------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.11.0-rc4-next-20240823-syzkaller #0 Not tainted
------------------------------------------------------
syz.2.10/5338 is trying to acquire lock:
ffffffff8e815120 (console_owner){-...}-{0:0}, at: console_trylock_spinning kernel/printk/printk.c:2024 [inline]
ffffffff8e815120 (console_owner){-...}-{0:0}, at: vprintk_emit+0x602/0xa10 kernel/printk/printk.c:2398
but task is already holding lock:
ffff8880b903ea58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:595
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #4 (&rq->__lock){-.-.}-{2:2}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
_raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:587
raw_spin_rq_lock kernel/sched/sched.h:1488 [inline]
task_rq_lock+0xc6/0x360 kernel/sched/core.c:689
cgroup_move_task+0x92/0x2d0 kernel/sched/psi.c:1161
css_set_move_task+0x72e/0x950 kernel/cgroup/cgroup.c:898
cgroup_post_fork+0x256/0x880 kernel/cgroup/cgroup.c:6690
copy_process+0x39e9/0x3d50 kernel/fork.c:2598
kernel_clone+0x226/0x8f0 kernel/fork.c:2784
user_mode_thread+0x132/0x1a0 kernel/fork.c:2862
rest_init+0x23/0x300 init/main.c:712
start_kernel+0x47f/0x500 init/main.c:1105
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x147
-> #3 (&p->pi_lock){-.-.}-{2:2}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
try_to_wake_up+0xb0/0x1480 kernel/sched/core.c:4150
__wake_up_common kernel/sched/wait.c:89 [inline]
__wake_up_common_lock+0x130/0x1e0 kernel/sched/wait.c:106
tty_port_default_wakeup+0xa6/0xf0 drivers/tty/tty_port.c:69
serial8250_tx_chars+0x6e2/0x930 drivers/tty/serial/8250/8250_port.c:1821
serial8250_handle_irq+0x630/0xb80 drivers/tty/serial/8250/8250_port.c:1929
serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1949
serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:86
__handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210
handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831
generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
handle_irq arch/x86/kernel/irq.c:247 [inline]
call_irq_handler arch/x86/kernel/irq.c:259 [inline]
__common_interrupt+0x136/0x230 arch/x86/kernel/irq.c:285
common_interrupt+0xb4/0xd0 arch/x86/kernel/irq.c:278
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702
cpuidle_enter_state+0x112/0x480 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:230 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:326
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424
start_secondary+0x102/0x110 arch/x86/kernel/smpboot.c:313
common_startup_64+0x13e/0x147
-> #2 (&tty->write_wait){-.-.}-{2:2}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
__wake_up_common_lock+0x25/0x1e0 kernel/sched/wait.c:105
tty_port_default_wakeup+0xa6/0xf0 drivers/tty/tty_port.c:69
serial8250_tx_chars+0x6e2/0x930 drivers/tty/serial/8250/8250_port.c:1821
serial8250_handle_irq+0x630/0xb80 drivers/tty/serial/8250/8250_port.c:1929
serial8250_default_handle_irq+0xd1/0x1f0 drivers/tty/serial/8250/8250_port.c:1949
serial8250_interrupt+0xa9/0x1f0 drivers/tty/serial/8250/8250_core.c:86
__handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210
handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831
generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
handle_irq arch/x86/kernel/irq.c:247 [inline]
call_irq_handler arch/x86/kernel/irq.c:259 [inline]
__common_interrupt+0x136/0x230 arch/x86/kernel/irq.c:285
common_interrupt+0xb4/0xd0 arch/x86/kernel/irq.c:278
