This patch fixes the whitespace errors reported by
'rpmlint' or 'fedpkg lint' when they are run on kexec-tools srpm:
kexec-tools.spec:242: W: mixed-use-of-spaces-and-tabs (spaces: line 107,
tab: line 242)
Signed-off-by: Bhupesh Sharma <bhsharma@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
We met a problem that the kdump emergency service failed to
start when the target dump timeout(we passed "rd.timeout=30"
to kdump), it reported "Transaction is destructive" messages:
[ TIME ] Timed out waiting for device dev-mapper-fedora\x2droot.device.
[DEPEND] Dependency failed for Initrd Root Device.
[ SKIP ] Ordering cycle found, skipping System Initialization
[DEPEND] Dependency failed for /sysroot.
[DEPEND] Dependency failed for Initrd Root File System.
[DEPEND] Dependency failed for Reload Configuration from the Real Root.
[ SKIP ] Ordering cycle found, skipping System Initialization
[ SKIP ] Ordering cycle found, skipping Initrd Default Target
[DEPEND] Dependency failed for File System Check on /dev/mapper/fedora-root.
[ OK ] Reached target Initrd File Systems.
[ OK ] Stopped dracut pre-udev hook.
[ OK ] Stopped dracut cmdline hook.
Starting Setup Virtual Console...
Starting Kdump Emergency...
[ OK ] Reached target Initrd Default Target.
[ OK ] Stopped dracut initqueue hook.
Failed to start kdump-error-handler.service: Transaction is destructive.
See system logs and 'systemctl status kdump-error-handler.service' for details.
[FAILED] Failed to start Kdump Emergency.
See 'systemctl status emergency.service' for details.
[DEPEND] Dependency failed for Emergency Mode.
This is because in case of root failure, initrd-root-fs.target
will trigger systemd emergency target which requires the systemd
emergency service actually is kdump-emergency.service, then our
kdump-emergency.service starts kdump-error-handler.service with
"systemctl isolate"(see 99kdumpbase/kdump-emergency.service, we
replace systemd's with this one under kdump).
This will lead to systemd two contradictable jobs queued as an
atomic transaction:
job 1) the emergency service gets started by initrd-root-fs.target
job 2) the emergency service gets stopped due to "systemctl isolate"
thereby throwing "Transaction is destructive".
In order to solve it, we can utilize "IgnoreOnIsolate=yes" for both
kdump-emergency.service and kdump-emergency.target. Unit with attribute
"IgnoreOnIsolate=yes" won't be stopped when isolating another unit,
they can keep going as expected in case be triggered by any failure.
We add kdump-emergency.target dedicated to kdump the similar way
as did for kdump-emergency.service(i.e. will replace systemd's
emergency.target with kdump-emergency.target under kdump), and
adds "IgnoreOnIsolate=yes" into both of them.
Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Acked-by: Pratyush Anand <panand@redhat.com>
[bhe: improve the patch log about IgnoreOnIsolate="]
Patches have been taken from kexec-tools and makedumpfile to fix issue
with `makedumpfile --mem-usage /proc/kcore`.
Two of the patches is from kexec-tools and rest are from makedumpfile.
All the patches have been acked upstream and applies without conflict.
Kexec-tools patches:
(kexec-tools-2.0.14-x86-x86_64-Fix-format-warning-with-die.patch), which
fixes koji build issue.
kexec-tools-2.0.14-build_mem_phdrs-check-if-p_paddr-is-invalid.patch fixes
the regresssion caused by kernel /proc/kcore fix to use -1 as default value
of p_paddr for pt_loads. Without his patch kexec -p will fail with latest
kernel.
Other makedumpfile patches are backported to support --mem-usage while
kernel kaslr being enabled. Details please see the patch log of the individual
patches.
All the patches are backport of upstream commits.
Patches has been tested with kernel 4.11.0-0.rc1.git0.1.fc26.x86_64.
# makedumpfile --mem-usage /proc/kcore -f
The kernel version is not supported.
The makedumpfile operation may be incomplete.
TYPE PAGES EXCLUDABLE DESCRIPTION
----------------------------------------------------------------------
ZERO 1960 yes Pages filled
with zero
NON_PRI_CACHE 22850 yes Cache pages
without private flag
PRI_CACHE 1517 yes Cache pages with
private flag
USER 32522 yes User process
pages
FREE 1898981 yes Free pages
KERN_DATA 78721 no Dumpable kernel
data
page size: 4096
Total pages on system: 2036551
Total size on system: 8341712896 Byte
We won't need to pass -f once fedora kernel is rebased with v4.12.
Signed-off-by: Pratyush Anand <panand@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Resolves: bz1399436
Since currently crashkernel= will be handled in kdump anaconda addon
we can safely remove rhcrashkernel-param callback.
Signed-off-by: Tong Li <tonli@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Backport upstream kexec-tools commit for correct kaslr page_offset value
commit 9f62cbddddfc93d78d9aafbddf3e1208cb242f7b
Author: Thomas Garnier <thgarnie@google.com>
Date: Tue Sep 13 15:10:05 2016 +0800
kexec/arch/i386: Add support for KASLR memory randomization
Multiple changes were made on KASLR (right now in linux-next). One of
them is randomizing the virtual address of the physical mapping, vmalloc
and vmemmap memory sections. It breaks kdump ability to read physical
memory.
