[Bug]: ffmpeg crash when preanalysis is enabled

[RiantAnda]

Describe the bug
When I run ffmpeg with any AMF video encoder with preanalysis enabled, ffmpeg crashes with a core dump.

To Reproduce
Run
ffmpeg -loglevel debug -hide_banner -f lavfi -i nullsrc=s=1280x720:d=300 -vf "geq=random(1)*255:128:128" -c:v h264_amf -pix_fmt nv12 -preanalysis true $(date +%Y-%m-%d_%H-%M-%S).mkv
This command crashes nearly each time at different times in the encoding process.
If it doesn't crash the first time, run a few times more.

Setup:

• Driver Version: 24.20 Ubuntu 24.04 / AMF 1.4.35
• GPU: RX 7900 XTX
• FFMPEG: 7.1 and latest master

Debug Log:
No useful debug info, ffmpeg crashes with messages like:
malloc(): unsorted double linked list corrupted
or
free(): double free detected in tcache 2

This could be related to:
#518

[RiantAnda]

This issue (looks like a memory leak to me), is not reproducible with 24.10 / AMF 1.4.34.

With the unreleased(?) 24.30 / AMF 1.4.36, this issue still happens, but it seems less frequent?!?

[MikhailAMD]

We will check but we fixed one memory-related bug. The fix should appear in the final 24.30.