On 08/29/2018 04:42 AM, Nathaniel Munk wrote:
> Hi all,
> I'm running Arch Linux on kernel 4.18.5 (same issue on both arch-provided
> kernel and mainline built-from-source). There is an issue whereby the kernel
> crashes when transferring at high bandwidths (approx 6mB/s) over a specific
> wifi connection. I can only reproduce the issue when using the Personal
> Hotspot on my iPhone 6S+, but can reproduce it very consistently on that
> connection.
>
> More often than not, any download reaching this speed will cause a panic, but
> if the download is immediately terminated at the first error the system can
> recover (and doing this I have obtained the attached logs). Unfortunately, I
> have not had access to a second machine to obtain the netconsole printout of
> the panic.
>
> As above, high-bandwidth transfers on other wifi networks do not cause the
> issue (nor on ethernet connections).
>
> As you can see from the attached log, the issue appears at tcp_recvmsg+0x579
> and net_tx_action+0x1fe. At both these positions (net/ipv4/tcp.c:2000 and
> net/core/dev.c:4279 in mainline 4.18.5), a member of the skb struct is called.
>
> Thank you for your time (and I apologize if this is spurious or badly worded,
> this is my first bug report), and please don't hesitate to let me know if
> there's anything else I can do to help work this out.
>
> Regards,
> -------------------
> Nathaniel Munk
> nathan...@munk.com.au
>
Unfortunately there is no attached log ;)
