On 8/3/23 4:12 PM, thinker.li@xxxxxxxxx wrote:
From: Kui-Feng Lee <thinker.li@xxxxxxxxx> 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@xxxxxxxxxx> 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@xxxxxxxxx> Signed-off-by: Kui-Feng Lee <thinker.li@xxxxxxxxx>
Acked-by: Yonghong Song <yonghong.song@xxxxxxxxx>
