================================================================================
UBSAN: Undefined behaviour in drivers/staging/erofs/super.c:122:3
shift exponent 55 is too large for 32-bit type 'int'
CPU: 1 PID: 19765 Comm: syz-executor.2 Not tainted 4.19.147-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+0x22c/0x33e lib/dump_stack.c:118
 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
 __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422
 superblock_read drivers/staging/erofs/super.c:122 [inline]
 erofs_read_super drivers/staging/erofs/super.c:356 [inline]
 erofs_fill_super+0x397/0x12fc drivers/staging/erofs/super.c:499
 mount_bdev+0x2fc/0x3b0 fs/super.c:1158
 erofs_mount+0x8c/0xc0 drivers/staging/erofs/super.c:512
 mount_fs+0xa3/0x318 fs/super.c:1261
 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x51c/0x2f10 fs/namespace.c:2799
 ksys_mount+0xcf/0x130 fs/namespace.c:3015
 __do_sys_mount fs/namespace.c:3029 [inline]
 __se_sys_mount fs/namespace.c:3026 [inline]
 __x64_sys_mount+0xba/0x150 fs/namespace.c:3026
 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x460bca
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 dd 87 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 ba 87 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007fadc37e8a88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fadc37e8b20 RCX: 0000000000460bca
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fadc37e8ae0
RBP: 00007fadc37e8ae0 R08: 00007fadc37e8b20 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020000140
================================================================================
erofs: blksize 8388608 isn't supported on this platform
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
 loop5: p2 < >
erofs: read_super, device -> /dev/loop4
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
EXT4-fs (loop3): Unrecognized mount option "dM�A�]���$�����D��pnP ����7v\{a.�=�s�" or missing value
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
erofs: options -> 
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=2016, location=2016
erofs: blksize 1 isn't supported on this platform
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
erofs: blksize 8388608 isn't supported on this platform
UDF-fs: Scanning with blocksize 512 failed
erofs: read_super, device -> /dev/loop4
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
EXT4-fs (loop3): Unrecognized mount option "dM�A�]���$�����D��pnP ����7v\{a.�=�s�" or missing value
 loop5: p2 < >
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
erofs: read_super, device -> /dev/loop2
erofs: read_super, device -> /dev/loop4
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
erofs: blksize 2147483648 isn't supported on this platform
UDF-fs: Scanning with blocksize 2048 failed
UDF-fs: warning (device loop1): udf_load_vrs: No VRS found
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=528 sclass=netlink_route_socket pid=19836 comm=syz-executor.5
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
UDF-fs: Scanning with blocksize 4096 failed
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=528 sclass=netlink_route_socket pid=19847 comm=syz-executor.5
VFS: Can't find a Minix filesystem V1 | V2 | V3 on device loop3.
erofs: blksize 2147483648 isn't supported on this platform
erofs: read_super, device -> /dev/loop4
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=2016, location=2016
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
UDF-fs: Scanning with blocksize 512 failed
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
erofs: read_super, device -> /dev/loop2
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
VFS: Can't find a Minix filesystem V1 | V2 | V3 on device loop3.
erofs: blksize 2147483648 isn't supported on this platform
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
erofs: read_super, device -> /dev/loop4
UDF-fs: Scanning with blocksize 2048 failed
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
UDF-fs: warning (device loop1): udf_load_vrs: No VRS found
erofs: blksize 2147483648 isn't supported on this platform
erofs: options -> 
UDF-fs: Scanning with blocksize 4096 failed
erofs: blksize 1 isn't supported on this platform
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
erofs: blksize 1073741824 isn't supported on this platform
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
netlink: 28 bytes leftover after parsing attributes in process `syz-executor.3'.
erofs: read_super, device -> /dev/loop4
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=2016, location=2016
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
erofs: blksize 1073741824 isn't supported on this platform
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
UDF-fs: Scanning with blocksize 512 failed
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
netlink: 28 bytes leftover after parsing attributes in process `syz-executor.3'.
