rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=855/1/0x4000000000000000 softirq=29494/29495 fqs=2100 
	(detected by 1, t=10502 jiffies, g=39653, q=216)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11301 Comm: syz.1.1897 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:perf_swevent_overflow kernel/events/core.c:9587 [inline]
RIP: 0010:perf_swevent_event+0x2d1/0x530 kernel/events/core.c:9624
Code: df 80 3c 08 00 74 08 48 89 df e8 8a 96 25 00 48 8b 1b 48 c7 c7 ff ff ff ff 48 89 de e8 38 96 e0 ff 48 83 fb ff 4c 8b 74 24 08 <0f> 84 40 02 00 00 e8 44 92 e0 ff 4c 89 ff 31 f6 4c 89 f2 48 89 e9
RSP: 0018:ffffc900000074e8 EFLAGS: 00000017
RAX: ffffffff81988d48 RBX: 00000000017dca80 RCX: ffff88807e9bbb80
RDX: 0000000000000100 RSI: 00000000017dca80 RDI: ffffffffffffffff
RBP: ffff8880b90351c8 R08: ffff88807e9bbb87 R09: 1ffff1100fd37770
R10: dffffc0000000000 R11: ffffed100fd37771 R12: 0000000000000001
R13: ffff88807e6837a8 R14: ffffc900000075c0 R15: ffff88807e6835b8
FS:  00007fb7b87816c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbdf6526d58 CR3: 000000007706c000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 perf_tp_event+0x383/0xbf0 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 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 c2 ef 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:ffffc900000079e0 EFLAGS: 00000206
RAX: 1883dd9393a9b500 RBX: 1ffff92000000f40 RCX: 1883dd9393a9b500
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f780
RBP: ffffc90000007ac0 R08: ffffffff901d11bf R09: 1ffffffff203a237
R10: dffffc0000000000 R11: fffffbfff203a238 R12: ffffffff8c322f00
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]
 hsr_announce+0x29a/0x310 net/hsr/hsr_device.c:410
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x53a/0x7f0 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x339/0x830 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:rcu_preempt_read_enter kernel/rcu/tree_plugin.h:375 [inline]
RIP: 0010:__rcu_read_lock+0x17/0x50 kernel/rcu/tree_plugin.h:398
Code: 7f a5 58 00 e9 15 fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 53 65 48 8b 1d 47 f1 9c 7e 48 81 c3 3c 04 00 00 48 89 d8 48 c1 e8 03 <48> b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 11 ff 03 8b 03
RSP: 0018:ffffc9000348f750 EFLAGS: 00000a03
RAX: 1ffff1100fd377f7 RBX: ffff88807e9bbfbc RCX: 1883dd9393a9b500
RDX: ffff88807e9bbb80 RSI: ffffffff8a2b3a20 RDI: ffffffff8a79f780
RBP: ffffc9000348f870 R08: ffffffff8d89d8af R09: 1ffffffff1b13b15
R10: dffffc0000000000 R11: fffffbfff1b13b16 R12: 0000000000024136
R13: dffffc0000000000 R14: ffff88802c9209b8 R15: ffffffff8d617088
 rcu_read_lock include/linux/rcupdate.h:738 [inline]
 inet_twsk_purge+0x114/0x840 net/ipv4/inet_timewait_sock.c:268
 ops_exit_list net/core/net_namespace.c:177 [inline]
 setup_net+0x844/0xa10 net/core/net_namespace.c:365
 copy_net_ns+0x348/0x5b0 net/core/net_namespace.c:503
 create_new_namespaces+0x3d3/0x6f0 kernel/nsproxy.c:110
 copy_namespaces+0x37d/0x3e0 kernel/nsproxy.c:178
 copy_process+0x1834/0x3e20 kernel/fork.c:2293
 kernel_clone+0x23f/0x990 kernel/fork.c:2679
 __do_sys_clone kernel/fork.c:2796 [inline]
 __se_sys_clone kernel/fork.c:2780 [inline]
 __x64_sys_clone+0x19a/0x210 kernel/fork.c:2780
 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: 0033:0x7fb7ba525cb9
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:00007fb7b8780fd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fb7ba7a0fa0 RCX: 00007fb7ba525cb9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000c0084000
RBP: 00007fb7ba593bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fb7ba7a1038 R14: 00007fb7ba7a0fa0 R15: 00007fff08cecea8
 </TASK>