------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
5.15.173-syzkaller #0 Not tainted
------------------------------------------------------
syz.0.126/4544 is trying to acquire lock:
ffffffff8c9fc4b8 ((console_sem).lock){-.-.}-{2:2}, at: down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:138

but task is already holding lock:
ffff8880b8e28098 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:946

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&base->lock){-.-.}-{2:2}:
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
       lock_timer_base+0x120/0x260 kernel/time/timer.c:946
       __mod_timer+0x1d6/0xeb0 kernel/time/timer.c:1019
       queue_delayed_work_on+0x156/0x250 kernel/workqueue.c:1715
       psi_enqueue kernel/sched/stats.h:104 [inline]
       enqueue_task+0x2fe/0x3a0 kernel/sched/core.c:1970
       activate_task kernel/sched/core.c:2002 [inline]
       wake_up_new_task+0x515/0xb60 kernel/sched/core.c:4519
       kernel_clone+0x44e/0x960 kernel/fork.c:2627
       kernel_thread+0x168/0x1e0 kernel/fork.c:2655
       rest_init+0x21/0x330 init/main.c:706
       start_kernel+0x48c/0x540 init/main.c:1140
       secondary_startup_64_no_verify+0xb1/0xbb

-> #2 (&rq->__lock){-.-.}-{2:2}:
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       _raw_spin_lock_nested+0x2d/0x40 kernel/locking/spinlock.c:368
       raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
       raw_spin_rq_lock kernel/sched/sched.h:1326 [inline]
       rq_lock kernel/sched/sched.h:1621 [inline]
       task_fork_fair+0x5d/0x350 kernel/sched/fair.c:11484
       sched_cgroup_fork+0x2d3/0x330 kernel/sched/core.c:4463
       copy_process+0x224a/0x3ef0 kernel/fork.c:2319
       kernel_clone+0x210/0x960 kernel/fork.c:2603
       kernel_thread+0x168/0x1e0 kernel/fork.c:2655
       rest_init+0x21/0x330 init/main.c:706
       start_kernel+0x48c/0x540 init/main.c:1140
       secondary_startup_64_no_verify+0xb1/0xbb

-> #1 (&p->pi_lock){-.-.}-{2:2}:
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
       try_to_wake_up+0xae/0x1300 kernel/sched/core.c:4027
       up+0x6e/0x90 kernel/locking/semaphore.c:190
       __up_console_sem+0x11a/0x1e0 kernel/printk/printk.c:256
       console_unlock+0x1145/0x12b0 kernel/printk/printk.c:2760
       vprintk_emit+0xbf/0x150 kernel/printk/printk.c:2274
       dev_vprintk_emit+0x2aa/0x330 drivers/base/core.c:4618
       dev_printk_emit+0xd9/0x120 drivers/base/core.c:4629
       _dev_warn+0x11e/0x170 drivers/base/core.c:4685
       firmware_fallback_sysfs+0x681/0xc90 drivers/base/firmware_loader/fallback.c:654
       _request_firmware+0xc72/0x12c0 drivers/base/firmware_loader/main.c:876
       request_firmware_work_func+0x126/0x270 drivers/base/firmware_loader/main.c:1127
       process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
       worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
       kthread+0x3f6/0x4f0 kernel/kthread.c:334
       ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

