rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=b8f/1/0x4000000000000000 softirq=63479/63480 fqs=2100 (detected by 1, t=10505 jiffies, g=99477, q=944) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 19891 Comm: syz.9.3869 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:trace_lock_release include/trace/events/lock.h:58 [inline] RIP: 0010:lock_release+0xb3/0x870 kernel/locking/lockdep.c:5634 Code: 83 fb 08 0f 83 2e 05 00 00 89 d8 c1 e8 06 48 8d 3c c5 e8 91 69 8d be 08 00 00 00 e8 57 ba 5f 00 89 d8 48 0f a3 05 75 17 0d 0c <73> 0d e8 f6 34 07 00 84 c0 0f 84 34 05 00 00 48 c7 c0 84 c5 69 8d RSP: 0018:ffffc90000007300 EFLAGS: 00000057 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff815c7a69 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d6991e8 RBP: ffffc90000007410 R08: dffffc0000000000 R09: fffffbfff1ad323e R10: fffffbfff1ad323e R11: 1ffffffff1ad323d R12: 00000000ffffffe4 R13: dffffc0000000000 R14: ffffc90000007460 R15: 1ffff92000000e6c FS: 00007fde3706f6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faa91a00000 CR3: 0000000063e3d000 CR4: 00000000003506f0 DR0: 0000000000000008 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: rcu_read_unlock include/linux/rcupdate.h:772 [inline] __perf_event_output kernel/events/core.c:7813 [inline] perf_event_output_forward+0x222/0x280 kernel/events/core.c:7822 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515 perf_swevent_overflow kernel/events/core.c:9591 [inline] perf_swevent_event+0x4ad/0x530 kernel/events/core.c:9629 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10047 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021 perf_trace_preemptirq_template+0x2be/0x380 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+0x84/0x480 kernel/rcu/tree_plugin.h:674 Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 ad 13 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc90000007ae0 EFLAGS: 00000206 RAX: 619bb8175d923200 RBX: 1ffff92000000f60 RCX: 619bb8175d923200 RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: ffffffff8a59a480 RBP: ffffc90000007bb8 R08: dffffc0000000000 R09: ffffed1017207662 R10: ffffed1017207662 R11: 1ffff11017207661 R12: ffffffff8c120b00 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:771 [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:1690 [inline] __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1754 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1771 handle_softirqs+0x328/0x820 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x12f/0x220 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:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:202 Code: 66 2e 0f 1f 84 00 00 00 00 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 00 c9 f1 0b 48 89 de 5b e9 47 9e 43 00 00 00 cc cc 00 00 cc <48> 8b 04 24 65 48 8b 0d 94 a4 8a 7e 65 8b 15 95 a4 8a 7e 81 e2 00 RSP: 0018:ffffc900038dfe60 EFLAGS: 00000246 RAX: 1ffffffff1778d6d RBX: 0000000000000480 RCX: ffff88807964bb80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880483ed400 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ad323e R10: fffffbfff1ad323e R11: 1ffffffff1ad323d R12: ffffffff8bbc6b80 R13: dffffc0000000000 R14: ffff8880483ed400 R15: 0000000000000000 security_socket_setsockopt+0x7a/0xa0 security/security.c:2278 __sys_setsockopt+0x116/0x3d0 net/socket.c:2181 __do_sys_setsockopt net/socket.c:2214 [inline] __se_sys_setsockopt net/socket.c:2211 [inline] __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2211 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: 0033:0x7fde38e07ba9 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:00007fde3706f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007fde3904efa0 RCX: 00007fde38e07ba9 RDX: 0000000000000480 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007fde38e8ae19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fde3904f038 R14: 00007fde3904efa0 R15: 00007ffdff2d7668