Re: [PATCH bpf] Revert "bpf: program: Refuse non-O_RDWR flags in BPF_OBJ_GET"

[Greg Kroah-Hartman]

On 6/18/21 12:55 PM, Maciej Żenczykowski wrote:
> From: Maciej Żenczykowski <maze@xxxxxxxxxx>
>
> This reverts commit d37300ed182131f1757895a62e556332857417e5.
>
> This breaks Android userspace which expects to be able to
> fetch programs with just read permissions.
>
> See: https://cs.android.com/android/platform/superproject/+/master:frameworks/libs/net/common/native/bpf_syscall_wrappers/include/BpfSyscallWrappers.h;drc=7005c764be23d31fa1d69e826b4a2f6689a8c81e;l=124
>
> Cc: Alexei Starovoitov <ast@xxxxxxxxxx>
> Cc: Andrii Nakryiko <andrii@xxxxxxxxxx>
> Cc: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxx>
> Cc: Lorenz Bauer <lmb@xxxxxxxxxxxxxx>
> Fixes: d37300ed1821 ("bpf: program: Refuse non-O_RDWR flags in BPF_OBJ_GET")
> Signed-off-by: Maciej Żenczykowski <maze@xxxxxxxxxx>
> ---

Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxx>