svn commit: r280327 - in head/sys: kern vm

Don Lewis truckman at FreeBSD.org
Sat Mar 28 02:41:47 UTC 2015 

On 21 Mar, Alan Cox wrote:
> Author: alc
> Date: Sat Mar 21 17:56:55 2015
> New Revision: 280327
> URL: https://svnweb.freebsd.org/changeset/base/280327
> 
> Log:
>   Introduce vm_object_color() and use it in mmap(2) to set the color of
>   named objects to zero before the virtual address is selected.  Previously,
>   the color setting was delayed until after the virtual address was
>   selected.  In rtld, this delay effectively prevented the mapping of a
>   shared library's code section using superpages.  Now, for example, we see
>   the first 1 MB of libc's code on armv6 mapped by a superpage after we've
>   gotten through the initial cold misses that bring the first 1 MB of code
>   into memory.  (With the page clustering that we perform on read faults,
>   this happens quickly.)
>   
>   Differential Revision:	https://reviews.freebsd.org/D2013
>   Reviewed by:	jhb, kib
>   Tested by:	Svatopluk Kraus (armv6)
>   MFC after:	6 weeks
> 
> Modified:
>   head/sys/kern/kern_exec.c
>   head/sys/vm/vm_fault.c
>   head/sys/vm/vm_mmap.c
>   head/sys/vm/vm_object.h
>   head/sys/vm/vnode_pager.c

This change appears to have partially broken package building.

I recently set up a package building machine running 11.0-CURRENT
r280642 and found that it was unable to build openjdk7 packages inside
FreeBSD 8.4 and 9.3 poudriere jails, for both i386 and amd64.

