https://github.com/torvalds/linux
Revision 1f5d2e3bab16369d5d4b4020a25db4ab1f4f082c authored by Andrey Smetanin on 24 April 2023, 20:44:11 UTC, committed by Michael S. Tsirkin on 08 June 2023, 19:43:08 UTC
Fix possible virtqueue used buffers leak and corresponding stuck
in case of temporary -EIO from sendmsg() which is produced by
tun driver while backend device is not up.

In case of no-retriable error and zcopy do not revert upend_idx
to pass packet data (that is update used_idx in corresponding
vhost_zerocopy_signal_used()) as if packet data has been
transferred successfully.

v2: set vq->heads[ubuf->desc].len equal to VHOST_DMA_DONE_LEN
in case of fake successful transmit.

Signed-off-by: Andrey Smetanin <asmetanin@yandex-team.ru>
Message-Id: <20230424204411.24888-1-asmetanin@yandex-team.ru>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Andrey Smetanin <asmetanin@yandex-team.ru>
Acked-by: Jason Wang <jasowang@redhat.com>
1 parent 376daf3
History
Tip revision: 1f5d2e3bab16369d5d4b4020a25db4ab1f4f082c authored by Andrey Smetanin on 24 April 2023, 20:44:11 UTC
vhost_net: revert upend_idx only on retriable error
Tip revision: 1f5d2e3
File Mode Size
Documentation
LICENSES
arch
block
certs
crypto
drivers
fs
include
init
io_uring
ipc
kernel
lib
mm
net
rust
samples
scripts
security
sound
tools
usr
virt
.clang-format -rw-r--r-- 20.1 KB
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 151 bytes
.gitattributes -rw-r--r-- 90 bytes
.gitignore -rw-r--r-- 2.1 KB
.mailmap -rw-r--r-- 27.9 KB
.rustfmt.toml -rw-r--r-- 369 bytes
COPYING -rw-r--r-- 496 bytes
CREDITS -rw-r--r-- 100.1 KB
Kbuild -rw-r--r-- 2.5 KB
Kconfig -rw-r--r-- 555 bytes
MAINTAINERS -rw-r--r-- 693.5 KB
Makefile -rw-r--r-- 70.1 KB
README -rw-r--r-- 727 bytes

README

back to top