rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=e03c/1/0x4000000000000000 softirq=57111/57112 fqs=1
rcu: (detected by 0, t=10502 jiffies, g=51025, q=420 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5835 Comm: kworker/1:3 Not tainted 6.14.0-rc7-syzkaller-00205-g586de92313fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: usb_hub_wq hub_event
RIP: 0010:lock_is_held_type+0x103/0x150 kernel/locking/lockdep.c:5928
Code: 8b e8 91 16 00 00 b8 ff ff ff ff 65 0f c1 05 3c 05 ab 74 83 f8 01 75 2d 9c 58 f6 c4 02 75 43 48 f7 04 24 00 02 00 00 74 01 fb <48> 83 c4 08 44 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc
RSP: 0018:ffffc90000a28df0 EFLAGS: 00000046
RAX: 0000000000000046 RBX: ffff888025fd5438 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b6cff80 RDI: ffffffff8bd36a20
RBP: ffff8880b872c698 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000006 R12: ffff888025fd4880
R13: 0000000000000001 R14: 00000000ffffffff R15: 0000000000000005
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2d1a290f98 CR3: 0000000027ab0000 CR4: 00000000003526f0
DR0: fffffffffffffffc DR1: 0000000000000006 DR2: 0200000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:249 [inline]
__run_hrtimer kernel/time/hrtimer.c:1767 [inline]
__hrtimer_run_queues+0x8d0/0xae0 kernel/time/hrtimer.c:1865
hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1927
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x9a4/0xc60 kernel/printk/printk.c:3211
Code: 00 e8 90 01 28 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 5e 44 20 00 48 85 db 0f 85 55 01 00 00 e8 20 49 20 00 fb 4c 89 e0 <48> c1 e8 03 42 80 3c 38 00 0f 84 11 ff ff ff 4c 89 e7 e8 b5 61 83
RSP: 0018:ffffc90002e7f428 EFLAGS: 00000287
RAX: ffffffff8eead078 RBX: 0000000000000000 RCX: ffffc90019f3f000
RDX: 0000000000100000 RSI: ffffffff8199a750 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000006 R12: ffffffff8eead078
R13: ffffffff8eead020 R14: ffffc90002e7f4b8 R15: dffffc0000000000
__console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
dev_vprintk_emit drivers/base/core.c:4891 [inline]
dev_printk_emit+0xfb/0x140 drivers/base/core.c:4902
__dev_printk+0xf5/0x270 drivers/base/core.c:4914
_dev_info+0xe5/0x120 drivers/base/core.c:4960
announce_device drivers/usb/core/hub.c:2381 [inline]
usb_new_device+0x86c/0x1a20 drivers/usb/core/hub.c:2644
hub_port_connect drivers/usb/core/hub.c:5533 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x2d9a/0x4e10 drivers/usb/core/hub.c:5915
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3400
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: rcu_preempt kthread starved for 10495 jiffies! g51025 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:28344 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5378 [inline]
__schedule+0xf43/0x5890 kernel/sched/core.c:6765
__schedule_loop kernel/sched/core.c:6842 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6857
schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2024
rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2226
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 19089 Comm: syz.1.2151 Not tainted 6.14.0-rc7-syzkaller-00205-g586de92313fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x4c6/0x12c0 kernel/smp.c:885
Code: 0c 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 fc 4c 89 fd 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 ac 0e 0c 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 e8 0b 00 00 8b 43 08 31
RSP: 0018:ffffc900033ef860 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b8744a80 RCX: ffffffff81ade1ea
RDX: ffff888048d04880 RSI: ffffffff81ade1c4 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000005 R12: ffffed10170e8951
R13: 0000000000000001 R14: ffff8880b863fe80 R15: ffff8880b8744a88
FS: 00005555678bf500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3ebf84 CR3: 0000000031fb4000 CR4: 00000000003526f0
DR0: fffffffffffffffc DR1: 0000000000000006 DR2: 0200000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1052
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2118 [inline]
text_poke_bp_batch+0x22b/0x760 arch/x86/kernel/alternative.c:2328
text_poke_bp+0xa3/0xd0 arch/x86/kernel/alternative.c:2555
__static_call_transform+0x34d/0x770 arch/x86/kernel/static_call.c:111
arch_static_call_transform+0x5d/0xb0 arch/x86/kernel/static_call.c:163
__static_call_update+0xee/0x660 kernel/static_call_inline.c:147
tracepoint_update_call kernel/tracepoint.c:271 [inline]
