ip6_tunnel: ip6gre1 xmit: Local address not yet configured!
ip6_tunnel: ip6gre1 xmit: Local address not yet configured!
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P24775/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=149569, q=3782 ncpus=2)
task:syz.2.6896 state:R running task stack:24256 pid:24775 tgid:24761 ppid:22329 task_flags:0x400040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7235
irqentry_exit+0x599/0x620 kernel/entry/common.c:239
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:unwind_next_frame+0x484/0x23c0 arch/x86/kernel/unwind_orc.c:520
Code: d2 84 c0 48 0f 45 d1 48 89 15 b8 a3 ab 11 48 85 d2 0f 84 40 02 00 00 4c 8d 62 04 4c 8d 6a 05 4c 89 e0 48 c1 e8 03 0f b6 04 28 <84> c0 0f 85 66 18 00 00 4c 89 e8 48 c1 e8 03 0f b6 04 28 84 c0 0f
RSP: 0018:ffffc90003ae70d8 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffffffff903396b4 RCX: ffffffff903396b8
RDX: ffffffff90b488d4 RSI: ffffffff90b488d4 RDI: ffffffff8c27ae20
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff8e7602e0
R10: ffffc90003ae71f8 R11: ffffffff81b0bb90 R12: ffffffff90b488d8
R13: ffffffff90b488d9 R14: ffffc90003ae71a8 R15: ffffffff903396b4
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
__slab_free+0x263/0x2b0 mm/slub.c:5551
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5238 [inline]
__kmalloc_node_track_caller_noprof+0x4db/0x7b0 mm/slub.c:5346
kmalloc_reserve net/core/skbuff.c:635 [inline]
__alloc_skb+0x2c1/0x7d0 net/core/skbuff.c:713
alloc_skb include/linux/skbuff.h:1383 [inline]
_sctp_make_chunk+0x59/0x290 net/sctp/sm_make_chunk.c:1435
sctp_make_data net/sctp/sm_make_chunk.c:1467 [inline]
sctp_make_datafrag_empty+0x12a/0x240 net/sctp/sm_make_chunk.c:732
sctp_datamsg_from_user+0x729/0xef0 net/sctp/chunk.c:263
sctp_sendmsg_to_asoc+0x1416/0x1900 net/sctp/socket.c:1858
sctp_sendmsg+0x1b3d/0x2c10 net/sctp/socket.c:2030
sock_sendmsg_nosec net/socket.c:727 [inline]
__sock_sendmsg net/socket.c:742 [inline]
__sys_sendto+0x627/0x7a0 net/socket.c:2206
__do_sys_sendto net/socket.c:2213 [inline]
__se_sys_sendto net/socket.c:2209 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2209
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd65b39c799
RSP: 002b:00007fd6589f0028 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fd65b616450 RCX: 00007fd65b39c799
RDX: 0000000000034000 RSI: 0000200000847fff RDI: 0000000000000004
RBP: 00007fd65b432bd9 R08: 000020000005ffe4 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd65b6164e8 R14: 00007fd65b616450 R15: 00007fd65b73fa48
rcu: rcu_preempt kthread starved for 786 jiffies! g149569 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:27656 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x15dd/0x52d0 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x312/0x11d0 kernel/rcu/tree.c:2095
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
kthread+0x388/0x470 kernel/kthread.c:467
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 9651 Comm: kworker/u8:25 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:lockdep_recursion_inc kernel/locking/lockdep.c:465 [inline]
RIP: 0010:lock_is_held_type+0x4e/0x150 kernel/locking/lockdep.c:5939
Code: 90 6e 07 85 c0 0f 85 d5 00 00 00 65 4c 8b 2d 11 4b 6e 07 41 83 bd 54 0b 00 00 00 0f 85 bf 00 00 00 89 f5 49 89 fe 9c 41 5c fa <48> c7 c7 dc c5 f0 8d e8 a6 18 00 00 65 ff 05 8f 90 6e 07 41 83 bd
RSP: 0018:ffffc90000a07b20 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 00000000ffffffff RCX: 0000000000000102
