ip6_tunnel: ip6tnl1 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): P17514/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=187649, q=1252861 ncpus=2)
task:syz-executor state:R running task stack:22176 pid:17514 tgid:17514 ppid:17482 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1821/0x5740 kernel/sched/core.c:7189
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
irqentry_exit+0x14f/0x760 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:debug_lockdep_rcu_enabled+0xd/0x40 kernel/rcu/update.c:320
Code: 8d 67 48 0f b9 3a 90 eb ca cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 83 3d 63 16 88 04 00 <74> 1d 83 3d 1a 48 88 04 00 74 14 65 48 8b 0d 58 b5 90 07 31 c0 83
RSP: 0018:ffffc9000e117410 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffffff90c50e01 RCX: ffffc9000e117550
RDX: ffffc9000e117501 RSI: dffffc0000000000 RDI: ffffc9000e117550
RBP: dffffc0000000000 R08: ffffc9000e117538 R09: 0000000000000000
R10: ffffc9000e117598 R11: fffff52001c22eb5 R12: ffffc9000e117548
R13: ffffc9000e110000 R14: ffffc9000e117548 R15: ffffffff8176f256
rcu_read_unlock include/linux/rcupdate.h:867 [inline]
class_rcu_destructor include/linux/rcupdate.h:1181 [inline]
unwind_next_frame+0x1b6d/0x2550 arch/x86/kernel/unwind_orc.c:709
__unwind_start+0x5b8/0x760 arch/x86/kernel/unwind_orc.c:787
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe3/0x150 arch/x86/kernel/stacktrace.c:24
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:1402 [inline]
__free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943
__slab_free+0x274/0x2c0 mm/slub.c:5612
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4569 [inline]
slab_alloc_node mm/slub.c:4898 [inline]
__do_kmalloc_node mm/slub.c:5294 [inline]
__kmalloc_noprof+0x316/0x760 mm/slub.c:5307
kmalloc_noprof include/linux/slab.h:954 [inline]
tomoyo_realpath_from_path+0xe3/0x5d0 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x283/0x560 security/tomoyo/file.c:827
tomoyo_path_unlink+0xaa/0xf0 security/tomoyo/tomoyo.c:162
security_path_unlink+0x15f/0x330 security/security.c:1483
filename_unlinkat+0x349/0x610 fs/namei.c:5565
__do_sys_unlink fs/namei.c:5603 [inline]
__se_sys_unlink+0x2e/0x140 fs/namei.c:5600
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd2e4b9bf47
RSP: 002b:00007fff46421dd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd2e4b9bf47
RDX: 00007fff46421e00 RSI: 00007fff46421e90 RDI: 00007fff46421e90
RBP: 00007fff46421e90 R08: 00007fff46422e90 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000206 R12: 00007fff46422f20
R13: 00007fd2e4c321ca R14: 00000000000f6635 R15: 00007fff46422f60
rcu: rcu_preempt kthread starved for 1148 jiffies! g187649 f0x2 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:27544 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1821/0x5740 kernel/sched/core.c:7189
__schedule_loop kernel/sched/core.c:7268 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7283
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+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 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: 28083 Comm: kworker/u8:6 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: krds_cp_wq#10/0 rds_connect_worker
RIP: 0010:rcu_lockdep_current_cpu_online+0x42/0x120 kernel/rcu/tree.c:-1
Code: 0f 85 d5 00 00 00 83 3d ff 9d 85 0e 00 0f 84 c8 00 00 00 65 ff 05 1e 3d 8e 11 e8 59 9d fd 09 89 c3 83 f8 08 0f 83 c7 00 00 00 <49> be 00 00 00 00 00 fc ff df 48 8d 1c dd 90 67 26 8e 48 89 d8 48
RSP: 0018:ffffc90000a07eb0 EFLAGS: 00000297
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000301
RDX: ffff888035ef0000 RSI: ffffffff8c28af40 RDI: ffffffff8c28af00
RBP: ffffc90000a08190 R08: ffffffff897d2d76 R09: ffffffff8e95ce00
R10: 0aaaaaaaaaaa0000 R11: 00080aaaaaaaaaaa R12: ffff888049d15acc
R13: 1ffff110093a2b52 R14: 0000000000000001 R15: ffff888049d15a90
FS: 0000000000000000(0000) GS:ffff88812538a000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9582d94ff8 CR3: 000000006a544000 CR4: 00000000003526f0
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:113 [inline]
rcu_read_lock_bh_held+0x23/0x50 kernel/rcu/update.c:374
skb_update_prio net/core/dev.c:4314 [inline]
__dev_queue_xmit+0x559/0x3950 net/core/dev.c:4793
dev_queue_xmit include/linux/netdevice.h:3418 [inline]
neigh_hh_output include/net/neighbour.h:544 [inline]
neigh_output include/net/neighbour.h:558 [inline]
ip_finish_output2+0xc68/0x1070 net/ipv4/ip_output.c:237
NF_HOOK_COND include/linux/netfilter.h:307 [inline]
ip_output+0x29f/0x450 net/ipv4/ip_output.c:438
synproxy_send_client_synack+0x8c1/0xe30 net/netfilter/nf_synproxy_core.c:485
nft_synproxy_eval_v4+0x34a/0x4e0 net/netfilter/nft_synproxy.c:60
nft_synproxy_do_eval+0x305/0x580 net/netfilter/nft_synproxy.c:142
expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
nft_do_chain+0x48d/0x1ae0 net/netfilter/nf_tables_core.c:285
nft_do_chain_inet+0x360/0x4b0 net/netfilter/nft_chain_filter.c:162
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
nf_hook include/linux/netfilter.h:273 [inline]
NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:316
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318
__netif_receive_skb_one_core net/core/dev.c:6202 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0xaa3/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__inet_dev_addr_type+0x140/0x500 net/ipv4/fib_frontend.c:-1
Code: 00 81 e3 f0 00 00 00 bf e0 00 00 00 89 de e8 27 25 9c f7 81 fb e0 00 00 00 75 0f e8 da 20 9c f7 b8 05 00 00 00 e9 e8 02 00 00 <4c> 8d ac 24 a0 00 00 00 e8 13 ef 81 f7 48 8d 05 00 00 00 00 48 c7
RSP: 0018:ffffc90007927600 EFLAGS: 00000287
RAX: ffffffff8a29a379 RBX: 00000000000000a0 RCX: 0000000000000000
RDX: ffff888035ef0000 RSI: 00000000000000a0 RDI: 00000000000000e0
RBP: ffffc90007927760 R08: ffff888035ef0000 R09: 0000000000000002
R10: 00000000ffffffff R11: 0000000000000000 R12: ffff888042b58000
R13: ffffc90007927640 R14: dffffc0000000000 R15: 1ffff92000f24ec4
__inet_bind+0x135/0xa90 net/ipv4/af_inet.c:500
kernel_bind+0x13e/0x1c0 net/socket.c:3660
rds_tcp_conn_path_connect+0x53e/0x930 net/rds/tcp_connect.c:175
rds_connect_worker+0x1d8/0x290 net/rds/threads.c:176
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
kthread+0x389/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245