On Wed, May 28, 2014 at 12:29:43PM +0100, Peter Maydell wrote: > On 27 May 2014 22:38, Peter Maydell <peter.mayd...@linaro.org> wrote: > > I'm seeing this test failure intermittently on 'make check': > > > > ERROR:/root/qemu/tests/acpi-test.c:618:test_acpi_one: assertion failed > > (signature == SIGNATURE): (0x00000000 == 0x0000dead) > > GTester: last random seed: R02S8d0d60963e4442ce284a81d20ce32053 > > > > (32 bit ARM host, in case that makes a difference.) > > > > Any ideas? It looks from the test as if this may just be > > that the test is coded to assume a faster machine, which > > is a bit unfortunate. > > Well, I put some diagnostic printing in, and it looks like that > guess was wrong. Most of the time we complete well within > the timeout limit for the test: > > TEST: tests/acpi-test... (pid=10639) > /i386/acpi/tcg: > ........ : looped for 8 cycles total (limit 600) > main-loop: WARNING: I/O thread spun for 1000 iterations > ......... : looped for 9 cycles total (limit 600) > main-loop: WARNING: I/O thread spun for 1000 iterations > OK > PASS: tests/acpi-test > > But occasionally we don't: > > TEST: tests/acpi-test... (pid=10679) > /i386/acpi/tcg: > ........ : looped for 8 cycles total (limit 600) > main-loop: WARNING: I/O thread spun for 1000 iterations > ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ > : looped for 600 cycles total (limit 600) > ** > ERROR:/root/qemu/tests/acpi-test.c:620:test_acpi_one: assertion failed > (signature == SIGNATURE): (0x00000000 == 0x0000dead) > FAIL > GTester: last random seed: R02S1fd7be17c4dc962a399b016f9153e15a > (pid=10688) > FAIL: tests/acpi-test > > thanks > -- PMM
I suspect a memory ordering issue. Looking at it. -- MST
