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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
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Florian Westphal
da5b58478a
sashiko reports:
When an skb with unreadable fragments (such as from devmem TCP, where
skb_frags_readable(skb) returns false) is processed by the u32 module,
skb_copy_bits() will safely return a negative error code [..]
xt_u32: bail out with hotdrop in this case.
gather_frags: return -1, just as if we had no fragment header.
nfnetlink_queue: restrict to the linear part.
nfnetlink_log: restrict to the linear part.
v2:
- skb_zerocopy helpers don't copy readable flag, i.e. nfnetlink_queue
is broken too
xt_u32 shouldn't return true if hotdrop was set.
Fixes: 65249feb6b ("net: add support for skbs with unreadable frags")
Cc: [email protected]
Acked-by: Mina Almasry <[email protected]>
Signed-off-by: Florian Westphal <[email protected]>