rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (3839 ticks this GP) idle=70e/1/0x4000000000000000 softirq=18706/18706 fqs=0 
	(t=10500 jiffies g=23553 q=242)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g23553 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=18344
rcu: rcu_preempt kthread starved for 10500 jiffies! g23553 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:29184 pid:   13 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4324 [inline]
 __schedule+0x90c/0x21a0 kernel/sched/core.c:5075
 schedule+0xcf/0x270 kernel/sched/core.c:5154
 schedule_timeout+0x14a/0x250 kernel/time/timer.c:1892
 rcu_gp_fqs_loop kernel/rcu/tree.c:2005 [inline]
 rcu_gp_kthread+0xd07/0x2250 kernel/rcu/tree.c:2178
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
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: 12637 Comm: syz-executor.4 Not tainted 5.12.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:queued_write_lock_slowpath+0x131/0x270 kernel/locking/qrwlock.c:76
Code: 00 00 00 00 fc ff df 49 01 c7 41 83 c6 03 41 0f b6 07 41 38 c6 7c 08 84 c0 0f 85 fe 00 00 00 8b 03 3d 00 01 00 00 74 19 f3 90 <41> 0f b6 07 41 38 c6 7c ec 84 c0 74 e8 48 89 df e8 da 5c 5d 00 eb
RSP: 0018:ffffc90003297a60 EFLAGS: 00000006
RAX: 0000000000000300 RBX: ffffffff8bc0a080 RCX: ffffffff8159ecfa
RDX: fffffbfff1781411 RSI: 0000000000000004 RDI: ffffffff8bc0a080
RBP: 00000000000000ff R08: 0000000000000001 R09: ffffffff8bc0a083
R10: fffffbfff1781410 R11: 0000000000000000 R12: 1ffff92000652f4d
R13: ffffffff8bc0a084 R14: 0000000000000003 R15: fffffbfff1781410
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc7ae717718 CR3: 000000002569a000 CR4: 0000000000350ef0
Call Trace:
 queued_write_lock include/asm-generic/qrwlock.h:97 [inline]
 do_raw_write_lock+0x1ce/0x280 kernel/locking/spinlock_debug.c:207
 exit_notify kernel/exit.c:667 [inline]
 do_exit+0xc4a/0x2a60 kernel/exit.c:845
 do_group_exit+0x125/0x310 kernel/exit.c:922
 get_signal+0x42c/0x2100 kernel/signal.c:2773
 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x465ef9
Code: Unable to access opcode bytes at RIP 0x465ecf.
RSP: 002b:00007f6de14cf218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000056c0b8 RCX: 0000000000465ef9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056c0b8
RBP: 000000000056c0b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0bc
R13: 00007ffeb663d0ff R14: 00007f6de14cf300 R15: 0000000000022000
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12637 Comm: syz-executor.4 Not tainted 5.12.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:queued_write_lock_slowpath+0x131/0x270 kernel/locking/qrwlock.c:76
Code: 00 00 00 00 fc ff df 49 01 c7 41 83 c6 03 41 0f b6 07 41 38 c6 7c 08 84 c0 0f 85 fe 00 00 00 8b 03 3d 00 01 00 00 74 19 f3 90 <41> 0f b6 07 41 38 c6 7c ec 84 c0 74 e8 48 89 df e8 da 5c 5d 00 eb
RSP: 0018:ffffc90003297a60 EFLAGS: 00000006
RAX: 0000000000000300 RBX: ffffffff8bc0a080 RCX: ffffffff8159ecfa
RDX: fffffbfff1781411 RSI: 0000000000000004 RDI: ffffffff8bc0a080
RBP: 00000000000000ff R08: 0000000000000001 R09: ffffffff8bc0a083
R10: fffffbfff1781410 R11: 0000000000000000 R12: 1ffff92000652f4d
R13: ffffffff8bc0a084 R14: 0000000000000003 R15: fffffbfff1781410
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc7ae717718 CR3: 000000002569a000 CR4: 0000000000350ef0
Call Trace:
 queued_write_lock include/asm-generic/qrwlock.h:97 [inline]
 do_raw_write_lock+0x1ce/0x280 kernel/locking/spinlock_debug.c:207
 exit_notify kernel/exit.c:667 [inline]
 do_exit+0xc4a/0x2a60 kernel/exit.c:845
 do_group_exit+0x125/0x310 kernel/exit.c:922
 get_signal+0x42c/0x2100 kernel/signal.c:2773
 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x465ef9
Code: Unable to access opcode bytes at RIP 0x465ecf.
