rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=10481, q=216)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294956787-4294946284), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10504 jiffies! g10481 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:27584 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11bb/0x4390 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 schedule_timeout+0x15c/0x280 kernel/time/timer.c:1914
 rcu_gp_fqs_loop+0x29e/0x11b0 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0x98/0x350 kernel/rcu/tree.c:2145
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </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: 5175 Comm: syz-executor.3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:separate_irq_context kernel/locking/lockdep.c:4541 [inline]
RIP: 0010:__lock_acquire+0xec0/0x7c60 kernel/locking/lockdep.c:4996
Code: 85 db 74 5f 83 fb 31 0f 83 a8 5b 00 00 48 8d 04 9b 48 8b 8c 24 90 00 00 00 48 8d 5c c1 f8 48 89 d8 48 c1 e8 03 42 0f b6 04 00 <84> c0 0f 85 a1 5b 00 00 8b 1b 48 8b 44 24 58 42 0f b6 04 00 84 c0
RSP: 0018:ffffc9000325f560 EFLAGS: 00000806
RAX: 0000000000000000 RBX: ffff8880209f46b8 RCX: ffff8880209f4670
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ffbc0c8
RBP: ffffc9000325f7b0 R08: dffffc0000000000 R09: fffffbfff1ff781a
R10: fffffbfff1ff781a R11: 1ffffffff1ff7819 R12: ffff8880209f46e0
R13: ffff8880209f3b80 R14: 1ffff1100413e8cc R15: f82ce1433679bfef
FS:  00007fba20d346c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fba20d33d80 CR3: 0000000075b11000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
 seqcount_lockdep_reader_access+0xc6/0x1c0 include/linux/seqlock.h:103
 timekeeping_get_delta kernel/time/timekeeping.c:254 [inline]
 timekeeping_get_ns kernel/time/timekeeping.c:388 [inline]
 ktime_get+0x7b/0x270 kernel/time/timekeeping.c:831
 clockevents_program_min_delta+0x55/0x340 kernel/time/clockevents.c:241
 hrtimer_start_range_ns+0xa9a/0xc20 kernel/time/hrtimer.c:1292
 posixtimer_rearm+0x131/0x340 kernel/time/posix-timers.c:329
 dequeue_signal+0x174/0x440 kernel/signal.c:696
 get_signal+0x6fe/0x12c0 kernel/signal.c:2781
 arch_do_signal_or_restart+0xc1/0x1300 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fba219b30a7
Code: 14 25 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89
RSP: 002b:00007fba20d34178 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007fba21ae9f88 RCX: 00007fba219b30a9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fba21ae9f88
RBP: 00007fba21ae9f80 R08: 00007fba20d346c0 R09: 00007fba20d346c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fba21ae9f8c
R13: 000000000000000b R14: 00007ffee4d995e0 R15: 00007ffee4d996c8
 </TASK>