amd64/185290: Dtrace does not work on -stable/10

[Robert David]

The following reply was made to PR amd64/185290; it has been noted by GNATS.

From: Robert David <robert.david.public at gmail.com>
To: John-Mark Gurney <jmg at funkthat.com>
Cc: freebsd-gnats-submit at freebsd.org
Subject: Re: amd64/185290: Dtrace does not work on -stable/10
Date: Mon, 30 Dec 2013 18:52:18 +0100

 Hi John-Mark,
 
 thanks for fast reply. Yes I got all modules loaded:
 
 root at notebook ~src (git)-[53624fa...] # dtrace -l | wc -l
    42596
 root at notebook ~src (git)-[53624fa...] # kldstat
 Id Refs Address            Size     Name
  1  109 0xffffffff80200000 b1b000   kernel
  2   15 0xffffffff80eda000 594d     opensolaris.ko
  3    1 0xffffffff80ee0000 223a51   zfs.ko
  4    1 0xffffffff81104000 4632     acpi_dock.ko
  5    1 0xffffffff81109000 6df3     acpi_ibm.ko
  6    1 0xffffffff81110000 149d5    ehci.ko
  7    1 0xffffffff81125000 fd38     uhci.ko
  8    1 0xffffffff81135000 efc3     ukbd.ko
  9    1 0xffffffff81212000 9bb4     linprocfs.ko
 10    2 0xffffffff8121c000 42d5a    linux.ko
 11    1 0xffffffff8125f000 5219     fdescfs.ko
 12    1 0xffffffff81265000 13050    ext2fs.ko
 13    1 0xffffffff81279000 a07d     tmpfs.ko
 14    1 0xffffffff81284000 d863     fuse.ko
 15    1 0xffffffff81292000 b41a     aio.ko
 16    3 0xffffffff8129e000 3f5a     libiconv.ko
 17    1 0xffffffff812a2000 153f     libmchain.ko
 18    1 0xffffffff812a4000 791      cd9660_iconv.ko
 19    1 0xffffffff812a5000 799      msdosfs_iconv.ko
 20    1 0xffffffff812a6000 2915     coretemp.ko
 21    1 0xffffffff812a9000 5556     if_tap.ko
 22    1 0xffffffff812af000 5499     linsysfs.ko
 23    1 0xffffffff812b5000 2ecf0    vboxdrv.ko
 24    1 0xffffffff812e4000 10769    ipfw.ko
 25    1 0xffffffff812f5000 aeb0     i915.ko
 26    1 0xffffffff81300000 1478c    drm.ko
 27    1 0xffffffff81315000 8bf      dtraceall.ko
 28    3 0xffffffff81316000 1da9     cyclic.ko
 29   11 0xffffffff81318000 35e47    dtrace.ko
 30    1 0xffffffff8134e000 edf      dtio.ko
 31    1 0xffffffff8134f000 44b3     dtmalloc.ko
 32    1 0xffffffff81354000 2203     dtnfscl.ko
 33    1 0xffffffff81357000 6254     fbt.ko
 34    1 0xffffffff8135e000 a5a3     fasttrap.ko
 35    1 0xffffffff81369000 482f     lockstat.ko
 36    1 0xffffffff8136e000 4af9     sdt.ko
 37    1 0xffffffff81373000 d4c4     systrace.ko
 38    1 0xffffffff81381000 d138     systrace_freebsd32.ko
 39    1 0xffffffff8138f000 4b49     profile.ko
 40    1 0xffffffff81394000 34a6     ums.ko
 41    1 0xffffffff81398000 2a08     uhid.ko
 
 
 I just tried to play with kernel and anything here is enabled (dtrace stuff). On plain GENERIC kernel it is the same.
 
 Robert.
 
 
 
 
 On Mon, 30 Dec 2013 09:28:49 -0800
 John-Mark Gurney <jmg at funkthat.com> wrote:
 
 > Robert David wrote this message on Mon, Dec 30, 2013 at 12:00 +0000:
 > > >Description:
 > > All simple dtrace oneliners I tryed has the same output:
 > > 
 > > root at notebook ~ # dtrace -n 'syscall:::entry { @num[execname] =
 > > count(); }' dtrace: invalid probe specifier syscall:::entry
 > > { @num[execname] = count(); }: "/usr/lib/dtrace/io.d", line 43:
 > > operator -> cannot be applied to a forward declaration: no struct
 > > devstat definition is available
 > 
 > Did you do a:
 > kldload dtraceall
 > 
 > on the system?  Just dtrace.ko isn't enough to have dtrace work..
 > What does dtrace -l say?  If you just have dtrace.ko loaded, you'll
 > see something like:
 > # dtrace -l
 >    ID   PROVIDER            MODULE                          FUNCTION
 > NAME 1     dtrace
 > BEGIN 2
 > dtrace                                                     END 3
 > dtrace                                                     ERROR
 > 
 > if you have dtraceall.ko loaded, you should see many pages of lines..
 >