watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.7.726:9187] Modules linked in: irq event stamp: 6517553 hardirqs last enabled at (6517552): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:214 hardirqs last disabled at (6517553): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1052 softirqs last enabled at (117490): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (117490): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (117490): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (117825): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (117825): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (117825): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 9187 Comm: syz.7.726 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:kasan_save_track+0x6a/0x80 mm/kasan/common.c:79 Code: ff 89 c6 89 da b9 01 00 00 00 e8 41 f3 9b 02 65 48 8b 0c 25 08 30 6e 92 8b 89 18 06 00 00 41 89 0e 41 89 46 04 48 8d 65 e8 5b <41> 5e 41 5f 5d e9 4c a2 23 09 cc 66 66 2e 0f 1f 84 00 00 00 00 00 RSP: 0018:ffffc90000a07bd0 EFLAGS: 00000286 RAX: 00000000031603f9 RBX: ffffed100aea4878 RCX: 00000000000023e3 RDX: 000000001df664c8 RSI: 0000000000000001 RDI: 00000000cb736110 RBP: ffffc90000a07be0 R08: 0000000048c5de56 R09: 000000009ec5bc4a R10: 0000000000000019 R11: fffff91ffffbb805 R12: ffffea00015d4900 R13: 0000000000000000 R14: ffff8880575243c8 R15: ffffc90000a079b0 FS: 00007feba4d796c0(0000) GS:ffff88812623d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000028566000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:587 kasan_save_free_info mm/kasan/kasan.h:406 [inline] poison_slab_object mm/kasan/common.c:252 [inline] __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284 kasan_slab_free include/linux/kasan.h:234 [inline] slab_free_hook mm/slub.c:2539 [inline] slab_free mm/slub.c:6630 [inline] kmem_cache_free+0x19b/0x690 mm/slub.c:6740 kfree_skb_reason include/linux/skbuff.h:1322 [inline] dev_kfree_skb_any_reason+0x111/0x120 net/core/dev.c:3442 dev_kfree_skb_any include/linux/netdevice.h:4169 [inline] ieee80211_free_txskb net/mac80211/status.c:1294 [inline] ieee80211_tx_status_irqsafe+0x110/0x210 net/mac80211/status.c:36 drv_tx net/mac80211/driver-ops.h:38 [inline] wake_tx_push_queue net/mac80211/util.c:298 [inline] ieee80211_handle_wake_tx_queue+0x191/0x2a0 net/mac80211/util.c:315 drv_wake_tx_queue net/mac80211/driver-ops.h:1394 [inline] schedule_and_wake_txq net/mac80211/driver-ops.h:1401 [inline] ieee80211_queue_skb+0x1a31/0x21c0 net/mac80211/tx.c:1662 ieee80211_tx+0x297/0x460 net/mac80211/tx.c:1966 __ieee80211_subif_start_xmit+0xccf/0x1610 net/mac80211/tx.c:4342 ieee80211_subif_start_xmit+0xe0/0x510 net/mac80211/tx.c:4538 __netdev_start_xmit include/linux/netdevice.h:5248 [inline] netdev_start_xmit include/linux/netdevice.h:5257 [inline] xmit_one net/core/dev.c:3845 [inline] dev_hard_start_xmit+0x2d7/0x830 net/core/dev.c:3861 __dev_queue_xmit+0x1b8d/0x3b50 net/core/dev.c:4763 dev_queue_xmit include/linux/netdevice.h:3365 [inline] neigh_hh_output include/net/neighbour.h:531 [inline] neigh_output include/net/neighbour.h:545 [inline] ip6_finish_output2+0xf70/0x1480 net/ipv6/ip6_output.c:136 NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip6_output+0x340/0x550 net/ipv6/ip6_output.c:247 NF_HOOK include/linux/netfilter.h:318 [inline] ndisc_send_skb+0xbce/0x1510 net/ipv6/ndisc.c:512 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4037 call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1798 [inline] __run_timers kernel/time/timer.c:2372 [inline] __run_timer_base+0x61a/0x860 kernel/time/timer.c:2384 run_timer_base kernel/time/timer.c:2393 [inline] run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403 handle_softirqs+0x286/0x870 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:lock_acquire+0x277/0x360 kernel/locking/lockdep.c:-1 Code: 01 90 48 c7 c7 35 ac 6f 8d e8 35 cc e5 ff 90 0f 0b 90 90 83 3d 29 a8 df 0d 00 0f 85 10 fe ff ff e9 fb fe ff ff e8 69 ec a8 09 0f 1e fa 4c 89 6c 24 18 4c 89 64 24 20 4c 89 7c 24 28 4c 89 74 RSP: 0018:ffffc90004276940 EFLAGS: 00000282 RAX: 27835025c2881b00 RBX: 0000000000000000 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8df3d620 RBP: ffffffff81cb8407 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff91ffffb6c05 R12: 0000000000000002 R13: ffffffff8df3d620 R14: 0000000000000000 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:867 [inline] trace_call_bpf+0xe8/0xb50 kernel/trace/bpf_trace.c:-1 perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:10931 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:897 [inline] class_rcu_destructor include/linux/rcupdate.h:1195 [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+0x3e/0x60 mm/kasan/common.c:56 kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:559 __call_rcu_common kernel/rcu/tree.c:3123 [inline] call_rcu+0x157/0x9c0 kernel/rcu/tree.c:3243 context_switch kernel/sched/core.c:5328 [inline] __schedule+0x17a0/0x4cc0 kernel/sched/core.c:6929 preempt_schedule_notrace+0xd1/0x110 kernel/sched/core.c:7206 preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13 class_preempt_notrace_destructor include/linux/preempt.h:471 [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:897 [inline] pte_unmap include/linux/pgtable.h:136 [inline] __text_poke+0x83e/0xa10 arch/x86/kernel/alternative.c:2588 text_poke arch/x86/kernel/alternative.c:2612 [inline] smp_text_poke_batch_finish+0x90a/0x1130 arch/x86/kernel/alternative.c:2945 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 tracepoint_add_func+0x994/0xa10 kernel/tracepoint.c:315 tracepoint_probe_register_prio kernel/tracepoint.c:464 [inline] tracepoint_probe_register+0x5d/0x90 kernel/tracepoint.c:484 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] perf_trace_event_init+0x4e1/0x9d0 kernel/trace/trace_event_perf.c:202 perf_trace_init+0x23d/0x2d0 kernel/trace/trace_event_perf.c:226 perf_tp_event_init+0x8d/0x120 kernel/events/core.c:10872 perf_try_init_event+0x17f/0x870 kernel/events/core.c:12605 perf_init_event kernel/events/core.c:12703 [inline] perf_event_alloc+0x133e/0x2be0 kernel/events/core.c:12978 __do_sys_perf_event_open kernel/events/core.c:13496 [inline] __se_sys_perf_event_open+0x772/0x1d70 kernel/events/core.c:13377 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7feba3f8f6c9 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:00007feba4d79038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007feba41e5fa0 RCX: 00007feba3f8f6c9 RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000200000000040 RBP: 00007feba4011f91 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007feba41e6038 R14: 00007feba41e5fa0 R15: 00007ffc528af418 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 9169 Comm: syz.4.723 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:asm_sysvec_apic_timer_interrupt+0x0/0x20 arch/x86/include/asm/idtentry.h:697 Code: 36 36 46 0a e9 61 06 00 00 90 f3 0f 1e fa 0f 01 ca fc 6a ff e8 11 05 00 00 48 89 c4 48 89 e7 e8 46 35 46 0a e9 41 06 00 00 90 0f 1e fa 0f 01 ca fc 6a ff e8 f1 04 00 00 48 89 c4 48 89 e7 e8 RSP: 0018:ffffc900000065d8 EFLAGS: 00000086 RAX: 3f3b71dc50759600 RBX: 0000000000000000 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8df3d620 RBP: ffffffff81cb8407 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff91ffff9b805 R12: 0000000000000002 R13: ffffffff8df3d620 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f56669976c0(0000) GS:ffff88812613d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556e3db808 CR3: 0000000031256000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: RIP: 0010:lock_acquire+0x277/0x360 kernel/locking/lockdep.c:-1 Code: 01 90 48 c7 c7 35 ac 6f 8d e8 35 cc e5 ff 90 0f 0b 90 90 83 3d 29 a8 df 0d 00 0f 85 10 fe ff ff e9 fb fe ff ff e8 69 ec a8 09 0f 1e fa 4c 89 6c 24 18 4c 89 64 24 20 4c 89 7c 24 28 4c 89 74 RSP: 0018:ffffc90000006600 EFLAGS: 00000286 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:867 [inline] trace_call_bpf+0xe8/0xb50 kernel/trace/bpf_trace.c:-1 perf_trace_run_bpf_submit+0x78/0x170 kernel/events/core.c:10931 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:897 [inline] class_rcu_destructor include/linux/rcupdate.h:1195 [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:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 