watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.0.53:6085] Modules linked in: irq event stamp: 10226145 hardirqs last enabled at (10226144): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (10226145): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (10198106): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (10198106): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (10198106): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (10198109): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (10198109): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (10198109): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 6085 Comm: syz.0.53 Not tainted 6.15.0-syzkaller-ge41079f53e87 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__preempt_count_dec_and_test arch/x86/include/asm/preempt.h:95 [inline] RIP: 0010:class_preempt_notrace_destructor include/linux/preempt.h:482 [inline] RIP: 0010:__do_trace_lock_release include/trace/events/lock.h:69 [inline] RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline] RIP: 0010:lock_release+0x3b2/0x3e0 kernel/locking/lockdep.c:5882 Code: 89 fe 0f 83 9a fc ff ff 65 ff 05 f9 66 fe 10 48 8b 05 f2 00 ed 0d 48 85 c0 74 0f 48 8b 78 08 4c 89 fe 48 89 da e8 1e 40 ff ff <65> ff 0d d7 66 fe 10 49 89 dd 4d 89 fe 0f 85 65 fc ff ff e8 46 4d RSP: 0018:ffffc90000a082b8 EFLAGS: 00000246 RAX: 75ef751524014800 RBX: ffffffff81cb7f47 RCX: ffff88801df51e00 RDX: 0000000000000100 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: ffffc90000a08418 R08: ffffc90000a083af R09: 0000000000000000 R10: ffffc90000a083a0 R11: ffffffffa0203a90 R12: 00000000000002e5 R13: ffffffff81cb7f47 R14: ffffffff8e13f060 R15: ffffffff8e13f060 FS: 00007faf323d16c0(0000) GS:ffff888125d55000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000002a358000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] trace_call_bpf+0x5a9/0x850 kernel/trace/bpf_trace.c:148 perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:10866 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x2f8/0x3b0 include/trace/events/lock.h:50 __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x3b2/0x3e0 kernel/locking/lockdep.c:5882 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] class_rcu_destructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0x19a9/0x2390 arch/x86/kernel/unwind_orc.c:680 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kmem_cache_free+0x18f/0x400 mm/slub.c:4745 skb_release_data+0x62d/0x7c0 net/core/skbuff.c:1087 skb_release_all net/core/skbuff.c:1152 [inline] __kfree_skb net/core/skbuff.c:1166 [inline] consume_skb+0x9e/0xf0 net/core/skbuff.c:1398 mac80211_hwsim_beacon_tx+0x3f0/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2323 __iterate_interfaces+0x2a8/0x590 net/mac80211/util.c:761 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:797 mac80211_hwsim_beacon+0xbb/0x1c0 drivers/net/wireless/virtual/mac80211_hwsim.c:2353 __run_hrtimer kernel/time/hrtimer.c:1761 [inline] __hrtimer_run_queues+0x529/0xc60 kernel/time/hrtimer.c:1825 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1842 handle_softirqs+0x286/0x870 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:7108 Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 4b 0b 2a f6 e8 a6 1d 61 f6 fb bf 01 00 00 00 1b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc9000b66f3a0 EFLAGS: 00000286 RAX: 75ef751524014800 RBX: 0000000000000000 RCX: 75ef751524014800 RDX: 0000000000000000 RSI: ffffffff8d97cb93 RDI: 0000000000000001 RBP: ffffc9000b66f450 R08: ffffffff8fa101f7 R09: 1ffffffff1f4203e R10: dffffc0000000000 R11: fffffbfff1f4203f R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920016cde74 irqentry_exit+0x6f/0x90 kernel/entry/common.c:307 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:stack_trace_save+0xcd/0xe0 kernel/stacktrace.c:123 Code: 24 0e 36 e0 45 4a c7 04 33 00 00 00 00 42 c7 44 33 08 00 00 00 00 65 48 8b 0d df b9 ef 10 48 3b 4c 24 78 75 0e 48 8d 65 f0 5b <41> 5e 5d e9 4b 83 bb 09 cc e8 85 b1 b8 09 0f 1f 44 00 00 90 90 90 RSP: 0018:ffffc9000b66f518 EFLAGS: 00000246 RAX: 000000000000000d RBX: 0000000000000000 RCX: 75ef751524014800 RDX: 0000000000000000 RSI: ffffffff8db69634 RDI: ffff88801df51e00 RBP: ffffc9000b66f520 R08: ffffc9000b66f10f R09: 0000000000000000 R10: ffffc9000b66f100 R11: ffffffffa0203a90 R12: ffffea0000ada240 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffc9000b66f530 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x62/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2381 [inline] slab_free mm/slub.c:4643 [inline] kmem_cache_free+0x18f/0x400 mm/slub.c:4745 file_free+0x24/0x1e0 fs/file_table.c:68 __fput_deferred+0x227/0x390 fs/file_table.c:520 fput_close+0x119/0x200 fs/file_table.c:582 path_openat+0x313c/0x3830 fs/namei.c:4055 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1463 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7faf3158e929 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:00007faf323d1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007faf317b5fa0 RCX: 00007faf3158e929 RDX: 0000000000000002 RSI: 0000200000000080 RDI: ffffffffffffffff RBP: 00007faf31610b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007faf317b5fa0 R15: 00007ffcdac249a8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 3537 Comm: kworker/u8:12 Not tainted 6.15.0-syzkaller-ge41079f53e87 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0xf6e/0x12d0 kernel/smp.c:885 Code: 89 ee 83 e6 01 31 ff e8 60 78 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 0b 74 0b 00 eb 37 f3 90 43 0f b6 04 2c <84> c0 75 10 41 f7 07 01 00 00 00 74 1e e8 f0 73 0b 00 eb e5 44 89 RSP: 0018:ffffc9000c7976a0 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff8880b863cb40 RCX: ffff88803155da00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000c797800 R08: ffffffff8fa101f7 R09: 1ffffffff1f4203e R10: dffffc0000000000 R11: fffffbfff1f4203f R12: 1ffff110170e828d R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880b8741468 FS: 0000000000000000(0000) GS:ffff888125c55000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7cdfb67000 CR3: 000000000df38000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052 on_each_cpu include/linux/smp.h:71 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2660 [inline] smp_text_poke_batch_finish+0x5e0/0x1100 arch/x86/kernel/alternative.c:2870 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_disable_cpuslocked+0xc5/0x1b0 kernel/jump_label.c:240 static_key_disable+0x1a/0x20 kernel/jump_label.c:248 toggle_allocation_gate+0x1a1/0x240 mm/kfence/core.c:855 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245