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(parent: b45e1f5) | patch
bpf: fix 32-bit ALU op verification
authorJann Horn <jannh@google.com>
Tue, 19 Dec 2017 04:11:56 +0000 (20:11 -0800)
committerBen Hutchings <ben@decadent.org.uk>
Fri, 22 Dec 2017 14:12:23 +0000 (14:12 +0000)
commitb34fe28640a78b37508b42cbe8e52fa4d2832903
tree908185dc6b37760feea758965fe37947a30c55a1tree | snapshot
parentb45e1f516dec92b7f0d6b0a4dd47a824f394213ecommit | diff
bpf: fix 32-bit ALU op verification

32-bit ALU ops operate on 32-bit values and have 32-bit outputs.
Adjust the verifier accordingly.

Fixes: f1174f77b50c ("bpf/verifier: rework value tracking")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Gbp-Pq: Topic bugfix/all
Gbp-Pq: Name bpf-fix-32-bit-alu-op-verification.patch
kernel/bpf/verifier.c diff | blob | history
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