audit: type=1804 audit(1677909127.335:4): pid=10059 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir1602480291/syzkaller.rYrQ1M/21/bus" dev="sda1" ino=13979 res=1 ====================================================== WARNING: possible circular locking dependency detected 4.14.307-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.4/10043 is trying to acquire lock: ("%s-%s""btrfs", name){+.+.}, at: [] flush_workqueue+0xcb/0x1310 kernel/workqueue.c:2622 but task is already holding lock: (&fs_info->scrub_lock){+.+.}, at: [] btrfs_scrub_dev+0x506/0xcd0 fs/btrfs/scrub.c:4217 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #3 (&fs_info->scrub_lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 btrfs_scrub_dev+0x1f3/0xcd0 fs/btrfs/scrub.c:4150 XFS (loop1): unknown mount option [sync]. btrfs_ioctl_scrub fs/btrfs/ioctl.c:4451 [inline] btrfs_ioctl+0xba8/0x5b20 fs/btrfs/ioctl.c:5681 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 -> #2 (&fs_devs->device_list_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 __reada_start_machine fs/btrfs/reada.c:765 [inline] reada_start_machine_worker+0x1d2/0xa90 fs/btrfs/reada.c:746 normal_work_helper+0x304/0x1330 fs/btrfs/async-thread.c:376 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 -> #1 ((&work->normal_work)){+.+.}: process_one_work+0x736/0x14a0 kernel/workqueue.c:2093 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 -> #0 ("%s-%s""btrfs", name){+.+.}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 flush_workqueue+0xfa/0x1310 kernel/workqueue.c:2625 drain_workqueue+0x177/0x3e0 kernel/workqueue.c:2790 destroy_workqueue+0x71/0x710 kernel/workqueue.c:4116 __btrfs_destroy_workqueue fs/btrfs/async-thread.c:436 [inline] btrfs_destroy_workqueue+0xf8/0x630 fs/btrfs/async-thread.c:447 scrub_workers_put+0x90/0x1a0 fs/btrfs/scrub.c:4075 btrfs_scrub_dev+0x536/0xcd0 fs/btrfs/scrub.c:4219 btrfs_ioctl_scrub fs/btrfs/ioctl.c:4451 [inline] btrfs_ioctl+0xba8/0x5b20 fs/btrfs/ioctl.c:5681 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 other info that might help us debug this: Chain exists of: "%s-%s""btrfs", name --> &fs_devs->device_list_mutex --> &fs_info->scrub_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&fs_info->scrub_lock); lock(&fs_devs->device_list_mutex); lock(&fs_info->scrub_lock); lock("%s-%s""btrfs", name); *** DEADLOCK *** 1 lock held by syz-executor.4/10043: #0: (&fs_info->scrub_lock){+.+.}, at: [] btrfs_scrub_dev+0x506/0xcd0 fs/btrfs/scrub.c:4217 stack backtrace: CPU: 0 PID: 10043 Comm: syz-executor.4 Not tainted 4.14.307-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 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 flush_workqueue+0xfa/0x1310 kernel/workqueue.c:2625 drain_workqueue+0x177/0x3e0 kernel/workqueue.c:2790 destroy_workqueue+0x71/0x710 kernel/workqueue.c:4116 __btrfs_destroy_workqueue fs/btrfs/async-thread.c:436 [inline] btrfs_destroy_workqueue+0xf8/0x630 fs/btrfs/async-thread.c:447 scrub_workers_put+0x90/0x1a0 fs/btrfs/scrub.c:4075 btrfs_scrub_dev+0x536/0xcd0 fs/btrfs/scrub.c:4219 btrfs_ioctl_scrub fs/btrfs/ioctl.c:4451 [inline] btrfs_ioctl+0xba8/0x5b20 fs/btrfs/ioctl.c:5681 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f09fed880f9 RSP: 002b:00007f09fd2fa168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f09feea7f80 RCX: 00007f09fed880f9 RDX: 0000000020000100 RSI: 00000000c400941b RDI: 0000000000000004 RBP: 00007f09fede3ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc76b8379f R14: 00007f09fd2fa300 R15: 0000000000022000 sctp: [Deprecated]: syz-executor.2 (pid 10178) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead BTRFS info (device loop3): enabling inode map caching BTRFS info (device loop3): trying to use backup root at mount time BTRFS info (device loop3): use zlib compression BTRFS info (device loop3): enabling ssd optimizations BTRFS info (device loop3): using spread ssd allocation scheme BTRFS info (device loop3): using free space tree BTRFS info (device loop3): has skinny extents BTRFS info (device loop3): enabling inode map caching BTRFS