watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz.1.21:5979] Modules linked in: irq event stamp: 10773033 hardirqs last enabled at (10773032): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (10773033): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (10646496): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (10646496): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (10646496): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (10646499): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (10646499): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (10646499): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 UID: 0 PID: 5979 Comm: syz.1.21 Not tainted 6.12.0-rc6-syzkaller-gfb86c42a2a5d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:__find_rr_leaf+0x155/0x8e0 net/ipv6/route.c:801 Code: 40 4c 89 74 24 48 4d 85 f6 74 3d 49 8d 9c 24 90 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 9b 04 00 00 44 8b 2b <44> 89 ef 8b 5c 24 74 89 de e8 0d 03 28 f7 41 39 dd 0f 85 e4 05 00 RSP: 0018:ffffc90000006fe0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88802dc7e490 RCX: ffff88802e8a1e00 RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000007158 R08: ffffffff8a6cdb50 R09: ffffc90000007290 R10: ffffc90000007280 R11: fffff52000000e1e R12: ffff88802dc7e400 R13: 0000000000000100 R14: ffffc90000007260 R15: dffffc0000000000 FS: 00007f050e6b66c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30b15ff8 CR3: 000000002da82000 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:5670 [inline] __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5783 process_backlog+0x662/0x15b0 net/core/dev.c:6115 __napi_poll+0xcb/0x490 net/core/dev.c:6779 napi_poll net/core/dev.c:6848 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6970 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:__sanitizer_cov_trace_pc+0x43/0x70 kernel/kcov.c:222 Code: e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 1c 16 00 00 00 74 2c 8b 91 f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 <48> 8b 32 48 8d 7e 01 8b 89 fc 15 00 00 48 39 cf 73 08 48 89 3a 48 RSP: 0018:ffffc90004297578 EFLAGS: 00000246 RAX: ffffffff8188eb2f RBX: 1ffff110170e8919 RCX: ffff88802e8a1e00 RDX: ffffc9000acee000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004297780 R08: ffffffff8188eb1a R09: 1ffffffff2859b00 R10: dffffc0000000000 R11: fffffbfff2859b01 R12: dffffc0000000000 R13: ffff8880b87448c8 R14: ffff8880b863fc80 R15: 0000000000000001 csd_lock_wait kernel/smp.c:340 [inline] smp_call_function_many_cond+0x19ef/0x2ca0 kernel/smp.c:884 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: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: 0033:0x7f050d97e719 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:00007f050e6b6038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f050db35f80 RCX: 00007f050d97e719 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000200 RBP: 00007f050d9f139e R08: 0000000000000002 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f050db35f80 R15: 00007ffcfcce2a88 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5990 Comm: syz.4.24 Not tainted 6.12.0-rc6-syzkaller-gfb86c42a2a5d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:__preempt_count_add kernel/rcu/tree.c:733 [inline] RIP: 0010:rcu_is_watching+0x8/0xb0 kernel/rcu/tree.c:736 Code: 7b 03 eb cd 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 <53> 65 ff 05 08 10 89 7e e8 5b 8d 4c 0a 89 c3 83 f8 08 73 7a 49 bf RSP: 0018:ffffc90000a18728 EFLAGS: 00000057 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81704864 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff901d08a8 RBP: ffffc90000a18888 R08: ffffffff901d08af R09: 1ffffffff203a115 R10: dffffc0000000000 R11: fffffbfff203a116 R12: 1ffff920001430f0 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055556008f5c8 CR3: 0000000068a26000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0xe3/0x550 kernel/locking/lockdep.c:5796 rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] __perf_event_output kernel/events/core.c:8033 [inline] perf_event_output_forward+0xf8/0x480 kernel/events/core.c:8056 __perf_event_overflow+0x763/0xc80 kernel/events/core.c:9879 perf_swevent_hrtimer+0x3b3/0x560 kernel/events/core.c:11226 __run_hrtimer kernel/time/hrtimer.c:1691 [inline] __hrtimer_run_queues+0x551/0xd50 kernel/time/hrtimer.c:1755 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817 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+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_acquire+0x468/0x550 Code: fd ff ff 48 89 df e8 57 54 8e 00 e9 fe fc ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 33 ff ff ff e8 2d 55 8e 00 e9 29 ff ff ff 0f 1e fa 45 89 f7 65 8b 05 c6 8b 93 7e 83 f8 08 0f 83 bf 00 00 RSP: 0018:ffffc90004517120 EFLAGS: 00000a02 RAX: f2f2f200f1f1f1f1 RBX: ffffea00017bdb00 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e937da0 RBP: ffffc90004517278 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff203a116 R12: 1ffff920008a2e2c R13: dffffc0000000000 R14: 0000000000000000 R15: ffffea00017bdb00 rcu_lock_acquire include/linux/rcupdate.h:337 [inline] rcu_read_lock include/linux/rcupdate.h:849 [inline] page_ext_get+0x3d/0x2a0 mm/page_ext.c:525 page_table_check_clear+0x4b/0x550 mm/page_table_check.c:74 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:1913 __mmput+0x115/0x390 kernel/fork.c:1348 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: 0033:0x7fb96857e719 Code: Unable to access opcode bytes at 0x7fb96857e6ef. RSP: 002b:00007fb96940f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: fffffffffffffff5 RBX: 00007fb968735f80 RCX: 00007fb96857e719 RDX: 0000000000000048 RSI: 0000000020000080 RDI: 0000000000000005 RBP: 00007fb9685f139e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb968735f80 R15: 00007ffd43673158