Messages in this thread | | | Subject | Re: [PATCH v5 4/6] x86/microcode/AMD: Check microcode container data in the late loader | From | "Maciej S. Szmigiero" <> | Date | Wed, 2 May 2018 02:47:39 +0200 |
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On 01.05.2018 22:03, Borislav Petkov wrote: > On Tue, May 01, 2018 at 06:19:56PM +0200, Maciej S. Szmigiero wrote: >> -EINVAL cast to unsigned int is 4294967274 and this value is also >> a valid count of bytes to skip that this function can return. > > And where exactly in the *old* code do we do that? >
The old code returned this value as a signed int, but then any "patch_size" value (which is u32) above INT_MAX read from a section header wrapped around to a negative pseudo-error code (which likely didn't match any actual error number).
Maciej
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