rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P4427/1:b..l
	(detected by 0, t=10502 jiffies, g=4585, q=986 ncpus=2)
task:syz.4.20        state:R  running task     stack:0     pid:4427  ppid:4304   flags:0x00000008
Call trace:
 __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0xef4/0x1d44 kernel/sched/core.c:6561
 preempt_schedule_irq+0x8c/0x1b8 kernel/sched/core.c:6873
 arm64_preempt_schedule_irq arch/arm64/kernel/entry-common.c:265 [inline]
 __el1_irq arch/arm64/kernel/entry-common.c:474 [inline]
 el1_interrupt+0x4c/0x68 arch/arm64/kernel/entry-common.c:486
 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581
 array_map_lookup_elem+0xb8/0x13c kernel/bpf/arraymap.c:172
 bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
 __bpf_prog_run include/linux/filter.h:603 [inline]
 bpf_prog_run include/linux/filter.h:610 [inline]
 bpf_test_run+0x370/0x870 net/bpf/test_run.c:402
 bpf_prog_test_run_skb+0x8d8/0x1094 net/bpf/test_run.c:1186
 bpf_prog_test_run+0x2dc/0x364 kernel/bpf/syscall.c:3685
 __sys_bpf+0x390/0x654 kernel/bpf/syscall.c:5038
 __do_sys_bpf kernel/bpf/syscall.c:5124 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5122 [inline]
 __arm64_sys_bpf+0x80/0x98 kernel/bpf/syscall.c:5122
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 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
rcu: rcu_preempt kthread starved for 10491 jiffies! g4585 f0x0 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:0     pid:16    ppid:2      flags:0x00000008
Call trace:
 __switch_to+0x320/0x754 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0xef4/0x1d44 kernel/sched/core.c:6561
 schedule+0xc4/0x170 kernel/sched/core.c:6637
 schedule_timeout+0x1d8/0x344 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2cc/0x1538 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0xc0/0x308 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:
CPU: 0 PID: 4449 Comm: syz.1.22 Not tainted 6.1.102-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
pstate: 80001000 (Nzcv daif -PAN -UAO -TCO -DIT +SSBS BTYPE=--)
pc : 0000ffff9236aa70
lr : 0000ffff93031894
sp : 0000ffffddab9100
x29: 0000ffffddaba350 x28: 0000ffff924c7e80 x27: 0000ffff924c6464
x26: 0000000000000000 x25: 00000000000003e8 x24: 0000ffff917fd008
x23: 0000ffff924c64f0 x22: 00000000001ffff8 x21: 0000ffff91900398
x20: 0000ffff919fd000 x19: 0000ffff924b0440 x18: 0000000000000032
x17: 0000ffff92332600 x16: 0000ffff92490018 x15: 0000000050635f4b
x14: 0000000000001f26 x13: 000000007fffffff x12: 000000000000002a
x11: 0000000000000001 x10: 0000ffff924b2000 x9 : 0000ffff924b0000
x8 : 000000000aaeb8a5 x7 : 0000ffff924b0500 x6 : 0000ffff917fd078
x5 : ffff800008029c30 x4 : 0000ffff9187b458 x3 : ffff800008044c74
x2 : 0000ffffddab9180 x1 : 0000ffffddab9100 x0 : 0000000000000021