rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (10500 ticks this GP) idle=50dc/1/0x4000000000000000 softirq=11082/11102 fqs=4132 rcu: hardirqs softirqs csw/system rcu: number: 1214331 0 0 rcu: cputime: 20634 31834 33 ==> 52470(ms) rcu: (t=10500 jiffies g=8917 q=1147 ncpus=2) CPU: 1 PID: 5947 Comm: syz.0.19 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa9/0x110 kernel/locking/spinlock.c:194 Code: 74 05 e8 ca 2b 13 f7 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 a2 a6 e2 f6 65 8b 05 93 ed 8a 75 85 c0 74 3c 48 c7 04 24 0e 36 RSP: 0018:ffffc900001f0380 EFLAGS: 00000206 RAX: bf780154b525a500 RBX: 0000000000000a02 RCX: bf780154b525a500 RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: 0000000000000001 RBP: ffffc900001f0410 R08: ffffffff90da95ff R09: 1ffffffff21b52bf R10: dffffc0000000000 R11: fffffbfff21b52c0 R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff88807e0806b8 R15: 1ffff9200003e070 FS: 00005555770e2500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000021fc2000 CR4: 00000000003506e0 Call Trace: spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] wiphy_work_queue+0x151/0x1a0 net/wireless/core.c:1638 __ieee80211_queue_skb_to_iface net/mac80211/rx.c:232 [inline] ieee80211_queue_skb_to_iface net/mac80211/rx.c:243 [inline] ieee80211_rx_h_mgmt+0x4f8/0x6f0 net/mac80211/rx.c:3989 ieee80211_rx_handlers+0x64f0/0xb0c0 net/mac80211/rx.c:4147 ieee80211_invoke_rx_handlers net/mac80211/rx.c:4177 [inline] ieee80211_prepare_and_rx_handle+0x25fe/0x61d0 net/mac80211/rx.c:5035 ieee80211_rx_for_interface net/mac80211/rx.c:5120 [inline] __ieee80211_rx_handle_packet net/mac80211/rx.c:5293 [inline] ieee80211_rx_list+0x28ae/0x31f0 net/mac80211/rx.c:5432 ieee80211_rx_napi+0x1aa/0x3c0 net/mac80211/rx.c:5455 ieee80211_rx include/net/mac80211.h:4971 [inline] ieee80211_handle_queued_frames+0x106/0x1a0 net/mac80211/main.c:319 tasklet_action_common+0x2eb/0x4c0 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+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 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:preempt_schedule_irq+0xb0/0x140 kernel/sched/core.c:7009 Code: 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 63 bf 01 00 00 00 e8 4b 06 e4 f6 e8 e6 8c 14 f7 fb bf 01 00 00 00 db b5 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc9000468fd60 EFLAGS: 00000286 RAX: bf780154b525a500 RBX: 0000000000000000 RCX: bf780154b525a500 RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: 0000000000000001 RBP: ffffc9000468fe10 R08: ffffffff8e4a93ef R09: 1ffffffff1c9527d R10: dffffc0000000000 R11: fffffbfff1c9527e R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920008d1fac 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:exit_to_user_mode_loop+0x40/0x110 kernel/entry/common.c:164 Code: fb eb 1d e8 02 a9 fc 08 65 48 8b 05 da 2b 91 7e 4c 8b 30 41 f7 c6 0e 30 02 00 0f 84 c4 00 00 00 e8 d5 69 19 00 fb 41 f6 c6 08 <74> 05 e8 99 d7 04 09 41 f7 c6 00 10 00 00 74 08 48 89 df e8 28 ea RSP: 0018:ffffc9000468fed0 EFLAGS: 00000246 RAX: bf780154b525a500 RBX: ffffc9000468ff58 RCX: bf780154b525a500 RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: ffffffff8afc6f80 RBP: ffffc9000468ff48 R08: ffffffff8e4a93ef R09: 1ffffffff1c9527d R10: dffffc0000000000 R11: fffffbfff1c9527e R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000002 R15: ffff88802b2ada00 exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f59e298f749 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:00007ffcd5b6ed38 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 0000000000018bce RCX: 00007f59e298f749 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000001 R09: 00000003d5b6f02f R10: 0000001b2c820000 R11: 0000000000000246 R12: 00007f59e2be5fac R13: 00007f59e2be5fa0 R14: ffffffffffffffff R15: 0000000000000003