]> Git Repo - linux.git/commit
wireguard: queueing: use CFI-safe ptr_ring cleanup function
authorJason A. Donenfeld <[email protected]>
Wed, 30 Mar 2022 01:31:24 +0000 (21:31 -0400)
committerJakub Kicinski <[email protected]>
Thu, 31 Mar 2022 02:14:08 +0000 (19:14 -0700)
commitec59f128a9bd4255798abb1e06ac3b442f46ef68
treeda3e96ab89bcc590a35ecad49e0cb6186267a7c0
parentc9ad266bbef58dcbb6e74a6dbc5c4c2ed166e9b7
wireguard: queueing: use CFI-safe ptr_ring cleanup function

We make too nuanced use of ptr_ring to entirely move to the skb_array
wrappers, but we at least should avoid the naughty function pointer cast
when cleaning up skbs. Otherwise RAP/CFI will honk at us. This patch
uses the __skb_array_destroy_skb wrapper for the cleanup, rather than
directly providing kfree_skb, which is what other drivers in the same
situation do too.

Reported-by: PaX Team <[email protected]>
Fixes: 886fcee939ad ("wireguard: receive: use ring buffer for incoming handshakes")
Signed-off-by: Jason A. Donenfeld <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
drivers/net/wireguard/queueing.c
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