rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=ec1c/1/0x4000000000000000 softirq=54944/54945 fqs=5242
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:     7591          0            0
rcu: 	cputime:      209          0        52278   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=54865 q=2034 ncpus=2)
CPU: 0 UID: 0 PID: 15439 Comm: syz.1.4168 Not tainted syzkaller #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:__sanitizer_cov_trace_pc+0x10/0x70
Code: de 5b e9 13 03 62 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 0d b8 ed 79 11 <65> 8b 15 d9 ed 79 11 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75
RSP: 0018:ffffc90007c871e8 EFLAGS: 00000286
RAX: ffffffff89ad4d8e RBX: ffffc90007c87300 RCX: ffff88816b6b0000
RDX: ffffc9002495a000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90007c87370 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000008 R11: 0000000000000002 R12: ffff8881156fb200
R13: ffff88810c2c4a80 R14: dffffc0000000000 R15: ffff8881156fb200
FS:  00007fd3b36566c0(0000) GS:ffff88818dc1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f213ff8 CR3: 0000000109182000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 tcf_classify+0x3e/0x1160
 hfsc_enqueue+0x322/0xf50
 dev_qdisc_enqueue+0x4e/0x260
 __dev_queue_xmit+0x1b45/0x3820
 packet_sendmsg+0x3d95/0x5040
 sock_sendmsg_nosec+0x13a/0x180
 ____sys_sendmsg+0x54e/0x850
 ___sys_sendmsg+0x2a5/0x360
 __x64_sys_sendmsg+0x1b1/0x290
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd3b279ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd3b3656028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fd3b2a15fa0 RCX: 00007fd3b279ce59
RDX: 0000000000000005 RSI: 0000200000000300 RDI: 0000000000000008
RBP: 00007fd3b2832e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd3b2a16038 R14: 00007fd3b2a15fa0 R15: 00007fff03bbb6a8
 </TASK>
