net: core: propagate unreadable flag in skb_zerocopy

skb_zerocopy() fails to propagate the unreadable flag when copying
unreadable fragments, causing target skbs to appear as readable memory.

This patch fixes the flag propagation. Additionally, it returns -EFAULT
if readable fragments are mixed with unreadable fragments during
extraction, and returns -EFAULT in openvswitch queue_userspace_packet().

Fixes: 65249feb6b3d ("net: add support for skbs with unreadable frags")
Cc: Stanislav Fomichev <sdf@fomichev.me>
Cc: Bobby Eshleman <bobbyeshleman@gmail.com>
Cc: Florian Westphal <fw@strlen.de>
Cc: Aaron Conole <aconole@redhat.com>
Cc: Eelco Chaudron <echaudro@redhat.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Ilya Maximets <i.maximets@ovn.org>
Link: https://patch.msgid.link/20260814191336.187243-1-almasrymina@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

0 files changed, 0 insertions, 0 deletions