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From: "manuel.lauss at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug malloc/30301] "memalign: Support scanning for aligned chunks"
 (24cdd6c71debfd10a9f7cb217fe2a2c4c486ed6f) causes regression in game
 "factorio" (malloc.c:3617 (_mid_memalign): assertion failed: ...)
Date: Tue, 11 Apr 2023 08:04:03 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D30301

--- Comment #5 from Manuel Lauss <manuel.lauss at gmail dot com> ---
(In reply to Manuel Lauss from comment #4)
> (In reply to Manuel Lauss from comment #3)
> > DJ's latest patch does fix the issue for me.
>=20
> Ok I have to take that back:  With DJ's fix applied on top of git head,
> Factorio now works, but mpv/ffmpeg now throw this error on any video file:
> (ffmpeg-5.1.2, apologies for the missing symbol names, but it should
> illustrate the issue):
>=20
> #0  0x00007ffff5d53bfc in  () at /usr/lib64/libc.so.6
> #1  0x00007ffff5d03572 in raise () at /usr/lib64/libc.so.6
> #2  0x00007ffff5cec49f in abort () at /usr/lib64/libc.so.6
> #3  0x00007ffff5ced3a4 in  () at /usr/lib64/libc.so.6
> #4  0x00007ffff5cfbba3 in  () at /usr/lib64/libc.so.6
> #5  0x00007ffff5d61b40 in  () at /usr/lib64/libc.so.6
> #6  0x00007ffff5d62102 in  () at /usr/lib64/libc.so.6
> #7  0x00007ffff5d6395d in posix_memalign () at /usr/lib64/libc.so.6
> #8  0x00007ffff6663f0f in av_malloc () at /usr/lib64/libavutil.so.57
> #9  0x00007ffff71490fa in  () at /usr/lib64/libavcodec.so.59
> #10 0x00007ffff7141d2f in  () at /usr/lib64/libavcodec.so.59
> #11 0x00007ffff7141ef8 in  () at /usr/lib64/libavcodec.so.59
> #12 0x00007ffff714cde6 in  () at /usr/lib64/libavcodec.so.59
> #13 0x00007ffff6e9cb6c in  () at /usr/lib64/libavcodec.so.59
> #14 0x00007ffff6eb9a04 in  () at /usr/lib64/libavcodec.so.59
> #15 0x00007ffff6f7d599 in avcodec_open2 () at /usr/lib64/libavcodec.so.59

Fatal glibc error: malloc.c:5197 (_int_memalign): assertion failed: newsize=
 >=3D
nb && (((unsigned long) (chunk2mem (p))) % alignment) =3D=3D 0

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