rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=6544/1/0x4000000000000000 softirq=100845/100846 fqs=5185
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:     5293          0            0
rcu: 	cputime:      319          0        52152   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=54873 q=4242 ncpus=2)
CPU: 1 UID: 0 PID: 13151 Comm: syz.0.930 Not tainted 6.16.0-rc5-syzkaller-00159-g47c84997c686-dirty #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+0x13e/0x190
Code: 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 19 03 31 07 48 3b 44 24 08 75 43 <89> d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d e9 7d d5 02 00 cc
RSP: 0018:ffffc90002baf008 EFLAGS: 00000246
RAX: a7df1850daec9200 RBX: 0000000000000001 RCX: a7df1850daec9200
RDX: ffff888022fd9cc0 RSI: ffffffff8db86a24 RDI: ffffffff8be29dc0
RBP: 00000000ffffffff R08: ffff888022fd9cc0 R09: 0000000000000002
R10: 00000000ffffffff R11: 0000000000000002 R12: 0000000000000246
R13: ffff888022fd9cc0 R14: ffffffff8e13f160 R15: 0000000000000002
FS:  00007f2f543a76c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000012c0 CR3: 000000002e26e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 qdisc_lookup_rcu+0x68/0x6d0
 qdisc_tree_reduce_backlog+0x1b2/0x480
 fq_codel_change+0xa96/0xef0
 fq_codel_init+0x355/0x960
 qdisc_create+0x7ac/0xea0
 tc_modify_qdisc+0x1538/0x20e0
 rtnetlink_rcv_msg+0x77c/0xb70
 netlink_rcv_skb+0x208/0x470
 netlink_unicast+0x75c/0x8e0
 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: 0033:0x7f2f5358e929
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:00007f2f543a7038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f2f537b5fa0 RCX: 00007f2f5358e929
RDX: 0000000000000000 RSI: 00002000000012c0 RDI: 0000000000000004
RBP: 00007f2f53610b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2f537b5fa0 R15: 00007ffd998d9c48
 </TASK>
