On Mon, Aug 01, 2022 at 05:57:02PM +0300, Ovidiu Panait wrote: > From: Jakub Sitnicki <jakub@xxxxxxxxxxxxxx> > > commit 8f50f16ff39dd4e2d43d1548ca66925652f8aff7 upstream. > > Add coverage to the verifier tests and tests for reading bpf_sock fields to > ensure that 32-bit, 16-bit, and 8-bit loads from dst_port field are allowed > only at intended offsets and produce expected values. > > While 16-bit and 8-bit access to dst_port field is straight-forward, 32-bit > wide loads need be allowed and produce a zero-padded 16-bit value for > backward compatibility. > > Signed-off-by: Jakub Sitnicki <jakub@xxxxxxxxxxxxxx> > Link: https://lore.kernel.org/r/20220130115518.213259-3-jakub@xxxxxxxxxxxxxx > Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx> > [OP: backport to 5.10: adjusted context in sock_fields.c] > Signed-off-by: Ovidiu Panait <ovidiu.panait@xxxxxxxxxxxxx> > --- > This series fixes the following bpf verfier selftest failures: > root@intel-x86-64:~# ./test_verifier > ... > #908/u sk_fullsock(skb->sk): sk->dst_port [load 2nd byte] FAIL > #908/p sk_fullsock(skb->sk): sk->dst_port [load 2nd byte] FAIL All now queued up, thanks. gre gk-h
