TITLE: INFO: rcu detected stall in rtnl_newlink
ALT: stall in rtnl_newlink
TYPE: HANG

[  355.572806] INFO: rcu_sched self-detected stall on CPU
[  355.578254] 	0: (104999 ticks this GP) idle=ab9/140000000000001/0 softirq=76582/76582 fqs=34894 
[  355.587151] 	 (t=105000 jiffies g=36307 c=36306 q=2303)
[  355.592663] Task dump for CPU 0:
[  355.596007] syz-executor7   R running task on cpu   0     0 19712   4019 0x0000000c 250568154159
[  355.605206]  0000000000000fb3 00000000ccf50a4a ffff8801daa07bd8 ffffffff816f0dc7
[  355.613296]  ffff8801daa1f7c0 0000000000000000 dffffc0000000000 ffffffff83fca380
[  355.621298]  ffffffff83fca3f4 ffff8801daa07be8 ffffffff816f154c ffff8801daa07c08
[  355.629309] Call Trace:
[  355.631878]  <IRQ>  [<ffffffff816f0dc7>] _sched_show_task+0x31a/0x325
[  355.638595]  [<ffffffff816f154c>] sched_show_task+0x10/0x12
[  355.644287]  [<ffffffff816f16f1>] dump_cpu_task+0x7e/0x83
[  355.649807]  [<ffffffff816faea8>] rcu_dump_cpu_stacks+0x155/0x169
[  355.656012]  [<ffffffff816fb851>] rcu_check_callbacks.cold.76+0x61e/0xc77
[  355.668696]  [<ffffffff814f6faf>] update_process_times+0x3f/0x70
[  355.674817]  [<ffffffff815204ba>] tick_sched_handle.isra.16+0x5a/0x100
[  355.681474]  [<ffffffff81520b6a>] tick_sched_timer+0x7a/0x130
[  355.687337]  [<ffffffff814fa0e5>] __hrtimer_run_queues+0x3a5/0xc50
[  355.725548]  [<ffffffff814fb30e>] hrtimer_interrupt+0x18e/0x400
[  355.731583]  [<ffffffff8129b744>] local_apic_timer_interrupt+0x74/0x90
[  355.738224]  [<ffffffff81012dff>] smp_apic_timer_interrupt+0xdf/0x130
[  355.744785]  [<ffffffff81011c72>] smp_apic_timer_interrupt_entry_after_kaiser_bti+0x20/0x2e
[  355.753246]  <EOI>  [<ffffffff81494f40>] ? check_noncircular+0x20/0x20
[  355.766683]  [<ffffffff815e3567>] is_ftrace_trampoline+0x37/0x120
[  355.772905]  [<ffffffff813a1928>] __kernel_text_address+0x88/0xc0
[  355.779116]  [<ffffffff81245324>] print_context_stack+0x54/0xe0
[  355.785183]  [<ffffffff8124441d>] dump_trace+0x16d/0x320
[  355.790612]  [<ffffffff81265a0b>] save_stack_trace+0x2b/0x50
[  355.796389]  [<ffffffff8183fd43>] save_stack+0x43/0xd0
[  356.049567]  [<ffffffff8183ffd4>] kasan_kmalloc+0xc4/0xe0
[  356.055079]  [<ffffffff81840582>] kasan_slab_alloc+0x12/0x20
[  356.060852]  [<ffffffff8183a96d>] kmem_cache_alloc+0x14d/0x710
[  356.078645]  [<ffffffff81df032e>] ida_pre_get+0x12e/0x2b0
[  356.096113]  [<ffffffff81df0589>] ida_simple_get+0xd9/0x1e0
[  356.117746]  [<ffffffff81a32b67>] __kernfs_new_node+0x97/0x2c0
[  356.123707]  [<ffffffff81a36535>] kernfs_new_node+0x85/0xf0
[  356.129409]  [<ffffffff81a36ec2>] kernfs_create_dir_ns+0x42/0x140
[  356.135620]  [<ffffffff81a3dd23>] sysfs_create_dir_ns+0xc3/0x1d0
[  356.141741]  [<ffffffff81df2be4>] kobject_add_internal+0x284/0x990
[  356.148036]  [<ffffffff81df33d7>] kobject_init_and_add+0xe7/0x140
[  356.160732]  [<ffffffff82af29a4>] netdev_queue_update_kobjects+0xf4/0x2b0
[  356.167638]  [<ffffffff82af2eaf>] netdev_register_kobject+0x22f/0x2f0
[  356.174196]  [<ffffffff82a96121>] register_netdevice+0x7d1/0xf60
[  356.205338]  [<ffffffff82e6da68>] ip_tunnel_newlink+0x378/0x770
[  356.217510]  [<ffffffff82e83a52>] ipgre_newlink+0x102/0x160
[  356.247884]  [<ffffffff82acf8f5>] rtnl_newlink+0x1055/0x15c0
[  356.316833]  [<ffffffff82ad0314>] rtnetlink_rcv_msg+0x4b4/0x700
[  356.353912]  [<ffffffff82c13dc3>] netlink_rcv_skb+0x143/0x370
[  356.365750]  [<ffffffff82ac074f>] rtnetlink_rcv+0x2f/0x40
[  356.371288]  [<ffffffff82c128c7>] netlink_unicast+0x517/0x740
[  356.395498]  [<ffffffff82c132d4>] netlink_sendmsg+0x7e4/0xc90
[  356.420047]  [<ffffffff82a088a8>] sock_sendmsg+0xe8/0x150
[  356.425579]  [<ffffffff82a0c3f0>] ___sys_sendmsg+0x760/0x8b0
[  356.475821]  [<ffffffff82a0f0eb>] __sys_sendmsg+0xdb/0x190
[  356.504375]  [<ffffffff82a0f1d2>] SyS_sendmsg+0x32/0x50
[  356.509728]  [<ffffffff8307ddd3>] entry_SYSCALL_64_fastpath+0x12/0x17
