rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (7783 ticks this GP) idle=3ad4/1/0x4000000000000000 softirq=24347/24347 fqs=4035 rcu: hardirqs softirqs csw/system rcu: number: 1133253 0 0 rcu: cputime: 20912 31576 39 ==> 52500(ms) rcu: (t=10501 jiffies g=25777 q=2823 ncpus=2) CPU: 0 PID: 8649 Comm: syz.1.890 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026 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 9b ed c6 f6 65 8b 05 6c 3c 6e 75 85 c0 74 3c 48 c7 04 24 0e 36 RSP: 0018:ffffc900000073c0 EFLAGS: 00000206 RAX: dffffc0000000004 RBX: 0000000000000a02 RCX: 347ba99be329ee00 RDX: dffffc0000000000 RSI: ffffffff8acacb60 RDI: 0000000000000001 RBP: ffffc90000007448 R08: ffffffff911e75ff R09: 1ffffffff223cebf R10: dffffc0000000000 R11: fffffbfff223cec0 R12: dffffc0000000000 R13: 1ffff11004905122 R14: ffff88805c4058e8 R15: 1ffff92000000e78 FS: 00007fdb4a7866c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000007e6c9000 CR4: 00000000003506f0 DR0: 0000200000000300 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:3994 ieee80211_rx_handlers+0x65b6/0xb450 net/mac80211/rx.c:4152 ieee80211_invoke_rx_handlers net/mac80211/rx.c:4182 [inline] ieee80211_prepare_and_rx_handle+0x27de/0x6080 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+0x28d4/0x3240 net/mac80211/rx.c:5437 ieee80211_rx_napi+0x1ae/0x3c0 net/mac80211/rx.c:5460 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:5255 Code: 2e 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 43 32 38 09 e8 8e 0a 30 00 fb 4c 8b 65 b8 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 RSP: 0018:ffffc9001051f8a0 EFLAGS: 00000286 RAX: 347ba99be329ee00 RBX: 0000000000000000 RCX: 347ba99be329ee00 RDX: dffffc0000000000 RSI: ffffffff8acacb60 RDI: ffffffff8b1cfa20 RBP: ffffc9001051f8f0 R08: ffffffff8e8c6b2f R09: 1ffffffff1d18d65 R10: dffffc0000000000 R11: fffffbfff1d18d66 R12: ffff88802d671e00 R13: 1ffff110171c79a9 R14: dffffc0000000000 R15: ffff8880b8e3cd48 context_switch kernel/sched/core.c:5384 [inline] __schedule+0x15b6/0x4660 kernel/sched/core.c:6700 preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7010 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:__up_read+0xce/0x6b0 kernel/locking/rwsem.c:1343 Code: fc ff df 41 80 3c 06 00 74 08 4c 89 e7 e8 9a f2 77 00 4d 39 7f 68 74 12 80 3d 45 83 0f 0d 00 0f 84 59 03 00 00 e8 b2 51 c6 02 <48> c7 c0 e0 9f 8c 8e 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f RSP: 0018:ffffc9001051fc80 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88802d671e00 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffffffff8acadce0 RDI: ffff888021f7cfb0 RBP: ffffc9001051fd30 R08: ffffffff8e8c6b2f R09: 1ffffffff1d18d65 R10: dffffc0000000000 R11: fffffbfff1d18d66 R12: ffff888021f7d018 R13: 1ffff920020a3f94 R14: 1ffff110043efa03 R15: ffff888021f7cfb0 __do_sys_perf_event_open kernel/events/core.c:12955 [inline] __se_sys_perf_event_open+0x18a4/0x1c60 kernel/events/core.c:12601 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: 0033:0x7fdb4999de59 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:00007fdb4a786028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fdb49c25fa0 RCX: 00007fdb4999de59 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140 RBP: 00007fdb49a33e6f R08: 0000000000000002 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdb49c26038 R14: 00007fdb49c25fa0 R15: 00007ffc28d410f8