watchdog: BUG: soft lockup - CPU#0 stuck for 114s! [syz.1.46:6068] Modules linked in: irq event stamp: 11827783 hardirqs last enabled at (11827782): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (11827783): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (8675776): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last enabled at (8675776): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last enabled at (8675776): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 softirqs last disabled at (8675779): [] __do_softirq kernel/softirq.c:613 [inline] softirqs last disabled at (8675779): [] invoke_softirq kernel/softirq.c:453 [inline] softirqs last disabled at (8675779): [] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 CPU: 0 UID: 0 PID: 6068 Comm: syz.1.46 Not tainted 6.14.0-syzkaller-ga27a97f71394 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:rt6_score_route+0x1/0x380 net/ipv6/route.c:717 Code: c1 0f 8c 23 ff ff ff 48 89 df e8 ba 04 66 f7 e9 16 ff ff ff 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 <41> 57 41 56 41 55 41 54 53 41 89 cd 89 d3 41 89 f7 49 89 fe 49 bc RSP: 0018:ffffc90000006f10 EFLAGS: 00000246 RAX: ffffffff8ac9ab16 RBX: ffff88807e9a6cb8 RCX: 0000000000000003 RDX: 0000000000000010 RSI: 0000000000000001 RDI: ffff88807e9a6cb8 RBP: 0000000000000003 R08: ffffffff8ac9aabb R09: ffffc90000007250 R10: ffffc90000007080 R11: fffff52000000e16 R12: ffff88805be2d654 R13: ffff88807e9a6ccf R14: 1ffff1100fd34d99 R15: 1ffff1100fd34d97 FS: 0000000000000000(0000) GS:ffff888124f97000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3061fffc CR3: 0000000032bfa000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: find_match+0x1cb/0xc10 net/ipv6/route.c:752 __find_rr_leaf+0x277/0x8f0 net/ipv6/route.c:835 find_rr_leaf net/ipv6/route.c:856 [inline] rt6_select net/ipv6/route.c:900 [inline] fib6_table_lookup+0x410/0xbf0 net/ipv6/route.c:2195 ip6_pol_route+0x26d/0x15f0 net/ipv6/route.c:2231 pol_lookup_func include/net/ip6_fib.h:616 [inline] fib6_rule_lookup+0x590/0x7a0 net/ipv6/fib6_rules.c:120 ip6_route_input_lookup net/ipv6/route.c:2300 [inline] ip6_route_input+0x85b/0xda0 net/ipv6/route.c:2596 ip6_rcv_finish+0x140/0x3d0 net/ipv6/ip6_input.c:77 NF_HOOK+0x3a0/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5891 [inline] __netif_receive_skb+0x1ef/0x670 net/core/dev.c:6004 process_backlog+0x664/0x15c0 net/core/dev.c:6356 __napi_poll+0xcb/0x480 net/core/dev.c:7328 napi_poll net/core/dev.c:7392 [inline] net_rx_action+0x89d/0x1240 net/core/dev.c:7514 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 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:preempt_count_add+0x6/0x190 kernel/sched/core.c:5847 Code: 48 8b 3c 24 e8 8b f5 9c 00 eb 8c e9 ee fe ff ff 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 89 fb 48 c7 c0 80 b6 73 9a 48 c1 e8 03 49 bf 00 00 00 00 RSP: 0018:ffffc900056463b0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff888026f53c00 RDX: ffff888026f54040 RSI: ffffc90005646450 RDI: 0000000000000001 RBP: ffffc900056464d0 R08: ffffffff81cef994 R09: 0000000000000000 R10: ffffc90005646560 R11: ffffffffa0000948 R12: 1ffff11004dea808 R13: ffff888026f54030 R14: 1ffff92000ac8c8a R15: 1ffff92000ac8c80 class_preempt_constructor include/linux/preempt.h:481 [inline] migrate_enable+0x16b/0x520 kernel/sched/core.c:2417 bpf_prog_run_array include/linux/bpf.h:2219 [inline] trace_call_bpf+0x4fa/0x8a0 kernel/trace/bpf_trace.c:146 perf_trace_run_bpf_submit+0x82/0x180 kernel/events/core.c:10807 do_perf_trace_lock_acquire include/trace/events/lock.h:24 [inline] perf_trace_lock_acquire+0x402/0x520 include/trace/events/lock.h:24 __do_trace_lock_acquire include/trace/events/lock.h:24 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x2c6/0x2f0 kernel/locking/lockdep.c:5829 