vhost: fail early when __vhost_add_used() fails

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[ Upstream commit b4ba1207d4 ]

This patch fails vhost_add_used_n() early when __vhost_add_used()
fails to make sure used idx is not updated with stale used ring
information.

Reported-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20250714084755.11921-2-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Jason Wang 2025-07-14 16:47:53 +08:00 • committed by Greg Kroah-Hartman

parent 1fc8b74dc5

commit cad9d47eff

1 changed files with 3 additions and 0 deletions

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drivers/vhost/vhost.c

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