+0x711/0x1f30 fs/exec.c:1755
 do_execve fs/exec.c:1860 [inline]
 SYSC_execve fs/exec.c:1941 [inline]
 SyS_execve+0x3b/0x50 fs/exec.c:1936
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x465f69
RSP: 002b:00007f440d8ce188 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465f69
RDX: 00000000200005c0 RSI: 00000000200004c0 RDI: 0000000020000380
RBP: 00000000004bfa8f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffe967b445f R14: 00007f440d8ce300 R15: 0000000000022000
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: failed to resolve './file0': -2
overlayfs: missing 'lowerdir'
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: missing 'lowerdir'
overlayfs: failed to resolve './file0�E���9�w�u
�V	B��
�{ږ��b��i>
[y^g(��': -2
overlayfs: failed to resolve './file1': -2
overlayfs: failed to resolve './file0�E���9�w�u
�V	B��
�{ږ��b��i>
[y^g(��': -2
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "loworkdir=./file0" or missing value
overlayfs: failed to resolve './file1': -2
overlayfs: unrecognized mount option "loworkdir=./file0" or missing value
overlayfs: unrecognized mount option "18446744073709551615" or missing value
overlayfs: failed to resolve './file0': -2
overlayfs: unrecognized mount option "18446744073709551615" or missing value
overlayfs: failed to resolve './file0': -2
overlayfs: failed to resolve './file1': -2
overlayfs: unrecognized mount option "lo��" or missing value
overlayfs: unrecognized mount option "lo��" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "�Lardir=./file1" or missing value
overlayfs: unrecognized mount option "workdir=" or missing value
9pnet_virtio: no channels available for device syz
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "workdir=" or missing value
hpfs: bad mount options.
print_req_error: I/O error, dev loop5, sector 2
overlayfs: unrecognized mount option "�Lardir=./file1" or missing value
Buffer I/O error on dev loop5, logical block 2, async page read
print_req_error: I/O error, dev loop5, sector 3
Buffer I/O error on dev loop5, logical block 3, async page read
print_req_error: I/O error, dev loop5, sector 4
Buffer I/O error on dev loop5, logical block 4, async page read
print_req_error: I/O error, dev loop5, sector 5
Buffer I/O error on dev loop5, logical block 5, async page read
print_req_error: I/O error, dev loop5, sector 6
Buffer I/O error on dev loop5, logical block 6, async page read
print_req_error: I/O error, dev loop5, sector 7
Buffer I/O error on dev loop5, logical block 7, async page read
overlayfs: failed to resolve '&/bus': -2
overlayfs: unrecognized mount option "up."��P�V1iP�|Lperdir=./bile1" or missing value
overlayfs: failed to resolve '&/bus': -2
overlayfs: unrecognized mount option "up."��P�V1iP�|Lperdir=./bile1" or missing value
hpfs: bad mount options.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
print_req_error: I/O error, dev loop5, sector 0
overlayfs: unrecognized mount option "workdirʳ�� �Nų��Re8l=./file0��^%W��y����㢙.j��c��" or missing value
overlayfs: failed to resolve './f�le0': -2
overlayfs: './file1' not a directory
tmpfs: Bad value 'ne~er' for mount option 'huge'
overlayfs: unrecognized mount option "��������" or missing value
overlayfs: unrecognized mount option "��������" or missing value
print_req_error: I/O error, dev loop5, sector 0
overlayfs: unrecognized mount option "workdirʳ�� �Nų��Re8l=./file0��^%W��y����㢙.j��c��" or missing value
tmpfs: Bad value 'ne~er' for mount option 'huge'
overlayfs: missing 'workdir'
overlayfs: missing 'lowerdir'
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: missing 'workdir'
overlayfs: unrecognized mount option "up�erdiir=./file0" or missing value
overlayfs: unrecognized mount option "up�erdiir=./file0" or missing value
overlayfs: unrecognized mount option "metacopy=off" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "upperfir=./file1" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "metacopy=off" or missing value
overlayfs: unrecognized mount option "l" or missing value
overlayfs: unrecognized mount option "overlay" or missing value
overlayfs: unrecognized mount option "l" or missing value
overlayfs: unrecognized mount option "�p�erfir=./file1" or missing value
overlayfs: unrecognized mount option "overlay" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "�p�erfir=./file1" or missing value
overlayfs: unrecognized mount option "upperdir>" or missing value
overlayfs: unrecognized mount option "upperdir>" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "lowerdir���us" or missing value
overlayfs: unrecognized mount option "lowdrdir=./bus" or missing value
overlayfs: unrecognized mount option "upp�:k0{erdir=./file1" or missing value
overlayfs: unrecognized mount option "lowdrdir=./bus" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "upperle1<lowerdiS=./bus" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: missing 'lowerdir'
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "lowerdorkdir=./file0" or missing value
overlayfs: unrecognized mount option "low�rdir=./bus" or missing value
overlayfs: missing 'lowerdir'
overlayfs: missing 'lowerdir'
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "low�rdir=./bus" or missing value
VFS: could not find a valid V7 on loop2.
