watchdog: BUG: soft lockup - CPU#0 stuck for 144s! [syz.0.54:6082] Modules linked in: irq event stamp: 12117597 hardirqs last enabled at (12117596): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (12117597): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (11733892): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (11733892): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (11733892): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (11733895): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (11733895): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (11733895): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 UID: 0 PID: 6082 Comm: syz.0.54 Not tainted 6.12.0-rc4-syzkaller-ga2b4a9cddae8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:__find_rr_leaf+0x37c/0x8e0 net/ipv6/route.c:797 Code: ff df 4c 8b 74 24 48 4c 8b 6c 24 40 49 83 c4 08 4c 89 e0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 e7 e8 48 11 92 f7 4d 8b 24 24 0f 5b 5a 01 89 c3 31 ff 89 c6 e8 c4 08 28 f7 85 db 74 1b e8 6b RSP: 0018:ffffc90000006fe0 EFLAGS: 00000246 RAX: 1ffff1100ff40301 RBX: ffff88807fa018b8 RCX: ffff888026c5bc00 RDX: 0000000000000100 RSI: 00000000fffffffd RDI: 00000000fffffffd RBP: ffffc90000007158 R08: ffffffff8a6cdbed R09: ffffc90000007290 R10: ffffc90000007280 R11: fffff52000000e1e R12: ffff888078de7c00 R13: 0000000000000000 R14: ffffc90000007260 R15: dffffc0000000000 FS: 00007fa09acdd6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2b81ba CR3: 0000000028dfe000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: find_rr_leaf net/ipv6/route.c:853 [inline] rt6_select net/ipv6/route.c:897 [inline] fib6_table_lookup+0x413/0xbb0 net/ipv6/route.c:2195 ip6_pol_route+0x273/0x15d0 net/ipv6/route.c:2231 pol_lookup_func include/net/ip6_fib.h:616 [inline] fib6_rule_lookup+0x58c/0x790 net/ipv6/fib6_rules.c:117 ip6_route_input_lookup net/ipv6/route.c:2300 [inline] ip6_route_input+0x859/0xd90 net/ipv6/route.c:2596 ip6_rcv_finish+0x144/0x180 net/ipv6/ip6_input.c:77 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5666 [inline] __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5779 process_backlog+0x662/0x15b0 net/core/dev.c:6111 __napi_poll+0xcb/0x490 net/core/dev.c:6775 napi_poll net/core/dev.c:6844 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6966 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:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:smp_call_function_many_cond+0x18a4/0x2ca0 kernel/smp.c:879 Code: 72 f0 0b 00 4c 8b 7c 24 20 4d 85 f6 75 11 e8 63 f0 0b 00 83 7c 24 18 00 75 16 e9 c6 0b 00 00 e8 52 f0 0b 00 fb 83 7c 24 18 00 <0f> 84 b5 0b 00 00 44 3b 7c 24 78 0f 83 aa 0b 00 00 4d 8d 75 08 4c RSP: 0018:ffffc90004a8f580 EFLAGS: 00000202 RAX: ffffffff8188e76e RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc900045c9000 RSI: 0000000000003314 RDI: 0000000000003315 RBP: ffffc90004a8f780 R08: ffffffff8188e740 R09: 1ffffffff285a100 R10: dffffc0000000000 R11: fffffbfff285a101 R12: dffffc0000000000 R13: ffff8880b863fcc0 R14: 0000000000000200 R15: 0000000000000001 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+0x726/0xb30 arch/x86/kernel/alternative.c:2357 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:10357 perf_try_init_event+0x146/0x810 kernel/events/core.c:11891 perf_init_event kernel/events/core.c:11977 [inline] perf_event_alloc+0x135f/0x2310 kernel/events/core.c:12259 __do_sys_perf_event_open kernel/events/core.c:12766 [inline] __se_sys_perf_event_open+0xb1f/0x3870 kernel/events/core.c:12657 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: 0033:0x7fa099f7e719 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:00007fa09acdd038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fa09a135f80 RCX: 00007fa099f7e719 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040 RBP: 00007fa099ff139e R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa09a135f80 R15: 00007fff515bf568 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6079 Comm: syz.4.55 