info (device loop3): trying to use backup root at mount time BTRFS info (device loop3): use zlib compression BTRFS info (device loop3): enabling ssd optimizations BTRFS info (device loop3): using spread ssd allocation scheme BTRFS info (device loop3): using free space tree BTRFS info (device loop3): has skinny extents IPv6: ADDRCONF(NETDEV_CHANGE): gtp0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): gtp1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): gtp2: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): gtp3: link becomes ready BTRFS error (device loop2): unsupported checksum algorithm 1 BTRFS info (device loop4): enabling inode map caching BTRFS info (device loop4): trying to use backup root at mount time BTRFS error (device loop2): superblock checksum mismatch BTRFS info (device loop4): use zlib compression BTRFS info (device loop4): enabling ssd optimizations BTRFS info (device loop4): using spread ssd allocation scheme BTRFS error (device loop2): open_ctree failed BTRFS info (device loop4): using free space tree BTRFS error (device loop1): unsupported checksum algorithm 1 BTRFS error (device loop1): superblock checksum mismatch BTRFS info (device loop4): has skinny extents BTRFS error (device loop1): open_ctree failed BTRFS error (device loop2): unsupported checksum algorithm 1 BTRFS error (device loop2): superblock checksum mismatch BTRFS error (device loop2): open_ctree failed BTRFS error (device loop2): unsupported checksum algorithm 1 BTRFS error (device loop2): superblock checksum mismatch IPVS: ftp: loaded support on port[0] = 21 syz-executor.4 uses obsolete (PF_INET,SOCK_PACKET) BTRFS error (device loop2): open_ctree failed device syzkaller1 entered promiscuous mode BTRFS error (device loop2): unsupported checksum algorithm 1 BTRFS error (device loop2): superblock checksum mismatch IPVS: ftp: loaded support on port[0] = 21 BTRFS error (device loop2): open_ctree failed device syzkaller1 entered promiscuous mode BTRFS error (device loop3): unsupported checksum algorithm 1 BTRFS error (device loop3): superblock checksum mismatch device syzkaller1 entered promiscuous mode BTRFS error (device loop3): open_ctree failed BTRFS error (device loop2): unsupported checksum algorithm 1 BTRFS error (device loop2): superblock checksum mismatch BTRFS error (device loop2): open_ctree failed L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. device syzkaller1 entered promiscuous mode ALSA: mixer_oss: invalid OSS volume '' ALSA: mixer_oss: invalid OSS volume '('˷4Z"qbfG9' ALSA: mixer_oss: invalid OSS volume 'ʙ' ALSA: mixer_oss: invalid OSS volume '1zWa8$mF,{,[]-7' ALSA: mixer_oss: invalid OSS volume ':ԃXa reD,EL=' ALSA: mixer_oss: invalid OSS volume '' ALSA: mixer_oss: invalid OSS volume '850*[;4=$_w͢ҘZj' ALSA: mixer_oss: invalid OSS volume 'y)' ALSA: mixer_oss: invalid OSS volume '\хdBaEp ^ʼ'ЎDޠa' ALSA: mixer_oss: invalid OSS volume 'ǣ:$A؁G峄O~' ALSA: mixer_oss: invalid OSS volume 'ߙJD,i0h>4Zvm>SZ' ALSA: mixer_oss: invalid OSS volume ';80E-q_tY3+ӯD' ALSA: mixer_oss: invalid OSS volume '`jXsiM>k̨6-' ALSA: mixer_oss: invalid OSS volume 'hTښ~x&hvH '4' ALSA: mixer_oss: invalid OSS volume 'Ğ{T;?|o' ALSA: mixer_oss: invalid OSS volume '@>QLM I06=l>R)'' ALSA: mixer_oss: invalid OSS volume 'o4Wڷh`jeB^$77No' ALSA: mixer_oss: invalid OSS volume 'Go$x(:+Xw^*rTV' ALSA: mixer_oss: invalid OSS volume 'nnl)g4aa"许"kl' ALSA: mixer_oss: invalid OSS volume '' ALSA: mixer_oss: invalid OSS volume '('˷4Z"qbfG9' ALSA: mixer_oss: invalid OSS volume 'ʙ' ALSA: mixer_oss: invalid OSS volume '1zWa8$mF,{,[]-7' ALSA: mixer_oss: invalid OSS volume ':ԃXa reD,EL=' ALSA: mixer_oss: invalid OSS volume '' ALSA: mixer_oss: invalid OSS volume '850*[;4=$_w͢ҘZj' ALSA: mixer_oss: invalid OSS volume 'y)' ALSA: mixer_oss: invalid OSS volume '\хdBaEp ^ʼ'ЎDޠa' ALSA: mixer_oss: invalid OSS volume 'ǣ:$A؁G峄O~' ALSA: mixer_oss: invalid OSS volume 'ߙJD,i0h>4Zvm>SZ' ALSA: mixer_oss: invalid OSS volume ';80E-q_tY3+ӯD' ALSA: mixer_oss: invalid OSS volume '`jXsiM>k̨6-' ALSA: mixer_oss: invalid OSS volume 'hTښ~x&hvH '4' ALSA: mixer_oss: invalid OSS volume 'Ğ{T;?