SegFault when running almalinux:8 based docker images

[kvinwang]

It crashed in glibc at program start. Most commands are effected.
Reproduce:

docker run --rm -it almalinux:8 bash

almalinux:9 and almalinux:10 work fine though.

GDB couldn't catch the SEGFAULT:

[root@1f9eebb6f557 /]# /gdb/gdb bash
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Reading symbols from bash...

warning: Cannot parse .gnu_debugdata section; LZMA support was disabled at compile time
(No debugging symbols found in bash)
(gdb) r
Starting program: /usr/bin/bash
During startup program terminated with signal SIGSEGV, Segmentation fault.
(gdb)

strace.txt

[kvinwang]

Some updates:

Unable to determine the root cause.
Some attempts:

1. If run the same VM system without TDX enabled, it works.
2. Can not debug with GDB directly. However, it can generate core dump. We can see it crashed at __memmove_avx512_unaligned_erms from the dumped core.

(gdb) bt
#0  0x00007dceb90def45 in __memmove_avx512_unaligned_erms ()
   from /lib64/libc.so.6
#1  0x00007dceb9050134 in qsort_r () from /lib64/libc.so.6
#2  0x0000572f9c02fcbe in ?? ()
#3  0x0000572f9c02e5ec in main ()

3. After turning off avx512, it crashed at __memmove_avx_unaligned_erms.

(gdb) bt
#0  0x00007a70a52a7db7 in __memmove_avx_unaligned_erms () from /lib64/libc.so.6
#1  0x00007a70a524fce1 in msort_with_tmp.part () from /lib64/libc.so.6
#2  0x00007a70a5250134 in qsort_r () from /lib64/libc.so.6
#3  0x00005a5dcce2fcbe in ?? ()
#4  0x00005a5dcce2e5ec in main ()

4. After turning off avx, avx2 and avx512, it doesn't crash any more.
5. But it also call __memmove_avx512_unaligned_erms under AlmaLinux 9, as well as most other systems, without any error.
6. AlmaLinux 9 ships with glibc-2.34, AlmaLinux 8 ships with glibc-2.28.
7. When I compile the glibc-2.28 from source, and install it to AlmaLinux 8, then run the bash again, the segfault disappears.

The issue might be caused by some patches to glibc from AlmaLinux.