poison_kmalloc_redzone mm/kasan/common.c:400 [inline] __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:417 kasan_kmalloc include/linux/kasan.h:262 [inline] __do_kmalloc_node mm/slub.c:5642 [inline] __kmalloc_noprof+0x411/0x7f0 mm/slub.c:5654 kmalloc_noprof include/linux/slab.h:961 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] ieee802_11_parse_elems_full+0x152/0x2ab0 net/mac80211/parse.c:1011 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2470 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2477 [inline] ieee80211_inform_bss+0x10c/0x10a0 net/mac80211/scan.c:79 rdev_inform_bss net/wireless/rdev-ops.h:418 [inline] cfg80211_inform_single_bss_data+0xd05/0x1ac0 net/wireless/scan.c:2385 cfg80211_inform_bss_data+0x203/0x3b40 net/wireless/scan.c:3240 cfg80211_inform_bss_frame_data+0x3d7/0x730 net/wireless/scan.c:3331 ieee80211_bss_info_update+0x749/0x9e0 net/mac80211/scan.c:226 ieee80211_scan_rx+0x593/0xa20 net/mac80211/scan.c:355 __ieee80211_rx_handle_packet net/mac80211/rx.c:5194 [inline] ieee80211_rx_list+0x210c/0x2b90 net/mac80211/rx.c:5447 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5470 ieee80211_rx include/net/mac80211.h:5214 [inline] ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:453 tasklet_action_common+0x36c/0x580 kernel/softirq.c:925 handle_softirqs+0x286/0x870 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:7256 Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 10 00 00 00 74 64 bf 01 00 00 00 e8 3b 84 48 f6 e8 d6 59 80 f6 fb bf 01 00 00 00 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc9000abaf260 EFLAGS: 00000286 RAX: 3f3b71dc50759600 RBX: 0000000000000000 RCX: 3f3b71dc50759600 RDX: 0000000000000006 RSI: ffffffff8d70d468 RDI: 0000000000000001 RBP: ffffc9000abaf310 R08: ffffffff8f7cdc77 R09: 1ffffffff1ef9b8e R10: dffffc0000000000 R11: fffffbfff1ef9b8f R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92001575e4c irqentry_exit+0x6f/0x90 kernel/entry/common.c:211 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:rep_movs_alternative+0x4a/0x90 arch/x86/lib/copy_user_64.S:74 Code: 31 04 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 db 83 f9 08 73 e8 eb c5 a4 c3 cc cc cc cc 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 RSP: 0018:ffffc9000abaf3d8 EFLAGS: 00050206 RAX: ffffffff84872101 RBX: ffff888028210000 RCX: 0000000000002f00 RDX: 0000000000000000 RSI: ffff888028215100 RDI: 0000200000113000 RBP: ffffc9000abaf558 R08: ffff888028217fff R09: 1ffff11005042fff R10: dffffc0000000000 R11: ffffed1005043000 R12: 1ffff92001575fbf R13: 000020000010df00 R14: ffffc9000abafe08 R15: 0000000000008000 copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:147 [inline] copy_to_user_iter lib/iov_iter.c:25 [inline] iterate_ubuf include/linux/iov_iter.h:30 [inline] iterate_and_advance2 include/linux/iov_iter.h:302 [inline] iterate_and_advance include/linux/iov_iter.h:330 [inline] _copy_to_iter+0x24f/0x1790 lib/iov_iter.c:185 copy_to_iter include/linux/uio.h:220 [inline] simple_copy_to_iter net/core/datagram.c:521 [inline] __skb_datagram_iter+0x41a/0x990 net/core/datagram.c:435 skb_copy_datagram_iter+0xc5/0x230 net/core/datagram.c:535 skb_copy_datagram_msg include/linux/skbuff.h:4217 [inline] unix_stream_read_actor+0x6c/0xb0 net/unix/af_unix.c:3135 unix_stream_read_generic+0xac3/0x2470 net/unix/af_unix.c:3058 unix_stream_recvmsg+0x15d/0x1b0 net/unix/af_unix.c:3172 sock_recvmsg_nosec net/socket.c:1078 [inline] sock_recvmsg+0x22c/0x270 net/socket.c:1100 ____sys_recvmsg+0x1c9/0x460 net/socket.c:2850 ___sys_recvmsg+0x1b5/0x510 net/socket.c:2892 __sys_recvmsg net/socket.c:2925 [inline] __do_sys_recvmsg net/socket.c:2931 [inline] __se_sys_recvmsg net/socket.c:2928 [inline] __x64_sys_recvmsg+0x198/0x260 net/socket.c:2928 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5665b8f6c9 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:00007f5666997038 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007f5665de5fa0 RCX: 00007f5665b8f6c9 RDX: 0000000040000100 RSI: 0000200000001140 RDI: 0000000000000008 RBP: 00007f5665c11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f5665de6038 R14: 00007f5665de5fa0 R15: 00007ffc965cfcc8