GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog
ip6_tunnel: ip6gre1 xmit: Local address not yet configured!
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: 0-...!: (1 GPs behind) idle=45ac/1/0x4000000000000000 softirq=60874/60889 fqs=8
rcu: (detected by 1, t=10502 jiffies, g=67109, q=908 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 14452 Comm: syz.3.2012 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:658 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:1264 [inline]
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:23 [inline]
RIP: 0010:lock_acquire+0x47/0x350 kernel/locking/lockdep.c:5905
Code: 24 04 41 89 f6 49 89 fc 65 48 8b 05 1b e5 1b 13 48 89 44 24 50 0f 1f 44 00 00 65 8b 05 1a e5 1b 13 83 f8 08 0f 83 9b 01 00 00 <89> c0 48 0f a3 05 87 56 f9 0f 73 0d e8 98 58 09 00 84 c0 0f 84 e2
RSP: 0018:ffffc90000007c58 EFLAGS: 00000093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9bf473d8
RBP: ffffffff9bf473b8 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90000007d20 R11: fffff52000000fa6 R12: ffffffff9bf473d8
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
FS: 00007f2d979e76c0(0000) GS:ffff888123620000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f590eb5da08 CR3: 000000004095e000 CR4: 00000000003526f0
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:155 [inline]
_raw_spin_lock_irqsave+0x40/0x60 kernel/locking/spinlock.c:181
debug_object_activate+0xb7/0x420 lib/debugobjects.c:873
debug_hrtimer_activate kernel/time/hrtimer.c:486 [inline]
debug_activate kernel/time/hrtimer.c:529 [inline]
enqueue_hrtimer+0xa9/0x2c0 kernel/time/hrtimer.c:1137
__run_hrtimer kernel/time/hrtimer.c:2091 [inline]
__hrtimer_run_queues+0x4ce/0xa10 kernel/time/hrtimer.c:2132
hrtimer_interrupt+0x4cd/0xaa0 kernel/time/hrtimer.c:2251
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
__sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1068
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:23 [inline]
RIP: 0010:lock_acquire+0x51/0x350 kernel/locking/lockdep.c:5905
Code: 8b 05 1b e5 1b 13 48 89 44 24 50 0f 1f 44 00 00 65 8b 05 1a e5 1b 13 83 f8 08 0f 83 9b 01 00 00 89 c0 48 0f a3 05 87 56 f9 0f <73> 0d e8 98 58 09 00 84 c0 0f 84 e2 01 00 00 83 3d a9 85 f9 0f 00
RSP: 0018:ffffc90005d265b0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8ff5a320
RBP: 1ffff92000ba4cf0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90005d26798 R11: fffff52000ba4cf5 R12: ffffffff8ff5a320
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
class_rcu_constructor include/linux/rcupdate.h:1216 [inline]
unwind_next_frame+0xac/0x2550 arch/x86/kernel/unwind_orc.c:495
__unwind_start+0x514/0x660 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
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
poison_kmalloc_redzone mm/kasan/common.c:409 [inline]
__kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:426
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5531 [inline]
__kmalloc_noprof+0x366/0x710 mm/slub.c:5556
_kmalloc_noprof include/linux/slab.h:995 [inline]
_kzalloc_noprof include/linux/slab.h:1312 [inline]
kobject_get_path+0xc5/0x2f0 lib/kobject.c:161
kobject_uevent_env+0x29e/0x9e0 lib/kobject_uevent.c:548
netdev_queue_add_kobject net/core/net-sysfs.c:2033 [inline]
netdev_queue_update_kobjects+0x340/0x6b0 net/core/net-sysfs.c:2076
register_queue_kobjects net/core/net-sysfs.c:2139 [inline]
netdev_register_kobject+0x277/0x350 net/core/net-sysfs.c:2385
register_netdevice+0x17be/0x2280 net/core/dev.c:11701
bond_newlink+0x48/0xd0 drivers/net/bonding/bond_netlink.c:625
rtnl_newlink_create+0x305/0x7b0 net/core/rtnetlink.c:4006
__rtnl_newlink net/core/rtnetlink.c:4135 [inline]
rtnl_newlink+0x167a/0x1c30 net/core/rtnetlink.c:4252
rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7169
netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2584
netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
netlink_unicast+0x8ef/0xa80 net/netlink/af_netlink.c:1361
netlink_sendmsg+0x7f0/0xb20 net/netlink/af_netlink.c:1920
sock_sendmsg_nosec+0x14e/0x190 net/socket.c:800
__sock_sendmsg net/socket.c:818 [inline]
____sys_sendmsg+0x54e/0x850 net/socket.c:2715
___sys_sendmsg+0x2a5/0x360 net/socket.c:2769
__sys_sendmsg net/socket.c:2801 [inline]
__do_sys_sendmsg net/socket.c:2806 [inline]
__se_sys_sendmsg net/socket.c:2804 [inline]
__x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2804
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: 0033:0x7f2d96b9f559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2d979e7028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f2d96e25fa0 RCX: 00007f2d96b9f559
RDX: 0000000000000000 RSI: 0000200000000080 RDI: 0000000000000004
RBP: 00007f2d96c36b50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2d96e26038 R14: 00007f2d96e25fa0 R15: 00007fff6305ed58
rcu: rcu_preempt kthread starved for 10486 jiffies! g67109 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:27696 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5830 kernel/sched/core.c:7382
__schedule_loop kernel/sched/core.c:7459 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7474
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x1230 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9c/0x340 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:
CPU: 1 UID: 0 PID: 5632 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:csd_lock_wait kernel/smp.c:389 [inline]
RIP: 0010:smp_call_function_many_cond+0x1132/0x1500 kernel/smp.c:1028
Code: 78 44 8b 2b 44 89 ee 83 e6 01 31 ff e8 17 6f 0c 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 f2 69 0c 00 eb 35 f3 90 <43> 0f b6 04 2c 84 c0 75 0f f7 03 01 00 00 00 74 1d e8 d8 69 0c 00
RSP: 0000:ffffc90003bcf720 EFLAGS: 00000293
RAX: ffffffff81bcabf8 RBX: ffff8880b8244028 RCX: ffff888079f63e80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003bcf870 R08: ffffffff919d71bf R09: 1ffffffff233ae37
R10: dffffc0000000000 R11: fffffbfff233ae38 R12: 1ffff11017048805
R13: dffffc0000000000 R14: 1ffff1100f3eca83 R15: 0000000000000000
FS: 0000555574e15500(0000) GS:ffff888123720000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff7ff886d58 CR3: 0000000079d76000 CR4: 00000000003526f0
Call Trace:
__flush_tlb_multi arch/x86/include/asm/paravirt.h:46 [inline]
flush_tlb_multi arch/x86/mm/tlb.c:1361 [inline]
flush_tlb_mm_range+0x910/0x10b0 arch/x86/mm/tlb.c:1435
flush_tlb_page arch/x86/include/asm/tlbflush.h:352 [inline]
ptep_clear_flush+0x120/0x170 mm/pgtable-generic.c:116
wp_page_copy mm/memory.c:4136 [inline]
do_wp_page+0x3c3a/0x4b60 mm/memory.c:4535
handle_pte_fault mm/memory.c:6651 [inline]
__handle_mm_fault mm/memory.c:6776 [inline]
handle_mm_fault+0x15d7/0x3750 mm/memory.c:6943
do_user_addr_fault+0xb35/0x1480 arch/x86/mm/fault.c:1343
handle_page_fault arch/x86/mm/fault.c:1483 [inline]
exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f7f48f640e0
Code: 5d 29 00 48 8d 0c 1e 49 39 d0 49 89 48 60 0f 95 c2 48 29 d8 0f b6 d2 48 83 c8 01 48 c1 e2 02 48 09 da 48 83 ca 01 48 89 56 08 <48> 89 41 08 48 8d 4e 10 eb b0 48 8d 0d 7f f0 0c 00 ba 9e 10 00 00
RSP: 002b:00007ffdf5973360 EFLAGS: 00010206
RAX: 00000000000065d1 RBX: 0000000000008040 RCX: 0000555574e30a30
RDX: 0000000000008041 RSI: 0000555574e289f0 RDI: 0000000000000004
RBP: 0000000000000802 R08: 00007f7f491f9e20 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000008030
R13: 0000000000000000 R14: 00007f7f491f9e80 R15: 0000000000000000