Resolves: bz2145087
Conflict: None
commit 6b6187f546f0ddad8ea84d22c3f7ad72133dcfe3
Author: Sourabh Jain <sourabhjain@linux.ibm.com>
Date: Thu Sep 15 14:12:40 2022 +0530
ppc64: remove rma_top limit
Restricting kexec tool to allocate hole for kexec segments below 768MB
may not be relavent now since first memory block size can be 1024MB and
more.
Removing rma_top restriction will give more space to find holes for
kexec segments and existing in-place checks make sure that kexec segment
allocation doesn't cross the first memory block because every kexec segment
has to be within first memory block for kdump kernel to boot properly.
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Acked-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Simon Horman <horms@kernel.org>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2078460
Upstream: Fedora
commit 787b041aab
Author: Pingfan Liu <piliu@redhat.com>
Date: Tue Nov 15 12:00:09 2022 +0800
kdump.conf: use a simple generator script to maintain
This commit has the same motivation as the commit 677da8a "sysconfig:
use a simple generator script to maintain".
At present, only the kdump.conf generated for s390x has a slight
difference from the other arches, where the core_collector asks the
makedumpfile to use "-c" option to compress dump data by each page using
zlib, which is more efficient than lzo on s390x.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Resolves: bz2060319
Upstream: Fedora
Conflict: None
commit e218128e28
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Sep 8 14:30:02 2022 +0800
Only try to reset crashkernel for osbuild during package install
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2060319
Currently, kexec-tools tries to reset crashkernel when using anaconda to
install the system. But grubby isn't ready and complains that,
10:33:17,631 INF packaging: Configuring (running scriptlet for): kernel-core-5.14.0-70.el9.x86_64 1645746534 03dcd32db234b72440ee6764d59b32347c5f0cd98ac3fb55beb47214a76f33b4
10:34:16,696 INF dnf.rpm: grep: /boot/grub2/grubenv: No such file or directory
grep: /boot/grub2/grubenv: No such file or directory
We only need to try resetting crashkernel for osbuild. Skip it for other
cases. To tell if it's package install instead of package upgrade, make
use of %pre to write a file /tmp/kexec-tools-install when "$1 == 1" [1].
[1] https://docs.fedoraproject.org/en-US/packaging-guidelines/Scriptlets/#_syntax
Reported-by: Jan Stodola <jstodola@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Lichen Liu <lichenliu@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Related: bz2048690
Upstream: Fedora
Conflict: None
commit f6bcd819fc
Author: Coiby Xu <coxu@redhat.com>
Date: Fri Jul 15 15:11:44 2022 +0800
use /run/ostree-booted to tell if scriptlet is running on OSTree system
Resolves: bz2092012
According to the ostree team [1], the existence of /run/ostree-booted
> is the most stable way to signal/check that a system has been
> booted in ostree-style. It is also used by rpm-ostree at
> compose/install time in the sandboxed environment where scriptlets run,
> in order to signal that the package is being installed/composed into
> an ostree commit (i.e. not directly on a live system). See
> 8ddf5f40d9/src/libpriv/rpmostree-scripts.cxx (L350-L353)
> for reference.
By checking the existence of /run/ostree-booted, we could skip trying to
update kernel cmdline during OSTree compose time.
[1] https://bugzilla.redhat.com/show_bug.cgi?id=2092012#c3
Reported-by: Luca BRUNO <lucab@redhat.com>
Suggested-by: Luca BRUNO <lucab@redhat.com>
Fixes: 0adb0f4 ("try to reset kernel crashkernel when kexec-tools updates the default crashkernel value")
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Acked-by: Timothée Ravier <siosm@fedoraproject.org>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Upstream: fedora
Resolves: bz2045949
Resolves: bz2044804
Conflict: none
commit fc1c79ffd2
Author: Tao Liu <ltao@redhat.com>
Date: Sat Oct 8 12:09:08 2022 +0800
Seperate dracut and dracut-squash compressor for zstd
Previously kexec-tools will pass "--compress zstd" to dracut. It
will make dracut to decide whether: a) call mksquashfs to make a
zstd format squash-root.img, b) call cmd zstd to make a initramfs.
Since dracut(>= 057) has decoupled the compressor for dracut and
dracut-squash, So in this patch, we will pass the compressor seperately.
Note:
The is_squash_available && !dracut_has_option --squash-compressor
&& !is_zsdt_command_available case is left unprocessed on purpose.
Actually, the situation when we want to call zstd compression is:
1) If squash function OK, we want dracut to invoke mksquashfs to make
a zstd format squash-root.img within initramfs.
2) If squash function is not OK, and cmd zstd presents, we want dracut
to invoke cmd zstd to make a zstd format initramfs.
is_zstd_command_available check can handle case 2 completely.
However, for the is_squash_available check, it cannot handle case 1
completely. It only checks if the kernel supports squashfs, it doesn't
check whether the squash module has been added by dracut when making
initramfs. In fact, in kexec-tools we are unable to do the check,
there are multiple ways to forbit dracut to load a module, such as
"dracut -o module" and "omit_dracutmodules in dracut.conf".
When squash dracut module is omitted, is_squash_available check will
still pass, so "--compress zstd" will be appended to dracut cmdline,
and it will call cmd zstd to do the compression. However cmd zstd may
not exist, so it fails.
The previous "--compress zstd" is ambiguous, after the intro of
"--squash-compressor", "--squash-compressor" only effect for
mksquashfs and "--compress" only effect for specific cmd.
So for the is_squash_available && !dracut_has_option
--squash-compressor && !is_zsdt_command_available case, we just leave
it to be handled the default way.
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz2089871
Upstream: Fedora
Conflict: None
commit da0ca0d205
Author: Coiby Xu <coxu@redhat.com>
Date: Tue Jun 28 14:38:28 2022 +0800
Allow to update kexec-tools using virt-customize for cloud base image
Resolves: bz2089871
Currently, kexec-tools can't be updated using virt-customize because
older version of kdumpctl can't acquire instance lock for the
get-default-crashkernel subcommand. The reason is /var/lock is linked to
/run/lock which however doesn't exist in the case of virt-customize.
This patch fixes this problem by using /tmp/kdump.lock as the lock
file if /run/lock doesn't exist.
Note
1. The lock file is now created in /run/lock instead of /var/run/lock since
Fedora has adopted adopted /run [2] since F15.
2. %pre scriptlet now always return success since package update won't
be blocked
[1] https://fedoraproject.org/wiki/Features/var-run-tmpfs
Fixes: 0adb0f4 ("try to reset kernel crashkernel when kexec-tools updates the default crashkernel value")
Reported-by: Nicolas Hicher <nhicher@redhat.com>
Suggested-by: Laszlo Ersek <lersek@redhat.com>
Suggested-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2081323
Upstream: github.com/makedumpfile/makedumpfile.git
Conflicts: None
commit 6d0d95ecc04a70f8448d562ff0fbbae237f5c929
Author: Kazuhito Hagio <k-hagio-ab@nec.com>
Date: Thu Apr 21 08:58:29 2022 +0900
[PATCH] Avoid false-positive mem_section validation with vmlinux
Currently get_mem_section() validates if SYMBOL(mem_section) is the address
of the mem_section array first. But there was a report that the first
validation wrongly returned TRUE with -x vmlinux and SPARSEMEM_EXTREME
(4.15+) on s390x. This leads to crash failing statup with the following
seek error:
crash: seek error: kernel virtual address: 67fffc2800 type: "memory section root table"
Skip the first validation when satisfying the conditions.
Reported-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
Reviewed-and-Tested-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Pingfan Liu <piliu@redhat.com>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Resolves: bz2060824
Upstream: git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git
Conflicts: None
commit 2e1ec106dc5aac951ba884ebe4cca036e9a2d45f
Author: Sven Schnelle <svens@linux.ibm.com>
Date: Thu Dec 16 12:43:56 2021 +0100
s390: add support for --reuse-cmdline
--reuse-cmdline reads the command line of the currently
running kernel from /proc/cmdline and uses that for the
kernel that should be kexec'd.
