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Re: [PATCH] brcmfmac: fix a loop exit condition

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On Tue, Jun 15, 2021 at 10:26:56AM +0000, Kalle Valo wrote:
> Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote:
> 
> > This code is supposed to loop over the whole board_type[] string.  The
> > current code kind of works just because ascii values start 97 and the
> > string is likely shorter than that so it will break when we hit the NUL
> > terminator.  But really the condition should be "i < len" instead of
> > "i < board_type[i]".
> > 
> > Fixes: 29e354ebeeec ("brcmfmac: Transform compatible string for FW loading")
> > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> > Reviewed-by: Matthias Brugger <mbrugger@xxxxxxxx>
> 
> There was talk about v2, but I don't see it in the patchwork.
> 

Ah, crap.  I started to debug Smatch to find out why it wasn't warning
about some of these bugs and I got a bit carried away writing Smatch
code and forgot to come back to this.

I will send it tomorrow.

regards,
dan carpenter



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