Date: Fri, 22 May 2009 10:00:56 +0200 From: Thomas Backman <serenity@exscape.org> To: freebsd-current@freebsd.org Subject: Re: DTrace panic while probing syscall::open (and possibly many others) Message-ID: <60173AF0-7E54-4BDD-8927-0DADA9DAD1B4@exscape.org> In-Reply-To: <44F486FA-E798-448D-BE31-F7A51EF1F612@exscape.org> References: <949B5884-5303-4EFF-AC7D-293640FFA012@exscape.org> <0C235698-3ED2-4AE9-A7D1-5DC56D8324A4@exscape.org> <200905212129.47892.mel.flynn%2Bfbsd.current@mailing.thruhere.net> <44F486FA-E798-448D-BE31-F7A51EF1F612@exscape.org>
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On May 22, 2009, at 09:31 AM, Thomas Backman wrote:
>
> ...
> dtrace: error on enabled probe ID 1 (ID 38977: syscall::open:entry):
> invalid address (0xffffff803e9afae0) in action #1 at DIF offset 28
> dtrace: error on enabled probe ID 1 (ID 38977: syscall::open:entry):
> invalid address (0xffffff803e9afae0) in action #1 at DIF offset 28
> dtrace: error on enabled probe ID 1 (ID 38977: syscall::open:entry):
> invalid address (0xffffff803e9afae0) in action #1 at DIF offset 28
>
Actually, I still get these. Bummer.
[root@chaos /usr/local/sbin]# execsnoop
UID PID PPID ARGS
0 1931 1924 /bin/sh
0 1931 1924 /bin/sh
0 1932 1931 /bin/mkdir
0 1932 1931 /bin/mkdir
dtrace: error on enabled probe ID 2 (ID 39086:
syscall::execve:return): invalid address (0xffffff803e8cfae0) in
action #8
dtrace: error on enabled probe ID 3 (ID 39086:
syscall::execve:return): invalid address (0xffffff803e8cfae0) in
action #8
0 1944 1933 mktemp
0 1944 1933 mktemp
dtrace: error on enabled probe ID 2 (ID 39086:
syscall::execve:return): invalid address (0xffffff803ea58ae0) in
action #8
dtrace: error on enabled probe ID 3 (ID 39086:
syscall::execve:return): invalid address (0xffffff803ea58ae0) in
action #8
dtrace: error on enabled probe ID 2 (ID 39086:
syscall::execve:return): invalid address (0xffffff803ea9eae0) in
action #8
dtrace: error on enabled probe ID 3 (ID 39086:
syscall::execve:return): invalid address (0xffffff803ea9eae0) in
action #8
0 1948 1947 /bin/sh
0 1948 1947 /bin/sh
0 1949 1948 vnstat
0 1949 1948 vnstat
0 1950 1933 /bin/rm
0 1950 1933 /bin/rm
0 1951 1907 /bin/sh
0 1951 1907 /bin/sh
0 1952 1951 make
0 1952 1951 make
(No idea why everything is printed twice either.)
Also, the DTrace variable "walltimestamp" seems to return "1970 Jan 1
01:00:00" (I'm in GMT+2 right now, btw) every time.
Regards,
Thomas
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