[snip]
Compiling ../generated/adfiles/ad_x86_64_gen.cpp
rm -f ad_x86_64_gen.o
c++ -D_ALLBSD_SOURCE -D_GNU_SOURCE -DAMD64 -DPRODUCT -I. -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/share/vm/prims -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/share/vm -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/share/vm/precompiled -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/cpu/x86/vm -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/os_cpu/bsd_x86/vm -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/os/bsd/vm -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/os/posix/vm -I../generated -DHOTSPOT_RELEASE_VERSION="\"24.76-b04\"" -DHOTSPOT_BUILD_TARGET="\"product\"" -DHOTSPOT_BUILD_USER="\"root\"" -DHOTSPOT_LIB_ARCH=\"amd64\" -DHOTSPOT_VM_DISTRO="\"OpenJDK\"" -O2 -pipe -fstack-protector -fno-strict-aliasing -DTARGET_OS_FAMILY_bsd -DTARGET_ARCH_x86 -DTARGET_ARCH_MODEL_x86_64 -DTARGET_OS_ARCH_bsd_x86 -DTARGET_OS_ARCH_MODEL_bsd_x86_64 -DTARGET_COMPILER_gcc -DCOMPILER2 -DCOMPILER1  -fno!
 -rtti -fno-exceptions -pthread -fcheck-new -m64 -pipe -DTARGET_OS_FAMILY_bsd -DTARGET_ARCH_x86 -DTARGET_ARCH_MODEL_x86_64 -DTARGET_OS_ARCH_bsd_x86 -DTARGET_OS_ARCH_MODEL_bsd_x86_64 -DTARGET_COMPILER_gcc -DCOMPILER2 -DCOMPILER1 -fPIC -fno-rtti -fno-exceptions -pthread -fcheck-new -m64 -pipe -O3 -fno-strict-aliasing -DVM_LITTLE_ENDIAN -D_LP64=1 -fno-omit-frame-pointer -DINCLUDE_TRACE=1  -Wpointer-arith -Wconversion -Wsign-compare    -c  -fpch-deps -MMD -MP -MF ../generated/dependencies/ad_x86_64_format.o.d -o ad_x86_64_format.o ../generated/adfiles/ad_x86_64_format.cpp 
c++ -D_ALLBSD_SOURCE -D_GNU_SOURCE -DAMD64 -DPRODUCT -I. -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/share/vm/prims -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/share/vm -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/share/vm/precompiled -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/cpu/x86/vm -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/os_cpu/bsd_x86/vm -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/os/bsd/vm -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/os/posix/vm -I../generated -DHOTSPOT_RELEASE_VERSION="\"24.76-b04\"" -DHOTSPOT_BUILD_TARGET="\"product\"" -DHOTSPOT_BUILD_USER="\"root\"" -DHOTSPOT_LIB_ARCH=\"amd64\" -DHOTSPOT_VM_DISTRO="\"OpenJDK\"" -O2 -pipe -fstack-protector -fno-strict-aliasing -DTARGET_OS_FAMILY_bsd -DTARGET_ARCH_x86 -DTARGET_ARCH_MODEL_x86_64 -DTARGET_OS_ARCH_bsd_x86 -DTARGET_OS_ARCH_MODEL_bsd_x86_64 -DTARGET_COMPILER_gcc -DCOMPILER2 -DCOMPILER1  -fno!
 -rtti -fno-exceptions -pthread -fcheck-new -m64 -pipe -DTARGET_OS_FAMILY_bsd -DTARGET_ARCH_x86 -DTARGET_ARCH_MODEL_x86_64 -DTARGET_OS_ARCH_bsd_x86 -DTARGET_OS_ARCH_MODEL_bsd_x86_64 -DTARGET_COMPILER_gcc -DCOMPILER2 -DCOMPILER1 -fPIC -fno-rtti -fno-exceptions -pthread -fcheck-new -m64 -pipe -O3 -fno-strict-aliasing -DVM_LITTLE_ENDIAN -D_LP64=1 -fno-omit-frame-pointer -DINCLUDE_TRACE=1  -Wpointer-arith -Wconversion -Wsign-compare    -c  -fpch-deps -MMD -MP -MF ../generated/dependencies/ad_x86_64_gen.o.d -o ad_x86_64_gen.o ../generated/adfiles/ad_x86_64_gen.cpp 
Compiling ../generated/adfiles/ad_x86_64_misc.cpp
rm -f ad_x86_64_misc.o
c++ -D_ALLBSD_SOURCE -D_GNU_SOURCE -DAMD64 -DPRODUCT -I. -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/share/vm/prims -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/share/vm -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/share/vm/precompiled -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/cpu/x86/vm -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/os_cpu/bsd_x86/vm -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/os/bsd/vm -I/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/os/posix/vm -I../generated -DHOTSPOT_RELEASE_VERSION="\"24.76-b04\"" -DHOTSPOT_BUILD_TARGET="\"product\"" -DHOTSPOT_BUILD_USER="\"root\"" -DHOTSPOT_LIB_ARCH=\"amd64\" -DHOTSPOT_VM_DISTRO="\"OpenJDK\"" -O2 -pipe -fstack-protector -fno-strict-aliasing -DTARGET_OS_FAMILY_bsd -DTARGET_ARCH_x86 -DTARGET_ARCH_MODEL_x86_64 -DTARGET_OS_ARCH_bsd_x86 -DTARGET_OS_ARCH_MODEL_bsd_x86_64 -DTARGET_COMPILER_gcc -DCOMPILER2 -DCOMPILER1  -fno!
 -rtti -fno-exceptions -pthread -fcheck-new -m64 -pipe -DTARGET_OS_FAMILY_bsd -DTARGET_ARCH_x86 -DTARGET_ARCH_MODEL_x86_64 -DTARGET_OS_ARCH_bsd_x86 -DTARGET_OS_ARCH_MODEL_bsd_x86_64 -DTARGET_COMPILER_gcc -DCOMPILER2 -DCOMPILER1 -fPIC -fno-rtti -fno-exceptions -pthread -fcheck-new -m64 -pipe -O3 -fno-strict-aliasing -DVM_LITTLE_ENDIAN -D_LP64=1 -fno-omit-frame-pointer -DINCLUDE_TRACE=1  -Wpointer-arith -Wconversion -Wsign-compare    -c  -fpch-deps -MMD -MP -MF ../generated/dependencies/ad_x86_64_misc.o.d -o ad_x86_64_misc.o ../generated/adfiles/ad_x86_64_misc.cpp 
/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/share/vm/compiler/abstractCompiler.cpp:1: fatal error: had to relocate PCH
