rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=56057, q=110 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295059135-4295048633), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g56057 f0x2 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:28824 pid:15    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5293 [inline]
 __schedule+0xb8a/0x5450 kernel/sched/core.c:6606
 schedule+0xde/0x1b0 kernel/sched/core.c:6682
 schedule_timeout+0x14e/0x2a0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x190/0x910 kernel/rcu/tree.c:1656
 rcu_gp_kthread+0x23a/0x360 kernel/rcu/tree.c:1855
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 13048 Comm: syz-executor.3 Not tainted 6.2.0-rc6-syzkaller-00262-g95078069c1e7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:__kasan_check_read+0x8/0x20 mm/kasan/shadow.c:31
Code: 0f 0b 48 83 c4 60 5b 5d 41 5c c3 48 05 00 80 00 00 48 89 fb 48 39 c7 0f 82 85 e7 f5 07 eb e1 0f 1f 00 f3 0f 1e fa 48 8b 0c 24 <89> f6 31 d2 e9 7f f7 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
RSP: 0018:ffffc90000007a80 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8162624e
RDX: 1ffff11006996987 RSI: 0000000000000008 RDI: ffffffff91339ac0
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff91339ac7
R10: fffffbfff2267358 R11: 0000000000000000 R12: ffff888034cb4c18
R13: ffff888034cb4140 R14: ffff888034cb4b78 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32125000 CR3: 000000000c48e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class kernel/locking/lockdep.c:227 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3743 [inline]
 validate_chain kernel/locking/lockdep.c:3799 [inline]
 __lock_acquire+0x166e/0x56d0 kernel/locking/lockdep.c:5055
 lock_acquire kernel/locking/lockdep.c:5668 [inline]
 lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x3d/0x60 kernel/locking/spinlock.c:162
 debug_object_activate+0x132/0x3e0 lib/debugobjects.c:665
 debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
 debug_activate kernel/time/hrtimer.c:475 [inline]
 enqueue_hrtimer+0x2b/0x470 kernel/time/hrtimer.c:1084
 __run_hrtimer kernel/time/hrtimer.c:1702 [inline]
 __hrtimer_run_queues+0xc71/0xfb0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x320/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
 __sysvec_apic_timer_interrupt+0x180/0x640 arch/x86/kernel/apic/apic.c:1113
 sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1107
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__rcu_read_unlock+0x0/0x5b0 kernel/rcu/tree_plugin.h:417
Code: 46 90 0e 0b 48 29 d0 48 83 f8 f8 76 06 5b e9 07 e9 ff ff f0 83 44 24 fc 00 5b c3 e8 0a 66 62 00 eb 9d e8 03 66 62 00 eb ca 90 <f3> 0f 1e fa 41 56 41 55 41 54 55 65 48 8b 2c 25 40 ac 03 00 53 48
RSP: 0018:ffffc9000373f690 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff81d4e9db
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffffffff8c136900
RBP: ffffea000122fe40 R08: 0000000000000000 R09: ffffea000122fe47
R10: fffff94000245fc8 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 rcu_read_unlock include/linux/rcupdate.h:796 [inline]
 __folio_memcg_unlock mm/memcontrol.c:2152 [inline]
 folio_memcg_unlock mm/memcontrol.c:2165 [inline]
 unlock_page_memcg+0xe8/0x2d0 mm/memcontrol.c:2170
 page_remove_rmap+0x400/0x1210 mm/rmap.c:1454
 zap_pte_range mm/memory.c:1401 [inline]
 zap_pmd_range mm/memory.c:1525 [inline]
 zap_pud_range mm/memory.c:1554 [inline]
 zap_p4d_range mm/memory.c:1575 [inline]
 unmap_page_range+0x234d/0x3c30 mm/memory.c:1596
 unmap_single_vma+0x190/0x2a0 mm/memory.c:1642
 unmap_vmas+0x226/0x370 mm/memory.c:1681
 exit_mmap+0x18d/0x7b0 mm/mmap.c:3089
 __mmput+0x128/0x4c0 kernel/fork.c:1207
 mmput+0x60/0x70 kernel/fork.c:1229
 exit_mm kernel/exit.c:563 [inline]
 do_exit+0x9ac/0x2950 kernel/exit.c:854
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1012
 get_signal+0x21c3/0x2450 kernel/signal.c:2859
 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:203
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296
 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f73b768c0c9
Code: Unable to access opcode bytes at 0x7f73b768c09f.
RSP: 002b:00007f73b83a2218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f73b77abf88 RCX: 00007f73b768c0c9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f73b77abf8c
RBP: 00007f73b77abf80 R08: 00007ffd477db080 R09: 0000000000000000
R10: 0000000020ffd000 R11: 0000000000000246 R12: 00007f73b77abf8c
R13: 00007ffd4772397f R14: 00007f73b83a2300 R15: 0000000000022000
 </TASK>