Re: PR/51254 CVS commit: src/sys/uvm

[Rin Okuyama <rokuyama.rk%gmail.com@localhost>]

The following reply was made to PR kern/51254; it has been noted by GNATS.

From: Rin Okuyama <rokuyama.rk%gmail.com@localhost>
To: "gnats-bugs%NetBSD.org@localhost" <gnats-bugs%NetBSD.org@localhost>,
 Taylor R Campbell <riastradh%NetBSD.org@localhost>
Cc: 
Subject: Re: PR/51254 CVS commit: src/sys/uvm
Date: Mon, 6 Jun 2022 07:21:12 +0900

 Resending... Why gnats hates my message?
 
 -------- Forwarded Message --------
 Subject: Re: PR/51254 CVS commit: src/sys/uvm
 Date: Mon, 6 Jun 2022 00:40:10 +0900
 From: Rin Okuyama <rokuyama.rk%gmail.com@localhost>
 Reply-To: gnats-bugs%netbsd.org@localhost
 To: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost, martin%NetBSD.org@localhost
 CC: uwe%netbsd.org@localhost
 
 Ah, it seems like PMAP_PREFER() changes "hint" unexpectedly.
 Both sh3 and sparc64 (the original target of this PR) have
 PMAP_PREFER().
 
 We had a similar bug before: kern/54395. In this case, non-zero
 "align" caused the KASSERT failure. We fixed the problem by aligning
 "hint" at the beginning of uvm_map():
 
 http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/uvm/uvm_map.c#rev1.365
 
 Thanks,
 rin