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Resolves: bz2060824
Upstream: git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git
Conflicts: None
commit d6516ba4c88f217fe14455db92c60cd0e9af18f8
Author: Sven Schnelle <svens@linux.ibm.com>
Date: Thu Dec 16 12:43:55 2021 +0100
use slurp_proc_file() in get_command_line()
This way the size of the command line that get_command_line() can handle
is no longer fixed.
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Resolves: bz2060824
Upstream: git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git
Conflicts: None
commit 193e51deccc62544f6423eb5e5eefc8a23aad679
Author: Sven Schnelle <svens@linux.ibm.com>
Date: Thu Dec 16 12:43:54 2021 +0100
add slurp_proc_file()
slurp_file() cannot be used to read proc files, as they are returning
a size of zero in stat(). Add a function slurp_proc_file() which is
similar to slurp_file(), but doesn't require the size of the file to
be known.
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Resolves: bz2060824
Upstream: git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git
Conflicts: None
commit 91a3d0e00a5c18ee9bdd2c6c03ac64a6471e2559
Author: Sven Schnelle <svens@linux.ibm.com>
Date: Thu Dec 16 12:43:53 2021 +0100
s390: use KEXEC_ALL_OPTIONS
KEXEC_ALL_OPTIONS could be used instead defining the same
array several times. This makes code easier to maintain when
new options are added.
Suggested-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Resolves: bz2060824
Upstream: git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git
Conflicts: None
commit defb80a20bf1e4d778596ce2447e19d44f31ae5a
Author: Sven Schnelle <svens@linux.ibm.com>
Date: Thu Dec 16 12:43:52 2021 +0100
s390: add variable command line size
Newer s390 kernels support a command line size longer than 896
bytes. Such kernels contain a new member in the parameter area,
which might be utilized by tools like kexec. Older kernels have
the location initialized to zero, so we check whether there's a
non-zero number present and use that. If there isn't, we fallback
to the legacy command line size of 896 bytes.
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Resolves: bz2069200
Upstream: git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git
Conflicts: None
commit f4c59879b830c7d574a953e6ce970ddaf20910d7
Author: Philipp Rudo <prudo@redhat.com>
Date: Wed Mar 23 16:35:36 2022 +0100
util_lib/elf_info: harden parsing of printk buffer
The old printk mechanism (> v3.5.0 and < v5.10.0) had a fixed size
buffer (log_buf) that contains all messages. The location for the next
message is stored in log_next_idx. In case the log_buf runs full
log_next_idx wraps around and starts overwriting old messages at the
beginning of the buffer. The wraparound is denoted by a message with
msg->len == 0.
Following the behavior described above blindly is dangerous as e.g. a
memory corruption could overwrite (parts of) the log_buf. If the
corruption adds a message with msg->len == 0 this leads to an endless
loop when dumping the dmesg. Fix this by verifying that not wrapped
around before when it encounters a message with msg->len == 0.
While at it also verify that the index is within the log_buf and thus
guard against corruptions with msg->len != 0.
The same bug has been reported and fixed in makedumpfile [1].
[1] http://lists.infradead.org/pipermail/kexec/2022-March/024272.html
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Resolves: bz2069200
Upstream: github.com/makedumpfile/makedumpfile.git
Conflicts: goto out_error --> return FALSE
due to missing 64b5b29 ("[PATCH 03/15] remove variable length
array in readpage_kdump_compressed()")
commit 5035c0821f07da3badda645cd0064d4b80e1667d
Author: Philipp Rudo <prudo@redhat.com>
Date: Mon Mar 14 17:04:32 2022 +0100
[PATCH] print error when reading with unsupported compression
Currently makedumpfile only checks if the required compression algorithm
was enabled during build when compressing a dump but not when reading
from one. This can lead to situations where, one version of makedumpfile
creates the dump using a compression algorithm an other version of
makedumpfile doesn't support. When the second version now tries to, e.g.
extract the dmesg from the dump it will fail with an error similar to
# makedumpfile --dump-dmesg vmcore dmesg.txt
__vtop4_x86_64: Can't get a valid pgd.
readmem: Can't convert a virtual address(ffffffff92e18284) to physical address.
readmem: type_addr: 0, addr:ffffffff92e18284, size:390
check_release: Can't get the address of system_utsname.
makedumpfile Failed.
That's because readpage_kdump_compressed{_parallel} does not return
with an error if the page it is trying to read is compressed with an
unsupported compression algorithm. Thus readmem copies random data from
the (uninitialized) cachebuf to its caller and thus causing the error
above.
Fix this by checking if the required compression algorithm is supported
in readpage_kdump_compressed{_parallel} and print a proper error message
if it isn't.
Reported-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-and-tested-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Resolves: bz2069200
Upstream: github.com/makedumpfile/makedumpfile.git
Conflicts: None
commit 68d120b30af5e930afafed81e79712af3c1a278c
Author: Philipp Rudo <prudo@redhat.com>
Date: Mon Mar 14 17:04:31 2022 +0100
[PATCH v2 3/3] use cycle detection when parsing the prink log_buf
The old printk mechanism (> v3.5.0 and < v5.10.0) had a fixed size
buffer (log_buf) that contains all messages. The location for the next
message is stored in log_next_idx. In case the log_buf runs full
log_next_idx wraps around and starts overwriting old messages at the
beginning of the buffer. The wraparound is denoted by a message with
msg->len == 0.
Following the behavior described above blindly in makedumpfile is
dangerous as e.g. a memory corruption could overwrite (parts of) the
log_buf. If the corruption adds a message with msg->len == 0 this leads
to an endless loop when dumping the dmesg with makedumpfile appending
the messages up to the corruption over and over again to the output file
until file system is full. Fix this by using cycle detection and aboard
once one is detected.
While at it also verify that the index is within the log_buf and thus
guard against corruptions with msg->len != 0.
Reported-by: Audra Mitchell <aubaker@redhat.com>
Suggested-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-and-tested-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Resolves: bz2069200
Upstream: github.com/makedumpfile/makedumpfile.git
Conflicts: None
commit e1d2e5302b016c6f7942f46ffa27aa31326686c5
Author: Philipp Rudo <prudo@redhat.com>
Date: Mon Mar 14 17:04:30 2022 +0100
[PATCH v2 2/3] use pointer arithmetics for dump_dmesg
When parsing the printk buffer for the old printk mechanism (> v3.5.0+ and
< 5.10.0) a log entry is currently specified by the offset into the
buffer where the entry starts. Change this to use a pointers instead.
This is done in preparation for using the new cycle detection mechanism.
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-and-tested-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Resolves: bz2069200
Upstream: github.com/makedumpfile/makedumpfile.git
Conflicts: None
commit feae3d1754d2b0788ce1f18b0cd4b40098ff52ff
Author: Philipp Rudo <prudo@redhat.com>
Date: Mon Mar 14 17:04:29 2022 +0100
[PATCH v2 1/3] add generic cycle detection
In order to work makedumpfile needs to interpret data read from the
dump. This can cause problems as the data from the dump cannot be
trusted (otherwise the kernel wouldn't have panicked in the first
place). This also means that every loop which stop condition depend on
data read from the dump has a chance to loop forever. Thus add a generic
cycle detection mechanism that allows to detect and handle such
situations appropriately.
For cycle detection use Brent's algorithm [1] as it has constant memory
usage. With this it can also be used in the kdump kernel without the
danger that it runs oom when iterating large data structures.
Furthermore it only depends on some pointer arithmetic. Thus the
performance impact (as long as no cycle was detected) should be
comparatively small.
[1] https://en.wikipedia.org/wiki/Cycle_detection#Brent's_algorithm
Suggested-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-and-tested-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
upstream: fedora
resolves: bz2055498
conflict: none
commit 59b1726fbcc251155140c8a1972384498fee4daf
Author: HATAYAMA Daisuke <d.hatayama@fujitsu.com>
Date: Tue Jan 25 12:55:15 2022 +0000
[PATCH] sadump, kaslr: fix failure of calculating kaslr_offset
On kernels v5.8 or later, makedumpfile fails for memory dumps in the
sadump-related formats as follows:
# makedumpfile -f -l -d 31 -x ./vmlinux /dev/sdd4 /root/vmcore-ld31
__vtop4_x86_64: Can't get a valid pud_pte.
...110 lines of the same message...