This change identifies if KASLR memories randomization is used by
checking if the page_offset_base variable exists. It search for the
correct PAGE_OFFSET value by looking at the loaded memory section and
find the lowest aligned on PUD (the randomization level).
Related commits on linux-next:
- 0483e1fa6e09d4948272680f691dccb1edb9677f: Base for randomization
- 021182e52fe01c1f7b126f97fd6ba048dc4234fd: Enable for PAGE_OFFSET
Signed-off-by: Thomas Garnier <thgarnie@google.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Dave Young <dyoung@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
This is a short document about how to setup kdump on live images. All
steps were tested on Fedora 25 Alpha LiveCD and saved vmcore captured
by kdump to a USB stick successfully.
Signed-off-by: Tong Li <tonli@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
V1 of the KASLR patch which was backported in 2.0.13-6 had wrong
calculation for page_offset. This patch takes the correct difference.
Signed-off-by: Pratyush Anand <panand@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Fix Bug 925630 - kexec-tools: support for arm64
https://bugzilla.redhat.com/show_bug.cgi?id=925630
involves three things:
1. back porting upstream code to enable the function of kexec-tools on arm64
patchset backported from upstream:
commit abdfe97736f89d9bc73662b9134604b0229a599e
commit 522df5f7217fda01ece3f6ac3e9987b0320c2bb0
commit 217bcc00c9309416a6c6cd0584196559d28a9259
2. fix the arm related building issue by using autoreconf in spec file
3. patches to fix the issue of higher version gcc used by koji (not upstrem yet,
and the corresponding fix in kernel side is in other package)
kexec-tools-2.0.13-arm64-Add-support-for-additional-relocations-in-the-kexec-purgatory-code.patch
kexec-tools-2.0.13-arm64-Add-support-of-R_AARCH64_PREL32-relocation-in-.patch
[panand: apply patches in 3 of above paragraph]
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Acked-by: Pratyush Anand <panand@redhat.com>
Since in Fedora 25 kernel kaslr is enabled (x86) but makedumpfile can not save
a correct vmcore, so it means kdump default setup will not work.
Pratyush posted a patch series to upstream which can fix the issue. Let's merge them in F25, will get the normal fixes after it being merged in upstream, we hopefully can rebase soon in rawhide.
This is an urgent fix for F25 since F25 freeze is this week.
Signed-off-by: Dave Young <dyoung@redhat.com>
Acked-by: Pratyush Anand <panand@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Fedora dracut-network version >= 044-117 must be installed to work with
this set of kexec-tools patches. Therefore adding dependency for them.
Acked-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Fedora dracut version >= 044-75 must be installed to work with this set of
kexec-tools patches. Therefore adding dependency for them.
Signed-off-by: Pratyush Anand <panand@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Use our own code to get system total memory from /proc/meminfo because the
callback to pyanaconda sometimes cause installation hangs.
Signed-off-by: Dave Young <dyoung@redhat.com>
Fedora bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1310495
kexec kernel hangs in ppc64le test. It is caused by kexec does not support
abi v2 properly.
Backport upstream patches below fixes the issue:
There is no code conflicts.
commit 3debb8cf3272216119cb2e59a4963ce3c18fe8e3
Author: Alan Modra <amodra@gmail.com>
Date: Fri Feb 26 18:06:15 2016 +1100
Properly align powerpc64 .toc
gcc leaves .toc byte aligned, relying on the linker to align the section.
* kexec/arch/ppc64/kexec-elf-rel-ppc64.c (machine_verify_elf_rel):
Fudge alignment of .toc section.
Signed-off-by: Alan Modra <amodra@gmail.com>
Signed-off-by: Anton Blanchard <anton@samba.org>
Tested-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
commit 1e423dc297d10eb7ff25c829d2856ef12fc81d77
Author: Anton Blanchard <anton@samba.org>
Date: Fri Feb 26 18:04:16 2016 +1100
ppc64: purgatory: Handle local symbols in ELF ABIv2
The PowerPC64 ELF ABIv2 has the concept of global and local symbols
and information on this is encoded in sym->st_other. When doing a
R_PPC64_REL24 branch we want to hit the local entry point, so adjust
it as necessary.
Signed-off-by: Anton Blanchard <anton@samba.org>
Tested-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
commit 4a2ae3a39c64dc43e9d094be9541253234ff4822
Author: Anton Blanchard <anton@samba.org>
Date: Fri Feb 26 18:03:11 2016 +1100
Pass struct mem_sym into machine_apply_elf_rel()
On PowerPC64 ABIv2 we need to look at the symbol to determine
if it has a local entry point. Pass struct mem_sym into
machine_apply_elf_rel() so we can.
Signed-off-by: Anton Blanchard <anton@samba.org>
Tested-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Dave Young <dyoung@redhat.com>
Acked-by: Xunlei Pang <xlpang@redhat.com>
Pulled below commit from Martin Kolman:
commit 0c68135bd14788bc6b3f7f901eb2d2cb8ba76f79
Author: Martin Kolman <martin.kolman@gmail.com>
Date: Mon Sep 7 14:46:42 2015 +0200
Don't put options after the %end of the %addon section
Otherwise the installation describing kickstart will not be valid.
This can resulting in various issues such, as Initial Setup refusing
to run due to invalid kickstart file.
kdumpctl is useful sometimes when users want to debug or setup ssh key
authentication. So add a man page for it.
