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| author | Martin KaFai Lau <kafai@fb.com> | 2017-09-29 19:52:17 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-01 05:09:42 +0200 |
| commit | 721e08dad17e226ef68819d0a23dc53c25fe8ea5 (patch) | |
| tree | c4cbe3a70e040358c9a0310f4b9a035750652952 /kernel/bpf/syscall.c | |
| parent | net_sched: remove redundant assignment to ret (diff) | |
| download | linux-721e08dad17e226ef68819d0a23dc53c25fe8ea5.tar.xz linux-721e08dad17e226ef68819d0a23dc53c25fe8ea5.zip | |
bpf: Fix compiler warning on info.map_ids for 32bit platform
This patch uses u64_to_user_ptr() to cast info.map_ids to a userspace ptr.
It also tags the user_map_ids with '__user' for sparse check.
Fixes: cb4d2b3f03d8 ("bpf: Add name, load_time, uid and map_ids to bpf_prog_info")
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | kernel/bpf/syscall.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 11a7f82a55d1..b927da66f653 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -1405,7 +1405,7 @@ static int bpf_prog_get_info_by_fd(struct bpf_prog *prog, info.nr_map_ids = prog->aux->used_map_cnt; ulen = min_t(u32, info.nr_map_ids, ulen); if (ulen) { - u32 *user_map_ids = (u32 *)info.map_ids; + u32 __user *user_map_ids = u64_to_user_ptr(info.map_ids); u32 i; for (i = 0; i < ulen; i++) |