__vtop4_x86_64: Can't get a valid pud_pte.
calc_kaslr_offset: failed to calculate kaslr_offset and phys_base; default to 0
readmem: type_addr: 1, addr:ffffffff85411858, size:8
__vtop4_x86_64: Can't get pgd (page_dir:ffffffff85411858).
readmem: Can't convert a virtual address(ffffffff059be980) to physical address.
readmem: type_addr: 0, addr:ffffffff059be980, size:1024
cpu_online_mask_init: Can't read cpu_online_mask memory.
makedumpfile Failed.
This is caused by the kernel commit 9d06c4027f21 ("x86/entry: Convert
Divide Error to IDTENTRY") that renamed divide_error to
asm_exc_divide_error, breaking logic for calculating kaslr offset.
Fix this by adding initialization of asm_exc_divide_error.
Signed-off-by: HATAYAMA Daisuke <d.hatayama@fujitsu.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz2051822
Upstream: Fedora
Conflict: None
commit 311b5b100b
Author: Coiby Xu <coxu@redhat.com>
Date: Fri Feb 11 13:11:17 2022 +0800
update kernel crashkernel in posttrans RPM scriptlet when updating kexec-tools
When doing in-place upgrading using leapp on x86_64, kdumpcl can't
acquire instance lock when running in %post RPM scriplet on x86_64,
localhost upgrade[1306]: /bin/kdumpctl: line 49: /var/lock/kdump: No such file or directory
localhost upgrade[1306]: kdump: Create file lock failed
and running "touch /var/lock/dkump" also fails with
"No such file or directory". Thus kdumpctl can't be run in %post
scriptlet. But kdumpctl can be run in %posttrans RPM scriplet.
Besides, it's better to update crashkernel after the kernel has been
updated. So let's update kernel crashkernel in the %posttrans
scriptlet which will be run in the end of a transaction i.e. after
the kernel has been updated.
Note for %posttrans scriptlet, "$1 == 1" means both installing a new
package and upgrading a package.
[1] https://github.com/apptainer/singularity/issues/2386#issuecomment-474747054
Reported-by: Jie Li <jieli@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2041911
Upstream: git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git
Conflicts: None
commit 186e7b0752d8fce1618fa37519671c834c46340e
Author: Alexander Egorenkov <egorenar@linux.ibm.com>
Date: Wed Dec 15 18:48:53 2021 +0100
s390: handle R_390_PLT32DBL reloc entries in machine_apply_elf_rel()
Starting with gcc 11.3, the C compiler will generate PLT-relative function
calls even if they are local and do not require it. Later on during linking,
the linker will replace all PLT-relative calls to local functions with
PC-relative ones. Unfortunately, the purgatory code of kexec/kdump is
not being linked as a regular executable or shared library would have been,
and therefore, all PLT-relative addresses remain in the generated purgatory
object code unresolved. This in turn lets kexec-tools fail with
"Unknown rela relocation: 0x14 0x73c0901c" for such relocation types.
Furthermore, the clang C compiler has always behaved like described above
and this commit should fix the purgatory code built with the latter.
Because the purgatory code is no regular executable or shared library,
contains only calls to local functions and has no PLT, all R_390_PLT32DBL
relocation entries can be resolved just like a R_390_PC32DBL one.
