ip6_tunnel: ip6gretap0 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): P1051/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=68021, q=915 ncpus=2)
task:kworker/u8:6 state:R running task stack:21544 pid:1051 tgid:1051 ppid:2 task_flags:0x24248060 flags:0x00080000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
preempt_schedule_notrace+0x57/0x90 kernel/sched/core.c:7506
preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13
rcu_is_watching+0x7f/0xb0 kernel/rcu/tree.c:753
trace_lock_acquire include/trace/events/lock.h:23 [inline]
lock_acquire+0x5f/0x350 kernel/locking/lockdep.c:5831
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:840 [inline]
percpu_ref_put_many+0x3d/0x240 include/linux/percpu-refcount.h:330
percpu_ref_put include/linux/percpu-refcount.h:351 [inline]
blk_mq_dispatch_list+0xd31/0xe10 block/blk-mq.c:2922
blk_mq_flush_plug_list+0x45f/0x540 block/blk-mq.c:2966
__blk_flush_plug+0x3ed/0x4d0 block/blk-core.c:1266
blk_flush_plug include/linux/blkdev.h:1222 [inline]
io_schedule_prepare kernel/sched/core.c:8123 [inline]
io_schedule+0x77/0xd0 kernel/sched/core.c:8153
rq_qos_wait+0x266/0x360 block/blk-rq-qos.c:307
__wbt_wait block/blk-wbt.c:598 [inline]
wbt_wait+0x326/0x550 block/blk-wbt.c:658
__rq_qos_throttle+0x6b/0xb0 block/blk-rq-qos.c:66
rq_qos_throttle block/blk-rq-qos.h:164 [inline]
blk_mq_get_new_requests block/blk-mq.c:3032 [inline]
blk_mq_submit_bio+0x1522/0x2a40 block/blk-mq.c:3170
__submit_bio_noacct_mq block/blk-core.c:756 [inline]
submit_bio_noacct_nocheck+0x2f4/0xa40 block/blk-core.c:790
blk_crypto_submit_bio include/linux/blk-crypto.h:203 [inline]
ext4_io_submit+0x11b/0x190 fs/ext4/page-io.c:404
ext4_do_writepages+0x1293/0x47a0 fs/ext4/inode.c:2969
ext4_writepages+0x241/0x3b0 fs/ext4/inode.c:3043
do_writepages+0x338/0x560 mm/page-writeback.c:2571
__writeback_single_inode+0x12e/0xf90 fs/fs-writeback.c:1787
writeback_sb_inodes+0x9de/0x1b00 fs/fs-writeback.c:2079
__writeback_inodes_wb+0x114/0x240 fs/fs-writeback.c:2155
wb_writeback+0x42f/0xad0 fs/fs-writeback.c:2266
wb_check_old_data_flush fs/fs-writeback.c:2370 [inline]
wb_do_writeback fs/fs-writeback.c:2449 [inline]
wb_workfn+0xc92/0x10f0 fs/fs-writeback.c:2477
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
kthread+0x388/0x470 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: rcu_preempt kthread starved for 10245 jiffies! g68021 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7326
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2123
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2325
kthread+0x388/0x470 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 4988 Comm: udevd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:23 [inline]
RIP: 0010:lock_acquire+0x5f/0x350 kernel/locking/lockdep.c:5831
Code: 89 44 24 58 0f 1f 44 00 00 65 8b 05 2f 4c ca 11 83 f8 08 0f 83 83 01 00 00 89 c0 48 0f a3 05 18 e3 b4 0e 73 0d e8 f1 29 09 00 <84> c0 0f 84 ca 01 00 00 83 3d 12 16 b5 0e 00 0f 84 d3 00 00 00 48
RSP: 0018:ffffc90000006da0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000080000101
RDX: 0000000000000000 RSI: ffffffff8c4bdd60 RDI: ffffffff8c4bdd20
RBP: ffffffff8177927f R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90000006f38 R11: ffffffff81b20a10 R12: 0000000000000002
R13: ffffffff8eb59c60 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f839e662880(0000) GS:ffff888124f4f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dc96f81450 CR3: 000000007dcd2000 CR4: 00000000003526f0
