8021q: adding VLAN 0 to HW filter on device team0
8021q: adding VLAN 0 to HW filter on device team0
8021q: adding VLAN 0 to HW filter on device team0
=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
4.20.0-rc6+ #275 Not tainted
-----------------------------------------------------
syz-executor1/8250 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
00000000c9dddf37 (&ctx->fd_wqh){....}, at: spin_lock include/linux/spinlock.h:329 [inline]
00000000c9dddf37 (&ctx->fd_wqh){....}, at: aio_poll+0x760/0x1420 fs/aio.c:1748
and this task is already holding:
00000000cf0a0e79 (&(&ctx->ctx_lock)->rlock){..-.}, at: spin_lock_irq include/linux/spinlock.h:354 [inline]
00000000cf0a0e79 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll+0x738/0x1420 fs/aio.c:1747
which would create a new lock dependency:
(&(&ctx->ctx_lock)->rlock){..-.} -> (&ctx->fd_wqh){....}
but this new dependency connects a SOFTIRQ-irq-safe lock:
(&(&ctx->ctx_lock)->rlock){..-.}
... which became SOFTIRQ-irq-safe at:
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
_raw_spin_lock_irq+0x61/0x80 kernel/locking/spinlock.c:160
spin_lock_irq include/linux/spinlock.h:354 [inline]
free_ioctx_users+0xbc/0x710 fs/aio.c:603
percpu_ref_put_many include/linux/percpu-refcount.h:285 [inline]
percpu_ref_put include/linux/percpu-refcount.h:301 [inline]
percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline]
percpu_ref_switch_to_atomic_rcu+0x563/0x730 lib/percpu-refcount.c:158
__rcu_reclaim kernel/rcu/rcu.h:240 [inline]
rcu_do_batch kernel/rcu/tree.c:2437 [inline]
invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline]
rcu_process_callbacks+0x100a/0x1ac0 kernel/rcu/tree.c:2697
__do_softirq+0x308/0xb7e kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x17f/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:57
arch_safe_halt arch/x86/include/asm/paravirt.h:151 [inline]
default_idle+0xbf/0x490 arch/x86/kernel/process.c:561
arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:552
default_idle_call+0x6d/0x90 kernel/sched/idle.c:93
cpuidle_idle_call kernel/sched/idle.c:153 [inline]
do_idle+0x49b/0x5c0 kernel/sched/idle.c:262
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:353
start_secondary+0x487/0x5f0 arch/x86/kernel/smpboot.c:271
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
to a SOFTIRQ-irq-unsafe lock:
(&ctx->fault_pending_wqh){+.+.}
... which became SOFTIRQ-irq-unsafe at:
...
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144
spin_lock include/linux/spinlock.h:329 [inline]
userfaultfd_release+0x63e/0x8d0 fs/userfaultfd.c:909
__fput+0x385/0xa30 fs/file_table.c:278
____fput+0x15/0x20 fs/file_table.c:309
task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
get_signal+0x1558/0x1980 kernel/signal.c:2347
do_signal+0x9c/0x21c0 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_32_irqs_on arch/x86/entry/common.c:341 [inline]
do_fast_syscall_32+0xcd5/0xfb2 arch/x86/entry/common.c:397
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
other info that might help us debug this:
Chain exists of:
&(&ctx->ctx_lock)->rlock --> &ctx->fd_wqh --> &ctx->fault_pending_wqh
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-executor1/8250:
#0: 00000000cf0a0e79 (&(&ctx->ctx_lock)->rlock){..-.}, at: spin_lock_irq include/linux/spinlock.h:354 [inline]
#0: 00000000cf0a0e79 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll+0x738/0x1420 fs/aio.c:1747
the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (&(&ctx->ctx_lock)->rlock){..-.} {
IN-SOFTIRQ-W at:
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
_raw_spin_lock_irq+0x61/0x80 kernel/locking/spinlock.c:160
spin_lock_irq include/linux/spinlock.h:354 [inline]
free_ioctx_users+0xbc/0x710 fs/aio.c:603
percpu_ref_put_many include/linux/percpu-refcount.h:285 [inline]
percpu_ref_put include/linux/percpu-refcount.h:301 [inline]
percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline]
percpu_ref_switch_to_atomic_rcu+0x563/0x730 lib/percpu-refcount.c:158
__rcu_reclaim kernel/rcu/rcu.h:240 [inline]
rcu_do_batch kernel/rcu/tree.c:2437 [inline]
invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline]
rcu_process_callbacks+0x100a/0x1ac0 kernel/rcu/tree.c:2697
__do_softirq+0x308/0xb7e kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x17f/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:57
arch_safe_halt arch/x86/include/asm/paravirt.h:151 [inline]
default_idle+0xbf/0x490 arch/x86/kernel/process.c:561
arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:552
default_idle_call+0x6d/0x90 kernel/sched/idle.c:93
cpuidle_idle_call kernel/sched/idle.c:153 [inline]
do_idle+0x49b/0x5c0 kernel/sched/idle.c:262
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:353
start_secondary+0x487/0x5f0 arch/x86/kernel/smpboot.c:271
