rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (7278 ticks this GP) idle=0c74/1/0x4000000000000000 softirq=13258/13258 fqs=5202 rcu: hardirqs softirqs csw/system rcu: number: 1392103 2 0 rcu: cputime: 17474 35015 53 ==> 52500(ms) rcu: (t=10501 jiffies g=13049 q=1686 ncpus=2) CPU: 1 PID: 6389 Comm: syz.2.176 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 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 2b 88 ca f6 65 8b 05 bc b0 71 75 85 c0 74 3c 48 c7 04 24 0e 36 RSP: 0018:ffffc900001f03e0 EFLAGS: 00000206 RAX: dffffc0000000004 RBX: 0000000000000a06 RCX: ed0e7879d4217f00 RDX: dffffc0000000000 RSI: ffffffff8acacbe0 RDI: 0000000000000001 RBP: ffffc900001f0460 R08: ffffffff911cd5f7 R09: 1ffffffff2239abe R10: dffffc0000000000 R11: fffffbfff2239abf R12: dffffc0000000000 R13: 1ffff1100633a20a R14: ffff88805e52d8e8 R15: 1ffff9200003e07c FS: 00007f747a1f66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000002cd9e000 CR4: 00000000003506e0 DR0: 0000000000000000 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+0x4ae/0x6f0 net/mac80211/rx.c:3994 ieee80211_rx_handlers+0x65f9/0xb4a0 net/mac80211/rx.c:4152 ieee80211_invoke_rx_handlers net/mac80211/rx.c:4182 [inline] ieee80211_prepare_and_rx_handle+0x29ab/0x62c0 net/mac80211/rx.c:5040 ieee80211_rx_for_interface net/mac80211/rx.c:5125 [inline] __ieee80211_rx_handle_packet net/mac80211/rx.c:5298 [inline] ieee80211_rx_list+0x295e/0x32d0 net/mac80211/rx.c:5437 ieee80211_rx_napi+0x1b2/0x3d0 net/mac80211/rx.c:5460 ieee80211_rx include/net/mac80211.h:4971 [inline] ieee80211_handle_queued_frames+0x106/0x1a0 net/mac80211/main.c:319 tasklet_action_common+0x302/0x4d0 kernel/softirq.c:809 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+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:__mutex_trylock_common+0x23e/0x260 kernel/locking/mutex.c:137 Code: b9 00 00 00 00 00 fc ff df 41 c6 44 0d 04 f8 48 c7 44 24 20 0e 36 e0 45 49 c7 44 0d 00 00 00 00 00 65 48 8b 0c 25 28 00 00 00 <48> 3b 4c 24 60 75 0f 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 RSP: 0018:ffffc9001a0b7b20 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc9001a0b7b60 RCX: ed0e7879d4217f00 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9001a0b7b60 RBP: ffffc9001a0b7bd0 R08: ffffc9001a0b7b67 R09: 1ffff92003416f6c R10: dffffc0000000000 R11: fffff52003416f6d R12: ffff88802c1b3c00 R13: 1ffff92003416f68 R14: ffff88802c1b5028 R15: ffff88802c1b3c00 __mutex_trylock kernel/locking/mutex.c:152 [inline] __mutex_lock_common kernel/locking/mutex.c:606 [inline] __mutex_lock+0x151/0xcc0 kernel/locking/mutex.c:747 __do_sys_perf_event_open kernel/events/core.c:12967 [inline] __se_sys_perf_event_open+0x18b4/0x1c50 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: 0033:0x7f747bf9ce59 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:00007f747a1f6028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f747c215fa0 RCX: 00007f747bf9ce59 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140 RBP: 00007f747c032d6f R08: 0000000000000002 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f747c216038 R14: 00007f747c215fa0 R15: 00007ffc0790b558