watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.1.402:6787] Modules linked in: irq event stamp: 11472365 hardirqs last enabled at (11472364): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (11472365): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1037 softirqs last enabled at (95844): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (95844): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (95844): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (95847): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (95847): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (95847): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 1 UID: 0 PID: 6787 Comm: syz.1.402 Not tainted 6.11.0-syzkaller-10575-g9502a7de5a61 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:56 [inline] RIP: 0010:unwind_next_frame+0x1817/0x22d0 arch/x86/kernel/unwind_orc.c:665 Code: 8d 7d 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 9d 24 bd 00 4c 8b 75 08 48 8d 5d 10 48 89 d8 48 c1 e8 03 42 80 3c 20 00 <74> 08 48 89 df e8 7f 24 bd 00 4d 39 fe 0f 87 b2 00 00 00 48 8b 03 RSP: 0018:ffffc90000a183f0 EFLAGS: 00000246 RAX: 1ffff9200014309a RBX: ffffc90000a184d0 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffffc90002d00000 RDI: ffffc90000a184c8 RBP: ffffc90000a184c0 R08: ffffc90002d07b48 R09: 0000000000000000 R10: ffffc90000a18510 R11: fffff520001430a4 R12: dffffc0000000000 R13: ffffc90000a184c0 R14: ffffc90002d00000 R15: ffffc90002d07b58 FS: 00007f173b6506c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c28703e CR3: 000000006bf3a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:247 [inline] slab_post_alloc_hook mm/slub.c:4086 [inline] slab_alloc_node mm/slub.c:4135 [inline] kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4187 kmalloc_reserve+0xa8/0x2a0 net/core/skbuff.c:587 __alloc_skb+0x1f3/0x440 net/core/skbuff.c:678 alloc_skb include/linux/skbuff.h:1322 [inline] ndisc_alloc_skb+0xed/0x2c0 net/ipv6/ndisc.c:424 ndisc_send_rs+0x27e/0x6c0 net/ipv6/ndisc.c:705 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:smp_call_function_many_cond+0x18a4/0x2ca0 kernel/smp.c:879 Code: b2 f6 0b 00 4c 8b 7c 24 20 4d 85 f6 75 11 e8 a3 f6 0b 00 83 7c 24 18 00 75 16 e9 c6 0b 00 00 e8 92 f6 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:ffffc90002d07580 EFLAGS: 00000202 RAX: ffffffff8188beae RBX: 0000000000000000 RCX: 0000000000040000 RDX: ffffc9000b3cd000 RSI: 000000000000f1b0 RDI: 000000000000f1b1 RBP: ffffc90002d07780 R08: ffffffff8188be80 R09: 1ffffffff284d0f8 R10: dffffc0000000000 R11: fffffbfff284d0f9 R12: dffffc0000000000 R13: ffff8880b873fc80 R14: 0000000000000200 R15: 0000000000000000 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: 0033:0x7f173a77dff9 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:00007f173b650038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f173a935f80 RCX: 00007f173a77dff9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000240 RBP: 00007f173a7f0296 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f173a935f80 R15: 00007ffd3e53d858 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6784 Comm: syz.0.400 Not tainted 6.11.0-syzkaller-10575-g9502a7de5a61 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:exc_int3+0x0/0x80 arch/x86/kernel/traps.c:785 Code: 00 31 d2 e8 f2 d4 30 f9 e9 16 fb ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 55 53 48 89 fb e8 e2 11 00 00 85 c0 74 07 5b 5d c3 cc RSP: 0018:ffffc900000068c0 EFLAGS: 00000093 RAX: ffffc900000068c8 RBX: 0000000000000000 RCX: ffffffff8be0176a RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc900000068c8 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f0173ae56c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f99143fb6c0 CR3: 0000000027280000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: asm_exc_int3+0x39/0x40 arch/x86/include/asm/idtentry.h:622 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:trace_lock_release include/trace/events/lock.h:69 [inline] RIP: 0010:lock_release+0x81/0xa30 kernel/locking/lockdep.c:5833 Code: 3c 70 81 4c 8d 64 24 60 49 c1 ec 03 48 b8 f1 f1 f1 f1 04 f2 00 f2 4b 89 04 3c 48 