netdev - Re: [PATCH net v3] cadence: force nonlinear buffers to be cloned

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Date:   Sun, 01 Nov 2020 00:20:04 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Mark Deneen <mdeneen@...contech.com>
Cc:     netdev@...r.kernel.org, nicolas.ferre@...rochip.com,
        claudiu.beznea@...rochip.com, krnl@...h.eu
Subject: Re: [PATCH net v3] cadence: force nonlinear buffers to be cloned

Hello:

This patch was applied to netdev/net.git (refs/heads/master):

On Fri, 30 Oct 2020 15:58:14 +0000 you wrote:
> In my test setup, I had a SAMA5D27 device configured with ip forwarding, and
> second device with usb ethernet (r8152) sending ICMP packets.  If the packet
> was larger than about 220 bytes, the SAMA5 device would "oops" with the
> following trace:
> 
> kernel BUG at net/core/skbuff.c:1863!
> Internal error: Oops - BUG: 0 [#1] ARM
> Modules linked in: xt_MASQUERADE ppp_async ppp_generic slhc iptable_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 can_raw can bridge stp llc ipt_REJECT nf_reject_ipv4 sd_mod cdc_ether usbnet usb_storage r8152 scsi_mod mii o
> ption usb_wwan usbserial micrel macb at91_sama5d2_adc phylink gpio_sama5d2_piobu m_can_platform m_can industrialio_triggered_buffer kfifo_buf of_mdio can_dev fixed_phy sdhci_of_at91 sdhci_pltfm libphy sdhci mmc_core ohci_at91 ehci_atmel o
> hci_hcd iio_rescale industrialio sch_fq_codel spidev prox2_hal(O)
> CPU: 0 PID: 0 Comm: swapper Tainted: G           O      5.9.1-prox2+ #1
> Hardware name: Atmel SAMA5
> PC is at skb_put+0x3c/0x50
> LR is at macb_start_xmit+0x134/0xad0 [macb]
> pc : [<c05258cc>]    lr : [<bf0ea5b8>]    psr: 20070113
> sp : c0d01a60  ip : c07232c0  fp : c4250000
> r10: c0d03cc8  r9 : 00000000  r8 : c0d038c0
> r7 : 00000000  r6 : 00000008  r5 : c59b66c0  r4 : 0000002a
> r3 : 8f659eff  r2 : c59e9eea  r1 : 00000001  r0 : c59b66c0
> Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
> Control: 10c53c7d  Table: 2640c059  DAC: 00000051
> Process swapper (pid: 0, stack limit = 0x75002d81)
> 
> [...]

Here is the summary with links:
  - [net,v3] cadence: force nonlinear buffers to be cloned
    https://git.kernel.org/netdev/net/c/403dc16796f5

You are awesome, thank you!
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