rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=375c/1/0x4000000000000000 softirq=25856/25857 fqs=5249
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:     7879          0            0
rcu: 	cputime:      242          0        52256   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=16113 q=1889 ncpus=2)
CPU: 1 UID: 0 PID: 8294 Comm: syz.1.731 Not tainted 6.16.0-rc3-syzkaller-00159-g223e2288f4b8 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:lock_is_held_type+0x137/0x190
Code: 01 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 05 49 43 31 07 <48> 3b 44 24 08 75 43 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc90006d3ef68 EFLAGS: 00000206
RAX: f0b5d89d32d47a00 RBX: 0000000000000001 RCX: f0b5d89d32d47a00
RDX: ffff8881099a0000 RSI: ffffffff8db84532 RDI: ffffffff8be28fc0
RBP: 00000000ffffffff R08: ffff8881099a0000 R09: 0000000000000002
R10: 00000000ffffffff R11: 0000000000000000 R12: 0000000000000246
R13: ffff8881099a0000 R14: ffffffff8e13ee60 R15: 0000000000000002
FS:  00007f90eaa066c0(0000) GS:ffff8881a3c1d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003b00 CR3: 000000010ec88000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 qdisc_lookup_rcu+0x68/0x6d0
 qdisc_tree_reduce_backlog+0x1b2/0x480
 fq_change+0x1519/0x1f50
 fq_init+0x699/0x960
 qdisc_create+0x7ac/0xea0
 tc_modify_qdisc+0x1426/0x2010
 rtnetlink_rcv_msg+0x77c/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x75b/0x8d0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f90e9b8e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f90eaa06038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f90e9db5fa0 RCX: 00007f90e9b8e929
RDX: 0000000000000000 RSI: 0000200000000080 RDI: 000000000000000a
RBP: 00007f90e9c10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f90e9db5fa0 R15: 00007ffee753cba8
 </TASK>
