GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog
GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog
GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10612 jiffies, g=233789, q=1532 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 9439 (4295091210-4295081771), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 9441 jiffies! g233789 f0x2 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:28104 pid:17    tgid:17    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 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
 </TASK>
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: 22022 Comm: kworker/R-bond2 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: bond2 bond_mii_monitor
RIP: 0010:ipv6_find_hdr+0x17e/0x1150 net/ipv6/exthdrs_core.c:202
Code: a8 2e 1a f7 4c 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 84 0e 00 00 66 41 c7 07 00 00 eb 05 e8 87 2e 1a f7 4c 89 7c 24 70 <4c> 89 f0 48 c1 e8 03 48 89 44 24 78 42 0f b6 04 28 84 c0 0f 85 36
RSP: 0018:ffffc90000a187e0 EFLAGS: 00000297
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000a18901
RDX: 8000000000000100 RSI: 0000000000000100 RDI: ffff8881605bd5b8
RBP: ffffc90000a18950 R08: ffffc90000a189a0 R09: 0000000000000002
R10: 000000000000000a R11: 8000000000000100 R12: 1ffff9200014310c
R13: dffffc0000000000 R14: ffffc90000a189b0 R15: ffffc90000a189c0
FS:  0000000000000000(0000) GS:ffff888124dc7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c369b9c CR3: 00000000572de000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 nft_set_pktinfo_ipv6 include/net/netfilter/nf_tables_ipv6.h:15 [inline]
 nft_do_chain_inet+0x139/0x4b0 net/netfilter/nft_chain_filter.c:156
 nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
 nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
 nf_hook include/linux/netfilter.h:280 [inline]
 NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:323
 __netif_receive_skb_one_core net/core/dev.c:6297 [inline]
 __netif_receive_skb net/core/dev.c:6410 [inline]
 process_backlog+0x795/0x18b0 net/core/dev.c:6761
 __napi_poll+0xaa/0x330 net/core/dev.c:7830
 napi_poll net/core/dev.c:7893 [inline]
 net_rx_action+0x61d/0xf50 net/core/dev.c:8050
 handle_softirqs+0x226/0x860 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 invoke_softirq kernel/softirq.c:519 [inline]
 __irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:native_irq_enable arch/x86/include/asm/irqflags.h:-1 [inline]
RIP: 0010:arch_local_irq_enable arch/x86/include/asm/irqflags.h:119 [inline]
RIP: 0010:raw_spin_rq_unlock_irq kernel/sched/sched.h:1698 [inline]
RIP: 0010:__schedule+0x1dc9/0x58f0 kernel/sched/core.c:7289
Code: 31 f6 e8 aa 28 ae f5 4c 89 ff e8 f2 39 af f5 0f 1f 44 00 00 49 83 c7 48 4c 89 ff e8 b1 c3 01 00 e8 9c 61 e8 f5 fb 4c 8b 24 24 <e9> 15 fa ff ff 90 0f 0b 90 f7 c6 01 01 00 00 0f 85 ff e7 ff ff e9
RSP: 0018:ffffc9000506f780 EFLAGS: 00000202
RAX: 000000000023a5f1 RBX: 1ffff92000a0df14 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8e416476 RDI: ffffffff8c6dad80
RBP: ffffc9000506f968 R08: ffffffff907a647f R09: 1ffffffff20f4c8f
R10: dffffc0000000000 R11: fffffbfff20f4c90 R12: ffff888029505dc0
R13: dffffc0000000000 R14: ffff888029505dc0 R15: ffff8880b873bb08
 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/0x910 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__rcu_read_unlock+0x51/0xe0 kernel/rcu/tree_plugin.h:437
Code: 89 dc 49 c1 ec 03 43 0f b6 04 3c 84 c0 75 4f ff 0b 75 1d 4c 8d b7 c8 04 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 38 84 c0 75 66 <41> 83 3e 00 75 27 43 0f b6 04 3c 84 c0 75 41 8b 03 3d 00 00 00 40
RSP: 0018:ffffc9000506fa90 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888029506284 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8e69f4bd RDI: ffff888029505dc0
RBP: ffffc9000506fce0 R08: ffffffff907a647f R09: 1ffffffff20f4c8f
R10: dffffc0000000000 R11: fffffbfff20f4c90 R12: 1ffff110052a0c50
R13: ffffffff818fa5ea R14: ffff888029506288 R15: dffffc0000000000
 rcu_read_unlock include/linux/rcupdate.h:882 [inline]
 process_one_work kernel/workqueue.c:3365 [inline]
 process_scheduled_works+0xad6/0x1630 kernel/workqueue.c:3479
 rescuer_thread+0x7c5/0x10e0 kernel/workqueue.c:3703
 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
 </TASK>
GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog
GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog