rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=7353, q=8 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294965924-4294955421), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10504 jiffies! g7353 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:28736 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0xf12/0x5c60 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xe9/0x280 kernel/sched/core.c:6817
 schedule_timeout+0x137/0x2a0 kernel/time/timer.c:2183
 rcu_gp_fqs_loop+0x1ec/0xb20 kernel/rcu/tree.c:1663
 rcu_gp_kthread+0x24b/0x380 kernel/rcu/tree.c:1862
 kthread+0x2c6/0x3b0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 5105 Comm: syz-executor336 Not tainted 6.8.0-rc2-syzkaller-00251-g6897cea71837 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 8b 74 24 08 48 89 fb 48 83 c7 18 e8 ea 97 a3 f6 48 89 df e8 d2 12 a4 f6 e8 5d 40 cb f6 fb bf 01 00 00 00 <e8> 82 5f 95 f6 65 8b 05 f3 ad 3c 75 85 c0 74 06 5b c3 cc cc cc cc
RSP: 0018:ffffc900035efcf8 EFLAGS: 00000206
RAX: 0000000003a79cd1 RBX: ffff888029bf0000 RCX: 1ffffffff1f3a301
RDX: 0000000000000000 RSI: ffffffff8b0cb240 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8f9d4a97 R11: 0000000000000000 R12: ffff888029bf0498
R13: 0000000000000021 R14: ffff888029bf0400 R15: 1ffff920006bdfae
FS:  0000555555bfd3c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002006b000 CR3: 000000002c1e8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0x189d/0x2790 kernel/signal.c:2896
 arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0x156/0x2b0 kernel/entry/common.c:212
 do_syscall_64+0xe5/0x270 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f1edba0903e
Code: 3c 25 10 b0 06 20 31 c0 bf df 00 00 00 48 c7 04 25 08 b0 06 20 08 00 00 00 48 c7 04 25 18 b0 06 20 09 00 00 00 e8 22 4e 03 00 <89> df 83 c3 01 e8 68 3f 03 00 83 fb 1e 75 f1 31 ff e8 ac 7a 00 00
RSP: 002b:00007fff43d956f0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f1edba3de79
RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000555555bfd370
R13: 0000000000000002 R14: 00007fff43d95760 R15: 00007fff43d95750
 </TASK>