Re: [PATCH] mm/highmem: VM_BUG_ON() if offset + len > PAGE_SIZE

From: Andrew Morton
Date: Tue Apr 26 2022 - 15:34:32 EST

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On Tue, 26 Apr 2022 21:30:20 +0200 "Fabio M. De Francesco" <fmdefrancesco@xxxxxxxxx> wrote:

> Add VM_BUG_ON() bounds checking to make sure that, if "offset + len>
> PAGE_SIZE", memset() does not corrupt data in adjacent pages.
>

hm, why? To match all the other functions in there?

I suppose that's logical. Or we could just delete all the other
VM_BUG_ON()s. Have any of them proven to be at all useful?

Next message: Zev Weiss: "Re: [PATCH v3 0/6] hwmon: (nct6775) Convert to regmap, add i2c support"
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