[ 27.541620][ T255] ip (255) used greatest stack depth: 23008 bytes left [ 35.098301][ C0] BUG: spinlock bad magic on CPU#0, tc/322 [ 35.098497][ C0] lock: noop_qdisc+0x240/0x300, .magic: 00000000, .owner: tc/322, .owner_cpu: 0 [ 35.098732][ C0] CPU: 0 UID: 0 PID: 322 Comm: tc Not tainted 6.10.0-virtme #1 [ 35.098929][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 35.099244][ C0] Call Trace: [ 35.099352][ C0] [ 35.099425][ C0] dump_stack_lvl+0xb0/0xd0 [ 35.099574][ C0] do_raw_spin_unlock+0x1ac/0x220 [ 35.099706][ C0] _raw_spin_unlock+0x23/0x40 [ 35.099847][ C0] net_tx_action+0x402/0x660 [ 35.099984][ C0] handle_softirqs+0x1f9/0x5c0 [ 35.100121][ C0] ? dev_deactivate_many+0x1e2/0x8d0 [ 35.100260][ C0] do_softirq+0x4d/0xa0 [ 35.100359][ C0] [ 35.100428][ C0] [ 35.100493][ C0] __local_bh_enable_ip+0xf6/0x120 [ 35.100629][ C0] dev_deactivate_many+0x1e7/0x8d0 [ 35.100759][ C0] ? __pfx___lock_release+0x10/0x10 [ 35.100895][ C0] dev_deactivate+0xc1/0x1b0 [ 35.101027][ C0] ? __pfx_dev_deactivate+0x10/0x10 [ 35.101170][ C0] qdisc_graft+0xb48/0x1110 [ 35.101310][ C0] ? qdisc_create+0x4cc/0xc90 [ 35.101440][ C0] ? __pfx_qdisc_graft+0x10/0x10 [ 35.101575][ C0] ? __pfx_qdisc_create+0x10/0x10 [ 35.101707][ C0] tc_modify_qdisc+0x95a/0x1490 [ 35.101841][ C0] ? trace_contention_end+0xeb/0x150 [ 35.101976][ C0] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 35.102120][ C0] ? __mutex_lock+0x170/0xac0 [ 35.102254][ C0] ? trace_lock_acquire+0x14d/0x1f0 [ 35.102383][ C0] rtnetlink_rcv_msg+0x2fb/0xc10 [ 35.102517][ C0] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 35.102649][ C0] ? hlock_class+0x4e/0x130 [ 35.102782][ C0] ? mark_lock+0x38/0x3e0 [ 35.102880][ C0] ? __lock_acquire+0xb35/0x1560 [ 35.103017][ C0] netlink_rcv_skb+0x130/0x360 [ 35.103166][ C0] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 35.103304][ C0] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 35.103438][ C0] ? netlink_deliver_tap+0x13e/0x340 [ 35.103572][ C0] ? netlink_deliver_tap+0xc3/0x340 [ 35.103705][ C0] netlink_unicast+0x44b/0x710 [ 35.103840][ C0] ? __pfx_netlink_unicast+0x10/0x10 [ 35.103971][ C0] ? find_held_lock+0x2c/0x110 [ 35.104115][ C0] netlink_sendmsg+0x723/0xbe0 [ 35.104250][ C0] ? __pfx_netlink_sendmsg+0x10/0x10 [ 35.104376][ C0] ? __might_fault+0xc3/0x170 [ 35.104511][ C0] ? __import_iovec+0x35d/0x5d0 [ 35.104650][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 35.104781][ C0] ? __pfx_____sys_sendmsg+0x10/0x10 [ 35.104910][ C0] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 35.105075][ C0] ___sys_sendmsg+0xee/0x170 [ 35.105216][ C0] ? __pfx____sys_sendmsg+0x10/0x10 [ 35.105374][ C0] ? kfree+0x2d/0x230 [ 35.105486][ C0] ? ___sys_recvmsg+0xe0/0x150 [ 35.105628][ C0] ? __pfx____sys_recvmsg+0x10/0x10 [ 35.105764][ C0] ? reacquire_held_locks+0x22f/0x4f0 [ 35.105900][ C0] ? do_user_addr_fault+0x8fd/0xe30 [ 35.106035][ C0] ? __fget_light+0x53/0x1e0 [ 35.106280][ C0] __sys_sendmsg+0xcd/0x170 [ 35.106415][ C0] ? __pfx___sys_sendmsg+0x10/0x10 [ 35.106545][ C0] ? __pfx___up_read+0x10/0x10 [ 35.106679][ C0] do_syscall_64+0xc1/0x1d0 [ 35.106812][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 35.106975][ C0] RIP: 0033:0x7f54bbde67b7 [ 35.107127][ C0] 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 [ 35.107584][ C0] RSP: 002b:00007ffc2b261bd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 35.107780][ C0] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f54bbde67b7 [ 35.107984][ C0] RDX: 0000000000000000 RSI: 00007ffc2b261c40 RDI: 0000000000000005 [ 35.108193][ C0] RBP: 000000000047d6a0 R08: 0000000000000014 R09: 0000000000000000 [ 35.108393][ C0] R10: 00007f54bbc9f708 R11: 0000000000000246 R12: 00007ffc2b271f00 [ 35.108595][ C0] R13: 0000000066ab8275 R14: 00000000004829c0 R15: 00007f54bc079000 [ 35.108794][ C0]