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111
acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702
cpuidle_enter_state+0x112/0x480 drivers/cpuidle/cpuidle.c:267
cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:388
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:230 [inline]
do_idle+0x375/0x5d0 kernel/sched/idle.c:326
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424
start_secondary+0x102/0x110 arch/x86/kernel/smpboot.c:313
common_startup_64+0x13e/0x147
-> #1 (&port_lock_key){-.-.}-{2:2}:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
uart_port_lock_irqsave include/linux/serial_core.h:711 [inline]
serial8250_console_write+0x1a7/0x1ed0 drivers/tty/serial/8250/8250_port.c:3352
console_emit_next_record kernel/printk/printk.c:3010 [inline]
console_flush_all+0x882/0xf50 kernel/printk/printk.c:3082
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3153
vprintk_emit+0x87d/0xa10 kernel/printk/printk.c:2399
_printk+0xd5/0x120 kernel/printk/printk.c:2424
register_console+0xbf5/0xfd0 kernel/printk/printk.c:3737
univ8250_console_init+0x52/0x90 drivers/tty/serial/8250/8250_core.c:513
console_init+0x1b8/0x6f0 kernel/printk/printk.c:3919
start_kernel+0x2d8/0x500 init/main.c:1040
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0x9f/0xa0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x147
-> #0 (console_owner){-...}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3161 [inline]
check_prevs_add kernel/locking/lockdep.c:3280 [inline]
validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
__lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
console_trylock_spinning kernel/printk/printk.c:2024 [inline]
vprintk_emit+0x61f/0xa10 kernel/printk/printk.c:2398
_printk+0xd5/0x120 kernel/printk/printk.c:2424
__report_bug lib/bug.c:195 [inline]
report_bug+0x346/0x500 lib/bug.c:219
handle_bug+0x60/0x90 arch/x86/kernel/traps.c:285
exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:309
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
place_entity+0x463/0x520 kernel/sched/fair.c:5337
enqueue_entity+0x271/0x1920 kernel/sched/fair.c:5409
enqueue_task_fair+0x206/0xe30 kernel/sched/fair.c:6985
enqueue_task+0x1a5/0x300 kernel/sched/core.c:2014
activate_task kernel/sched/core.c:2056 [inline]
ttwu_do_activate+0x1d1/0x7e0 kernel/sched/core.c:3665
ttwu_queue kernel/sched/core.c:3940 [inline]
try_to_wake_up+0x8bc/0x1480 kernel/sched/core.c:4266
swake_up_locked kernel/sched/swait.c:29 [inline]
complete_with_flags kernel/sched/completion.c:24 [inline]
complete+0xac/0x1c0 kernel/sched/completion.c:47
random_recv_done+0x138/0x1e0 drivers/char/hw_random/virtio-rng.c:48
vring_interrupt+0x21d/0x380 drivers/virtio/virtio_ring.c:2595
__handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210
handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831
generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
handle_irq arch/x86/kernel/irq.c:247 [inline]
call_irq_handler arch/x86/kernel/irq.c:259 [inline]
__common_interrupt+0x136/0x230 arch/x86/kernel/irq.c:285
common_interrupt+0xb4/0xd0 arch/x86/kernel/irq.c:278
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
debug_object_activate+0x3e4/0x510 lib/debugobjects.c:727
debug_rcu_head_queue kernel/rcu/rcu.h:224 [inline]
__call_rcu_common kernel/rcu/tree.c:3071 [inline]
call_rcu+0x97/0xa70 kernel/rcu/tree.c:3190
destroy_inode fs/inode.c:401 [inline]
evict+0x8e4/0x9e0 fs/inode.c:805
