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Date:      Tue, 26 Jan 2016 18:51:59 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-threads@FreeBSD.org
Subject:   [Bug 204426] Processes terminating cannot access memory
Message-ID:  <bug-204426-16-7NYF1Q04Gm@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-204426-16@https.bugs.freebsd.org/bugzilla/>
References:  <bug-204426-16@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D204426

--- Comment #11 from rblayzor@inoc.net ---
Since we're using a FreeBSD diskless boot and NFS_ROOT I normally buildworld
(and kernel) from sources and install in a new NFS_ROOT path, then boot the
diskless servers with the new root path.

Before booting however, I will also force rebuild (portupgrade -af) everyth=
ing
against the new version of FreeBSD (kernel/userland, libs, etc). So the
binaries that are crashing *are* being rebuilt under FreeBSD 10.2.

We never experienced this in 10.1 and in fact, we even rolled back and boot=
ed
one of the diskless servers using an old NFS_ROOT path with 10.1 (same vers=
ions
of Exim and Dovecot) and those have not crashed. Usually I will experience
these types of seg faults on every VM server at least once a week. (current=
ly
these servers are lightly loaded because of this issue).

Normally I would have no problem believing this is an application but since=
 it
does not appear to happen on 10.1 and only on 10.2, coupled with the fact I=
'm
seeing similar crashes on two different applications that were otherwise
running fine is very suspect.=20

The applications are compiled with debugging symbols, but the crash always
happens in a system library. I've contacted both Dovecot and Exim teams on
these crashes and both agreed that it seemed to be some type of system libr=
ary
issue.

I'm not ruling out that it may be something with our install, but it's fair=
ly
straight forward FreeBSD diskless install. Running out of places to look.

--=20
You are receiving this mail because:
You are the assignee for the bug.=



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