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(parent: a33a6ea) | patch
xsk: Add missing overflow check in xdp_umem_reg
authorKal Conley <kal.conley@dectris.com>
Wed, 8 Mar 2023 17:40:13 +0000 (18:40 +0100)
committerDaniel Borkmann <daniel@iogearbox.net>
Thu, 16 Mar 2023 15:02:55 +0000 (16:02 +0100)
commitc7df4813b149362248d6ef7be41a311e27bf75fe
treef0103937861f5164aaf40267913e280f7d222292tree | snapshot
parenta33a6eaa19d3af261e8708bfc8ba62020703117fcommit | diff
xsk: Add missing overflow check in xdp_umem_reg

The number of chunks can overflow u32. Make sure to return -EINVAL on
overflow. Also remove a redundant u32 cast assigning umem->npgs.

Fixes: bbff2f321a86 ("xsk: new descriptor addressing scheme")
Signed-off-by: Kal Conley <kal.conley@dectris.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/bpf/20230308174013.1114745-1-kal.conley@dectris.com
net/xdp/xdp_umem.c diff | blob | history
Domain: System / Kernel;