RDX: ffff8880310dbd00 RSI: 00000000ffffffff RDI: ffffffff8e7602e0
RBP: 00000000ffffffff R08: ffffc90000a07c2f R09: 0000000000000000
R10: ffffc90000a07c20 R11: fffff52000140f86 R12: 0000000000000246
R13: ffff8880310dbd00 R14: ffffffff8e7602e0 R15: ffff888058f95980
FS: 0000000000000000(0000) GS:ffff888125564000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30522ff8 CR3: 000000000e54c000 CR4: 00000000003526f0
DR0: 0000000040000005 DR1: 0000000100000000 DR2: 0000000000000898
DR3: 0000000000000006 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
fib6_node_lookup_1+0x15b/0x8a0 net/ipv6/ip6_fib.c:1631
fib6_node_lookup+0xe4/0x1d0 net/ipv6/ip6_fib.c:1700
fib6_table_lookup+0xbc/0xa80 net/ipv6/route.c:2242
ip6_pol_route+0x228/0x13d0 net/ipv6/route.c:2282
pol_lookup_func include/net/ip6_fib.h:617 [inline]
fib6_rule_lookup+0x222/0x730 net/ipv6/fib6_rules.c:120
ip6_route_output_flags_noref net/ipv6/route.c:2697 [inline]
ip6_route_output_flags+0x364/0x5d0 net/ipv6/route.c:2709
ip6_route_output include/net/ip6_route.h:93 [inline]
__nf_ip6_route+0x42/0xd0 net/ipv6/netfilter.c:116
nf_ip6_route include/linux/netfilter_ipv6.h:111 [inline]
synproxy_send_tcp_ipv6+0x275/0x6d0 net/netfilter/nf_synproxy_core.c:836
synproxy_send_client_synack_ipv6+0x814/0xcb0 net/netfilter/nf_synproxy_core.c:898
nft_synproxy_eval_v6+0x34a/0x4e0 net/netfilter/nft_synproxy.c:91
nft_synproxy_do_eval+0x3ce/0x580 net/netfilter/nft_synproxy.c:146
expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
nft_do_chain+0x45e/0x1990 net/netfilter/nf_tables_core.c:285
nft_do_chain_inet+0x29d/0x380 net/netfilter/nft_chain_filter.c:161
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:623
nf_hook include/linux/netfilter.h:273 [inline]
NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:316
ip6_input+0x16a/0x270 net/ipv6/ip6_input.c:500
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318
__netif_receive_skb_one_core net/core/dev.c:6167 [inline]
__netif_receive_skb net/core/dev.c:6280 [inline]
process_backlog+0x7dd/0x1950 net/core/dev.c:6631
__napi_poll+0xae/0x340 net/core/dev.c:7695
napi_poll net/core/dev.c:7758 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7910
handle_softirqs+0x22a/0x870 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline]
RIP: 0010:smp_call_function_many_cond+0xce5/0x12c0 kernel/smp.c:877
Code: 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 74 e2 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 1f de 0b 00 eb 38 f3 90 <42> 0f b6 04 2b 84 c0 75 11 41 f7 04 24 01 00 00 00 74 1e e8 03 de
RSP: 0018:ffffc90003767720 EFLAGS: 00000293
RAX: ffffffff81b9b7dd RBX: 1ffff110170c8515 RCX: ffff8880310dbd00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003767860 R08: ffffffff90118cb7 R09: 1ffffffff2023196
R10: dffffc0000000000 R11: fffffbfff2023197 R12: ffff8880b86428a8
R13: dffffc0000000000 R14: ffff8880b873bf80 R15: 0000000000000000
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1043
on_each_cpu include/linux/smp.h:72 [inline]
smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2761 [inline]
smp_text_poke_batch_finish+0x5f5/0x1160 arch/x86/kernel/alternative.c:2971
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x128/0x240 kernel/jump_label.c:210
static_key_enable+0x1a/0x20 kernel/jump_label.c:223
toggle_allocation_gate+0xab/0x290 mm/kfence/core.c:900
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
worker_thread+0xa50/0xfc0 kernel/workqueue.c:3439
kthread+0x388/0x470 kernel/kthread.c:467
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245