* https://refspecs.linuxfoundation.org/ELF/zSeries/lzsabi0_zSeries/x1633.html#AEN1699
Relocation entries of purgatory code generated with gcc 11.3
------------------------------------------------------------
$ readelf -r purgatory/purgatory.o
Relocation section '.rela.text' at offset 0x6e8 contains 27 entries:
Offset Info Type Sym. Value Sym. Name + Addend
00000000000c 000300000013 R_390_PC32DBL 0000000000000000 .data + 2
00000000001a 001000000014 R_390_PLT32DBL 0000000000000000 sha256_starts + 2
000000000030 001100000014 R_390_PLT32DBL 0000000000000000 sha256_update + 2
000000000046 001200000014 R_390_PLT32DBL 0000000000000000 sha256_finish + 2
000000000050 000300000013 R_390_PC32DBL 0000000000000000 .data + 102
00000000005a 001300000014 R_390_PLT32DBL 0000000000000000 memcmp + 2
...
000000000118 001600000014 R_390_PLT32DBL 0000000000000000 setup_arch + 2
00000000011e 000300000013 R_390_PC32DBL 0000000000000000 .data + 2
00000000012c 000f00000014 R_390_PLT32DBL 0000000000000000 verify_sha256_digest + 2
000000000142 001700000014 R_390_PLT32DBL 0000000000000000
post_verification[...] + 2
Relocation entries of purgatory code generated with gcc 11.2
------------------------------------------------------------
$ readelf -r purgatory/purgatory.o
Relocation section '.rela.text' at offset 0x6e8 contains 27 entries:
Offset Info Type Sym. Value Sym. Name + Addend
00000000000e 000300000013 R_390_PC32DBL 0000000000000000 .data + 2
00000000001c 001000000013 R_390_PC32DBL 0000000000000000 sha256_starts + 2
000000000036 001100000013 R_390_PC32DBL 0000000000000000 sha256_update + 2
000000000048 001200000013 R_390_PC32DBL 0000000000000000 sha256_finish + 2
000000000052 000300000013 R_390_PC32DBL 0000000000000000 .data + 102
00000000005c 001300000013 R_390_PC32DBL 0000000000000000 memcmp + 2
...
00000000011a 001600000013 R_390_PC32DBL 0000000000000000 setup_arch + 2
000000000120 000300000013 R_390_PC32DBL 0000000000000000 .data + 122
000000000130 000f00000013 R_390_PC32DBL 0000000000000000 verify_sha256_digest + 2
000000000146 001700000013 R_390_PC32DBL 0000000000000000 post_verification[...] + 2
Corresponding s390 kernel discussion:
* https://lore.kernel.org/linux-s390/20211208105801.188140-1-egorenar@linux.ibm.com/T/#u
Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reported-by: Tao Liu <ltao@redhat.com>
Suggested-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
[hca@linux.ibm.com: changed commit message as requested by Philipp Rudo]
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Resolves: bz2017196
Upstream: Fedora
Conflict: None
commit c480be7ccf
Author: Pingfan Liu <piliu@redhat.com>
Date: Wed Jan 12 19:24:26 2022 +0800
spec: add hostname.rpm into Recommends list
kexec-tools runs hostname binary in the case of fence_kdump. Since this
is a trival dependency and should not block the kexec-tools installation
if non-existent, using weak-dependency to resolve it.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Acked-by: Tao Liu <ltao@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
resolves: bz1896698
upstream: fedora
conflict: none
commit b8ec5cbda89610244fdd4711e5974350f78e63e3
Author: Tao Liu <ltao@redhat.com>
Date: Fri Jan 7 19:47:06 2022 +0800
Set zstd as recommented for kexec-tools
This patch will make zstd as recommended instead of required for
kexec-tools. If zstd command/package is unavaliable, it can failback to invoke
gzip when making kdump initramfs.
Fixes: 0311f6e ("Set zstd as the default compression method for kdump initrd")
Signed-off-by: Tao Liu <ltao@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz1895258
Upstream: Fedora
Conflict: None
commit d5c31605f3
Author: Coiby Xu <coxu@redhat.com>
Date: Thu Jan 6 09:48:17 2022 +0800
use grep -s to suppress error messages about nonexistent or unreadable files
When a file doesn't exist or isn't readable, grep complains as follows,
grep: /proc/cmdline: No such file or directory
grep: /etc/kernel/cmdline: No such file or directory
/proc/cmdline doesn't exist when installing package for an OS image and
/etc/kernel/cmdline may not exist if osbuild doesn't want set custom
kernel cmdline.
