* [Bug translator/9775] New: stap must throw a warning if a script probes a __user variable
@ 2009-01-22 11:55 prerna at linux dot vnet dot ibm dot com
2009-01-22 13:04 ` [Bug translator/9775] " fche at redhat dot com
2009-02-26 8:09 ` fche at redhat dot com
0 siblings, 2 replies; 3+ messages in thread
From: prerna at linux dot vnet dot ibm dot com @ 2009-01-22 11:55 UTC (permalink / raw)
To: systemtap
It'd be good to have the translator throw a warning if a script probes a __user
variable, such as :
stap -vve 'probe kernel.function("sys_open"){printf("\n filename %p ",$filename)}'
This feature would be particularly handy while probing char*-- It could be
extended to directly invoke the user_string / kernel_string functions, as the
case would be.
I'm not sure how DWARF would distinguish __user variables
--
Summary: stap must throw a warning if a script probes a __user
variable
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: translator
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: prerna at linux dot vnet dot ibm dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=9775
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* [Bug translator/9775] stap must throw a warning if a script probes a __user variable
2009-01-22 11:55 [Bug translator/9775] New: stap must throw a warning if a script probes a __user variable prerna at linux dot vnet dot ibm dot com
@ 2009-01-22 13:04 ` fche at redhat dot com
2009-02-26 8:09 ` fche at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: fche at redhat dot com @ 2009-01-22 13:04 UTC (permalink / raw)
To: systemtap
------- Additional Comments From fche at redhat dot com 2009-01-22 12:06 -------
Unfortunately, the __user designation is not represented at all to the
compiler, thus nor in DWARF. See also <sources.redhat.com/PR1187>.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
http://sourceware.org/bugzilla/show_bug.cgi?id=9775
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* [Bug translator/9775] stap must throw a warning if a script probes a __user variable
2009-01-22 11:55 [Bug translator/9775] New: stap must throw a warning if a script probes a __user variable prerna at linux dot vnet dot ibm dot com
2009-01-22 13:04 ` [Bug translator/9775] " fche at redhat dot com
@ 2009-02-26 8:09 ` fche at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: fche at redhat dot com @ 2009-02-26 8:09 UTC (permalink / raw)
To: systemtap
------- Additional Comments From fche at redhat dot com 2009-02-26 07:58 -------
CANTFIX except perhaps with source code parsing
--
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution| |WONTFIX
http://sourceware.org/bugzilla/show_bug.cgi?id=9775
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2009-01-22 11:55 [Bug translator/9775] New: stap must throw a warning if a script probes a __user variable prerna at linux dot vnet dot ibm dot com
2009-01-22 13:04 ` [Bug translator/9775] " fche at redhat dot com
2009-02-26 8:09 ` fche at redhat dot com
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