On 2019-04-12 06:43:31 [-0700], Guenter Roeck wrote: > On 4/12/19 1:42 AM, Sebastian Andrzej Siewior wrote: > > On 2019-04-10 21:07:35 [-0700], Guenter Roeck wrote: > > > Hi Sebastian, > > Hi Guenter, > > > > > Unfortunately, this patch causes random crashes. > > … > > > This is seen with an arm64 image running on qemu with machine xlnx-zcu102 > > > and two CPUs, and crypto test options enabled. It happens roughly every > > > other boot. Reverting the patch fixes the problem. Bisect log (from > > > crypto/master) is attached. > > > > What is it that you are doing? I had it tcrypt tested on x86-64 before > > posting. Let me check it again with the next tree on qemu… > > > > Nothing special. Booting arm64:defconfig+various debug and test options in qemu. > It does not seem to depend on specific boot options. Crash failure rate, based > on the last three of days testing, seems to be roughly 20%. The problem is only > seen if there is more than one CPU. I have seen it with 2, 4, and 6 CPUs active, > but it seems to be most likely to happen with 2 CPUs. I don't have enough data > yet to be sure, though. > > The problem is only seen with arm64, at least in my tests. I found your test thingy and I managed to run it here. I started rootfs/arm64/run-qemu-arm64.sh a few times (only with the xlnx-zcu102 targets) and after the third iteration it exploded once. So I have this, let me try to dig further. > Guenter Sebastian
