It seem that sio_open(3) is more relevant to the "audio" pledge than the "bpf" one, so move the reference accordingly.
Index: pledge.2 =================================================================== RCS file: /cvs/src/lib/libc/sys/pledge.2,v retrieving revision 1.39 diff -u -p -r1.39 pledge.2 --- pledge.2 23 Jan 2017 07:19:39 -0000 1.39 +++ pledge.2 29 Jan 2017 17:38:16 -0000 @@ -528,15 +528,15 @@ devices: .Dv AUDIO_SETPAR , .Dv AUDIO_START , .Dv AUDIO_STOP . -.It Va bpf -Allow -.Dv BIOCGSTATS -operation for statistics collection from a bpf device. .Pp See .Xr sio_open 3 for more information on using the sndio API in combination with .Fn pledge . +.It Va bpf +Allow +.Dv BIOCGSTATS +operation for statistics collection from a bpf device. .El .Pp A whitelist of permitted paths may be provided in
