rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (1 GPs behind) idle=27f/1/0x4000000000000002 softirq=7238/7239 fqs=5237
(detected by 1, t=10502 jiffies, g=9509, q=1544)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4647 Comm: syz.2.91 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:unwind_next_frame+0x6fa/0x1cf0 arch/x86/kernel/unwind_orc.c:479
Code: 4c 89 f8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 a9 12 00 00 49 0f bf 04 24 48 01 c2 4d 8d 7c 24 04 e9 61 01 00 00 48 8b 44 24 28 <80> 3c 28 00 4c 8d 73 38 74 08 4c 89 f7 e8 14 43 89 00 4c 89 7c 24
RSP: 0018:ffffc90000007108 EFLAGS: 00000046
RAX: 1ffff92000000e47 RBX: ffffc90000007200 RCX: ffffffff8ede12b4
RDX: ffffffff8f7b849a RSI: ffffffff8ede12a0 RDI: 0000000000000001
RBP: dffffc0000000000 R08: 000000000000000f R09: ffffc90000007250
R10: dffffc0000000000 R11: fffff52000000e4c R12: ffffffff8f7b84b2
R13: 1ffffffff1ef7096 R14: 0000000000000009 R15: ffffffff8f7b84b6
FS: 00007efea35d16c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000005c064000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
perf_callchain_kernel+0x470/0x760 arch/x86/events/core.c:2783
get_perf_callchain+0x356/0x460 kernel/events/callchain.c:200
perf_callchain kernel/events/core.c:7616 [inline]
perf_prepare_sample+0x352/0x1cb0 kernel/events/core.c:7643
__perf_event_output kernel/events/core.c:7812 [inline]
perf_event_output_forward+0x185/0x2e0 kernel/events/core.c:7832
__perf_event_overflow+0x35f/0x550 kernel/events/core.c:9525
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 82 fc 9c 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: a4801339091eac00 RBX: 1ffff92000000f64 RCX: a4801339091eac00
RDX: dffffc0000000000 RSI: ffffffff8a2b2b60 RDI: ffffffff8a7a4bc0
RBP: ffffc90000007bd8 R08: ffffffff910460cf R09: 1ffffffff2208c19
R10: dffffc0000000000 R11: fffffbfff2208c1a R12: ffffffff8d123400
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:finish_lock_switch+0x12f/0x290 kernel/sched/core.c:4804
Code: 83 c7 18 be ff ff ff ff e8 6e 70 74 08 85 c0 74 46 4d 85 ff 75 62 0f 1f 44 00 00 48 89 df e8 08 e4 7d 08 e8 a3 f2 2a 00 fb 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 48 89 df e8 2f 0e fe ff 43 80 3c 2c
RSP: 0018:ffffc900032df298 EFLAGS: 00000286
RAX: a4801339091eac00 RBX: ffff888017a8bb80 RCX: a4801339091eac00
RDX: dffffc0000000000 RSI: ffffffff8a2b2b60 RDI: ffffffff8a7a4bc0
RBP: 1ffff110171c7613 R08: ffffffff910460cf R09: 1ffffffff2208c19
R10: dffffc0000000000 R11: fffffbfff2208c1a R12: 1ffff110171c75c1
R13: dffffc0000000000 R14: ffff8880b8e3ae08 R15: 0000000000000000
finish_task_switch+0x12f/0x650 kernel/sched/core.c:4921
context_switch kernel/sched/core.c:5052 [inline]
__schedule+0x11cb/0x4350 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537
__mutex_lock_common+0xdf5/0x2400 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
register_nexthop_notifier+0x84/0x240 net/ipv4/nexthop.c:3620
ops_init+0x360/0x5f0 net/core/net_namespace.c:138
setup_net+0x39e/0xa10 net/core/net_namespace.c:333
copy_net_ns+0x33e/0x5b0 net/core/net_namespace.c:503
create_new_namespaces+0x3ce/0x700 kernel/nsproxy.c:110
copy_namespaces+0x378/0x3d0 kernel/nsproxy.c:178
copy_process+0x17f0/0x3e70 kernel/fork.c:2295
kernel_clone+0x23f/0x990 kernel/fork.c:2682
__do_sys_clone kernel/fork.c:2799 [inline]
__se_sys_clone kernel/fork.c:2783 [inline]
__x64_sys_clone+0x19a/0x210 kernel/fork.c:2783
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: 0033:0x7efea537a559
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:00007efea35d0fd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007efea5600fa0 RCX: 00007efea537a559
RDX: 0000200000000200 RSI: 0000200000000160 RDI: 0000000042160000
RBP: 00007efea5411b20 R08: 0000200000000880 R09: 0000200000000880
R10: 0000200000000240 R11: 0000000000000206 R12: 0000000000000000
R13: 00007efea5601038 R14: 00007efea5600fa0 R15: 00007ffc0936d528