Copying in Tim who did the final phase of the changes.
On Mon, 24 Apr 2023 at 11:32, Paul Durrant wrote:
>
> On 20/04/2023 12:02, mark.s...@citrix.com wrote:
> > From: Mark Syms
> >
> > Ensure the PV ring is drained on disconnect. Also ensure all pending
> > AIO is
From: Mark Syms
Ensure the PV ring is drained on disconnect. Also ensure all pending
AIO is complete, otherwise AIO tries to complete into a mapping of the
ring which has been torn down.
Signed-off-by: Mark Syms
---
CC: Stefano Stabellini
CC: Anthony Perard
CC: Paul Durrant
CC: xen-de
Updated patch to address intermittent SIGSEGV on domain disconnect/shutdown.
Mark Syms (1):
Ensure the PV ring is drained on disconnect
hw/block/dataplane/xen-block.c | 31 +--
1 file changed, 25 insertions(+), 6 deletions(-)
--
2.40.0
>F
If the Xen PV guest VM sends a close whilst there is outstanding I/O
being processed that IO needs to be completed and drained before
unrealizing the rings or SEGVs will occurr when the I/O does complete
and tries to update an already unmapped grant entry.
Also ensure all pending AIO is complete.
Signed-off-by: Mark Syms
---
hw/block/dataplane/xen-block.c | 16
1 file changed, 16 insertions(+)
diff --git a/hw/block/dataplane/xen-block.c b/hw/block/dataplane/xen-block.c
index 734da42ea7..067f8e2f45 100644
--- a/hw/block/dataplane
Hi,
While trying to track down an issue in using qemu 4.1 with some development
features we needed/wanted to run valgrind on it to find a memory error.
Unfortunately the form of the queue macros seems to really confuse valgrind and
cause it to report many " Use of uninitialised value " errors.