-> #0 ((console_sem).lock){-.-.}-{2:2}:
       check_prev_add kernel/locking/lockdep.c:3053 [inline]
       check_prevs_add kernel/locking/lockdep.c:3172 [inline]
       validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788
       __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
       lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
       down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:138
       __down_trylock_console_sem+0x105/0x250 kernel/printk/printk.c:239
       console_trylock kernel/printk/printk.c:2575 [inline]
       console_trylock_spinning+0x8a/0x3f0 kernel/printk/printk.c:1867
       vprintk_emit+0xa6/0x150 kernel/printk/printk.c:2273
       _printk+0xd1/0x120 kernel/printk/printk.c:2299
       report_bug+0x1e5/0x2e0 lib/bug.c:195
       handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239
       exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259
       asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:604
       copy_from_user_nofault+0x15c/0x1c0
       bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
       ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline]
       bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
       bpf_prog_02073d59a3c0f06f+0x3d/0xe70
       bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
       __bpf_prog_run include/linux/filter.h:628 [inline]
       bpf_prog_run include/linux/filter.h:635 [inline]
       __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
       bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1916
       trace_timer_start include/trace/events/timer.h:52 [inline]
       enqueue_timer+0x3ae/0x540 kernel/time/timer.c:586
       internal_add_timer kernel/time/timer.c:611 [inline]
       __mod_timer+0xa60/0xeb0 kernel/time/timer.c:1062
       sk_reset_timer+0x1f/0xb0 net/core/sock.c:3136
       tcp_ack_snd_check net/ipv4/tcp_input.c:5628 [inline]
       tcp_rcv_established+0xf01/0x1e20 net/ipv4/tcp_input.c:6053
       tcp_v4_do_rcv+0x423/0x960 net/ipv4/tcp_ipv4.c:1731
       tcp_v4_rcv+0x2740/0x2d80 net/ipv4/tcp_ipv4.c:2143
       ip_protocol_deliver_rcu+0x381/0x730 net/ipv4/ip_input.c:204
       ip_local_deliver_finish+0x1db/0x320 net/ipv4/ip_input.c:231
       NF_HOOK+0x364/0x410 include/linux/netfilter.h:302
       dst_input include/net/dst.h:453 [inline]
       ip_sublist_rcv_finish net/ipv4/ip_input.c:577 [inline]
       ip_list_rcv_finish net/ipv4/ip_input.c:628 [inline]
       ip_sublist_rcv+0xb0f/0xe50 net/ipv4/ip_input.c:636
       ip_list_rcv+0x422/0x470 net/ipv4/ip_input.c:671
       __netif_receive_skb_list_ptype net/core/dev.c:5536 [inline]
       __netif_receive_skb_list_core+0x6b1/0x890 net/core/dev.c:5584
       __netif_receive_skb_list net/core/dev.c:5636 [inline]
       netif_receive_skb_list_internal+0x9ed/0xdf0 net/core/dev.c:5727
       gro_normal_list net/core/dev.c:5881 [inline]
       napi_complete_done+0x352/0x820 net/core/dev.c:6619
       virtqueue_napi_complete drivers/net/virtio_net.c:357 [inline]
       virtnet_poll+0xbd1/0x1260 drivers/net/virtio_net.c:1592
       __napi_poll+0xc7/0x440 net/core/dev.c:7043
       napi_poll net/core/dev.c:7110 [inline]
       net_rx_action+0x617/0xda0 net/core/dev.c:7200
       handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
       __do_softirq kernel/softirq.c:592 [inline]
       invoke_softirq kernel/softirq.c:432 [inline]
       __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
       irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
       common_interrupt+0xb3/0xd0 arch/x86/kernel/irq.c:240
       asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
       __sanitizer_cov_trace_switch+0x5d/0xe0 kernel/kcov.c:329
       do_futex+0x13f/0x1810 kernel/futex/core.c:3966
       __do_sys_futex kernel/futex/core.c:4059 [inline]
       __se_sys_futex+0x407/0x490 kernel/futex/core.c:4040
       do_syscall_x64 arch/x86/entry/common.c:50 [inline]
       do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
       entry_SYSCALL_64_after_hwframe+0x66/0xd0

other info that might help us debug this:

Chain exists of:
  (console_sem).lock --> &rq->__lock --> &base->lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&base->lock);
                               lock(&rq->__lock);
                               lock(&base->lock);
  lock((console_sem).lock);