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
INITIAL USE at:
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
_raw_spin_lock_irq+0x61/0x80 kernel/locking/spinlock.c:160
spin_lock_irq include/linux/spinlock.h:354 [inline]
free_ioctx_users+0xbc/0x710 fs/aio.c:603
percpu_ref_put_many include/linux/percpu-refcount.h:285 [inline]
percpu_ref_put include/linux/percpu-refcount.h:301 [inline]
percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline]
percpu_ref_switch_to_atomic_rcu+0x563/0x730 lib/percpu-refcount.c:158
__rcu_reclaim kernel/rcu/rcu.h:240 [inline]
rcu_do_batch kernel/rcu/tree.c:2437 [inline]
invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline]
rcu_process_callbacks+0x100a/0x1ac0 kernel/rcu/tree.c:2697
__do_softirq+0x308/0xb7e kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x17f/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:57
arch_safe_halt arch/x86/include/asm/paravirt.h:151 [inline]
default_idle+0xbf/0x490 arch/x86/kernel/process.c:561
arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:552
default_idle_call+0x6d/0x90 kernel/sched/idle.c:93
cpuidle_idle_call kernel/sched/idle.c:153 [inline]
do_idle+0x49b/0x5c0 kernel/sched/idle.c:262
cpu_startup_entry+0x18/0x20 kernel/sched/idle.c:353
start_secondary+0x487/0x5f0 arch/x86/kernel/smpboot.c:271
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
}
... key at: [<ffffffff8b119be0>] __key.51068+0x0/0x40
... acquired at:
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144
spin_lock include/linux/spinlock.h:329 [inline]
aio_poll+0x760/0x1420 fs/aio.c:1748
io_submit_one+0xa49/0xf80 fs/aio.c:1851
__do_compat_sys_io_submit fs/aio.c:1957 [inline]
__se_compat_sys_io_submit fs/aio.c:1928 [inline]
__ia32_compat_sys_io_submit+0x1b4/0x580 fs/aio.c:1928
do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
the dependencies between the lock to be acquired
and SOFTIRQ-irq-unsafe lock:
-> (&ctx->fault_pending_wqh){+.+.} {
HARDIRQ-ON-W at:
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144
spin_lock include/linux/spinlock.h:329 [inline]
userfaultfd_release+0x63e/0x8d0 fs/userfaultfd.c:909
__fput+0x385/0xa30 fs/file_table.c:278
____fput+0x15/0x20 fs/file_table.c:309
task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
get_signal+0x1558/0x1980 kernel/signal.c:2347
do_signal+0x9c/0x21c0 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_32_irqs_on arch/x86/entry/common.c:341 [inline]
do_fast_syscall_32+0xcd5/0xfb2 arch/x86/entry/common.c:397
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
SOFTIRQ-ON-W at:
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144
spin_lock include/linux/spinlock.h:329 [inline]
userfaultfd_release+0x63e/0x8d0 fs/userfaultfd.c:909
__fput+0x385/0xa30 fs/file_table.c:278
____fput+0x15/0x20 fs/file_table.c:309
task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
get_signal+0x1558/0x1980 kernel/signal.c:2347
do_signal+0x9c/0x21c0 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_32_irqs_on arch/x86/entry/common.c:341 [inline]
do_fast_syscall_32+0xcd5/0xfb2 arch/x86/entry/common.c:397
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
INITIAL USE at:
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144
spin_lock include/linux/spinlock.h:329 [inline]
userfaultfd_ctx_read+0x4f3/0x2180 fs/userfaultfd.c:1033
userfaultfd_read+0x1e2/0x2c0 fs/userfaultfd.c:1191
__vfs_read+0x117/0x9b0 fs/read_write.c:416
vfs_read+0x17f/0x3c0 fs/read_write.c:452
ksys_read+0x101/0x260 fs/read_write.c:578
__do_sys_read fs/read_write.c:588 [inline]
__se_sys_read fs/read_write.c:586 [inline]
__ia32_sys_read+0x71/0xb0 fs/read_write.c:586
do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
}
... key at: [<ffffffff8b119a20>] __key.44676+0x0/0x40
... acquired at:
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144
spin_lock include/linux/spinlock.h:329 [inline]
userfaultfd_ctx_read+0x4f3/0x2180 fs/userfaultfd.c:1033
userfaultfd_read+0x1e2/0x2c0 fs/userfaultfd.c:1191
__vfs_read+0x117/0x9b0 fs/read_write.c:416
vfs_read+0x17f/0x3c0 fs/read_write.c:452
ksys_read+0x101/0x260 fs/read_write.c:578
__do_sys_read fs/read_write.c:588 [inline]
__se_sys_read fs/read_write.c:586 [inline]
__ia32_sys_read+0x71/0xb0 fs/read_write.c:586
do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
-> (&ctx->fd_wqh){....} {
INITIAL USE at:
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
_raw_spin_lock_irq+0x61/0x80 kernel/locking/spinlock.c:160
spin_lock_irq include/linux/spinlock.h:354 [inline]
userfaultfd_ctx_read+0x2e4/0x2180 fs/userfaultfd.c:1029
userfaultfd_read+0x1e2/0x2c0 fs/userfaultfd.c:1191
__vfs_read+0x117/0x9b0 fs/read_write.c:416
vfs_read+0x17f/0x3c0 fs/read_write.c:452
ksys_read+0x101/0x260 fs/read_write.c:578
