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| author | Kui-Feng Lee <thinker.li@gmail.com> | 2023-08-03 16:12:06 -0700 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2023-08-04 14:53:15 -0700 |
| commit | 5426700e6841bf72e652e34b5cec68eadf442435 (patch) | |
| tree | d941223b2a2b53391047fdb6084c2a2bd63bcb9c /net/netlabel | |
| parent | 8a60a041eada0fbfdc7b6b7a10fdf68ae6a840ce (diff) | |
bpf: fix bpf_dynptr_slice() to stop return an ERR_PTR.
Verify if the pointer obtained from bpf_xdp_pointer() is either an error or
NULL before returning it.
The function bpf_dynptr_slice() mistakenly returned an ERR_PTR. Instead of
solely checking for NULL, it should also verify if the pointer returned by
bpf_xdp_pointer() is an error or NULL.
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/bpf/d1360219-85c3-4a03-9449-253ea905f9d1@moroto.mountain/
Fixes: 66e3a13e7c2c ("bpf: Add bpf_dynptr_slice and bpf_dynptr_slice_rdwr")
Suggested-by: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Signed-off-by: Kui-Feng Lee <thinker.li@gmail.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/20230803231206.1060485-1-thinker.li@gmail.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Diffstat (limited to 'net/netlabel')
0 files changed, 0 insertions, 0 deletions