On Tue, Aug 31, 2021 at 09:09:10AM +0200, Christian Borntraeger wrote: > > > On 31.08.21 04:19, Nathan Chancellor wrote: > > Hi Heiko, > > > > On Mon, Aug 30, 2021 at 03:11:50PM +0200, Heiko Carstens wrote: > > > - Enable KCSAN for s390. This comes with a small common code change to fix a > > > compile warning. Acked by Marco Elver: > > > https://lore.kernel.org/r/20210729142811.1309391-1-hca@xxxxxxxxxxxxx/ > > > > This caught my eye, as we are boot testing KCSAN + KCSAN_KUNIT_TEST in > > our CI [1] for x86_64 so it would be nice to enable this for s390 as > > well. However, it does not seem like the unit tests pass when booting up > > in QEMU, is this expected or am I doing something wrong? The results and > > compiler versions are below (the results are the same), they should both > > have the commits that are mentioned in the KCSAN message. > > Do you have a branch somewhere where you have the s390 build rules as well as > the qemu command line? Maybe its a QEMU TCG issue, dont know. CC qemu-s390x > just in case. I really don't think this is QEMU related. The test fails are sort of expected: we've seen KCSAN reports when the kernel boots and wanted to fix them later. However I have to admit that I wasn't aware of the KCSAN KUNIT tests, and wouldn't have sent the s390 KCSAN enablement upstream if I would have been aware of failing self tests. We'll fix them, and I let you know if things are supposed to work. Thanks a lot for making aware of this!
