Re: [PATCH v1] regmap-irq: Fix out-of-bounds access when allocating config buffers

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On Tue, Jul 11, 2023 at 08:50:08PM +0100, Mark Brown wrote:
> On Tue, Jul 11, 2023 at 12:30:58PM -0700, Isaac J. Manjarres wrote:
> 
> > [   14.033877][    T1] ==================================================================
> > [   14.042507][    T1] BUG: KASAN: invalid-access in regmap_add_irq_chip_fwnode+0x594/0x1364
> > [   14.050796][    T1] Write of size 8 at addr 06ffff8081021850 by task init/1
> > [   14.057841][    T1] Pointer tag: [06], memory tag: [fe]
> > [   14.063124][    T1]
> > [   14.065349][    T1] CPU: 2 PID: 1 Comm: init Tainted: G        W   E      6.4.0-mainline-g6a4b67fef3e2 #1
> > [   14.075014][    T1] Hardware name: Thundercomm Dragonboard 845c (DT)
> > [   14.081432][    T1] Call trace:
> 
> Please think hard before including complete backtraces in upstream
> reports, they are very large and contain almost no useful information
> relative to their size so often obscure the relevant content in your
> message. If part of the backtrace is usefully illustrative (it often is
> for search engines if nothing else) then it's usually better to pull out
> the relevant sections.

Hi Mark,

Thanks for your feedback. I'll go ahead and send out a new version of
the patch with a trimmed down commit message.

Thanks,
Isaac



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