watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.3.29:6028] Modules linked in: irq event stamp: 12267949 hardirqs last enabled at (12267948): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:310 hardirqs last disabled at (12267949): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1050 softirqs last enabled at (103760): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (103760): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (103760): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 softirqs last disabled at (104645): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (104645): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (104645): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 6028 Comm: syz.3.29 Not tainted 6.15.0-syzkaller-g99fe8af069a9 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:queued_write_lock_slowpath+0x120/0x260 kernel/locking/qrwlock.c:85 Code: bb f6 f0 81 0b 00 01 00 00 43 0f b6 04 27 84 c0 74 35 89 d9 80 e1 07 80 c1 03 38 c1 7c 29 48 89 df e8 84 79 bb f6 eb 1f f3 90 <43> 0f b6 04 27 84 c0 74 14 89 d9 80 e1 07 80 c1 03 38 c1 7c 08 48 RSP: 0018:ffffc900000074e0 EFLAGS: 00000206 RAX: 00000000000001ff RBX: ffffffff8f6214a0 RCX: ffffffff8b68b578 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8f6214a0 RBP: ffffc90000007590 R08: ffffffff8f6214a3 R09: 1ffffffff1ec4294 R10: dffffc0000000000 R11: fffffbfff1ec4295 R12: dffffc0000000000 R13: 1ffff92000000ea0 R14: ffffc90000007530 R15: 1ffffffff1ec4294 FS: 00007fdeb48af6c0(0000) GS:ffff888125c54000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd610bb7bac CR3: 000000007d2be000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: queued_write_lock include/asm-generic/qrwlock.h:101 [inline] do_raw_write_lock+0x1f2/0x260 kernel/locking/spinlock_debug.c:211 ___neigh_create+0xe81/0x2260 net/core/neighbour.c:641 ip6_finish_output2+0xb4d/0x16a0 net/ipv6/ip6_output.c:132 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] ip6_finish_output+0x234/0x7d0 net/ipv6/ip6_output.c:226 NF_HOOK include/linux/netfilter.h:317 [inline] ndisc_send_skb+0xb47/0x1400 net/ipv6/ndisc.c:513 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4041 call_timer_fn+0x17b/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: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:strlen+0x1f/0x70 lib/string.c:420 Code: 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 41 54 53 48 c7 c0 ff ff ff ff 49 be 00 00 00 00 00 fc ff df 48 89 fb <49> 89 c7 48 89 d8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 11 48 ff c3 RSP: 0018:ffffc90005646318 EFLAGS: 00000206 RAX: 0000000000000009 RBX: ffffffff8b8bd56a RCX: 000000008b8bd501 RDX: ffffffff81729de5 RSI: ffffffff8e13f060 RDI: ffffffff8b8bd560 RBP: ffffc90005646440 R08: ffffc90005647390 R09: 0000000000000000 R10: ffffc900056465d8 R11: fffff52000ac8cbd R12: 1ffff92000ac8c70 R13: ffffffff81729de5 R14: dffffc0000000000 R15: 0000000000000008 __fortify_strlen include/linux/fortify-string.h:268 [inline] trace_event_get_offsets_lock include/trace/events/lock.h:50 [inline] do_perf_trace_lock include/trace/events/lock.h:50 [inline] perf_trace_lock+0xc2/0x3b0 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:5882 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 save_stack+0xf5/0x1f0 mm/page_owner.c:156 __set_page_owner+0x8d/0x4a0 mm/page_owner.c:329 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1704 prep_new_page mm/page_alloc.c:1712 [inline] get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3669 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419 alloc_slab_page mm/slub.c:2451 [inline] allocate_slab+0x8a/0x3b0 mm/slub.c:2619 new_slab mm/slub.c:2673 [inline] ___slab_alloc+0xbfc/0x1480 mm/slub.c:3859 __slab_alloc mm/slub.c:3949 [inline] __slab_alloc_node mm/slub.c:4024 [inline] slab_alloc_node mm/slub.c:4185 [inline] __do_kmalloc_node mm/slub.c:4327 [inline] __kmalloc_node_track_caller_noprof+0x2f8/0x4e0 mm/slub.c:4347 __do_krealloc mm/slub.c:4905 [inline] krealloc_noprof+0x124/0x340 mm/slub.c:4958 push_jmp_history+0x1cc/0x6f0 kernel/bpf/verifier.c:3930 is_state_visited kernel/bpf/verifier.c:19321 [inline] do_check+0x6ab5/0xdba0 kernel/bpf/verifier.c:19850 do_check_common+0x18c9/0x2400 kernel/bpf/verifier.c:23079 do_check_main kernel/bpf/verifier.c:23162 [inline] bpf_check+0x110e2/0x1a240 kernel/bpf/verifier.c:24516 bpf_prog_load+0x1318/0x1930 kernel/bpf/syscall.c:2972 __sys_bpf+0x5f1/0x860 kernel/bpf/syscall.c:5978 __do_sys_bpf kernel/bpf/syscall.c:6085 [inline] __se_sys_bpf kernel/bpf/syscall.c:6083 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6083 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: 0033:0x7fdeb398e929 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:00007fdeb48af038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fdeb3bb5fa0 RCX: 00007fdeb398e929 RDX: 0000000000000048 RSI: 00002000000054c0 RDI: 0000000000000005 RBP: 00007fdeb3a10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fdeb3bb5fa0 R15: 00007ffec0decf58 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6046 Comm: syz.2.35 Not tainted 6.15.0-syzkaller-g99fe8af069a9 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__perf_event_overflow+0x930/0xe10 kernel/events/core.c:10338 Code: 00 00 00 00 43 c7 44 2e 08 00 00 00 00 65 48 8b 05 d5 22 ac 10 48 3b 84 24 c0 00 00 00 0f 85 34 02 00 00 89 d8 48 8d 65 d8 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 b9 00 00 00 00 00 RSP: 0018:ffffc90000a07d90 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 1ffff92000140fc0 RCX: ffff888025db5a00 RDX: 0000000000010100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000a07db0 R08: ffffc90000a07af7 R09: 0000000000000000 R10: ffffc90000a07ae0 R11: fffff52000140f5f R12: ffffc90000a082f8 R13: dffffc0000000000 R14: 1ffff92000140fa0 R15: ffff888026ca76c0 FS: 00007fd6117786c0(0000) GS:ffff888125d54000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000003000 CR3: 00000000289b2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: perf_swevent_hrtimer+0x3c5/0x550 kernel/events/core.c:11717 __run_hrtimer kernel/time/hrtimer.c:1761 [inline] __hrtimer_run_queues+0x4dd/0xc60 kernel/time/hrtimer.c:1825 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline] __sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1056 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:430 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x6ce/0xb60 kernel/locking/qspinlock.c:325 Code: ff ff 66 c7 84 24 90 00 00 00 00 01 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 20 0f b6 04 01 84 c0 75 46 80 3b 00 74 09 f3 90 <41> ff c6 75 d3 eb 4b 48 89 df be 02 00 00 00 e8 1e 84 bb f6 48 8d RSP: 0018:ffffc90000a083a0 EFLAGS: 00000206 RAX: 0000000000000000 RBX: ffffffff8f6214a4 RCX: 1ffffffff1ec4294 RDX: 0000000000000100 RSI: ffffffff8d97cf77 RDI: ffff8880b873c894 RBP: ffffc90000a084b8 R08: ffffffff8fa101f7 R09: 1ffffffff1f4203e R10: dffffc0000000000 R11: fffffbfff1f4203f R12: 1ffffffff1bf5318 R13: 0000000000000000 R14: 00000000fffffaac R15: 1ffffffff1ec4294 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:557 [inline] queued_spin_lock_slowpath+0x43/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] queued_write_lock_slowpath+0x22c/0x260 kernel/locking/qrwlock.c:73 queued_write_lock include/asm-generic/qrwlock.h:101 [inline] do_raw_write_lock+0x1f2/0x260 kernel/locking/spinlock_debug.c:211 ___neigh_create+0xe81/0x2260 net/core/neighbour.c:641 ip6_finish_output2+0xb4d/0x16a0 net/ipv6/ip6_output.c:132 __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline] ip6_finish_output+0x234/0x7d0 net/ipv6/ip6_output.c:226 