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
 loop5: p2 < >
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
erofs: FAULT_INJECTION was not selected
UDF-fs: Scanning with blocksize 2048 failed
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
UDF-fs: warning (device loop1): udf_load_vrs: No VRS found
erofs: read_super, device -> /dev/loop2
UDF-fs: Scanning with blocksize 4096 failed
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
erofs: FAULT_INJECTION was not selected
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
erofs: read_super, device -> /dev/loop4
 loop5: p2 < >
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
 loop5: p2 < >
erofs: read_super, device -> /dev/loop4
erofs: options -> 
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
erofs: blksize 1 isn't supported on this platform
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=2016, location=2016
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
UDF-fs: Scanning with blocksize 512 failed
erofs: read_super, device -> /dev/loop2
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
erofs: FAULT_INJECTION was not selected
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
 loop5: p2 < >
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
erofs: FAULT_INJECTION was not selected
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
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
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=2016, location=2016
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
UDF-fs: Scanning with blocksize 512 failed
erofs: read_super, device -> /dev/loop4
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
erofs: options -> 
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
erofs: read_super, device -> /dev/loop2
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
erofs: blksize 1 isn't supported on this platform
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
erofs: FAULT_INJECTION was not selected
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
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
erofs: FAULT_INJECTION was not selected
erofs: read_super, device -> /dev/loop4
erofs: options -> 
UDF-fs: warning (device loop1): udf_fill_super: No partition found (2)
erofs: blksize 1 isn't supported on this platform
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
erofs: read_super, device -> /dev/loop4
erofs: read_super, device -> /dev/loop2
 loop5: p2 < >
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=2016, location=2016
erofs: options -> 
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
erofs: blksize 1 isn't supported on this platform
erofs: FAULT_INJECTION was not selected
NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024)
UDF-fs: Scanning with blocksize 512 failed
NILFS (loop3): unrecognized mount option "snapshot=0x0000000000000000"
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
erofs: read_super, device -> /dev/loop2
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
NILFS (loop3): broken superblock, retrying with spare superblock (blocksize = 1024)
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
NILFS (loop3): unrecognized mount option "snapshot=0x0000000000000000"
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
erofs: FAULT_INJECTION was not selected
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
 loop5: p2 < >
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
erofs: read_super, device -> /dev/loop4
erofs: options -> 
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
erofs: blksize 1 isn't supported on this platform
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=2016, location=2016
erofs: FAULT_INJECTION was not selected
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
UDF-fs: Scanning with blocksize 512 failed
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
erofs: FAULT_INJECTION was not selected
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 2048 failed
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
UDF-fs: warning (device loop1): udf_load_vrs: No VRS found
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
UDF-fs: Scanning with blocksize 4096 failed
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
 loop5: p2 < >
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
erofs: FAULT_INJECTION was not selected
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
erofs: read_super, device -> /dev/loop4
erofs: options -> 
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
erofs: blksize 1 isn't supported on this platform
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=2016, location=2016
 loop5: p2 < >
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
erofs: read_super, device -> /dev/loop4
erofs: options -> 
UDF-fs: Scanning with blocksize 512 failed
erofs: blksize 1 isn't supported on this platform
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
erofs: read_super, device -> /dev/loop2
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
erofs: FAULT_INJECTION was not selected
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
erofs: read_super, device -> /dev/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
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
erofs: FAULT_INJECTION was not selected
erofs: read_super, device -> /dev/loop4
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
audit: type=1804 audit(1601026316.074:62): pid=20300 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir171084405/syzkaller.qSnAdp/237/memory.events" dev="sda1" ino=16670 res=1
audit: type=1800 audit(1601026316.074:63): pid=20300 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.5" name="memory.events" dev="sda1" ino=16670 res=0
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
audit: type=1800 audit(1601026316.134:64): pid=20295 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.5" name="memory.events" dev="sda1" ino=16670 res=0
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=2016, location=2016
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
 loop5: p2 < >
erofs: FAULT_INJECTION was not selected
UDF-fs: Scanning with blocksize 512 failed
erofs: read_super, device -> /dev/loop4
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
ldm_parse_privhead(): Cannot find PRIVHEAD structure. LDM database is corrupt. Aborting.
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
ldm_validate_privheads(): Cannot find PRIVHEAD 1.
erofs: FAULT_INJECTION was not selected
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
 loop5: p2 < >
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
erofs: read_super, device -> /dev/loop4
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
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
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
erofs: FAULT_INJECTION was not selected
erofs: read_super, device -> /dev/loop4
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=2016, location=2016
erofs: FAULT_INJECTION was not selected
UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
UDF-fs: Scanning with blocksize 512 failed
erofs: read_super, device -> /dev/loop4
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
erofs: options -> 
erofs: blksize 1 isn't supported on this platform
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 1024 failed
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=256, location=256
UDF-fs: error (device loop1): udf_read_tagged: read failed, block=512, location=512
erofs: read_super, device -> /dev/loop2
erofs: options -> fault_injection=0x0000000000000000,user_xattr,nouser_xattr,fault_injection=0x0000000080000000,
UDF-fs: warning (device loop1): udf_load_vrs: No anchor found
UDF-fs: Scanning with blocksize 2048 failed
erofs: FAULT_INJECTION was not selected
UDF-fs: warning (device loop1): udf_load_vrs: No VRS found
UDF-fs: Scanning with blocksize 4096 failed