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From: syzbot <syzbot+695726bc473f9c36a4b6@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org, linux-unionfs@vger.kernel.org,
	miklos@szeredi.hu, syzkaller-bugs@googlegroups.com
Subject: possible deadlock in ovl_write_iter
Date: Wed, 26 Sep 2018 13:44:04 -0700	[thread overview]
Message-ID: <00000000000074e10d0576cc48f1@google.com> (raw)

Hello,

syzbot found the following crash on:

HEAD commit:    a38523185b40 erge tag 'libnvdimm-fixes-4.19-rc6' of git://..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=178f63fa400000
kernel config:  https://syzkaller.appspot.com/x/.config?x=dfb440e26f0a6f6f
dashboard link: https://syzkaller.appspot.com/bug?extid=695726bc473f9c36a4b6
compiler:       gcc (GCC) 8.0.1 20180413 (experimental)

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+695726bc473f9c36a4b6@syzkaller.appspotmail.com

Process accounting resumed

======================================================
WARNING: possible circular locking dependency detected
4.19.0-rc5+ #32 Not tainted
------------------------------------------------------
overlayfs: option "workdir=./file1\" is useless in a non-upper mount, ignore
syz-executor1/7265 is trying to acquire lock:
00000000fec87ddb (&ovl_i_mutex_key[depth]){+.+.}, at: inode_lock  
include/linux/fs.h:738 [inline]
00000000fec87ddb (&ovl_i_mutex_key[depth]){+.+.}, at:  
ovl_write_iter+0x151/0xb00 fs/overlayfs/file.c:231

but task is already holding lock:
00000000998db2f0 (&acct->lock#2){+.+.}, at: acct_get kernel/acct.c:161  
[inline]
00000000998db2f0 (&acct->lock#2){+.+.}, at: slow_acct_process  
kernel/acct.c:577 [inline]
00000000998db2f0 (&acct->lock#2){+.+.}, at: acct_process+0x48b/0x875  
kernel/acct.c:605

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&acct->lock#2){+.+.}:
overlayfs: at least 2 lowerdir are needed while upperdir nonexistent
        __mutex_lock_common kernel/locking/mutex.c:925 [inline]
        __mutex_lock+0x166/0x1700 kernel/locking/mutex.c:1072
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
        mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
        acct_pin_kill+0x26/0x100 kernel/acct.c:173
        pin_kill+0x29d/0xab0 fs/fs_pin.c:50
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
        acct_on+0x64a/0x8c0 kernel/acct.c:254
        __do_sys_acct kernel/acct.c:286 [inline]
        __se_sys_acct kernel/acct.c:273 [inline]
        __x64_sys_acct+0xc2/0x1f0 kernel/acct.c:273
        do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
        entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #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+0x214/0x370 fs/super.c:1387
        sb_start_write include/linux/fs.h:1566 [inline]
        mnt_want_write+0x3f/0xc0 fs/namespace.c:360
        ovl_want_write+0x76/0xa0 fs/overlayfs/util.c:24
        ovl_setattr+0x10b/0xaf0 fs/overlayfs/inode.c:30
        notify_change+0xbde/0x1110 fs/attr.c:334
        do_truncate+0x1bd/0x2d0 fs/open.c:63
        handle_truncate fs/namei.c:3008 [inline]
        do_last fs/namei.c:3424 [inline]
        path_openat+0x3762/0x5160 fs/namei.c:3534
        do_filp_open+0x255/0x380 fs/namei.c:3564
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
        do_sys_open+0x568/0x700 fs/open.c:1063
        ksys_open include/linux/syscalls.h:1276 [inline]
        __do_sys_creat fs/open.c:1121 [inline]
        __se_sys_creat fs/open.c:1119 [inline]
        __x64_sys_creat+0x61/0x80 fs/open.c:1119
        do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
        entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #0
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
  (&ovl_i_mutex_key[depth]){+.+.}:
        lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3900
        down_write+0x8a/0x130 kernel/locking/rwsem.c:70
        inode_lock include/linux/fs.h:738 [inline]
        ovl_write_iter+0x151/0xb00 fs/overlayfs/file.c:231
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
        call_write_iter include/linux/fs.h:1808 [inline]
        new_sync_write fs/read_write.c:474 [inline]
        __vfs_write+0x6b8/0x9f0 fs/read_write.c:487
        __kernel_write+0x10c/0x370 fs/read_write.c:506
        do_acct_process+0x1144/0x1660 kernel/acct.c:520
        slow_acct_process kernel/acct.c:579 [inline]
        acct_process+0x6b1/0x875 kernel/acct.c:605
        do_exit+0x1aaf/0x2610 kernel/exit.c:857
        do_group_exit+0x177/0x440 kernel/exit.c:970
        get_signal+0x8b0/0x1980 kernel/signal.c:2513
        do_signal+0x9c/0x21e0 arch/x86/kernel/signal.c:816
        exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162
        prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
        syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
        do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
        entry_SYSCALL_64_after_hwframe+0x49/0xbe