__dentry_kill+0x20d/0x630 fs/dcache.c:610
dput+0x19f/0x2b0 fs/dcache.c:852
find_next_child fs/libfs.c:607 [inline]
simple_recursive_removal+0x2bd/0x8f0 fs/libfs.c:622
debugfs_remove+0x49/0x70 fs/debugfs/inode.c:823
kvm_destroy_vm_debugfs virt/kvm/kvm_main.c:1033 [inline]
kvm_destroy_vm virt/kvm/kvm_main.c:1312 [inline]
kvm_put_kvm+0x132/0x1300 virt/kvm/kvm_main.c:1386
kvm_vcpu_release+0x57/0x70 virt/kvm/kvm_main.c:4151
__fput+0x24b/0x890 fs/file_table.c:424
task_work_run+0x24f/0x310 kernel/task_work.c:228
get_signal+0x16ad/0x1810 kernel/signal.c:2690
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
other info that might help us debug this:
Chain exists of:
console_owner --> &p->pi_lock --> &rq->__lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&rq->__lock);
lock(&p->pi_lock);
lock(&rq->__lock);
lock(console_owner);
*** DEADLOCK ***
4 locks held by syz.2.10/5338:
#0: ffff88805d5e6e90 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:798 [inline]
#0: ffff88805d5e6e90 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: simple_recursive_removal+0x33e/0x8f0 fs/libfs.c:631
#1: ffff88802010e158 (&x->wait#13){-.-.}-{2:2}, at: complete_with_flags kernel/sched/completion.c:20 [inline]
#1: ffff88802010e158 (&x->wait#13){-.-.}-{2:2}, at: complete+0x28/0x1c0 kernel/sched/completion.c:47
#2: ffff88807e2a4618 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
#2: ffff88807e2a4618 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xb0/0x1480 kernel/sched/core.c:4150
#3: ffff8880b903ea58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:595
stack backtrace:
CPU: 1 UID: 0 PID: 5338 Comm: syz.2.10 Not tainted 6.11.0-rc4-next-20240823-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_circular_bug+0x13a/0x1b0 kernel/locking/lockdep.c:2074
check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2206
check_prev_add kernel/locking/lockdep.c:3161 [inline]
check_prevs_add kernel/locking/lockdep.c:3280 [inline]
validate_chain+0x18ef/0x5920 kernel/locking/lockdep.c:3904
__lock_acquire+0x1384/0x2050 kernel/locking/lockdep.c:5202
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825
console_trylock_spinning kernel/printk/printk.c:2024 [inline]
vprintk_emit+0x61f/0xa10 kernel/printk/printk.c:2398
_printk+0xd5/0x120 kernel/printk/printk.c:2424
__report_bug lib/bug.c:195 [inline]
report_bug+0x346/0x500 lib/bug.c:219
handle_bug+0x60/0x90 arch/x86/kernel/traps.c:285
exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:309
asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
RIP: 0010:place_entity+0x463/0x520 kernel/sched/fair.c:5337
Code: 27 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 48 8b 3c 24 4c 89 fe e8 77 14 00 00 48 89 04 24 e9 e0 fd ff ff 90 <0f> 0b 90 41 bd 01 00 00 00 e9 22 ff ff ff 89 d9 80 e1 07 38 c1 0f
RSP: 0018:ffffc90000a189b0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000100000
RDX: 0000000000000400 RSI: ffff88807e2a3c80 RDI: ffff88807e2a3d00
RBP: dffffc0000000000 R08: ffff88807bf207c7 R09: 1ffff1100f7e40f8
R10: dffffc0000000000 R11: ffffed100f7e40f9 R12: 000000000a0a61f6
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88807e2a3c80
enqueue_entity+0x271/0x1920 kernel/sched/fair.c:5409
enqueue_task_fair+0x206/0xe30 kernel/sched/fair.c:6985
enqueue_task+0x1a5/0x300 kernel/sched/core.c:2014
activate_task kernel/sched/core.c:2056 [inline]
ttwu_do_activate+0x1d1/0x7e0 kernel/sched/core.c:3665
ttwu_queue kernel/sched/core.c:3940 [inline]
try_to_wake_up+0x8bc/0x1480 kernel/sched/core.c:4266
