lkml.org 
[lkml]   [2015]   [Sep]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v12 12/21] x86/xen: Add xen_cpuid() and xen_setup_gdt() to stacktool whitelists
On 09/09/15 14:21, Josh Poimboeuf wrote:
> stacktool reports the following false positive warnings:
>
> stacktool: arch/x86/xen/enlighten.o: xen_cpuid()+0x41: can't find jump dest instruction at .text+0x108
> stacktool: arch/x86/xen/enlighten.o: xen_setup_gdt.constprop.23()+0x2e: kernel entry/exit from callable instruction
>
> The first warning is due to xen_cpuid()'s use of XEN_EMULATE_PREFIX to
> insert some fake instructions which stacktool doesn't know how to
> decode.
>
> The second warning is due to xen_setup_gdt()'s use of an lret
> instruction, which stacktool normally doesn't allow in callable
> functions. But this seems to be a valid use of the instruction.
>
> Add both functions to the stacktool whitelist.

Reviewed-by: David Vrabel <david.vrabel@citrix.com>

David


\
 
 \ /
  Last update: 2015-09-09 15:41    [W:0.279 / U:0.068 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site