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] class_rcu_constructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0xd5/0x23b0 arch/x86/kernel/unwind_orc.c:479 arch_stack_walk+0x11e/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122 save_stack+0xfc/0x1f0 mm/page_owner.c:156 __set_page_owner+0x93/0x530 mm/page_owner.c:329 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f4/0x240 mm/page_alloc.c:1717 prep_new_page mm/page_alloc.c:1725 [inline] get_page_from_freelist+0x352b/0x36c0 mm/page_alloc.c:3652 __alloc_frozen_pages_noprof+0x211/0x5b0 mm/page_alloc.c:4934 alloc_pages_mpol+0x339/0x690 mm/mempolicy.c:2301 alloc_frozen_pages_noprof mm/mempolicy.c:2372 [inline] alloc_pages_noprof+0x121/0x190 mm/mempolicy.c:2392 get_free_pages_noprof+0xc/0x30 mm/page_alloc.c:4993 tlb_next_batch mm/mmu_gather.c:35 [inline] __tlb_remove_folio_pages_size+0x2a8/0x590 mm/mmu_gather.c:196 zap_present_folio_ptes mm/memory.c:1530 [inline] zap_present_ptes mm/memory.c:1586 [inline] do_zap_pte_range mm/memory.c:1687 [inline] zap_pte_range mm/memory.c:1731 [inline] zap_pmd_range mm/memory.c:1823 [inline] zap_pud_range mm/memory.c:1852 [inline] zap_p4d_range mm/memory.c:1873 [inline] unmap_page_range+0x22cd/0x44d0 mm/memory.c:1894 unmap_vmas+0x3ce/0x5f0 mm/memory.c:1984 exit_mmap+0x2bc/0xde0 mm/mmap.c:1284 __mmput+0x115/0x420 kernel/fork.c:1379 exit_mm+0x221/0x310 kernel/exit.c:589 do_exit+0x994/0x27f0 kernel/exit.c:940 do_group_exit+0x207/0x2c0 kernel/exit.c:1102 get_signal+0x1696/0x1730 kernel/signal.c:3034 arch_do_signal_or_restart+0x98/0x840 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:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff9eb18d169 Code: Unable to access opcode bytes at 0x7ff9eb18d13f. RSP: 002b:00007ff9ec03f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: fffffffffffffff7 RBX: 00007ff9eb3a5fa0 RCX: 00007ff9eb18d169 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff RBP: 00007ff9eb20e990 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff9eb3a5fa0 R15: 00007ffe4816cf28 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6060 Comm: syz.2.42 Not tainted 6.14.0-syzkaller-ga27a97f71394 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:mark_lock+0x9f/0x1b0 kernel/locking/lockdep.c:4775 Code: 00 75 19 90 48 c7 c7 08 bd 4f 8e 48 c7 c6 99 d1 4f 8e e8 04 54 e3 ff 90 0f 0b 90 90 90 31 c0 41 bd 01 00 00 00 85 58 60 74 12 <44> 89 e8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 7a aa ff RSP: 0018:ffffc90000a07d88 EFLAGS: 00000002 RAX: ffffffff94117f08 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff88802cbcc790 RDI: ffff88802cbcbc00 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88802cbcc7b0 R13: 0000000000000001 R14: ffff88802cbcbc00 R15: ffff88802cbcc790 FS: 00007f4bed1da6c0(0000) GS:ffff888125097000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4dd02d8740 CR3: 0000000032be8000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mark_usage kernel/locking/lockdep.c:4640 [inline] __lock_acquire+0x641/0xd80 kernel/locking/lockdep.c:5189 lock_acquire+0x116/0x2f0 kernel/locking/lockdep.c:5866 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd8/0x130 kernel/locking/spinlock.c:162 hrtimer_interrupt+0x5d2/0xa40 kernel/time/hrtimer.c:1948 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:check_preemption_disabled+0x8/0x120 lib/smp_processor_id.c:13 Code: c0 b0 a1 8c eb 1c 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 57 41 56 41 55 41 54 <53> 48 83 ec 10 49 c7 c4 20 90 68 93 65 49 8b 04 24 48 89 44 24 08 RSP: 0018:ffffc90000a08198 EFLAGS: 00000246 RAX: 0000607edaccd890 RBX: ffffffff8ec0d100 RCX: 000000008c4bbf05 RDX: 0000000000000000 RSI: ffffffff8ca1b0c0 RDI: ffffffff8ca1b080 RBP: ffffc90000a082c8 R08: 0000000000000002 R09: 0000000000000000 R10: ffffc90000a08490 R11: ffffffff81aee9b0 R12: dffffc0000000000 