Resolves: bz2090534
Upstream: Fedora
Conflict: None
commit 4d52b7d548
Author: Lichen Liu <lichliu@redhat.com>
Date: Tue Sep 6 11:15:15 2022 +0800
mkdumprd: Improve error messages on non-existing NFS target directories
When kdump is configured with a NFS location, and the remote directory does
not exist, kdump.service fails with a confusing error message.
kdumpctl[2172]: kdump: Dump path "/tmp/mkdumprd.ftWhOF/target/dumps"
does not exist in dump target "10.111.113.2:/srv/kdump"
We just need to print the remote directory "dumps" in such case, because
"/tmp/mkdumprd.ftWhOF/target" is the local temporary mount point.
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Reviewed-by: Coiby Xu<coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2129842
Upstream: Fedora
Conflict: None
commit d905d49c08
Author: Hari Bathini <hbathini@linux.ibm.com>
Date: Fri Sep 16 19:07:24 2022 +0530
fadump: avoid non-debug kernel use for fadump case
Since commit c5bdd2d8f1 ("kdump-lib: use non-debug kernels first"),
non-debug kernel is preferred, over the debug variant, as dump capture
kernel to reduce memory consumption. This works alright for kdump as
the capture kernel is loaded using kexec.
In case of fadump, regular boot loader is used to load the capture
kernel. So, the default kernel needs to be used as capture kernel as
well. But with commit c5bdd2d8f1, initrd of a different kernel is
made dump capture capable, breaking fadump's ability to capture dump
properly. Fix this by sticking with the debug variant in case of
fadump.
Fixes: c5bdd2d8f1 ("kdump-lib: use non-debug kernels first")
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Acked-by: Lichen Liu <lichliu@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@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: bz2111857
Upstream: Fedora
Conflict: None
commit 4edcd9a400
Author: Lichen Liu <lichliu@redhat.com>
Date: Wed Aug 24 16:16:14 2022 +0800
kdumpctl: make the kdump.log root-readable-only
Decrease the risk that of leaking information that could potentially
be used to exploit the crash further (think location of keys).
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2076425
Upstream: Fedora
Conflict: None
commit c5bdd2d8f1
Author: Lichen Liu <lichliu@redhat.com>
Date: Mon Jun 13 12:08:08 2022 +0800
kdump-lib: use non-debug kernels first
Kdump uses currently running kernel as default, but when currently
running kernel is a debug kernel, it will consume more memory,
which may cause out-of-memory and fail to collect vmcore.
Now we will try to use non-debug kernels first if possible.
Also extract the logic of determine KDUMP_KERNEL from
prepare_kdump_bootinfo into a function. This function will return
KDUMP_KERNEL given a kernel version.
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2076425
Upstream: Fedora
Conflict: None
commit aa9bb8f8ce
Author: Philipp Rudo <prudo@redhat.com>
Date: Fri Mar 25 15:46:59 2022 +0100
kdump-lib: fix typo in variable name
in prepare_kdump_bootinfo s/defaut/default/.
While at it declare it with the other local variables as local.
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Tao Liu <ltao@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2041729
Upstream: Fedora
Conflict: None
commit b92bc6e0a7
Author: Pingfan Liu <piliu@redhat.com>
Date: Mon Jun 13 10:25:26 2022 +0800
crashkernel: optimize arm64 reserved size if PAGE_SIZE=4k
On RHEL9 and Fedora, the arm64 platform only supports 4KB page size.
the reserved memory size can be aligned to that on x86_64.
Introducing a new formula for 4KB on arm64, which bases on x86_64 plus
extra 64MB.
Signed-off-by: Pingfan Liu <piliu@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Pingfan Liu <piliu@redhat.com>
upstream: fedora
resolves: bz2096132
conflict: none
commit 2bbc7512a2
Author: Tao Liu <ltao@redhat.com>
Date: Wed Feb 16 14:26:38 2022 +0800
kdump-lib.sh: Check the output of blkid with sed instead of eval
Previously the output of blkid is not checked. If the output
is empty, the eval will report the following error message:
/lib/kdump/kdump-lib.sh: eval: line 925: syntax error near unexpected token `;'
/lib/kdump/kdump-lib.sh: eval: line 925: `; echo $TYPE'
For example, we can observe such a failing when blkid is invoked
against a lvm thinpool block device:
$ blkid -u filesystem,crypto -o export -- "/dev/block/253\:2"
$ echo $?
2
$ udevadm info /dev/block/253\:2|grep S\:
S: mapper/vg00-thinpoll_tmeta
In this patch, we will use sed instead of eval, to output the
fstype of block device if any.
Signed-off-by: Tao Liu <ltao@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz2090533
Upstream: Fedora
Conflict: None
commit 218d9917c0
Author: Dusty Mabe <dusty@dustymabe.com>
Date: Mon May 16 14:04:12 2022 -0400
kdump.sysconfig*: add ignition.firstboot to KDUMP_COMMANDLINE_REMOVE
For CoreOS based systems we use Ignition for provisioning machines
in the initramfs on first boot. We trigger Ignition right now by
the presence of `ignition.firstboot` in the kernel command line. The
kernel argument is only present on first boot so after a reboot it
no longer is in the kernel command line.
If a kernel crash happens before the first reboot of a machine we
want the `ignition.firstboot` kernel argument to be removed and not
passed on to the crash kernel.
Signed-off-by: Lichen Liu <lichliu@redhat.com>
Resolves: bz2059492
Upstream: Fedora
Conflict: None
commit 1e7df3e1f3
Author: Coiby Xu <coxu@redhat.com>
Date: Tue Mar 1 17:30:50 2022 +0800
update kexec-kdump-howto
1. yum is deprecated so use dnf instead
2. use the "kdumpctl reset-crashkernel" API
3. ask the users to refer to crashkernel-howto.txt for setting custom
crashkernel value
4. fix a typo
Philipp Rudo <prudo@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2074473
Upstream: Fedora
Conflict: None
commit 4f702c81e9
Author: Coiby Xu <coxu@redhat.com>
Date: Thu May 12 10:48:31 2022 +0800
improve get_recommend_size
This patch rewrites get_recommend_size to get rid of the following
limitations,
1. only supports ranges in crashkernel sorted in increasing order
2. the first entry of crashkernel should have only a single digit and
it's in gigabytes
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: bz2074473
Upstream: Fedora
Conflict: None
commit 5c23b6ebb7
Author: Coiby Xu <coxu@redhat.com>
Date: Sat May 7 16:30:39 2022 +0800
fix a calculation error in get_system_size
Recently, it's found 'kdumpctl estimate' returns 512M while the system
reserves 1024M kdump memory in a case. This happens because the ranges
in /proc/iomem are inclusively. For example, "0-1: System RAM" means 2
bytes of system memory other than 1 byte. Fix this error by adding one
more byte.
Note
1. the function has been simplified as well.
2. define PROC_IOMEM as /proc/iomem for the sake of unit tests
Reported-by: Ruowen Qin <ruqin@redhat.com>
Fixes: 1813189 ("kdump-lib.sh: introduce functions to return recommened mem size")
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>
Upstream: fedora
Conflict: none
Resolves: bz2060774
commit 6d4062a936
Author: Coiby Xu <coxu@redhat.com>
Date: Wed Feb 16 09:42:54 2022 +0800
try to update the crashkernel in GRUB_ETC_DEFAULT after kexec-tools updates the default crashkernel value
If GRUB_ETC_DEFAULT use crashkernel=auto or
crashkernel=OLD_DEFAULT_CRASHKERNEL, it should be updated as well.
Add a helper function to read kernel cmdline parameter from
GRUB_ETC_DEFAULT. This function is used to read kernel cmdline
parameter like fadump or crashkernel.
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>
Resolves: bz2060774
Upstream: fedora
Conflict: none
commit 37f4f2c1f6
Author: Coiby Xu <coxu@redhat.com>
Date: Tue Feb 15 13:24:19 2022 +0800
address the case where there are multiple values for the same kernel arg
There is the case where there are multiple entries of the same parameter on
the command line, e.g.
GRUB_CMDLINE_LINUX="crashkernel=110M crashkernel=220M fadump=on crashkernel=330M".
In such an situation _update_kernel_cmdline_in_grub_etc_default only
updates/removes the last entry which is usually not what you want as the
kernel (for crashkernel) takes the last entry it can find.
Thus make sure the case with multiple entries of the same parameter is
handled properly by removing all occurrences of given parameter first.
Note
1. sed command group and conditional control has been used to get rid of
grep.
2. Fully supporting kernel cmdline as documented in
Documentation/admin-guide/kernel-parameters.rst is complex and in
foreseeable future a full implementation is not needed. So simply
document the unsupported cases instead.
Fixes: 140da74 ("rewrite reset_crashkernel to support fadump and to used by RPM scriptlet")
Reported-by: Philipp Rudo <prudo@redhat.com>
Suggested-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Signed-off-by: Tao Liu <ltao@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>
Related: bz1895258
Upstream: Fedora
Conflict: None
commit 41b8f9528c
Author: Coiby Xu <coxu@redhat.com>
Date: Wed Feb 9 08:04:39 2022 +0800
fix incorrect usage of _get_all_kernels_from_grubby
It's found that the kernel cmdline crashkernel=auto doesn't get updated
when upgrading kexec-tools. This happens because _get_all_kernels_from_grubby
is called with no argument by reset_crashkernel_after_update. When retrieving
all kernel paths on the system, "grubby --info ALL" should be used. Fix this
error by passing "ALL" argument.
Fixes: 0adb0f4 ("try to reset kernel crashkernel when kexec-tools updates the default crashkernel value")
Reported-by: Jie Li <jieli@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Tao Liu <ltao@redhat.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Resolves: bz2024976
Upstream: Fedora
Conflict: None
commit 5111c01334
Author: Coiby Xu <coxu@redhat.com>
Date: Mon Feb 7 08:08:01 2022 +0800
fix the mistake of swapping function parameters of read_proc_environ_var
_is_osbuild fails because it expects the 1st and 2nd function parameter
to be the environment variable and environ file path respectively. Fix
it by swapping the parameters in read_proc_environ_var.
Note the osbuild environ file path is defined in _OSBUILD_ENVIRON_PATH
so _is_osbuild can be unit-tested by overwriting _OSBUILD_ENVIRON_PATH.
Fixes: 6a3ce83 ("fix the error of parsing the container environ variable for osbuild")
Signed-off-by: Coiby Xu <coxu@redhat.com>
Reviewed-by: Pingfan Liu <piliu@redhat.com>
