[ 29.947101][ T256] ip (256) used greatest stack depth: 24160 bytes left [ 37.382412][ C1] BUG: spinlock bad magic on CPU#1, tc/302 [ 37.382630][ C1] lock: noop_qdisc+0x240/0x300, .magic: 00000000, .owner: tc/302, .owner_cpu: 1 [ 37.382893][ C1] CPU: 1 UID: 0 PID: 302 Comm: tc Not tainted 6.10.0-virtme #1 [ 37.383117][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 37.383449][ C1] Call Trace: [ 37.383566][ C1] [ 37.383648][ C1] dump_stack_lvl+0xb0/0xd0 [ 37.383813][ C1] do_raw_spin_unlock+0x1ac/0x220 [ 37.383966][ C1] _raw_spin_unlock+0x23/0x40 [ 37.384121][ C1] net_tx_action+0x402/0x660 [ 37.384273][ C1] handle_softirqs+0x1f9/0x5c0 [ 37.384429][ C1] ? dev_deactivate_many+0x1e2/0x8d0 [ 37.384588][ C1] do_softirq+0x4d/0xa0 [ 37.384698][ C1] [ 37.384775][ C1] [ 37.384850][ C1] __local_bh_enable_ip+0xf6/0x120 [ 37.384995][ C1] dev_deactivate_many+0x1e7/0x8d0 [ 37.385142][ C1] ? qdisc_create+0xdf/0xc90 [ 37.385293][ C1] ? tc_modify_qdisc+0x398/0x1490 [ 37.385444][ C1] ? netlink_rcv_skb+0x130/0x360 [ 37.385599][ C1] dev_deactivate+0xc1/0x1b0 [ 37.385749][ C1] ? __pfx_dev_deactivate+0x10/0x10 [ 37.385897][ C1] ? lockdep_init_map_type+0x2cb/0x7c0 [ 37.386042][ C1] ? __pfx_fifo_init+0x10/0x10 [ 37.386190][ C1] ? lockdep_init_map_type+0x2cb/0x7c0 [ 37.386338][ C1] qdisc_graft+0xb48/0x1110 [ 37.386484][ C1] ? trace_qdisc_create+0x118/0x190 [ 37.386634][ C1] ? qdisc_create+0x4cc/0xc90 [ 37.386787][ C1] ? __pfx_qdisc_graft+0x10/0x10 [ 37.386937][ C1] ? __pfx_qdisc_create+0x10/0x10 [ 37.387081][ C1] ? __nla_validate_parse+0x1bc/0x3d0 [ 37.387227][ C1] tc_modify_qdisc+0x95a/0x1490 [ 37.387374][ C1] ? trace_contention_end+0xeb/0x150 [ 37.387522][ C1] ? __pfx_tc_modify_qdisc+0x10/0x10 [ 37.387666][ C1] ? __mutex_lock+0x170/0xac0 [ 37.387820][ C1] ? trace_lock_acquire+0x14d/0x1f0 [ 37.387972][ C1] rtnetlink_rcv_msg+0x2fb/0xc10 [ 37.388119][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 37.388266][ C1] ? hlock_class+0x4e/0x130 [ 37.388410][ C1] ? mark_lock+0x38/0x3e0 [ 37.388520][ C1] ? __lock_acquire+0xb35/0x1560 [ 37.388671][ C1] netlink_rcv_skb+0x130/0x360 [ 37.388819][ C1] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 37.388966][ C1] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 37.389117][ C1] ? netlink_deliver_tap+0x13e/0x340 [ 37.389262][ C1] ? netlink_deliver_tap+0xc3/0x340 [ 37.389410][ C1] netlink_unicast+0x44b/0x710 [ 37.389554][ C1] ? __pfx_netlink_unicast+0x10/0x10 [ 37.389702][ C1] netlink_sendmsg+0x723/0xbe0 [ 37.389848][ C1] ? __pfx_netlink_sendmsg+0x10/0x10 [ 37.389992][ C1] ? __import_iovec+0x35d/0x5d0 [ 37.390140][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 37.390294][ C1] ? __pfx_____sys_sendmsg+0x10/0x10 [ 37.390438][ C1] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 37.390624][ C1] ___sys_sendmsg+0xee/0x170 [ 37.390771][ C1] ? __pfx____sys_sendmsg+0x10/0x10 [ 37.390915][ C1] ? kfree+0x2d/0x230 [ 37.391025][ C1] ? ___sys_recvmsg+0xe0/0x150 [ 37.391167][ C1] ? __pfx____sys_recvmsg+0x10/0x10 [ 37.391315][ C1] ? reacquire_held_locks+0x22f/0x4f0 [ 37.391462][ C1] ? do_user_addr_fault+0x8fd/0xe30 [ 37.391613][ C1] ? __fget_light+0x53/0x1e0 [ 37.391760][ C1] __sys_sendmsg+0xcd/0x170 [ 37.391907][ C1] ? __pfx___sys_sendmsg+0x10/0x10 [ 37.392053][ C1] ? __pfx___up_read+0x10/0x10 [ 37.392201][ C1] do_syscall_64+0xc1/0x1d0 [ 37.392347][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 37.392533][ C1] RIP: 0033:0x7f6ee7fd47b7 [ 37.392690][ 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 [ 37.393203][ C1] RSP: 002b:00007ffdc709b438 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 37.393423][ C1] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f6ee7fd47b7 [ 37.393644][ C1] RDX: 0000000000000000 RSI: 00007ffdc709b4a0 RDI: 0000000000000005 [ 37.393864][ C1] RBP: 000000000047c620 R08: 0000000000000014 R09: 0000000000000000 [ 37.394082][ C1] R10: 00007f6ee7e8d708 R11: 0000000000000246 R12: 00007ffdc70ab778 [ 37.394299][ C1] R13: 0000000066ab944e R14: 00000000004829c0 R15: 00007f6ee8267000 [ 37.394527][ C1]