 *** DEADLOCK ***

5 locks held by syz.0.126/4544:
 #0: ffffffff8cb1fc60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x9/0x30 include/linux/rcupdate.h:312
 #1: ffffffff8cb1fc60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311
 #2: ffff888022e60ca0 (slock-AF_INET/1){+.-.}-{2:2}, at: tcp_v4_rcv+0x26aa/0x2d80 net/ipv4/tcp_ipv4.c:2137
 #3: ffff8880b8e28098 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:946
 #4: ffffffff8cb1fc60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:311

stack backtrace:
CPU: 0 PID: 4544 Comm: syz.0.126 Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 check_noncircular+0x2f8/0x3b0 kernel/locking/lockdep.c:2133
 check_prev_add kernel/locking/lockdep.c:3053 [inline]
 check_prevs_add kernel/locking/lockdep.c:3172 [inline]
 validate_chain+0x1649/0x5930 kernel/locking/lockdep.c:3788
 __lock_acquire+0x1295/0x1ff0 kernel/locking/lockdep.c:5012
 lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
 down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:138
 __down_trylock_console_sem+0x105/0x250 kernel/printk/printk.c:239
 console_trylock kernel/printk/printk.c:2575 [inline]
 console_trylock_spinning+0x8a/0x3f0 kernel/printk/printk.c:1867
 vprintk_emit+0xa6/0x150 kernel/printk/printk.c:2273
 _printk+0xd1/0x120 kernel/printk/printk.c:2299
 report_bug+0x1e5/0x2e0 lib/bug.c:195
 handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:239
 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:259
 asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:604
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 cb c6 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b4 c6 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000006b80 EFLAGS: 00010046
RAX: ffffffff81aaacec RBX: 0000000000000000 RCX: ffff888076ed1dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aaabfd R09: fffffbfff2131021
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000008 R14: 0000000000000000 R15: ffffc90000006be8
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline]
 bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
 bpf_prog_02073d59a3c0f06f+0x3d/0xe70
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
 bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1916
 trace_timer_start include/trace/events/timer.h:52 [inline]
 enqueue_timer+0x3ae/0x540 kernel/time/timer.c:586
 internal_add_timer kernel/time/timer.c:611 [inline]
 __mod_timer+0xa60/0xeb0 kernel/time/timer.c:1062
 sk_reset_timer+0x1f/0xb0 net/core/sock.c:3136
 tcp_ack_snd_check net/ipv4/tcp_input.c:5628 [inline]
 tcp_rcv_established+0xf01/0x1e20 net/ipv4/tcp_input.c:6053
 tcp_v4_do_rcv+0x423/0x960 net/ipv4/tcp_ipv4.c:1731
 tcp_v4_rcv+0x2740/0x2d80 net/ipv4/tcp_ipv4.c:2143
 ip_protocol_deliver_rcu+0x381/0x730 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1db/0x320 net/ipv4/ip_input.c:231
 NF_HOOK+0x364/0x410 include/linux/netfilter.h:302
 dst_input include/net/dst.h:453 [inline]
 ip_sublist_rcv_finish net/ipv4/ip_input.c:577 [inline]
 ip_list_rcv_finish net/ipv4/ip_input.c:628 [inline]
 ip_sublist_rcv+0xb0f/0xe50 net/ipv4/ip_input.c:636
 ip_list_rcv+0x422/0x470 net/ipv4/ip_input.c:671
 __netif_receive_skb_list_ptype net/core/dev.c:5536 [inline]
 __netif_receive_skb_list_core+0x6b1/0x890 net/core/dev.c:5584
 __netif_receive_skb_list net/core/dev.c:5636 [inline]
 netif_receive_skb_list_internal+0x9ed/0xdf0 net/core/dev.c:5727
 gro_normal_list net/core/dev.c:5881 [inline]
