vhost: vringh: Fix copy_to_iter return value check

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[ Upstream commit 439263376c ]

The return value of copy_to_iter can't be negative, check whether the
copied length is equal to the requested length instead of checking for
negative values.

Cc: zhang jiao <zhangjiao2@cmss.chinamobile.com>
Link: https://lore.kernel.org/all/20250910091739.2999-1-zhangjiao2@cmss.chinamobile.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Fixes: 309bba39c9 ("vringh: iterate on iotlb_translate to handle large translations")
Link: https://patch.msgid.link/cd637504a6e3967954a9e80fc1b75e8c0978087b.1758723310.git.mst@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Michael S. Tsirkin 2025-09-25 02:04:08 -04:00 • committed by Greg Kroah-Hartman

parent 35ce5f1638

commit 68aac2b335

1 changed files with 4 additions and 3 deletions

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drivers/vhost/vringh.c

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