watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.8.1967:13165] Modules linked in: irq event stamp: 11340165 hardirqs last enabled at (11340164): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:214 hardirqs last disabled at (11340165): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1052 softirqs last enabled at (10946904): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (10946904): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (10946904): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (10946907): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (10946907): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (10946907): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 13165 Comm: syz.8.1967 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:rcu_is_watching+0x0/0xb0 kernel/rcu/tree.c:747 Code: c7 c7 60 21 f4 8d e8 df a6 1b 03 eb cc 66 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 0f 1e fa 41 57 41 56 53 65 ff 05 50 d2 c7 10 e8 1b fd 9f 09 89 RSP: 0018:ffffc90000a07b78 EFLAGS: 00000202 RAX: ffffffff81cb719d RBX: 0000000000000001 RCX: 0000000000000100 RDX: ffff888029f79e40 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000a07c98 R08: 0000000000000000 R09: ffffffff81cb7167 R10: dffffc0000000000 R11: fffff91ffffbd005 R12: 0000000000000001 R13: dffffc0000000000 R14: ffff8880b8932a68 R15: ffffffff8de0c100 FS: 00007f60ccb4a6c0(0000) GS:ffff88812623e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe6ffff6d58 CR3: 0000000078cf8000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: rcu_read_lock include/linux/rcupdate.h:868 [inline] trace_call_bpf+0x867/0xb50 kernel/trace/bpf_trace.c:122 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+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 refdst_drop include/net/dst.h:266 [inline] skb_dst_drop include/net/dst.h:278 [inline] __dev_queue_xmit+0x85c/0x3b50 net/core/dev.c:4718 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:check_kcov_mode kernel/kcov.c:194 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x70 kernel/kcov.c:217 Code: 08 20 6e 92 65 8b 15 28 1c ae 10 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 7c 16 00 00 00 74 2c 8b 91 58 16 00 00 <83> fa 02 75 21 48 8b 91 60 16 00 00 48 8b 32 48 8d 7e 01 8b 89 5c RSP: 0018:ffffc900048a6fd8 EFLAGS: 00000246 RAX: ffffffff81c9a791 RBX: 000000000000002c RCX: ffff888029f79e40 RDX: 0000000000000002 RSI: 00000000ffffffff RDI: 0000000000000000 RBP: 00000000ffffffff R08: ffffc900048a722f R09: 0000000000000000 R10: ffffc900048a7220 R11: ffffffffa0201650 R12: 1ffff92000914e0c R13: dffffc0000000000 R14: ffffc900048a7080 R15: ffffc900048a70a0 perf_trace_buf_alloc+0x131/0x2a0 kernel/trace/trace_event_perf.c:411 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 include/linux/rcupdate.h:897 [inline] trace_call_bpf+0x79e/0xb50 kernel/trace/bpf_trace.c:147 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 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline] _raw_spin_unlock+0x16/0x50 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:391 [inline] __text_poke+0x7b1/0xa10 arch/x86/kernel/alternative.c:2588 text_poke arch/x86/kernel/alternative.c:2612 [inline] smp_text_poke_batch_finish+0x394/0x1130 arch/x86/kernel/alternative.c:2920 __static_call_transform+0x4eb/0x750 arch/x86/kernel/static_call.c:111 arch_static_call_transform+0x98/0xc0 arch/x86/kernel/static_call.c:-1 __static_call_update+0xe4/0x5d0 kernel/static_call_inline.c:147 tracepoint_update_call kernel/tracepoint.c:271 [inline] tracepoint_add_func+0x91e/0xa10 kernel/tracepoint.c:312 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: 0033:0x7f60cbd8efc9 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:00007f60ccb4a038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f60cbfe5fa0 RCX: 00007f60cbd8efc9 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000180 RBP: 00007f60cbe11f91 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f60cbfe6038 R14: 