watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.1.176:6637] Modules linked in: irq event stamp: 5335451 hardirqs last enabled at (5335450): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:200 hardirqs last disabled at (5335451): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (11724): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (11724): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (11724): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (11727): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (11727): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (11727): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 1 UID: 0 PID: 6637 Comm: syz.1.176 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:check_preemption_disabled+0x17/0x120 lib/smp_processor_id.c:14 Code: 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 53 48 83 ec 10 65 48 8b 05 be ee 26 07 48 89 44 24 08 <65> 8b 05 c6 ee 26 07 65 8b 0d bb ee 26 07 f7 c1 ff ff ff 7f 74 23 RSP: 0018:ffffc90000a07440 EFLAGS: 00000282 RAX: d89291fe8c721000 RBX: 0000000000003001 RCX: ffffffff99ab9303 RDX: 0000000000000100 RSI: ffffffff8b81abe0 RDI: ffffffff8be33300 RBP: ffffc90000a07590 R08: 0000000000000000 R09: ffffffff81eeb6ef R10: dffffc0000000000 R11: ffffffff81eeb660 R12: ffff88807d7c19f0 R13: 1ffff1100faf833e R14: 0000000000000000 R15: ffffc90000a07940 FS: 00007f85c03e16c0(0000) GS:ffff888125d1c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000013c0 CR3: 000000003263a000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: kvm_get_running_vcpu virt/kvm/kvm_main.c:6383 [inline] kvm_guest_state+0x25/0x150 virt/kvm/kvm_main.c:6401 perf_guest_state include/linux/perf_event.h:1684 [inline] should_sample_guest kernel/events/core.c:7394 [inline] perf_instruction_pointer kernel/events/core.c:7409 [inline] perf_prepare_sample+0x1d3/0x2390 kernel/events/core.c:8240 __perf_event_output kernel/events/core.c:8476 [inline] perf_event_output_forward+0x151/0x430 kernel/events/core.c:8497 __perf_event_overflow+0x7cf/0xe10 kernel/events/core.c:10372 perf_swevent_overflow kernel/events/core.c:10447 [inline] perf_swevent_event+0x2f4/0x5e0 kernel/events/core.c:-1 perf_tp_event+0x4f6/0x1380 kernel/events/core.c:10992 perf_trace_run_bpf_submit+0xee/0x170 kernel/events/core.c:10916 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:5879 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 poison_kmalloc_redzone mm/kasan/common.c:388 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:405 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4365 [inline] __kmalloc_noprof+0x27a/0x4f0 mm/slub.c:4377 kmalloc_noprof include/linux/slab.h:909 [inline] kzalloc_noprof include/linux/slab.h:1039 [inline] cfg80211_inform_single_bss_data+0x905/0x1ac0 net/wireless/scan.c:2351 cfg80211_inform_bss_data+0x1fb/0x3b30 net/wireless/scan.c:3234 cfg80211_inform_bss_frame_data+0x3d7/0x730 net/wireless/scan.c:3325 ieee80211_bss_info_update+0x746/0x9e0 net/mac80211/scan.c:226 ieee80211_scan_rx+0x593/0xa20 net/mac80211/scan.c:355 __ieee80211_rx_handle_packet net/mac80211/rx.c:5186 [inline] ieee80211_rx_list+0x201c/0x2a90 net/mac80211/rx.c:5423 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5446 ieee80211_rx include/net/mac80211.h:5210 [inline] ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:453 tasklet_action_common+0x369/0x580 kernel/softirq.c:829 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_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:finish_task_switch+0x26b/0x950 kernel/sched/core.c:5225 Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 2f b7 ea 09 e8 5a 3f 36 00 fb 4c 8b 65 c0 <49> 8d bc 24 18 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 RSP: 0018:ffffc9000df36f38 EFLAGS: 00000282 RAX: d89291fe8c721000 RBX: 0000000000000000 RCX: d89291fe8c721000 RDX: 0000000000000000 RSI: ffffffff8d9b6a41 RDI: ffffffff8be33300 RBP: ffffc9000df36f90 R08: ffffffff8fa38037 R09: 1ffffffff1f47006 R10: dffffc0000000000 R11: fffffbfff1f47007 R12: ffff88807e338000 R13: dffffc0000000000 R14: ffff88802c101e00 R15: ffff8880b873ab58 context_switch kernel/sched/core.c:5360 [inline] __schedule+0x17a0/0x4cc0 kernel/sched/core.c:6961 preempt_schedule_notrace+0xd1/0x110 kernel/sched/core.c:7238 preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13 class_preempt_notrace_destructor include/linux/preempt.h:473 [inline] __do_trace_lock_release include/trace/events/lock.h:69 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x3ca/0x3e0 kernel/locking/lockdep.c:5879 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 poison_kmalloc_redzone mm/kasan/common.c:388 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:405 kasan_kmalloc include/linux/kasan.h:260 [inline] __kmalloc_cache_node_noprof+0x234/0x3d0 mm/slub.c:4408 kmalloc_node_noprof include/linux/slab.h:928 [inline] __get_vm_area_node+0x13f/0x300 mm/vmalloc.c:3176 __vmalloc_node_range_noprof+0x301/0x12f0 mm/vmalloc.c:3853 __vmalloc_node_noprof mm/vmalloc.c:3956 [inline] __vmalloc_noprof+0xb1/0xf0 mm/vmalloc.c:3970 bpf_prog_alloc_no_stats+0x4a/0x4b0 kernel/bpf/core.c:105 bpf_prog_alloc+0x3c/0x1a0 kernel/bpf/core.c:151 bpf_prog_load+0x735/0x1930 kernel/bpf/syscall.c:2889 __sys_bpf+0x528/0x870 kernel/bpf/syscall.c:6029 __do_sys_bpf kernel/bpf/syscall.c:6139 [inline] __se_sys_bpf kernel/bpf/syscall.c:6137 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6137 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: 0033:0x7f85bf58ebe9 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:00007f85c03e1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f85bf7b6090 RCX: 00007f85bf58ebe9 RDX: 0000000000000094 RSI: 00002000000003c0 RDI: 0000000000000005 RBP: 00007f85bf611e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f85bf7b6128 R14: 00007f85bf7b6090 R15: 00007ffca3b6edd8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6631 Comm: syz.4.174 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:check_preemption_disabled+0x1/0x120 lib/smp_processor_id.c:13 Code: a0 32 e3 8b 48 c7 c6 e0 32 e3 8b eb 1c 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 <41> 57 41 56 53 48 83 ec 10 65 48 8b 05 be ee 26 07 48 89 44 24 08 RSP: 0018:ffffc90000006ab0 EFLAGS: 00000046 RAX: 0000000000000006 RBX: ffff888030e21e00 RCX: ffffffff934a5a08 RDX: 0000000000000002 RSI: ffffffff8dba5cc7 RDI: ffffffff8be33300 RBP: 0000000000000000 R08: ffffffff8fa38037 R09: 1ffffffff1f47006 R10: dffffc0000000000 R11: fffffbfff1f47007 R12: ffff888030e229e0 R13: 0000000000000000 R14: ffff888030e228f0 R15: 0000000000000006 FS: 00007fbd9cd626c0(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555677807d0 CR3: 000000007ffb0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: lockdep_recursion_finish kernel/locking/lockdep.c:470 [inline] lockdep_hardirqs_on_prepare+0x1b4/0x2a0 kernel/locking/lockdep.c:4411 trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:78 irqentry_exit+0x74/0x90 kernel/entry/common.c:200 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:interrupt_context_level include/linux/preempt.h:96 [inline] RIP: 0010:get_recursion_context