 napi_complete_done+0x352/0x820 net/core/dev.c:6619
 virtqueue_napi_complete drivers/net/virtio_net.c:357 [inline]
 virtnet_poll+0xbd1/0x1260 drivers/net/virtio_net.c:1592
 __napi_poll+0xc7/0x440 net/core/dev.c:7043
 napi_poll net/core/dev.c:7110 [inline]
 net_rx_action+0x617/0xda0 net/core/dev.c:7200
 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
 __do_softirq kernel/softirq.c:592 [inline]
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
 common_interrupt+0xb3/0xd0 arch/x86/kernel/irq.c:240
 </IRQ>
 <TASK>
 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:172 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:227 [inline]
RIP: 0010:__sanitizer_cov_trace_switch+0x5d/0xe0 kernel/kcov.c:329
Code: 92 00 00 00 4c 8b 04 c5 20 ea ae 8a 4c 8b 4c 24 20 65 4c 8b 1d 74 f7 81 7e 31 d2 eb 08 48 ff c2 49 39 d2 74 71 4c 8b 74 d6 10 <65> 8b 05 64 f7 81 7e 25 00 01 ff 00 74 11 3d 00 01 00 00 75 de 41
RSP: 0018:ffffc9000324fb98 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 000000000000008b
RDX: 0000000000000008 RSI: ffffffff8cb3bab0 RDI: 0000000000000001
RBP: ffffc9000324fe08 R08: 0000000000000005 R09: ffffffff817392af
R10: 000000000000000d R11: ffff888076ed1dc0 R12: 1ffff92000649fb4
R13: 0000000000000001 R14: 0000000000000009 R15: 0000000000000001
 do_futex+0x13f/0x1810 kernel/futex/core.c:3966
 __do_sys_futex kernel/futex/core.c:4059 [inline]
 __se_sys_futex+0x407/0x490 kernel/futex/core.c:4040
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f07e0912ed9
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:00007f07de7890e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f07e0ad8fa8 RCX: 00007f07e0912ed9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f07e0ad8fac
RBP: 00007f07e0ad8fa0 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000246 R12: 00007f07e0ad8fac
R13: 0000000000000000 R14: 00007fffc7c6ef30 R15: 00007fffc7c6f018
 </TASK>
WARNING: CPU: 0 PID: 4544 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 0 PID: 4544 Comm: syz.0.126 Not tainted 5.15.173-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 cb c6 d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b4 c6 d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000006b80 EFLAGS: 00010046
RAX: ffffffff81aaacec RBX: 0000000000000000 RCX: ffff888076ed1dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aaabfd R09: fffffbfff2131021
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000008 R14: 0000000000000000 R15: ffffc90000006be8
FS:  00007f07de7896c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007b89a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
 ____bpf_probe_read_user kernel/trace/bpf_trace.c:166 [inline]
 bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
 bpf_prog_02073d59a3c0f06f+0x3d/0xe70
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
 bpf_trace_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1916
 trace_timer_start include/trace/events/timer.h:52 [inline]
 enqueue_timer+0x3ae/0x540 kernel/time/timer.c:586
 internal_add_timer kernel/time/timer.c:611 [inline]
 __mod_timer+0xa60/0xeb0 kernel/time/timer.c:1062
 sk_reset_timer+0x1f/0xb0 net/core/sock.c:3136
 tcp_ack_snd_check net/ipv4/tcp_input.c:5628 [inline]
 tcp_rcv_established+0xf01/0x1e20 net/ipv4/tcp_input.c:6053
 tcp_v4_do_rcv+0x423/0x960 net/ipv4/tcp_ipv4.c:1731
 tcp_v4_rcv+0x2740/0x2d80 net/ipv4/tcp_ipv4.c:2143
 ip_protocol_deliver_rcu+0x381/0x730 net/ipv4/ip_input.c:204
