Messages in this thread | | | Date | Tue, 14 Jul 2015 16:11:49 -0500 | From | Josh Poimboeuf <> | Subject | Re: [PATCH v7 2/4] x86/stackvalidate: Compile-time stack validation |
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On Tue, Jul 14, 2015 at 10:57:38PM +0200, Peter Zijlstra wrote: > On Tue, Jul 14, 2015 at 12:14:08PM -0500, Josh Poimboeuf wrote: > > This adds a CONFIG_STACK_VALIDATION option which enables a host tool > > named stackvalidate which runs at compile time. It analyzes every .o > > file and ensures the validity of its stack metadata. It enforces a set > > of rules on asm code and C inline assembly code so that stack traces can > > be reliable. > > > > Currently it checks frame pointer usage. I plan to add DWARF CFI > > validation as well. > > Validation or Annotation, as in the generation of DWARF CFI info?
My current thinking is I'll do both:
- CFI generation for asm code - CFI validation of C code (and possibly asm code too)
It's TBD whether the generation will be done by this tool or by a separate tool.
-- Josh
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