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:840 [inline]
class_rcu_constructor include/linux/rcupdate.h:1183 [inline]
unwind_next_frame+0xac/0x2550 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2677 [inline]
slab_free mm/slub.c:6377 [inline]
kmem_cache_free+0x182/0x650 mm/slub.c:6504
skb_ext_reset include/linux/skbuff.h:5117 [inline]
skb_release_head_state+0x270/0x360 net/core/skbuff.c:1189
skb_release_all net/core/skbuff.c:1195 [inline]
__kfree_skb+0x24/0x210 net/core/skbuff.c:1211
kfree_skb_reason include/linux/skbuff.h:1323 [inline]
kfree_skb include/linux/skbuff.h:1332 [inline]
mrp_rcv+0x1588/0x1840 net/802/mrp.c:836
__netif_receive_skb_one_core net/core/dev.c:6215 [inline]
__netif_receive_skb net/core/dev.c:6328 [inline]
netif_receive_skb_internal net/core/dev.c:6414 [inline]
netif_receive_skb+0x4af/0xbf0 net/core/dev.c:6473
NF_HOOK+0xa4/0x3a0 include/linux/netfilter.h:325
br_handle_frame_finish+0x1192/0x1990 net/bridge/br_input.c:-1
nf_hook_bridge_pre net/bridge/br_input.c:313 [inline]
br_handle_frame+0x81b/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x989/0x30b0 net/core/dev.c:6102
__netif_receive_skb_one_core net/core/dev.c:6213 [inline]
__netif_receive_skb net/core/dev.c:6328 [inline]
process_backlog+0x706/0x1860 net/core/dev.c:6679
__napi_poll+0xaa/0x330 net/core/dev.c:7738
napi_poll net/core/dev.c:7801 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:7958
handle_softirqs+0x225/0x840 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:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:qlink_to_object mm/kasan/quarantine.c:140 [inline]
RIP: 0010:qlink_free mm/kasan/quarantine.c:145 [inline]
RIP: 0010:qlist_free_all+0x77/0x100 mm/kasan/quarantine.c:179
Code: e2 01 48 ff ca 48 09 c2 48 21 ca 0f b6 42 33 c1 e0 18 3d 00 00 00 f5 49 0f 45 d5 4c 8b 62 08 49 8b 2f 49 63 84 24 b8 00 00 00 <49> 29 c7 4c 89 e7 4c 89 fe e8 5b e4 ff ff 66 90 48 8d 15 00 00 00
RSP: 0018:ffffc90003157750 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90003157788 RCX: ffffea0000ef2500
RDX: ffffea0000ef2400 RSI: ffffffff8e2313f0 RDI: ffff88803bc94000
RBP: ffff8880212d7f00 R08: ffffffff9057a737 R09: 1ffffffff20af4e6
R10: dffffc0000000000 R11: fffffbfff20af4e7 R12: ffff88801b005140
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88803bc94000
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:4584 [inline]
slab_alloc_node mm/slub.c:4917 [inline]
kmem_cache_alloc_node_noprof+0x355/0x610 mm/slub.c:4989
__alloc_skb+0x1d7/0x7a0 net/core/skbuff.c:704
netlink_sendmsg+0x5d4/0xb40 net/netlink/af_netlink.c:1875
sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775
__sock_sendmsg net/socket.c:790 [inline]
____sys_sendmsg+0x54e/0x850 net/socket.c:2684
___sys_sendmsg+0x2a5/0x360 net/socket.c:2738
__sys_sendmsg net/socket.c:2770 [inline]
__do_sys_sendmsg net/socket.c:2775 [inline]
__se_sys_sendmsg net/socket.c:2773 [inline]
__x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2773
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f839dea7407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffce02c4190 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f839e662880 RCX: 00007f839dea7407
RDX: 0000000000000000 RSI: 00007ffce02c41f0 RDI: 0000000000000004
RBP: 000056343dc1bba0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000000b3
R13: 000056343dbf79e0 R14: 0000000000000000 R15: 0000000000000000