Not tainted 6.12.0-rc4-syzkaller-ga2b4a9cddae8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 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:149 [inline] RIP: 0010:wrmsr arch/x86/include/asm/msr.h:256 [inline] RIP: 0010:native_apic_msr_write+0x39/0x50 arch/x86/include/asm/apic.h:212 Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 cc cc cc cc f3 0f 1e fa 89 f6 31 d2 e9 83 ab b6 03 0f 1f RSP: 0018:ffffc90000a18a60 EFLAGS: 00000046 RAX: 00000000000000f5 RBX: 0000000000000020 RCX: 0000000000000838 RDX: 0000000000000000 RSI: 00000000000000f5 RDI: 0000000000000838 RBP: 00000000000000f5 R08: ffffffff81856aa9 R09: 1ffffffff203a455 R10: dffffc0000000000 R11: ffffffff813eb4e0 R12: 0000000000000f53 R13: dffffc0000000000 R14: 0000000010007068 R15: ffff8880b8728340 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555789805c8 CR3: 0000000032a6c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: apic_write arch/x86/include/asm/apic.h:405 [inline] lapic_next_event+0x11/0x20 arch/x86/kernel/apic/apic.c:415 clockevents_program_event+0x1c1/0x350 kernel/time/clockevents.c:334 hrtimer_interrupt+0x54a/0x990 kernel/time/hrtimer.c:1830 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202 Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 ca 86 9f f5 48 89 df e8 e2 cc a0 f5 e8 ad b8 cb f5 fb bf 01 00 00 00 f2 47 92 f5 65 8b 05 03 f2 32 74 85 c0 74 06 5b c3 cc cc cc cc RSP: 0018:ffffc90000a18cb0 EFLAGS: 00000282 RAX: 654e9c6a5ba09900 RBX: ffff8880b872a700 RCX: ffffffff8170be0a RDX: dffffc0000000000 RSI: ffffffff8c0acdc0 RDI: 0000000000000001 RBP: ffffc90000a18e10 R08: ffffffff942d0807 R09: 1ffffffff285a100 R10: dffffc0000000000 R11: fffffbfff285a101 R12: ffffffff84a22f80 R13: ffffc90000a18d60 R14: ffff888026ebed30 R15: ffff888026ebed10 expire_timers kernel/time/timer.c:1844 [inline] __run_timers kernel/time/timer.c:2419 [inline] __run_timer_base+0x65a/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:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:check_kcov_mode kernel/kcov.c:194 [inline] RIP: 0010:write_comp_data kernel/kcov.c:246 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x35/0x90 kernel/kcov.c:321 Code: 0c 25 00 d8 03 00 65 8b 05 50 fb 6e 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 57 83 b9 1c 16 00 00 00 74 4e 8b 81 f8 15 00 00 <83> f8 03 75 43 48 8b 91 00 16 00 00 44 8b 89 fc 15 00 00 49 c1 e1 RSP: 0018:ffffc90004bf72b8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888026c5da00 RDX: ffff888026c5da00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 1ffffd40003397d1 R08: ffffffff820bbe63 R09: 1ffffffff285a100 R10: dffffc0000000000 R11: fffffbfff285a101 R12: ffffea00019cbe88 R13: ffff88801e23ee20 R14: 0000000000000001 R15: ffffea00019cbe80 _compound_head include/linux/page-flags.h:244 [inline] PageAnon include/linux/page-flags.h:694 [inline] page_table_check_clear+0x113/0x550 mm/page_table_check.c:80 get_and_clear_full_ptes include/linux/pgtable.h:684 [inline] zap_present_folio_ptes mm/memory.c:1496 [inline] zap_present_ptes mm/memory.c:1579 [inline] zap_pte_range mm/memory.c:1621 [inline] zap_pmd_range mm/memory.c:1739 [inline] zap_pud_range mm/memory.c:1768 [inline] zap_p4d_range mm/memory.c:1789 [inline] unmap_page_range+0x2a13/0x40e0 mm/memory.c:1810 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1900 exit_mmap+0x275/0xc40 mm/mmap.c:1874 __mmput+0x115/0x390 kernel/fork.c:1347 exit_mm+0x220/0x310 kernel/exit.c:571 do_exit+0x9b2/0x28e0 kernel/exit.c:926 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 get_signal+0x16a3/0x1740 kernel/signal.c:2917 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6a9397e719 Code: Unable to access opcode bytes at 0x7f6a9397e6ef. RSP: 002b:00007f6a9470c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffb3 RBX: 00007f6a93b35f80 RCX: 00007f6a9397e719 RDX: 0000000000000010 RSI: 0000000020000bc0 RDI: 000000000000000f RBP: 00007f6a939f139e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6a93b35f80 R15: 00007fff0356e068