[ 2017.827268][ T4914] mpls_gso: MPLS GSO support [ 2018.158731][ T4928] Mirror/redirect action on [ 2018.282806][ C1] [ 2018.282872][ C1] ================================ [ 2018.282964][ C1] WARNING: inconsistent lock state [ 2018.283046][ C1] 7.1.0-rc5-virtme #1 Not tainted [ 2018.283133][ C1] -------------------------------- [ 2018.283213][ C1] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 2018.283315][ C1] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 2018.283413][ C1] ffffffffc08ad7b8 (mirred_list_lock){+.?.}-{3:3}, at: tcf_mirred_release+0x1d/0x2e0 [act_mirred] [ 2018.283574][ C1] {SOFTIRQ-ON-W} state was registered at: [ 2018.283654][ C1] __lock_acquire+0x378/0xc10 [ 2018.283740][ C1] lock_acquire.part.0+0xbc/0x260 [ 2018.283822][ C1] _raw_spin_lock+0x33/0x40 [ 2018.283911][ C1] tcf_mirred_init+0x844/0xd70 [act_mirred] [ 2018.284017][ C1] tcf_action_init_1+0x428/0x6b0 [ 2018.284096][ C1] tcf_action_init+0x3cf/0x890 [ 2018.284182][ C1] tcf_exts_validate_ex+0x411/0x670 [ 2018.284265][ C1] fl_change+0xed4/0x4e77 [cls_flower] [ 2018.284346][ C1] tc_new_tfilter+0x875/0x21e0 [ 2018.284425][ C1] rtnetlink_rcv_msg+0x6fd/0xbd0 [ 2018.284508][ C1] netlink_rcv_skb+0x14e/0x3a0 [ 2018.284588][ C1] netlink_unicast+0x486/0x750 [ 2018.284667][ C1] netlink_sendmsg+0x735/0xc60 [ 2018.284745][ C1] ____sys_sendmsg+0x419/0x850 [ 2018.284834][ C1] ___sys_sendmsg+0x14e/0x1d0 [ 2018.284918][ C1] __sys_sendmsg+0x145/0x1f0 [ 2018.285000][ C1] do_syscall_64+0x117/0x590 [ 2018.285083][ C1] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 2018.285191][ C1] irq event stamp: 100311990 [ 2018.285270][ C1] hardirqs last enabled at (100311990): [] _raw_spin_unlock_irqrestore+0x53/0x80 [ 2018.285430][ C1] hardirqs last disabled at (100311989): [] _raw_spin_lock_irqsave+0x50/0x60 [ 2018.285587][ C1] softirqs last enabled at (100311708): [] handle_softirqs+0x611/0x940 [ 2018.285733][ C1] softirqs last disabled at (100311841): [] __irq_exit_rcu+0x103/0x1c0 [ 2018.285876][ C1] [ 2018.285876][ C1] other info that might help us debug this: [ 2018.285997][ C1] Possible unsafe locking scenario: [ 2018.285997][ C1] [ 2018.286113][ C1] CPU0 [ 2018.286174][ C1] ---- [ 2018.286234][ C1] lock(mirred_list_lock); [ 2018.286321][ C1] [ 2018.286380][ C1] lock(mirred_list_lock); [ 2018.286468][ C1] [ 2018.286468][ C1] *** DEADLOCK *** [ 2018.286468][ C1] [ 2018.286591][ C1] 1 lock held by swapper/1/0: [ 2018.286680][ C1] #0: ffffffffa6b8bc80 (rcu_callback){....}-{0:0}, at: rcu_do_batch+0x389/0x1020 [ 2018.286831][ C1] [ 2018.286831][ C1] stack backtrace: [ 2018.286930][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 7.1.0-rc5-virtme #1 PREEMPT(full) [ 2018.286933][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2018.286935][ C1] Call Trace: [ 2018.286937][ C1] [ 2018.286941][ C1] dump_stack_lvl+0x6f/0xa0 [ 2018.286947][ C1] print_usage_bug.part.0.cold+0xa9/0xb7 [ 2018.286949][ C1] ? filter_irq_stacks+0xd0/0xd0 [ 2018.286953][ C1] mark_lock_irq+0x4e3/0x9c0 [ 2018.286954][ C1] ? sysvec_apic_timer_interrupt+0x9d/0xe0 [ 2018.286956][ C1] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 2018.286958][ C1] ? save_trace+0x68/0x280 [ 2018.286960][ C1] mark_lock+0x1d7/0xa00 [ 2018.286962][ C1] mark_usage+0x42/0x170 [ 2018.286964][ C1] __lock_acquire+0x378/0xc10 [ 2018.286965][ C1] ? rcu_is_watching+0x15/0xd0 [ 2018.286967][ C1] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 2018.286971][ C1] lock_acquire.part.0+0xbc/0x260 [ 2018.286973][ C1] ? tcf_mirred_release+0x1d/0x2e0 [act_mirred] [ 2018.286974][ C1] ? rcu_is_watching+0x15/0xd0 [ 2018.286976][ C1] ? lock_acquire+0x134/0x160 [ 2018.286978][ C1] _raw_spin_lock+0x33/0x40 [ 2018.286979][ C1] ? tcf_mirred_release+0x1d/0x2e0 [act_mirred] [ 2018.286981][ C1] tcf_mirred_release+0x1d/0x2e0 [act_mirred] [ 2018.286982][ C1] tcf_action_rcu_free+0x74/0x1a0 [ 2018.286984][ C1] ? rcu_do_batch+0x2b4/0x1020 [ 2018.286986][ C1] rcu_do_batch+0x2b6/0x1020 [ 2018.286988][ C1] ? trace_rcu_batch_end+0x330/0x330 [ 2018.286990][ C1] ? trace_irq_enable.constprop.0+0x9b/0x180 [ 2018.286992][ C1] ? do_raw_spin_unlock+0x59/0x250 [ 2018.286994][ C1] ? lockdep_hardirqs_on_prepare.part.0+0x9a/0x160 [ 2018.286995][ C1] ? lockdep_hardirqs_on+0x8c/0x130 [ 2018.286996][ C1] ? _raw_spin_unlock_irqrestore+0x53/0x80 [ 2018.286998][ C1] ? _raw_spin_unlock_irqrestore+0x40/0x80 [ 2018.286999][ C1] rcu_core+0x2bf/0x640 [ 2018.287001][ C1] handle_softirqs+0x1d8/0x940 [ 2018.287003][ C1] ? find_held_lock+0x2b/0x80 [ 2018.287004][ C1] ? __lock_release.isra.0+0x6b/0x1a0 [ 2018.287006][ C1] ? _local_bh_enable+0xd0/0xd0 [ 2018.287008][ C1] __irq_exit_rcu+0x103/0x1c0 [ 2018.287009][ C1] irq_exit_rcu+0xe/0x30 [ 2018.287011][ C1] sysvec_apic_timer_interrupt+0x9d/0xe0 [ 2018.287012][ C1] [ 2018.287013][ C1] [ 2018.287013][ C1] ? rcu_is_watching+0x15/0xd0 [ 2018.287015][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 2018.287016][ C1] RIP: 0010:pv_native_safe_halt+0xf/0x10 [ 2018.287018][ C1] Code: 48 8b 3d 44 e3 60 02 e8 1f 00 00 00 48 2b 05 c8 81 9e 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 43 74 14 00 fb f4 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01 [ 2018.287020][ C1] RSP: 0018:ffa0000000147de8 EFLAGS: 00000296 [ 2018.287022][ C1] RAX: 0000000005faa31f RBX: ff11000001b9a340 RCX: ffffffffa30ea8a7 [ 2018.287023][ C1] RDX: ff11000001b9a340 RSI: ffffffffa6093d1a RDI: ffffffffa5a727c0 [ 2018.287024][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 2018.287025][ C1] R10: 0000000000000001 R11: 0000000000000001 R12: 1ff4000000028fc0 [ 2018.287026][ C1] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 [ 2018.287027][ C1] ? cpuidle_idle_call.constprop.0+0x237/0x410 [ 2018.287030][ C1] ? lockdep_hardirqs_on+0x8c/0x130 [ 2018.287032][ C1] default_idle+0x9/0x10 [ 2018.287033][ C1] default_idle_call+0x6e/0xb0 [ 2018.287035][ C1] cpuidle_idle_call.constprop.0+0x237/0x410 [ 2018.287036][ C1] ? arch_cpu_idle_exit+0x40/0x40 [ 2018.287038][ C1] ? mark_tsc_async_resets+0x30/0x30 [ 2018.287040][ C1] ? rcu_is_watching+0x15/0xd0 [ 2018.287042][ C1] do_idle+0xf5/0x160 [ 2018.287044][ C1] cpu_startup_entry+0x53/0x70 [ 2018.287045][ C1] start_secondary+0x204/0x2b0 [ 2018.287047][ C1] ? set_cpu_sibling_map+0x1fb0/0x1fb0 [ 2018.287049][ C1] common_startup_64+0x13e/0x148 [ 2018.287053][ C1]