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[Bug runtime/10601] New: user-space deref/registers in loc2c
- From: "fche at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 3 Sep 2009 21:05:08 -0000
- Subject: [Bug runtime/10601] New: user-space deref/registers in loc2c
- Reply-to: sourceware-bugzilla at sourceware dot org
For secure/robust memory and register access for user-space $target expressions,
the translator must parametrize loc2c to emit different calls for user-space
probes than for kernel-space ones. This is partly so that user-space $pointers
can't poke at kernel memories, and vice versa.
Related, the user-space register/memory access logic must become aware of
32-bit vs. 64-bit user-space processes on a 64-bit host. For registers,
this appears to require use of the proper utrace regset machinery instead
of poking at pt_regs.
--
Summary: user-space deref/registers in loc2c
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: runtime
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: fche at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=10601
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