lkml.org 
[lkml]   [2018]   [Sep]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v3 2/3] x86/speculation: apply IBPB more strictly to avoid cross-process data leak
On Tue, Sep 04, 2018 at 04:42:02PM +0200, Jiri Kosina wrote:
> if (tsk && tsk->mm &&
> tsk->mm->context.ctx_id != last_ctx_id &&
> - get_dumpable(tsk->mm) != SUID_DUMP_USER)
> + ___ptrace_may_access(current, tsk, PTRACE_MODE_IBPB))
> indirect_branch_prediction_barrier();

See how the new (first) argument is 'current' and you could've just used
the old __ptrace_may_access().

\
 
 \ /
  Last update: 2018-09-05 09:53    [W:0.120 / U:0.740 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site