Re: vhost changes (batched) in linux-next after 12/13 trigger random crashes in KVM guests after reboot

On Wed, Dec 18, 2019 at 03:43:43PM +0100, Christian Borntraeger wrote:

Michael,

with 
commit db7286b100b503ef80612884453bed53d74c9a16 (refs/bisect/skip-db7286b100b503ef80612884453bed53d74c9a16)
    vhost: use batched version by default
plus
commit 6bd262d5eafcdf8cdfae491e2e748e4e434dcda6 (HEAD, refs/bisect/bad)
    Revert "vhost/net: add an option to test new code"
to make things compile (your next tree is not easily bisectable, can you fix that as well?).

I'll try.

I get random crashes in my s390 KVM guests after reboot.
Reverting both patches together with commit decd9b8 "vhost: use vhost_desc instead of vhost_log" to
make it compile again) on top of linux-next-1218 makes the problem go away.

Looks like the batched version is not yet ready for prime time. Can you drop these patches until
we have fixed the issues?

Christian

Will do, thanks for letting me know.

-- 
MST