Re: [scratch/igc] 985247b6bee crash on Linux, KDE, Wayland

[Eval EXEC]

Pip Cet <pipcet@protonmail.com> writes:

> "Eval EXEC" <execvy@gmail.com> writes:
>
>> Eval EXEC <execvy@gmail.com> writes:
>>
>>> I recompiled commit 95a30325a84 (HEAD -> scratch/igc, origin/scratch/igc)
>>> * src/igc.c (fix_frame): Correct the previous change.
>>>
>>> After testing, I believe the issue has been resolved.
>>
>> scratch/igc 95a30325 crash again:
>>
>> I use latest scratch/igc commit: * 95a30325a84 - (HEAD -> scratch/igc, 
>> origin/scratch/igc) * src/igc.c (fix_frame): Fix last change. (8 hours ago) 
>> <Eli Zaretskii>
>>
>> build it by:
>>
>> #!/usr/bin/env bash
>> set -ex
>>
>> make extraclean
>>
>> BRANCH_NAME=$(git branch --show-current | sed 's/\//_/g')
>> COMMIT_ID=$(git rev-parse --short=8 HEAD)
>> BUILD_DIR=${BRANCH_NAME}-commit-${COMMIT_ID}
>> INSTALL_PREFIX=$(realpath ../emacs-build/${BUILD_DIR})
>>
>> ./autogen.sh
>> ./configure CFLAGS='-g3 -ggdb -O2 -fno-omit-frame-pointer -mtune=native 
>> -march=native' \
>>   --prefix=${INSTALL_PREFIX} \
>>   --with-mps=yes \
>>   --with-imagemagick  \
>>   --with-modules \
>>   --without-compress-install \
>>   --with-native-compilation  --with-mailutils\
>>   --enable-link-time-optimization \
>>   --with-tree-sitter --with-xinput2  \
>>   --with-dbus  --with-native-compilation=aot \
>>   --with-file-notification=inotify\
>>   && make -j30 install
>>
>> rm ../emacs-build/emacs
>> ln -s ${INSTALL_PREFIX} ../emacs-build/emacs
>
> Thanks, and sorry you're seeing so many crashes.  It's stable here, so
> we're going to need your help debugging this :-)
>
> Did you use any special options or patches when building mps (link time
> optimization or -O3, in particular)?  Could you please try (but please
> keep the core file and binary for this crash) rebuilding mps with "-g3
> -ggdb -O0" to see whether the problem is, maybe, mps rather than Emacs?
> That should also improve the debugging output, so please provide further
> crashes if they do happen with those options.
>
>> #9  0x0000000000690c05 in fix_lisp_obj (ss=ss@entry=0x7ffc7653e6f8, 
>> pobj=pobj@entry=0x7f08addd06b8) at 
>> /home/exec/Projects/git.savannah.gnu.org/git/emacs/src/igc.c:975
>
> This is the car of a cons cell, and it looks like it was freed by a
> previous garbage collection so it's no longer valid.
>
>>         off = <optimized out>
>>         client = <optimized out>
>>         base = 0x7f088a262a50
>
> Could you open the coredump again and run
>
> (gdb) x/32gx 0x7f088a262a00
>
> so we can get an idea of what was allocated around that time?
>
>>         res = <optimized out>
>>         new_off = <optimized out>
>>         p = 0x7f08addd06b8
>>         word = <optimized out>
>>         tag = <optimized out>
>>         _ss = 0x7ffc7653e6f8
>>         _mps_zs = <optimized out>
>>         _mps_ufs = 36029896530599944
>>         _mps_wt = <optimized out>
>>         _mps_w = <optimized out>
>> #10 0x00000000006919f8 in fix_cons (cons=0x7f08addd06b0, ss=0x7ffc7653e6f8) 
>> at /home/exec/Projects/git.savannah.gnu.org/git/emacs/src/igc.c:1751
>
> This is the cons cell itself (the IGC header is what "cons" points to).
>
> Please also run
>
> (gdb) x/64gx 0x7f08addd0600
>
> Thanks!
>
> Pip

Hello Pip, what git commit hash or git tag show I compile from 
https://github.com/Ravenbrook/mps
Should I compile mps from latest master branch, commit hash:
e2f9497bf3b842fdaa21942da4edd1e6f02b9509 ?
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