diff options
| author | Daniel Borkmann <daniel@iogearbox.net> | 2020-05-15 12:11:17 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-05-15 17:10:36 +0200 |
| commit | 47cc0ed574abcbbde0cf143ddb21a0baed1aa2df (patch) | |
| tree | b8872b7cca31323beb60b824bbd073bd5b34197c /Documentation | |
| parent | bpf: Restrict bpf_probe_read{, str}() only to archs where they work (diff) | |
| download | linux-47cc0ed574abcbbde0cf143ddb21a0baed1aa2df.tar.xz linux-47cc0ed574abcbbde0cf143ddb21a0baed1aa2df.zip | |
bpf: Add bpf_probe_read_{user, kernel}_str() to do_refine_retval_range
Given bpf_probe_read{,str}() BPF helpers are now only available under
CONFIG_ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE, we need to add the drop-in
replacements of bpf_probe_read_{kernel,user}_str() to do_refine_retval_range()
as well to avoid hitting the same issue as in 849fa50662fbc ("bpf/verifier:
refine retval R0 state for bpf_get_stack helper").
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20200515101118.6508-3-daniel@iogearbox.net
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions