Hi,
Mathieu Othacehe skribis:
> I'm trying to fix a memory corruption in the remote-server process of
> Cuirass since a few days. Even though I don't have a usable core dump
> file yet, I'm pretty sure the error comes from the "zmq-msg-init"
> procedure of Guile-Simple-ZMQ.
I’m closing this old
Hi,
Mathieu Othacehe skribis:
>> Hmm I think the bytevector and the pointer object can be finalized in
>> the same GC cycle; when that happens, you have no guarantee as to the
>> order in which they are finalized.
>
> That would explain the crashes indeed.
>
>> But… is it really similar to your
Hey,
> Hmm I think the bytevector and the pointer object can be finalized in
> the same GC cycle; when that happens, you have no guarantee as to the
> order in which they are finalized.
That would explain the crashes indeed.
> But… is it really similar to your ZMQ issue? There you had message
Hi!
Mathieu Othacehe skribis:
> I have written a small reproducer of the situation:
>
> (use-modules (system foreign)
> (rnrs bytevectors))
>
> (define close
> (dynamic-func "test_close" (dynamic-link "/home/mathieu/tmp/libtest")))
>
> (let loop ()
> (let* ((bv (make-bytevector
Hey Ludo,
Many thanks for your help here, it feels great to have your support as
always.
> First, is this function idempotent? (Is it OK to close an msg_t
> multiple times.)
The zmq_msg_close function is mostly responsible of freeing the memory
allocated by ZMQ to store the data associated wi
Hi!
Mathieu Othacehe skribis:
> Here's a Valgrind backtrace:
>
> ==97844== Thread 17:
> ==97844== Invalid read of size 4
> ==97844==at 0x114465B9: zmq::msg_t::close() (in
> /gnu/store/zd9lbfqa3170nsfd4177dnr38k1sjbnc-zeromq-4.3.4/lib/libzmq.so.5.2.4)
First, is this function idempotent? (I
Hello zimoun,
> and why is ’zmq-message-content’ used for? Since ’message’ is
> initialized with zero, I guess. Well, I am confused by:
>
> (let ((content-ptr (zmq_msg_data (message->pointer message)))
> [...]
> (pointer->bytevector content-ptr size
>
> …
>
> (let ((msg (
Hey,
Here's a Valgrind backtrace:
--8<---cut here---start->8---
==97844== Thread 17:
==97844== Invalid read of size 4
==97844==at 0x114465B9: zmq::msg_t::close() (in
/gnu/store/zd9lbfqa3170nsfd4177dnr38k1sjbnc-zeromq-4.3.4/lib/libzmq.so.5.2.4)
==97844==
Hi Mathieu,
I know nothing about the topic and I probably out-of-scope.
On Fri, 26 Feb 2021 at 15:14, Mathieu Othacehe wrote:
> I'm trying to fix a memory corruption in the remote-server process of
> Cuirass since a few days. Even though I don't have a usable core dump
> file yet, I'm pretty su
Hello,
I'm trying to fix a memory corruption in the remote-server process of
Cuirass since a few days. Even though I don't have a usable core dump
file yet, I'm pretty sure the error comes from the "zmq-msg-init"
procedure of Guile-Simple-ZMQ.
This procedure creates a bytevector, call the C fun
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