Signed-off-by: Dangyi Liu <dliu@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Reviewed-by: Pratyush Anand <panand@redhat.com>
Moving isys.total_memory() call to class method to avoid installation hangs.
It is possible because totoal_memory will call log.info which need log lock.
but some loging function need import gettext module which need import lock.
Thus deadlock could happen.
Moved isys.total_memory callback to class method instead.
Updated kdump addon icon again, Máirín Duffy designed a better icon,
it shows a little blip in a heart beat with a magnifying class examining
it, it uses components of the gnome-symbolic-theme so it would match the
other icons in the hub.
Upstream tree: https://code.google.com/p/eppic/
There's below changes vs previous version:
1) fix compile issues with gdb 7.6
2) fix compile warnings
3) Support for ARM64
Tested by Pratyush.
Signed-off-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Pratyush Anand <panand@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Koji build add extra cflags automaticlly, this cause wrong kexec purgatory
Pre Peter Robinson's suggestion, add below in spec file:
%undefine _hardened_build
Also removes extra -FPIC ldflags since there's no such options in upstream makedumpfile.
Resolves: bz1236456
Signed-off-by: Dave Young <dyoung@redhat.com>
Update kdump icon again, Xiaoxue created a new one with different color
so that we have similar color theme with other components.
Also add kdump.svg to rpm %files section
Otherwise rpmbuild will not package it in rpm
Beginning from f23 program hardening become the defaults for all packages.
Details can be checked from below link:
https://fedoraproject.org/wiki/Changes/Harden_All_Packages
Adding this to makedumpfile CFLAGS, otherwise makedumpfile building will
fail on koji.
Signed-off-by: Baoquan He <bhe@redhat.com>
I forgot to add kdump.sysconfig.ppc64le to "Source" directive to
kexec-tools.spec. And on ppc64le, the default kdump.sysconfig will be
installed to /etc/sysconfig/kdump. Now fix it.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Remove this package and put eppic_makedumpfile.so and its sample
scripts in kexec-tools package.
makedumpfile does dlopen() on eppic_makedumpfile.so and that does not
enforce any choice. One could either ship it in kexec-tools package or
in a subpackage. Both will work.
The real reason was that code for eppic_makedumpfile.so
(extension_eppic.c) and some eppic scripts are in upstream makedumpfile
project. And that project is distributed as part of kexec-tools package.
Now breaking down that makedumpfile in two parts and shipping all
eppic specific bits in a separate subpackage was creating confusion
everytime we did some changes.
So to avoid that confusion and to keep all of the makedumpfile related
bits in a single package, this change is being done.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
kexec-tools expects "powerpc64le" to pass to configure.ac, while we
passed ppc64le. Otherwise the build fails. Now fix it like we did for
ppc64.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Upstream makedumpfile contains some sample eppic scripts for reference.
Now pull the whole scripts directory into kexec-tools-eppic package.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Backport the following commit from kexec-tools upstream:
commit 45b33eb
Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Date: Fri Jul 25 17:07:49 2014 +0200
ppc64/kdump: Fix ELF header endianess
The ELF header created among the loading of the kdump kernel should be
flagged using the current endianess and not always as big endian.
Without this patch the data exposed in /proc/vmcore are not readable when
running in LE mode.
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
This is part of the work to enable ppc64le.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Backport the following commit from upstream kexec-tools:
commit 335bad7
Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Date: Tue Jul 22 18:22:28 2014 +0200
kexec/ppc64: disabling exception handling when building the purgatory
Some Linux distributions would like to turn on the GCC exception handling
by default. As this option introduces symbols in the built code that are
defined in a separate shared library, this is not a good idea to have such
an option activated when building the purgatory.
This patch forces the exception handling to be turned off when building the
purgatory on ppc64 BE and LE.
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
This is part of the work to enable ppc64le.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Backport the following commit from upstream kexec-tools:
commit 2ca2203
Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Date: Mon Jun 16 14:42:43 2014 +0200
kexec/ppc64: move to device tree version 17
Kernel commit e6a6928c3ea1d0195ed75a091e345696b916c09b changed the way the
device tree is processed in the kernel. Now version 2 is no more supported.
This patch move the version of the device tree generated in ppc64
environment from 2 to 17, allowing to kexec kernel 3.16.
In addition, automates the define of NEED_STRUCTURE_BLOCK_EXTRA_PAD which
should not be set for DT version 16 and above.
Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
This is part of the work to enable ppc64le.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This is a back port from upstream.
commit 046d1755d2bd723a11a180c265e61a884990712e
Author: Vivek Goyal <vgoyal@redhat.com>
Date: Mon Aug 18 11:22:32 2014 -0400
kexec: Provide an option to use new kexec system call
Hi,
This is v2 of the patch. Since v1, I moved syscall implemented check littler
earlier in the function as per the feedback.
Now a new kexec syscall (kexec_file_load()) has been merged in upstream
kernel. This system call takes file descriptors of kernel and initramfs
as input (as opposed to list of segments to be loaded). This new system
call allows for signature verification of the kernel being loaded.
One use of signature verification of kernel is secureboot systems where
we want to allow kexec into a kernel only if it is validly signed by
a key system trusts.
This patch provides and option --kexec-file-syscall (-s), to force use of
new system call for kexec. Default is to continue to use old syscall.