tracepoint_remove_func kernel/tracepoint.c:394 [inline]
tracepoint_probe_unregister+0xb0c/0xd70 kernel/tracepoint.c:504
bpf_raw_tp_link_release+0x35/0x70 kernel/bpf/syscall.c:3615
bpf_link_free+0xe9/0x390 kernel/bpf/syscall.c:3137
bpf_link_put_direct kernel/bpf/syscall.c:3180 [inline]
bpf_link_release+0x5d/0x80 kernel/bpf/syscall.c:3187
__fput+0x3ff/0xb70 fs/file_table.c:464
task_work_run+0x14e/0x250 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6c5cf8d169
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:00007ffe157c1cb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f6c5d1a7ba0 RCX: 00007f6c5cf8d169
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f6c5d1a7ba0 R08: 0000000000000188 R09: 00000017157c1faf
R10: 00007f6c5d1a7ac0 R11: 0000000000000246 R12: 000000000007e09b
R13: 00007f6c5d1a6160 R14: ffffffffffffffff R15: 00007ffe157c1dd0
watchdog: BUG: soft lockup - CPU#0 stuck for 262s! [syz.1.2151:19089]
Modules linked in:
irq event stamp: 858229
hardirqs last enabled at (858228): [] kcov_remote_start+0x3cf/0x6e0 kernel/kcov.c:933
hardirqs last disabled at (858229): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049
softirqs last enabled at (858218): [] softirq_handle_end kernel/softirq.c:407 [inline]
softirqs last enabled at (858218): [] handle_softirqs+0x5bb/0x8f0 kernel/softirq.c:589
softirqs last disabled at (858221): [] __do_softirq kernel/softirq.c:595 [inline]
softirqs last disabled at (858221): [] invoke_softirq kernel/softirq.c:435 [inline]
softirqs last disabled at (858221): [] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662
CPU: 0 UID: 0 PID: 19089 Comm: syz.1.2151 Not tainted 6.14.0-rc7-syzkaller-00205-g586de92313fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:80 [inline]
RIP: 0010:__orc_find+0x86/0xf0 arch/x86/kernel/unwind_orc.c:102
Code: f2 48 d1 fa 48 8d 5c 95 00 48 89 da 48 c1 ea 03 0f b6 34 0a 48 89 da 83 e2 07 83 c2 03 40 38 f2 7c 05 40 84 f6 75 4b 48 63 13 <48> 01 da 49 39 d5 73 af 4c 8d 63 fc 49 39 ec 73 b2 4d 29 f7 49 c1
RSP: 0018:ffffc90000007098 EFLAGS: 00000246
RAX: ffffffff9103399c RBX: ffffffff907c15e0 RCX: dffffc0000000000
RDX: fffffffff19699b0 RSI: 0000000000000000 RDI: ffffffff907c15dc
RBP: ffffffff907c15dc R08: ffffffff910339ae R09: ffffffff9103fa0c
R10: ffffc90000007148 R11: 00000000000112af R12: ffffffff907c15e4
R13: ffffffff8212af4b R14: ffffffff907c15dc R15: ffffffff907c15dc
FS: 00005555678bf500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3ebf84 CR3: 0000000031fb4000 CR4: 00000000003526f0
DR0: fffffffffffffffc DR1: 0000000000000006 DR2: 0200000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
unwind_next_frame+0x2be/0x20c0 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0x95/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4294 [inline]
__kmalloc_noprof+0x21c/0x510 mm/slub.c:4306
kmalloc_noprof include/linux/slab.h:905 [inline]
kzalloc_noprof include/linux/slab.h:1037 [inline]
cfg80211_inform_single_bss_data+0x543/0x1df0 net/wireless/scan.c:2339
cfg80211_inform_bss_data+0x205/0x3ba0 net/wireless/scan.c:3222
cfg80211_inform_bss_frame_data+0x272/0x7a0 net/wireless/scan.c:3317
ieee80211_bss_info_update+0x311/0xab0 net/mac80211/scan.c:226
ieee80211_scan_rx+0x474/0xac0 net/mac80211/scan.c:340
__ieee80211_rx_handle_packet net/mac80211/rx.c:5246 [inline]
ieee80211_rx_list+0x1bd7/0x2970 net/mac80211/rx.c:5483
ieee80211_rx_napi+0xdd/0x400 net/mac80211/rx.c:5506
ieee80211_rx include/net/mac80211.h:5172 [inline]
ieee80211_handle_queued_frames+0xd5/0x130 net/mac80211/main.c:441
tasklet_action_common+0x251/0x3f0 kernel/softirq.c:811
handle_softirqs+0x213/0x8f0 kernel/softirq.c:561
__do_softirq kernel/softirq.c:595 [inline]
invoke_softirq kernel/softirq.c:435 [inline]
__irq_exit_rcu+0x109/0x170 kernel/softirq.c:662
irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x4cb/0x12c0 kernel/smp.c:885
Code: 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 fc 4c 89 fd 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 ac 0e 0c 00 f3 90 41 0f b6 04 24 <40> 38 c5 7c 08 84 c0 0f 85 e8 0b 00 00 8b 43 08 31 ff 83 e0 01 41
RSP: 0018:ffffc900033ef860 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b8744a80 RCX: ffffffff81ade1ea
RDX: ffff888048d04880 RSI: ffffffff81ade1c4 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000005 R12: ffffed10170e8951
R13: 0000000000000001 R14: ffff8880b863fe80 R15: ffff8880b8744a88
on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1052
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2118 [inline]
text_poke_bp_batch+0x22b/0x760 arch/x86/kernel/alternative.c:2328
text_poke_bp+0xa3/0xd0 arch/x86/kernel/alternative.c:2555
__static_call_transform+0x34d/0x770 arch/x86/kernel/static_call.c:111
arch_static_call_transform+0x5d/0xb0 arch/x86/kernel/static_call.c:163
__static_call_update+0xee/0x660 kernel/static_call_inline.c:147
tracepoint_update_call kernel/tracepoint.c:271 [inline]
tracepoint_remove_func kernel/tracepoint.c:394 [inline]
tracepoint_probe_unregister+0xb0c/0xd70 kernel/tracepoint.c:504
bpf_raw_tp_link_release+0x35/0x70 kernel/bpf/syscall.c:3615
bpf_link_free+0xe9/0x390 kernel/bpf/syscall.c:3137
bpf_link_put_direct kernel/bpf/syscall.c:3180 [inline]
bpf_link_release+0x5d/0x80 kernel/bpf/syscall.c:3187
__fput+0x3ff/0xb70 fs/file_table.c:464
task_work_run+0x14e/0x250 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6c5cf8d169
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:00007ffe157c1cb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f6c5d1a7ba0 RCX: 00007f6c5cf8d169
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f6c5d1a7ba0 R08: 0000000000000188 R09: 00000017157c1faf
R10: 00007f6c5d1a7ac0 R11: 0000000000000246 R12: 000000000007e09b
R13: 00007f6c5d1a6160 R14: ffffffffffffffff R15: 00007ffe157c1dd0
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5835 Comm: kworker/1:3 Not tainted 6.14.0-rc7-syzkaller-00205-g586de92313fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: usb_hub_wq hub_event
RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:227 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:239 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:hlock_class+0x4e/0x130 kernel/locking/lockdep.c:230
Code: 8e da 00 00 00 0f b7 5b 20 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 c0 6c ec 96 e8 52 4a 87 00 <48> 0f a3 1d 6a a6 56 15 73 13 48 69 c3 c8 00 00 00 5b 48 05 e0 70
RSP: 0018:ffffc90000a28aa0 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000070 RCX: ffffffff8195c64e
RDX: fffffbfff2dd8d9a RSI: 0000000000000008 RDI: ffffffff96ec6cc8
RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff2dd8d99
R10: ffffffff96ec6ccf R11: 0000000000000005 R12: ffffed1004bfaa6d
R13: ffff888025fd4880 R14: 0000000000000002 R15: 0000000000000005
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2d1a290f98 CR3: 0000000027ab0000 CR4: 00000000003526f0
DR0: fffffffffffffffc DR1: 0000000000000006 DR2: 0200000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
check_wait_context kernel/locking/lockdep.c:4877 [inline]
__lock_acquire+0x623/0x3c40 kernel/locking/lockdep.c:5178
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5851
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
debug_object_activate+0x149/0x4a0 lib/debugobjects.c:818
debug_hrtimer_activate kernel/time/hrtimer.c:455 [inline]
debug_activate kernel/time/hrtimer.c:496 [inline]
enqueue_hrtimer+0x25/0x3c0 kernel/time/hrtimer.c:1100
__run_hrtimer kernel/time/hrtimer.c:1818 [inline]
__hrtimer_run_queues+0x903/0xae0 kernel/time/hrtimer.c:1865
hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1927
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x9a4/0xc60 kernel/printk/printk.c:3211
Code: 00 e8 90 01 28 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 5e 44 20 00 48 85 db 0f 85 55 01 00 00 e8 20 49 20 00 fb 4c 89 e0 <48> c1 e8 03 42 80 3c 38 00 0f 84 11 ff ff ff 4c 89 e7 e8 b5 61 83
RSP: 0018:ffffc90002e7f428 EFLAGS: 00000287
RAX: ffffffff8eead078 RBX: 0000000000000000 RCX: ffffc90019f3f000
RDX: 0000000000100000 RSI: ffffffff8199a750 RDI: 0000000000000007
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000006 R12: ffffffff8eead078
R13: ffffffff8eead020 R14: ffffc90002e7f4b8 R15: dffffc0000000000
__console_flush_and_unlock kernel/printk/printk.c:3269 [inline]
console_unlock+0xd9/0x210 kernel/printk/printk.c:3309
vprintk_emit+0x424/0x6f0 kernel/printk/printk.c:2432
dev_vprintk_emit drivers/base/core.c:4891 [inline]
dev_printk_emit+0xfb/0x140 drivers/base/core.c:4902
__dev_printk+0xf5/0x270 drivers/base/core.c:4914
_dev_info+0xe5/0x120 drivers/base/core.c:4960
announce_device drivers/usb/core/hub.c:2381 [inline]
usb_new_device+0x86c/0x1a20 drivers/usb/core/hub.c:2644
hub_port_connect drivers/usb/core/hub.c:5533 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
port_event drivers/usb/core/hub.c:5833 [inline]
hub_event+0x2d9a/0x4e10 drivers/usb/core/hub.c:5915
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3400
kthread+0x3af/0x750 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244