compilation terminated.
/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/src/share/vm/utilities/accessFlags.cpp:1: fatal error: had to relocate PCH
compilation terminated.
/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/make/bsd/makefiles/rules.make:149: recipe for target 'abstractCompiler.o' failed
gmake[6]: *** [abstractCompiler.o] Error 1
gmake[6]: *** Waiting for unfinished jobs....
../generated/adfiles/ad_x86_64.cpp:1: fatal error: had to relocate PCH
compilation terminated.
../generated/adfiles/ad_x86_64_clone.cpp:1: fatal error: had to relocate PCH
compilation terminated.
/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/make/bsd/makefiles/rules.make:149: recipe for target 'accessFlags.o' failed
gmake[6]: *** [accessFlags.o] Error 1
/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/make/bsd/makefiles/rules.make:149: recipe for target 'ad_x86_64_clone.o' failed
gmake[6]: *** [ad_x86_64_clone.o] Error 1
/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/make/bsd/makefiles/rules.make:149: recipe for target 'ad_x86_64.o' failed
gmake[6]: *** [ad_x86_64.o] Error 1
../generated/adfiles/ad_x86_64_expand.cpp:1: fatal error: had to relocate PCH
compilation terminated.
/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/make/bsd/makefiles/rules.make:149: recipe for target 'ad_x86_64_expand.o' failed
gmake[6]: *** [ad_x86_64_expand.o] Error 1
../generated/adfiles/ad_x86_64_gen.cpp:1: fatal error: had to relocate PCH
compilation terminated.
../generated/adfiles/ad_x86_64_misc.cpp:1: fatal error: had to relocate PCH
compilation terminated.
/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/make/bsd/makefiles/rules.make:149: recipe for target 'ad_x86_64_gen.o' failed
gmake[6]: *** [ad_x86_64_gen.o] Error 1
/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/make/bsd/makefiles/rules.make:149: recipe for target 'ad_x86_64_misc.o' failed
gmake[6]: *** [ad_x86_64_misc.o] Error 1
../generated/adfiles/ad_x86_64_format.cpp:1: fatal error: had to relocate PCH
compilation terminated.
/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/make/bsd/makefiles/rules.make:149: recipe for target 'ad_x86_64_format.o' failed
gmake[6]: *** [ad_x86_64_format.o] Error 1
gmake[6]: Leaving directory '/wrkdirs/usr/ports/java/openjdk7/work/openjdk/build/bsd-amd64/hotspot/outputdir/bsd_amd64_compiler2/product'
/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/make/bsd/makefiles/top.make:128: recipe for target 'the_vm' failed
gmake[5]: *** [the_vm] Error 2
gmake[5]: Leaving directory '/wrkdirs/usr/ports/java/openjdk7/work/openjdk/build/bsd-amd64/hotspot/outputdir/bsd_amd64_compiler2/product'
/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/make/bsd/Makefile:292: recipe for target 'product' failed
gmake[4]: *** [product] Error 2
gmake[4]: Leaving directory '/wrkdirs/usr/ports/java/openjdk7/work/openjdk/build/bsd-amd64/hotspot/outputdir'
Makefile:191: recipe for target 'generic_build2' failed
gmake[3]: *** [generic_build2] Error 2
gmake[3]: Leaving directory '/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/make'
Makefile:151: recipe for target 'product' failed
gmake[2]: *** [product] Error 2
gmake[2]: Leaving directory '/wrkdirs/usr/ports/java/openjdk7/work/openjdk/hotspot/make'
make/hotspot-rules.gmk:111: recipe for target 'hotspot-build' failed
gmake[1]: *** [hotspot-build] Error 2
gmake[1]: Leaving directory '/wrkdirs/usr/ports/java/openjdk7/work/openjdk'
Makefile:251: recipe for target 'build_product_image' failed
gmake: *** [build_product_image] Error 2
===> Compilation failed unexpectedly.

I was not seeing this problem on my older package builder running
10.1-STABLE.  Since this problem has not shown up on the FreeBSD package
building cluster, I got suspicious that the change was quite recent.

This old gcc bug report:
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=14940> led me to suspect
mmap().

The old gcc source file /usr/src/contrib/gcc/ggc-common.c does a couple
of mmap() calls.   Tne first is in mmap_gt_pch_get_address() where a
NULL first argument is used.  The address that gets returned is stashed
away and the region is unmapped.  Then a later call in
mmap_gt_pch_use_address() passes this saved  address to mmap() as a
hint.  It expects the mapped region to get mapped to the same base
address.  If this does not happen, the above error is the result.

If I go back to kernel source r280326, which immediately preceeds the
above commit, I am able to successfully build openjdk7.

I recommend that any machines in the ports cluster being used to build
packages for FreeBSD 8 and 9 avoid upgrading past r280326 until this
issue is resolved.  I have not observed any problems building packages
for FreeBSD 10 and 11.

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