rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=7013, q=58 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294954871-4294944369), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g7013 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:26712 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: 4257 Comm: syz-executor336 Not tainted 6.1.115-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__preempt_count_sub arch/x86/include/asm/preempt.h:85 [inline]
RIP: 0010:preempt_count_sub+0x59/0x160 kernel/sched/core.c:5745
Code: 22 65 8b 05 31 e8 a3 7e 89 c1 81 e1 ff ff ff 7f 39 d9 7c 23 81 fb fe 00 00 00 77 07 0f b6 c0 85 c0 74 55 65 8b 05 0f e8 a3 7e <f7> db 65 01 1d 06 e8 a3 7e 5b 41 5e c3 e8 95 06 d8 02 85 c0 74 f3
RSP: 0018:ffffc90003d7f9c8 EFLAGS: 00000002
RAX: 0000000080000001 RBX: 0000000000000001 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8b0afb40 RDI: 0000000000000001
RBP: ffffc90003d7fa90 R08: dffffc0000000000 R09: ffffed1004d713b9
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff920007aff44 R14: dffffc0000000000 R15: 0000000000000200
FS:  00007f63a5aa96c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f63a5aa8e40 CR3: 0000000074f6b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 __local_bh_enable_ip+0x15f/0x1f0 kernel/softirq.c:399
 fpu__restore_sig+0xa3f/0x1300 arch/x86/kernel/fpu/signal.c:493
 restore_sigcontext+0x633/0x700 arch/x86/kernel/signal.c:140
 __do_sys_rt_sigreturn+0x190/0x250 arch/x86/kernel/signal.c:675
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f63a5af0307
Code: 14 25 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 1c 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:00007f63a5aa9238 EFLAGS: 00000246
RAX: 00000000000000ca RBX: 00007f63a5b73308 RCX: 00007f63a5af0309
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f63a5b73308
RBP: 00007f63a5b73300 R08: 00007f63a5aa96c0 R09: 00007f63a5aa96c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f63a5b7330c
R13: 0000000000000000 R14: 00007ffec127acb0 R15: 00007ffec127ad98
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.205 msecs