UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed ====================================================== WARNING: possible circular locking dependency detected 4.19.211-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.4/15021 is trying to acquire lock: 00000000d68140a0 (&sig->cred_guard_mutex){+.+.}, at: lock_trace fs/proc/base.c:402 [inline] 00000000d68140a0 (&sig->cred_guard_mutex){+.+.}, at: proc_pid_personality+0x4a/0x170 fs/proc/base.c:2938 but task is already holding lock: 0000000031b19642 (&p->lock){+.+.}, at: seq_read+0x6b/0x11c0 fs/seq_file.c:164 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&p->lock){+.+.}: seq_read+0x6b/0x11c0 fs/seq_file.c:164 proc_reg_read+0x1bd/0x2d0 fs/proc/inode.c:231 do_loop_readv_writev fs/read_write.c:701 [inline] do_loop_readv_writev fs/read_write.c:688 [inline] do_iter_read+0x471/0x630 fs/read_write.c:925 vfs_readv+0xe5/0x150 fs/read_write.c:987 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x457/0xa00 fs/splice.c:417 do_splice_to+0x10e/0x160 fs/splice.c:881 splice_direct_to_actor+0x2b9/0x8d0 fs/splice.c:959 do_splice_direct+0x1a7/0x270 fs/splice.c:1068 UDF-fs: warning (device loop1): udf_load_vrs: No anchor found do_sendfile+0x550/0xc30 fs/read_write.c:1447 __do_sys_sendfile64 fs/read_write.c:1508 [inline] __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe UDF-fs: Scanning with blocksize 2048 failed -> #3 (sb_writers#3){.+.+}: sb_start_write include/linux/fs.h:1579 [inline] mnt_want_write+0x3a/0xb0 fs/namespace.c:360 ovl_create_object+0x96/0x290 fs/overlayfs/dir.c:602 lookup_open+0x893/0x1a20 fs/namei.c:3235 do_last fs/namei.c:3327 [inline] path_openat+0x1094/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #2 (&ovl_i_mutex_dir_key[depth]){++++}: inode_lock_shared include/linux/fs.h:758 [inline] lookup_slow fs/namei.c:1688 [inline] lookup_one_len_unlocked+0x111/0x140 fs/namei.c:2573 ovl_lookup_single+0x60/0x920 fs/overlayfs/namei.c:206 ovl_lookup_layer+0x3bd/0x440 fs/overlayfs/namei.c:292 ovl_lookup+0x729/0x1a00 fs/overlayfs/namei.c:903 __lookup_slow+0x246/0x4a0 fs/namei.c:1672 lookup_slow fs/namei.c:1689 [inline] walk_component+0x7ac/0xda0 fs/namei.c:1811 lookup_last fs/namei.c:2274 [inline] path_lookupat+0x1ff/0x8d0 fs/namei.c:2319 filename_lookup+0x1ac/0x5a0 fs/namei.c:2349 user_path_at include/linux/namei.h:57 [inline] ksys_chdir+0x84/0x1d0 fs/open.c:458 __do_sys_chdir fs/open.c:480 [inline] __se_sys_chdir fs/open.c:478 [inline] __x64_sys_chdir+0x2d/0x40 fs/open.c:478 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #1 (&ovl_i_mutex_dir_key[depth]#3){++++}: inode_lock_shared include/linux/fs.h:758 [inline] do_last fs/namei.c:3326 [inline] path_openat+0x17ec/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_open_execat+0x11d/0x5b0 fs/exec.c:853 __do_execve_file+0x1a8b/0x2360 fs/exec.c:1770 do_execveat_common fs/exec.c:1879 [inline] do_execve+0x35/0x50 fs/exec.c:1896 __do_sys_execve fs/exec.c:1977 [inline] __se_sys_execve fs/exec.c:1972 [inline] __x64_sys_execve+0x7c/0xa0 fs/exec.c:1972 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&sig->cred_guard_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 lock_trace fs/proc/base.c:402 [inline] proc_pid_personality+0x4a/0x170 fs/proc/base.c:2938 proc_single_show+0xeb/0x170 fs/proc/base.c:755 seq_read+0x4e0/0x11c0 fs/seq_file.c:232 do_loop_readv_writev fs/read_write.c:701 [inline] do_loop_readv_writev fs/read_write.c:688 [inline] do_iter_read+0x471/0x630 fs/read_write.c:925 vfs_readv+0xe5/0x150 fs/read_write.c:987 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x457/0xa00 fs/splice.c:417 do_splice_to+0x10e/0x160 fs/splice.c:881 splice_direct_to_actor+0x2b9/0x8d0 fs/splice.c:959 do_splice_direct+0x1a7/0x270 fs/splice.c:1068 do_sendfile+0x550/0xc30 fs/read_write.c:1447 __do_sys_sendfile64 fs/read_write.c:1508 [inline] __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Chain exists of: &sig->cred_guard_mutex --> sb_writers#3 --> &p->lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&p->lock); lock(sb_writers#3); lock(&p->lock); lock(&sig->cred_guard_mutex); *** DEADLOCK *** 2 locks held by syz-executor.4/15021: #0: 00000000c920927c (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2779 [inline] #0: 00000000c920927c (sb_writers#3){.+.+}, at: do_sendfile+0x97d/0xc30 fs/read_write.c:1446 #1: 0000000031b19642 (&p->lock){+.+.}, at: seq_read+0x6b/0x11c0 fs/seq_file.c:164 stack backtrace: CPU: 0 PID: 15021 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_circular_bug.constprop.0.cold+0x2d7/0x41e kernel/locking/lockdep.c:1222 check_prev_add kernel/locking/lockdep.c:1866 [inline] check_prevs_add kernel/locking/lockdep.c:1979 [inline] validate_chain kernel/locking/lockdep.c:2420 [inline] __lock_acquire+0x30c9/0x3ff0 kernel/locking/lockdep.c:3416 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908 __mutex_lock_common kernel/locking/mutex.c:937 [inline] __mutex_lock+0xd7/0x1190 kernel/locking/mutex.c:1078 lock_trace fs/proc/base.c:402 [inline] proc_pid_personality+0x4a/0x170 fs/proc/base.c:2938 proc_single_show+0xeb/0x170 fs/proc/base.c:755 seq_read+0x4e0/0x11c0 fs/seq_file.c:232 do_loop_readv_writev fs/read_write.c:701 [inline] do_loop_readv_writev fs/read_write.c:688 [inline] do_iter_read+0x471/0x630 fs/read_write.c:925 vfs_readv+0xe5/0x150 fs/read_write.c:987 kernel_readv fs/splice.c:362 [inline] default_file_splice_read+0x457/0xa00 fs/splice.c:417 do_splice_to+0x10e/0x160 fs/splice.c:881 splice_direct_to_actor+0x2b9/0x8d0 