watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.1.146:6299] Modules linked in: irq event stamp: 11439211 hardirqs last enabled at (11439210): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 hardirqs last disabled at (11439211): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1088 softirqs last enabled at (7792428): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last enabled at (7792428): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last enabled at (7792428): [] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 softirqs last disabled at (7792431): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last disabled at (7792431): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last disabled at (7792431): [] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 CPU: 1 PID: 6299 Comm: syz.1.146 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:do_raw_write_lock+0x0/0x260 kernel/locking/spinlock_debug.c:208 Code: fe ff ff eb d5 44 89 f1 80 e1 07 80 c1 03 38 c1 7c bf 4c 89 f7 e8 00 fc 75 00 eb b5 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 RSP: 0018:ffffc900001f0ab8 EFLAGS: 00000292 RAX: d363cc8e79601300 RBX: ffff88807f8d0700 RCX: d363cc8e79601300 RDX: 0000000000000000 RSI: ffffffff8acadce0 RDI: ffff88807f8d0568 RBP: ffffc900001f0b90 R08: dffffc0000000000 R09: 1ffffffff22378b1 R10: dffffc0000000000 R11: fffffbfff22378b2 R12: ffffc900001f0b20 R13: 1ffff9200003e160 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f8787f076c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8787ee6d58 CR3: 000000002ea4a000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: addrconf_rs_timer+0x377/0x640 net/ipv6/addrconf.c:4034 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701 expire_timers kernel/time/timer.c:1752 [inline] __run_timers+0x570/0x810 kernel/time/timer.c:2023 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline] RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline] RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline] RIP: 0010:wrmsrl arch/x86/include/asm/msr.h:262 [inline] RIP: 0010:native_x2apic_icr_write arch/x86/include/asm/apic.h:217 [inline] RIP: 0010:__x2apic_send_IPI_dest arch/x86/kernel/apic/x2apic_phys.c:113 [inline] RIP: 0010:x2apic_send_IPI+0x74/0xd0 arch/x86/kernel/apic/x2apic_phys.c:50 Code: f0 48 c1 e8 03 42 0f b6 04 20 84 c0 75 37 41 0f b7 16 0f ae f0 0f ae e8 83 fb 02 b8 00 04 00 00 0f 45 c3 b9 30 08 00 00 0f 30 <66> 90 5b 41 5c 41 5e 41 5f c3 48 c7 c7 80 ac f9 8c 4c 89 f6 e8 83 RSP: 0018:ffffc9000bbb7738 EFLAGS: 00000206 RAX: 00000000000000fb RBX: 00000000000000fb RCX: 0000000000000830 RDX: 0000000000000000 RSI: 00000000000000fb RDI: 0000000000000000 RBP: ffffc9000bbb78e0 R08: ffffffff8e8ae5ef R09: 1ffffffff1d15cbd R10: dffffc0000000000 R11: fffffbfff1d15cbe R12: dffffc0000000000 R13: 0000000000000000 R14: ffff8880b8e219d0 R15: ffffffff8ca7aa30 arch_send_call_function_single_ipi arch/x86/include/asm/smp.h:103 [inline] send_call_function_single_ipi kernel/smp.c:117 [inline] smp_call_function_many_cond+0xa29/0x1190 kernel/smp.c:837 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1022 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2222 [inline] text_poke_bp_batch+0x643/0x980 arch/x86/kernel/alternative.c:2494 text_poke_flush arch/x86/kernel/alternative.c:2623 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2630 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x123/0x240 kernel/jump_label.c:207 static_key_enable+0x1a/0x20 kernel/jump_label.c:220 tracepoint_add_func+0x985/0xa10 kernel/tracepoint.c:363 tracepoint_probe_register_prio kernel/tracepoint.c:513 [inline] tracepoint_probe_register+0x5e/0x90 