rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P1102/1:b..l P5626/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=10241, q=1310984 ncpus=2)
task:syz.1.89        state:R  running task     stack:25824 pid:5626  tgid:5626  ppid:5225   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0xef5/0x5750 kernel/sched/core.c:6675
 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6854
 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:1691 [inline]
 zap_pmd_range mm/memory.c:1739 [inline]
 zap_pud_range mm/memory.c:1768 [inline]
 zap_p4d_range mm/memory.c:1789 [inline]
 unmap_page_range+0xb01/0x3cf0 mm/memory.c:1810
 unmap_single_vma+0x194/0x2b0 mm/memory.c:1856
 unmap_vmas+0x22f/0x490 mm/memory.c:1900
 exit_mmap+0x1c6/0xb30 mm/mmap.c:1864
 __mmput+0x12a/0x480 kernel/fork.c:1347
 mmput+0x62/0x70 kernel/fork.c:1369
 exit_mm kernel/exit.c:571 [inline]
 do_exit+0x9bf/0x2d70 kernel/exit.c:926
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1088
 get_signal+0x25fb/0x2770 kernel/signal.c:2917
 arch_do_signal_or_restart+0x90/0x7e0 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+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f909f37dff9
RSP: 002b:00007ffce34b73b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffff92 RBX: 00007ffce34b74e0 RCX: 00007f909f37dff9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f909f536064
RBP: 00007f909f536064 R08: 00007f90a0138080 R09: 00007ffce34b76af
R10: 00007ffce34b74c0 R11: 0000000000000246 R12: 000000000001dc5a
R13: 00007ffce34b74c0 R14: 0000000000000032 R15: 000000000001dc28
 </TASK>
task:kworker/u8:6    state:R  running task     stack:24912 pid:1102  tgid:1102  ppid:2      flags:0x00004000
Workqueue: events_unbound cfg80211_wiphy_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0xef5/0x5750 kernel/sched/core.c:6675
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6997
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_is_held_type+0x107/0x150 kernel/locking/lockdep.c:5902
Code: 00 00 b8 ff ff ff ff 65 0f c1 05 ac ca e0 74 83 f8 01 75 2d 9c 58 f6 c4 02 75 43 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 e8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 45 31 ed eb
RSP: 0018:ffffc90003e67898 EFLAGS: 00000282
RAX: 0000000000000046 RBX: ffff8880272be558 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8b6cd340 RDI: ffffffff8bd1a0c0
RBP: ffffffff8e1b8340 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880272bda00
R13: 0000000000000001 R14: 00000000ffffffff R15: 0000000000000003
 ieee80211_bss_info_update+0x5f9/0xab0 net/mac80211/scan.c:193
 ieee80211_rx_bss_info net/mac80211/ibss.c:1100 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x1898/0x2f40 net/mac80211/ibss.c:1606
 ieee80211_iface_process_skb net/mac80211/iface.c:1603 [inline]
 ieee80211_iface_work+0xc0b/0xf00 net/mac80211/iface.c:1657
 cfg80211_wiphy_work+0x3d9/0x550 net/wireless/core.c:440
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: rcu_preempt kthread starved for 9963 jiffies! g10241 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:26544 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5315 [inline]
 __schedule+0xef5/0x5750 kernel/sched/core.c:6675
 __schedule_loop kernel/sched/core.c:6752 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6767
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2247
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:111