GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog watchdog: BUG: soft lockup - CPU#1 stuck for 132s! [kworker/u8:12:3361] Modules linked in: irq event stamp: 362815 hardirqs last enabled at (362814): [] kasan_quarantine_put+0xbb/0x1f0 mm/kasan/quarantine.c:234 hardirqs last disabled at (362815): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1062 softirqs last enabled at (362240): [] spin_unlock_bh include/linux/spinlock.h:407 [inline] softirqs last enabled at (362240): [] __ieee80211_stop_tx_ba_session+0x520/0x920 net/mac80211/agg-tx.c:331 softirqs last disabled at (362241): [] do_softirq+0x77/0xd0 kernel/softirq.c:546 CPU: 1 UID: 0 PID: 3361 Comm: kworker/u8:12 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:perf_trace_buf_alloc+0x1c7/0x280 kernel/trace/trace_event_perf.c:421 Code: 4c 89 ff e8 2b ac 65 00 4d 03 37 48 63 c3 4a 8d 3c 30 48 83 c7 f8 ba 08 00 00 00 31 f6 e8 e1 ae 65 00 4c 89 f0 48 83 c4 08 5b <41> 5c 41 5d 41 5e 41 5f 5d e9 4b b5 17 0a cc e8 75 9a f5 ff 48 8d RSP: 0018:ffffc90000a184f0 EFLAGS: 00000286 RAX: 0000000000000000 RBX: ffffffff8ec28488 RCX: ffff888033c8be80 RDX: 8000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: 00000000ffffffff R08: 0000000000000100 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff91ffffb6be2 R12: ffffffff8ec28420 R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90000a185a0 FS: 0000000000000000(0000) GS:ffff888124dc7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd5c115da08 CR3: 000000000eb48000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: do_perf_trace_lock_acquire include/trace/events/lock.h:23 [inline] perf_trace_lock_acquire+0x1a6/0x440 include/trace/events/lock.h:23 __do_trace_lock_acquire include/trace/events/lock.h:23 [inline] trace_lock_acquire include/trace/events/lock.h:23 [inline] lock_acquire+0x303/0x350 kernel/locking/lockdep.c:5905 rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] trace_call_bpf+0xd5/0xb80 kernel/trace/bpf_trace.c:-1 perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:11440 do_perf_trace_lock_acquire include/trace/events/lock.h:23 [inline] perf_trace_lock_acquire+0x346/0x440 include/trace/events/lock.h:23 __do_trace_lock_acquire include/trace/events/lock.h:23 [inline] trace_lock_acquire include/trace/events/lock.h:23 [inline] lock_acquire+0x303/0x350 kernel/locking/lockdep.c:5905 rcu_lock_acquire include/linux/rcupdate.h:309 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] class_rcu_constructor include/linux/rcupdate.h:1216 [inline] unwind_next_frame+0xac/0x2550 arch/x86/kernel/unwind_orc.c:495 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122 save_stack+0x122/0x230 mm/page_owner.c:183 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:338 reset_page_owner include/linux/page_owner.h:26 [inline] __free_pages_prepare mm/page_alloc.c:1418 [inline] __free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2650 [inline] rcu_core+0x926/0x1260 kernel/rcu/tree.c:2919 handle_softirqs+0x226/0x860 kernel/softirq.c:645 do_softirq+0x77/0xd0 kernel/softirq.c:546 __local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473 spin_unlock_bh include/linux/spinlock.h:407 [inline] __ieee80211_stop_tx_ba_session+0x520/0x920 net/mac80211/agg-tx.c:331 ieee80211_sta_tear_down_BA_sessions+0x27d/0x5c0 net/mac80211/ht.c:300 __sta_info_destroy_part2+0x6a/0x410 net/mac80211/sta_info.c:1567 __sta_info_destroy+0x44/0x50 net/mac80211/sta_info.c:1629 ieee80211_ibss_sta_expire net/mac80211/ibss.c:1221 [inline] ieee80211_sta_merge_ibss net/mac80211/ibss.c:1239 [inline] ieee80211_ibss_work+0x81d/0x1060 net/mac80211/ibss.c:1640 cfg80211_wiphy_work+0x29e/0x420 net/wireless/core.c:564 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 7767 Comm: kworker/u8:14 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:363 [inline] RIP: 0010:csd_lock kernel/smp.c:396 [inline] RIP: 0010:smp_call_function_many_cond+0x61e/0x1500 kernel/smp.c:944 Code: b6 04 04 84 c0 0f 85 d5 03 00 00 44 8b 3b 44 89 fe 83 e6 01 31 ff e8 01 59 0c 00 41 83 e7 01 75 07 e8 f6 53 0c 00 eb 3f f3 90 <48> b8 00 00 00 00 00 fc ff df 41 0f b6 04 04 84 c0 75 0f f7 03 01 RSP: 0000:ffffc9000342f720 EFLAGS: 00000293 RAX: ffffffff81bbbb7e RBX: ffff8880b87414c8 RCX: ffff88805012ddc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000342f870 R08: ffff88805012f35f R09: 1ffff1100a025e6b R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff110170e8299 R13: 0000000000000001 R14: ffff8880b87414c0 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888124cc7000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f89255ef2f8 CR3: 000000000eb48000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: on_each_cpu include/linux/smp.h:71 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2641 [inline] smp_text_poke_batch_finish+0x5fd/0x1110 arch/x86/kernel/alternative.c:2851 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x128/0x240 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate+0xab/0x290 mm/kfence/core.c:902 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245