rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=ea54/1/0x4000000000000000 softirq=12944/12945 fqs=5090
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1307895          0            0
rcu: 	cputime:    17017      35462           38   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=12877 q=1829 ncpus=2)
CPU: 0 PID: 6202 Comm: syz.3.124 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:stack_trace_consume_entry+0x56/0x270 kernel/stacktrace.c:89
Code: 84 c0 0f 85 04 01 00 00 44 8b 4f 10 4c 8d 77 08 4d 89 f5 49 c1 ed 03 41 0f b6 44 15 00 84 c0 0f 85 1d 01 00 00 45 3b 0e 73 3a <48> 8d 5f 0c 49 89 df 49 c1 ef 03 41 0f b6 04 17 84 c0 0f 85 42 01
RSP: 0018:ffffc90000007638 EFLAGS: 00000287
RAX: 0000000000000000 RBX: ffffc90000007740 RCX: ffff88807c9eda00
RDX: dffffc0000000000 RSI: ffffffff81dc1520 RDI: ffffc90000007740
RBP: 1ffff92000000eea R08: ffffc90000007750 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: ffffffff81dc1520
R13: 1ffff92000000ee9 R14: ffffc90000007748 R15: ffffc90000007688
FS:  00007f7a1d01c6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c38e54c CR3: 000000002fea0000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 arch_stack_walk+0x138/0x190 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4e/0x70 mm/kasan/common.c:52
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook+0x6e/0x4d0 mm/slab.h:767
 slab_alloc_node mm/slub.c:3495 [inline]
 kmem_cache_alloc_node+0x150/0x330 mm/slub.c:3540
 kmalloc_reserve+0x95/0x260 net/core/skbuff.c:559
 __alloc_skb+0x138/0x2c0 net/core/skbuff.c:650
 alloc_skb include/linux/skbuff.h:1284 [inline]
 wg_packet_send_keepalive+0x65/0x2b0 drivers/net/wireguard/send.c:226
 call_timer_fn+0x16e/0x530 kernel/time/timer.c:1700
 expire_timers kernel/time/timer.c:1751 [inline]
 __run_timers+0x52d/0x7d0 kernel/time/timer.c:2022
 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2035
 handle_softirqs+0x280/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x17/0x90 kernel/kcov.c:313
Code: 48 89 44 11 20 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 48 8b 04 24 65 48 8b 15 70 24 7e 7e 65 8b 0d 71 24 7e 7e <81> e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 1c 16 00 00
RSP: 0018:ffffc9000ba6fad8 EFLAGS: 00000246
RAX: ffffffff817aa30e RBX: ffffc9000ba6fb28 RCX: 0000000080000001
RDX: ffff88807c9eda00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000ba6fbd0 R08: ffffffff90da85ff R09: 1ffffffff21b50bf
R10: dffffc0000000000 R11: fffffbfff21b50c0 R12: 1ffff9200174df65
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff9200174df60
 csd_lock_wait kernel/smp.c:311 [inline]
 smp_call_function_single+0x38e/0x580 kernel/smp.c:650
 task_function_call kernel/events/core.c:120 [inline]
 perf_install_in_context+0x591/0x8e0 kernel/events/core.c:2948
 __do_sys_perf_event_open kernel/events/core.c:12915 [inline]
 __se_sys_perf_event_open+0x17fa/0x1c20 kernel/events/core.c:12567
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7a1c18f6c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7a1d01c038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f7a1c3e5fa0 RCX: 00007f7a1c18f6c9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f7a1c211f91 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7a1c3e6038 R14: 00007f7a1c3e5fa0 R15: 00007ffc58d65178
 </TASK>