rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (1 GPs behind) idle=3c2/1/0x4000000000000000 softirq=9620/9673 fqs=25
(t=10500 jiffies g=8345 q=342)
rcu: rcu_preempt kthread starved for 7747 jiffies! g8345 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:29176 pid: 11 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:3779 [inline]
__schedule+0x893/0x2130 kernel/sched/core.c:4528
schedule+0xcf/0x270 kernel/sched/core.c:4606
schedule_timeout+0x148/0x250 kernel/time/timer.c:1871
rcu_gp_fqs_loop kernel/rcu/tree.c:1925 [inline]
rcu_gp_kthread+0xb4c/0x1c90 kernel/rcu/tree.c:2099
kthread+0x3b1/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
NMI backtrace for cpu 0
CPU: 0 PID: 8847 Comm: syz-executor864 Not tainted 5.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x107/0x163 lib/dump_stack.c:118
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+0x1e3/0x21e kernel/rcu/tree_stall.h:331
print_cpu_stall kernel/rcu/tree_stall.h:563 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:637 [inline]
rcu_pending kernel/rcu/tree.c:3694 [inline]
rcu_sched_clock_irq.cold+0x472/0xee8 kernel/rcu/tree.c:2567
update_process_times+0x77/0xd0 kernel/time/timer.c:1709
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:176
tick_sched_timer+0x1d1/0x2a0 kernel/time/tick-sched.c:1328
__run_hrtimer kernel/time/hrtimer.c:1519 [inline]
__hrtimer_run_queues+0x1ce/0xea0 kernel/time/hrtimer.c:1583
hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1645
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
__sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1097
run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline]
sysvec_apic_timer_interrupt+0x48/0x100 arch/x86/kernel/apic/apic.c:1091
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline]
RIP: 0010:lock_acquire kernel/locking/lockdep.c:5440 [inline]
RIP: 0010:lock_acquire+0x2c7/0x740 kernel/locking/lockdep.c:5402
Code: 48 c7 c7 40 5f 4b 89 48 83 c4 20 e8 c3 65 8f 07 b8 ff ff ff ff 65 0f c1 05 56 d2 ab 7e 83 f8 01 0f 85 36 03 00 00 ff 34 24 9d 3a fe ff ff 65 ff 05 fd c0 ab 7e 48 8b 05 b6 bf 82 0b e8 51 5a
RSP: 0018:ffffc90000007ce0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff92000000f9e RCX: 0000000000000001
RDX: 1ffff11005bc07b2 RSI: 0000000000000102 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ebaf667
R10: fffffbfff1d75ecc R11: 0000000000000001 R12: 0000000000000002
R13: ffffffff8b3378e0 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:248 [inline]
rcu_read_lock include/linux/rcupdate.h:641 [inline]
ieee80211_iterate_active_interfaces_atomic+0x42/0x170 net/mac80211/util.c:827
mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1782
__run_hrtimer kernel/time/hrtimer.c:1519 [inline]
__hrtimer_run_queues+0x693/0xea0 kernel/time/hrtimer.c:1583
hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1600
__do_softirq+0x2a0/0x9f6 kernel/softirq.c:298
asm_call_irq_on_stack+0xf/0x20
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77
invoke_softirq kernel/softirq.c:393 [inline]
__irq_exit_rcu kernel/softirq.c:423 [inline]
irq_exit_rcu+0x132/0x200 kernel/softirq.c:435
sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1091
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x25/0x50 kernel/locking/spinlock.c:191
Code: f8 5d c3 66 90 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 ca 3a 6e f8 48 89 ef e8 52 ef 6e f8 f6 c7 02 75 1a 53 9d 01 00 00 00 e8 61 5b 63 f8 65 8b 05 8a 05 1a 77 85 c0 74 0a 5b
RSP: 0018:ffffc900021afc38 EFLAGS: 00000287
RAX: 000000000000288f RBX: 0000000000000287 RCX: 1ffffffff19d8e91
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffff88802de02278 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000287
R13: ffff88802de02278 R14: ffff8880b9e34958 R15: ffff8880b9e34940
try_to_wake_up+0x56b/0x1330 kernel/sched/core.c:2981
wake_up_process kernel/sched/core.c:3049 [inline]
wake_up_q+0x96/0x100 kernel/sched/core.c:597
rwsem_wake kernel/locking/rwsem.c:1309 [inline]
__up_write kernel/locking/rwsem.c:1461 [inline]
up_write+0x241/0x560 kernel/locking/rwsem.c:1584
inode_unlock include/linux/fs.h:779 [inline]
perf_fasync+0x88/0xb0 kernel/events/core.c:6230
setfl fs/fcntl.c:73 [inline]
do_fcntl+0x667/0x1070 fs/fcntl.c:347
__do_sys_fcntl fs/fcntl.c:463 [inline]
__se_sys_fcntl fs/fcntl.c:448 [inline]
__x64_sys_fcntl+0x165/0x1e0 fs/fcntl.c:448
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x441f59
Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffe2cda5ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000048
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441f59
RDX: 0000000000042000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000002100000000 R09: 0000002100000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000136bc0
R13: 0000000000000000 R14: 000000000000000c R15: 0000000000000004