[squid-users] FATAL: Dying from an exception handling failure; exception: [no active exception]

[Waldemar Brodkorb]

Hi Alex,
Alex Rousskov wrote,

> On 7/28/23 05:05, Waldemar Brodkorb wrote:
> 
> > we recently updated our proxies to 6.1 on Ubuntu 22.04 (x86_64) and
> > now seeing sometime following fatal errors in the cache.log:
> > 
> > FATAL: Dying from an exception handling failure; exception: [no
> > active exception]
> > 
> > What does it mean and how can I further analyze the problem?
> 
> It means your Squid hit a bug and quit.
> 
> * If you configure your environment to allow Squid to dump its core, the
> crash should leave a core file that you can analyze with a debugger. Please
> be mindful of Ubuntu's apport attempts to "help" you.
> 
> * Alternatively, you can start Squid from the debugger, but that usually
> requires more work/hacks. See Ralf's response for helpful hints.
>  There is one known Squid v6+ bug with the same symptom. If your debugger
> backtrace shows functions with letters "Ftp" in their names, then you are
> probably hitting that bug. That bug has a proposed fix. If you can, please
> test it: https://bugs.squid-cache.org/show_bug.cgi?id=5290#c2

I tested this patch and it fixes my crash.
After your hint about Ftp issues, I could regenerate the crash just
by visiting ftp://ftp.gwdg.de via internet explorer.

Thanks for the patch and fast replies,
 best regards
  Waldemar