Re: kern/59170: bogus reply from NVMM for invalid CPUID on AMD CPU

["Takashi YAMAMOTO via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR kern/59170; it has been noted by GNATS.

From: Takashi YAMAMOTO <yamt9999%gmail.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/59170: bogus reply from NVMM for invalid CPUID on AMD CPU
Date: Tue, 5 May 2026 09:16:38 +0900

 this PR seems invalid.
 the cause of panic is a bug in the provided code,
 which checks wrong value for the existence of the leaf:
 
 > +       if (ci->ci_max_ext_cpuid < 0x40000010)
 > +               return 0;