rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (1 GPs behind) idle=891/1/0x4000000000000002 softirq=60349/60350 fqs=5243
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P19078/1:b..l
(detected by 1, t=10502 jiffies, g=86637, q=13709)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 19101 Comm: syz.5.2801 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:check_kcov_mode kernel/kcov.c:171 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x2a/0x60 kernel/kcov.c:205
Code: 48 8b 04 24 65 48 8b 0d 14 5b 89 7e 65 8b 15 15 5b 89 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 34 16 00 00 00 <74> 2c 8b 91 10 16 00 00 83 fa 02 75 21 48 8b 91 18 16 00 00 48 8b
RSP: 0018:ffffc90000007318 EFLAGS: 00000046
RAX: ffffffff819bbd37 RBX: 0000000000000001 RCX: ffff888026a49dc0
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000007450 R08: ffffc900000073d7 R09: ffffc900000073c0
R10: dffffc0000000000 R11: fffff52000000e7b R12: 1ffff92000000e74
R13: ffffc900000074a0 R14: 0000000000000008 R15: ffff88807adb6578
FS: 00007fd94aa1b6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000040000 CR3: 0000000074980000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
__perf_output_begin kernel/events/ring_buffer.c:170 [inline]
perf_output_begin_forward+0x1c7/0xa30 kernel/events/ring_buffer.c:271
__perf_event_output kernel/events/core.c:7814 [inline]
perf_event_output_forward+0x19b/0x2e0 kernel/events/core.c:7832
__perf_event_overflow+0x35f/0x550 kernel/events/core.c:9525
perf_swevent_overflow kernel/events/core.c:9601 [inline]
perf_swevent_event+0x4b8/0x540 kernel/events/core.c:9639
perf_tp_event+0x324/0xbe0 kernel/events/core.c:10057
perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10031
perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14
trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 42 0b 9d 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007b00 EFLAGS: 00000206
RAX: 4f84aeed39ae1f00 RBX: 1ffff92000000f64 RCX: 4f84aeed39ae1f00
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a48c0
RBP: ffffc90000007bd8 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: ffffffff8c323400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
ieee80211_iterate_active_interfaces_atomic+0x132/0x140 net/mac80211/util.c:831
mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4ea/0xb60 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
handle_softirqs+0x336/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:local_irq_disable_exit_to_user+0x0/0x20 include/linux/entry-common.h:210
Code: d9 48 89 de e8 41 00 00 00 eb cf eb 04 0f 0b eb af 65 8b 05 c2 1c 9c 7e 85 c0 74 a4 eb ef 66 2e 0f 1f 84 00 00 00 00 00 66 90 <50> 48 c7 04 24 00 00 00 00 9c 8f 04 24 8b 04 24 fa a9 00 02 00 00
RSP: 0018:ffffc900033aff08 EFLAGS: 00000282
RAX: 0000000000000000 RBX: ffffc900033aff58 RCX: 4f84aeed39ae1f00
RDX: dffffc0000000000 RSI: 00000000000000ca RDI: ffffc900033aff58
RBP: ffffc900033aff48 R08: ffff88807b85bbab R09: 1ffff1100f70b775
R10: dffffc0000000000 R11: ffffed100f70b776 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc900033aff58 R15: 00000000000000ca
__syscall_exit_to_user_mode_work kernel/entry/common.c:298 [inline]
syscall_exit_to_user_mode+0xe/0x40 kernel/entry/common.c:310
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd94c7e4159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd94aa1b0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fd94ca6c098 RCX: 00007fd94c7e4159
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd94ca6c09c
RBP: 00007fd94ca6c090 R08: 0021c4507f70ac22 R09: 0000000000000000
R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd94ca6c128 R14: 00007ffd444b0640 R15: 00007ffd444b0728
task:syz.3.2796 state:R running task stack:26544 pid:19078 ppid: 13103 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11c3/0x4350 kernel/sched/core.c:6395
preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:6571
preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6596
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
_raw_spin_unlock_irqrestore+0x10d/0x120 kernel/locking/spinlock.c:194
__htab_lru_percpu_map_update_elem+0x664/0x8b0 kernel/bpf/hashtab.c:1319
bpf_percpu_hash_update+0xf5/0x1d0 kernel/bpf/hashtab.c:2233
bpf_map_update_value+0x25d/0x650 kernel/bpf/syscall.c:198
generic_map_update_batch+0x52c/0x7d0 kernel/bpf/syscall.c:1430
bpf_map_do_batch+0x475/0x5f0 kernel/bpf/syscall.c:-1
__sys_bpf+0x671/0x6f0 kernel/bpf/syscall.c:-1
__do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7b84f77159
RSP: 002b:00007f7b831cf028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f7b851fefa0 RCX: 00007f7b84f77159
RDX: 0000000000000038 RSI: 0000200000000200 RDI: 000000000000001a
RBP: 00007f7b8500e06b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7b851ff038 R14: 00007f7b851fefa0 R15: 00007ffc6c3d6a38