rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10502 jiffies, g=34161, q=186 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10470 (4294986192-4294975722), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10470 jiffies! g34161 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:27192 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5401 [inline]
 __schedule+0x116a/0x5de0 kernel/sched/core.c:6790
 __schedule_loop kernel/sched/core.c:6868 [inline]
 schedule+0xe7/0x3a0 kernel/sched/core.c:6883
 schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1ea/0xb00 kernel/rcu/tree.c:2054
 rcu_gp_kthread+0x270/0x380 kernel/rcu/tree.c:2256
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d4/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </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: 10248 Comm: syz.3.991 Not tainted 6.16.0-rc5-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__lock_acquire+0x75c/0x1c90 kernel/locking/lockdep.c:5089
Code: e9 78 fb ff ff 8b 0c 24 85 c9 0f 85 54 fc ff ff e9 92 fc ff ff 8b 05 63 8f 47 19 85 c0 0f 84 c7 02 00 00 31 c0 e9 dd fa ff ff <c7> 44 24 2c 00 00 00 00 e9 ca fd ff ff e8 02 bf 40 03 85 c0 0f 84
RSP: 0018:ffffc90000a08cf0 EFLAGS: 00000002
RAX: 000000000000006d RBX: 0000000000000001 RCX: 26841444027d0932
RDX: 0000000000000000 RSI: ffff8880283f0b18 RDI: ffff8880283f0000
RBP: ffff8880283f0000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000028 R11: 0000000000000001 R12: ffff8880283f0af0
R13: ffff8880283f0b18 R14: 0000000000000001 R15: 0000000000000002
FS:  00007fd046fb46c0(0000) GS:ffff888124818000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c41e050 CR3: 000000007b264000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 lock_acquire kernel/locking/lockdep.c:5871 [inline]
 lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irq+0x36/0x50 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1765 [inline]
 __hrtimer_run_queues+0x2bc/0xad0 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x108/0x3f0 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch.isra.0+0x22a/0xc10 kernel/sched/core.c:5269
Code: fb 09 00 00 44 8b 05 09 c8 1f 0f 45 85 c0 0f 85 be 01 00 00 4c 89 e7 e8 a4 f6 ff ff e8 0f da 39 00 fb 65 48 8b 1d be a2 46 12 <48> 8d bb 18 16 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc900046ff900 EFLAGS: 00000206
RAX: 00000000000044c5 RBX: ffff8880283f0000 RCX: 0000000000000007
RDX: 0000000000000000 RSI: ffffffff8de3106c RDI: ffffffff8c158660
RBP: ffffc900046ff948 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90a97357 R11: 0000000000000001 R12: ffff8880b853a2c0
R13: ffff88801e2da440 R14: 0000000000000001 R15: ffff8880b853b130
 context_switch kernel/sched/core.c:5404 [inline]
 __schedule+0x1172/0x5de0 kernel/sched/core.c:6790
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7113
 irqentry_exit+0x36/0x90 kernel/entry/common.c:307
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:kasan_check_range+0x12/0x1b0 mm/kasan/generic.c:188
Code: 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 64 01 00 00 48 89 f8 41 54 <44> 0f b6 c2 48 01 f0 55 53 0f 82 d7 00 00 00 eb 0f cc cc cc 48 b8
RSP: 0018:ffffc900046ffbe0 EFLAGS: 00000202
RAX: ffff888034b260c8 RBX: 00000000000000f8 RCX: ffffffff849a34c4
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888034b260c8
RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000100
R10: 00000000000000f8 R11: 0000000000000001 R12: ffffc900046ffcb0
R13: ffff888034b260b0 R14: 00000000000000f8 R15: 0000000000000000
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 tomoyo_check_acl+0x2e4/0x410 security/tomoyo/domain.c:184
 tomoyo_path_number_perm+0x34b/0x580 security/tomoyo/file.c:733
 security_file_ioctl+0x9b/0x240 security/security.c:2913
 __do_sys_ioctl fs/ioctl.c:901 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0xb7/0x210 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd04918e929
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:00007fd046fb4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd0493b6160 RCX: 00007fd04918e929
RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000009
RBP: 00007fd049210b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd0493b6160 R15: 00007ffd42ae8468
 </TASK>