Currently only bzImage64 on x86_64 can be loaded using this system call.
As kernel adds support for more arches and for more image types, kexec-tools
can be modified accordingly.
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Since we have added kdump anaconda addon, thus removing firstboot module
User can setup kdump in anaconda install phase, and change the kdump.conf
details in s-c-kdump
Delete the firstboot po files as well.
Signed-off-by: Dave Young <dyoung@redhat.com>
Resolves: rhbz#1131169
Zbigniew (systemd developer) pointed out that our udev rules should
install to /usr/lib/ not /etc. Because /etc is supposed to be used by
sysadmins only and package should install by default into /usr/lib.
As advised here:
http://www.freedesktop.org/software/systemd/man/udev.html#Rules%20Files
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This patch introduce a new kdump-capture.service which is used to run
kdump.sh.
kdump-capture.service has OnFailure=emergency.target and
OnFailureIsolate=yes set. When kdump.sh fails, the kdump emergency
service will be triggered and enter the error handling path.
In 2nd kernel, the default target for systemd is initrd.target, so we
put kdump-capture.service in initrd.target.wants/ and by that, system
will start kdump-capture as part of the boot process.
kdump.sh used to run in dracut-pre-pivot hook. Now kdump-capture.service
is placed after dracut-pre-pivot.service and other dependencies are all
copied from dracut-pre-pivot.service. So the start point of
kdump.sh will be almost the same as it used to be.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Now upon failure kdump script might not be called at all and it might
not be able to execute default action. It results in a hang.
Because we disable emergency shell and rely on kdump.sh being invoked
through dracut-pre-pivot hook. But it might happen that we never call
into dracut-pre-pivot hook because certain systemd targets could not
reach due to failure in their dependencies. In those cases error
handling code does not run and system hangs. For example:
sysroot-var-crash.mount --> initrd-root-fs.target --> initrd.target \
--> dracut-pre-pivot.service --> kdump.sh
If /sysroot/var/crash mount fails, initrd-root-fs.target will not be
reached. And then initrd.target will not be reached,
dracut-pre-pivot.service wouldn't run. Finally kdump.sh wouldn't run.
To solve this problem, we need to separate the error handling code from
dracut-pre-pivot hook, and every time when a failure shows up, the
separated code can be called by the emergency service.
By default systemd provides an emergency service which will drop us into
shell every time upon a critical failure. It's very convenient for us to
re-use the framework of systemd emergency, because we don't have to
touch the other parts of systemd. We can use our own script instead of
the default one.
This new scheme will overwrite emergency shell and replace with kdump
error handling code. And this code will do the error handling as needed.
Now, we will not rely on dracut-pre-pivot hook running always. Instead
whenever error happens and it is serious enough that emergency shell
needed to run, now kdump error handler will run.
dracut-emergency is also replaced by kdump error handler and it's
enabled again all the way down. So all the failure (including systemd
and dracut) in 2nd kernel could be captured, and trigger kdump error
handler.
dracut-initqueue is a special case, which calls "systemctl start
emergency" directly, not via "OnFailure=emergency". In case of failure,
emergency is started, but not in a isolation mode, which means
dracut-initqueue is still running. On the other hand, emergency will
call dracut-initqueue again when default action is dump_to_rootfs.
systemd would block on the last dracut-initqueue, waiting for the first
instance to exit, which leaves us hang. It looks like the following:
dracut-initqueue (running)
--> call dracut-emergency:
--> dracut-emergency (running)
--> kdump-error-handler.sh (running)
--> call dracut-initqueue:
--> blocking and waiting for the original instance to exit.
To fix this, I'd like to introduce a wrapper emergency service. This
emegency service will replace both the systemd and dracut emergency. And
this service does nothing but to isolate to real kdump error handler
service:
dracut-initqueue (running)
--> call dracut-emergency:
--> dracut-emergency isolate to kdump-error-handler.service
--> dracut-emergency and dracut-initqueue will both be stopped
and kdump-error-handler.service will run kdump-error-handler.sh.
In a normal failure case, this still works:
foo.service fails
--> trigger emergency.service
--> emergency.service isolates to kdump-error-handler.service
--> kdump-error-handler.service will run kdump-error-handler.sh
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
Extract functions from kdump.sh, and construct kdump-lib-initramfs.sh as
kdump common functions/varaibles library.
kdump-lib-initramfs.sh will include kdump-lib.sh, because it will use
the functions from there. IOW, kdump-lib-initramfs.sh will be a superset
of kdump-lib.sh
So after this cleanup:
- scripts running in 1st kernel only have to include kdump-lib.sh
- scripts running in 2nd kernel only have to include kdump-lib-initramfs.sh
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
This is a backport of the following upstream commit.
commit 0b732828091a545185ad13d0b2e6800600788d61
Author: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Date: Tue Jun 10 13:57:29 2014 +0900
[PATCH 3/3] Stop maximizing the bitmap buffer to reduce the risk of OOM.
We tried to maximize the bitmap buffer to get the best performance,
but the performance degradation caused by multi-cycle processing
looks very small according to the benchmark on 2TB memory:
https://lkml.org/lkml/2013/3/26/914
This result means we don't need to make an effort to maximize the
bitmap buffer, it will just increase the risk of OOM.
This patch sets a small fixed value (4MB) as a safety limit,
it may be safer and enough in most cases.
