rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (2 ticks this GP) idle=6dc4/1/0x4000000000000000 softirq=29276/29276 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=18365, q=612 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5199 Comm: udevd Not tainted 6.15.0-syzkaller-g0ff41df1cb26 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0x58/0x360 kernel/locking/lockdep.c:5829
Code: 8b 05 cc a0 d7 10 48 89 44 24 58 0f 1f 44 00 00 65 8b 05 cf a0 d7 10 83 f8 08 0f 83 b8 01 00 00 89 c0 48 0f a3 05 f8 f5 e0 0d <73> 16 e8 e1 d9 08 00 84 c0 75 0d f6 05 55 ec ca 0d 01 0f 84 d7 01
RSP: 0018:ffffc90000a08c00 EFLAGS: 00000097
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880b89276d8
RBP: ffffffff81ae5a52 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1efe6af R12: 0000000000000000
R13: ffff8880b89276d8 R14: 0000000000000000 R15: 0000000000000001
FS:  00007ff16f22e880(0000) GS:ffff8881261c2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff8b9b3ff8 CR3: 0000000032a48000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irq+0xa2/0xf0 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1765 [inline]
 __hrtimer_run_queues+0x602/0xc60 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x108/0x410 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:check_region_inline mm/kasan/generic.c:171 [inline]
RIP: 0010:kasan_check_range+0x18/0x2b0 mm/kasan/generic.c:189
Code: cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 b0 01 48 85 f6 0f 84 b8 01 00 00 55 41 57 41 56 41 55 41 54 <53> 4c 8d 04 37 49 39 f8 0f 82 6c 02 00 00 49 89 f9 49 c1 e9 2f 41
RSP: 0018:ffffc90003367a18 EFLAGS: 00000202
RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffffffff846f956f
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880272cf8c8
RBP: ffff8880272cf890 R08: ffff8880272cf8cf R09: 1ffff11004e59f19
R10: dffffc0000000000 R11: ffffed1004e59f1a R12: ffff8880272cf8b0
R13: 00000000000000ca R14: 00000000000000c9 R15: 0000000000000001
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 tomoyo_check_acl+0x2df/0x400 security/tomoyo/domain.c:184
 tomoyo_path_permission+0x1b4/0x380 security/tomoyo/file.c:586
 tomoyo_path_perm+0x392/0x4b0 security/tomoyo/file.c:838
 security_inode_getattr+0x12f/0x330 security/security.c:2377
 vfs_getattr fs/stat.c:256 [inline]
 vfs_fstat fs/stat.c:278 [inline]
 __do_sys_newfstat fs/stat.c:546 [inline]
 __se_sys_newfstat fs/stat.c:543 [inline]
 __x64_sys_newfstat+0xfe/0x200 fs/stat.c:543
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff16eb11ad7
Code: 73 01 c3 48 8b 0d 21 f3 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 05 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 f1 f2 0d 00 f7 d8 64 89 02 b8
RSP: 002b:00007ffc56b40eb8 EFLAGS: 00000206 ORIG_RAX: 0000000000000005
RAX: ffffffffffffffda RBX: 000000000000000d RCX: 00007ff16eb11ad7
RDX: 0000000000090800 RSI: 00007ffc56b40ec0 RDI: 000000000000000d
RBP: 00007ffc56b40ec0 R08: 0000000000000000 R09: 0000000000000040
R10: 0000000000000000 R11: 0000000000000206 R12: 00005638c4ced780
R13: 00000000000000ff R14: 00005638adc49be0 R15: 00007ffc56b411e0
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g18365 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=8057
rcu: rcu_preempt kthread starved for 10502 jiffies! g18365 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27304 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x16e2/0x4cd0 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6860
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2046
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2248
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>