other info that might help us debug this:

Chain exists of:
   &ovl_i_mutex_key[depth] --> sb_writers#3 --> &acct->lock#2

  Possible unsafe locking scenario:

        CPU0                    CPU1
        ----                    ----
   lock(&acct->lock#2);
                                lock(sb_writers#3);
                                lock(&acct->lock#2);
   lock(&ovl_i_mutex_key[depth]);

  *** DEADLOCK ***

2 locks held by syz-executor1/7265:
  #0: 00000000998db2f0 (&acct->lock#2){+.+.}, at: acct_get kernel/acct.c:161  
[inline]
  #0: 00000000998db2f0 (&acct->lock#2){+.+.}, at: slow_acct_process  
kernel/acct.c:577 [inline]
  #0: 00000000998db2f0 (&acct->lock#2){+.+.}, at: acct_process+0x48b/0x875  
kernel/acct.c:605
  #1: 0000000018e8d67b (sb_writers#24){.+.+}, at: file_start_write_trylock  
include/linux/fs.h:2766 [inline]
  #1: 0000000018e8d67b (sb_writers#24){.+.+}, at:  
do_acct_process+0x1338/0x1660 kernel/acct.c:517

stack backtrace:
CPU: 0 PID: 7265 Comm: syz-executor1 Not tainted 4.19.0-rc5+ #32
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+0x1c4/0x2b4 lib/dump_stack.c:113
  print_circular_bug.isra.33.cold.54+0x1bd/0x27d  
kernel/locking/lockdep.c:1221
  check_prev_add kernel/locking/lockdep.c:1861 [inline]
  check_prevs_add kernel/locking/lockdep.c:1974 [inline]
  validate_chain kernel/locking/lockdep.c:2415 [inline]
  __lock_acquire+0x33e4/0x4ec0 kernel/locking/lockdep.c:3411
  lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3900
  down_write+0x8a/0x130 kernel/locking/rwsem.c:70
  inode_lock include/linux/fs.h:738 [inline]
  ovl_write_iter+0x151/0xb00 fs/overlayfs/file.c:231
  call_write_iter include/linux/fs.h:1808 [inline]
  new_sync_write fs/read_write.c:474 [inline]
  __vfs_write+0x6b8/0x9f0 fs/read_write.c:487
  __kernel_write+0x10c/0x370 fs/read_write.c:506
  do_acct_process+0x1144/0x1660 kernel/acct.c:520
  slow_acct_process kernel/acct.c:579 [inline]
  acct_process+0x6b1/0x875 kernel/acct.c:605
  do_exit+0x1aaf/0x2610 kernel/exit.c:857
  do_group_exit+0x177/0x440 kernel/exit.c:970
  get_signal+0x8b0/0x1980 kernel/signal.c:2513
  do_signal+0x9c/0x21e0 arch/x86/kernel/signal.c:816
  exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162
  prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
  syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
  do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
  entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457579
Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f0283ab7cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 000000000072c048 RCX: 0000000000457579
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000072c048
RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000072c04c
R13: 00007ffc372666df R14: 00007f0283ab89c0 R15: 0000000000000002
overlayfs: option "workdir=./file1\" is useless in a non-upper mount, ignore
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop5' (000000006e20afc0): kobject_uevent_env
kobject: 'loop5' (000000006e20afc0): fill_kobj_path: path  
= '/devices/virtual/block/loop5'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
overlayfs: at least 2 lowerdir are needed while upperdir nonexistent
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop2' (000000005bf75fe3): kobject_uevent_env
kobject: 'loop2' (000000005bf75fe3): fill_kobj_path: path  
= '/devices/virtual/block/loop2'
__ntfs_error: 23 callbacks suppressed
ntfs: (device loop1): parse_options(): Unrecognized mount option  
/dev/usbmon#.
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
ntfs: (device loop3): ntfs_fill_super(): Unable to determine device size.
overlayfs: filesystem on './file0' not supported as upperdir
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
overlayfs: filesystem on './file0' not supported as upperdir
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop2' (000000005bf75fe3): kobject_uevent_env
ntfs: (device loop1): is_boot_sector_ntfs(): Invalid boot sector checksum.
kobject: 'loop2' (000000005bf75fe3): fill_kobj_path: path  
= '/devices/virtual/block/loop2'