|o' ALSA: mixer_oss: invalid OSS volume '@>QLM I06=l>R)'' ALSA: mixer_oss: invalid OSS volume 'o4Wڷh`jeB^$77No' ALSA: mixer_oss: invalid OSS volume 'Go$x(:+Xw^*rTV' ALSA: mixer_oss: invalid OSS volume 'nnl)g4aa"许"kl' netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. ALSA: mixer_oss: invalid OSS volume '' ALSA: mixer_oss: invalid OSS volume '('˷4Z"qbfG9' ALSA: mixer_oss: invalid OSS volume 'ʙ' ALSA: mixer_oss: invalid OSS volume '1zWa8$mF,{,[]-7' netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. ALSA: mixer_oss: invalid OSS volume ':ԃXa reD,EL=' ALSA: mixer_oss: invalid OSS volume '' ALSA: mixer_oss: invalid OSS volume '850*[;4=$_w͢ҘZj' ALSA: mixer_oss: invalid OSS volume 'y)' ALSA: mixer_oss: invalid OSS volume '\хdBaEp ^ʼ'ЎDޠa' netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. ALSA: mixer_oss: invalid OSS volume 'ǣ:$A؁G峄O~' ALSA: mixer_oss: invalid OSS volume 'ߙJD,i0h>4Zvm>SZ' ALSA: mixer_oss: invalid OSS volume ';80E-q_tY3+ӯD' ALSA: mixer_oss: invalid OSS volume '`jXsiM>k̨6-' ALSA: mixer_oss: invalid OSS volume 'hTښ~x&hvH '4' ALSA: mixer_oss: invalid OSS volume 'Ğ{T;?|o' ALSA: mixer_oss: invalid OSS volume '@>QLM I06=l>R)'' ALSA: mixer_oss: invalid OSS volume 'o4Wڷh`jeB^$77No' ALSA: mixer_oss: invalid OSS volume 'Go$x(:+Xw^*rTV' ALSA: mixer_oss: invalid OSS volume 'nnl)g4aa"许"kl' ALSA: mixer_oss: invalid OSS volume '' netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'. ALSA: mixer_oss: invalid OSS volume '('˷4Z"qbfG9' ALSA: mixer_oss: invalid OSS volume 'ʙ' ALSA: mixer_oss: invalid OSS volume '1zWa8$mF,{,[]-7' ALSA: mixer_oss: invalid OSS volume ':ԃXa reD,EL=' ALSA: mixer_oss: invalid OSS volume '' ALSA: mixer_oss: invalid OSS volume '850*[;4=$_w͢ҘZj' ALSA: mixer_oss: invalid OSS volume 'y)' ALSA: mixer_oss: invalid OSS volume '\хdBaEp ^ʼ'ЎDޠa' ALSA: mixer_oss: invalid OSS volume 'ǣ:$A؁G峄O~' ALSA: mixer_oss: invalid OSS volume 'ߙJD,i0h>4Zvm>SZ' ALSA: mixer_oss: invalid OSS volume ';80E-q_tY3+ӯD' ALSA: mixer_oss: invalid OSS volume '`jXsiM>k̨6-' ALSA: mixer_oss: invalid OSS volume 'hTښ~x&hvH '4' ALSA: mixer_oss: invalid OSS volume 'Ğ{T;?|o' ALSA: mixer_oss: invalid OSS volume '@>QLM I06=l>R)'' ALSA: mixer_oss: invalid OSS volume 'o4Wڷh`jeB^$77No' ALSA: mixer_oss: invalid OSS volume 'Go$x(:+Xw^*rTV' ALSA: mixer_oss: invalid OSS volume 'nnl)g4aa"许"kl' syz-executor.5 calls setitimer() with new_value NULL pointer. Misfeature support will be removed XFS (loop1): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop1): Attempted to mount read-only compatible filesystem read-write. XFS (loop1): Filesystem can only be safely mounted read only. XFS (loop1): SB validate failed with error -22. audit: type=1800 audit(1677909134.055:5): pid=10873 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="sda1" ino=14038 res=0 overlayfs: fs on './file0' does not support file handles, falling back to index=off. F2FS-fs (loop3): Found nat_bits in checkpoint F2FS-fs (loop3): Mounted with checkpoint version = 48b305e5 XFS (loop1): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop1): Attempted to mount read-only compatible filesystem read-write. XFS (loop1): Filesystem can only be safely mounted read only. XFS (loop1): SB validate failed with error -22. attempt to access beyond end of device loop3: rw=2049, want=45104, limit=40427 audit: type=1800 audit(1677909134.945:6): pid=10908 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor.1" name="bus" dev="sda1" ino=14014 res=0 ntfs: (device loop1): parse_options(): Invalid mft_zone_multiplier. Using default value, i.e. 1. ntfs: volume version 3.1. ntfs: (device loop1): parse_options(): Invalid mft_zone_multiplier. Using default value, i.e. 1. ntfs: volume version 3.1. F2FS-fs (loop3): Found nat_bits in checkpoint F2FS-fs (loop3): Mounted with checkpoint version = 48b305e5 XFS (loop2): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop2): Attempted to mount read-only compatible filesystem read-write. XFS (loop2): Filesystem can only be safely mounted read