rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=12537, q=831 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294958130-4294947628), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g12537 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R  running task     stack:26112 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x18af/0x4bd0 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6782
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 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: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.12.0-rc4-syzkaller-00047-gc2ee9f594da8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:lock_acquire+0x104/0x550 kernel/locking/lockdep.c:5798
Code: ac 0e 73 16 e8 2d 7f 0a 00 84 c0 75 0d 80 3d dc 73 96 0e 00 0f 84 f9 02 00 00 48 c7 c0 3c 31 1d 90 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 ff 02 00 00 83 3d 89 ea ac 0e 00 0f 84 42 01 00 00 65
RSP: 0018:ffffc90000a18b20 EFLAGS: 00000017
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81704674
RDX: 0000000000000000 RSI: ffffffff8c610280 RDI: ffffffff8c610240
RBP: ffffc90000a18c78 R08: ffffffff901cfeef R09: 1ffffffff2039fdd
R10: dffffc0000000000 R11: fffffbfff2039fde R12: 1ffff9200014316c
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88805dd86360
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2ad66e CR3: 0000000030756000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 advance_sched+0xa1e/0xca0 net/sched/sch_taprio.c:985
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x112/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </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 de 77 2e f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 63 08 93 f5 65 8b 05 34 b2 33 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc900001e7760 EFLAGS: 00000206
RAX: 7e4264bc13fbf800 RBX: 1ffff9200003cef0 RCX: ffffffff9a3d0903
RDX: dffffc0000000000 RSI: ffffffff8c0acb40 RDI: 0000000000000001
RBP: ffffc900001e77f0 R08: ffffffff901cfeef R09: 1ffffffff2039fdd
R10: dffffc0000000000 R11: fffffbfff2039fde R12: dffffc0000000000
R13: 1ffff9200003ceec R14: ffffc900001e7780 R15: 0000000000000246
 __debug_check_no_obj_freed lib/debugobjects.c:998 [inline]
 debug_check_no_obj_freed+0x561/0x580 lib/debugobjects.c:1019
 slab_free_hook mm/slub.c:2273 [inline]
 slab_free mm/slub.c:4579 [inline]
 kfree+0x11f/0x440 mm/slub.c:4727
 ip_dst_metrics_put include/net/ip.h:539 [inline]
 ip6_dst_destroy+0x87/0x3d0 net/ipv6/route.c:360
 dst_destroy+0xd0/0x360 net/core/dst.c:113
 rcu_do_batch kernel/rcu/tree.c:2567 [inline]
 rcu_core+0xaac/0x17a0 kernel/rcu/tree.c:2823
 handle_softirqs+0x2c7/0x980 kernel/softirq.c:554
 run_ksoftirqd+0xca/0x130 kernel/softirq.c:927
 smpboot_thread_fn+0x546/0xa30 kernel/smpboot.c:164
 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>