Re: [exim] 4.95-RC0 - SIGSEGV (maybe attempt to write to imm…

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Autor: Andreas Metzler
Data:  
A: exim-users
Assumpte: Re: [exim] 4.95-RC0 - SIGSEGV (maybe attempt to write to immutable memory) & other oddities
On 2021-07-23 Matthew Frost via Exim-users <exim-usersexim!org> wrote:
> Hello, odd (perhaps) one coming up…


> I'm still diagnosing what might be wrong here, but I wanted to bring
> it to your attention as it's stopped me testing the RC0 (and is hard
> to debug because it takes hours/days to appear).


> Jailed FreeBSD 12.1-RELEASE-p1 - I have no control over the host, just
> the jail. (IPv4 & IPv6).


> Swapping 4.94.2 for 4.95-RC0 seems fine, but after a number of hours
> in paniclog:


> "SIGSEGV (maybe attempt to write to immutable memory)"


[...]
> Open to suggestions on how to meaningfully work out what's going on
> (my gut says something TLS related, but I could be totally wrong - I
> can see FreeBSD mentioned doing a cursory diff of the sources and
> mention in the ChangeLog).


For the archives: There is a very good chance this thread describes what
has since been diagnosed and fixed in
https://bugs.exim.org/show_bug.cgi?id=2886

cu Andreas