On 2020/4/15 15:23, Song Liu wrote: > > >> On Apr 14, 2020, at 6:37 PM, maowenan <maowenan@xxxxxxxxxx> wrote: >> >> On 2020/4/15 6:05, Song Liu wrote: >>> >>> >>>> On Apr 13, 2020, at 4:37 AM, Mao Wenan <maowenan@xxxxxxxxxx> wrote: >>>> >>>> Fixes gcc '-Wunused-but-set-variable' warning: >>>> >>>> kernel/bpf/verifier.c:5603:18: warning: variable ‘dst_known’ >>>> set but not used [-Wunused-but-set-variable] >>>> >>>> It is not used since commit f1174f77b50c ("bpf/verifier: >>>> rework value tracking") >>> >>> The fix makes sense. But I think f1174f77b50c introduced dst_known, >>> so this statement is not accurate. >>> >> thanks for review, yes, f1174f77b50c introduced dst_known, and below commit >> doesn't deference variable dst_known. So I send v2 later? >> 3f50f132d840 ("bpf: Verifier, do explicit ALU32 bounds tracking") > > I don't think we need to back port this to stable. So it is OK not to > include Fixes tag. We can just remove this statement in the commit log. > > bpf-next is not open yet. Please send v2 when bpf-next is open. > > Thanks, > Song > OK, I will do that.