rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=dc24/1/0x4000000000000000 softirq=19233/19233 fqs=1
rcu: 	(detected by 1, t=10505 jiffies, g=14837, q=499 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7862 Comm: syz.1.526 Not tainted 6.12.0-rc7-syzkaller-01681-g38f83a57aa8e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:debug_object_deactivate+0xa/0x390 lib/debugobjects.c:752
Code: ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 <41> 56 41 55 41 54 53 48 83 e4 e0 48 81 ec c0 00 00 00 48 89 34 24
RSP: 0018:ffffc90000007d28 EFLAGS: 00000006
RAX: ffffffff8182758c RBX: ffff88807befd340 RCX: ffff888064355a00
RDX: 0000000000010000 RSI: ffffffff8c0ced00 RDI: ffff88807befd340
RBP: ffffc90000007d30 R08: ffffffff81824324 R09: 0000000000000000
R10: ffff88807befd340 R11: ffffed100f7dfa6b R12: 1ffff110170c593b
R13: dffffc0000000000 R14: ffff88807befd340 R15: ffff8880b862c980
FS:  00007f4b499a36c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd49b337a8c CR3: 00000000314b2000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline]
 debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:484
 __run_hrtimer kernel/time/hrtimer.c:1659 [inline]
 __hrtimer_run_queues+0x305/0xd50 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+0x110/0x420 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 ee 5c 2a f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 23 d8 8e f5 65 8b 05 e4 6d 2f 74 85 c0 74 43 48 c7 04 24 0e 36
RSP: 0018:ffffc9000394ed40 EFLAGS: 00000206
RAX: e724d7c8af475100 RBX: 1ffff92000729dac RCX: ffffffff8170cfaa
RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: 0000000000000001
RBP: ffffc9000394edd0 R08: ffffffff942e2817 R09: 1ffffffff285c502
R10: dffffc0000000000 R11: fffffbfff285c503 R12: dffffc0000000000
R13: 1ffff92000729da8 R14: ffffc9000394ed60 R15: 0000000000000246
 kthread_queue_work+0x110/0x180 kernel/kthread.c:1035
 synchronize_rcu_expedited_queue_work kernel/rcu/tree_exp.h:489 [inline]
 synchronize_rcu_expedited+0x5ad/0x830 kernel/rcu/tree_exp.h:986
 synchronize_rcu+0x11b/0x360 kernel/rcu/tree.c:4095
 lockdep_unregister_key+0x556/0x610 kernel/locking/lockdep.c:6573
 __qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1085
 taprio_attach+0x24e/0x390 net/sched/sch_taprio.c:2149
 qdisc_graft+0x133c/0x1660 net/sched/sch_api.c:1175
 tc_modify_qdisc+0xf47/0x1e40 net/sched/sch_api.c:1793
 rtnetlink_rcv_msg+0x73f/0xcf0 net/core/rtnetlink.c:6920
 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2536
 netlink_unicast_kernel net/netlink/af_netlink.c:1316 [inline]
 netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1342
 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1886
 sock_sendmsg_nosec net/socket.c:729 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:744
 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2609
 ___sys_sendmsg net/socket.c:2663 [inline]
 __sys_sendmsg+0x292/0x380 net/socket.c:2692
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4b48b7e719
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:00007f4b499a3038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f4b48d35f80 RCX: 00007f4b48b7e719
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 000000000000000b
RBP: 00007f4b48bf175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4b48d35f80 R15: 00007fff8b559a08
 </TASK>
rcu: rcu_preempt kthread starved for 10500 jiffies! g14837 f0x0 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:25232 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x184f/0x4c30 kernel/sched/core.c:6693
 __schedule_loop kernel/sched/core.c:6770 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6785
 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+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>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 7836 Comm: syz.3.519 Not tainted 6.12.0-rc7-syzkaller-01681-g38f83a57aa8e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x19f8/0x2ca0 kernel/smp.c:884
Code: 89 e6 83 e6 01 31 ff e8 86 f3 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 31 ef 0b 00 eb 38 f3 90 42 0f b6 04 23 <84> c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 15 ef 0b 00 eb e4 44
RSP: 0018:ffffc9000354f880 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 1ffff110170c8c61 RCX: ffff888025fe9e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000354fa80 R08: ffffffff8188faca R09: 1ffffffff285c500
R10: dffffc0000000000 R11: fffffbfff285c501 R12: dffffc0000000000
R13: ffff8880b8646308 R14: ffff8880b873fa80 R15: 0000000000000000
FS:  000055558f8ad500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000003433e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1051
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:2085 [inline]
 text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2295
 text_poke_flush arch/x86/kernel/alternative.c:2486 [inline]
 text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2493
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 static_key_disable_cpuslocked+0xd2/0x1c0 kernel/jump_label.c:240
 static_key_disable+0x1a/0x20 kernel/jump_label.c:248
 tracepoint_remove_func kernel/tracepoint.c:417 [inline]
 tracepoint_probe_unregister+0x6f2/0x990 kernel/tracepoint.c:551
 bpf_raw_tp_link_release+0x45/0x70 kernel/bpf/syscall.c:3479
 bpf_link_free+0xf5/0x250 kernel/bpf/syscall.c:3005
 bpf_link_put_direct kernel/bpf/syscall.c:3045 [inline]
 bpf_link_release+0x78/0x90 kernel/bpf/syscall.c:3052
 __fput+0x23f/0x880 fs/file_table.c:431
 task_work_run+0x24f/0x310 kernel/task_work.c:239
 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:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6446b7e719
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:00007ffe8f1e6268 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f6446d37a80 RCX: 00007f6446b7e719
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f6446d37a80 R08: 0000000000000006 R09: 00007ffe8f1e655f
R10: 00000000003ffbb4 R11: 0000000000000246 R12: 0000000000019cae
R13: 00007ffe8f1e6370 R14: 0000000000000032 R15: ffffffffffffffff
 </TASK>