[hunchentoot-devel] SSL and concurrency crashes Lisp

[Daniel Brunner]

Hi to everybody,

I ran into the following problem with the SSL layer: I start my Lisp
(CCL or SBCL, doesn't matter) and feed it with these lines:

--8<--
(ql:quickload "hunchentoot")

(defparameter *server*
  (hunchentoot:start
   (make-instance 'hunchentoot:ssl-acceptor
		  :port 4711
		  :ssl-certificate-file #P"/home/dbr/local-cert.pem"
		  :ssl-privatekey-file  #P"/home/dbr/local-key.pem")))
--8<--

Then a SSL-ACCEPTOR is running and serving as wished. But when I use
Apache Bench with some concurreny:

> ab -f SSL2 -n 1000 -c 4 https://localhost:4711/

then the Lisp crashes and runs into the debugger. E.g. on CCL/Linux:

--8<--
? Unhandled exception 11 at 0x7f1843f1ebe9, context->regs at #x7f184390f428
Exception occurred while executing foreign code
 at lh_insert + 137
received signal 11; faulting address: 0x7f1843f8fa08
invalid permissions for mapped object
--8<--

Or on SBCL/Linux:

--8<--
CORRUPTION WARNING in SBCL pid 3549(tid 140737314223872):
Memory fault at 0 (pc=0x7ffff4c6f940, sp=0x7ffff59ee280)
The integrity of this image is possibly compromised.
Continuing with fingers crossed.
--8<--

I tested this scenario on different platforms:

Clozure CL (1.7-dev-r14406M-trunk but it crashes on older versions as
well)
 - 32 Bit on Windows Server 2003
 - 64 Bit on Windows Server 2008
 - 32 Bit on Ubuntu 10.04
 - 64 Bit on Ubuntu 10.04 (libssl.0.9.8)

SBCL 1.0.46 64 Bit on Ubuntu 10.04 (libssl.0.9.8)

Used libraries/hunchentoot:
- dists/quicklisp/software/cl+ssl-20101006-cvs/
- dists/quicklisp/software/hunchentoot-1.1.1/



Is this a known problem? Does anybody has an idea how to solve it?


Kind regards, Daniel.