rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=9841, q=55 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294957692-4294947190), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g9841 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:26136 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5241 [inline]
 __schedule+0x143f/0x4570 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </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: 4456 Comm: syz.3.19 Not tainted 6.1.127-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:lock_acquire+0x298/0x5a0 kernel/locking/lockdep.c:5666
Code: 45 4b c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 11 00 00 00 00 66 43 c7 44 25 15 00 00 43 c6 44 25 17 00 <65> 48 8b 04 25 28 00 00 00 48 3b 84 24 00 01 00 00 0f 85 b3 02 00
RSP: 0018:ffffc900035476e0 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff920006a8ee8 RCX: ffffffff816b5eb2
RDX: dffffc0000000000 RSI: ffffffff8b0c14c0 RDI: ffffffff8b5e67c0
RBP: ffffc90003547828 R08: dffffc0000000000 R09: fffffbfff224a04e
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920006a8ee4
R13: dffffc0000000000 R14: ffffc90003547740 R15: 0000000000000046
FS:  000055555d3fd500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33a5ffff CR3: 00000000581e5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 seqcount_lockdep_reader_access+0xf8/0x220 include/linux/seqlock.h:102
 timekeeping_get_delta kernel/time/timekeeping.c:254 [inline]
 timekeeping_get_ns kernel/time/timekeeping.c:388 [inline]
 ktime_get_with_offset+0x101/0x320 kernel/time/timekeeping.c:891
 common_hrtimer_rearm+0x60/0x110 kernel/time/posix-timers.c:302
 posixtimer_rearm+0x1ad/0x3f0 kernel/time/posix-timers.c:328
 dequeue_signal+0x245/0x590 kernel/signal.c:704
 get_signal+0x5f2/0x17d0 kernel/signal.c:2751
 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9d1878cd29
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:00007ffc2a106688 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f9d189a5fa8 RCX: 00007f9d1878cd29
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f9d189a5fac
RBP: 00007f9d189a5fac R08: 0000000000000010 R09: 00007ffc2a10697f
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9d189a5fa0 R14: 0000000000000004 R15: 0000000000001c9e
 </TASK>