Re: [PATCH] proc/vmcore: fix signedness bug in read_from_oldmem()

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On Wed, Jul 26, 2023 at 01:56:29PM +0800, Baoquan He wrote:
> 
> Thanks for this fix. Just curious, this is found out by code exploring,
> or any breaking?

It's from static analysis, looking at when error codes are type promoted
to unsigned.  I pushed the Smatch check for this yesterday.

https://github.com/error27/smatch/commit/a2e6ca07e2ef83a72c9ffa3508af1398a6ecc7ed

regards,
dan carpenter


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