rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10499 ticks this GP) idle=048c/1/0x4000000000000000 softirq=73303/73304 fqs=4800 rcu: hardirqs softirqs csw/system rcu: number: 1233545 0 0 rcu: cputime: 24225 28264 14 ==> 52520(ms) rcu: (t=10504 jiffies g=101349 q=1356 ncpus=2) CPU: 0 PID: 17192 Comm: syz.1.3770 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xc0/0x120 kernel/locking/spinlock.c:194 Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 eb 77 c3 f6 65 8b 05 0c 36 6a 75 85 c0 74 3c 48 c7 04 24 0e 36 RSP: 0018:ffffc900000073c0 EFLAGS: 00000206 RAX: dffffc0000000004 RBX: 0000000000000a02 RCX: bc3a00cf864a8c00 RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: 0000000000000001 RBP: ffffc90000007448 R08: ffffffff911ef5f7 R09: 1ffffffff223debe R10: dffffc0000000000 R11: fffffbfff223debf R12: dffffc0000000000 R13: 1ffff11005ad8a0a R14: ffff88801efa18e8 R15: 1ffff92000000e78 FS: 00007fb9ccbca6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f752bd601f8 CR3: 000000006996e000 CR4: 00000000003506f0 DR0: 0000000000000008 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __ieee80211_queue_skb_to_iface net/mac80211/rx.c:231 [inline] ieee80211_queue_skb_to_iface net/mac80211/rx.c:243 [inline] ieee80211_rx_h_mgmt+0x4a6/0x6e0 net/mac80211/rx.c:3996 ieee80211_rx_handlers+0x65b6/0xb450 net/mac80211/rx.c:4154 ieee80211_invoke_rx_handlers net/mac80211/rx.c:4184 [inline] ieee80211_prepare_and_rx_handle+0x27de/0x6080 net/mac80211/rx.c:5042 ieee80211_rx_for_interface net/mac80211/rx.c:5127 [inline] __ieee80211_rx_handle_packet net/mac80211/rx.c:5300 [inline] ieee80211_rx_list+0x28d4/0x3240 net/mac80211/rx.c:5439 ieee80211_rx_napi+0x1ae/0x3c0 net/mac80211/rx.c:5462 ieee80211_rx include/net/mac80211.h:4971 [inline] ieee80211_handle_queued_frames+0x105/0x190 net/mac80211/main.c:319 tasklet_action_common+0x2d4/0x460 kernel/softirq.c:809 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 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 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:finish_task_switch+0x267/0x8f0 kernel/sched/core.c:5256 Code: 31 09 85 c0 0f 84 30 01 00 00 48 85 db 0f 85 4f 01 00 00 0f 1f 44 00 00 4c 89 e7 e8 a3 a7 3b 09 e8 4e 1a 30 00 fb 4c 8b 65 b8 <49> 8d bc 24 00 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 RSP: 0018:ffffc9000ca27940 EFLAGS: 00000286 RAX: bc3a00cf864a8c00 RBX: 0000000000000000 RCX: bc3a00cf864a8c00 RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: ffffffff8b1d35e0 RBP: ffffc9000ca27990 R08: ffffffff911ef5ff R09: 1ffffffff223debf R10: dffffc0000000000 R11: fffffbfff223dec0 R12: ffff88807d8cbc00 R13: 1ffff110171c79a1 R14: dffffc0000000000 R15: ffff8880b8e3cd08 context_switch kernel/sched/core.c:5385 [inline] __schedule+0x15b6/0x4660 kernel/sched/core.c:6701 preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7011 irqentry_exit+0x67/0x70 kernel/entry/common.c:438 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:mutex_unlock+0x0/0x10 kernel/locking/mutex.c:543 Code: ea fd ff ff 48 8b 4c 24 18 80 e1 07 80 c1 03 38 c1 0f 8c d5 fe ff ff 48 8b 7c 24 18 e8 b9 97 47 f7 e9 c6 fe ff ff cc cc cc cc 0f 1e fa 48 8b 34 24 eb 06 66 0f 1f 44 00 00 f3 0f 1e fa 55 48 RSP: 0018:ffffc9000ca27d38 EFLAGS: 00000246 RAX: bc3a00cf864a8c00 RBX: ffff888076734400 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: ffff888076734440 RBP: ffffc9000ca27f10 R08: ffffffff911ef5ff R09: 1ffffffff223debf R10: dffffc0000000000 R11: fffffbfff223dec0 R12: 0000000000000000 R13: 1ffff92001944fb8 R14: 1ffff11009647f82 R15: ffff88807d8cbc00 __do_sys_perf_event_open kernel/events/core.c:12970 [inline] __se_sys_perf_event_open+0x182a/0x1d40 kernel/events/core.c:12609 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb9cbd9e159 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:00007fb9ccbca028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fb9cc025fa0 RCX: 00007fb9cbd9e159 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480 RBP: 00007fb9cbe3503b R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb9cc026038 R14: 00007fb9cc025fa0 R15: 00007ffd25e03388