kernel/tracepoint.c:533 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] perf_trace_event_init+0x4d4/0x9b0 kernel/trace/trace_event_perf.c:202 perf_trace_init+0x238/0x2d0 kernel/trace/trace_event_perf.c:226 perf_tp_event_init+0x8d/0x110 kernel/events/core.c:10228 perf_try_init_event+0x12b/0x3c0 kernel/events/core.c:11852 perf_init_event kernel/events/core.c:11922 [inline] perf_event_alloc+0xed4/0x2150 kernel/events/core.c:12203 __do_sys_perf_event_open kernel/events/core.c:12710 [inline] __se_sys_perf_event_open+0x61f/0x1c60 kernel/events/core.c:12601 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f8786f9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8787f07028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f8787215fa0 RCX: 00007f8786f9ce59 RDX: 0000000000000001 RSI: ffffffffffffffff RDI: 00002000000000c0 RBP: 00007f8787032e6f R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8787216038 R14: 00007f8787215fa0 R15: 00007ffc9d3e6a78 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5779 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:lock_release+0x7b3/0x8c0 kernel/locking/lockdep.c:-1 Code: e8 82 cc 76 00 e9 bf fb ff ff 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 0f 8c cc fb ff ff 48 8b 3c 24 e8 62 cc 76 00 e9 be fb ff ff <4d> 89 e6 4c 89 7c 24 08 65 8b 05 fa 2a 9b 7e 83 f8 08 0f 83 e0 00 RSP: 0000:ffffc900043e7200 EFLAGS: 00000802 RAX: f2f2f2f8f1f1f1f1 RBX: ffffffff8190cb53 RCX: ffff88802be9bc00 RDX: 0000000000000000 RSI: ffffffff8190cb53 RDI: ffffffff8d131da0 RBP: ffffc900043e7310 R08: ffffc900043e73af R09: 0000000000000000 R10: ffffc900043e73a0 R11: fffff5200087ce76 R12: ffffffff8190cb53 R13: dffffc0000000000 R14: ffff88802dada028 R15: 1ffff9200087ce4c FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4114349000 CR3: 0000000020d94000 CR4: 00000000003506f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: rcu_lock_release include/linux/rcupdate.h:344 [inline] rcu_read_unlock include/linux/rcupdate.h:819 [inline] trace_call_bpf+0x5dd/0x6c0 kernel/trace/bpf_trace.c:145 perf_trace_run_bpf_submit+0x7a/0x1c0 kernel/events/core.c:10287 perf_trace_preemptirq_template+0x269/0x330 include/trace/events/preemptirq.h:14 trace_irq_enable+0xbb/0xe0 include/trace/events/preemptirq.h:40 trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:56 mod_lruvec_page_state include/linux/vmstat.h:569 [inline] lruvec_stat_mod_folio include/linux/vmstat.h:645 [inline] lruvec_stat_sub_folio+0x18d/0x320 include/linux/vmstat.h:657 pagetable_pte_dtor include/linux/mm.h:3000 [inline] ___pte_free_tlb+0x87/0x130 arch/x86/mm/pgtable.c:55 __pte_free_tlb arch/x86/include/asm/pgalloc.h:61 [inline] free_pte_range mm/memory.c:194 [inline] free_pmd_range mm/memory.c:212 [inline] free_pud_range mm/memory.c:246 [inline] free_p4d_range mm/memory.c:280 [inline] free_pgd_range+0x666/0xb30 mm/memory.c:360 free_pgtables+0x697/0x770 mm/memory.c:-1 exit_mmap+0x420/0xb90 mm/mmap.c:3313 __mmput+0x118/0x3a0 kernel/fork.c:1357 exit_mm+0x23f/0x340 kernel/exit.c:570 do_exit+0x909/0x2530 kernel/exit.c:871 do_group_exit+0x22d/0x2f0 kernel/exit.c:1026 get_signal+0x12a6/0x1390 kernel/signal.c:2903 arch_do_signal_or_restart+0xc2/0x7b0 arch/x86/kernel/signal.c:310 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f02bfd5d68e Code: Unable to access opcode bytes at 0x7f02bfd5d664. RSP: 002b:00007fff81162358 EFLAGS: 00000246 ORIG_RAX: 000000000000003d RAX: fffffffffffffe00 RBX: 0000555576756500 RCX: 00007f02bfd5d68e RDX: 0000000040000000 RSI: 00007fff811623fc RDI: ffffffffffffffff RBP: 00007fff811623fc R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000024 R13: 0000555576769a00 R14: 000000000001914d R15: 00007fff81162450