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qemu-s390x segfaults
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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