Use "-s" to suppress the error messages.
Fixes: 0adb0f4 ("try to reset kernel crashkernel when kexec-tools updates the default crashkernel value")
Fixes: ddd428a ("set up kernel crashkernel for osbuild in kernel hook")
Signed-off-by: Coiby Xu <coxu@redhat.com>
Acked-by: Tao Liu <ltao@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
resolves: bz1896698
upstream: fedora
conflict: none
commit 0311f6e25b
Author: Tao Liu <ltao@redhat.com>
Date: Wed Jan 5 17:42:12 2022 +0800
Set zstd as the default compression method for kdump initrd
zstd has better compression ratio and time consumption balance.
When no customized compression method specified in kdump.conf,
we will use zstd as the default compression method.
**The test method:
I installed kexec-tools with and without the patch, executing the following
command for 4 times, and calculate the averange time:
$ rm -f /boot/initramfs-*kdump.img && time kdumpctl rebuild && \
ls -ail /boot/initramfs-*kdump.img
**The test result:
Bare metal x86_64 machine:
dracut with squash module
zlib lzo xz lz4 zstd
real 10.6282 11.0398 11.395 8.6424 10.1676
user 9.8932 11.9072 14.2304 2.8286 8.6468
sys 3.523 3.4626 3.6028 3.5 3.4942
size of
kdump.img 30575616 31419392 27102208 36666368 29236224
dracut without squash module
zlib lzo xz lz4 zstd
real 9.509 19.4876 11.6724 9.0338 10.267
user 10.6028 14.516 17.8662 4.0476 9.0936
sys 2.942 2.9184 3.0662 2.9232 3.0662
size of
kdump.img 19247949 19958120 14505056 21112544 17007764
PowerVM hosted ppc64le VM:
dracut with squash module | dracut without sqaush module
zlib zstd | zlib zstd
real 10.6742 10.7572 | 9.7676 10.5722
user 18.754 19.8338 | 20.7932 13.179
sys 1.8358 1.864 | 1.637 1.663
|
size of |
kdump.img 36917248 35467264 | 21441323 19007108
**discussion
zstd has a better compression ratio and time consumption balance.
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz1895258
Upstream: Fedora
Conflict: None
commit 0adb0f4a8c
Author: Coiby Xu <coxu@redhat.com>
Date: Wed Dec 1 15:33:13 2021 +0800
try to reset kernel crashkernel when kexec-tools updates the default crashkernel value
kexec-tools could update the default crashkernel value.
When auto_reset_crashkernel=yes, reset kernel to new crashkernel
value in the following two cases,
- crashkernel=auto is found in the kernel cmdline
- the kernel crashkernel was previously set by kexec-tools i.e.
the kernel is using old default crashkernel value
To tell if the user is using a custom value for the kernel crashkernel
or not, we assume the user would never use the default crashkernel value
as custom value. When kexec-tools gets updated,
1. save the default crashkernel value of the older package to
/tmp/crashkernel (for POWER system, /tmp/crashkernel_fadump is saved
as well).
2. If auto_reset_crashkernel=yes, iterate all installed kernels.
For each kernel, compare its crashkernel value with the old
default crashkernel and reset it if yes
The implementation makes use of two RPM scriptlets [2],
- %pre is run before a package is installed so we can use it to save
old default crashkernel value
- %post is run after a package installed so we can use it to try to reset
kernel crashkernel
There are several problems when running kdumpctl in the RPM scripts
for CoreOS/Atomic/Silverblue, for example, the lock can't be acquired by
kdumpctl, "rpm-ostree kargs" can't be run and etc.. So don't enable this
feature for CoreOS/Atomic/Silverblue.
Note latest shellcheck (0.8.0) gives false positives about the
associative array as of this commit. And Fedora's shellcheck is 0.7.2
and can't even correctly parse the shell code because of the associative
array.
[1] https://github.com/koalaman/shellcheck/issues/2399
[2] https://docs.fedoraproject.org/en-US/packaging-guidelines/Scriptlets/
Reviewed-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
