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(parent: 13a27df) | patch
bpf: recognize 64bit immediate loads as consts
authorJakub Kicinski <jakub.kicinski@netronome.com>
Wed, 21 Sep 2016 10:43:59 +0000 (11:43 +0100)
committerDavid S. Miller <davem@davemloft.net>
Wed, 21 Sep 2016 23:50:02 +0000 (19:50 -0400)
commit6b17387307bafc71624b9890b9239b6a438e2e89
tree7aca8f20e9bb67b803f70ae60cda1f53b397d325tree | snapshot (tar.gz zip)
parent13a27dfc669724564aafa2699976ee756029fed2commit | diff
bpf: recognize 64bit immediate loads as consts

When running as parser interpret BPF_LD | BPF_IMM | BPF_DW
instructions as loading CONST_IMM with the value stored
in imm.  The verifier will continue not recognizing those
due to concerns about search space/program complexity
increase.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
kernel/bpf/verifier.c diff | blob | blame | history