swake_up_locked kernel/sched/swait.c:29 [inline]
complete_with_flags kernel/sched/completion.c:24 [inline]
complete+0xac/0x1c0 kernel/sched/completion.c:47
random_recv_done+0x138/0x1e0 drivers/char/hw_random/virtio-rng.c:48
vring_interrupt+0x21d/0x380 drivers/virtio/virtio_ring.c:2595
__handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210
handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831
generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
handle_irq arch/x86/kernel/irq.c:247 [inline]
call_irq_handler arch/x86/kernel/irq.c:259 [inline]
__common_interrupt+0x136/0x230 arch/x86/kernel/irq.c:285
common_interrupt+0xb4/0xd0 arch/x86/kernel/irq.c:278
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 be 8a 33 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 43 f2 99 f5 65 8b 05 f4 ce 3a 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc900043a7540 EFLAGS: 00000206
RAX: 7b54d3f2b990df00 RBX: 1ffff92000874eac RCX: ffffffff8170808a
RDX: dffffc0000000000 RSI: ffffffff8c0aca40 RDI: 0000000000000001
RBP: ffffc900043a75d0 R08: ffffffff937b3827 R09: 1ffffffff26f6704
R10: dffffc0000000000 R11: fffffbfff26f6705 R12: dffffc0000000000
R13: 1ffff92000874ea8 R14: ffffc900043a7560 R15: 0000000000000246
debug_object_activate+0x3e4/0x510 lib/debugobjects.c:727
debug_rcu_head_queue kernel/rcu/rcu.h:224 [inline]
__call_rcu_common kernel/rcu/tree.c:3071 [inline]
call_rcu+0x97/0xa70 kernel/rcu/tree.c:3190
destroy_inode fs/inode.c:401 [inline]
evict+0x8e4/0x9e0 fs/inode.c:805
__dentry_kill+0x20d/0x630 fs/dcache.c:610
dput+0x19f/0x2b0 fs/dcache.c:852
find_next_child fs/libfs.c:607 [inline]
simple_recursive_removal+0x2bd/0x8f0 fs/libfs.c:622
debugfs_remove+0x49/0x70 fs/debugfs/inode.c:823
kvm_destroy_vm_debugfs virt/kvm/kvm_main.c:1033 [inline]
kvm_destroy_vm virt/kvm/kvm_main.c:1312 [inline]
kvm_put_kvm+0x132/0x1300 virt/kvm/kvm_main.c:1386
kvm_vcpu_release+0x57/0x70 virt/kvm/kvm_main.c:4151
__fput+0x24b/0x890 fs/file_table.c:424
task_work_run+0x24f/0x310 kernel/task_work.c:228
get_signal+0x16ad/0x1810 kernel/signal.c:2690
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0bee379e79
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0bef166038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 00007f0bee515f80 RCX: 00007f0bee379e79
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000007
RBP: 00007f0bee3e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0bee515f80 R15: 00007ffcb90e8dc8
WARNING: CPU: 1 PID: 5338 at kernel/sched/fair.c:5337 place_entity+0x463/0x520 kernel/sched/fair.c:5337
Modules linked in:
CPU: 1 UID: 0 PID: 5338 Comm: syz.2.10 Not tainted 6.11.0-rc4-next-20240823-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:place_entity+0x463/0x520 kernel/sched/fair.c:5337
Code: 27 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 48 8b 3c 24 4c 89 fe e8 77 14 00 00 48 89 04 24 e9 e0 fd ff ff 90 <0f> 0b 90 41 bd 01 00 00 00 e9 22 ff ff ff 89 d9 80 e1 07 38 c1 0f
RSP: 0018:ffffc90000a189b0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000100000
RDX: 0000000000000400 RSI: ffff88807e2a3c80 RDI: ffff88807e2a3d00
RBP: dffffc0000000000 R08: ffff88807bf207c7 R09: 1ffff1100f7e40f8
R10: dffffc0000000000 R11: ffffed100f7e40f9 R12: 000000000a0a61f6
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88807e2a3c80
FS: 00007f0bef1666c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000078a78000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