Signed-off-by: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This is a backport of the following upstream commit.
commit 2648a8f7caa63e3ec82fd4bce471cec0a895b704
Author: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Date: Mon Jun 9 17:48:30 2014 +0900
[PATCH 2/3] Move counting pfn_memhole for cyclic mode.
In cyclic mode, memory holes are checked in initialize_2nd_bitmap_cyclic()
in both the kdump path and the ELF path, so pfn_memhole should be
counted there.
Signed-off-by: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This is a backport of the following upstream commit.
commit 16b94ab7fad6744d8b77f2b26838f220307e3118
Author: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Date: Mon Jun 9 17:44:43 2014 +0900
[PATCH 1/3] Remove the 1st bitmap buffer from the ELF path in cyclic mode.
We can create the 2nd bitmap without creating the 1st bitmap by commit
363d53fc8, so we don't need to create the 1st bitmap in cyclic mode
in the ELF path since it isn't used. Thus, we can use the whole bitmap
buffer only for the 2nd bitmap like the kdump path.
Signed-off-by: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This is a backport of the following upstream commit. It is about freeing
the wrong bitmap thing, it could increase the risk of OOM when system is
in an edge of OOM.
commit 0e7b1a6e3c1919c9222b662d458637ddf802dd04
Author: Arthur Zou <zzou@redhat.com>
Date: Wed May 7 17:54:16 2014 +0900
[PATCH v3] Fix free bitmap_buffer_cyclic error.
Description:
In create_dump_bitmap() and write_kdump_pages_and_bitmap_cyclic(),
What should be freed is info->partial_bitmap instead of info->bitmap.
Solution:
Add two functions to free the bitmap_buffer_cyclic. info->partial_bitmap1
is freed by free_bitmap1_buffer_cyclic(). info->partial_bitmap2 is
freed by free_bitmap2_buffer_cyclic(). At the same time, remove
thoes frees that free partial_bitmap1 or partial_bitmap2 at the end
of main() because partial_bitmap1 and partial_bitmap2 has been freed
after dump file has been written out, so there is no need to free it
again at the end of main.
Signed-off-by: Arthur Zou <zzou@redhat.com>
Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This is a backport of the following upstream commit. Late back ported
commit depends on it.
commit 9dc6440c63320066bc6344c6e3ca3c3af88bcc42
Author: Petr Tesarik <ptesarik@suse.cz>
Date: Thu Apr 24 10:58:43 2014 +0900
[PATCH v3] Introduce the mdf_pfn_t type.
Replace unsigned long long with mdf_pfn_t where:
a. the variable denotes a PFN
b. the variable is a number of pages
The number of pages is converted to a mdf_pfn_t, because it is a result
of subtracting two PFNs or incremented in a loop over a range of PFNs,
so it can get as large as a PFN.
Note: The mdf_ (i.e. makedumpfile) prefix is used to prevent possible
conflicts with other software that defines a pfn_t type.
Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com
Backport from the following commit from upstream makedumpfile:
commit 45fc42c
Author: WANG Chao <chaowang@redhat.com>
Date: Tue Jun 10 14:11:27 2014 +0900
[PATCH] Fix Makefile for eppic_makedumpfile.so build.
When libeppic isn't installed on a standard location, building
eppic_makedumpfile.so with -leppic directly doesn't work.
Add LDFLAGS to build arguments, so that one can pass LDFLAGS="-Ldir
-Idir" to tell where to search for libeppic library and its header
files.
For example, if eppic source is installed on the same directory level
with makedumpfile as the following:
makedumpfile
|--- arch
+--- eeppic_scripts
eppic
|--- applications
+--- libeppic
After compiling libeppic, one can use the following command to build
eppic_makedumpfile.so:
make LDFLAGS="-I../eppic/libeppic -L../eppic/libeppic" eppic_makedumpfile.so
Signed-off-by: WANG Chao <chaowang@redhat.com>
With this patch, we don't need use a fedora-specific patch for building
eppic_makedumpfile.so.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Rename the subpackage kdump-anaconda-addon to kexec-tools-anaconda-addon
to keep consistency and make fedpkg build happy
Because every time fedpkg builds a new release the package version number
should increase. But kdump-annaconda-addon just keep same version, so let's
rename it to kexec-tools-annaconda-addon here kexec-tools- is a default prefix.
For version let's use default top level version.
At the same time, rename the kdump-anaconda-addon directory name to anaconda-addon
to make it more standard. Using the current data instead of version number as a
surfix of kdump-anaconda-addon tarball just like kexec-tools-po did.
Signed-off-by: Arthur Zou <zzou@redhat.com>
Acked-by: Dave Young <dyoung@redhat.com>
makedumpfile_eppic.so (provided by kexec-tools-eppic) is built against
makedumpfile (provided by kexec-tools). kexec-tools-eppic must depend on
the same version.release of kexec-tools, otherwise there could be a ABI
compatibility issue.
Signed-off-by: WANG Chao <chaowang@redhat.com>
kdump-dep-generator is a systemd generator, used to write out kdump
service dependencies.
Currently it's only useful for ssh dump case. And in ssh dump case, it
writes out a dependency which kdump.service "Wants"
network-online.target:
# ls -l /run/systemd/generator/kdump.service.wants/
[..] network-online.target -> /usr/lib/systemd/system/network-online.target
So that kdump.service will pull in network-online.target and delayed
start until network-online.target is reached.
