Re: kern/55735: union fs on top of nfs causes kernel panic

[David Holland <dholland-bugs%netbsd.org@localhost>]

The following reply was made to PR kern/55735; it has been noted by GNATS.

From: David Holland <dholland-bugs%netbsd.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/55735: union fs on top of nfs causes kernel panic
Date: Sun, 30 May 2021 07:09:29 +0000

 On Mon, Oct 19, 2020 at 01:00:01PM +0000, bernd.sieker%posteo.net@localhost wrote:
  > A custom-built 9.1 kernel, including zfs (module), union and nfs
  > file systems occasionally panics when a union filesystem is mounted
  > on top of an nfs-mounted filesystem.
 
 so... unfortunately panics from onionfs are not exactly unexpected,
 though this one seems a bit odd.
 
  > [ 13176.105223] alltraps() at netbsd:alltraps+0xbb
  > [ 13176.105223] nfs_request() at netbsd:nfs_request+0x18d
 
 Do you have debug info? If you can figure out which line of
 nfs_request() that is, it would be helpful, as nfs_request() is about
 450 lines of fairly messy code.
 
 -- 
 David A. Holland
 dholland%netbsd.org@localhost