[Bug 1862986] Re: qemu-s390x crashes when run on aarch64

[Marco]

** Attachment added: "A test binary"
   
https://bugs.launchpad.net/qemu/+bug/1862986/+attachment/5331331/+files/test_bitcoin_orig

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https://bugs.launchpad.net/bugs/1862986

Title:
  qemu-s390x crashes when run on aarch64

Status in QEMU:
  Incomplete

Bug description:
  All tested versions (2.11 and 4.2) qemu-s390x crashes with a segfault
  when run on an aarch64 odroid Ubuntu.


  Steps to reproduce:

  root@odroid:~/workspace/bitcoin-core# /usr/local/bin/qemu-s390x 
"/root/workspace/bitcoin-core/build/bitcoin-s390x-linux-gnu/src/test/test_bitcoin_orig"
  Segmentation fault (core dumped)
  root@odroid:~/workspace/bitcoin-core# /usr/local/bin/qemu-s390x --version
  qemu-s390x version 4.2.0
  Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers
  root@odroid:~/workspace/bitcoin-core# /usr/bin/qemu-s390x 
"/root/workspace/bitcoin-core/build/bitcoin-s390x-linux-gnu/src/test/test_bitcoin_orig"
  Segmentation fault (core dumped)
  root@odroid:~/workspace/bitcoin-core# /usr/bin/qemu-s390x --version
  qemu-s390x version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.22)
  Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

  qemu-arm does work on the same machine:

  root@odroid:~/workspace/bitcoin-core# /usr/bin/qemu-arm 
bitcoin-0.19.0.1-armhf/bin/test_bitcoin -t amount_tests
  Running 4 test cases...

  *** No errors detected
  root@odroid:~/workspace/bitcoin-core# /usr/local/bin/qemu-arm 
bitcoin-0.19.0.1-armhf/bin/test_bitcoin -t amount_tests
  Running 4 test cases...

  *** No errors detected


  
  What kind of debug information would be helpful for this issue report?
  GDB for the self-compiled latest release is not particularly helpful:

  (gdb) run
  Starting program: /usr/local/bin/qemu-s390x 
/root/workspace/bitcoin-core/build/bitcoin-s390x-linux-gnu/src/test/test_bitcoin_orig
  [Thread debugging using libthread_db enabled]
  Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1".
  [New Thread 0x7fb7a2a140 (LWP 28264)]

  Thread 1 "qemu-s390x" received signal SIGSEGV, Segmentation fault.
  0x000000555596b218 in __bss_start__ ()
  (gdb) bt
  #0  0x000000555596b218 in __bss_start__ ()
  #1  0x00000055556120a8 in ?? ()
  #2  0x00000055579904b0 in ?? ()
  Backtrace stopped: previous frame inner to this frame (corrupt stack?)


  
  A bit more information is available in the version shipped by Ubuntu:

  (gdb) run
  Starting program: /usr/bin/qemu-s390x 
/root/workspace/bitcoin-core/build/bitcoin-s390x-linux-gnu/src/test/test_bitcoin_orig
  [Thread debugging using libthread_db enabled]
  Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1".
  [New Thread 0x7fb7a01180 (LWP 28271)]

  Thread 1 "qemu-s390x" received signal SIGSEGV, Segmentation fault.
  0x0000005555738f98 in code_gen_buffer ()
  (gdb) bt
  #0  0x0000005555738f98 in code_gen_buffer ()
  #1  0x00000055555e96c8 in cpu_exec ()
  #2  0x00000055555ee430 in cpu_loop ()
  #3  0x00000055555c3328 in main ()

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