On Wed, Nov 11, 2020 at 03:53:16PM +0100, David Hildenbrand wrote:
> Fixes: 9d5171a8f248 ("powerpc/powernv: Enable removal of memory for in memory
> tracing")
> Cc: sta...@vger.kernel.org# v4.14+
> Cc: Michael Ellerman
> Cc: Benjamin Herrenschmidt
> Cc: Paul Mackerras
> Cc: Rashmica Gupta
> Si
It's very easy to crash the kernel right now by simply trying to enable
memtrace concurrently, hammering on the "enable" interface
loop.sh:
#!/bin/bash
dmesg --console-off
while true; do
echo 0x4000 > /sys/kernel/debug/powerpc/memtrace/enable
done
[root@localhost ~]# loop.