In the future, we could use generator to write out kdump.service
dynamically and get rid of the static defined kdump.service at all.
v1->v2:
Vivek: not using hardcoded run time generator path, use what systemd pass in.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
In exteme case vmcore-dmesg will overflow. upstream has fixed the
some problem. so simply backport it
Signed-off-by: Arthur Zou <zzou@redhat.com>
Acked-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This is a backport of the following upstream commit:
commit 4404368
Author: WANG Chao <chaowang@redhat.com>
Date: Wed Dec 18 22:34:43 2013 +0900
[PATCH] memset() in cyclic bitmap initialization introduce segment fault.
We are using memset() to improve performance when creating 1st and 2nd
bitmap. After doing round up the pfn_start and round down pfn_end, it's
possible that pfn_start_roundup is greater than pfn_end_round. A segment
fault could happen in that case because memset is taking roughly the
value of (pfn_end_round << 3 - pfn_start_roundup << 3 ), which is
negative, as its third argument.
So we can skip the memset if start is greater than end. It's safe
because we will set bit for the round up part and also round down part.
Actually this happens on my EFI virtual machine:
cat /proc/iomem:
00000000-00000fff : reserved
00001000-0009ffff : System RAM
000a0000-000bffff : PCI Bus 0000:00
000f0000-000fffff : System ROM
00100000-3d162017 : System RAM
01000000-015cab9b : Kernel code
015cab9c-019beb3f : Kernel data
01b4f000-01da9fff : Kernel bss
30000000-37ffffff : Crash kernel
3d162018-3d171e57 : System RAM
3d171e58-3d172017 : System RAM
3d172018-3d17ae57 : System RAM
3d17ae58-3dc10fff : System RAM
3dc11000-3dc18fff : reserved
3dc19000-3dc41fff : System RAM
3dc42000-3ddcefff : reserved
3ddcf000-3f7fefff : System RAM
3f7ff000-3f856fff : reserved
[..]
gdb ./makedumpfile core
(gdb) bt full
[..]
#1 0x000000000042775d in create_1st_bitmap_cyclic () at makedumpfile.c:4543
i = 0x5
pfn = 0x3d190
phys_start = 0x3d18ee58
phys_end = 0x3d18f018
pfn_start = 0x3d18e
pfn_end = 0x3d18f
pfn_start_roundup = 0x3d190
pfn_end_round = 0x3d188
pfn_start_byte = 0x7a32
pfn_end_byte = 0x7a31
[..]
(gdb) list makedumpfile.c:4543
4538 return FALSE;
4539
4540 pfn_start_byte = (pfn_start_roundup - info->cyclic_start_pfn) >> 3;
4541 pfn_end_byte = (pfn_end_round - info->cyclic_start_pfn) >> 3;
4542
4543 memset(info->partial_bitmap2 + pfn_start_byte,
4544 0xff,
4545 pfn_end_byte - pfn_start_byte);
4546
4547 for (pfn = pfn_end_round; pfn < pfn_end; ++pfn)
Signed-off-by: WANG Chao <chaowang@redhat.com>
This patch fixes segment fault issues on the systems with very small
memory map range (less than 8 pages).
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Backport from upstream.
commit 20ecc0827e7837c52f3903638a59959f8bf17f9e
Author: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Date: Tue Nov 5 00:29:35 2013 +0900
[PATCH v2] Improve progress information for huge memory system.
On system with huge memory, percentage in progress information is
updated at very slow interval, because 1 percent on 1 TiB memory is
about 10 GiB, which looks like as if system has freezed. Then,
confused users might get tempted to push a reset button to recover the
system. We want to avoid such situation as much as possible.
Signed-off-by: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This is a backport of the following upstream commit:
commit 158d763
Author: WANG Chao <chaowang@redhat.com>
Date: Tue Jan 7 01:37:34 2014 +0800
vmcore-dmesg: struct_val_u64() not casting u64 to u32
It seems gcc doesn't check return type from inline function.
struct_val_u64() should return u64 otherwise upper 32bit is lost.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
timestamp in vmcore-dmesg is u64 type but it's truncated to u32, which
results in wrong time stamp. So let's backport this patch to fix this
issue.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This is a backport of the following upstream commit:
commit 7c770ed
Author: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Date: Thu Dec 12 16:40:31 2013 +0900
[PATCH] Fall back to read() when mmap() fails.
This is a fall back path for mmap().
This patch disables mmap() when facing the issues related to mmap(),
and read() will be used to read vmcore instead.
Signed-off-by: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
mmap() file operation on vmcore is working properly when the page being
accessed has different attributes on different part (ie. two different type
of memory ranges are overlapping).
A fall back mechanism is introduced in this patch, in case mmap() fails,
switch to read() afterwards.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This is a backport of the following upstream commit:
commit a895dc8
Author: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Date: Thu Dec 12 16:40:12 2013 +0900
[PATCH] Add --non-mmap option to disable mmap() manually.
When --non-mmap option is specified, makedumpfile doesn't use
mmap() even if /proc/vmcore supports mmap().
