rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=bd24/1/0x4000000000000000 softirq=100507/100515 fqs=0
rcu: 	(detected by 0, t=10503 jiffies, g=140913, q=178 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 23810 Comm: syz-executor.4 Not tainted 6.4.0-syzkaller-01554-g6f612579be9d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:__preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
RIP: 0010:rcu_is_watching+0x6/0xb0 kernel/rcu/tree.c:694
Code: c7 c7 00 da f2 8c 4c 89 f6 e8 36 78 f9 02 e9 2b ff ff ff e8 6c b5 3c 09 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 41 57 <41> 56 53 65 ff 05 08 2c 8f 7e e8 3b cf 3c 09 89 c3 83 f8 08 73 76
RSP: 0018:ffffc900001e08f0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff816bb540
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e565328
RBP: ffffc900001e0a30 R08: dffffc0000000000 R09: fffffbfff1caca66
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200003c12c
R13: ffffffff8439f752 R14: dffffc0000000000 R15: dffffc0000000000
FS:  00007f5f9400d700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000440 CR3: 000000003ad01000 CR4: 00000000003526e0
DR0: 00000000ffff070c DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0xbf/0x9d0 kernel/locking/lockdep.c:5772
 debug_objects_fill_pool+0xc9/0x990 lib/debugobjects.c:616
 debug_object_activate+0x12b/0x530 lib/debugobjects.c:713
 debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline]
 debug_activate kernel/time/hrtimer.c:477 [inline]
 enqueue_hrtimer+0x30/0x310 kernel/time/hrtimer.c:1087
 __run_hrtimer kernel/time/hrtimer.c:1705 [inline]
 __hrtimer_run_queues+0x6c0/0xd10 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1098 [inline]
 __sysvec_apic_timer_interrupt+0x13f/0x480 arch/x86/kernel/apic/apic.c:1115
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1109
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
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 0e 93 28 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 33 cc a3 f6 65 8b 05 94 7f 48 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc900073ff900 EFLAGS: 00000206
RAX: 15b363aad9ab4d00 RBX: 1ffff92000e7ff24 RCX: ffffffff816bff0a
RDX: dffffc0000000000 RSI: ffffffff8aea8ea0 RDI: 0000000000000001
RBP: ffffc900073ff990 R08: dffffc0000000000 R09: fffffbfff206be69
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000e7ff20 R14: ffffc900073ff920 R15: 0000000000000246
 clock_was_set+0x6a1/0x830 kernel/time/hrtimer.c:972
 timekeeping_inject_offset+0x663/0x710 kernel/time/timekeeping.c:1395
 do_adjtimex+0x515/0xab0 kernel/time/timekeeping.c:2444
 do_clock_adjtime kernel/time/posix-timers.c:1159 [inline]
 __do_sys_clock_adjtime kernel/time/posix-timers.c:1171 [inline]
 __se_sys_clock_adjtime kernel/time/posix-timers.c:1162 [inline]
 __x64_sys_clock_adjtime+0x1e0/0x290 kernel/time/posix-timers.c:1162
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5f9328c389
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5f9400d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007f5f933ac050 RCX: 00007f5f9328c389
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f5f932d7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc392e7a7f R14: 00007f5f9400d300 R15: 0000000000022000
 </TASK>
rcu: rcu_preempt kthread starved for 10503 jiffies! g140913 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:25904 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x187b/0x4900 kernel/sched/core.c:6707
 schedule+0xc3/0x180 kernel/sched/core.c:6783
 schedule_timeout+0x1bd/0x310 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x2c6/0x1010 kernel/rcu/tree.c:1609
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1808
 kthread+0x2b8/0x350 kernel/kthread.c:389
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 2844 Comm: kworker/u4:6 Not tainted 6.4.0-syzkaller-01554-g6f612579be9d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:296 [inline]
RIP: 0010:smp_call_function_many_cond+0x1856/0x27d0 kernel/smp.c:835
Code: 03 84 c0 75 7e 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 fe 1a 0b 00 41 83 e5 01 4c 8b 6c 24 60 75 07 e8 3e 17 0b 00 eb 41 f3 90 <48> b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 75 11 41 f7 04 24
RSP: 0018:ffffc9000c0877c0 EFLAGS: 00000293
RAX: ffffffff8180bcc7 RBX: 1ffff11017328585 RCX: ffff8880296dd940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000c0879c0 R08: ffffffff8180bc92 R09: fffffbfff206be69
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b9942c28
R13: ffff8880b983d108 R14: ffff8880b983d100 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d221000 CR3: 000000000cd30000 CR4: 00000000003526f0
DR0: 00000000ffff070c DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1003
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:1938 [inline]
 text_poke_bp_batch+0x2d7/0x960 arch/x86/kernel/alternative.c:2148
 text_poke_flush arch/x86/kernel/alternative.c:2339 [inline]
 text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2346
 arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
 static_key_enable_cpuslocked+0x132/0x250 kernel/jump_label.c:205
 static_key_enable+0x1a/0x20 kernel/jump_label.c:218
 toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:831
 process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2408
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2555
 kthread+0x2b8/0x350 kernel/kthread.c:389
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>