[   32.234645][    C1] BUG: spinlock bad magic on CPU#1, tc/272
[   32.234863][    C1]  lock: noop_qdisc+0x240/0x300, .magic: 00000000, .owner: tc/272, .owner_cpu: 1
[   32.235141][    C1] CPU: 1 UID: 0 PID: 272 Comm: tc Not tainted 6.10.0-virtme #1
[   32.235361][    C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   32.235692][    C1] Call Trace:
[   32.235808][    C1]  <IRQ>
[   32.235887][    C1]  dump_stack_lvl+0xb0/0xd0
[   32.236039][    C1]  do_raw_spin_unlock+0x1ac/0x220
[   32.236191][    C1]  _raw_spin_unlock+0x23/0x40
[   32.236337][    C1]  net_tx_action+0x402/0x660
[   32.236485][    C1]  handle_softirqs+0x1f9/0x5c0
[   32.236639][    C1]  ? dev_deactivate_many+0x1e2/0x8d0
[   32.236795][    C1]  do_softirq+0x4d/0xa0
[   32.236903][    C1]  </IRQ>
[   32.236977][    C1]  <TASK>
[   32.237051][    C1]  __local_bh_enable_ip+0xf6/0x120
[   32.237205][    C1]  dev_deactivate_many+0x1e7/0x8d0
[   32.237349][    C1]  ? qdisc_create+0xdf/0xc90
[   32.237496][    C1]  ? __pfx_htb_init+0x10/0x10 [sch_htb]
[   32.237643][    C1]  dev_deactivate+0xc1/0x1b0
[   32.237792][    C1]  ? __pfx_dev_deactivate+0x10/0x10
[   32.237947][    C1]  qdisc_graft+0xb48/0x1110
[   32.238091][    C1]  ? trace_qdisc_create+0x118/0x190
[   32.238239][    C1]  ? qdisc_create+0x4cc/0xc90
[   32.238385][    C1]  ? __pfx_qdisc_graft+0x10/0x10
[   32.238531][    C1]  ? __pfx_qdisc_create+0x10/0x10
[   32.238674][    C1]  tc_modify_qdisc+0x95a/0x1490
[   32.238822][    C1]  ? trace_contention_end+0xeb/0x150
[   32.238967][    C1]  ? __pfx_tc_modify_qdisc+0x10/0x10
[   32.239118][    C1]  ? __mutex_lock+0x170/0xac0
[   32.239265][    C1]  ? trace_lock_acquire+0x14d/0x1f0
[   32.239414][    C1]  rtnetlink_rcv_msg+0x2fb/0xc10
[   32.239561][    C1]  ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[   32.239705][    C1]  ? hlock_class+0x4e/0x130
[   32.239848][    C1]  ? mark_lock+0x38/0x3e0
[   32.239958][    C1]  ? __lock_acquire+0xb35/0x1560
[   32.240102][    C1]  netlink_rcv_skb+0x130/0x360
[   32.240245][    C1]  ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[   32.240395][    C1]  ? __pfx_netlink_rcv_skb+0x10/0x10
[   32.240540][    C1]  ? netlink_deliver_tap+0x13e/0x340
[   32.240687][    C1]  ? netlink_deliver_tap+0xc3/0x340
[   32.240832][    C1]  netlink_unicast+0x44b/0x710
[   32.240980][    C1]  ? __pfx_netlink_unicast+0x10/0x10
[   32.241130][    C1]  netlink_sendmsg+0x723/0xbe0
[   32.241280][    C1]  ? __pfx_netlink_sendmsg+0x10/0x10
[   32.241435][    C1]  ? __import_iovec+0x35d/0x5d0
[   32.241585][    C1]  ____sys_sendmsg+0x7b2/0xa10
[   32.241730][    C1]  ? __pfx_____sys_sendmsg+0x10/0x10
[   32.241875][    C1]  ? __pfx_copy_msghdr_from_user+0x10/0x10
[   32.242059][    C1]  ___sys_sendmsg+0xee/0x170
[   32.242206][    C1]  ? __pfx____sys_sendmsg+0x10/0x10
[   32.242352][    C1]  ? kfree+0x2d/0x230
[   32.242464][    C1]  ? ___sys_recvmsg+0xe0/0x150
[   32.242611][    C1]  ? __pfx____sys_recvmsg+0x10/0x10
[   32.242755][    C1]  ? reacquire_held_locks+0x22f/0x4f0
[   32.242901][    C1]  ? do_user_addr_fault+0x8fd/0xe30
[   32.243045][    C1]  ? __fget_light+0x53/0x1e0
[   32.243191][    C1]  __sys_sendmsg+0xcd/0x170
[   32.243335][    C1]  ? __pfx___sys_sendmsg+0x10/0x10
[   32.243480][    C1]  ? __pfx___up_read+0x10/0x10
[   32.243628][    C1]  do_syscall_64+0xc1/0x1d0
[   32.243776][    C1]  entry_SYSCALL_64_after_hwframe+0x77/0x7f
[   32.243954][    C1] RIP: 0033:0x7f8ecfa557b7
[   32.244106][    C1] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
[   32.244627][    C1] RSP: 002b:00007ffeb7487238 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   32.244845][    C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8ecfa557b7
[   32.245066][    C1] RDX: 0000000000000000 RSI: 00007ffeb74872a0 RDI: 0000000000000005
[   32.245283][    C1] RBP: 000000000047cc60 R08: 0000000000000014 R09: 0000000000000000
[   32.245499][    C1] R10: 00007f8ecf90e708 R11: 0000000000000246 R12: 00007ffeb7497588
[   32.245718][    C1] R13: 0000000066ab8903 R14: 00000000004829c0 R15: 00007f8ecfce8000
[   32.245941][    C1]  </TASK>
[   32.670701][  T276] u32 classifier
[   32.670899][  T276]     input device check on
[   32.671026][  T276]     Actions configured
[   32.907973][  T278] netem: version 1.3
[   34.362230][  T285] sctp: Hash tables configured (bind 32/56)
[   35.243525][    C3] htb: netem qdisc 10: is non-work-conserving?