>-----Original Message----- >From: Jakub Kicinski <k...@kernel.org> >Sent: Tuesday, November 3, 2020 6:31 PM >To: Vladimir Oltean <olte...@gmail.com> >Cc: Claudiu Manoil <claudiu.man...@nxp.com>; netdev@vger.kernel.org; >David S . Miller <da...@davemloft.net>; james.jur...@ametek.com >Subject: Re: [PATCH net v2 1/2] gianfar: Replace skb_realloc_headroom with >skb_cow_head for PTP > >On Tue, 3 Nov 2020 18:13:19 +0200 Vladimir Oltean wrote: >> [14538.046926] PC is at skb_release_data+0x6c/0x14c >> [14538.051518] LR is at consume_skb+0x38/0xd8 >> [14538.055588] pc : [<c10e439c>] lr : [<c10e3fac>] psr: 200f0013 >> [14538.061817] sp : c28f1da8 ip : 00000000 fp : c265aa40 >> [14538.067010] r10: 00000000 r9 : 00000000 r8 : c2f98000 >> [14538.072204] r7 : c511d900 r6 : c3d3d900 r5 : c3d3d900 r4 : 00000000 >> [14538.078693] r3 : 000000d3 r2 : 00000001 r1 : 00000000 r0 : 00000000 > >> [14538.263039] [<c10e439c>] (skb_release_data) from [<c10e3fac>] >(consume_skb+0x38/0xd8) >> [14538.270834] [<c10e3fac>] (consume_skb) from [<c0d529bc>] >(gfar_start_xmit+0x704/0x784) >> [14538.278714] [<c0d529bc>] (gfar_start_xmit) from [<c10fcdf8>] >(dev_hard_start_xmit+0xfc/0x254) >> [14538.287198] [<c10fcdf8>] (dev_hard_start_xmit) from [<c1158524>] >(sch_direct_xmit+0x104/0x2e0) > >Looks like one of the error paths freeing a wonky skb. > >Could you decode these addresses to line numbers?
It's either the dev_kfree_skb_any from the dma mapping error path or the one from skb_cow_head()'s error path. A confirmation would help indeed.