ntfs: (device loop1): read_ntfs_boot_sector(): Primary boot sector is  
invalid.
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
ntfs: (device loop1): read_ntfs_boot_sector(): Mount option errors=recover  
not used. Aborting without trying to recover.
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
ntfs: (device loop1): ntfs_fill_super(): Not an NTFS volume.
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
overlayfs: filesystem on './file0' not supported as upperdir
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop5' (000000006e20afc0): kobject_uevent_env
kobject: 'loop5' (000000006e20afc0): fill_kobj_path: path  
= '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
overlayfs: failed to resolve './file1': -2
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
ntfs: (device loop3): ntfs_fill_super(): Unable to determine device size.
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
overlayfs: failed to resolve './file1': -2
ntfs: (device loop1): ntfs_fill_super(): Unable to determine device size.
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop2' (000000005bf75fe3): kobject_uevent_env
kobject: 'loop2' (000000005bf75fe3): fill_kobj_path: path  
= '/devices/virtual/block/loop2'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
ntfs: (device loop1): ntfs_fill_super(): Unable to determine device size.
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop5' (000000006e20afc0): kobject_uevent_env
kobject: 'loop5' (000000006e20afc0): fill_kobj_path: path  
= '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
overlayfs: failed to resolve './file1': -2
ntfs: (device loop1): ntfs_fill_super(): Unable to determine device size.
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
overlayfs: filesystem on './file0' not supported as upperdir
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop2' (000000005bf75fe3): kobject_uevent_env
kobject: 'loop2' (000000005bf75fe3): fill_kobj_path: path  
= '/devices/virtual/block/loop2'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop5' (000000006e20afc0): kobject_uevent_env
kobject: 'loop5' (000000006e20afc0): fill_kobj_path: path  
= '/devices/virtual/block/loop5'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
overlayfs: failed to resolve './file1': -2
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop2' (000000005bf75fe3): kobject_uevent_env
kobject: 'loop2' (000000005bf75fe3): fill_kobj_path: path  
= '/devices/virtual/block/loop2'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop2' (000000005bf75fe3): kobject_uevent_env
kobject: 'loop2' (000000005bf75fe3): fill_kobj_path: path  
= '/devices/virtual/block/loop2'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop5' (000000006e20afc0): kobject_uevent_env
kobject: 'loop5' (000000006e20afc0): fill_kobj_path: path  
= '/devices/virtual/block/loop5'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
overlayfs: unrecognized mount option "seclabel" or missing value
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
overlayfs: failed to resolve './file1': -2
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
overlayfs: unrecognized mount option "seclabel" or missing value
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
overlayfs: failed to resolve './file1': -2
__ntfs_error: 4 callbacks suppressed
ntfs: (device loop1): ntfs_fill_super(): Unable to determine device size.
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
ntfs: (device loop0): parse_options(): Unrecognized mount option \x01\x04.
kobject: 'loop2' (000000005bf75fe3): kobject_uevent_env
kobject: 'loop2' (000000005bf75fe3): fill_kobj_path: path  
= '/devices/virtual/block/loop2'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop5' (000000006e20afc0): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop5' (000000006e20afc0): fill_kobj_path: path  
= '/devices/virtual/block/loop5'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
ntfs: (device loop1): ntfs_fill_super(): Unable to determine device size.
ntfs: (device loop3): ntfs_fill_super(): Unable to determine device size.
