Re: kern/52598 (/proc/self/exe misbehaves if it's on a null mount)

[Frédéric Fauberteau <triaxx%NetBSD.org@localhost>]

The following reply was made to PR kern/52598; it has been noted by GNATS.

From: =?UTF-8?Q?Fr=C3=A9d=C3=A9ric_Fauberteau?= <triaxx%NetBSD.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost, coypu%sdf.org@localhost
Subject: Re: kern/52598 (/proc/self/exe misbehaves if it's on a null mount)
Date: Sun, 19 Jan 2020 21:58:04 +0100

 The following change fix the crash:
 -cvs rdiff -u -r1.442.4.3 -r1.450 src/sys/kern/kern_exec.c
 +cvs rdiff -u -r1.442.4.3 -r1.454 src/sys/kern/kern_exec.c
 
 Before the christos modifications, lang/rust building failed on NetBSD 
 8.0 when done in a chroot environment:
 --- stderr
 thread 'main' panicked at 'failed to get current_exe: /proc/curproc/exe 
 doesn't point to regular file.', 
 src/librustc/session/filesearch.rs:167:23
 
 Now, it builds successfully:
 $ ls -1 /mnt/ccd0/sandbox/nbsd8-hydralisk/pkg/All | grep rust
 rust-1.40.0.tgz
 
 The current status of this PR is 'needs-pullups'. What could we do to 
 close it?
 
 My personal need is to have a 8.0 able to build bulk sets of packages 
 for several 8.0 domU. If theses changes can only be integrated in 8.2, I 
 finally should upgrade all my 8.0 to 8.2. I would to avoid upgrading but 
 if I have to do, I might as well do it to 9.0. So I can continue while 
 waiting with my custom 8.0. Is there a need to add this fix in a future 
 8.X release? In this case, what should I provide to contribute?