rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (10500 ticks this GP) idle=8fe4/1/0x4000000000000000 softirq=6976/6976 fqs=32
	(t=10501 jiffies g=4881 q=1282 ncpus=2)
rcu: rcu_preempt kthread starved for 10437 jiffies! g4881 f0x0 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:0     pid:16    ppid:2      flags:0x00000008
Call trace:
 __switch_to+0x2f4/0x568 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0xdd4/0x1b2c kernel/sched/core.c:6561
 schedule+0xc4/0x170 kernel/sched/core.c:6637
 schedule_timeout+0x180/0x2c8 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2a8/0x134c kernel/rcu/tree.c:1706
 rcu_gp_kthread+0xc0/0x2f8 kernel/rcu/tree.c:1905
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864
rcu: Stack dump where RCU GP kthread last ran:
Task dump for CPU 1:
task:syz-executor288 state:R  running task     stack:0     pid:4380  ppid:4327   flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x568 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0xdd4/0x1b2c kernel/sched/core.c:6561
 preempt_schedule_common+0xec/0x1a0 kernel/sched/core.c:6730
 preempt_schedule+0x64/0x84 kernel/sched/core.c:6754
 __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
 _raw_spin_unlock_irq+0x8c/0x90 kernel/locking/spinlock.c:202
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 __set_current_blocked+0x194/0x1e0 kernel/signal.c:3060
 set_current_blocked+0x50/0x60 kernel/signal.c:3044
 restore_sigframe arch/arm64/kernel/signal.c:646 [inline]
 __arm64_sys_rt_sigreturn+0x258/0x1e00 arch/arm64/kernel/signal.c:700
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
CPU: 0 PID: 4378 Comm: syz-executor288 Not tainted 6.1.140-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 60001000 (nZCv daif -PAN -UAO -TCO -DIT +SSBS BTYPE=--)
pc : 0000ffff9481098c
lr : 0000ffff94836b44
sp : 0000ffffc769d150
x29: 0000ffffc769d150 x28: 0000ffff9484fb48 x27: 0000ffff9484f000
x26: 431bde82d7b634db x25: 0000000000000000 x24: 0000ffffc769e470
x23: 0000ffffc769e6c0 x22: 0000000000000048 x21: 0000aaaaddd6b770
x20: 0000000000000000 x19: 0000ffffc769d190 x18: 0000ffff948933f8
x17: 0000ffff9480e840 x16: 0000000000000001 x15: 0000000000000000
x14: 0000000000000001 x13: 0000ffffc769dca0 x12: 0000ffffc769dca0
x11: 0000ffffc769e3f0 x10: 00000000ffffffd0 x9 : 00000000ffffff80
x8 : 00000000000000ac x7 : 7f7fffffff7fff7f x6 : 7f7fffffff7fff7f
x5 : 7f7fffffff7fff7f x4 : 0000000000000008 x3 : 0000000000000000
x2 : 0000ffffc769d210 x1 : 0000ffffc769d190 x0 : 0000000000000003