rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=19d/1/0x4000000000000000 softirq=98325/98326 fqs=4892 
	(t=10500 jiffies g=145573 q=790)
NMI backtrace for cpu 1
CPU: 1 PID: 27697 Comm: syz-executor.3 Not tainted 5.15.116-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:343
 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
 rcu_pending kernel/rcu/tree.c:3888 [inline]
 rcu_sched_clock_irq+0xf26/0x1770 kernel/rcu/tree.c:2606
 update_process_times+0x196/0x200 kernel/time/timer.c:1788
 tick_sched_handle kernel/time/tick-sched.c:226 [inline]
 tick_sched_timer+0x22d/0x3c0 kernel/time/tick-sched.c:1430
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
 __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__list_del_entry include/linux/list.h:135 [inline]
RIP: 0010:list_move_tail include/linux/list.h:227 [inline]
RIP: 0010:fq_pie_qdisc_dequeue+0x350/0xa90 net/sched/sch_fq_pie.c:248
Code: 00 41 89 6e f0 4c 89 f7 e8 ad 9f a1 fb 84 c0 4c 8b 64 24 38 0f 84 9b 00 00 00 e8 ab d3 16 f9 49 8d 7e 08 48 89 f8 48 c1 e8 03 <80> 3c 18 00 74 05 e8 b5 2e 60 f9 49 8b 6e 08 4c 89 f0 48 c1 e8 03
RSP: 0018:ffffc90000dd03d0 EFLAGS: 00000a06
RAX: 1ffff11006084c9f RBX: dffffc0000000000 RCX: ffff88801e52d940
RDX: 0000000000000502 RSI: 0000000000000000 RDI: ffff8880304264f8
RBP: 0000000000000000 R08: ffffffff88692394 R09: ffffffff8851a5b8
R10: 0000000000000002 R11: ffff88801e52d940 R12: ffff88807906b2f0
R13: ffff88807906b000 R14: ffff8880304264f0 R15: ffff88807906b2e8
 dequeue_skb net/sched/sch_generic.c:292 [inline]
 qdisc_restart net/sched/sch_generic.c:397 [inline]
 __qdisc_run+0x253/0x1e90 net/sched/sch_generic.c:415
 __dev_xmit_skb net/core/dev.c:3879 [inline]
 __dev_queue_xmit+0xf0a/0x3230 net/core/dev.c:4190
 neigh_output include/net/neighbour.h:516 [inline]
 ip6_finish_output2+0xee4/0x14f0 net/ipv6/ip6_output.c:126
 dst_output include/net/dst.h:449 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 ndisc_send_skb+0xae0/0x13c0 net/ipv6/ndisc.c:508
 addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3932
 call_timer_fn+0x16d/0x560 kernel/time/timer.c:1421
 expire_timers kernel/time/timer.c:1466 [inline]
 __run_timers+0x67c/0x890 kernel/time/timer.c:1737
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1750
 __do_softirq+0x3b3/0x93a kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x155/0x240 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 31 9f f6 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 2e 4a 3e f7 48 89 df e8 c6 9c 3f f7 e8 c1 20 62 f7 fb bf 01 00 00 00 <e8> 46 da 32 f7 65 8b 05 47 26 de 75 85 c0 74 02 5b c3 e8 54 3d dc
RSP: 0018:ffffc9000411f3b8 EFLAGS: 00000286
RAX: 56844fc769e96700 RBX: ffff88801bdbe158 RCX: ffffffff8162db08
RDX: dffffc0000000000 RSI: ffffffff8a8afc60 RDI: 0000000000000001
RBP: ffff888062e73860 R08: dffffc0000000000 R09: fffffbfff1f79663
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88801bf2d6a8 R14: ffff888062e73860 R15: ffff888062e73868
 spin_unlock_irq include/linux/spinlock.h:413 [inline]
 loop_queue_work drivers/block/loop.c:1068 [inline]
 loop_queue_rq+0x9f7/0xae0 drivers/block/loop.c:2201
 __blk_mq_issue_directly block/blk-mq.c:1992 [inline]
 __blk_mq_try_issue_directly+0x541/0x8b0 block/blk-mq.c:2048
 blk_mq_try_issue_directly+0x116/0x370 block/blk-mq.c:2079
 blk_mq_submit_bio+0x11bb/0x1c40 block/blk-mq.c:2301
 __submit_bio+0x813/0x850 block/blk-core.c:923
 __submit_bio_noacct_mq block/blk-core.c:1003 [inline]
 submit_bio_noacct+0x955/0xb30 block/blk-core.c:1033
 submit_bio+0x2dd/0x560 block/blk-core.c:1095
 submit_bh fs/buffer.c:3062 [inline]
 __bread_slow fs/buffer.c:1180 [inline]
 __bread_gfp+0x1c2/0x390 fs/buffer.c:1384
 sb_bread include/linux/buffer_head.h:337 [inline]
 sysv_fill_super+0x246/0x790 fs/sysv/super.c:377
 mount_bdev+0x2c9/0x3f0 fs/super.c:1378
 legacy_get_tree+0xeb/0x180 fs/fs_context.c:610
 vfs_get_tree+0x88/0x270 fs/super.c:1508
 do_new_mount+0x28b/0xae0 fs/namespace.c:2994
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f089a25f69a
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f08987cff88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000009e3e RCX: 00007f089a25f69a
RDX: 0000000020000040 RSI: 0000000020009e40 RDI: 00007f08987cffe0
RBP: 00007f08987d0020 R08: 00007f08987d0020 R09: 0000000000000010
R10: 0000000000000010 R11: 0000000000000202 R12: 0000000020000040
R13: 0000000020009e40 R14: 00007f08987cffe0 R15: 0000000020000280
 </TASK>