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Bug#1041836: libc6 2.36-9+deb12u1 double free abort



Hi,

On 2023-08-10 16:46, Paul Szabo wrote:
> I now tried the idea whether the amount of memory in the machine has a
> relevance to my "inetd: double free detected in tcache 2, abort" issue.
> I tried "mem=8G" and similar as kernel boot parameter; that produced
> more-or-less the expected results for memory shown by "free", but did
> not help to fix the issue. I may try to change physical RAM modules,
> not sure whether have suitable replacements.

If your issue is fully reproducible, I really doubt your issue is linked
to bad memory modules. As you are able to run inetd as a separate
process, I would suggest to run it under gdb to get a backtrace.
Identifying the location of the double free might help to understand the
issue.

Alternatively as the issue seems to be different depending on the CPU,
you might want to play with glibc tunables [1] to disable hardware
capabilities features [2] and disable for instance AVX or SSE optimized
functions.

Anyway as the originally reported issue has been fixed, I am going to
close the bug, however feel free to open a new one for your issue.

Regards
Aurelien

[1] https://www.gnu.org/software/libc/manual/html_node/Tunables.html
[2] https://www.gnu.org/software/libc/manual/html_node/Hardware-Capability-Tunables.html

-- 
Aurelien Jarno                          GPG: 4096R/1DDD8C9B
aurelien@aurel32.net                     http://aurel32.net


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