Bug#1031520: maxima: triggers kernel error about memory allocation glitch

Thank you for looking into this and the explanations.

Meanwhile I found the kernel commit which introduced this warning:
https://lkml.kernel.org/lkml/[email protected]/t/

Maybe then, the kernel people are to blame and the bug could be closed.

Regards,
Jörg.

Camm Maguire wrote on 18/02/2023 15:46:
> Greetings, and thanks for your report!
>
> GCL based applications probe brk at runtime to determine an upper bound
> for its permissible heap.  Running under strace -f is usually helpful to
> see if your kernel messages are correlated with this loop.  To my
> understanding, if brk triggers a 'no enough memory for the allocation'
> condition, it should simply return an error code to the user space
> process, and not generate any kernel level difficulties.  brk just
> reserves the memory, and does not actually allocate it until it is
> written, so no oom machinery should be involved.
>
> Take care,
>
> Jörg-Volker Peetz <[email protected]> writes:
>
>> Package: maxima
>> Version: 5.46.0-11
>> Severity: normal
>>
>> Dear Camm Maguire,
>>
>> calling maxima generates a kernel message:
>>
>> kernel: __vm_enough_memory: 1 callbacks suppressed
>> kernel: __vm_enough_memory: pid: 13721, comm: maxima, no enough memory for the
>> allocation
>>
>> The second line appears 10 times. I'm using a self-compiled upstream kernel.
>> Any idea?
>>
>> Regards,
>> Jörg.
>>
>> -- System Information:
>> Debian Release: bookworm/sid
>>    APT prefers testing
>>    APT policy: (600, 'testing'), (500, 'unstable'), (5, 'experimental')
>> Architecture: amd64 (x86_64)
>>
>> Kernel: Linux 6.1.11 (SMP w/16 CPU threads; PREEMPT)
>> Locale: LANG=C.utf8, LC_CTYPE=C.utf8 (charmap=UTF-8), LANGUAGE not set
>> Shell: /bin/sh linked to /usr/bin/dash
>> Init: sysvinit (via /sbin/init)
>>
>> Versions of packages maxima depends on:
>> ii  libc6      2.36-8
>> ii  libedit2   3.1-20221030-2
>> ii  libgmp10   2:6.2.1+dfsg1-1.1
>> ii  libtirpc3  1.3.3+ds-1
>> ii  libx11-6   2:1.8.3-3
>>
>> Versions of packages maxima recommends:
>> ii  gnuplot-qt [gnuplot-x11]  5.4.4+dfsg1-2+b2
>> ii  maxima-share              5.46.0-11
>>
>> Versions of packages maxima suggests:
>> ii  maxima-doc    5.46.0-11
>> ii  maxima-emacs  5.46.0-11
>> pn  texmacs       <none>
>> ii  tk [wish]     8.6.11+1
>> pn  xmaxima       <none>
>>
>> -- no debconf information
>>
>>
>>
>