Re: [Qemu-devel] [PATCH 4/4] ahci-test: improve rw buffer patterns

[John Snow]

On 03/31/2015 05:29 PM, Ed Maste wrote:
> On 31 March 2015 at 16:58, John Snow <address@hidden> wrote:
> > which test case does it fail under? io_rw_simple is shared by a number of
> > different tests.
>
> I'm not sure off hand how to run an individual test to confirm, but
> the testrun output up to the failure is:
>
>    LINK  tests/spapr-phb-test
> GTESTER check-qtest-aarch64
> GTESTER check-qtest-alpha
> GTESTER check-qtest-arm
> GTESTER check-qtest-cris
> GTESTER check-qtest-i386
> blkdebug: Suspended request 'A'
> blkdebug: Resuming request 'A'
> **
> ERROR:tests/ahci-test.c:790:ahci_test_io_rw_simple: assertion failed
> (memcmp(tx, rx, bufsize) == 0): (0xffffffffffffffff == 0x00000000)
> GTester: last random seed: R02S181acd6574060796874e02dbdeb86199
>
> Generally speaking I've only encountered build errors on FreeBSD, and
> as long as it built the full test suite passed.
>
> > I suspect deeply that this test pattern has just unearthed an existing
> > problem.
>
> Yeah, it's almost certainly just exposing the existing failure.

My apologies;

Head into your build directory and try this:

> make tests/ahci-test
> export QTEST_QEMU_BINARY=i386-softmmu/qemu-system-i386
> export QTEST_QEMU_IMG=./qemu-img
> ./tests/ahci-test

This should show you which test in particular is failing. I have a hunch 
it will be the PIO, again...

In the meantime, what is your setup? which release, what architecture?

Thank you,
--John