enqueue_entity+0x271/0x1920 kernel/sched/fair.c:5409
enqueue_task_fair+0x206/0xe30 kernel/sched/fair.c:6985
enqueue_task+0x1a5/0x300 kernel/sched/core.c:2014
activate_task kernel/sched/core.c:2056 [inline]
ttwu_do_activate+0x1d1/0x7e0 kernel/sched/core.c:3665
ttwu_queue kernel/sched/core.c:3940 [inline]
try_to_wake_up+0x8bc/0x1480 kernel/sched/core.c:4266
swake_up_locked kernel/sched/swait.c:29 [inline]
complete_with_flags kernel/sched/completion.c:24 [inline]
complete+0xac/0x1c0 kernel/sched/completion.c:47
random_recv_done+0x138/0x1e0 drivers/char/hw_random/virtio-rng.c:48
vring_interrupt+0x21d/0x380 drivers/virtio/virtio_ring.c:2595
__handle_irq_event_percpu+0x29a/0xa80 kernel/irq/handle.c:158
handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
handle_irq_event+0x89/0x1f0 kernel/irq/handle.c:210
handle_edge_irq+0x25f/0xc20 kernel/irq/chip.c:831
generic_handle_irq_desc include/linux/irqdesc.h:173 [inline]
handle_irq arch/x86/kernel/irq.c:247 [inline]
call_irq_handler arch/x86/kernel/irq.c:259 [inline]
__common_interrupt+0x136/0x230 arch/x86/kernel/irq.c:285
common_interrupt+0xb4/0xd0 arch/x86/kernel/irq.c:278
asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 be 8a 33 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 43 f2 99 f5 65 8b 05 f4 ce 3a 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc900043a7540 EFLAGS: 00000206
RAX: 7b54d3f2b990df00 RBX: 1ffff92000874eac RCX: ffffffff8170808a
RDX: dffffc0000000000 RSI: ffffffff8c0aca40 RDI: 0000000000000001
RBP: ffffc900043a75d0 R08: ffffffff937b3827 R09: 1ffffffff26f6704
R10: dffffc0000000000 R11: fffffbfff26f6705 R12: dffffc0000000000
R13: 1ffff92000874ea8 R14: ffffc900043a7560 R15: 0000000000000246
debug_object_activate+0x3e4/0x510 lib/debugobjects.c:727
debug_rcu_head_queue kernel/rcu/rcu.h:224 [inline]
__call_rcu_common kernel/rcu/tree.c:3071 [inline]
call_rcu+0x97/0xa70 kernel/rcu/tree.c:3190
destroy_inode fs/inode.c:401 [inline]
evict+0x8e4/0x9e0 fs/inode.c:805
__dentry_kill+0x20d/0x630 fs/dcache.c:610
dput+0x19f/0x2b0 fs/dcache.c:852
find_next_child fs/libfs.c:607 [inline]
simple_recursive_removal+0x2bd/0x8f0 fs/libfs.c:622
debugfs_remove+0x49/0x70 fs/debugfs/inode.c:823
kvm_destroy_vm_debugfs virt/kvm/kvm_main.c:1033 [inline]
kvm_destroy_vm virt/kvm/kvm_main.c:1312 [inline]
kvm_put_kvm+0x132/0x1300 virt/kvm/kvm_main.c:1386
kvm_vcpu_release+0x57/0x70 virt/kvm/kvm_main.c:4151
__fput+0x24b/0x890 fs/file_table.c:424
task_work_run+0x24f/0x310 kernel/task_work.c:228
get_signal+0x16ad/0x1810 kernel/signal.c:2690
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0bee379e79
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0bef166038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 00007f0bee515f80 RCX: 00007f0bee379e79
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000007
RBP: 00007f0bee3e793e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0bee515f80 R15: 00007ffcb90e8dc8
----------------
Code disassembly (best guess):
0: 9c pushf
1: 8f 44 24 20 pop 0x20(%rsp)
5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1)
a: 74 08 je 0x14
c: 4c 89 f7 mov %r14,%rdi
f: e8 be 8a 33 f6 call 0xf6338ad2
14: f6 44 24 21 02 testb $0x2,0x21(%rsp)
19: 75 52 jne 0x6d
1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 43 f2 99 f5 call 0xf599f272 <-- trapping instruction
2f: 65 8b 05 f4 ce 3a 74 mov %gs:0x743acef4(%rip),%eax # 0x743acf2a
36: 85 c0 test %eax,%eax
38: 74 43 je 0x7d
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss