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Date:      Thu, 23 Feb 2017 21:59:31 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-amd64@FreeBSD.org
Subject:   [Bug 217138] head (e.g.) -r313864 for arm64: sh vs. jemalloc asserts: include/jemalloc/internal/tsd.h:687: Failed assertion: "tsd_booted"
Message-ID:  <bug-217138-6-N1zKsou5OJ@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-217138-6@https.bugs.freebsd.org/bugzilla/>
References:  <bug-217138-6@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D217138

--- Comment #7 from Mark Millard <markmi@dsl-only.net> ---
The following describes a reproducible sequence
in my context, unfortunately involving hours of
buildworld activity. It fails every time that I
have tried it and at the same places each time.
I give a contrast to a working context as well.

Context: doing buildworld buidlkernel on a pine64+ with
2 GiBytes of RAM. Multiple head revisions, most recently:

# uname -apKU
FreeBSD pine64 12.0-CURRENT FreeBSD 12.0-CURRENT  r313999M  arm64 aarch64
1200021 1200021

The pine64 is running what was a cross build that had
MALLOC_PRODUCTION not defined. (Unlike my usual
way of building.)

Problem: sh core dumps via failing an assert. (script core dumps
as well for other reasons for one stage but I'm focused on the
earliest failures for now: sh failures.)

The following happens when I buildworld buildkernel on the
pine64+ using:

WITH_CLANG=3D
WITH_CLANG_IS_CC=3D
WITH_CLANG_FULL=3D
WITH_CLANG_EXTRAS=3D
WITH_LLD=3D
WITH_LLDB=3D

but not when using:

WITHOUT_CLANG=3D
WITHOUT_CLANG_IS_CC=3D
WITHOUT_CLANG_FULL=3D
WITHOUT_CLANG_EXTRAS=3D
WITHOUT_LLD=3D
WITHOUT_LLDB=3D

(The rest being the same, starting after using cleanworld
in both cases.)

But note that the first failures happen long after the
those have built what they contribute to the _generic_libs
stage. (I have not yet tried isolating subsets.) Similarly
for the later 2nd stage: well after "everything" did its
llvm related activity.

I've tried the failing case under both:

2 GiBytes RAM + 3 GiBytes swap
and:
2 GiBytes RAM + 6 GiBytes swap

It made no difference and there have been no messages
about running out of swap space or other forms of resource
limitation based process killing or the like.


>From sysutils/DTraceToolkit 's /usr/local/share/dtrace-toolkit/execsnoop :

. . .
2017 Feb 22 16:37:02     0  61019  61018 make install DIRPRFX=3Dlib/libusb/=
\0
2017 Feb 22 16:37:02     0  61020  61019 sh -e\0
2017 Feb 22 16:37:02     0  61021  61019 sh -e\0
2017 Feb 22 16:37:02     0  61022  61019 sh -e\0
2017 Feb 22 16:37:02     0  61023  61020 sh /usr/src/tools/install.sh -C -o
root -g wheel -m 444 libusb.a
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/lib/\0
2017 Feb 22 16:37:02     0  61024  61021 sh /usr/src/tools/install.sh -o ro=
ot
-g wheel -m 444 /usr/src/lib/libusb/libusb-0.1.pc
/usr/src/lib/libusb/libusb-1.0.pc /usr/src/lib/libusb/libusb-2.0.pc
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/libdata/pkgconfig/\0
2017 Feb 22 16:37:02     0  61025  61022 sh /usr/src/tools/install.sh -C -o
root -g wheel -m 444 /usr/src/lib/libusb/libusb20.h
/usr/src/lib/libusb/libusb20_desc.h /usr/src/lib/libusb/usb.h
/usr/src/lib/libusb/libusb.h
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/include/\0
2017 Feb 22 16:37:02     0  61023  61020 sh /usr/src/tools/install.sh -C -o
root -g wheel -m 444 libusb.a
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/lib/\0
2017 Feb 22 16:37:02     0  61023  61020 install -p libusb.a
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/lib/\0
2017 Feb 22 16:37:02     0  61024  61021 sh /usr/src/tools/install.sh -o ro=
ot
-g wheel -m 444 /usr/src/lib/libusb/libusb-0.1.pc
/usr/src/lib/libusb/libusb-1.0.pc /usr/src/lib/libusb/libusb-2.0.pc
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/libdata/pkgconfig/\0
2017 Feb 22 16:37:02     0  61025  61022 sh /usr/src/tools/install.sh -C -o
root -g wheel -m 444 /usr/src/lib/libusb/libusb20.h
/usr/src/lib/libusb/libusb20_desc.h /usr/src/lib/libusb/usb.h
/usr/src/lib/libusb/libusb.h
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/include/\0
2017 Feb 22 16:37:02     0  61024  61021 install -p
/usr/src/lib/libusb/libusb-0.1.pc /usr/src/lib/libusb/libusb-1.0.pc
/usr/src/lib/libusb/libusb-2.0.pc
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/libdata/pkgconfig/\0
2017 Feb 22 16:37:02     0  61025  61022 install -p
/usr/src/lib/libusb/libusb20.h /usr/src/lib/libusb/libusb20_desc.h
/usr/src/lib/libusb/usb.h /usr/src/lib/libusb/libusb.h
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/include/\0
2017 Feb 22 16:37:02     0  61026  61020 sh /usr/src/tools/install.sh -s -o
root -g wheel -m 444 libusb.so.3
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/lib/\0
2017 Feb 22 16:37:02     0  61026  61020 sh /usr/src/tools/install.sh -s -o
root -g wheel -m 444 libusb.so.3
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/lib/\0
2017 Feb 22 16:37:02     0  61026  61020 install -p libusb.so.3
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/lib/\0
2017 Feb 22 16:37:02     0  61027  61020 sh /usr/src/tools/install.sh -o ro=
ot
-g wheel -m 444 libusb.so.3.debug
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/lib/debug/usr/lib/\0
2017 Feb 22 16:37:02     0  61027  61020 sh /usr/src/tools/install.sh -o ro=
ot
-g wheel -m 444 libusb.so.3.debug
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/lib/debug/usr/lib/\0
2017 Feb 22 16:37:02     0  61027  61020 install -p libusb.so.3.debug
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/lib/debug/usr/lib/\0
2017 Feb 22 16:37:02     0  61028  61020 sh /usr/src/tools/install.sh -l rs
libusb.so.3 /usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/lib/libusb.=
so\0
2017 Feb 22 16:37:02     0  61029  61028 ln -fsn libusb.so.3
/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp/usr/lib/libusb.so\0

(That last was it for the build.) That is the end of the exec
activity for the _generic_libs part of the build (and since the
build stops: the last for the build overall).

(The below ps -daux output is from some time before the problem happened
but with later, related core files listed as well.)

root   91353  0.0  0.1   6856   1500 u0  I+   10:28     0:00.02     `-- /bi=
n/sh
/root/sys_build_scripts.pine64-host/make_pine64_nodebug_clang_bootstrap-pin=
e64-host.sh
-j 4 buildworld buildkernel
root   91356  0.0  0.1   6204   1560 u0  S+   10:28     0:06.59       `--
script
/root/sys_typescripts/typescript_make_pine64_nodebug_clang_bootstrap-pine64=
-host-2017-02-22:10:28:28
env __MAKE_CONF=3D/
-rw-------  1 root  wheel  4657152 Feb 22 16:37:04 2017 script.91356.core
(from: ls -ltTU)

root   91357  0.0  0.0   4948    204  1  Ss+  10:28     0:01.87         `--
make -j 4 buildworld buildkernel
root   91373  0.0  0.1   6856   1500  1  I    10:28     0:00.01           `=
--
sh -ev
-rw-------  1 root  wheel  4702208 Feb 22 16:37:03 2017 sh.91373.core
(from: ls -ltTU)

root   91374  0.0  0.0   4948    204  1  S    10:28     0:01.69            =
 `--
make -m /usr/src/share/mk -f Makefile.inc1 TARGET=3Darm64 TARGET_ARCH=3Daar=
ch64
buildworld
root   10803  0.0  0.1   6856   1500  1  I    10:43     0:00.01=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20
`-- sh -ev
-rw-------  1 root  wheel  4702208 Feb 22 16:37:02 2017 sh.10803.core
(from: ls -ltTU)

root   10804  0.0  0.0   4948    200  1  S    10:43     3:00.18=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20
`-- make -f Makefile.inc1
DESTDIR=3D/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp -DNO_FSCHG MK_HTM=
L=3Dno
-DNO_LINT MK_MA
root   10811  0.0  0.1   6856   1500  1  I    10:43     0:00.01=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20
  `-- sh -ev
root   38075  0.0  0.0   4948    204  1  S    11:14     0:00.75=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20
    `-- make -f Makefile.inc1 _generic_libs
root   38085  0.0  0.1   6856   1500  1  I    11:14     0:00.01=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20
      `-- sh -ev
. . .

"shutdown -r now" here makes no difference to the below
when done after the reboot.

(Of course there is some llvm related build activity during the
"everything" stage below.)

Doing another buildworld buildkernel to continue the build results
in:

. . .
2017 Feb 22 18:48:46     0  51772  51454 sh -e\0
2017 Feb 22 18:48:46     0  51773  51772 sed -E s,(^| |B|`)svn,\\1svnlite,g
/usr/src/contrib/subversion/subversion/svn/svn.1\0
2017 Feb 22 18:48:46     0  51774  51454 sh -e\0
2017 Feb 22 18:48:46     0  51775  51774 gzip -cn svnlite.1\0
2017 Feb 22 18:48:48     0  51776  51454 sh -e\0
2017 Feb 22 18:48:48     0  51777  51776 \0
2017 Feb 22 18:48:48     0  51778  51777 \0
2017 Feb 22 18:48:49     0  51779  51454 sh -e\0
2017 Feb 22 18:48:49     0  51780  51779 /usr/local/aarch64-freebsd/bin/obj=
copy
--only-keep-debug svnlite.full svnlite.debug\0
2017 Feb 22 18:48:50     0  51781  51454 sh -e\0
2017 Feb 22 18:48:50     0  51782  51781 /usr/local/aarch64-freebsd/bin/obj=
copy
--strip-debug --add-gnu-debuglink=3Dsvnlite.debug svnlite.full svnlite\0

The above is the end of the "everything" exec activity
but before the buildworld_epilogue (that does not happen).
Again it is the last exec activity for the build because the
build stops.

(Again ps -daux from sometime before the failure mixed
with core file ls -ltTU information below:)

root   61122   0.0  0.1   6856   1500 u0  I+   17:13     0:00.01     `--
/bin/sh
/root/sys_build_scripts.pine64-host/make_pine64_nodebug_clang_bootstrap-pin=
e64-host.sh
-j 4 buildworld buildkernel
root   61125   0.0  0.1   6204   1560 u0  S+   17:13     0:09.56       `--
script
/root/sys_typescripts/typescript_make_pine64_nodebug_clang_bootstrap-pine64=
-host-2017-02-22:17:13:45
env __MAKE_CONF=3D
root   61126   0.0  0.0   4948    204  1  Ss+  17:13     0:02.36         `--
make -j 4 buildworld buildkernel
root   61142   0.0  0.1   6856   1500  1  I    17:13     0:00.01           =
`--
sh -ev
-rw-------  1 root  wheel  4702208 Feb 22 18:48:51 2017 sh.61142.core

root   61143   0.0  0.0   4948    204  1  S    17:13     0:02.08=20=20=20=
=20=20=20=20=20=20=20=20=20
`-- make -m /usr/src/share/mk -f Makefile.inc1 TARGET=3Darm64 TARGET_ARCH=
=3Daarch64
buildworld
root   81104   0.0  0.1   6856   1500  1  I    17:19     0:00.01=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20
`-- sh -ev
-rw-------  1 root  wheel  4702208 Feb 22 18:48:50 2017 sh.81104.core

root   81105   0.0  0.0   4948    220  1  S    17:19     0:02.57=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20
 `-- make -f Makefile.inc1
DESTDIR=3D/usr/obj/pine64_clang/arm64.aarch64/usr/src/tmp all
root   13358   0.0  0.1   6856   1500  1  I    17:49     0:00.01=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20
   |-- sh -e
. . .

(Yep: script does  not core dump for this 2nd stage context.)

A 3rd buildworld buildkernel finishes the build, with buildworld
being essentially a large no-op and then doing the buildkernel.



Context details:

# more ~/src.configs/make.conf
CFLAGS.gcc+=3D -v

(But this was not a gcc based build.)

# more ~/src.configs/src.conf.pine64-clang-bootstrap.pine64-host=20
TO_TYPE=3Daarch64
TOOLS_TO_TYPE=3D${TO_TYPE}
#
KERNCONF=3DGENERIC-NODBG
TARGET=3Darm64
.if ${.MAKE.LEVEL} =3D=3D 0
TARGET_ARCH=3D${TO_TYPE}
.export TARGET_ARCH
.endif
#
#WITH_CROSS_COMPILER=3D
WITH_SYSTEM_COMPILER=3D
#
#CPUTYPE=3Dsoft
WITH_LIBCPLUSPLUS=3D
WITHOUT_BINUTILS_BOOTSTRAP=3D
WITHOUT_ELFTOOLCHAIN_BOOTSTRAP=3D
#WITHOUT_CLANG_BOOTSTRAP=3D
WITH_CLANG=3D
WITH_CLANG_IS_CC=3D
WITH_CLANG_FULL=3D
WITH_CLANG_EXTRAS=3D
WITH_LLD=3D
WITH_LLDB=3D
#
WITH_BOOT=3D
WITHOUT_LIB32=3D
WITHOUT_LIBSOFT=3D
#
WITHOUT_GCC_BOOTSTRAP=3D
WITHOUT_GCC=3D
WITHOUT_GCC_IS_CC=3D
WITHOUT_GNUCXX=3D
#
NO_WERROR=3D
#WERROR=3D
MALLOC_PRODUCTION=3D
#
WITH_REPRODUCIBLE_BUILD=3D
WITH_DEBUG_FILES=3D
#
CROSS_BINUTILS_PREFIX=3D/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/
AS=3D/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/as
AR=3D/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/ar
LD=3D/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/ld
NM=3D/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/nm
OBJCOPY=3D/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/objcopy
OBJDUMP=3D/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/objdump
RANLIB=3D/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/ranlib
SIZE=3D/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/size
STRINGS=3D/usr/local/${TOOLS_TO_TYPE}-freebsd/bin/strings
.export AS
.export AR
.export LD
.export NM
.export OBJCOPY
.export OBJDUMP
.export RANLIB
.export SIZE
.export STRINGS


# svnlite status /usr/src/ | sort
?       /usr/src/sys/amd64/conf/GENERIC-DBG
?       /usr/src/sys/amd64/conf/GENERIC-NODBG
?       /usr/src/sys/arm/conf/BPIM3-DBG
?       /usr/src/sys/arm/conf/BPIM3-NODBG
?       /usr/src/sys/arm/conf/RPI2-DBG
?       /usr/src/sys/arm/conf/RPI2-NODBG
?       /usr/src/sys/arm64/conf/GENERIC-DBG
?       /usr/src/sys/arm64/conf/GENERIC-NODBG
?       /usr/src/sys/powerpc/conf/GENERIC64vtsc-DBG
?       /usr/src/sys/powerpc/conf/GENERIC64vtsc-NODBG
?       /usr/src/sys/powerpc/conf/GENERICvtsc-DBG
?       /usr/src/sys/powerpc/conf/GENERICvtsc-NODBG
M       /usr/src/bin/sh/jobs.c
M       /usr/src/bin/sh/miscbltin.c
M       /usr/src/contrib/llvm/lib/Target/PowerPC/PPCInstrInfo.td
M       /usr/src/contrib/llvm/tools/lld/ELF/Target.cpp
M       /usr/src/lib/csu/powerpc64/Makefile
M       /usr/src/libexec/rtld-elf/Makefile
M       /usr/src/sys/arm/arm/gic.c
M       /usr/src/sys/boot/ofw/Makefile.inc
M       /usr/src/sys/boot/powerpc/Makefile.inc
M       /usr/src/sys/boot/powerpc/kboot/Makefile
M       /usr/src/sys/boot/uboot/Makefile.inc
M       /usr/src/sys/conf/Makefile.powerpc
M       /usr/src/sys/conf/kmod.mk
M       /usr/src/sys/ddb/db_main.c
M       /usr/src/sys/ddb/db_script.c
M       /usr/src/sys/powerpc/ofw/ofw_machdep.c

The . . ./conf/*-*DBG files include the standard files
and then make adjustments to have a production
style kernel build, including the arm64 case.

Below the first two files are as they were used to isolate
forks' original lack of preserving the sp value for the
child process side when interrupts happen. (Since fixed
in head but not in stable/11 last I looked.)

# svnlite diff /usr/src/bin/sh/jobs.c /usr/src/bin/sh/miscbltin.c
/usr/src/sys/arm/arm/gic.c
Index: /usr/src/bin/sh/jobs.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- /usr/src/bin/sh/jobs.c      (revision 313999)
+++ /usr/src/bin/sh/jobs.c      (working copy)
@@ -51,6 +51,9 @@
 #include <stdlib.h>
 #include <unistd.h>

+/* JUST FOR TESTING */
+#include <stdint.h>
+
 #include "shell.h"
 #if JOBS
 #include <termios.h>
@@ -833,6 +836,13 @@
  * in a pipeline).
  */

+extern uintptr_t example_stack_address(void);
+
+uintptr_t stack_address_before_fork =3D 0;
+uintptr_t stack_address_after_fork =3D 0;
+
+pid_t pid_from_fork =3D -1;
+
 pid_t
 forkshell(struct job *jp, union node *n, int mode)
 {
@@ -845,7 +855,10 @@
        if (mode =3D=3D FORK_BG && (jp =3D=3D NULL || jp->nprocs =3D=3D 0))
                checkzombies();
        flushall();
-       pid =3D fork();
+       stack_address_before_fork =3D example_stack_address();
+       pid_from_fork =3D pid =3D fork();
+       stack_address_after_fork  =3D example_stack_address();
+       if (stack_address_after_fork !=3D stack_address_before_fork) abort(=
);
        if (pid =3D=3D -1) {
                TRACE(("Fork failed, errno=3D%d\n", errno));
                INTON;
@@ -946,7 +959,6 @@
        return pid;
 }

-
 pid_t
 vforkexecshell(struct job *jp, char **argv, char **envp, const char *path,=
 int
idx, int pip[2])
 {
Index: /usr/src/bin/sh/miscbltin.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- /usr/src/bin/sh/miscbltin.c (revision 313999)
+++ /usr/src/bin/sh/miscbltin.c (working copy)
@@ -64,6 +64,15 @@

 #undef eflag

+
+/* JUST FOR TESTING */
+uintptr_t example_stack_address(void)
+{
+    volatile uintptr_t test =3D 0;
+    return (uintptr_t)(void*)&test;
+}
+
+
 int readcmd(int, char **);
 int umaskcmd(int, char **);
 int ulimitcmd(int, char **);
Index: /usr/src/sys/arm/arm/gic.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- /usr/src/sys/arm/arm/gic.c  (revision 313999)
+++ /usr/src/sys/arm/arm/gic.c  (working copy)
@@ -672,9 +672,13 @@

        if (irq >=3D sc->nirqs) {
 #ifdef GIC_DEBUG_SPURIOUS
+#define EXPECTED_SPURIOUS_IRQ 1023
+           if (irq !=3D EXPECTED_SPURIOUS_IRQ) {
                device_printf(sc->gic_dev,
-                   "Spurious interrupt detected: last irq: %d on CPU%d\n",
+                   "Spurious interrupt %d detected of %d: last irq: %d on
CPU%d\n",
+                   irq, sc->nirqs,
                    sc->last_irq[PCPU_GET(cpuid)], PCPU_GET(cpuid));
+            }
 #endif
                return (FILTER_HANDLED);
        }
@@ -720,6 +724,16 @@
        if (irq < sc->nirqs)
                goto dispatch_irq;

+       if (irq !=3D EXPECTED_SPURIOUS_IRQ) {
+#undef EXPECTED_SPURIOUS_IRQ
+#ifdef GIC_DEBUG_SPURIOUS
+               device_printf(sc->gic_dev,
+                   "Spurious end interrupt %d detected of %d: last irq: %d=
 on
CPU%d\n",
+                   irq, sc->nirqs,
+                   sc->last_irq[PCPU_GET(cpuid)], PCPU_GET(cpuid));
+#endif
+       }
+
        return (FILTER_HANDLED);
 }


The gic.c change just avoids getting uninteresting spurious
interrupt messages on the console.

Other changes are generally tied to my powerpc64 and powerpc
investigations.

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