overlayfs: failed to resolve './file0�ceد ': -2
overlayfs: missing 'lowerdir'
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: missing 'lowerdir'
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: missing 'lowerdir'
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "01777777777777777777777" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "lowerzir=./bu6" or missing value
overlayfs: missing 'lowerdir'
vlan0: Invalid MTU 125711 requested, hw max 65535
A link change request failed with some changes committed already. Interface vlan0 may have been left with an inconsistent configuration, please check.
overlayfs: unrecognized mount option "lowerzir=./bu6" or missing value
overlayfs: unrecognized mount option "01777777777777777777777" or missing value
overlayfs: unrecognized mount option "lowerdiir=./file0" or missing value
print_req_error: I/O error, dev loop5, sector 0
overlayfs: missing 'lowerdir'
overlayfs: unrecognized mount option "lowerdiir=./file0H" or missing value
overlayfs: missing 'lowerdir'
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: missing 'lowerdir'
overlayfs: missing 'lowerdir'
overlayfs: missing 'lowerdir'
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "�" or missing value
overlayfs: unrecognized mount option "�" or missing value
overlayfs: missing 'lowerdir'
overlayfs: failed to resolve './S': -2
overlayfs: failed to resolve './S': -2
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "lowerdi" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "workdiz=./file0" or missing value
overlayfs: unrecognized mount option "u�e	�W����g���pperdir=.Ffile1" or missing value
overlayfs: unrecognized mount option "lowerdi" or missing value
overlayfs: unrecognized mount option "workdiz=./file0" or missing value
overlayfs: unrecognized mount option "u�e	�W����g���pperdir=.Ffile1" or missing value
overlayfs: unrecognized mount option "workdio=./file0" or missing value
overlayfs: unrecognized mount option "workdio=./file0" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "lowerdi" or missing value
overlayfs: unrecognized mount option "�pperdir=./file1" or missing value
overlayfs: unrecognized mount option "lowerdirorkdir=./file0W-��o
Sץ�4Uf�R0x�}K���Ɗ<.0hm�	|���o�{�hpo}��
�}�%��iju1��Rȳ�;&J���v~�+�8!y�w��" or missing value
Unknown ioctl 30474
overlayfs: unrecognized mount option "u
" or missing value
overlayfs: unrecognized mount option "�pperdir=./file1" or missing value
Unknown ioctl 30474
overlayfs: unrecognized mount option "lowerdirorkdir=./file0W-��o
Sץ�4Uf�R0x�}K���Ɗ<.0hm�	|���o�{�hpo}��
�}�%��iju1��Rȳ�;&J���v~�+�8!y�w��" or missing value
overlayfs: unrecognized mount option "u
" or missing value
overlayfs: unrecognized mount option "work" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: failed to resolve './file1': -2
overlayfs: failed to resolve './file1': -2
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "work" or missing value
overlayfs: failed to resolve './file0': -2
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: failed to resolve './file0': -2
overlayfs: unrecognized mount option "work" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: failed to resolve './file1': -2
overlayfs: unrecognized mount option "lowerdir=" or missing value
overlayfs: failed to resolve './file1': -2
overlayfs: unrecognized mount option "lowerdir=" or missing value
overlayfs: workdir and upperdir must be separate subtrees
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "upkerdir=./file1" or missing value
overlayfs: unrecognized mount option "upkerdir=./file1" or missing value
overlayfs: workdir and upperdir must be separate subtrees
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "lowerdirorkdir=./file����z��" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "lowerdirorkdir=./file����z��" or missing value
overlayfs: workdir and upperdir must be separate subtrees
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
gfs2: gfs2 mount does not exist
overlayfs: unrecognized mount option "upperdir&�q=./fileQh�" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "upperdir&�q=./fileQh�" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: failed to resolve './fil': -2
gfs2: gfs2 mount does not exist
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "lowdir=./fil;" or missing value
overlayfs: unrecognized mount option "lowdir=./fil;" or missing value
overlayfs: failed to resolve './fil': -2
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
print_req_error: I/O error, dev loop2, sector 2
print_req_error: I/O error, dev loop2, sector 0
print_req_error: I/O error, dev loop2, sector 0
print_req_error: I/O error, dev loop2, sector 18
print_req_error: I/O error, dev loop2, sector 30
print_req_error: I/O error, dev loop2, sector 36
VFS: unable to find oldfs superblock on device loop2
overlayfs: unrecognized mount option "lowxrdir=./b
" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "rdir=./bus" or missing value
overlayfs: unrecognized mount option "lowxrdir=./b
" or missing value
print_req_error: I/O error, dev loop2, sector 2
print_req_error: I/O error, dev loop2, sector 0
print_req_error: I/O error, dev loop2, sector 0
