Hi Laurent
> I don't think this fully fixes the problem, as the rcar_dmac_isr_error() IRQ
> handler is still registered before all this. Furthermore, at least some of
> the
> initialization at the end of rcar_dmac_chan_probe() has to be moved before
> the
> rcar_dmac_isr_channel() IRQ
Hi Laurent
> I don't think this fully fixes the problem, as the rcar_dmac_isr_error() IRQ
> handler is still registered before all this. Furthermore, at least some of
> the
> initialization at the end of rcar_dmac_chan_probe() has to be moved before
> the
> rcar_dmac_isr_channel() IRQ
enesas.com>
> ---
>
> > Anton, Laurent
>
> I created this patch because noone posted it yesterday.
> Anton, you can use this patch and replace Author to you if you want.
> Thus, I used [RFC] on this patch
I don't think you have, the subject line is still "Re: Possi
this patch because noone posted it yesterday.
> Anton, you can use this patch and replace Author to you if you want.
> Thus, I used [RFC] on this patch
I don't think you have, the subject line is still "Re: Possible null pointer
dereference in rcar-dmac.ko" :-)
> drivers/dma
Anton Volkov noticed that engine->dev is NULL before
of_dma_controller_register() in probe.
Thus there might be a NULL pointer dereference in
rcar_dmac_chan_start_xfer while accessing chan->chan.device->dev which
is equal to (>engine)->dev.
To be more safety code, this patch initialize
Anton Volkov noticed that engine->dev is NULL before
of_dma_controller_register() in probe.
Thus there might be a NULL pointer dereference in
rcar_dmac_chan_start_xfer while accessing chan->chan.device->dev which
is equal to (>engine)->dev.
To be more safety code, this patch initialize
Hello,
On Wednesday 09 Aug 2017 00:49:40 Kuninori Morimoto wrote:
> Hi Anton
>
> # add Laurent
>
> > While searching for races in the Linux kernel I've come across
> > "drivers/dma/sh/rcar-dmac.ko" module. Here is a question that I came
> > up with while analyzing results. Lines are given using
Hello,
On Wednesday 09 Aug 2017 00:49:40 Kuninori Morimoto wrote:
> Hi Anton
>
> # add Laurent
>
> > While searching for races in the Linux kernel I've come across
> > "drivers/dma/sh/rcar-dmac.ko" module. Here is a question that I came
> > up with while analyzing results. Lines are given using
Hi Anton
# add Laurent
> While searching for races in the Linux kernel I've come across
> "drivers/dma/sh/rcar-dmac.ko" module. Here is a question that I came
> up with while analyzing results. Lines are given using the info from
> Linux v4.12.
>
> Consider the following case:
>
> Thread 1:
Hi Anton
# add Laurent
> While searching for races in the Linux kernel I've come across
> "drivers/dma/sh/rcar-dmac.ko" module. Here is a question that I came
> up with while analyzing results. Lines are given using the info from
> Linux v4.12.
>
> Consider the following case:
>
> Thread 1:
Hello.
While searching for races in the Linux kernel I've come across
"drivers/dma/sh/rcar-dmac.ko" module. Here is a question that I came up
with while analyzing results. Lines are given using the info from Linux
v4.12.
Consider the following case:
Thread 1:
Hello.
While searching for races in the Linux kernel I've come across
"drivers/dma/sh/rcar-dmac.ko" module. Here is a question that I came up
with while analyzing results. Lines are given using the info from Linux
v4.12.
Consider the following case:
Thread 1:
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