rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P19215/1:b..l P19234/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=220461, q=929 ncpus=2)
task:syz.4.1776      state:R  running task     stack:22416 pid:19234 tgid:19233 ppid:18752  flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6529
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline]
RIP: 0010:__local_bh_enable_ip+0x170/0x200 kernel/softirq.c:389
Code: 8c e8 c4 ef 66 0a 65 66 8b 05 b4 6d ac 7e 66 85 c0 75 5d bf 01 00 00 00 e8 dd a9 0b 00 e8 68 da 43 00 fb 65 8b 05 78 6d ac 7e <85> c0 75 05 e8 e7 4c a9 ff 48 c7 44 24 20 0e 36 e0 45 49 c7 04 1c
RSP: 0018:ffffc90003fb7840 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 1ffff920007f6f0c RCX: ffffffff9a39ea03
RDX: dffffc0000000000 RSI: ffffffff8c0ad880 RDI: ffffffff8c60c080
RBP: ffffc90003fb78f0 R08: ffffffff901c022f R09: 1ffffffff2038045
R10: dffffc0000000000 R11: fffffbfff2038046 R12: dffffc0000000000
R13: 1ffff920007f6f10 R14: ffffc90003fb7880 R15: 0000000000000200
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 bpf_test_run+0x56b/0xa90 net/bpf/test_run.c:436
 bpf_prog_test_run_skb+0xc97/0x1820 net/bpf/test_run.c:1094
 bpf_prog_test_run+0x336/0x3b0 kernel/bpf/syscall.c:4313
 __sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5728
 __do_sys_bpf kernel/bpf/syscall.c:5817 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5815 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5815
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f531b17def9
RSP: 002b:00007f531bf91038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f531b335f80 RCX: 00007f531b17def9
RDX: 0000000000000050 RSI: 0000000020000600 RDI: 000000000000000a
RBP: 00007f531b1f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f531b335f80 R15: 00007ffe35e2e668
 </TASK>
task:syz.3.1767      state:R  running task     stack:25744 pid:19215 tgid:19199 ppid:18692  flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6529
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6708
 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6732
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 zap_pte_range mm/memory.c:1688 [inline]
 zap_pmd_range mm/memory.c:1736 [inline]
 zap_pud_range mm/memory.c:1765 [inline]
 zap_p4d_range mm/memory.c:1786 [inline]
 unmap_page_range+0x3818/0x42c0 mm/memory.c:1807
 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1897
 exit_mmap+0x264/0xc80 mm/mmap.c:3412
 __mmput+0x115/0x390 kernel/fork.c:1345
 exit_mm+0x220/0x310 kernel/exit.c:571
 do_exit+0x9b2/0x27f0 kernel/exit.c:869
 do_group_exit+0x207/0x2c0 kernel/exit.c:1031
 get_signal+0x176f/0x1810 kernel/signal.c:2936
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1a9637def9
RSP: 002b:00007f1a97224038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: 0000000000010106 RBX: 00007f1a96536058 RCX: 00007f1a9637def9
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007f1a963f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1a96536058 R15: 00007ffc2c38af48
 </TASK>
rcu: rcu_preempt kthread starved for 10573 jiffies! g220461 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:23992 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.11.0-syzkaller-05591-g2a17bb8c204f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline]
RIP: 0010:acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112
Code: 90 90 90 90 90 90 90 90 90 65 48 8b 04 25 c0 d6 03 00 48 f7 00 08 00 00 00 75 10 eb 07 0f 00 2d 25 0f ac 00 f3 0f 1e fa fb f4 <fa> e9 44 d0 31 00 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90
RSP: 0018:ffffc900001a7d08 EFLAGS: 00000246
RAX: ffff88801d6d8000 RBX: ffff88801fe85864 RCX: 0000000004cde721
RDX: 0000000000000001 RSI: ffff88801fe85800 RDI: ffff88801fe85864
RBP: 000000000003a8b8 R08: ffff8880b8937e9b R09: 1ffff11017126fd3
R10: dffffc0000000000 R11: ffffffff8bbe6c70 R12: ffff888147ee3000
R13: 0000000000000001 R14: 0000000000000001 R15: ffffffff8f11e2a0
FS:  0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557e8155c8 CR3: 000000005863c000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 acpi_idle_enter+0xe4/0x140 drivers/acpi/processor_idle.c:702
 cpuidle_enter_state+0x10b/0x470 drivers/cpuidle/cpuidle.c:264
 cpuidle_enter+0x5d/0xa0 drivers/cpuidle/cpuidle.c:385
 call_cpuidle kernel/sched/idle.c:155 [inline]
 cpuidle_idle_call kernel/sched/idle.c:230 [inline]
 do_idle+0x375/0x5d0 kernel/sched/idle.c:326
 cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:424
 start_secondary+0x102/0x110 arch/x86/kernel/smpboot.c:314
 common_startup_64+0x13e/0x147
 </TASK>