watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.6.150:7045] Modules linked in: irq event stamp: 16154153 hardirqs last enabled at (16154152): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:357 hardirqs last disabled at (16154153): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (16018984): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (16018984): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (16018984): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (16018987): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (16018987): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (16018987): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 7045 Comm: syz.6.150 Not tainted 6.15.0-rc4-syzkaller-g9325d53fe9ad #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:perf_tp_filter_match kernel/events/core.c:10758 [inline] RIP: 0010:perf_tp_event_match kernel/events/core.c:10775 [inline] RIP: 0010:perf_tp_event+0x238/0x1380 kernel/events/core.c:10858 Code: 00 74 05 e8 9a 53 32 00 49 8b 9c 24 f0 02 00 00 48 85 db 49 0f 44 dc 48 81 c3 70 05 00 00 48 89 d8 48 c1 e8 03 42 80 3c 38 00 <74> 08 48 89 df e8 6e 53 32 00 48 8b 3b 48 85 ff 0f 85 ea 02 00 00 RSP: 0018:ffffc900000071c0 EFLAGS: 00000246 RAX: 1ffff110060d7172 RBX: ffff8880306b8b90 RCX: ffff8880251f1e00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8880306b8910 RBP: ffffc90000007448 R08: ffffc9000000738f R09: 0000000000000000 R10: ffffc90000007380 R11: fffff52000000e72 R12: ffff8880306b8620 R13: ffffc90000007248 R14: ffff8880b8832690 R15: dffffc0000000000 FS: 00007ff2b35ca6c0(0000) GS:ffff8881260ca000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f293a7ed008 CR3: 000000006b104000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: perf_trace_run_bpf_submit+0xee/0x170 kernel/events/core.c:10793 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:5877 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 __unwind_start+0x5b9/0x760 arch/x86/kernel/unwind_orc.c:758 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0xe4/0x150 arch/x86/kernel/stacktrace.c:24 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:2398 [inline] slab_free mm/slub.c:4656 [inline] kmem_cache_free+0x192/0x3f0 mm/slub.c:4758 mac80211_hwsim_beacon_tx+0x3f6/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2317 __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:2347 __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+0x283/0x870 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:7090 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 eb 93 39 f6 e8 86 13 70 f6 fb bf 01 00 00 00 4b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc9000b887300 EFLAGS: 00000286 RAX: 8c712cff6e1b3b00 RBX: 0000000000000000 RCX: 8c712cff6e1b3b00 RDX: 0000000000000007 RSI: ffffffff8d74a79b RDI: 0000000000000001 RBP: ffffc9000b8873b0 R08: ffffffff8f7ed277 R09: 1ffffffff1efda4e R10: dffffc0000000000 R11: fffffbfff1efda4f R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92001710e60 irqentry_exit+0x6f/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline] RIP: 0010:__slub_debug_enabled mm/slab.h:506 [inline] RIP: 0010:kmem_cache_debug_flags mm/slab.h:527 [inline] RIP: 0010:kmem_cache_debug mm/slub.c:235 [inline] RIP: 0010:kmem_cache_has_cpu_partial mm/slub.c:249 [inline] RIP: 0010:__slab_free+0x2d9/0x400 mm/slub.c:4521 Code: d0 a8 01 74 18 45 85 c0 75 0e 48 8b 45 40 48 8b 0c 24 48 3b 41 10 73 32 0f 1f 44 00 00 48 89 ef 4c 89 e6 e8 e9 b9 40 09 eb a7 <0f> 1f 44 00 00 31 c0 4d 85 c9 75 9b 84 c0 75 97 48 8b 3c 24 ba 01 RSP: 0018:ffffc9000b887478 EFLAGS: 00010202 RAX: ffff8880313d7e00 RBX: ffff8880313d7200 RCX: 000000000010000c RDX: 000000000010000d RSI: ffffea0000c4f580 RDI: ffffffff00000000 RBP: 0000000000000000 R08: 000000000000000c R09: ffff8880313d7e00 R10: 0000000000000000 R11: fffffbfff1efda4f R12: 0000000000000000 R13: 000000000010000d R14: 0000000000000000 R15: 000000000010000c qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4161 [inline] slab_alloc_node mm/slub.c:4210 [inline] __kmalloc_cache_noprof+0x1be/0x3d0 mm/slub.c:4367 