WARNING: possible circular locking dependency detected 4.14.228-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.3/25706 is trying to acquire lock: (&sig->cred_guard_mutex){+.+.}, at: [] lock_trace fs/proc/base.c:407 [inline] (&sig->cred_guard_mutex){+.+.}, at: [] proc_pid_syscall+0xa7/0x2a0 fs/proc/base.c:639 but task is already holding lock: (&p->lock){+.+.}, at: [] seq_read+0xba/0x1120 fs/seq_file.c:165 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #4 (&p->lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 seq_read+0xba/0x1120 fs/seq_file.c:165 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 -> #3 (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_do_remove+0x67/0xb90 fs/overlayfs/dir.c:759 vfs_rmdir.part.0+0x144/0x390 fs/namei.c:3908 vfs_rmdir fs/namei.c:3893 [inline] do_rmdir+0x334/0x3c0 fs/namei.c:3968 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb -> #2 (&ovl_i_mutex_dir_key[depth]){++++}: down_read+0x36/0x80 kernel/locking/rwsem.c:24 inode_lock_shared include/linux/fs.h:729 [inline] lookup_slow+0x129/0x400 fs/namei.c:1674 lookup_one_len_unlocked+0x3a0/0x410 fs/namei.c:2595 ovl_lookup_single+0x33/0x6d0 fs/overlayfs/namei.c:208 ovl_lookup_layer+0x2ef/0x3d0 fs/overlayfs/namei.c:265 ovl_lookup+0x5d9/0x1120 fs/overlayfs/namei.c:670 lookup_slow+0x20a/0x400 fs/namei.c:1696 walk_component+0x6a1/0xbc0 fs/namei.c:1825 lookup_last fs/namei.c:2293 [inline] path_lookupat+0x1bb/0x780 fs/namei.c:2343 filename_lookup+0x18a/0x510 fs/namei.c:2377 user_path include/linux/namei.h:62 [inline] do_mount+0x118/0x2a00 fs/namespace.c:2819 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb -> #1 (&ovl_i_mutex_dir_key[depth]#2){++++}: 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 -> #0 (&sig->cred_guard_mutex){+.+.}: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 lock_trace fs/proc/base.c:407 [inline] proc_pid_syscall+0xa7/0x2a0 fs/proc/base.c:639 proc_single_show+0xe7/0x150 fs/proc/base.c:761 seq_read+0x4cf/0x1120 fs/seq_file.c:237 __vfs_read+0xe4/0x620 fs/read_write.c:411 vfs_read+0x139/0x340 fs/read_write.c:447 SYSC_read fs/read_write.c:574 [inline] SyS_read+0xf2/0x210 fs/read_write.c:567 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: &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.3/25706: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x1fb/0x2b0 fs/file.c:769 #1: (&p->lock){+.+.}, at: [] seq_read+0xba/0x1120 fs/seq_file.c:165 stack backtrace: CPU: 1 PID: 25706 Comm: syz-executor.3 Not tainted 4.14.228-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 __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893 lock_trace fs/proc/base.c:407 [inline] proc_pid_syscall+0xa7/0x2a0 fs/proc/base.c:639 proc_single_show+0xe7/0x150 fs/proc/base.c:761 seq_read+0x4cf/0x1120 fs/seq_file.c:237 __vfs_read+0xe4/0x620 fs/read_write.c:411 vfs_read+0x139/0x340 fs/read_write.c:447 SYSC_read fs/read_write.c:574 [inline] SyS_read+0xf2/0x210 fs/read_write.c:567 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x466459 RSP: 002b:00007fbdcb13c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffc5619242f R14: 00007fbdcb13c300 R15: 0000000000022000 NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" XFS (loop1): unknown mount option [euid>00000000000000000000]. NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" XFS (loop1): unknown mount option [euid>00000000000000000000]. NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" EXT4-fs (loop1): VFS: Can't find ext4 filesystem NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" EXT4-fs (loop1): VFS: Can't find ext4 filesystem NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" mkiss: ax1: crc mode is auto. NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue mkiss: ax2: crc mode is auto. NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop3): Can't find a valid FAT filesystem FAT-fs (loop3): bogus number of reserved sectors FAT-fs (loop3): Can't find a valid FAT filesystem NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" print_req_error: 41 callbacks suppressed print_req_error: I/O error, dev loop4, sector 0 buffer_io_error: 37 callbacks suppressed Buffer I/O error on dev loop4, logical block 0, async page read print_req_error: I/O error, dev loop4, sector 4 Buffer I/O error on dev loop4, logical block 2, async page read print_req_error: I/O error, dev loop4, sector 6 Buffer I/O error on dev loop4, logical block 3, async page read NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" print_req_error: I/O error, dev loop4, sector 0 Buffer I/O error on dev loop4, logical block 0, async page read print_req_error: I/O error, dev loop4, sector 4 Buffer I/O error on dev loop4, logical block 2, async page read print_req_error: I/O error, dev loop4, sector 6 Buffer I/O error on dev loop4, logical block 3, async page read print_req_error: I/O error, dev loop2, sector 0 Buffer I/O error on dev loop2, logical block 0, async page read print_req_error: I/O error, dev loop2, sector 4 Buffer I/O error on dev loop2, logical block 2, async page read print_req_error: I/O error, dev loop2, sector 6 Buffer I/O error on dev loop2, logical block 3, async page read NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" print_req_error: I/O error, dev loop4, sector 0 Buffer I/O error on dev loop4, logical block 0, async page read NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" overlayfs: upperdir is in-use by another mount, mount with '-o index=off' to override exclusive upperdir protection. NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" device hsr_slave_1 left promiscuous mode device hsr_slave_0 left promiscuous mode team0 (unregistering): Port device team_slave_1 removed NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" bond0 (unregistering): Releasing backup interface bond_slave_0 NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) bond0 (unregistering): Released all slaves NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" ieee80211 M: Selected rate control algorithm 'minstrel_ht' mkiss: ax3: crc mode is auto. mkiss: ax2: crc mode is auto. mkiss: ax1: crc mode is auto. ieee80211 M: hwaddr 02:00:00:00:04:00 registered ieee80211 phy5: Selected rate control algorithm 'minstrel_ht' ieee80211 phy5: hwaddr 02:00:00:00:05:00 registered IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready mkiss: ax1: crc mode is auto. mkiss: ax2: crc mode is auto. NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" netlink: 14 bytes leftover after parsing attributes in process `syz-executor.3'. NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" netlink: 4 bytes leftover after parsing attributes in process `syz-executor.3'. NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" EXT4-fs (loop3): Unrecognized mount option "fuse" or missing value print_req_error: 37 callbacks suppressed print_req_error: I/O error, dev loop2, sector 0 buffer_io_error: 36 callbacks suppressed Buffer I/O error on dev loop2, logical block 0, async page read print_req_error: I/O error, dev loop2, sector 4 Buffer I/O error on dev loop2, logical block 2, async page read print_req_error: I/O error, dev loop2, sector 6 Buffer I/O error on dev loop2, logical block 3, async page read EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop1): read_mmp_block:110: Error -117 while reading MMP block 0 EXT4-fs (loop1): warning: mounting unchecked fs, running e2fsck is recommended EXT4-fs warning (device loop1): read_mmp_block:110: Error -117 while reading MMP block 0 NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" print_req_error: I/O error, dev loop2, sector 0 Buffer I/O error on dev loop2, logical block 0, async page read print_req_error: I/O error, dev loop2, sector 4 Buffer I/O error on dev loop2, logical block 2, async page read print_req_error: I/O error, dev loop2, sector 6 Buffer I/O error on dev loop2, logical block 3, async page read EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop1): read_mmp_block:110: Error -117 while reading MMP block 0 NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop1): read_mmp_block:110: Error -117 while reading MMP block 0 NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop1): read_mmp_block:110: Error -117 while reading MMP block 0 device veth1_macvtap left promiscuous mode NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" print_req_error: I/O error, dev loop4, sector 0 Buffer I/O error on dev loop4, logical block 0, async page read print_req_error: I/O error, dev loop4, sector 4 Buffer I/O error on dev loop4, logical block 2, async page read print_req_error: I/O error, dev loop4, sector 6 Buffer I/O error on dev loop4, logical block 3, async page read EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop1): read_mmp_block:110: Error -117 while reading MMP block 0 NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" print_req_error: I/O error, dev loop2, sector 0 Buffer I/O error on dev loop2, logical block 0, async page read EXT4-fs (loop1): mounted filesystem without journal. Opts: ,errors=continue EXT4-fs warning (device loop1): read_mmp_block:110: Error -117 while reading MMP block 0 NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop2): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): unrecognized mount option "fsuuid=ba43d619-1a2d-490e-0658-" NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) NILFS (loop4): broken superblock, retrying with spare superblock (blocksize = 1024)