https://github.com/torvalds/linux
Revision 961888b1d76d84efc66a8f5604b06ac12ac2f978 authored by Rui Wang on 18 December 2017, 08:34:10 UTC, committed by Ingo Molnar on 15 February 2018, 00:15:52 UTC
For distributions with old userspace header files, the _sigfault
structure is different. mpx-mini-test fails with the following
error:

  [root@Purley]# mpx-mini-test_64 tabletest
  XSAVE is supported by HW & OS
  XSAVE processor supported state mask: 0x2ff
  XSAVE OS supported state mask: 0x2ff
   BNDREGS: size: 64 user: 1 supervisor: 0 aligned: 0
    BNDCSR: size: 64 user: 1 supervisor: 0 aligned: 0
  starting mpx bounds table test
  ERROR: siginfo bounds do not match shadow bounds for register 0

Fix it by using the correct offset of _lower/_upper in _sigfault.
RHEL needs this patch to work.

Signed-off-by: Rui Wang <rui.y.wang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dave.hansen@linux.intel.com
Fixes: e754aedc26ef ("x86/mpx, selftests: Add MPX self test")
Link: http://lkml.kernel.org/r/1513586050-1641-1-git-send-email-rui.y.wang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
1 parent 1299ef1
History
Tip revision: 961888b1d76d84efc66a8f5604b06ac12ac2f978 authored by Rui Wang on 18 December 2017, 08:34:10 UTC
selftests/x86/mpx: Fix incorrect bounds with old _sigfault
Tip revision: 961888b
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