rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-....: (8807 ticks this GP) idle=76ec/1/0x4000000000000000 softirq=18373/27057 fqs=11
rcu: hardirqs softirqs csw/system
rcu: number: 3 220 4
rcu: cputime: 16979 4 1040 ==> 18050(ms)
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1):
P5131/1:b..l
rcu: (detected by 0, t=10511 jiffies, g=18913, q=769 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
usb 4-1: pegasus_irq - nonzero urb status received: -71
NMI backtrace for cpu 1
CPU: 1 PID: 783 Comm: kworker/1:2 Not tainted 6.10.0-rc6-syzkaller-00163-g661e504db04c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: events_power_efficient neigh_periodic_work
RIP: 0010:serial8250_console_write+0x1a8/0x1770 drivers/tty/serial/8250/8250_port.c:3352
Code: 89 ff e8 1b 23 55 06 89 c3 31 ff 89 c6 e8 10 8f 5a fc 85 db 74 57 e8 c7 8a 5a fc eb 43 e8 c0 8a 5a fc 4c 89 ff e8 58 24 55 06 <48> 89 84 24 b0 00 00 00 c7 44 24 2c 00 00 00 00 e9 cc 00 00 00 e8
RSP: 0018:ffffc90000a174c0 EFLAGS: 00000046
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000a173a0
RBP: ffffc90000a17690 R08: 0000000000000003 R09: fffff52000142e74
R10: dffffc0000000000 R11: fffff52000142e74 R12: dffffc0000000000
R13: ffffffff8eb21f80 R14: 0000000000000000 R15: ffffffff94accea0
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2820c0 CR3: 000000007cf00000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
console_emit_next_record kernel/printk/printk.c:2913 [inline]
console_flush_all+0x865/0xfd0 kernel/printk/printk.c:2979
console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3048
vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2348
dev_vprintk_emit+0x2ae/0x330 drivers/base/core.c:4909
dev_printk_emit+0xdd/0x120 drivers/base/core.c:4920
_dev_err+0x122/0x170 drivers/base/core.c:4975
pegasus_irq+0x44d/0x5a0 drivers/input/tablet/pegasus_notetaker.c:195
__usb_hcd_giveback_urb+0x42c/0x6e0 drivers/usb/core/hcd.c:1650
dummy_timer+0x830/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1987
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
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 9e 17 6b f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 63 d8 d4 f5 65 8b 05 74 0f 73 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc90000a18580 EFLAGS: 00000206
RAX: fc9ac408a45bab00 RBX: 1ffff920001430b4 RCX: ffffffff8172da6a
RDX: dffffc0000000000 RSI: ffffffff8bcabb40 RDI: 0000000000000001
RBP: ffffc90000a18620 R08: ffffffff92fa766f R09: 1ffffffff25f4ecd
R10: dffffc0000000000 R11: fffffbfff25f4ece R12: dffffc0000000000
R13: 1ffff920001430b0 R14: ffffc90000a185a0 R15: 0000000000000246
stack_depot_save_flags+0x6e4/0x830 lib/stackdepot.c:662
kasan_save_stack mm/kasan/common.c:48 [inline]
kasan_save_track+0x51/0x80 mm/kasan/common.c:68
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
__kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
kasan_slab_free include/linux/kasan.h:184 [inline]
slab_free_hook mm/slub.c:2196 [inline]
slab_free mm/slub.c:4438 [inline]
kmem_cache_free+0x145/0x350 mm/slub.c:4513
kfree_skb include/linux/skbuff.h:1257 [inline]
hsr_forward_skb+0x1e8e/0x2680 net/hsr/hsr_forward.c:696
send_hsr_supervision_frame+0x660/0xce0 net/hsr/hsr_device.c:343
hsr_announce+0x1a9/0x370 net/hsr/hsr_device.c:399
call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792
expire_timers kernel/time/timer.c:1843 [inline]
__run_timers kernel/time/timer.c:2417 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428
run_timer_base kernel/time/timer.c:2437 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
do_softirq+0x11b/0x1e0 kernel/softirq.c:455
__local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382
neigh_periodic_work+0xb35/0xd50 net/core/neighbour.c:1019
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
task:kworker/0:3 state:R
usb 4-1: pegasus_irq - nonzero urb status received: -71
running task stack:20464 pid:5131 tgid:5131 ppid:2 flags:0x00004000
usb 4-1: pegasus_irq - nonzero urb status received: -71
Workqueue: events_power_efficient gc_worker
usb 4-1: pegasus_irq - nonzero urb status received: -71
Call Trace:
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
usb 4-1: pegasus_irq - nonzero urb status received: -71
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
usb 4-1: pegasus_irq - nonzero urb status received: -71
RIP: 0010:seqcount_lockdep_reader_access+0x1e0/0x220 include/linux/seqlock.h:75
usb 4-1: pegasus_irq - nonzero urb status received: -71
Code: f7 4d 85 ed 75 16 e8 8f 2b f6 f7 eb 15 e8 88 2b f6 f7 e8 83 ea e5 01 4d 85 ed 74 ea e8 79 2b f6 f7 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 66 43 c7 44 3c 09 00 00 43 c6 44 3c 0b 00
usb 4-1: pegasus_irq - nonzero urb status received: -71
RSP: 0018:ffffc900044179a0 EFLAGS: 00000293
usb 4-1: pegasus_irq - nonzero urb status received: -71
RAX: ffffffff899ffc37 RBX: 0000000000000000 RCX: ffff8880241e8000
usb 4-1: pegasus_irq - nonzero urb status received: -71
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
usb 4-1: pegasus_irq - nonzero urb status received: -71
RBP: ffffc90004417a50 R08: ffffffff899ffc0d R09: 1ffffffff25f4ec2
usb 4-1: pegasus_irq - nonzero urb status received: -71
R10: dffffc0000000000 R11: fffffbfff25f4ec3 R12: dffffc0000000000
usb 4-1: pegasus_irq - nonzero urb status received: -71
R13: 0000000000000200 R14: 0000000000000046 R15: 1ffff92000882f34
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:345 [inline]
gc_worker+0x316/0x1530 net/netfilter/nf_conntrack_core.c:1488
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
kthread+0x2f0/0x390 kernel/kthread.c:389
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
rcu: rcu_preempt kthread starved for 1874 jiffies! g18913 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
usb 4-1: pegasus_irq - nonzero urb status received: -71
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
usb 4-1: pegasus_irq - nonzero urb status received: -71
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R
usb 4-1: pegasus_irq - nonzero urb status received: -71
running task stack:25584 pid:17 tgid:17 ppid:2 flags:0x00004000
usb 4-1: pegasus_irq - nonzero urb status received: -71
Call Trace:
usb 4-1: pegasus_irq - nonzero urb status received: -71
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
usb 4-1: pegasus_irq - nonzero urb status received: -71
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
kthread+0x2f0/0x390 kernel/kthread.c:389
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - nonzero urb status received: -71
usb 4-1: pegasus_irq - usb_submit_urb failed with result -1