 ip_local_deliver_finish+0x1db/0x320 net/ipv4/ip_input.c:231
 NF_HOOK+0x364/0x410 include/linux/netfilter.h:302
 dst_input include/net/dst.h:453 [inline]
 ip_sublist_rcv_finish net/ipv4/ip_input.c:577 [inline]
 ip_list_rcv_finish net/ipv4/ip_input.c:628 [inline]
 ip_sublist_rcv+0xb0f/0xe50 net/ipv4/ip_input.c:636
 ip_list_rcv+0x422/0x470 net/ipv4/ip_input.c:671
 __netif_receive_skb_list_ptype net/core/dev.c:5536 [inline]
 __netif_receive_skb_list_core+0x6b1/0x890 net/core/dev.c:5584
 __netif_receive_skb_list net/core/dev.c:5636 [inline]
 netif_receive_skb_list_internal+0x9ed/0xdf0 net/core/dev.c:5727
 gro_normal_list net/core/dev.c:5881 [inline]
 napi_complete_done+0x352/0x820 net/core/dev.c:6619
 virtqueue_napi_complete drivers/net/virtio_net.c:357 [inline]
 virtnet_poll+0xbd1/0x1260 drivers/net/virtio_net.c:1592
 __napi_poll+0xc7/0x440 net/core/dev.c:7043
 napi_poll net/core/dev.c:7110 [inline]
 net_rx_action+0x617/0xda0 net/core/dev.c:7200
 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
 __do_softirq kernel/softirq.c:592 [inline]
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
 common_interrupt+0xb3/0xd0 arch/x86/kernel/irq.c:240
 </IRQ>
 <TASK>
 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:172 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:227 [inline]
RIP: 0010:__sanitizer_cov_trace_switch+0x5d/0xe0 kernel/kcov.c:329
Code: 92 00 00 00 4c 8b 04 c5 20 ea ae 8a 4c 8b 4c 24 20 65 4c 8b 1d 74 f7 81 7e 31 d2 eb 08 48 ff c2 49 39 d2 74 71 4c 8b 74 d6 10 <65> 8b 05 64 f7 81 7e 25 00 01 ff 00 74 11 3d 00 01 00 00 75 de 41
RSP: 0018:ffffc9000324fb98 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 000000000000008b
RDX: 0000000000000008 RSI: ffffffff8cb3bab0 RDI: 0000000000000001
RBP: ffffc9000324fe08 R08: 0000000000000005 R09: ffffffff817392af
R10: 000000000000000d R11: ffff888076ed1dc0 R12: 1ffff92000649fb4
R13: 0000000000000001 R14: 0000000000000009 R15: 0000000000000001
 do_futex+0x13f/0x1810 kernel/futex/core.c:3966
 __do_sys_futex kernel/futex/core.c:4059 [inline]
 __se_sys_futex+0x407/0x490 kernel/futex/core.c:4040
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f07e0912ed9
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:00007f07de7890e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f07e0ad8fa8 RCX: 00007f07e0912ed9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f07e0ad8fac
RBP: 00007f07e0ad8fa0 R08: 0000000000000010 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000246 R12: 00007f07e0ad8fac
R13: 0000000000000000 R14: 00007fffc7c6ef30 R15: 00007fffc7c6f018
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	00 00                	add    %al,(%rax)
   2:	4c 8b 04 c5 20 ea ae 	mov    -0x755115e0(,%rax,8),%r8
   9:	8a
   a:	4c 8b 4c 24 20       	mov    0x20(%rsp),%r9
   f:	65 4c 8b 1d 74 f7 81 	mov    %gs:0x7e81f774(%rip),%r11        # 0x7e81f78b
  16:	7e
  17:	31 d2                	xor    %edx,%edx
  19:	eb 08                	jmp    0x23
  1b:	48 ff c2             	inc    %rdx
  1e:	49 39 d2             	cmp    %rdx,%r10
  21:	74 71                	je     0x94
  23:	4c 8b 74 d6 10       	mov    0x10(%rsi,%rdx,8),%r14
* 28:	65 8b 05 64 f7 81 7e 	mov    %gs:0x7e81f764(%rip),%eax        # 0x7e81f793 <-- trapping instruction
  2f:	25 00 01 ff 00       	and    $0xff0100,%eax
  34:	74 11                	je     0x47
  36:	3d 00 01 00 00       	cmp    $0x100,%eax
  3b:	75 de                	jne    0x1b
  3d:	41                   	rex.B