rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10301 ticks this GP) idle=b07c/1/0x4000000000000000 softirq=30331/30333 fqs=5010 rcu: hardirqs softirqs csw/system rcu: number: 1052998 0 0 rcu: cputime: 18488 34001 93 ==> 52500(ms) rcu: (t=10501 jiffies g=35641 q=2375 ncpus=2) CPU: 0 PID: 9922 Comm: syz.1.823 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:skb_dequeue+0x0/0x160 net/core/skbuff.c:3693 Code: c1 0f 8c d6 fe ff ff 4c 89 f7 e8 bb 22 61 f9 e9 c9 fe ff ff e8 31 96 08 f9 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 0f 1e fa 55 41 57 41 56 41 55 41 54 53 50 49 89 fd 48 bd 00 00 RSP: 0018:ffffc90000007ce8 EFLAGS: 00000246 RAX: 98dd807811498600 RBX: ffff88805d4656c0 RCX: ffff88802a2f1e00 RDX: 0000000000000100 RSI: ffffffff8acade60 RDI: ffff8880577e9670 RBP: 0000000000000001 R08: ffffffff8e8c316f R09: 1ffffffff1d1862d R10: dffffc0000000000 R11: fffffbfff1d1862e R12: ffff88805d465640 R13: 1ffff1100ba8cad8 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f80088116c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555f68c9f8 CR3: 000000004c1a3000 CR4: 00000000003506f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: ieee80211_handle_queued_frames+0x6b/0x190 net/mac80211/main.c:312 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: 33 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 53 28 3d 09 e8 0e 23 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:ffffc9000445f7e0 EFLAGS: 00000282 RAX: 98dd807811498600 RBX: 0000000000000000 RCX: 98dd807811498600 RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: ffffffff8b1d3ba0 RBP: ffffc9000445f830 R08: ffffffff911eb52f R09: 1ffffffff223d6a5 R10: dffffc0000000000 R11: fffffbfff223d6a6 R12: ffff88802a2f1e00 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:441 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:perf_trace_init+0xa2/0x2d0 kernel/trace/trace_event_perf.c:223 Code: 20 84 18 8d 0f 84 75 01 00 00 4c 89 24 24 4c 8d 63 30 4c 89 e0 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 17 01 00 00 4d 63 24 24 <4c> 89 ff 4c 89 e6 e8 23 e3 f7 ff 4d 39 e7 0f 85 a9 00 00 00 4c 8d RSP: 0018:ffffc9000445fbd0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff8d3c9fc0 RCX: ffff88802a2f1e00 RDX: 0000000000000000 RSI: 0000000000000383 RDI: 0000000000000129 RBP: 0000000000000002 R08: ffffffff8e8c316f R09: 1ffffffff1d1862d R10: dffffc0000000000 R11: fffffbfff1d1862e R12: 0000000000000382 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000129 perf_tp_event_init+0x8d/0x110 kernel/events/core.c:10236 perf_try_init_event+0x12b/0x3c0 kernel/events/core.c:11860 perf_init_event kernel/events/core.c:11930 [inline] perf_event_alloc+0xed4/0x2150 kernel/events/core.c:12211 __do_sys_perf_event_open kernel/events/core.c:12722 [inline] __se_sys_perf_event_open+0x796/0x1d40 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: 0033:0x7f800799e159 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:00007f8008811028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f8007c25fa0 RCX: 00007f800799e159 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000500 RBP: 00007f8007a3506b R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8007c26038 R14: 00007f8007c25fa0 R15: 00007ffed6381778