Signed-off-by: Atsushi Kumagai <kumagai-atsushi@mxc.nes.nec.co.jp>
Having this patch, user can switch between mmap() and read() when
accessing vmcore. Whenever user feels necessary to use readmem on vmcore
(buggy code in mmap path, debug purpose, etc.), --non-mmap can do this
favor.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This is a backport of the following upstream commit:
commit eb708ce
Author: Baoquan He <bhe@redhat.com>
Date: Tue Jul 2 11:11:07 2013 +0900
[PATCH 2/2] Add help and man message for '--help'.
Conventionally '-h' and '--help' are all provided. Currently makedumpfile
lacks help and man message for '--help'. Here add it.
Signed-off-by: Baoquan He <bhe@redhat.com>
It's needed for applying commit 414d3ed ("Add --non-mmap option to
disable mmap() manually").
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This is a backport of the following upstream commit:
commit bd67c1d
Author: Baoquan He <bhe@redhat.com>
Date: Tue Jul 2 11:09:20 2013 +0900
[PATCH 1/2] Assign non-printable value as short options.
Characters for short options is limited, and now makedumpfile has
considerably many options. As times go on, no enough reasonable
letters can be assigned to each functionality with short options.
E.g non-cyclic vs Y, cyclic-buffer vs Z, eppic vs S.
Now assign non-printable value to these kind of short optins, meanwhile
define them as indicative MACRO which can make code more readable.
Signed-off-by: Baoquan He <bhe@redhat.com>
It's needed for applying commit 414d3ed ("Add --non-mmap option to
disable mmap() manually").
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This reverts commit 2dc9600ad1:
commit 2dc9600
Author: Dave Young <dyoung@redhat.com>
Date: Thu Nov 14 10:51:47 2013 +0800
makedumpfile: disable mmap
There's a kernel bug for mapping mem ranges which end with
an address not aligned to page boundry. It's still not resolved
in upstream, so let's disable mmap read for now as a workaround.
Once upstream got a right fix we can revert this patch.
Signed-off-by: Dave Young <dyoung@redhat.com>
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
makedumpfile can filter out kernel data from vmcore[1]. A how-to of feature
is well explained in makedumpfile.conf, which upstream is already
shipping but we're not.
Now add makedumpfile.conf and its man page to our package the upstream
way:
makedumpfile.conf --> /etc/makedumpfile.conf.sample
makedumpfile.conf.5.gz --> /usr/share/man/man5/makedumpfile.conf.5.gz
[1]. http://lists.infradead.org/pipermail/kexec/2011-September/005466.html
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
This is a backport of commit bcdba92 ("[PATCH v5] Support to filter dump
for kernels that use CONFIG_SPARSEMEM_VMEMMAP."):
commit bcdba92
Author: Hari Bathini <hbathini@linux.vnet.ibm.com>
Date: Mon Nov 25 17:20:55 2013 +0900
[PATCH v5] Support to filter dump for kernels that use CONFIG_SPARSEMEM_VMEMMAP.
Makedumpfile tool fails to filter dump for kernels that are build with
CONFIG_SPARSEMEM_VMEMMAP set, as it fails to do address translations
for vmemmap regions that are mapped out of zone normal. This patch
provides support in makedumpfile to do vmemmap to physical address
translations when they are mapped outside zone normal. Some kernel
symbols are needed in vmcoreinfo for this changes to be effective.
The kernel patch that adds the necessary symbols to vmcoreinfo has
been posted to linuxppc devel mailing list. This patch is influenced
by vmemmap to physical address translation support code in crash tool.
This patch has been tested successfully at all dump filtering levels
on kernels with CONFIG_SPARSEMEM_VMEMMAP set/unset. Also, tested dump
filtering on already filtered vmcores (re-filtering).
Changes from v4 to v5:
Trimmed patch description to be compact and readable.
Changes from v3 to v4:
Rebased to devel branch.
Signed-off-by: Onkar N Mahajan <onmahaja@in.ibm.com>
Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com>
On PPC platform, filter facility is broken since we use
CONFIG_SPARSEMEM_VMEMMAP. This patch fixes this issue but also needs kernel
counterpart fix to get makedumpfile filter working.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Steve Best<sbest@redhat.com>
This is a backport of commit a01b663 ("[PATCH v2] dump-dmesg: Understand
>= v3.11-rc4 dmesg."):
commit a01b663
Author: Lubomir Rintel <lkundrak@v3.sk>
Date: Fri Sep 20 15:56:49 2013 +0900
[PATCH v2] dump-dmesg: Understand >= v3.11-rc4 dmesg.
Symbol name changed with the following commit:
62e32ac printk: rename struct log to struct printk_log
Changes for v2:
* Only back values for symbol names we did actually read;
* either "log" or "printk_log"
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
makedumpfile --dump-dmesg is broken since VMCOREINFO symbol "log" has
renamed to "printk_log". This patch fixes --dump-dmesg on 3.11 kernel.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
There's a kernel bug for mapping mem ranges which end with
an address not aligned to page boundry. It's still not resolved
in upstream, so let's disable mmap read for now as a workaround.
Once upstream got a right fix we can revert this patch.
Signed-off-by: Dave Young <dyoung@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Description of Problem:
This is a REGRESSION issue.
At fedora makedumpfile has been updated toward v1.5.4. Unfortunately,
this version fails calculating phys_base on sadump format and then
fails converting vmcore.
x86_64 kernel is relocatable kernel and there can be a gap between
the physical address statically assigned to kernel data and texts
and the address that is really assigned to each object corresponding
to the kernel symbols. The gap is phys_base. makedump calculates the
phys_base in an ad-hoc way that comparing the addresses of some of
occurrences of "Linux kernel" strings in certain range of vmcore.
