Messages in this thread | | | From | Rob Herring <> | Date | Fri, 7 Apr 2017 09:03:28 -0500 | Subject | Re: tty crash in tty_ldisc_receive_buf() |
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On Thu, Apr 6, 2017 at 8:03 PM, Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote: > On Thu, 2017-04-06 at 08:28 -0500, Rob Herring wrote: >> >> Can you try this one [1]. >> >> Rob >> >> [1] https://lkml.org/lkml/2017/3/23/569 > > Unless I missed something, that patch doesn't change barriers or > locking, so I don't see how it could fix anything ...
Only because that's a code path that I changed recently and the locking and ordering appears to be tricky.
> Mind you we haven't quite figured out exactly what's happening here.
Is this with a serial port? There were some changes to serial_core close in 4.9.
Rob
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