Hi3531的板子，请问一下这是出什么问题？板子没有死，但偶尔会出来一次这种信息

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WARNING: at kernel/softirq.c:159 local_bh_enable_ip+0x9c/0xc8()
Modules linked in: hi3531_adec(P) hi3531_aenc(P) hi3531_ao(P) hi3531_ai(P) hi3531_sio(P) hidmac nls_cp936 8188eu nvp6114_ex hi_rtc hi_gpio option usb_wwan gpioi2c jpeg(P) hi3531_hdmi(P) hi3531_vfmw(P) hi3531_vdec(P) hifb(P) vcmp(P) hi3531_vda(P) hi3531_ive(P) hi3531_region(P) hi3531_vpss(P) hi3531_vou(P) hi3531_viu(P) hi3531_mpeg4e(P) hi3531_jpege(P) hi3531_rc(P) hi3531_h264e(P) hi3531_chnl(P) hi3531_group(P) hi3531_venc(P) hi3531_dsu(P) hi3531_tde(P) hi3531_sys(P) hi3531_base(P) hiuser mmz stmmac
Backtrace:
[] (dump_backtrace+0x0/0x110) from [] (dump_stack+0x18/0x1c)
r6:0000009f r5:c0065bbc r4:00000000 r3:c074f2b4
[] (dump_stack+0x0/0x1c) from [] (warn_slowpath_common+0x5c/0x6c)
[] (warn_slowpath_common+0x0/0x6c) from [] (warn_slowpath_null+0x24/0x2c)
r8:825e5602 r7:000002b8 r6:c3021600 r5:ffdf9ae0 r4:c07b40a0
r3:00000009
[] (warn_slowpath_null+0x0/0x2c) from [] (local_bh_enable_ip+0x9c/0xc8)
[] (local_bh_enable_ip+0x0/0xc8) from [] (_raw_spin_unlock_bh+0x28/0x2c)
r4:c3bd3620 r3:00000000
[] (_raw_spin_unlock_bh+0x0/0x2c) from [] (destroy_conntrack+0xd4/0x150)
[] (destroy_conntrack+0x0/0x150) from [] (nf_conntrack_destroy+0x24/0x38)
r4:c3021600 r3:c046fdb8
[] (nf_conntrack_destroy+0x0/0x38) from [] (skb_release_head_state+0xdc/0x10c)
[] (skb_release_head_state+0x0/0x10c) from [] (__kfree_skb+0x14/0xe0)
r4:c3021600 r3:00000001
[] (__kfree_skb+0x0/0xe0) from [] (consume_skb+0x2c/0x58)
r4:c39ad3a0 r3:00000001
[] (consume_skb+0x0/0x58) from [] (stmmac_poll+0x2a0/0xb0c [stmmac])
[] (stmmac_poll+0x0/0xb0c [stmmac]) from [] (net_rx_action+0xec/0x1b8)
[] (net_rx_action+0x0/0x1b8) from [] (__do_softirq+0xc8/0x194)
[] (__do_softirq+0x0/0x194) from [] (irq_exit+0x50/0x54)
[] (irq_exit+0x0/0x54) from [] (asm_do_IRQ+0x64/0xc0)
[] (asm_do_IRQ+0x0/0xc0) from [] (__irq_svc+0x38/0xa0)
Exception stack(0xc0743f40 to 0xc0743f88)
3f40: c0742000 c0742008 c0743f88 00000000 c0742000 c0772ea4 c05e7a2c c074e234
3f60: 8000406a 413fc090 00000000 c0743f94 c0743f98 c0743f88 c0045d14 c0045d18
3f80: 60000013 ffffffff
r7:c074e234 r6:00000077 r5:fe300100 r4:ffffffff
[] (default_idle+0x0/0x30) from [] (cpu_idle+0xac/0xe0)
[] (cpu_idle+0x0/0xe0) from [] (rest_init+0x78/0x7c)
r7:c074e22c r6:00000000 r5:c0036984 r4:c0744348
[] (rest_init+0x0/0x7c) from [] (start_kernel+0x2e8/0x2f4)
[] (start_kernel+0x0/0x2f4) from [<80008040>] (0x80008040)
---[ end trace 91f31eb842e05786 ]---