__do_sys_read fs/read_write.c:588 [inline]
__se_sys_read fs/read_write.c:586 [inline]
__ia32_sys_read+0x71/0xb0 fs/read_write.c:586
do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
}
... key at: [<ffffffff8b119960>] __key.44679+0x0/0x40
... acquired at:
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144
spin_lock include/linux/spinlock.h:329 [inline]
aio_poll+0x760/0x1420 fs/aio.c:1748
io_submit_one+0xa49/0xf80 fs/aio.c:1851
__do_compat_sys_io_submit fs/aio.c:1957 [inline]
__se_compat_sys_io_submit fs/aio.c:1928 [inline]
__ia32_compat_sys_io_submit+0x1b4/0x580 fs/aio.c:1928
do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
stack backtrace:
CPU: 0 PID: 8250 Comm: syz-executor1 Not tainted 4.20.0-rc6+ #275
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+0x244/0x39d lib/dump_stack.c:113
print_bad_irq_dependency kernel/locking/lockdep.c:1570 [inline]
check_usage.cold.58+0x6d5/0xad1 kernel/locking/lockdep.c:1602
check_irq_usage kernel/locking/lockdep.c:1658 [inline]
check_prev_add_irq kernel/locking/lockdep_states.h:8 [inline]
check_prev_add kernel/locking/lockdep.c:1868 [inline]
check_prevs_add kernel/locking/lockdep.c:1976 [inline]
validate_chain kernel/locking/lockdep.c:2347 [inline]
__lock_acquire+0x238a/0x4c20 kernel/locking/lockdep.c:3341
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144
spin_lock include/linux/spinlock.h:329 [inline]
aio_poll+0x760/0x1420 fs/aio.c:1748
io_submit_one+0xa49/0xf80 fs/aio.c:1851
__do_compat_sys_io_submit fs/aio.c:1957 [inline]
__se_compat_sys_io_submit fs/aio.c:1928 [inline]
__ia32_compat_sys_io_submit+0x1b4/0x580 fs/aio.c:1928
do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f63a29
Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f7f1c0cc EFLAGS: 00000296 ORIG_RAX: 00000000000000f8
RAX: ffffffffffffffda RBX: 00000000f7f3e000 RCX: 0000000000000001
RDX: 0000000020000b00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
kobject: 'loop1' (00000000f3cd7fb0): kobject_uevent_env
kobject: 'loop1' (00000000f3cd7fb0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop0' (00000000489adcd5): kobject_uevent_env
kobject: 'loop0' (00000000489adcd5): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop3' (00000000dc253c34): kobject_uevent_env
kobject: 'loop3' (00000000dc253c34): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (000000003c0b03a6): kobject_uevent_env
kobject: 'loop4' (000000003c0b03a6): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop5' (000000001f2c98b4): kobject_uevent_env
kobject: 'loop5' (000000001f2c98b4): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000040207c88): kobject_uevent_env
kobject: 'loop2' (0000000040207c88): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop1' (00000000f3cd7fb0): kobject_uevent_env
kobject: 'loop1' (00000000f3cd7fb0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (000000003c0b03a6): kobject_uevent_env
kobject: 'loop4' (000000003c0b03a6): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000dc253c34): kobject_uevent_env
kobject: 'loop3' (00000000dc253c34): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop5' (000000001f2c98b4): kobject_uevent_env
kobject: 'loop5' (000000001f2c98b4): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000040207c88): kobject_uevent_env
kobject: 'loop2' (0000000040207c88): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop0' (00000000489adcd5): kobject_uevent_env
kobject: 'loop0' (00000000489adcd5): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop4' (000000003c0b03a6): kobject_uevent_env
kobject: 'loop4' (000000003c0b03a6): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop1' (00000000f3cd7fb0): kobject_uevent_env
kobject: 'loop1' (00000000f3cd7fb0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (000000001f2c98b4): kobject_uevent_env
kobject: 'loop5' (000000001f2c98b4): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop3' (00000000dc253c34): kobject_uevent_env
kobject: 'loop3' (00000000dc253c34): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000040207c88): kobject_uevent_env
kobject: 'loop2' (0000000040207c88): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop0' (00000000489adcd5): kobject_uevent_env
kobject: 'loop0' (00000000489adcd5): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000f3cd7fb0): kobject_uevent_env
kobject: 'loop1' (00000000f3cd7fb0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (000000003c0b03a6): kobject_uevent_env
kobject: 'loop4' (000000003c0b03a6): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000dc253c34): kobject_uevent_env
kobject: 'loop3' (00000000dc253c34): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop5' (000000001f2c98b4): kobject_uevent_env
kobject: 'loop5' (000000001f2c98b4): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000040207c88): kobject_uevent_env
kobject: 'loop2' (0000000040207c88): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop0' (00000000489adcd5): kobject_uevent_env
kobject: 'loop0' (00000000489adcd5): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000f3cd7fb0): kobject_uevent_env
kobject: 'loop1' (00000000f3cd7fb0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (000000003c0b03a6): kobject_uevent_env
kobject: 'loop4' (000000003c0b03a6): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000dc253c34): kobject_uevent_env
kobject: 'loop3' (00000000dc253c34): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop5' (000000001f2c98b4): kobject_uevent_env
kobject: 'loop5' (000000001f2c98b4): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000040207c88): kobject_uevent_env
kobject: 'loop2' (0000000040207c88): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop0' (00000000489adcd5): kobject_uevent_env
kobject: 'loop0' (00000000489adcd5): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000f3cd7fb0): kobject_uevent_env
kobject: 'loop1' (00000000f3cd7fb0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (000000003c0b03a6): kobject_uevent_env
kobject: 'loop4' (000000003c0b03a6): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000dc253c34): kobject_uevent_env
kobject: 'loop3' (00000000dc253c34): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop5' (000000001f2c98b4): kobject_uevent_env
kobject: 'loop5' (000000001f2c98b4): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000040207c88): kobject_uevent_env
kobject: 'loop2' (0000000040207c88): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop0' (00000000489adcd5): kobject_uevent_env
kobject: 'loop0' (00000000489adcd5): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000f3cd7fb0): kobject_uevent_env
kobject: 'loop1' (00000000f3cd7fb0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (000000003c0b03a6): kobject_uevent_env
kobject: 'loop4' (000000003c0b03a6): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000dc253c34): kobject_uevent_env
kobject: 'loop3' (00000000dc253c34): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop5' (000000001f2c98b4): kobject_uevent_env
kobject: 'loop5' (000000001f2c98b4): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000040207c88): kobject_uevent_env
kobject: 'loop2' (0000000040207c88): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop0' (00000000489adcd5): kobject_uevent_env
kobject: 'loop0' (00000000489adcd5): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000f3cd7fb0): kobject_uevent_env
kobject: 'loop1' (00000000f3cd7fb0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (000000003c0b03a6): kobject_uevent_env
kobject: 'loop4' (000000003c0b03a6): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000dc253c34): kobject_uevent_env
kobject: 'loop3' (00000000dc253c34): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000040207c88): kobject_uevent_env
kobject: 'loop2' (0000000040207c88): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop5' (000000001f2c98b4): kobject_uevent_env
kobject: 'loop5' (000000001f2c98b4): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (00000000489adcd5): kobject_uevent_env
kobject: 'loop0' (00000000489adcd5): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000f3cd7fb0): kobject_uevent_env
kobject: 'loop1' (00000000f3cd7fb0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (000000003c0b03a6): kobject_uevent_env
kobject: 'loop4' (000000003c0b03a6): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000dc253c34): kobject_uevent_env
kobject: 'loop3' (00000000dc253c34): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (0000000040207c88): kobject_uevent_env
kobject: 'loop2' (0000000040207c88): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop5' (000000001f2c98b4): kobject_uevent_env
kobject: 'loop5' (000000001f2c98b4): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (00000000489adcd5): kobject_uevent_env
kobject: 'loop0' (00000000489adcd5): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop1' (00000000f3cd7fb0): kobject_uevent_env
kobject: 'loop1' (00000000f3cd7fb0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (000000003c0b03a6): kobject_uevent_env
kobject: 'loop4' (000000003c0b03a6): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (00000000dc253c34): kobject_uevent_env
kobject: 'loop3' (00000000dc253c34): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop0' (00000000489adcd5): kobject_uevent_env
kobject: 'loop0' (00000000489adcd5): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop5' (000000001f2c98b4): kobject_uevent_env
kobject: 'loop5' (000000001f2c98b4): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop2' (0000000040207c88): kobject_uevent_env
kobject: 'loop2' (0000000040207c88): fill_kobj_path: path = '/devices/virtual/block/loop2'