watchdog: BUG: soft lockup - CPU#0 stuck for 119s! [syz.3.1106:9346] Modules linked in: irq event stamp: 15141655 hardirqs last enabled at (15141654): [] irqentry_exit+0x74/0x90 kernel/entry/common.c:214 hardirqs last disabled at (15141655): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1052 softirqs last enabled at (13374464): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (13374464): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (13374464): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 softirqs last disabled at (13374467): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (13374467): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (13374467): [] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 CPU: 0 UID: 0 PID: 9346 Comm: syz.3.1106 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:80 [inline] RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:102 [inline] RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:227 [inline] RIP: 0010:unwind_next_frame+0x1315/0x2390 arch/x86/kernel/unwind_orc.c:494 Code: 83 e0 fe 4c 8d 3c 45 00 00 00 00 49 01 ef 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 27 49 63 07 <4c> 01 f8 49 8d 4f 04 4c 39 e0 48 0f 46 e9 49 8d 47 fc 48 0f 47 d8 RSP: 0018:ffffc90000007358 EFLAGS: 00000246 RAX: fffffffffa09c56a RBX: ffffffff8ff04758 RCX: dffffc0000000000 RDX: ffffffff8ff04758 RSI: ffffffff909aaa44 RDI: ffffffff8bbf0600 RBP: ffffffff8ff04758 R08: 0000000000000001 R09: ffffffff81738d25 R10: ffffc90000007478 R11: ffffffff81ac2f50 R12: ffffffff89fa0d24 R13: ffffffff8ff04758 R14: ffffc90000007428 R15: ffffffff8ff04758 FS: 00007f411495c6c0(0000) GS:ffff88812613b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc0323156c0 CR3: 000000005f4ca000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:56 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:77 unpoison_slab_object mm/kasan/common.c:342 [inline] __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:368 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4970 [inline] slab_alloc_node mm/slub.c:5280 [inline] kmem_cache_alloc_noprof+0x367/0x6e0 mm/slub.c:5287 dst_alloc+0x105/0x170 net/core/dst.c:89 ip6_dst_alloc net/ipv6/route.c:342 [inline] icmp6_dst_alloc+0x75/0x420 net/ipv6/route.c:3322 ndisc_send_skb+0x3f1/0x1510 net/ipv6/ndisc.c:491 addrconf_rs_timer+0x369/0x670 net/ipv6/addrconf.c:4037 call_timer_fn+0x17e/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:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:preempt_schedule_irq+0xb0/0x150 kernel/sched/core.c:7256 Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 10 00 00 00 74 64 bf 01 00 00 00 e8 3b 64 48 f6 e8 d6 39 80 f6 fb bf 01 00 00 00 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc90004746b40 EFLAGS: 00000286 RAX: 713dc679c3905f00 RBX: 0000000000000000 RCX: 713dc679c3905f00 RDX: 0000000000000007 RSI: ffffffff8d70d2ba RDI: 0000000000000001 RBP: ffffc90004746bf0 R08: ffffffff8f7cda77 R09: 1ffffffff1ef9b4e R10: dffffc0000000000 R11: fffffbfff1ef9b4f R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920008e8d68 irqentry_exit+0x6f/0x90 kernel/entry/common.c:211 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:206 [inline] RIP: 0010:unwind_next_frame+0x1bf/0x2390 arch/x86/kernel/unwind_orc.c:494 Code: 80 3c 28 00 4c 8b 7c 24 18 74 08 4c 89 ff e8 e8 45 b2 00 4d 8b 27 48 83 f3 01 48 c7 c2 80 72 68 8b 49 29 dc 0f 84 a2 01 00 00 <49> 81 fc 00 00 00 81 0f 92 c0 49 81 fc 38 25 4a 8b 0f 93 c1 08 c1 RSP: 0018:ffffc90004746cb8 EFLAGS: 00000286 RAX: 1ffff920008e8dba RBX: 0000000000000001 RCX: 713dc679c3905f00 RDX: ffffffff8b687280 RSI: ffffffff8bbf0640 RDI: ffffffff8bbf0600 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff81738d25 R10: ffffc90004746dd8 R11: ffffffff81ac2f50 R12: ffffffff891c46bb R13: ffffc90004746dd8 R14: ffffc90004746d88 R15: ffffc90004746dd0 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 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:311 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __slab_free+0x2e7/0x390 mm/slub.c:5962 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:352 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4970 [inline] slab_alloc_node mm/slub.c:5280 [inline] __kmalloc_cache_noprof+0x36f/0x6f0 mm/slub.c:5758 kmalloc_noprof include/linux/slab.h:957 [inline] kzalloc_noprof include/linux/slab.h:1094 [inline] nft_trans_alloc net/netfilter/nf_tables_api.c:159 [inline] nft_trans_table_add+0x56/0x430 net/netfilter/nf_tables_api.c:554 nf_tables_newtable+0xce3/0x1890 net/netfilter/nf_tables_api.c:1635 nfnetlink_rcv_batch net/netfilter/nfnetlink.c:526 [inline] nfnetlink_rcv_skb_batch net/netfilter/nfnetlink.c:649 [inline] nfnetlink_rcv+0x11d9/0x2590 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:742 ____sys_sendmsg+0x505/0x830 net/socket.c:2630 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2684 __sys_sendmsg net/socket.c:2716 [inline] __do_sys_sendmsg net/socket.c:2721 [inline] __se_sys_sendmsg net/socket.c:2719 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2719 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4113b8f6c9 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:00007f411495c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f4113de5fa0 RCX: 00007f4113b8f6c9 RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 000000000000000c RBP: 00007f4113c11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4113de6038 R14: 00007f4113de5fa0 R15: 00007ffeb05e6a78 Sending NMI from CPU 0 to CPUs 1: bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 3412 Comm: kworker/R-bat_e Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Workqueue: bat_events batadv_tt_purge RIP: 0010:accumulate_nsecs_to_secs+0x5d/0x540 kernel/time/timekeeping.c:2221 Code: 00 00 00 fc ff df 48 c7 84 24 c0 00 00 00 b3 8a b5 41 48 c7 84 24 c8 00 00 00 e6 6e 78 8d 48 c7 84 24 d0 00 00 00 a0 a5 ae 81 <4c> 8d a4 24 c0 00 00 00 49 c1 ec 03 48 b8 f1 f1 f1 f1 00 00 f3 f3 RSP: 0018:ffffc90000a078e0 EFLAGS: 00000082 RAX: 7aa3cf78b1a3f300 RBX: ffffffff997dd510 RCX: 0000000000000000 RDX: 0000000000010100 RSI: 00000000014fb84c RDI: ffffffff997dd510 RBP: ffffc90000a07a30 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: ffffffff81685030 R12: 0000000000de6f5c R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff997dd510 FS: 0000000000000000(0000) GS:ffff88812623b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2c3afffffc CR3: 0000000021706000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: logarithmic_accumulation kernel/time/timekeeping.c:2285 [inline] __timekeeping_advance+0x466/0x10d0 kernel/time/timekeeping.c:2341 timekeeping_advance kernel/time/timekeeping.c:2371 [inline] update_wall_time+0x31/0x200 kernel/time/timekeeping.c:2381 tick_sched_do_timer kernel/time/tick-sched.c:232 [inline] tick_nohz_handler+0xad/0x520 kernel/time/tick-sched.c:290 __run_hrtimer kernel/time/hrtimer.c:1777 [inline] __hrtimer_run_queues+0x4e0/0xc60 kernel/time/hrtimer.c:1841 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1903 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline] __sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1058 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1052 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2034 [inline] RIP: 0010:vprintk_emit+0x49d/0x590 kernel/printk/printk.c:2422 Code: 0f 84 34 ff ff ff e8 d2 ed 1f 00 fb eb 44 e8 ca ed 1f 00 e8 45 49 a6 09 4d 85 f6 74 94 e8 bb ed 1f 00 fb 48 c7 c7 00 16 f3 8d <31> f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 45 31 c9 53 e8 0b 39 RSP: 0018:ffffc90000a07f60 EFLAGS: 00000246 RAX: ffffffff81a018d5 RBX: ffffffff81a0172e RCX: ffff8880307e8000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffffff8df31600 RBP: ffffc90000a08070 R08: ffffffff8f7cda77 R09: 1ffffffff1ef9b4e R10: dffffc0000000000 R11: fffffbfff1ef9b4f R12: 0000000000000000 R13: 000000000000006f R14: 0000000000000200 R15: 1ffff92000140ff0 _printk+0xcf/0x120 kernel/printk/printk.c:2448 br_fdb_update+0x62d/0x690 net/bridge/br_fdb.c:999 br_handle_frame_finish+0x587/0x1c50 net/bridge/br_input.c:144 br_nf_hook_thresh+0x3c6/0x4a0 net/bridge/br_netfilter_hooks.c:-1 br_nf_pre_routing_finish_ipv6+0x999/0xd60 net/bridge/br_netfilter_ipv6.c:-1 NF_HOOK include/linux/netfilter.h:318 [inline] br_nf_pre_routing_ipv6+0x37e/0x6b0 net/bridge/br_netfilter_ipv6.c:184 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline] nf_hook_bridge_pre net/bridge/br_input.c:291 [inline] br_handle_frame+0x982/0x14c0 net/bridge/br_input.c:442 __netif_receive_skb_core+0x10b9/0x4380 net/core/dev.c:5966 __netif_receive_skb_one_core net/core/dev.c:6077 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6192 process_backlog+0x60e/0x14f0 net/core/dev.c:6544 __napi_poll+0xc7/0x360 net/core/dev.c:7594 napi_poll net/core/dev.c:7657 [inline] net_rx_action+0x5f7/0xdf0 net/core/dev.c:7784 handle_softirqs+0x286/0x870 kernel/softirq.c:622 do_softirq+0xec/0x180 kernel/softirq.c:523 __local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:450 spin_unlock_bh include/linux/spinlock.h:396 [inline] batadv_tt_local_purge+0x2a7/0x340 net/batman-adv/translation-table.c:1315 batadv_tt_purge+0x35/0x9e0 net/batman-adv/translation-table.c:3509 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346 rescuer_thread+0x53c/0xdd0 kernel/workqueue.c:3523 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245