bpf: use array_index_nospec in find_prog_type
authorDaniel Borkmann <daniel@iogearbox.net>
Fri, 4 May 2018 00:13:57 +0000 (02:13 +0200)
committerAlexei Starovoitov <ast@kernel.org>
Fri, 4 May 2018 02:29:35 +0000 (19:29 -0700)
commitd0f1a451e33d9ca834422622da30aa68daade56b
tree1990205f87f77c7b165ac2af26a09b539bcbeb2c
parent9ef09e35e521bf0df5325cc9cffa726a8f5f3c1b
bpf: use array_index_nospec in find_prog_type

Commit 9ef09e35e521 ("bpf: fix possible spectre-v1 in find_and_alloc_map()")
converted find_and_alloc_map() over to use array_index_nospec() to sanitize
map type that user space passes on map creation, and this patch does an
analogous conversion for progs in find_prog_type() as it's also passed from
user space when loading progs as attr->prog_type.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
kernel/bpf/syscall.c