rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=091c/1/0x4000000000000000 softirq=41332/41334 fqs=1
rcu: 	(detected by 0, t=10506 jiffies, g=48141, q=156 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12227 Comm: syz-executor.1 Not tainted 6.4.0-syzkaller-08881-g533925cb7604 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:84 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:127 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:158 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:177 [inline]
RIP: 0010:kasan_check_range+0x79/0x290 mm/kasan/generic.c:186
Code: 4d 89 c1 49 c1 e9 03 49 be 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 <4c> 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 0f 85 c5 01 00 00 49 ff c3
RSP: 0018:ffffc900001e0830 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 1ffffffff20b0261 RCX: ffffffff816b406d
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90581308
RBP: 0000000000000001 R08: ffffffff9058130f R09: 1ffffffff20b0261
R10: dffffc0000000000 R11: fffffbfff20b0261 R12: ffff888081b41dc0
R13: 000000000000006b R14: dffffc0000000001 R15: fffffbfff20b0262
FS:  0000555557519400(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa9ab3ad988 CR3: 000000002b558000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class kernel/locking/lockdep.c:228 [inline]
 check_wait_context kernel/locking/lockdep.c:4780 [inline]
 __lock_acquire+0x58d/0x7f70 kernel/locking/lockdep.c:5094
 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5761
 __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:1692 [inline]
 __hrtimer_run_queues+0x66c/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:__syscall_enter_from_user_work kernel/entry/common.c:91 [inline]
RIP: 0010:syscall_enter_from_user_mode+0x3b/0x230 kernel/entry/common.c:112
Code: 49 89 fe 48 8b 7c 24 30 e8 e2 fa ff ff 0f 1f 44 00 00 0f 1f 44 00 00 e8 53 60 da f6 e8 0e 60 da f6 fb 65 4c 8b 3d e5 7d 4b 75 <49> 8b 6f 08 40 f6 c5 3f 0f 84 b5 00 00 00 40 f6 c5 20 74 17 4c 89
RSP: 0018:ffffc90007b7fef8 EFLAGS: 00000282
RAX: 77f8e603193a4600 RBX: 0000000000000003 RCX: ffffffff91d79203
RDX: dffffc0000000000 RSI: ffffffff8b0a8ec0 RDI: ffffffff8b588b00
RBP: ffffc90007b7ff48 R08: ffffffff8e7735af R09: 1ffffffff1cee6b5
R10: dffffc0000000000 R11: fffffbfff1cee6b6 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc90007b7ff58 R15: ffff888081b41dc0
 do_syscall_64+0x22/0xc0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe9af63e12b
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffe951bfa10 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000019 RCX: 00007fe9af63e12b
RDX: ffffffffffffffb8 RSI: ffffffffffffffff RDI: 0000000000000018
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fe9af200000
R10: 00007fe9af200340 R11: 0000000000000293 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe951bfaf0
 </TASK>
rcu: rcu_preempt kthread starved for 10500 jiffies! g48141 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:25288 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1873/0x48f0 kernel/sched/core.c:6710
 schedule+0xc3/0x180 kernel/sched/core.c:6786
 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: 47 Comm: kworker/u4:3 Not tainted 6.4.0-syzkaller-08881-g533925cb7604 #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 8e 16 0b 00 41 83 e5 01 4c 8b 6c 24 60 75 07 e8 ce 12 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:ffffc90000b877a0 EFLAGS: 00000293
RAX: ffffffff8180c767 RBX: 1ffff1101732857d RCX: ffff888014a69dc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000b879a0 R08: ffffffff8180c732 R09: 1ffffffff20b0260
R10: dffffc0000000000 R11: fffffbfff20b0261 R12: ffff8880b9942be8
R13: ffff8880b983d0c8 R14: ffff8880b983d0c0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa9abf26718 CR3: 000000000cf30000 CR4: 00000000003506f0
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: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+0x92c/0x12c0 kernel/workqueue.c:2597
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
 kthread+0x2b8/0x350 kernel/kthread.c:389
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>