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] sctp_stream_init_ext+0x57/0x180 net/sctp/stream.c:169 sctp_sendmsg_to_asoc+0x12fd/0x1810 net/sctp/socket.c:1811 sctp_sendmsg+0x1941/0x2810 net/sctp/socket.c:2032 sock_sendmsg_nosec net/socket.c:712 [inline] __sock_sendmsg+0x19c/0x270 net/socket.c:727 ____sys_sendmsg+0x505/0x830 net/socket.c:2566 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2620 __sys_sendmsg net/socket.c:2652 [inline] __do_sys_sendmsg net/socket.c:2657 [inline] __se_sys_sendmsg net/socket.c:2655 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2655 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff2b278e969 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:00007ff2b35ca038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ff2b29b5fa0 RCX: 00007ff2b278e969 RDX: 0000000000000800 RSI: 0000200000001100 RDI: 000000000000000a RBP: 00007ff2b2810ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff2b29b5fa0 R15: 00007ffd08300878 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 1089 Comm: kworker/u8:5 Not tainted 6.15.0-rc4-syzkaller-g9325d53fe9ad #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:trace_event_get_offsets_lock_acquire include/trace/events/lock.h:24 [inline] RIP: 0010:do_perf_trace_lock_acquire include/trace/events/lock.h:24 [inline] RIP: 0010:perf_trace_lock_acquire+0xa6/0x410 include/trace/events/lock.h:24 Code: f3 48 c7 44 24 60 00 00 00 00 c7 84 24 80 00 00 00 00 00 00 00 48 89 74 24 30 48 8d 5e 18 48 89 d8 48 c1 e8 03 42 80 3c 38 00 <74> 08 48 89 df e8 10 7d 84 00 48 8b 03 48 85 c0 48 c7 c7 c0 cd 6a RSP: 0018:ffffc90000a08be0 EFLAGS: 00000046 RAX: 1ffffffff3347fcb RBX: ffffffff99a3fe58 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff99a3fe40 RDI: ffffffff8de0aa00 RBP: ffffc90000a08ce0 R08: 0000000000000000 R09: 0000000000000001 R10: ffffc90000a08e48 R11: fffff520001411cb R12: 1ffff92000141184 R13: ffffffff99a3fe40 R14: ffffffff8de0aa00 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8881261ca000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f196f9b6038 CR3: 000000000dd36000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __do_trace_lock_acquire include/trace/events/lock.h:24 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x311/0x360 kernel/locking/lockdep.c:5829 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162 debug_object_assert_init+0xb4/0x380 lib/debugobjects.c:1007 debug_timer_assert_init kernel/time/timer.c:845 [inline] debug_assert_init kernel/time/timer.c:890 [inline] add_timer_on+0x43/0x570 kernel/time/timer.c:1346 handle_irq_event_percpu kernel/irq/handle.c:195 [inline] handle_irq_event+0xaf/0x1e0 kernel/irq/handle.c:210 handle_edge_irq+0x24d/0xb60 kernel/irq/chip.c:831 generic_handle_irq_desc include/linux/irqdesc.h:173 [inline] handle_irq arch/x86/kernel/irq.c:254 [inline] call_irq_handler arch/x86/kernel/irq.c:266 [inline] __common_interrupt+0x140/0x250 arch/x86/kernel/irq.c:292 common_interrupt+0xb6/0xe0 arch/x86/kernel/irq.c:285 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline] RIP: 0010:smp_call_function_many_cond+0xe69/0x11c0 kernel/smp.c:885 Code: 00 45 8b 2f 44 89 ee 83 e6 01 31 ff e8 20 6d 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 cb 68 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 b0 68 0b RSP: 0018:ffffc90003a8f700 EFLAGS: 00000293 RAX: ffffffff81b45620 RBX: ffff8880b893ad40 RCX: ffff888025eebc00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90003a8f860 R08: ffffffff8f7ed277 R09: 1ffffffff1efda4e R10: dffffc0000000000 R11: fffffbfff1efda4f R12: 1ffff11017108245 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880b8841228 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2455 [inline] text_poke_bp_batch+0x319/0x940 arch/x86/kernel/alternative.c:2665 text_poke_flush arch/x86/kernel/alternative.c:2856 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2863 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x128/0x250 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate+0xad/0x240 mm/kfence/core.c:850 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245