kernel/events/internal.h:215 [inline] RIP: 0010:perf_swevent_get_recursion_context+0x52/0x100 kernel/events/core.c:10597 Code: f3 b0 10 89 c3 48 89 de 48 81 e6 00 00 f0 00 40 0f 95 c5 31 ff e8 ce 64 d0 ff 48 89 de 48 81 e6 00 00 ff 00 41 0f 95 c4 31 ff b9 64 d0 ff 41 00 ec 48 81 e3 00 01 ff 00 40 0f 95 c5 31 ff 48 RSP: 0018:ffffc90000006bb0 EFLAGS: 00000246 RAX: ffffffff81ef4c62 RBX: 0000000000000104 RCX: ffff888030e21e00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000006d00 R08: ffffc90000006e97 R09: 0000000000000000 R10: ffffc90000006e80 R11: fffff52000000dd3 R12: 1ffff92000000d00 R13: dffffc0000000000 R14: ffff888030e21e00 R15: dffffc0000000000 perf_trace_buf_alloc+0x59/0x2a0 kernel/trace/trace_event_perf.c:410 do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0x18d/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:5879 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock+0x93/0xa0 include/linux/rcupdate.h:871 __perf_output_begin kernel/events/ring_buffer.c:268 [inline] perf_output_begin_forward+0x9bc/0xa80 kernel/events/ring_buffer.c:277 __perf_event_output kernel/events/core.c:8479 [inline] perf_event_output_forward+0x2b2/0x430 kernel/events/core.c:8497 __perf_event_overflow+0x7cf/0xe10 kernel/events/core.c:10372 perf_swevent_overflow kernel/events/core.c:10447 [inline] perf_swevent_event+0x2f4/0x5e0 kernel/events/core.c:-1 perf_tp_event+0x4f6/0x1380 kernel/events/core.c:10992 perf_trace_run_bpf_submit+0xee/0x170 kernel/events/core.c:10916 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:5879 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:243 [inline] __kasan_slab_free+0x5b/0x80 mm/kasan/common.c:275 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2417 [inline] slab_free mm/slub.c:4680 [inline] kmem_cache_free+0x18f/0x400 mm/slub.c:4782 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+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_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0xd33/0x12d0 kernel/smp.c:877 Code: 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 b6 62 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 61 5e 0b 00 eb 38 f3 90 <42> 0f b6 04 2b 84 c0 75 11 41 f7 04 24 01 00 00 00 74 1e e8 45 5e RSP: 0018:ffffc9000def7540 EFLAGS: 00000246 RAX: ffffffff81b44e0b RBX: 1ffff110170e7f61 RCX: 0000000000080000 RDX: ffffc9000ccce000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc9000def76c0 R08: ffffffff8fa38037 R09: 1ffffffff1f47006 R10: dffffc0000000000 R11: fffffbfff1f47007 R12: ffff8880b873fb08 R13: dffffc0000000000 R14: ffff8880b863b1c0 R15: 0000000000000001 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1044 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline] flush_tlb_multi arch/x86/mm/tlb.c:1361 [inline] flush_tlb_mm_range+0x6b1/0x12d0 arch/x86/mm/tlb.c:1451 dup_mmap+0x15a0/0x1ac0 mm/mmap.c:1873 dup_mm kernel/fork.c:1485 [inline] copy_mm+0x13c/0x4b0 kernel/fork.c:1537 copy_process+0x1706/0x3c00 kernel/fork.c:2175 kernel_clone+0x21e/0x840 kernel/fork.c:2605 __do_sys_clone kernel/fork.c:2748 [inline] __se_sys_clone kernel/fork.c:2732 [inline] __x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2732 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: 0033:0x7fbd9bf8ebe9 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:00007fbd9cd61fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fbd9c1b5fa0 RCX: 00007fbd9bf8ebe9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fbd9c011e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbd9c1b6038 R14: 00007fbd9c1b5fa0 R15: 00007ffe15cc7048