only. XFS (loop2): SB validate failed with error -22. XFS (loop5): Mounting V4 Filesystem XFS (loop5): totally zeroed log XFS (loop5): Ending clean mount audit: type=1804 audit(1677909135.605:7): pid=11016 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir1602480291/syzkaller.rYrQ1M/54/bus" dev="sda1" ino=14064 res=1 ntfs: (device loop1): parse_options(): Invalid mft_zone_multiplier. Using default value, i.e. 1. ntfs: volume version 3.1. audit: type=1804 audit(1677909135.705:8): pid=11101 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.0" name="/root/syzkaller-testdir1453392333/syzkaller.Lte2hx/47/cgroup.controllers" dev="sda1" ino=14077 res=1 UDF-fs: warning (device loop4): udf_load_vrs: No VRS found attempt to access beyond end of device loop3: rw=2049, want=45104, limit=40427 UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed attempt to access beyond end of device loop5: rw=399361, want=65599, limit=65536 XFS (loop5): metadata I/O error: block 0xffff ("xlog_iodone") error 5 numblks 64 XFS (loop5): xfs_do_force_shutdown(0x2) called from line 1244 of file fs/xfs/xfs_log.c. Return address = 0xffffffff825f6d1b UDF-fs: warning (device loop4): udf_load_vrs: No VRS found XFS (loop5): Log I/O Error Detected. Shutting down filesystem XFS (loop5): Please umount the filesystem and rectify the problem(s) UDF-fs: Scanning with blocksize 2048 failed syz-executor.5 (11100) used greatest stack depth: 23872 bytes left UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) XFS (loop5): Unmounting Filesystem ntfs: (device loop1): parse_options(): Invalid mft_zone_multiplier. Using default value, i.e. 1. UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found ntfs: volume version 3.1. UDF-fs: Scanning with blocksize 1024 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 2048 failed UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) F2FS-fs (loop3): Found nat_bits in checkpoint XFS (loop2): Superblock has unknown read-only compatible features (0x8) enabled. XFS (loop2): Attempted to mount read-only compatible filesystem read-write. XFS (loop2): Filesystem can only be safely mounted read only. F2FS-fs (loop3): Mounted with checkpoint version = 48b305e5 XFS (loop2): SB validate failed with error -22. UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed attempt to access beyond end of device UDF-fs: warning (device loop4): udf_load_vrs: No VRS found audit: type=1804 audit(1677909136.615:9): pid=11128 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.2" name="/root/syzkaller-testdir1602480291/syzkaller.rYrQ1M/55/bus" dev="sda1" ino=14094 res=1 UDF-fs: Scanning with blocksize 1024 failed loop3: rw=2049, want=45104, limit=40427 XFS (loop5): Mounting V4 Filesystem UDF-fs: warning (device loop4): udf_load_vrs: No VRS found XFS (loop5): totally zeroed log XFS (loop5): Ending clean mount UDF-fs: Scanning with blocksize 2048 failed UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 512 failed UDF-fs: warning (device loop4): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 1024 failed XFS (loop0): Mounting V4 Filesystem UDF-fs: warning (device loop4): udf_load_vrs: No VRS found XFS (loop0): totally zeroed log UDF-fs: Scanning with blocksize 2048 failed XFS (loop0): Ending clean mount attempt to access beyond end of device loop5: rw=399361, want=65599, limit=65536 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) XFS (loop5): metadata I/O error: block 0xffff ("xlog_iodone") error 5 numblks 64 XFS (loop5): xfs_do_force_shutdown(0x2) called from line 1244 of file fs/xfs/xfs_log.c. Return address = 0xffffffff825f6d1b XFS (loop5): Log I/O Error Detected. Shutting down filesystem XFS (loop5): Please umount the filesystem and rectify the problem(s) XFS (loop1): Mounting V4 Filesystem XFS (loop1): totally zeroed log F2FS-fs (loop3): Found nat_bits in checkpoint XFS (loop1): Ending clean mount XFS (loop5): Unmounting Filesystem F2FS-fs (loop3): Mounted with checkpoint version = 48b305e5 attempt to access beyond end of device loop0: rw=399361, want=65599, limit=65536