R13: ffffffff8ec0d0a0 R14: ffffffff8ed3dfe0 R15: 000000000000000d do_perf_trace_lock_acquire include/trace/events/lock.h:24 [inline] perf_trace_lock_acquire+0x144/0x520 include/trace/events/lock.h:24 __do_trace_lock_acquire include/trace/events/lock.h:24 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x2c6/0x2f0 kernel/locking/lockdep.c:5829 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] class_rcu_constructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0xd5/0x23b0 arch/x86/kernel/unwind_orc.c:479 arch_stack_walk+0x11e/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2389 [inline] slab_free mm/slub.c:4646 [inline] kmem_cache_free+0x197/0x410 mm/slub.c:4748 hsr_forward_skb+0x1e71/0x2d20 net/hsr/hsr_forward.c:-1 send_hsr_supervision_frame+0x63f/0xd30 net/hsr/hsr_device.c:358 hsr_announce+0x1fa/0x3a0 net/hsr/hsr_device.c:415 call_timer_fn+0x189/0x650 kernel/time/timer.c:1789 expire_timers kernel/time/timer.c:1840 [inline] __run_timers kernel/time/timer.c:2414 [inline] __run_timer_base+0x66e/0x8e0 kernel/time/timer.c:2426 run_timer_base kernel/time/timer.c:2435 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2445 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 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:__schedule+0x4/0x5240 kernel/sched/core.c:6646 Code: 92 85 fc f5 e9 02 ff ff ff cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec 00 02 RSP: 0018:ffffc900055ae8d8 EFLAGS: 00000246 RAX: 1ffff11005979a1c RBX: 1ffff92000ab5d1c RCX: dffffc0000000000 RDX: ffffc90004da1000 RSI: 00000000000516c7 RDI: 0000000000000001 RBP: ffffc900055ae980 R08: ffffffff81f606ed R09: 0000000000000000 R10: ffffc900055ae7e0 R11: ffffffffa0000948 R12: dffffc0000000000 R13: 1ffff92000ab5d20 R14: ffffc900055ae900 R15: ffffffff93689020 preempt_schedule_notrace+0x103/0x140 kernel/sched/core.c:7040 preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13 class_preempt_notrace_destructor include/linux/preempt.h:482 [inline] __do_trace_lock_acquire include/trace/events/lock.h:24 [inline] trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x2df/0x2f0 kernel/locking/lockdep.c:5829 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] class_rcu_constructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0xd5/0x23b0 arch/x86/kernel/unwind_orc.c:479 arch_stack_walk+0x11e/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122 save_stack+0xfc/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x76/0x1e0 mm/page_owner.c:308 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1262 [inline] __free_frozen_pages+0xde8/0x10a0 mm/page_alloc.c:2680 discard_slab mm/slub.c:2720 [inline] __put_partials+0x160/0x1c0 mm/slub.c:3189 put_cpu_partial+0x17e/0x250 mm/slub.c:3264 __slab_free+0x294/0x390 mm/slub.c:4516 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_kmalloc_large+0x1a/0xa0 mm/kasan/common.c:426 kasan_kmalloc_large include/linux/kasan.h:270 [inline] ___kmalloc_large_node+0x168/0x210 mm/slub.c:4283 __kmalloc_large_node_noprof+0x1a/0x80 mm/slub.c:4303 __do_kmalloc_node mm/slub.c:4319 [inline] __kvmalloc_node_noprof+0x7c/0x5a0 mm/slub.c:5016 bpf_check+0x179/0x1d1c0 kernel/bpf/verifier.c:23919 bpf_prog_load+0x17ee/0x2250 kernel/bpf/syscall.c:2971 __sys_bpf+0x5dd/0x8b0 kernel/bpf/syscall.c:5834 __do_sys_bpf kernel/bpf/syscall.c:5941 [inline] __se_sys_bpf kernel/bpf/syscall.c:5939 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5939 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4bec38d169 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:00007f4bed1da038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f4bec5a5fa0 RCX: 00007f4bec38d169 RDX: 0000000000000080 RSI: 0000200000000200 RDI: 0000000000000005 RBP: 00007f4bec40e990 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f4bec5a5fa0 R15: 00007ffeec5c0a18