00007f60cbfe5fa0 R15: 00007ffe25dc24a8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 13161 Comm: syz.9.1966 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:check_preemption_disabled+0x1/0x120 lib/smp_processor_id.c:13 Code: 80 04 bf 8b 48 c7 c6 c0 04 bf 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 de d4 27 07 48 89 44 24 08 RSP: 0018:ffffc90000007990 EFLAGS: 00000086 RAX: ffffffff81cb719d RBX: 0000000000000000 RCX: 0000000000010000 RDX: ffff88802cb83c80 RSI: ffffffff8bbf04c0 RDI: ffffffff8bbf0480 RBP: ffffc90000007ad8 R08: 0000000000000000 R09: ffffffff81cb7167 R10: 61625f72656d6974 R11: 6b636f6c2e736573 R12: 0000000000000001 R13: dffffc0000000000 R14: ffff8880b8832b10 R15: ffffffff8de0c100 FS: 00007fe702b606c0(0000) GS:ffff88812613e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557b2285c8 CR3: 000000007e8fc000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline] rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:751 rcu_read_lock include/linux/rcupdate.h:868 [inline] trace_call_bpf+0x10f/0xb50 kernel/trace/bpf_trace.c:144 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 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline] _raw_spin_unlock_irqrestore+0x70/0x110 kernel/locking/spinlock.c:194 __run_hrtimer kernel/time/hrtimer.c:1773 [inline] __hrtimer_run_queues+0x408/0xc60 kernel/time/hrtimer.c:1841 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1903 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline] __sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1058 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:bpf_tree_comp kernel/bpf/core.c:614 [inline] RIP: 0010:__lt_find include/linux/rbtree_latch.h:115 [inline] RIP: 0010:latch_tree_find include/linux/rbtree_latch.h:210 [inline] RIP: 0010:bpf_ksym_find kernel/bpf/core.c:712 [inline] RIP: 0010:is_bpf_text_address+0x138/0x2b0 kernel/bpf/core.c:745 Code: 2c 5b 48 f7 dd 4d 8d 24 2f 49 81 c4 e0 fd ff ff 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 e7 e8 8c c0 56 00 4d 8b 24 24 <4c> 89 e7 4c 89 f6 e8 dd f1 f0 ff 4d 39 f4 76 0c e8 73 ef f0 ff b8 RSP: 0018:ffffc9000440ef70 EFLAGS: 00000246 RAX: 1ffff1100c887441 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000c932000 RSI: 00000000000224e7 RDI: 00000000000224e8 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff81cf1356 R10: ffffc9000440ed40 R11: ffffffffa0201650 R12: ffffffffa0201650 R13: dffffc0000000000 R14: 00007fe701d8efc9 R15: ffff88806443a428 kernel_text_address+0xa5/0xe0 kernel/extable.c:125 __kernel_text_address+0xd/0x40 kernel/extable.c:79 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369 arch_stack_walk+0xfc/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 save_stack+0xf5/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:308 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __slab_free+0x2e7/0x390 mm/slub.c:5954 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:352 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4962 [inline] slab_alloc_node mm/slub.c:5272 [inline] __do_kmalloc_node mm/slub.c:5633 [inline] __kvmalloc_node_noprof+0x577/0x910 mm/slub.c:7089 kvmalloc_array_node_noprof include/linux/slab.h:1122 [inline] compute_live_registers+0x132/0x1a50 kernel/bpf/verifier.c:24347 bpf_check+0x6469/0x1d620 kernel/bpf/verifier.c:24724 bpf_prog_load+0x13ba/0x19e0 kernel/bpf/syscall.c:3077 __sys_bpf+0x507/0x860 kernel/bpf/syscall.c:6149 __do_sys_bpf kernel/bpf/syscall.c:6259 [inline] __se_sys_bpf kernel/bpf/syscall.c:6257 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6257 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: 0033:0x7fe701d8efc9 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:00007fe702b60038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fe701fe5fa0 RCX: 00007fe701d8efc9 RDX: 0000000000000094 RSI: 0000200000001080 RDI: 0000000000000005 RBP: 00007fe701e11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe701fe6038 R14: 00007fe701fe5fa0 R15: 00007ffcce101968