Re: kern/53590: DTrace fbt_getargdesc() fails with "Unknown function"

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

The following reply was made to PR kern/53590; it has been noted by GNATS.

From: Patrick Welche <prlw1%cam.ac.uk@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/53590: DTrace fbt_getargdesc() fails with "Unknown function"
Date: Tue, 11 Sep 2018 11:29:57 +0100

 On Tue, Sep 11, 2018 at 08:30:01AM +0000, Andreas Gustafsson wrote:
 > >Release:        NetBSD 8.0; also -current as of Sep 10
 
 >   guido# modload dtrace_fbt
 >   guido# dtrace -n 'fbt::vmem_alloc:entry { trace(args[0]); }'
 >   dtrace: invalid probe specifier fbt::vmem_alloc:entry { trace(args[0]); }: in action list: index 0 is out of range for fbt::vmem_alloc:entry args[ ]
 > 
 > The following message appears on the console:
 > 
 >   guido /netbsd: fbt_getargdesc(2067): Unknown function vmem_alloc!
 
 I see:
 
 quark# modload dtrace_fbt
 quark#  dtrace -n 'fbt::vmem_alloc:entry { trace(args[0]); }'
 dtrace: description 'fbt::vmem_alloc:entry ' matched 1 probe
 CPU     ID                    FUNCTION:NAME
   1  20290                 vmem_alloc:entry       -2132062368
   1  20290                 vmem_alloc:entry       -2132060864
   1  20290                 vmem_alloc:entry       -2132062368
 ^C
 
 quark# uname -a
 NetBSD quark 8.99.25 NetBSD 8.99.25 (QUARK) #254: Mon Sep 10 11:38:46 BST 2018  prlw1@quark:/usr/src/sys/arch/amd64/compile/QUARK amd64
 
 and in dmesg:
 
 [ 6454.883380] dtrace: XXX dtrace_dof_property not implemented (name=dof-data-0)