On Mon, Jun 15, 2020 at 10:04:30PM -0700, Andrii Nakryiko wrote: > During recent refactorings, bpf_probe_read_kernel_str() started returning 0 on > success, instead of amount of data successfully read. This majorly breaks > applications relying on bpf_probe_read_kernel_str() and bpf_probe_read_str() > and their results. Fix this by returning actual number of bytes read. > > Cc: Christoph Hellwig <hch@xxxxxx> > Fixes: 8d92db5c04d1 ("bpf: rework the compat kernel probe handling") > Signed-off-by: Andrii Nakryiko <andriin@xxxxxx> Looks good, thanks for fixing this up: Reviewed-by: Christoph Hellwig <hch@xxxxxx>