hrtimer: interrupt took 30872812 ns
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (3 ticks this GP) idle=a594/1/0x4000000000000000 softirq=30405/30405 fqs=0
rcu: 	(t=13806 jiffies g=20185 q=447 ncpus=1)
rcu: rcu_preempt kthread timer wakeup didn't happen for 13805 jiffies! g20185 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=11566
rcu: rcu_preempt kthread starved for 13806 jiffies! g20185 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:28904 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x1b88/0x5240 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0x163/0x360 kernel/sched/core.c:6860
 schedule_timeout+0x15b/0x2b0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2e1/0x1340 kernel/rcu/tree.c:2046
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2248
 kthread+0x7b7/0x940 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
CPU: 0 UID: 0 PID: 5427 Comm: syz-executor261 Not tainted 6.15.0-rc2-syzkaller-00257-gb5c6891b2c5b #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:lockdep_unregister_key+0x29a/0x2f0 kernel/locking/lockdep.c:6613
Code: f0 f6 6b 94 48 c7 c6 d0 8b 9e 81 e8 30 bd 09 00 e8 0b c8 09 00 e9 3b fe ff ff e8 b1 06 91 0a f7 c5 00 02 00 00 74 d2 fb 84 db <75> d1 eb e2 90 0f 0b 90 e9 35 ff ff ff 90 0f 0b 90 e9 46 ff ff ff
RSP: 0018:ffffc9000d5a70a8 EFLAGS: 00000246
RAX: e624ba31bec76f00 RBX: 0000000000000000 RCX: 0000000000001b0b
RDX: ffffffff942bf6e8 RSI: ffffffff8e50572d RDI: ffffffff8ca1b5a0
RBP: 0000000000000203 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff93686020
R13: 0000000000001000 R14: ffffffff946bf708 R15: ffff88805146c298
FS:  00005555801ea480(0000) GS:ffff88808c59a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe139f6a440 CR3: 0000000050aee000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1080
 taprio_attach+0x24e/0x390 net/sched/sch_taprio.c:2147
 qdisc_graft+0x133f/0x1670 net/sched/sch_api.c:1175
 __tc_modify_qdisc net/sched/sch_api.c:1765 [inline]
 tc_modify_qdisc+0x1aa3/0x2610 net/sched/sch_api.c:1821
 rtnetlink_rcv_msg+0x7c2/0xd70 net/core/rtnetlink.c:6964
 netlink_rcv_skb+0x208/0x480 net/netlink/af_netlink.c:2534
 netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
 netlink_unicast+0x7f8/0x9a0 net/netlink/af_netlink.c:1339
 netlink_sendmsg+0x8c3/0xcd0 net/netlink/af_netlink.c:1883
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:727
 ____sys_sendmsg+0x523/0x860 net/socket.c:2566
 ___sys_sendmsg net/socket.c:2620 [inline]
 __sys_sendmsg+0x271/0x360 net/socket.c:2652
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1ce48f1899
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 1f 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffced50e4a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f1ce48f1899
RDX: 0000000000000000 RSI: 00002000000007c0 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007f1ce4938049
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1ce4938049
R13: 00007ffced50e4f0 R14: 00007ffced50e530 R15: 0000000000000000
 </TASK>