fs/splice.c:959 do_splice_direct+0x1a7/0x270 fs/splice.c:1068 do_sendfile+0x550/0xc30 fs/read_write.c:1447 __do_sys_sendfile64 fs/read_write.c:1508 [inline] __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f7cfd582049 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7cfbef7168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f7cfd694f60 RCX: 00007f7cfd582049 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 000000000000000a RBP: 00007f7cfd5dc08d R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000f6c4 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd2df35e2f R14: 00007f7cfbef7300 R15: 0000000000022000 UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed netlink: 'syz-executor.2': attribute type 1 has an invalid length. BTRFS: device fsid e76ed352-74d7-4461-bdaa-670e3acfe92b devid 1 transid 7 /dev/loop2 UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 IPVS: ftp: loaded support on port[0] = 21 BTRFS error (device loop2): unsupported checksum algorithm 3 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! BTRFS error (device loop2): superblock checksum mismatch UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! BTRFS error (device loop2): open_ctree failed UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed IPVS: ftp: loaded support on port[0] = 21 UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 BTRFS error (device loop2): unsupported checksum algorithm 3 BTRFS error (device loop2): superblock checksum mismatch UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! BTRFS error (device loop2): open_ctree failed IPVS: ftp: loaded support on port[0] = 21 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed BTRFS error (device loop2): unsupported checksum algorithm 3 IPVS: ftp: loaded support on port[0] = 21 BTRFS error (device loop2): superblock checksum mismatch UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed BTRFS error (device loop2): open_ctree failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop3): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop3): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop3): udf_process_sequence: Primary Volume Descriptor not found! IPVS: ftp: loaded support on port[0] = 21 UDF-fs: Scanning with blocksize 512 failed UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed BTRFS error (device loop4): unsupported checksum algorithm 3 UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found BTRFS error (device loop4): superblock checksum mismatch UDF-fs: Scanning with blocksize 2048 failed BTRFS error (device loop4): open_ctree failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found IPVS: ftp: loaded support on port[0] = 21 UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop3): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found VFS: could not find a valid V7 on loop2. UDF-fs: Scanning with blocksize 1024 failed NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed NILFS (loop2): mounting unchecked fs UDF-fs: warning (device loop1): udf_load_vrs: No VRS found usb usb9: usbfs: interface 0 claimed by hub while 'syz-executor.3' sets config #0 NILFS (loop2): recovery complete UDF-fs: Scanning with blocksize 4096 failed NILFS (loop2): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed VFS: could not find a valid V7 on loop2. UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed VFS: could not find a valid V7 on loop2. UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found VFS: could not find a valid V7 on loop2. UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed VFS: could not find a valid V7 on loop2. VFS: could not find a valid V7 on loop2. usb usb9: usbfs: interface 0 claimed by hub while 'syz-executor.3' sets config #0 VFS: could not find a valid V7 on loop2. VFS: could not find a valid V7 on loop2. VFS: could not find a valid V7 on loop2. VFS: could not find a valid V7 on loop2. VFS: could not find a valid V7 on loop2. UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! VFS: could not find a valid V7 on loop2. UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed FAT-fs (loop2): Unrecognized mount option "permit_directio" or missing value UDF-fs: warning (device loop1): udf_load_vrs: No anchor found VFS: could not find a valid V7 on loop2. UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed VFS: could not find a valid V7 on loop2. UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 VFS: could not find a valid V7 on loop2. UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found VFS: could not find a valid V7 on loop2. UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed VFS: could not find a valid V7 on loop2. usb usb9: usbfs: interface 0 claimed by hub while 'syz-executor.3' sets config #0 VFS: could not find a valid V7 on loop2. VFS: could not find a valid V7 on loop2. VFS: could not find a valid V7 on loop2. VFS: could not find a valid V7 on loop2. UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based firewall rule not found. Use the iptables CT target to attach helpers instead. UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2020/09/19 18:44 (1000) UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed UDF-fs: error (device loop1): udf_read_tagged: tag checksum failed, block 96: 0x44 != 0x45 UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop1): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop1): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed