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possible deadlock in userfaultfd_read

Status: auto-closed as invalid on 2019/11/02 18:47
Reported-by: syzbot+5d6306ec057f3482ff50@syzkaller.appspotmail.com
First crash: 2008d, last: 1978d
▶ ▼ Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream possible deadlock in userfaultfd_read fs 239 2078d 2132d 11/28 fixed on 2019/03/28 12:00
upstream possible deadlock in userfaultfd_read (2) fs 228 1977d 2076d 12/28 fixed on 2019/07/29 13:39

Sample crash report:
=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
4.19.57 #30 Not tainted
-----------------------------------------------------
syz-executor.5/15554 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
000000006b984cfd (&ctx->fault_pending_wqh){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline]
000000006b984cfd (&ctx->fault_pending_wqh){+.+.}, at: userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline]
000000006b984cfd (&ctx->fault_pending_wqh){+.+.}, at: userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env

and this task is already holding:
0000000048aca712 (&ctx->fd_wqh){....}, at: spin_lock_irq include/linux/spinlock.h:354 [inline]
0000000048aca712 (&ctx->fd_wqh){....}, at: userfaultfd_ctx_read fs/userfaultfd.c:1042 [inline]
0000000048aca712 (&ctx->fd_wqh){....}, at: userfaultfd_read+0x262/0x18c0 fs/userfaultfd.c:1204
which would create a new lock dependency:
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
 (&ctx->fd_wqh){....} -> (&ctx->fault_pending_wqh){+.+.}

but this new dependency connects a SOFTIRQ-irq-safe lock:
 (&(&ctx->ctx_lock)->rlock){..-.}

... which became SOFTIRQ-irq-safe at:
  lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
  __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
  _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160
  spin_lock_irq include/linux/spinlock.h:354 [inline]
  free_ioctx_users+0x2d/0x490 fs/aio.c:614
  percpu_ref_put_many include/linux/percpu-refcount.h:284 [inline]
  percpu_ref_put include/linux/percpu-refcount.h:300 [inline]
  percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline]
  percpu_ref_switch_to_atomic_rcu+0x407/0x540 lib/percpu-refcount.c:158
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
  __rcu_reclaim kernel/rcu/rcu.h:236 [inline]
  rcu_do_batch kernel/rcu/tree.c:2584 [inline]
  invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline]
  __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline]
  rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881
  __do_softirq+0x25c/0x921 kernel/softirq.c:292
  invoke_softirq kernel/softirq.c:372 [inline]
  irq_exit+0x180/0x1d0 kernel/softirq.c:412
  exiting_irq arch/x86/include/asm/apic.h:536 [inline]
  smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1056
  apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:869
  rdtsc arch/x86/include/asm/msr.h:205 [inline]
  rdtsc_ordered arch/x86/include/asm/msr.h:232 [inline]
  delay_tsc+0x4c/0xc0 arch/x86/lib/delay.c:61
  __delay arch/x86/lib/delay.c:161 [inline]
  __const_udelay+0x59/0x80 arch/x86/lib/delay.c:175
  try_check_zero+0x201/0x330 kernel/rcu/srcutree.c:723
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
  srcu_advance_state kernel/rcu/srcutree.c:1157 [inline]
  process_srcu+0x329/0xec0 kernel/rcu/srcutree.c:1251
  process_one_work+0x989/0x1750 kernel/workqueue.c:2153
  worker_thread+0x98/0xe40 kernel/workqueue.c:2296
  kthread+0x354/0x420 kernel/kthread.c:246
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
  ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

to a SOFTIRQ-irq-unsafe lock:
 (&ctx->fault_pending_wqh){+.+.}

... which became SOFTIRQ-irq-unsafe at:
...
  lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
  __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
  _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
  spin_lock include/linux/spinlock.h:329 [inline]
  userfaultfd_release+0x4d6/0x720 fs/userfaultfd.c:922
  __fput+0x2dd/0x8b0 fs/file_table.c:278
  ____fput+0x16/0x20 fs/file_table.c:309
  task_work_run+0x145/0x1c0 kernel/task_work.c:113
  tracehook_notify_resume include/linux/tracehook.h:193 [inline]
  exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167
  prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
  syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
  do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296
  entry_SYSCALL_64_after_hwframe+0x49/0xbe

other info that might help us debug this:

kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
Chain exists of:
  &(&ctx->ctx_lock)->rlock --> &ctx->fd_wqh --> &ctx->fault_pending_wqh

kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
 Possible interrupt unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&ctx->fault_pending_wqh);
                               local_irq_disable();
                               lock(&(&ctx->ctx_lock)->rlock);
                               lock(&ctx->fd_wqh);
  <Interrupt>
    lock(&(&ctx->ctx_lock)->rlock);

 *** DEADLOCK ***

1 lock held by syz-executor.5/15554:
 #0: 0000000048aca712 (&ctx->fd_wqh){....}, at: spin_lock_irq include/linux/spinlock.h:354 [inline]
 #0: 0000000048aca712 (&ctx->fd_wqh){....}, at: userfaultfd_ctx_read fs/userfaultfd.c:1042 [inline]
 #0: 0000000048aca712 (&ctx->fd_wqh){....}, at: userfaultfd_read+0x262/0x18c0 fs/userfaultfd.c:1204

the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
 -> (&(&ctx->ctx_lock)->rlock){..-.} ops: 33 {
    IN-SOFTIRQ-W at:
                      lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
                      __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
                      _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160
                      spin_lock_irq include/linux/spinlock.h:354 [inline]
                      free_ioctx_users+0x2d/0x490 fs/aio.c:614
                      percpu_ref_put_many include/linux/percpu-refcount.h:284 [inline]
                      percpu_ref_put include/linux/percpu-refcount.h:300 [inline]
                      percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline]
                      percpu_ref_switch_to_atomic_rcu+0x407/0x540 lib/percpu-refcount.c:158
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
                      __rcu_reclaim kernel/rcu/rcu.h:236 [inline]
                      rcu_do_batch kernel/rcu/tree.c:2584 [inline]
                      invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline]
                      __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline]
                      rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881
                      __do_softirq+0x25c/0x921 kernel/softirq.c:292
                      invoke_softirq kernel/softirq.c:372 [inline]
                      irq_exit+0x180/0x1d0 kernel/softirq.c:412
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
                      exiting_irq arch/x86/include/asm/apic.h:536 [inline]
                      smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1056
                      apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:869
                      rdtsc arch/x86/include/asm/msr.h:205 [inline]
                      rdtsc_ordered arch/x86/include/asm/msr.h:232 [inline]
                      delay_tsc+0x4c/0xc0 arch/x86/lib/delay.c:61
                      __delay arch/x86/lib/delay.c:161 [inline]
                      __const_udelay+0x59/0x80 arch/x86/lib/delay.c:175
                      try_check_zero+0x201/0x330 kernel/rcu/srcutree.c:723
                      srcu_advance_state kernel/rcu/srcutree.c:1157 [inline]
                      process_srcu+0x329/0xec0 kernel/rcu/srcutree.c:1251
                      process_one_work+0x989/0x1750 kernel/workqueue.c:2153
                      worker_thread+0x98/0xe40 kernel/workqueue.c:2296
                      kthread+0x354/0x420 kernel/kthread.c:246
                      ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
    INITIAL USE at:
                     lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
                     __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
                     _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160
                     spin_lock_irq include/linux/spinlock.h:354 [inline]
                     free_ioctx_users+0x2d/0x490 fs/aio.c:614
                     percpu_ref_put_many include/linux/percpu-refcount.h:284 [inline]
                     percpu_ref_put include/linux/percpu-refcount.h:300 [inline]
                     percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline]
                     percpu_ref_switch_to_atomic_rcu+0x407/0x540 lib/percpu-refcount.c:158
                     __rcu_reclaim kernel/rcu/rcu.h:236 [inline]
                     rcu_do_batch kernel/rcu/tree.c:2584 [inline]
                     invoke_rcu_callbacks kernel/rcu/tree.c:2897 [inline]
                     __rcu_process_callbacks kernel/rcu/tree.c:2864 [inline]
                     rcu_process_callbacks+0xba0/0x1a30 kernel/rcu/tree.c:2881
                     __do_softirq+0x25c/0x921 kernel/softirq.c:292
                     invoke_softirq kernel/softirq.c:372 [inline]
                     irq_exit+0x180/0x1d0 kernel/softirq.c:412
                     exiting_irq arch/x86/include/asm/apic.h:536 [inline]
                     smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1056
                     apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:869
                     rdtsc arch/x86/include/asm/msr.h:205 [inline]
                     rdtsc_ordered arch/x86/include/asm/msr.h:232 [inline]
                     delay_tsc+0x4c/0xc0 arch/x86/lib/delay.c:61
                     __delay arch/x86/lib/delay.c:161 [inline]
                     __const_udelay+0x59/0x80 arch/x86/lib/delay.c:175
                     try_check_zero+0x201/0x330 kernel/rcu/srcutree.c:723
                     srcu_advance_state kernel/rcu/srcutree.c:1157 [inline]
                     process_srcu+0x329/0xec0 kernel/rcu/srcutree.c:1251
                     process_one_work+0x989/0x1750 kernel/workqueue.c:2153
                     worker_thread+0x98/0xe40 kernel/workqueue.c:2296
                     kthread+0x354/0x420 kernel/kthread.c:246
                     ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
  }
  ... key      at: [<ffffffff8a3873a0>] __key.50195+0x0/0x40
  ... acquired at:
   __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
   _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
   spin_lock include/linux/spinlock.h:329 [inline]
   aio_poll fs/aio.c:1741 [inline]
   __io_submit_one fs/aio.c:1849 [inline]
   io_submit_one+0xef2/0x2eb0 fs/aio.c:1885
   __do_sys_io_submit fs/aio.c:1929 [inline]
   __se_sys_io_submit fs/aio.c:1900 [inline]
   __x64_sys_io_submit+0x1aa/0x520 fs/aio.c:1900
   do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> (&ctx->fd_wqh){....} ops: 25 {
   INITIAL USE at:
                   lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
                   __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
                   _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152
                   __wake_up_common_lock+0xc7/0x190 kernel/sched/wait.c:120
                   __wake_up+0xe/0x10 kernel/sched/wait.c:145
                   userfaultfd_release+0x534/0x720 fs/userfaultfd.c:930
                   __fput+0x2dd/0x8b0 fs/file_table.c:278
                   ____fput+0x16/0x20 fs/file_table.c:309
                   task_work_run+0x145/0x1c0 kernel/task_work.c:113
                   tracehook_notify_resume include/linux/tracehook.h:193 [inline]
                   exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167
                   prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
                   syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
                   do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296
                   entry_SYSCALL_64_after_hwframe+0x49/0xbe
 }
 ... key      at: [<ffffffff8a387120>] __key.43732+0x0/0x40
 ... acquired at:
   lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
   __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
   _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
   spin_lock include/linux/spinlock.h:329 [inline]
   userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline]
   userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204
   __vfs_read+0x114/0x800 fs/read_write.c:416
   vfs_read+0x194/0x3d0 fs/read_write.c:452
   ksys_read+0x14f/0x2d0 fs/read_write.c:579
   __do_sys_read fs/read_write.c:589 [inline]
   __se_sys_read fs/read_write.c:587 [inline]
   __x64_sys_read+0x73/0xb0 fs/read_write.c:587
   do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
   entry_SYSCALL_64_after_hwframe+0x49/0xbe


the dependencies between the lock to be acquired
 and SOFTIRQ-irq-unsafe lock:
-> (&ctx->fault_pending_wqh){+.+.} ops: 14 {
   HARDIRQ-ON-W at:
                    lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
                    __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
                    _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
                    spin_lock include/linux/spinlock.h:329 [inline]
                    userfaultfd_release+0x4d6/0x720 fs/userfaultfd.c:922
                    __fput+0x2dd/0x8b0 fs/file_table.c:278
                    ____fput+0x16/0x20 fs/file_table.c:309
                    task_work_run+0x145/0x1c0 kernel/task_work.c:113
                    tracehook_notify_resume include/linux/tracehook.h:193 [inline]
                    exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167
                    prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
                    syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
                    do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296
                    entry_SYSCALL_64_after_hwframe+0x49/0xbe
   SOFTIRQ-ON-W at:
                    lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
                    __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
                    _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
                    spin_lock include/linux/spinlock.h:329 [inline]
                    userfaultfd_release+0x4d6/0x720 fs/userfaultfd.c:922
                    __fput+0x2dd/0x8b0 fs/file_table.c:278
                    ____fput+0x16/0x20 fs/file_table.c:309
                    task_work_run+0x145/0x1c0 kernel/task_work.c:113
                    tracehook_notify_resume include/linux/tracehook.h:193 [inline]
                    exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167
                    prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
                    syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
                    do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296
                    entry_SYSCALL_64_after_hwframe+0x49/0xbe
   INITIAL USE at:
                   lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
                   __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
                   _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
                   spin_lock include/linux/spinlock.h:329 [inline]
                   userfaultfd_release+0x4d6/0x720 fs/userfaultfd.c:922
                   __fput+0x2dd/0x8b0 fs/file_table.c:278
                   ____fput+0x16/0x20 fs/file_table.c:309
                   task_work_run+0x145/0x1c0 kernel/task_work.c:113
                   tracehook_notify_resume include/linux/tracehook.h:193 [inline]
                   exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167
                   prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
                   syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
                   do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296
                   entry_SYSCALL_64_after_hwframe+0x49/0xbe
 }
 ... key      at: [<ffffffff8a3871e0>] __key.43729+0x0/0x40
 ... acquired at:
   lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
   __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
   _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
   spin_lock include/linux/spinlock.h:329 [inline]
   userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline]
   userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204
   __vfs_read+0x114/0x800 fs/read_write.c:416
   vfs_read+0x194/0x3d0 fs/read_write.c:452
   ksys_read+0x14f/0x2d0 fs/read_write.c:579
   __do_sys_read fs/read_write.c:589 [inline]
   __se_sys_read fs/read_write.c:587 [inline]
   __x64_sys_read+0x73/0xb0 fs/read_write.c:587
   do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
   entry_SYSCALL_64_after_hwframe+0x49/0xbe


stack backtrace:
CPU: 0 PID: 15554 Comm: syz-executor.5 Not tainted 4.19.57 #30
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+0x172/0x1f0 lib/dump_stack.c:113
 print_bad_irq_dependency kernel/locking/lockdep.c:1568 [inline]
 check_usage.cold+0x611/0x946 kernel/locking/lockdep.c:1600
 check_irq_usage kernel/locking/lockdep.c:1656 [inline]
 check_prev_add_irq kernel/locking/lockdep_states.h:8 [inline]
 check_prev_add kernel/locking/lockdep.c:1866 [inline]
 check_prevs_add kernel/locking/lockdep.c:1974 [inline]
 validate_chain kernel/locking/lockdep.c:2415 [inline]
 __lock_acquire+0x1ee4/0x48f0 kernel/locking/lockdep.c:3411
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 userfaultfd_ctx_read fs/userfaultfd.c:1046 [inline]
 userfaultfd_read+0x394/0x18c0 fs/userfaultfd.c:1204
 __vfs_read+0x114/0x800 fs/read_write.c:416
 vfs_read+0x194/0x3d0 fs/read_write.c:452
 ksys_read+0x14f/0x2d0 fs/read_write.c:579
 __do_sys_read fs/read_write.c:589 [inline]
 __se_sys_read fs/read_write.c:587 [inline]
 __x64_sys_read+0x73/0xb0 fs/read_write.c:587
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4597c9
Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8f82e51c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004597c9
RDX: 0000000000000064 RSI: 0000000020009f9c RDI: 0000000000000003
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8f82e526d4
R13: 00000000004c58fc R14: 00000000004dba38 R15: 00000000ffffffff
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): kobject_uevent_env
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000c3d9789): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
audit: type=1400 audit(1562352387.313:213): avc:  denied  { sys_admin } for  pid=15872 comm="syz-executor.5" capability=21  scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
ntfs: (device loop1): parse_options(): Unrecognized mount option .
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop2' (0000000035f90158): kobject_uevent_env
kobject: 'loop2' (0000000035f90158): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
ntfs: (device loop1): parse_options(): Unrecognized mount option .
kobject: 'loop3' (00000000d7bb98c8): kobject_uevent_env
kobject: 'loop3' (00000000d7bb98c8): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (0000000004e8511e): kobject_uevent_env
kobject: 'loop4' (0000000004e8511e): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop0' (0000000069b5e442): kobject_uevent_env
kobject: 'loop0' (0000000069b5e442): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): kobject_uevent_env
kobject: 'loop5' (00000000b27fd696): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'
ntfs: (device loop1): parse_options(): Unrecognized mount option .
kobject: 'loop1' (000000005cb11ab3): kobject_uevent_env
kobject: 'loop1' (000000005cb11ab3): fill_kobj_path: path = '/devices/virtual/block/loop1'

Crashes (19):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/07/05 18:46 linux-4.19.y 1a0592436669 f62e1e85 .config console log report ci2-linux-4-19
2019/07/02 23:40 linux-4.19.y aec3002d07fd 55565fa0 .config console log report ci2-linux-4-19
2019/06/21 23:58 linux-4.19.y 9f31eb60d7a2 34bf9440 .config console log report ci2-linux-4-19
2019/06/21 18:34 linux-4.19.y 9f31eb60d7a2 34bf9440 .config console log report ci2-linux-4-19
2019/06/21 15:16 linux-4.19.y 9f31eb60d7a2 34bf9440 .config console log report ci2-linux-4-19
2019/06/21 12:30 linux-4.19.y 9f31eb60d7a2 34bf9440 .config console log report ci2-linux-4-19
2019/06/21 08:09 linux-4.19.y 9f31eb60d7a2 34bf9440 .config console log report ci2-linux-4-19
2019/06/21 04:22 linux-4.19.y 9f31eb60d7a2 34bf9440 .config console log report ci2-linux-4-19
2019/06/19 07:19 linux-4.19.y 9f31eb60d7a2 34bf9440 .config console log report ci2-linux-4-19
2019/06/17 17:19 linux-4.19.y 7aa823a959e1 442206d7 .config console log report ci2-linux-4-19
2019/06/17 16:56 linux-4.19.y 7aa823a959e1 442206d7 .config console log report ci2-linux-4-19
2019/06/17 16:29 linux-4.19.y 7aa823a959e1 442206d7 .config console log report ci2-linux-4-19
2019/06/17 13:45 linux-4.19.y 7aa823a959e1 442206d7 .config console log report ci2-linux-4-19
2019/06/17 12:45 linux-4.19.y 7aa823a959e1 442206d7 .config console log report ci2-linux-4-19
2019/06/17 12:40 linux-4.19.y 7aa823a959e1 442206d7 .config console log report ci2-linux-4-19
2019/06/17 09:43 linux-4.19.y 7aa823a959e1 442206d7 .config console log report ci2-linux-4-19
2019/06/17 09:12 linux-4.19.y 7aa823a959e1 442206d7 .config console log report ci2-linux-4-19
2019/06/17 02:18 linux-4.19.y 7aa823a959e1 442206d7 .config console log report ci2-linux-4-19
2019/06/06 02:39 linux-4.19.y e109a984cf38 a547defc .config console log report ci2-linux-4-19
* Struck through repros no longer work on HEAD.