linux.git/tools/testing/selftests/x86, branch v5.8

x86/entry, selftests: Further improve user entry sanity checks

2020-07-04T17:47:25+00:00

Chasing down a Xen bug caused me to realize that the new entry sanity
checks are still fairly weak.  Add some more checks.

Signed-off-by: Andy Lutomirski 
Signed-off-by: Thomas Gleixner 
Acked-by: Peter Zijlstra (Intel) 
Link: https://lkml.kernel.org/r/881de09e786ab93ce56ee4a2437ba2c308afe7a9.1593795633.git.luto@kernel.org

selftests/x86: Consolidate and fix get/set_eflags() helpers

2020-07-01T08:00:27+00:00

There are several copies of get_eflags() and set_eflags() and they all are
buggy.  Consolidate them and fix them.  The fixes are:

Add memory clobbers.  These are probably unnecessary but they make sure
that the compiler doesn't move something past one of these calls when it
shouldn't.

Respect the redzone on x86_64.  There has no failure been observed related
to this, but it's definitely a bug.

Signed-off-by: Andy Lutomirski 
Signed-off-by: Thomas Gleixner 
Link: https://lkml.kernel.org/r/982ce58ae8dea2f1e57093ee894760e35267e751.1593191971.git.luto@kernel.org

selftests/x86/syscall_nt: Clear weird flags after each test

2020-07-01T08:00:26+00:00

Clear the weird flags before logging to improve strace output --
logging results while, say, TF is set does no one any favors.

Signed-off-by: Andy Lutomirski 
Signed-off-by: Thomas Gleixner 
Link: https://lkml.kernel.org/r/907bfa5a42d4475b8245e18b67a04b13ca51ffdb.1593191971.git.luto@kernel.org

selftests/x86/syscall_nt: Add more flag combinations

2020-07-01T08:00:26+00:00

Add EFLAGS.AC to the mix.

Signed-off-by: Andy Lutomirski 
Signed-off-by: Thomas Gleixner 
Link: https://lkml.kernel.org/r/12924e2fe2c5826568b7fc9436d85ca7f5eb1743.1593191971.git.luto@kernel.org

selftests/x86/pkeys: move selftests to arch-neutral directory

2020-06-05T02:06:26+00:00

Patch series "selftests, powerpc, x86: Memory Protection Keys", v19.

Memory protection keys enables an application to protect its address space
from inadvertent access by its own code.

This feature is now enabled on powerpc and has been available since
4.16-rc1.  The patches move the selftests to arch neutral directory and
enhance their test coverage.

Tested on powerpc64 and x86_64 (Skylake-SP).

This patch (of 24):

Move selftest files from tools/testing/selftests/x86/ to
tools/testing/selftests/vm/.

Signed-off-by: Ram Pai 
Signed-off-by: Thiago Jung Bauermann 
Signed-off-by: Sandipan Das 
Signed-off-by: Andrew Morton 
Acked-by: Ingo Molnar 
Acked-by: Dave Hansen 
Cc: Dave Hansen 
Cc: Florian Weimer 
Cc: "Desnes A. Nunes do Rosario" 
Cc: Michal Hocko 
Cc: "Aneesh Kumar K.V" 
Cc: Michal Suchanek 
Cc: Michael Ellerman 
Cc: Shuah Khan 
Link: http://lkml.kernel.org/r/14d25194c3e2e652e0047feec4487e269e76e8c9.1585646528.git.sandipan@linux.ibm.com
Signed-off-by: Linus Torvalds

Merge tag 'spdx-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx

2020-04-03T20:12:26+00:00

Pull SPDX updates from Greg KH:
 "Here are three SPDX patches for 5.7-rc1.

  One fixes up the SPDX tag for a single driver, while the other two go
  through the tree and add SPDX tags for all of the .gitignore files as
  needed.

  Nothing too complex, but you will get a merge conflict with your
  current tree, that should be trivial to handle (one file modified by
  two things, one file deleted.)

  All three of these have been in linux-next for a while, with no
  reported issues other than the merge conflict"

* tag 'spdx-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx:
  ASoC: MT6660: make spdxcheck.py happy
  .gitignore: add SPDX License Identifier
  .gitignore: remove too obvious comments

.gitignore: add SPDX License Identifier

2020-03-25T10:50:48+00:00

Add SPDX License Identifier to all .gitignore files.

Signed-off-by: Masahiro Yamada 
Signed-off-by: Greg Kroah-Hartman

selftests/x86/ptrace_syscall_32: Fix no-vDSO segfault

2020-03-20T10:28:47+00:00

If AT_SYSINFO is not present, don't try to call a NULL pointer.

Reported-by: kbuild test robot 
Signed-off-by: Andy Lutomirski 
Signed-off-by: Borislav Petkov 
Link: https://lkml.kernel.org/r/faaf688265a7e1a5b944d6f8bc0f6368158306d3.1584052409.git.luto@kernel.org

selftests/x86/vdso: Fix no-vDSO segfaults

2020-03-20T10:20:04+00:00

test_vdso would try to call a NULL pointer if the vDSO was missing.

vdso_restorer_32 hit a genuine failure: trying to use the
kernel-provided signal restorer doesn't work if the vDSO is missing.
Skip the test if the vDSO is missing, since the test adds no particular
value in that case.

Reported-by: kbuild test robot 
Signed-off-by: Andy Lutomirski 
Signed-off-by: Borislav Petkov 
Link: https://lkml.kernel.org/r/618ea7b8c55b10d08b1cb139e9a3a957934b8647.1584653439.git.luto@kernel.org

selftests/x86/single_step_syscall: Check SYSENTER directly

2019-11-26T20:53:34+00:00

We used to test SYSENTER only through the vDSO.  Test it directly
too, just in case.

Signed-off-by: Andy Lutomirski 
Cc: Borislav Petkov 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: Linus Torvalds 
Signed-off-by: Ingo Molnar