watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.4.40:5442] Modules linked in: irq event stamp: 11250291 hardirqs last enabled at (11250290): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (11250291): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1037 softirqs last enabled at (10596): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (10596): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (10596): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (10599): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (10599): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (10599): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 UID: 0 PID: 5442 Comm: syz.4.40 Not tainted 6.11.0-syzkaller-10574-g93eeaab4563c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 4e 60 30 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 03 02 95 f5 65 8b 05 24 d5 35 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90000007180 EFLAGS: 00000206 RAX: ba1871d0ebbd3100 RBX: 1ffff92000000e34 RCX: ffffffff8170892a RDX: dffffc0000000000 RSI: ffffffff8c0aca40 RDI: 0000000000000001 RBP: ffffc90000007210 R08: ffffffff942688bf R09: 1ffffffff284d117 R10: dffffc0000000000 R11: fffffbfff284d118 R12: dffffc0000000000 R13: 1ffff92000000e30 R14: ffffc900000071a0 R15: 0000000000000246 FS: 00007f5ea593b6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002540 CR3: 0000000022760000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: debug_object_active_state+0x239/0x360 lib/debugobjects.c:945 debug_rcu_head_queue kernel/rcu/rcu.h:225 [inline] __call_rcu_common kernel/rcu/tree.c:3071 [inline] call_rcu+0xb5/0xa70 kernel/rcu/tree.c:3190 refdst_drop include/net/dst.h:263 [inline] skb_dst_drop include/net/dst.h:275 [inline] __dev_queue_xmit+0x8b8/0x3e80 net/core/dev.c:4379 dev_queue_xmit include/linux/netdevice.h:3094 [inline] neigh_hh_output include/net/neighbour.h:526 [inline] neigh_output include/net/neighbour.h:540 [inline] ip6_finish_output2+0xfc9/0x1730 net/ipv6/ip6_output.c:141 ip6_finish_output+0x41e/0x810 net/ipv6/ip6_output.c:226 NF_HOOK include/linux/netfilter.h:314 [inline] ndisc_send_skb+0xab2/0x1380 net/ipv6/ndisc.c:511 addrconf_rs_timer+0x371/0x670 net/ipv6/addrconf.c:4042 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1794 expire_timers kernel/time/timer.c:1845 [inline] __run_timers kernel/time/timer.c:2419 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1037 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:set_nr_if_polling kernel/sched/core.c:954 [inline] RIP: 0010:call_function_single_prep_ipi+0xcd/0x240 kernel/sched/core.c:3798 Code: e8 03 42 80 3c 20 00 74 08 48 89 df e8 dc 9d 9a 00 44 89 74 24 14 4c 8d 7c 24 40 48 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 20 00 <74> 08 48 89 df e8 b9 9d 9a 00 4c 8b 33 4c 89 ff 49 c1 ef 03 43 80 RSP: 0018:ffffc900040274c0 EFLAGS: 00000246 RAX: 1ffff11003a5d000 RBX: ffff88801d2e8000 RCX: 0000000000040000 RDX: ffff88801cf59e00 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90004027570 R08: ffffffff8188b97c R09: 1ffff110170c7f92 R10: dffffc0000000000 R11: ffffed10170c7f93 R12: dffffc0000000000 R13: 1ffff92000804e9c R14: 0000000000000001 R15: ffffc90004027500 send_call_function_single_ipi kernel/smp.c:115 [inline] smp_call_function_many_cond+0x1381/0x2ca0 kernel/smp.c:866 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1051 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:2085 [inline] text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2295 text_poke_flush arch/x86/kernel/alternative.c:2486 [inline] text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2493 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x136/0x260 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 tracepoint_add_func+0x953/0x9e0 kernel/tracepoint.c:361 tracepoint_probe_register_prio kernel/tracepoint.c:511 [inline] tracepoint_probe_register+0x105/0x160 kernel/tracepoint.c:531 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] perf_trace_event_init+0x478/0x930 kernel/trace/trace_event_perf.c:202 perf_trace_init+0x243/0x2e0 kernel/trace/trace_event_perf.c:226 perf_tp_event_init+0x8d/0x110 kernel/events/core.c:10358 perf_try_init_event+0x146/0x810 kernel/events/core.c:11892 perf_init_event kernel/events/core.c:11978 [inline] perf_event_alloc+0x135f/0x2310 kernel/events/core.c:12260 __do_sys_perf_event_open kernel/events/core.c:12767 [inline] __se_sys_perf_event_open+0xb1f/0x3870 kernel/events/core.c:12658 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5ea4b7dff9 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:00007f5ea593b038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f5ea4d35f80 RCX: 00007f5ea4b7dff9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007f5ea4bf0296 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5ea4d35f80 R15: 00007fff9aa02768 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5451 Comm: syz-executor Not tainted 6.11.0-syzkaller-10574-g93eeaab4563c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:lock_acquire+0x2a9/0x550 kernel/locking/lockdep.c:5826 Code: 66 43 c7 44 25 15 00 00 43 c6 44 25 17 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 00 01 00 00 0f 85 95 02 00 00 48 8d 65 d8 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 65 8b 05 82 72 92 7e 85 RSP: 0018:ffffc9000477f450 EFLAGS: 00000246 RAX: 9e03a7279665b800 RBX: 00000000000001e0 RCX: 9e03a7279665b800 RDX: dffffc0000000000 RSI: ffffffff8c0adbc0 RDI: ffffffff8c610420 RBP: ffffc9000477f470 R08: ffffffff942687c7 R09: 1ffffffff284d0f8 R10: dffffc0000000000 R11: fffffbfff284d0f9 R12: 1ffff920008efe6c R13: dffffc0000000000 R14: ffffc9000477f380 R15: 0000000000000246 FS: 0000555586197500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcf9ce5eff8 CR3: 0000000031204000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock_sched include/linux/rcupdate.h:941 [inline] pfn_valid+0x113/0x450 include/linux/mmzone.h:2043 page_table_check_set+0x22/0x540 mm/page_table_check.c:110 __page_table_check_ptes_set+0x30f/0x410 mm/page_table_check.c:225 page_table_check_ptes_set include/linux/page_table_check.h:74 [inline] set_ptes include/linux/pgtable.h:267 [inline] insert_page_into_pte_locked+0x62e/0x7f0 mm/memory.c:2061 insert_page mm/memory.c:2079 [inline] vm_insert_page+0x4c1/0x710 mm/memory.c:2229 kcov_mmap+0xd7/0x140 kernel/kcov.c:506 call_mmap include/linux/fs.h:2172 [inline] mmap_region+0x1add/0x2990 mm/mmap.c:1440 do_mmap+0x8f0/0x1000 mm/mmap.c:496 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588 ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:542 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1781f7e033 Code: f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 89 ca 41 f7 c1 ff 0f 00 00 75 14 b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 25 c3 0f 1f 40 00 48 c7 c0 a8 ff ff ff 64 c7 RSP: 002b:00007ffcbb5eba78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f1782136018 RCX: 00007f1781f7e033 RDX: 0000000000000003 RSI: 0000000000200000 RDI: 00007f1781601000 RBP: 00007f1782136018 R08: 00000000000000d8 R09: 0000000000000000 R10: 0000000000000011 R11: 0000000000000246 R12: 000000000000000c R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000