print_req_error: I/O error, dev loop2, sector 18
VFS: unable to find oldfs superblock on device loop2
overlayfs: unrecognized mount option "rdir=./bus" or missing value
overlayfs: failed to resolve './fil': -2
overlayfs: failed to resolve './file0': -2
overlayfs: failed to resolve './file0': -2
overlayfs: unrecognized mount option "*}�b9l"upperdir=./file1" or missing value
overlayfs: failed to resolve './file': -2
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "*}�b9l"upperdir=./file1" or missing value
overlayfs: unrecognized mount option "nfs_export=on" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: failed to resolve './file': -2
overlayfs: unrecognized mount option "nfs_export=on" or missing value
overlayfs: unrecognized mount option "lowerdir=./bus" or missing value
overlayfs: unrecognized mount option "lowerdir=./bus" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: failed to resolve './file': -2
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: missing 'lowerdir'
overlayfs: unrecognized mount option "upper��r=rrkdir=./fil�e" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "%" or missing value
overlayfs: unrecognized mount option "upperir=./file34lowerdir=./bus" or missing value
overlayfs: failed to resolve './file0��od�tS1��׌;
*��': -2
overlayfs: failed to resolve './file0��od�tS1��׌;
*��': -2
overlayfs: unrecognized mount option "upperir=./file34lowerdir=./bus" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "upper`ir=./file1" or missing value
overlayfs: unrecognized mount option "upper`ir=./file1" or missing value
overlayfs: unrecognized mount option "redirect_dir=./bus/file0" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
FAT-fs (loop3): Unrecognized mount option "euid=00000000000000000000" or missing value
FAT-fs (loop3): Unrecognized mount option "euid=00000000000000000000" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "upperdmr=./file1" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: failed to resolve './fil�6': -2
overlayfs: unrecognized mount option "upperdmr=./file1" or missing value
overlayfs: failed to resolve './fil�6': -2
overlayfs: unrecognized mount option "upper	" or missing value
mmap: syz-executor.1 (22614) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.txt.
overlayfs: failed to resolve './file0': -2
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: failed to resolve './filg0': -2
overlayfs: failed to resolve './file0': -2
overlayfs: unrecognized mount option "upper	" or missing value
overlayfs: unrecognized mount option "xino=on" or missing value
overlayfs: failed to resolve './filg0': -2
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
tmpfs: No value for mount option 'overlay'
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
tmpfs: Bad value 'bind=static:-38' for mount option 'mpol'
overlayfs: unrecognized mount option "upper`iQ=./file1" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: failed to resolve './5���5': -2
overlayfs: failed to resolve './5���5': -2
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "workdib=./file0" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "workdib=./file0" or missing value
squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on loop2
overlayfs: failed to resolve './file1': -2
overlayfs: fs on './bus' does not support file handles, falling back to index=off.
overlayfs: unrecognized mount option "uppe�dir=./file1" or missing value
squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on loop2
overlayfs: failed to resolve './file1': -2
overlayfs: unrecognized mount option "uppe�dir=./file1" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: unrecognized mount option "upperdir)./file1" or missing value
overlayfs: unrecognized mount option "upperdir)./file1" or missing value
overlayfs: unrecognized mount option "upp�rdir=./file1" or missing value
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: missing 'lowerdir'
overlayfs: unrecognized mount option "upp�rdir=./file1" or missing value
hfsplus: unable to parse mount options
overlayfs: unrecognized mount option "�$��"�p�H�BAQ�;�z��ur���HN��
J	a�" or missing value
hfsplus: unable to parse mount options
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: failed to resolve './file0X7�a���IZ �@X�IR���d��': -2
autofs4:pid:22831:autofs4_fill_super: called with bogus options
overlayfs: failed to resolve './file0X7�a���IZ �@X�IR���d��': -2
autofs4:pid:22851:autofs4_fill_super: called with bogus options
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection.
overlayfs: failed to resolve './file1': -2
overlayfs: unrecognized mount option "uppErdir=./file1��owerdir=./bus" or missing value
overlayfs: failed to resolve './file1': -2
overlayfs: unrecognized mount option "uppErdir=./file1��owerdir=./bus" or missing value
overlayfs: unrecognized mount option "vorkdVr=./fi|0" or missing value
overlayfs: unrecognized mount option "uqpe " or missing value
overlayfs: unrecognized mount option "uqpe " or missing value
overlayfs: unrecognized mount option "vorkdVr=./fi|0" or missing value
overlayfs: unrecognized mount option "01777777777777777777777" or missing value