From: Alexei Starovoitov Date: Tue, 4 Dec 2018 16:18:14 +0000 (-0800) Subject: Merge branch 'prog_test_run-improvement' X-Git-Tag: v5.0-rc1~129^2~114^2~11 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=2a95471c3397734ba6869ca3fa084490fb35b40b;p=users%2Fjedix%2Flinux-maple.git Merge branch 'prog_test_run-improvement' Lorenz Bauer says: ==================== Right now, there is no safe way to use BPF_PROG_TEST_RUN with data_out. This is because bpf_test_finish copies the output buffer to user space without checking its size. This can lead to the kernel overwriting data in user space after the buffer if xdp_adjust_head and friends are in play. Thanks to everyone for their advice and patience with this patch set! Changes in v5: * Fix up libbpf.map Changes in v4: * Document bpf_prog_test_run and bpf_prog_test_run_xattr * Use struct bpf_prog_test_run_attr for return values Changes in v3: * Introduce bpf_prog_test_run_xattr instead of modifying the existing function Changes in v2: * Make the syscall return ENOSPC if data_size_out is too small * Make bpf_prog_test_run return EINVAL if size_out is missing * Document the new behaviour of data_size_out ==================== Signed-off-by: Alexei Starovoitov --- 2a95471c3397734ba6869ca3fa084490fb35b40b