Re: [Qemu-devel] [PATCH v1 0/8] testing/next

[Thomas Huth]

On 20/02/2019 21.52, Alex Bennée wrote:
> 
> Alex Bennée <address@hidden> writes:
> 
>> Hi,
>>
>>   tests/boot-sector.c:161:boot_sector_test:
>>     assertion failed (signature == SIGNATURE): (0x0000face == 0x0000dead)
>>
>> I have seen this locally and got a core dump but it doesn't show much.
>> I'm going to see if I can get more out of a debug build. It is
>> generated by:
>>
>>   tests/cdrom-test -m=quick -k --tap
>>
>> I think the subtest is:
>>
>>   /x86_64/cdrom/boot/isapc
>>
>> Attaching to the child QEMU looks like it is eternally returning
>> -EINTR and looping around with the occasionally kvm_handle_io to port
>> 146 and port 112. I guess under test conditions this eventually times
>> out and dies.
> <snip>
> 
> This is load related. I can run:
> 
>   retry.py --timeout 600 -n 500 -c -- \
>     env QTEST_QEMU_BINARY=x86_64-softmmu/qemu-system-x86_64 \
>         QTEST_QEMU_IMG=qemu-img ./tests/cdrom-test \
>         -m=quick -p /x86_64/cdrom/boot/isapc
> 
> and then all 500 run fine. If I do the same while running a make check
> check-tcg -j9 in another build directory it hangs within 20 odd
> attempts.
> 
> Can anyone else reproduce this?

I can't reproduce it here. Might be worth a try to check the BIOS output
in that case. Add this patch:

diff --git a/tests/cdrom-test.c b/tests/cdrom-test.c
index 14bd981..c38e016 100644
--- a/tests/cdrom-test.c
+++ b/tests/cdrom-test.c
@@ -132,7 +132,7 @@ static void add_x86_tests(void)
     qtest_add_data_func("cdrom/boot/virtio-scsi",
                         "-device virtio-scsi -device scsi-cd,drive=cdr "
                         "-blockdev file,node-name=cdr,filename=", test_cdboot);
-    qtest_add_data_func("cdrom/boot/isapc", "-M isapc "
+    qtest_add_data_func("cdrom/boot/isapc", "-M isapc -vga none -device sga 
-serial file:/tmp/stdio "
                         "-drive if=ide,media=cdrom,file=", test_cdboot);
     qtest_add_data_func("cdrom/boot/am53c974",
                         "-device am53c974 -device scsi-cd,drive=cd1 "

... then check /tmp/stdio when it hangs.

 Thomas