NF_HOOK include/linux/netfilter.h:317 [inline] ndisc_send_skb+0xb47/0x1400 net/ipv6/ndisc.c:513 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4041 call_timer_fn+0x17b/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: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:nearest_obj mm/slab.h:331 [inline] RIP: 0010:kasan_record_aux_stack+0x62/0xd0 mm/kasan/generic.c:542 Code: c2 0f 85 81 00 00 00 4c 8b 71 08 48 89 ce 48 2b 35 8b 7d 95 0b 48 c1 e6 06 48 03 35 70 7d 95 0b 48 89 d8 48 29 f0 41 8b 7e 18 <48> 89 c2 48 c1 ea 20 74 07 48 99 48 f7 ff eb 04 31 d2 f7 f7 48 29 RSP: 0018:ffffc900056f72e8 EFLAGS: 00000206 RAX: 0000000000007190 RBX: ffff8880259d7190 RCX: ffffea0000967400 RDX: fffffffde9bd7100 RSI: ffff8880259d0000 RDI: 0000000000001e00 RBP: ffffc900056f7410 R08: 0000000000000000 R09: ffffffff817464c8 R10: dffffc0000000000 R11: fffffbfff1f4203f R12: dffffc0000000000 R13: 1ffff92000adee6c R14: ffff88801ba94500 R15: 0000000000000000 __call_rcu_common kernel/rcu/tree.c:3090 [inline] call_rcu+0x142/0x990 kernel/rcu/tree.c:3210 context_switch kernel/sched/core.c:5399 [inline] __schedule+0x16fd/0x4d00 kernel/sched/core.c:6785 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7108 irqentry_exit+0x6f/0x90 kernel/entry/common.c:307 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:64 [inline] RIP: 0010:kasan_byte_accessible+0x4/0x30 mm/kasan/generic.c:199 Code: d2 e8 a0 ef ff ff 34 01 e9 1c ff ff ff 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 <48> c1 ef 03 48 b8 00 00 00 00 00 fc ff df 0f b6 04 07 3c 08 0f 92 RSP: 0018:ffffc900056f77a8 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff82110bc5 RCX: 171b7cb9ed02ac00 RDX: 0000000000000000 RSI: ffffffff82110bc5 RDI: ffffffff8e13f060 RBP: ffffffff82110ba9 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffff9400000cf19 R12: 0000000000000002 R13: ffffffff8e13f060 R14: ffffffff8e13f060 R15: 0000000000000000 __kasan_check_byte+0x12/0x40 mm/kasan/common.c:556 kasan_check_byte include/linux/kasan.h:399 [inline] lock_acquire+0x8d/0x360 kernel/locking/lockdep.c:5845 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] ___pte_offset_map+0x45/0x2c0 mm/pgtable-generic.c:287 __pte_offset_map include/linux/mm.h:2995 [inline] __pte_offset_map_lock+0x46/0x210 mm/pgtable-generic.c:398 get_locked_pte include/linux/mm.h:2703 [inline] __text_poke+0x2e6/0xa10 arch/x86/kernel/alternative.c:2474 text_poke arch/x86/kernel/alternative.c:2559 [inline] smp_text_poke_batch_finish+0x8af/0x1100 arch/x86/kernel/alternative.c:2892 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_disable_cpuslocked+0xc5/0x1b0 kernel/jump_label.c:240 static_key_disable+0x1a/0x20 kernel/jump_label.c:248 tracepoint_remove_func kernel/tracepoint.c:370 [inline] tracepoint_probe_unregister+0x80e/0x9b0 kernel/tracepoint.c:504 trace_event_reg+0x153/0x270 kernel/trace/trace_events.c:-1 perf_trace_event_unreg+0xb9/0x1b0 kernel/trace/trace_event_perf.c:162 perf_trace_destroy+0xa4/0x150 kernel/trace/trace_event_perf.c:241 __free_event+0x313/0x7b0 kernel/events/core.c:5589 put_event kernel/events/core.c:5732 [inline] perf_event_release_kernel+0x45b/0x510 kernel/events/core.c:5842 perf_release+0x38/0x50 kernel/events/core.c:5852 __fput+0x449/0xa70 fs/file_table.c:465 fput_close_sync+0x119/0x200 fs/file_table.c:570 __do_sys_close fs/open.c:1589 [inline] __se_sys_close fs/open.c:1574 [inline] __x64_sys_close+0x7f/0x110 fs/open.c:1574 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: 0033:0x7fd61098e929 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:00007fd611778038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 00007fd610bb5fa0 RCX: 00007fd61098e929 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fd610a10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd610bb5fa0 R15: 00007ffffffb1838