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
ntfs: (device loop0): parse_options(): Unrecognized mount option \x01\x04.
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop2' (000000005bf75fe3): kobject_uevent_env
kobject: 'loop2' (000000005bf75fe3): fill_kobj_path: path  
= '/devices/virtual/block/loop2'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
ntfs: (device loop0): parse_options(): Unrecognized mount option \x01\x04.
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
overlayfs: failed to resolve './file1': -2
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
ntfs: (device loop1): ntfs_fill_super(): Unable to determine device size.
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
ntfs: (device loop3): parse_options(): Unrecognized mount option /dev/dsp.
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop2' (000000005bf75fe3): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop2' (000000005bf75fe3): fill_kobj_path: path  
= '/devices/virtual/block/loop2'
ntfs: (device loop3): parse_options(): Unrecognized mount option /dev/dsp.
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop5' (000000006e20afc0): kobject_uevent_env
ntfs: (device loop3): ntfs_fill_super(): Unable to determine device size.
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop5' (000000006e20afc0): fill_kobj_path: path  
= '/devices/virtual/block/loop5'
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
overlayfs: missing 'lowerdir'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
overlayfs: failed to resolve './file1': -2
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
overlayfs: missing 'lowerdir'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop2' (000000005bf75fe3): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop2' (000000005bf75fe3): fill_kobj_path: path  
= '/devices/virtual/block/loop2'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop2' (000000005bf75fe3): kobject_uevent_env
kobject: 'loop2' (000000005bf75fe3): fill_kobj_path: path  
= '/devices/virtual/block/loop2'
kobject: 'loop5' (000000006e20afc0): kobject_uevent_env
kobject: 'loop5' (000000006e20afc0): fill_kobj_path: path  
= '/devices/virtual/block/loop5'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
overlayfs: filesystem on './file0' not supported as upperdir
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'kvm' (00000000bb4f2ec2): kobject_uevent_env
kobject: 'kvm' (00000000bb4f2ec2): fill_kobj_path: path  
= '/devices/virtual/misc/kvm'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop2' (000000005bf75fe3): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop2' (000000005bf75fe3): fill_kobj_path: path  
= '/devices/virtual/block/loop2'
kobject: 'loop0' (0000000079b7ba90): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop0' (0000000079b7ba90): fill_kobj_path: path  
= '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop4' (0000000088f052bf): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop4' (0000000088f052bf): fill_kobj_path: path  
= '/devices/virtual/block/loop4'
kobject: 'loop1' (00000000e50e8695): kobject_uevent_env
kobject: 'loop1' (00000000e50e8695): fill_kobj_path: path  
= '/devices/virtual/block/loop1'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'
kobject: 'loop3' (0000000017983d9f): kobject_uevent_env
kobject: 'loop3' (0000000017983d9f): fill_kobj_path: path  
= '/devices/virtual/block/loop3'


---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.

syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with  
syzbot.

             reply	other threads:[~2018-09-26 20:44 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-26 20:44 syzbot [this message]
2018-09-27  3:48 ` possible deadlock in ovl_write_iter Amir Goldstein
2018-09-27  3:51   ` Amir Goldstein
2018-11-27  7:06 ` syzbot
2018-11-27  7:44   ` Amir Goldstein
2018-11-27 14:12     ` Dmitry Vyukov
2018-11-27 15:07   ` Amir Goldstein
2018-11-27 15:48     ` Dmitry Vyukov
2018-11-27 16:13       ` Amir Goldstein

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