overlayfs: unrecognized mount option "ppe" or missing value ====================================================== overlayfs: unrecognized mount option "lowerdx:ile0" or missing value WARNING: possible circular locking dependency detected 4.14.256-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.4/14367 is trying to acquire lock: (&ovl_i_mutex_dir_key[depth]){++++}, at: [] inode_lock_shared include/linux/fs.h:729 [inline] (&ovl_i_mutex_dir_key[depth]){++++}, at: [] do_last fs/namei.c:3333 [inline] (&ovl_i_mutex_dir_key[depth]){++++}, at: [] path_openat+0x149b/0x2970 fs/namei.c:3569 but task is already holding lock: (&sig->cred_guard_mutex){+.+.}, at: [] prepare_bprm_creds fs/exec.c:1404 [inline] (&sig->cred_guard_mutex){+.+.}, at: [] 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 overlayfs: './bus' not a directory (&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_stack+0x13f/0x2f0 fs/proc/base.c:457 overlayfs: missing 'lowerdir' proc_single_show+0xe7/0x150 fs/proc/base.c:761 seq_read+0x4e4/0x1180 fs/seq_file.c:240 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/0x1180 fs/seq_file.c:168 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 __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_lsetxattr fs/xattr.c:564 [inline] SyS_lsetxattr+0x33/0x40 fs/xattr.c:560 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.4/14367: #0: (&sig->cred_guard_mutex){+.+.}, at: [] prepare_bprm_creds fs/exec.c:1404 [inline] #0: (&sig->cred_guard_mutex){+.+.}, at: [] do_execveat_common+0x319/0x1f30 fs/exec.c:1748 stack backtrace: CPU: 0 PID: 14367 Comm: syz-executor.4 Not tainted 4.14.256-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: 0033:0x7f2b77ce8b19 RSP: 002b:00007f2b76c5e188 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 00007f2b77dfbf60 RCX: 00007f2b77ce8b19 RDX: 0000000020000740 RSI: 00000000200004c0 RDI: 0000000020000000 RBP: 00007f2b77d42f9f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc74d0e52f R14: 00007f2b76c5e300 R15: 0000000000022000 overlayfs: filesystem on './bus' not supported as upperdir overlayfs: unrecognized mount option "ppe" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: unrecognized mount option "audit" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: fs on 'file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: missing 'lowerdir' overlayfs: 'file0' not a directory overlayfs: unrecognized mount option "ppe" or missing value hfs: can't find a HFS filesystem on dev loop0 overlayfs: missing 'lowerdir' overlayfs: fs on './file0' does not support file handles, falling back to index=off. hfs: can't find a HFS filesystem on dev loop0 overlayfs: missing 'lowerdir' overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: maximum fs stacking depth exceeded overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: missing 'lowerdir' overlayfs: filesystem on './bus' not supported as upperdir overlayfs: 'file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "lower" or missing value overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: filesystem on './bus' not supported as upperdir overlayfs: unrecognized mount option "lower" or missing value overlayfs: unrecognized mount option "lower" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: filesystem on './bus' not supported as upperdir overlayfs: maximum fs stacking depth exceeded overlayfs: filesystem on './bus' not supported as upperdir overlayfs: filesystem on './bus' not supported as upperdir audit: type=1804 audit(1638571484.680:9): pid=14581 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir021186836/syzkaller.pEKDGe/255/bus/file0" dev="sda1" ino=14669 res=1 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "uerdir=./bus" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory audit: type=1804 audit(1638571484.790:10): pid=14581 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.0" name="/root/syzkaller-testdir021186836/syzkaller.pEKDGe/255/bus/bus/file0" dev="sda1" ino=14748 res=1 overlayfs: failed to resolve './fil': -2 overlayfs: unrecognized mount option "uerdir=./bus" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: failed to resolve './fil': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. hfs: unable to parse mount options overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: failed to resolve './fil': -2 overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: 'file0' not a directory overlayfs: './file0' not a directory overlayfs: failed to resolve './file': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "HileTdm" or missing value efs: cannot read volume header overlayfs: failed to resolve './file': -2 overlayfs: unrecognized mount option "uppedir=./file1" or missing value overlayfs: fs on '.' does not support file handles, falling back to index=off. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. overlayfs: unrecognized mount option "HileTdm" or missing value overlayfs: filesystem on './bus' not supported as upperdir overlayfs: unrecognized mount option "uppedir=./file1" or missing value overlayfs: 'file0' not a directory overlayfs: failed to resolve './file': -2 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: filesystem on './bus' not supported as upperdir overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: filesystem on './bus' not supported as upperdir overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: failed to resolve './file0': -2 overlayfs: filesystem on './bus' not supported as upperdir overlayfs: 'file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: './file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. EXT4-fs (loop4): VFS: Can't find ext4 filesystem overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: filesystem on './bus' not supported as upperdir overlayfs: failed to resolve './file09Œp!;': -2 overlayfs: unrecognized mount option "xino=on" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. EXT4-fs (loop4): VFS: Can't find ext4 filesystem overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: failed to resolve './file09Œp!;': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: unrecognized mount option "workdij=./file1" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: unrecognized mount option "workdij=./file1" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. hfs: gid requires an argument hfs: unable to parse mount options overlayfs: failed to resolve 'file000000000000000000000000': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. hfs: gid requires an argument hfs: unable to parse mount options overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: failed to resolve 'file000000000000000000000000': -2 overlayfs: filesystem on './bus' not supported as upperdir overlayfs: filesystem on './bus' not supported as upperdir hfs: gid requires an argument hfs: unable to parse mount options overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: 'file0' not a directory overlayfs: filesystem on './bus' not supported as upperdir overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: unrecognized mount option "ƖIf]Y.晬~k" or missing value IPVS: set_ctl: invalid protocol: 94 224.0.0.2:20003 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. hfs: gid requires an argument overlayfs: unrecognized mount option "ƖIf]Y.晬~k" or missing value hfs: unable to parse mount options overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory hfs: gid requires an argument hfs: unable to parse mount options overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: 'file0' not a directory overlayfs: unrecognized mount option "4" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "4" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: unrecognized mount option "$werdir=.:file0פȄ9:zs" or missing value overlayfs: unrecognized mount option "upperdEAir=./bus" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. EXT4-fs (loop3): VFS: Can't find ext4 filesystem squashfs: SQUASHFS error: Can't find a SQUASHFS superblock on loop0 overlayfs: unrecognized mount option "$werdir=.:file0פȄ9:zs" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "upperdEAir=./bus" or missing value overlayfs: 'file0' not a directory overlayfs: unrecognized mount option "xino=off" or missing value overlayfs: unrecognized mount option "uZhMppperdir=./bus" or missing value overlayfs: failed to resolve './file1': -2 overlayfs: 'file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "uZhMppperdir=./bus" or missing value overlayfs: failed to resolve './file1': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: 'file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: failed to resolve './file1': -2 print_req_error: I/O error, dev loop0, sector 0 overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: unrecognized mount option "uppe=˃rdirK=./bus" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "uppe=˃rdirK=./bus" or missing value overlayfs: failed to resolve 'file0U?=+na{U|][v57pgu'Zf<•I3&?>a&h;': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: failed to resolve 'file0U?=+na{U|][v57pgu'Zf<•I3&?>a&h;': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: filesystem on './bus' not supported as upperdir overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "redirect_dir=./bus/file0/file0" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "redirect_dir=./bus/file0/file0" or missing value overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: 'file0' not a directory overlayfs: filesystem on './bus' not supported as upperdir overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: './file1' not a directory overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: failed to resolve './file1': -2 hfs: gid requires an argument overlayfs: failed to resolve './file0': -2 hfs: unable to parse mount options overlayfs: 'file0' not a directory overlayfs: failed to resolve './file1': -2 overlayfs: failed to resolve './file0': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: failed to resolve './file0': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: failed to resolve './file1': -2 overlayfs: './file0' not a directory overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: failed to resolve './file0': -2 overlayfs: 'file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: failed to resolve './file0': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: failed to resolve './file0': -2 overlayfs: 'file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: 'file0' not a directory overlayfs: './file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: maximum fs stacking depth exceeded overlayfs: filesystem on './bus' not supported as upperdir overlayfs: failed to resolve 'fil0D =I': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: unrecognized mount option "l+K^"4ɘPta0-8V" or missing value hfs: gid requires an argument hfs: unable to parse mount options ufs: ufs was compiled with read-only support, can't be mounted as read-write overlayfs: failed to resolve 'fil0D =I': -2 overlayfs: fs on '.' does not support file handles, falling back to index=off. ufs: ufs was compiled with read-only support, can't be mounted as read-write overlayfs: unrecognized mount option "l+K^"4ɘPta0-8V" or missing value overlayfs: 'file0' not a directory overlayfs: filesystem on './bus' not supported as upperdir overlayfs: failed to resolve '.': -2 overlayfs: unrecognized mount option "0x00000000000000000x000000000000001dzE?B 8-F[s RܔNEh<ƎL=Zq `Jg26YzYkVmH+W=UNᦟ.0Y}]b8_6В" or missing value overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: './file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: filesystem on './bus' not supported as upperdir overlayfs: missing 'lowerdir' overlayfs: failed to resolve './file0': -2 overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: maximum fs stacking depth exceeded overlayfs: filesystem on './bus' not supported as upperdir overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: failed to resolve './file0': -2 overlayfs: missing 'lowerdir' overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: failed to resolve './file0': -2 overlayfs: missing 'lowerdir' overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory overlayfs: failed to resolve './file0': -2 overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: missing 'lowerdir' overlayfs: filesystem on './bus' not supported as upperdir F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0) overlayfs: failed to resolve './file0': -2 F2FS-fs (loop3): Can't find valid F2FS filesystem in 1th superblock overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: failed to resolve 'file0V?BnL!Bt': -2 overlayfs: failed to resolve './file0': -2 overlayfs: missing 'lowerdir' overlayfs: 'file0' not a directory overlayfs: filesystem on './bus' not supported as upperdir F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop3): Can't find valid F2FS filesystem in 2th superblock overlayfs: failed to resolve './file0': -2 overlayfs: missing 'lowerdir' overlayfs: missing 'lowerdir' F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop3): Can't find valid F2FS filesystem in 1th superblock REISERFS warning (device loop0): super-6504 reiserfs_getopt: the option "nolargeio" requires an argument overlayfs: missing 'lowerdir' F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0) overlayfs: filesystem on './bus' not supported as upperdir overlayfs: missing 'lowerdir' F2FS-fs (loop3): Can't find valid F2FS filesystem in 2th superblock overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: 'file0' not a directory REISERFS warning (device loop0): super-6504 reiserfs_getopt: the option "nolargeio" requires an argument F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop3): Can't find valid F2FS filesystem in 1th superblock overlayfs: missing 'lowerdir' overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: missing 'lowerdir' overlayfs: 'file0' not a directory overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: filesystem on './bus' not supported as upperdir overlayfs: filesystem on './bus' not supported as upperdir overlayfs: 'file0' not a directory overlayfs: failed to resolve './bus': -2 overlayfs: unrecognized mount option "lowerdir" or missing value overlayfs: 'file0' not a directory overlayfs: unrecognized mount option "" or missing value overlayfs: failed to resolve './bus': -2 hfs: gid requires an argument overlayfs: unrecognized mount option "lowerdir" or missing value hfs: unable to parse mount options EXT4-fs (loop0): VFS: Can't find ext4 filesystem overlayfs: failed to resolve './file0': -2 print_req_error: I/O error, dev loop0, sector 0 overlayfs: 'file0' not a directory Buffer I/O error on dev loop0, logical block 0, async page read print_req_error: I/O error, dev loop0, sector 4 overlayfs: unrecognized mount option "lowerdir" or missing value Buffer I/O error on dev loop0, logical block 2, async page read print_req_error: I/O error, dev loop0, sector 6 overlayfs: unrecognized mount option "" or missing value Buffer I/O error on dev loop0, logical block 3, async page read overlayfs: filesystem on './bus' not supported as upperdir overlayfs: './file0' not a directory overlayfs: missing 'lowerdir' overlayfs: fs on './file0' does not support file handles, falling back to index=off. overlayfs: failed to resolve 'f': -2 overlayfs: fs on '.' does not support file handles, falling back to index=off. overlayfs: at least 2 lowerdir are needed while upperdir nonexistent overlayfs: missing 'lowerdir' overlayfs: 'file0' not a directory hfs: gid requires an argument overlayfs: filesystem on './bus' not supported as upperdir hfs: unable to parse mount options overlayfs: failed to resolve 'f': -2 overlayfs: at least 2 lowerdir are needed while upperdir nonexistent overlayfs: missing 'lowerdir' overlayfs: failed to resolve './file0': -2 hfs: gid requires an argument overlayfs: filesystem on './bus' not supported as upperdir hfs: unable to parse mount options overlayfs: failed to resolve 'f': -2 overlayfs: './file0' not a directory overlayfs: missing 'lowerdir' netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'.