b8 f2 f2 00 f3 f3 f3 f3 f3 4b 89 44 3c 08 cc <1f> 44 00 00 65 8b 05 f0 9a 93 7e 83 f8 08 0f 83 fe 05 00 00 89 c3 RSP: 0018:ffffc900000069a0 EFLAGS: 00000802 RAX: f3f3f3f3f300f2f2 RBX: 0000000000000046 RCX: ad14038196036000 RDX: dffffc0000000000 RSI: ffffffff818256ec RDI: ffffffff8e958708 RBP: ffffc90000006ad0 R08: ffffffff942687cf R09: 1ffffffff284d0f9 R10: dffffc0000000000 R11: fffffbfff284d0fa R12: 1ffff92000000d40 R13: ffffffff818256ec R14: ffffc90000006b00 R15: dffffc0000000000 seqcount_lockdep_reader_access+0x10f/0x220 include/linux/seqlock.h:71 timekeeping_debug_get_ns kernel/time/timekeeping.c:256 [inline] timekeeping_get_ns+0x5c/0x420 kernel/time/timekeeping.c:401 ktime_get_update_offsets_now+0x90/0x250 kernel/time/timekeeping.c:2449 hrtimer_update_base kernel/time/hrtimer.c:634 [inline] hrtimer_interrupt+0x590/0x990 kernel/time/hrtimer.c:1849 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1043 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1037 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__read_once_word_nocheck+0x3/0x10 include/asm-generic/rwonce.h:67 Code: bd 00 48 ba 00 00 00 00 00 fc ff df e9 9f fc ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 07 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90000006e68 EFLAGS: 00000283 RAX: ffffffff81742429 RBX: ffffc90000006f50 RCX: 1ffff92000000de8 RDX: ffffffff90a5db42 RSI: 0000000000000002 RDI: ffffc90002d565d8 RBP: ffffc90002d50000 R08: 0000000000000001 R09: ffffc90000007030 R10: ffffc90000006f90 R11: ffffffff81806870 R12: ffffc90002d58000 R13: ffffc90002d565d8 R14: ffffc90000006f40 R15: 1ffff92000000dea deref_stack_reg arch/x86/kernel/unwind_orc.c:406 [inline] unwind_next_frame+0xc9b/0x22d0 arch/x86/kernel/unwind_orc.c:585 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541 __call_rcu_common kernel/rcu/tree.c:3086 [inline] call_rcu+0x167/0xa70 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:vsnprintf+0xea3/0x1da0 Code: e8 52 4f d7 f5 4c 8b 74 24 30 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 c7 fc 40 f6 49 8b 1e 48 8d 43 08 49 89 06 <4c> 8b 7c 24 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 84 73 06 00 RSP: 0018:ffffc90002d560e0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc90002d56208 RCX: 0000000000040000 RDX: ffffc90002d56240 RSI: 000000000000de07 RDI: 000000000000de08 RBP: ffffc90002d561d0 R08: ffffffff8bbd5f8d R09: ffffffff8bbd58f4 R10: 0000000000000012 R11: ffff888031e38000 R12: ffffffff8c0b900b R13: dffffc0000000000 R14: ffff0a1000000609 R15: 1ffff920005aac48 sprintf+0xda/0x120 lib/vsprintf.c:3007 print_time kernel/printk/printk.c:1362 [inline] info_print_prefix+0x16b/0x310 kernel/printk/printk.c:1388 record_print_text kernel/printk/printk.c:1437 [inline] printk_get_next_message+0x6da/0xbe0 kernel/printk/printk.c:2978 console_emit_next_record kernel/printk/printk.c:3046 [inline] console_flush_all+0x569/0xeb0 kernel/printk/printk.c:3180 __console_flush_and_unlock kernel/printk/printk.c:3239 [inline] console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3279 vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2407 _printk+0xd5/0x120 kernel/printk/printk.c:2432 ip_tun_from_nlattr+0x46e4/0x52c0 metadata_from_nlattrs+0x1042/0x4890 net/openvswitch/flow_netlink.c:1220 ovs_key_from_nlattrs+0xea/0x9190 net/openvswitch/flow_netlink.c:1529 ovs_nla_get_match+0x2a6/0x1a30 net/openvswitch/flow_netlink.c:1831 ovs_flow_cmd_del+0x277/0x820 net/openvswitch/datapath.c:1392 genl_family_rcv_msg_doit net/netlink/genetlink.c:1115 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xb14/0xec0 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2603 ___sys_sendmsg net/socket.c:2657 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2686 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: 0033:0x7f0172d7dff9 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:00007f0173ae5038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f0172f35f80 RCX: 00007f0172d7dff9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 000000000000000b RBP: 00007f0172df0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f0172f35f80 R15: 00007fff250e1408