RSP: 002b:00007f6de14cf218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000056c0b8 RCX: 0000000000465ef9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056c0b8
RBP: 000000000056c0b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0bc
R13: 00007ffeb663d0ff R14: 00007f6de14cf300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 12631 Comm: syz-executor.4 Not tainted 5.12.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0xfa/0x151 lib/dump_stack.c:120
 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x222/0x2a7 kernel/rcu/tree_stall.h:341
 print_cpu_stall kernel/rcu/tree_stall.h:622 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:697 [inline]
 rcu_pending kernel/rcu/tree.c:3830 [inline]
 rcu_sched_clock_irq.cold+0x4f7/0x11dd kernel/rcu/tree.c:2650
 update_process_times+0x16d/0x200 kernel/time/timer.c:1796
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1369
 __run_hrtimer kernel/time/hrtimer.c:1519 [inline]
 __hrtimer_run_queues+0x1c0/0xe40 kernel/time/hrtimer.c:1583
 hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1645
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106
 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:check_kcov_mode+0x7/0x40 kernel/kcov.c:163
Code: fe ff ff 48 89 df e8 f8 fa 43 00 e9 a1 fe ff ff 48 8b 3c 24 e8 ea fa 43 00 e9 18 fe ff ff cc cc cc cc cc 65 8b 05 59 a0 8e 7e <89> c2 81 e2 00 01 00 00 a9 00 01 ff 00 74 10 31 c0 85 d2 74 15 8b
RSP: 0018:ffffc90000db08d0 EFLAGS: 00000206
RAX: 0000000000000302 RBX: 0000000000000003 RCX: 0000000000000005
RDX: 0000000000000000 RSI: ffff8880256db780 RDI: 0000000000000003
RBP: 00000000000000a0 R08: ffffffff8a84bea0 R09: ffffffff885fd02f
R10: 0000000000000008 R11: 0000000000000080 R12: ffff8880256db780
R13: 0000000000000080 R14: ffff888018773050 R15: 0000000000000000
 write_comp_data kernel/kcov.c:218 [inline]
 __sanitizer_cov_trace_switch+0x63/0xf0 kernel/kcov.c:320
 ieee80211_rx_h_mgmt net/mac80211/rx.c:3588 [inline]
 ieee80211_rx_handlers+0x89ef/0xae60 net/mac80211/rx.c:3793
 ieee80211_invoke_rx_handlers net/mac80211/rx.c:3823 [inline]
 ieee80211_prepare_and_rx_handle+0x22ad/0x5070 net/mac80211/rx.c:4537
 __ieee80211_rx_handle_packet net/mac80211/rx.c:4635 [inline]
 ieee80211_rx_list+0x930/0x2680 net/mac80211/rx.c:4819
 ieee80211_rx_napi+0xf7/0x3d0 net/mac80211/rx.c:4842
 ieee80211_rx include/net/mac80211.h:4524 [inline]
 ieee80211_tasklet_handler+0xd4/0x130 net/mac80211/main.c:235
 tasklet_action_common.constprop.0+0x1d7/0x2d0 kernel/softirq.c:557
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu kernel/softirq.c:422 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:434
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:mm_update_next_owner+0x3fa/0x7a0 kernel/exit.c:387
Code: ad b0 fb ff ff 48 81 fd 50 c8 cb 8b 75 3d e9 9d 01 00 00 e8 c8 e6 2e 00 49 8d bd 50 04 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 <0f> 85 f2 02 00 00 49 8b ad 50 04 00 00 4c 8d ad b0 fb ff ff 48 81
RSP: 0018:ffffc90003227b18 EFLAGS: 00000246
RAX: 1ffff11003d9277a RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff8880256db780 RSI: ffffffff814470a8 RDI: ffff88801ec93bd0
RBP: ffff88801ec93bd0 R08: 0000000000000000 R09: ffffffff8bc0a083
R10: ffffffff8144711f R11: 0000000000000001 R12: ffff88807de8e900
R13: ffff88801ec93780 R14: 0000000000200000 R15: ffff888011518010
 exit_mm kernel/exit.c:500 [inline]
 do_exit+0xb02/0x2a60 kernel/exit.c:812
 do_group_exit+0x125/0x310 kernel/exit.c:922
 get_signal+0x42c/0x2100 kernel/signal.c:2773
 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:811
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x148/0x250 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x465ef9
Code: Unable to access opcode bytes at RIP 0x465ecf.
RSP: 002b:00007f6de1511218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000056bf68 RCX: 0000000000465ef9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056bf68
RBP: 000000000056bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf6c
R13: 00007ffeb663d0ff R14: 00007f6de1511300 R15: 0000000000022000