Re: vdso-related userspace crashes on 5.5 mips64

[Jason A. Donenfeld]

Hi Paul,

.config is attached. This is run with:

qemu-system-mips64 -nodefaults -nographic -smp 4 -cpu MIPS64R2-generic
-machine malta -smp 1 -m $(grep -q CONFIG_DEBUG_KMEMLEAK=y
/home/zx2c4/Projects/WireGuard/src/tests/qemu/../../../qemu-build/mips64/linux-linus-git/.config
&& echo 1G || echo 256M) -serial stdio -serial
file:/home/zx2c4/Projects/WireGuard/src/tests/qemu/../../../qemu-build/mips64/result
-no-reboot -monitor none -kernel
/home/zx2c4/Projects/WireGuard/src/tests/qemu/../../../qemu-build/mips64/linux-linus-git/vmlinux

This patch appears to "fix" the problem:
https://lore.kernel.org/linux-mips/20191224135404.389039-1-Jason@xxxxxxxxx/
though I don't yet have a handle on exactly what's causing the prior
crash.

Thanks,
Jason

Attachment: .config
Description: Binary data