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): P22148/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=198609, q=466637 ncpus=2)
task:syz.0.3792 state:R running task stack:24456 pid:22148 tgid:22139 ppid:17457 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7606
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x920 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 30 3d 47 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 42 b7 f2 12 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d f7 f7 d9
RSP: 0018:ffffc9000ffb78c8 EFLAGS: 00000282
RAX: eb3f9409b8b8ac00 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 00000000990856af RSI: ffffffff8e6e85e2 RDI: ffffffff8c6ddb80
RBP: ffff88802d6d3e80 R08: ffffffff82249d99 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1006111ca5 R12: ffffffff8fd5c8e0
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
__pte_offset_map+0x45/0x240 mm/pgtable-generic.c:290
pte_offset_map_lock+0x46/0x210 mm/pgtable-generic.c:400
follow_page_pte+0xc9/0xf10 mm/gup.c:812
follow_pmd_mask mm/gup.c:-1 [inline]
follow_pud_mask mm/gup.c:967 [inline]
follow_p4d_mask mm/gup.c:984 [inline]
follow_page_mask mm/gup.c:1023 [inline]
__get_user_pages+0xa77/0x2750 mm/gup.c:1426
populate_vma_page_range+0x2be/0x3c0 mm/gup.c:1860
__mm_populate+0x25f/0x390 mm/gup.c:1963
mm_populate include/linux/mm.h:4288 [inline]
vm_mmap_pgoff+0x353/0x4e0 mm/util.c:586
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f55a139e559
RSP: 002b:00007f559f5d5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f55a1626450 RCX: 00007f55a139e559
RDX: 0000000002000004 RSI: 0000000000c00000 RDI: 0000200000001000
RBP: 00007f55a1435ab8 R08: ffffffffffffffff R09: 0000000000000000
R10: 000000000003b071 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f55a16264e8 R14: 00007f55a1626450 R15: 00007ffc30aac8c8
rcu: rcu_preempt kthread starved for 328 jiffies! g198609 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->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:27496 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
__schedule_loop kernel/sched/core.c:7361 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7376
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2330
kthread+0x38b/0x480 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: 12962 Comm: kworker/u8:14 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: krds_cp_wq#11/6 rds_connect_worker
RIP: 0010:fib_table_lookup+0x1f8/0x17d0 net/ipv4/fib_trie.c:1467
Code: ec 44 89 f9 49 d3 ec 31 ff 4c 89 e6 e8 f1 17 62 f7 4d 85 e4 0f 85 83 02 00 00 49 bc 00 00 00 00 00 fc ff df 42 0f b6 44 25 00 <84> c0 4c 8b 7c 24 18 0f 85 c7 01 00 00 41 0f b6 2e 31 ff 89 ee e8
RSP: 0018:ffffc90000a17de0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff1100a4e0604 RCX: ffff88807f1c3e80
RDX: 8000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff1100a4e0604 R08: 0000000000000100 R09: 0000000000000000
R10: ffffc90000a18000 R11: fffff52000143006 R12: dffffc0000000000
R13: 0000000000000016 R14: ffff888052703025 R15: 0000000000000005
FS: 0000000000000000(0000) GS:ffff888123bbd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe923851bc5 CR3: 000000002abc6000 CR4: 00000000003526f0
Call Trace:
fib_lookup+0x1c5/0x440 include/net/ip_fib.h:391
ip_route_output_key_hash_rcu+0x294/0x2720 net/ipv4/route.c:2852
ip_route_output_key_hash+0x18d/0x2a0 net/ipv4/route.c:2743
__ip_route_output_key include/net/route.h:175 [inline]
ip_route_output_flow+0x2a/0x150 net/ipv4/route.c:2970
ip_route_output_key include/net/route.h:185 [inline]
ip_route_me_harder+0x762/0xfe0 net/ipv4/netfilter.c:54
synproxy_send_tcp+0x332/0x670 net/netfilter/nf_synproxy_core.c:434
synproxy_send_client_synack+0x89b/0xde0 net/netfilter/nf_synproxy_core.c:487
nft_synproxy_eval_v4+0x362/0x4e0 net/netfilter/nft_synproxy.c:59
nft_synproxy_do_eval+0x389/0x5d0 net/netfilter/nft_synproxy.c:142
expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
nft_do_chain+0x48d/0x1b10 net/netfilter/nf_tables_core.c:285
nft_do_chain_ipv4+0x195/0x290 net/netfilter/nft_chain_filter.c:24
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:633
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:323
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:325
__netif_receive_skb_one_core net/core/dev.c:6405 [inline]
__netif_receive_skb net/core/dev.c:6518 [inline]
process_backlog+0xa6b/0x18b0 net/core/dev.c:6869
__napi_poll+0xaa/0x330 net/core/dev.c:7938
napi_poll net/core/dev.c:8001 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8158
handle_softirqs+0x226/0x860 kernel/softirq.c:645
do_softirq+0x77/0xd0 kernel/softirq.c:546
__local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
lock_sock include/net/sock.h:1715 [inline]
__inet6_bind+0x301/0xf30 net/ipv6/af_inet6.c:292
kernel_bind+0x13e/0x1c0 net/socket.c:3677
rds_tcp_conn_path_connect+0x53b/0x920 net/rds/tcp_connect.c:175
rds_connect_worker+0x1d8/0x290 net/rds/threads.c:176
process_one_work kernel/workqueue.c:3396 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
kthread+0x38b/0x480 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