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(parent: f62bb88) | patch
nfp: bpf: prevent integer overflow in nfp_bpf_event_output()
authorDan Carpenter <dan.carpenter@linaro.org>
Mon, 13 Jan 2025 06:18:39 +0000 (09:18 +0300)
committerJakub Kicinski <kuba@kernel.org>
Tue, 14 Jan 2025 22:55:25 +0000 (14:55 -0800)
commit16ebb6f5b6295c9688749862a39a4889c56227f8
treec3277f7fff024b22bb46a6bd399721eb1e8bb16ftree
parentf62bb88782ffc2d8b619ac781ca26582b00c4db6commit | diff
nfp: bpf: prevent integer overflow in nfp_bpf_event_output()

The "sizeof(struct cmsg_bpf_event) + pkt_size + data_size" math could
potentially have an integer wrapping bug on 32bit systems.  Check for
this and return an error.

Fixes: 9816dd35ecec ("nfp: bpf: perf event output helpers support")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://patch.msgid.link/6074805b-e78d-4b8a-bf05-e929b5377c28@stanley.mountain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
drivers/net/ethernet/netronome/nfp/bpf/offload.c diff | blob | history
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