tree ae74d60039bef82d303017c162822f4fa8ddbf02
parent 468f6eafa6c44cb2c5d8aad35e12f06c240a812a
author Jann Horn <jannh@google.com> 1513656717 -0800
committer Daniel Borkmann <daniel@iogearbox.net> 1513818941 +0100

bpf: fix missing error return in check_stack_boundary()

Prevent indirect stack accesses at non-constant addresses, which would
permit reading and corrupting spilled pointers.

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>