rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10503 jiffies, g=183025, q=105 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10504 (4295249054-4295238550), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10505 jiffies! g183025 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:23984 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1961/0x4ab0 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6778
 schedule_timeout+0x1bd/0x300 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x30a/0x1500 kernel/rcu/tree.c:1631
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1830
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </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: 11646 Comm: syz-executor.5 Not tainted 6.7.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:send_sigqueue+0x685/0x760 kernel/signal.c:2028
Code: 4b c7 44 25 00 00 00 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 80 00 00 00 0f 85 cb 00 00 00 44 89 f0 48 8d 65 d8 5b 41 5c <41> 5d 41 5e 41 5f 5d c3 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 06 fa
RSP: 0018:ffffc90000007cd0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88802a14faf0 RCX: ffffc90000007b03
RDX: 0000000000000001 RSI: ffffffff8b6ab640 RDI: ffffffff8bbddfe0
RBP: ffffc90000007ce8 R08: ffffffff8f00c0ef R09: 1ffffffff1e0181d
R10: dffffc0000000000 R11: fffffbfff1e0181e R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880500dc478
FS:  00007f8b78bf26c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8b78bf1f00 CR3: 00000000575d4000 CR4: 00000000003506f0
DR0: 000000000000000c DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 posix_timer_event kernel/time/posix-timers.c:298 [inline]
 posix_timer_fn+0x18a/0x390 kernel/time/posix-timers.c:324
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x59f/0xd20 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x104/0x3a0 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
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: 00 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 8a 1d 4b f6 48 89 df e8 82 58 4c f6 e8 fd 21 73 f6 fb bf 01 00 00 00 <e8> a2 7d 3e f6 65 8b 05 53 8b e1 74 85 c0 74 02 5b c3 e8 20 59 de
RSP: 0018:ffffc90004bf7c50 EFLAGS: 00000282
RAX: 7519b995e1f03d00 RBX: ffff8880583c1bc0 RCX: ffffffff925cf303
RDX: dffffc0000000000 RSI: ffffffff8b6aa4c0 RDI: 0000000000000001
RBP: ffffc90004bf7d90 R08: ffffffff8f00c0ef R09: 1ffffffff1e0181d
R10: dffffc0000000000 R11: fffffbfff1e0181e R12: 1ffff1100b07840b
R13: 000000001c000004 R14: 0000000000000021 R15: ffff8880583c2058
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 get_signal+0x1569/0x1840 kernel/signal.c:2907
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x150 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
 syscall_exit_to_user_mode+0x69/0x2a0 kernel/entry/common.c:296
 do_syscall_64+0x52/0x110 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f8b77e7cce9
Code: 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 01 48
RSP: 002b:00007f8b78bf20c8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f8b77f9c120 RCX: 00007f8b77e7cce9
RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f8b77ec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8b77f9c120 R15: 00007ffeb6890b38
 </TASK>