rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (3 ticks this GP) idle=6e7c/1/0x4000000000000000 softirq=8716/8716 fqs=0
rcu: 	(detected by 0, t=10506 jiffies, g=10425, q=780 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1244 Comm: aoe_tx0 Not tainted 6.10.0-rc6-syzkaller-00069-g795c58e4c7fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:__lock_acquire+0xf21/0x1fd0 kernel/locking/lockdep.c:5133
Code: 00 8b 1b 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 80 75 fa 92 be 08 00 00 00 e8 57 62 89 00 48 0f a3 1d af f8 87 11 <0f> 83 56 02 00 00 48 69 c3 c8 00 00 00 48 8d 98 80 d4 c8 92 48 bf
RSP: 0018:ffffc90000a18a70 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000021 RCX: ffffffff81727cc9
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92fa7580
RBP: d6bf87c490213bdc R08: ffffffff92fa7587 R09: 1ffffffff25f4eb0
R10: dffffc0000000000 R11: fffffbfff25f4eb1 R12: ffff888023173c00
R13: ffff888023173c00 R14: 0000000000000001 R15: ffff888023173c00
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f404b1ff000 CR3: 000000005d822000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1693 [inline]
 __hrtimer_run_queues+0x670/0xd50 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+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 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 7e 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 <e8> 03 d8 d4 f5 65 8b 05 74 0f 73 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc90004a07600 EFLAGS: 00000206
RAX: 6287586ae3f6e900 RBX: 1ffff92000940ec4 RCX: ffffffff8172da0a
RDX: dffffc0000000000 RSI: ffffffff8bcabb40 RDI: 0000000000000001
RBP: ffffc90004a07688 R08: ffffffff92fa7647 R09: 1ffffffff25f4ec8
R10: dffffc0000000000 R11: fffffbfff25f4ec9 R12: dffffc0000000000
R13: 1ffff92000940ec0 R14: ffffc90004a07620 R15: 0000000000000246
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 get_partial_node+0x248/0x280 mm/slub.c:2710
 get_partial mm/slub.c:2790 [inline]
 ___slab_alloc+0xc17/0x14b0 mm/slub.c:3647
 __slab_alloc+0x58/0xa0 mm/slub.c:3757
 __slab_alloc_node mm/slub.c:3810 [inline]
 slab_alloc_node mm/slub.c:3990 [inline]
 kmem_cache_alloc_noprof+0x1c1/0x2a0 mm/slub.c:4009
 skb_clone+0x20c/0x390 net/core/skbuff.c:2052
 dev_queue_xmit_nit+0x419/0xc10 net/core/dev.c:2311
 xmit_one net/core/dev.c:3574 [inline]
 dev_hard_start_xmit+0x15f/0x7e0 net/core/dev.c:3594
 sch_direct_xmit+0x2b6/0x5f0 net/sched/sch_generic.c:343
 __dev_xmit_skb net/core/dev.c:3807 [inline]
 __dev_queue_xmit+0x1a24/0x3d30 net/core/dev.c:4359
 dev_queue_xmit include/linux/netdevice.h:3095 [inline]
 tx+0x6b/0x180 drivers/block/aoe/aoenet.c:62
 kthread+0x23c/0x450 drivers/block/aoe/aoecmd.c:1229
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g10425 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=4751
rcu: rcu_preempt kthread starved for 10506 jiffies! g10425 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
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:I stack:25584 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>