https://chromium-review.googlesource.com/#/c/chromiumos/platform2/+/754086

also note that bug for point 2 above is  bug #781384 

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform2/+/5b928431b8c4167ad92e85cbd5095a4abbeb479c

commit 5b928431b8c4167ad92e85cbd5095a4abbeb479c
Author: Douglas Anderson <dianders@chromium.org>
Date: Sat Nov 04 04:56:50 2017

crash: Fix "nknown" => "unknown" in anomaly collector

This was just a simple silly thing where the code was skipping the
first letter of the string, assuming it was a space.  Just add a
space so it's assumption is now correct.

BUG= chromium:781343 
TEST=FEATURES=test emerge-kevin crash-reporter  # while cros_workon
TEST='
  echo WARNING > /sys/kernel/debug/provoke-crash/DIRECT
  grep "" /var/spool/crash/*.kcrash
'

Change-Id: I835c0a9b3249b9d8633e7d4476927799b5bce6f7
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/754086
Reviewed-by: Mike Frysinger <vapier@chromium.org>

[modify] https://crrev.com/5b928431b8c4167ad92e85cbd5095a4abbeb479c/crash-reporter/anomaly_collector.l
[modify] https://crrev.com/5b928431b8c4167ad92e85cbd5095a4abbeb479c/crash-reporter/anomaly_collector_test.sh
[modify] https://crrev.com/5b928431b8c4167ad92e85cbd5095a4abbeb479c/crash-reporter/crash-reporter.gyp
[add] https://crrev.com/5b928431b8c4167ad92e85cbd5095a4abbeb479c/crash-reporter/TEST_WARNING_OLD_ARM64

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/kernel/+/0fd77fcb1a5e785e1f93177dd6785aaa7570908a

commit 0fd77fcb1a5e785e1f93177dd6785aaa7570908a
Author: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Sat Nov 04 04:56:44 2017

UPSTREAM: lib/bug.c: make panic_on_warn available for all architectures

Christian Borntraeger reported that panic_on_warn doesn't have any
effect on s390.

The panic_on_warn feature was introduced with 9e3961a09798 ("kernel: add
panic_on_warn").  However it did care only for the case when
WANT_WARN_ON_SLOWPATH is defined.  This is turn is only the case for
architectures which do not have an own __WARN_TAINT defined.

Other architectures which do have __WARN_TAINT defined call report_bug()
for warnings within lib/bug.c which does not call panic() in case
panic_on_warn is set.

Let's simply enable the panic_on_warn feature by adding the same code
like it was added to warn_slowpath_common() in panic.c.

This enables panic_on_warn also for arm64, parisc, powerpc, s390 and sh.

BUG= chromium:781343 
TEST=echo WARNING > /sys/kernel/debug/provoke-crash/DIRECT

Change-Id: I8fdf6490ea439e091054995367472accfb46a66c
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Prarit Bhargava <prarit@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Tested-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
(cherry picked from commit d7b85cab74edef84a9330c476478ba8cd732b6a9)
Reviewed-on: https://chromium-review.googlesource.com/754000
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>

[modify] https://crrev.com/0fd77fcb1a5e785e1f93177dd6785aaa7570908a/lib/bug.c

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/kernel/+/89660857d58cec2155474f446455c41a22fd2b50

commit 89660857d58cec2155474f446455c41a22fd2b50
Author: Josh Poimboeuf <jpoimboe@redhat.com>
Date: Sat Nov 04 04:56:46 2017

UPSTREAM: lib/bug.c: use common WARN helper

The traceoff_on_warning option doesn't have any effect on s390, powerpc,
arm64, parisc, and sh because there are two different types of WARN
implementations:

1) The above mentioned architectures treat WARN() as a special case of a
   BUG() exception.  They handle warnings in report_bug() in lib/bug.c.

2) All other architectures just call warn_slowpath_*() directly.  Their
   warnings are handled in warn_slowpath_common() in kernel/panic.c.

Support traceoff_on_warning on all architectures and prevent any future
divergence by using a single common function to emit the warning.

Also remove the '()' from '%pS()', because the parentheses look funky:

  [   45.607629] WARNING: at /root/warn_mod/warn_mod.c:17 .init_dummy+0x20/0x40 [warn_mod]()

BUG= chromium:781343 
TEST=echo WARNING > /sys/kernel/debug/provoke-crash/DIRECT

Change-Id: I3babe475d30ed2c5e16aa783a1422f3d5c599e74
Reported-by: Chunyu Hu <chuhu@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
(cherry picked from commit 2553b67a1fbe7bf202e4e8070ab0b00d3d3a06a2)
Reviewed-on: https://chromium-review.googlesource.com/754221
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>

[modify] https://crrev.com/89660857d58cec2155474f446455c41a22fd2b50/kernel/panic.c
[modify] https://crrev.com/89660857d58cec2155474f446455c41a22fd2b50/include/asm-generic/bug.h
[modify] https://crrev.com/89660857d58cec2155474f446455c41a22fd2b50/lib/bug.c

Two of the changes above should have been tagged  bug #781384  and I'll likely try to get those merged to M-63 in that bug.

The other changes is just cosmetic and there's no real value in a marge.  Calling this Fixed.