Resolution:
Fix patch has already been posted in upstream. so just back port.
The commit ID are:
commit e23dc0a1aa5fa7a4429f72ff1c2fe87a87291065
commit 92563d7a7a5175ef78c4a94ee269b1b455331b4c
Signed-off-by: arthur <zzou@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Boot with "crashkernel=128M,high", kernel now uses "Crash kernel" in
/proc/iomem for crash kernel memory reservations at both low and high:
commit 157752d
Author: Yinghai Lu <yinghai@kernel.org>
kexec: use Crash kernel for Crash kernel low
But kexec is still scanning for "Crash kernel low" in /proc/iomem, and
will fail immediately when load/unload crash kernel.
So let's pull the following commit from kexec upstream to make
it compatible with our kernel:
commit e25e6e7
Author: Yinghai Lu <yinghai@kernel.org>
kdump, x86: Process multiple Crash kernel in /proc/iomem
(This patch from upstream is untouched and can be applied cleanly)
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Description of Problem:
In cyclic mode, makedumpfile recalculates cyclic buffer size as the
largest multiple of the largest block size managed by buddy
allocator, i.e. 4MB, smaller than the cyclic buffer size in order to
enable to process each unit of blocks managed by buddy allocator in
each cycle.
However, makedumpfile does two wrong things in the recalculations:
1) While updating size of cyclic buffer, makedumpfile doesn't update
length of range of cycle in page frame numbers, due to which, if
cyclic buffer size is updated, because cyclic buffer size is always
reduced during udpate, some buffer overrun can happen on the cyclic
buffer. This can cause segmentation violation in the worst case.
2) roundup() is used to calculate bitmap size for maximum block size
managed by buddy allocator, here divideup() is correct, due to
which, although memory filtering is not affected, cyclic buffer size
get too much aligned and less efficient.
Fix patches has already been posted and merged in makedumpfile
development devel branch.
git://git.code.sf.net/p/makedumpfile/code
f8c8218856effc43ea01cd9394761cfb8aeaa8df
a785fa7dd7a7bd7dcbb017d0bea8848243b0924f
Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: WANG Chao <chaowang@redhat.com>
The dumpfile header has this field, which was inherited from
the old "diskdump" facility:
struct disk_dump_header {
...
unsigned int max_mapnr; /* = max_mapnr */
...
and which, among other things, is used by the crash utility as a
delimiter to determine whether a physical address read request is
legitimate. And obviously the field cannot handle PFN values greater
than 32-bits.
The makedumpfile source code does have its own max_mapnr representation
in its DumpInfo structure in "makedumpfile.h":
struct DumpInfo {
...
unsigned long long max_mapnr; /* number of page descriptor */
...
But in its "diskdump_mod.h" file, it carries forward the old diskdump
header format, which has the 32-bit field:
struct disk_dump_header {
...
unsigned int max_mapnr; /* = max_mapnr */
...
And here in "makedumpfile.c", the inadvertent truncation occurs
when the PFN is greater than 32-bits:
int
write_kdump_header(void)
{
...
dh->max_mapnr = info->max_mapnr;
...
Now upstream has below commit to fix this, back port it:
commit 8e124174b62376b17ac909bc68622ef07bde6840
Author: Jingbai Ma <jingbai.ma@hp.com>
Date: Fri Oct 18 18:53:38 2013 +0900
Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: WANG Chao <chaowang@redhat.com>
In 2.0.4, Cliff from HP posted 2 patches:
e35aa29 kexec: include reserved e820 sections in crash kernel
4932034 kexec: lengthen the kernel command line image
However, with both of them kdump kernel may fail to boot, and
are useless because of restriction in kernel side. In upstream,
they have been reverted. Now back port these 2 revert commits.
Also since the commit 1a4e90b has dependency, back port commit
dc607e4 which is depended on by commit 1a4e90b too.
1a4e90b Revert "kexec: include reserved e820 sections in crash kernel"
dc607e4 kexec: i386: Add cmdline_add_memmap_internal() to reduce the code duplication
8274916 Revert: "kexec: lengthen the kernel command line image"
Currently in the whole kdump framework, we have some common functions
used across not only mkdumprd context and dracut context, but also 1st
kernel and 2nd kernel. We defined these functions at each script, which
is obviously not decent.
So let's introduce kdump-lib.sh for the shared functions and put it
to /lib/kdump/kdump-lib.sh.
It starts small, as you can see, only 3 functions are extracted. But in
the future more and more common functions can be added.
Signed-off-by: WANG Chao <chaowang@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Build on ppc/ppc64 failed after makedumpfile-1.5.4 is pulled, since the
variable vmap_area_list is not defined. Back port below commit from
upstream to add it.
commit 150b58eb299066c65ef7713a93effc35c00be03a
Author: Baoquan He <bhe@redhat.com>
Date: Mon Jul 15 20:37:14 2013 +0800
[PATCH] Add vmap_area_list definition for ppc/ppc64.
vmap_area_list is added to get vmalloc_start for ppc/ppc64, but its
definition is missing, now add them.
Signed-off-by: Baoquan He <bhe@redhat.com>
