rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (1 GPs behind) idle=6904/1/0x4000000000000000 softirq=10485/10486 fqs=5237
rcu: hardirqs softirqs csw/system
rcu: number: 0 0 0
rcu: cputime: 33673 18801 3773 ==> 52510(ms)
rcu: (detected by 1, t=10502 jiffies, g=10817, q=579 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5041 Comm: kworker/0:4 Not tainted 6.5.0-rc2-syzkaller-00214-g284779dbf4e9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:__lock_acquire+0x2ea/0x5de0 kernel/locking/lockdep.c:5079
Code: 02 00 0f 85 89 3e 00 00 48 8b 84 24 50 01 00 00 49 89 45 08 49 8d 45 10 48 89 c2 48 89 44 24 58 48 b8 00 00 00 00 00 fc ff df <48> c1 ea 03 80 3c 02 00 0f 85 6d 3e 00 00 49 8d 45 18 4d 89 55 10
RSP: 0018:ffffc90000007728 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff1100fc368f5
RDX: ffff88807e1b4798 RSI: 0000000000000067 RDI: ffff88807e1b4790
RBP: 0000000000000001 R08: 1ffff1100fc368f0 R09: 0000000000000001
R10: ffffffff923d0d68 R11: 0000000000000001 R12: 0000000000000000
R13: ffff88807e1b4788 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000600 CR3: 000000002c10e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5761 [inline]
lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x50 kernel/locking/spinlock.c:162
debug_object_activate+0x1a4/0x490 lib/debugobjects.c:717
debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline]
debug_activate kernel/time/hrtimer.c:477 [inline]
enqueue_hrtimer+0x23/0x310 kernel/time/hrtimer.c:1087
__run_hrtimer kernel/time/hrtimer.c:1705 [inline]
__hrtimer_run_queues+0xa0a/0xc10 kernel/time/hrtimer.c:1752
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1098 [inline]
__sysvec_apic_timer_interrupt+0x14a/0x430 arch/x86/kernel/apic/apic.c:1115
sysvec_apic_timer_interrupt+0x42/0xc0 arch/x86/kernel/apic/apic.c:1109
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:200
Code: a6 fb 98 02 66 0f 1f 44 00 00 f3 0f 1e fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 0f 1e fa 65 8b 05 cd 48 7d 7e 89 c1 48 8b 34 24 81 e1 00 01 00
RSP: 0018:ffffc90000007d58 EFLAGS: 00000297
RAX: 0000000000000000 RBX: ffff88807acad394 RCX: ffffffff885996f1
RDX: ffff88807e1b3b80 RSI: 0000000000000100 RDI: 0000000000000004
RBP: 000000000000000b R08: 0000000000000004 R09: 000000000000000b
R10: 000000000000000c R11: ffffc90000007ff8 R12: 0000000000000008
R13: ffff888078d14b60 R14: 000000000000000c R15: 0000000000000001
taprio_next_tc_txq net/sched/sch_taprio.c:775 [inline]
taprio_dequeue_tc_priority+0x33d/0x4b0 net/sched/sch_taprio.c:801
taprio_dequeue+0x12e/0x5f0 net/sched/sch_taprio.c:868
dequeue_skb net/sched/sch_generic.c:292 [inline]
qdisc_restart net/sched/sch_generic.c:397 [inline]
__qdisc_run+0x1c4/0x19d0 net/sched/sch_generic.c:415
qdisc_run include/net/pkt_sched.h:125 [inline]
qdisc_run include/net/pkt_sched.h:122 [inline]
net_tx_action+0x71e/0xc80 net/core/dev.c:5049
__do_softirq+0x218/0x965 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:unwind_next_frame+0xb5f/0x2020 arch/x86/kernel/unwind_orc.c:641
Code: 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 d4 13 00 00 4c 89 c8 49 c7 45 58 00 00 00 00 <48> ba 00 00 00 00 00 fc ff df 48 c1 e8 03 0f b6 34 10 49 8d 41 01
RSP: 0018:ffffc90003b3f728 EFLAGS: 00000246
RAX: ffffffff8f33a82a RBX: 0000000000000001 RCX: ffffffff8f33a826
RDX: 1ffff92000767efe RSI: 1ffff92000767efc RDI: ffffc90003b3f7f0
RBP: ffffc90003b3f7e0 R08: ffffc90003b3f7cc R09: ffffffff8f33a82a
R10: ffffc90003b3f798 R11: 0000000000005700 R12: ffffc90003b3f7e8
R13: ffffc90003b3f798 R14: ffffc90003b3ff38 R15: ffffc90003b3ff30
arch_stack_walk+0x8b/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
kasan_set_track+0x25/0x30 mm/kasan/common.c:52
__kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:186 [inline]
slab_post_alloc_hook mm/slab.h:762 [inline]
slab_alloc_node mm/slub.c:3470 [inline]
kmem_cache_alloc_node+0x185/0x3f0 mm/slub.c:3515
__alloc_skb+0x287/0x330 net/core/skbuff.c:634
alloc_skb include/linux/skbuff.h:1289 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
nsim_dev_trap_report_work+0x29e/0xc70 drivers/net/netdevsim/dev.c:850
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597
worker_thread+0x687/0x1110 kernel/workqueue.c:2748
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 4.000 msecs