dfc087bedd
Resolves: RHEL-103425
Upstream: kdump-utils
Conflict: Need manually edit patch 0006.
QA found a regression on powerpc arch when verifying disabling kfence.
And further tests shows only powerpc has the issue, all other
architectures all works well with disabling kfence by pass in the
parameter 'kfence.sample_interval=0' to kdump kernel.
Hence only revert the change on powerpc for now, will check what's going
on on powerpc later.
commit b061a48965476e5b2e6be59686783c85d0f14b5c
Author: Baoquan He <bhe@redhat.com>
Date: Mon Aug 11 17:02:46 2025 +0800
sysconfig: disable kfence in kdump kernel
In commit ddb0bab1f7e1, I mistakenly added the 'kfence.sample_interval=0'
into KDUMP_COMMANDLINE_APPEND which is taken as default parameters added
into kdump kernel. The KDUMP_COMMANDLINE_APPEND value is for unsupported
architecuture. We should append wanted kernel parameter to each
supported architecture in "update_param KDUMP_COMMANDLINE_APPEND" place.
Fix it now.
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Baoquan He <bhe@redhat.com>
65 lines
3.4 KiB
Diff
65 lines
3.4 KiB
Diff
From 2ca913e9ccb2b964241e8c885e00d56d54b8fbe1 Mon Sep 17 00:00:00 2001
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From: Baoquan He <bhe@redhat.com>
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Date: Mon, 11 Aug 2025 17:02:46 +0800
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Subject: [PATCH] sysconfig: disable kfence in kdump kernel
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Content-type: text/plain
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In commit ddb0bab1f7e1, I mistakenly added the 'kfence.sample_interval=0'
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into KDUMP_COMMANDLINE_APPEND which is taken as default parameters added
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into kdump kernel. The KDUMP_COMMANDLINE_APPEND value is for unsupported
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architecuture. We should append wanted kernel parameter to each
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supported architecture in "update_param KDUMP_COMMANDLINE_APPEND" place.
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Fix it now.
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Signed-off-by: Baoquan He <bhe@redhat.com>
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---
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gen-kdump-sysconfig.sh | 10 +++++-----
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1 file changed, 5 insertions(+), 5 deletions(-)
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diff --git a/gen-kdump-sysconfig.sh b/gen-kdump-sysconfig.sh
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index ca2e7610bc59..e5afca0a910b 100755
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--- a/gen-kdump-sysconfig.sh
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+++ b/gen-kdump-sysconfig.sh
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@@ -29,7 +29,7 @@ KDUMP_COMMANDLINE_REMOVE="hugepages hugepagesz slub_debug quiet log_buf_len swio
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# This variable lets us append arguments to the current kdump commandline
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# after processed by KDUMP_COMMANDLINE_REMOVE
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-KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 reset_devices novmcoredd cma=0 hugetlb_cma=0 kfence.sample_interval=0"
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+KDUMP_COMMANDLINE_APPEND="irqpoll maxcpus=1 reset_devices novmcoredd cma=0 hugetlb_cma=0"
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# This variable lets us append arguments to fadump (powerpc) capture kernel,
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# further to the parameters passed via the bootloader.
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@@ -82,11 +82,11 @@ case "$1" in
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aarch64)
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update_param KEXEC_ARGS "-s"
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update_param KDUMP_COMMANDLINE_APPEND \
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- "irqpoll nr_cpus=1 reset_devices cgroup_disable=memory udev.children-max=2 panic=10 swiotlb=noforce novmcoredd cma=0 hugetlb_cma=0"
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+ "irqpoll nr_cpus=1 reset_devices cgroup_disable=memory udev.children-max=2 panic=10 swiotlb=noforce novmcoredd cma=0 hugetlb_cma=0 kfence.sample_interval=0"
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;;
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i386)
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update_param KDUMP_COMMANDLINE_APPEND \
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- "irqpoll nr_cpus=1 reset_devices numa=off udev.children-max=2 panic=10 transparent_hugepage=never novmcoredd cma=0 hugetlb_cma=0"
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+ "irqpoll nr_cpus=1 reset_devices numa=off udev.children-max=2 panic=10 transparent_hugepage=never novmcoredd cma=0 hugetlb_cma=0 kfence.sample_interval=0"
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;;
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ppc64)
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update_param KEXEC_ARGS "--dt-no-old-root"
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@@ -109,12 +109,12 @@ s390x)
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update_param KDUMP_COMMANDLINE_REMOVE \
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"hugepages hugepagesz slub_debug quiet log_buf_len swiotlb vmcp_cma cma hugetlb_cma prot_virt ignition.firstboot zfcp.allow_lun_scan"
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update_param KDUMP_COMMANDLINE_APPEND \
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- "nr_cpus=1 cgroup_disable=memory numa=off udev.children-max=2 panic=10 transparent_hugepage=never novmcoredd vmcp_cma=0 cma=0 hugetlb_cma=0"
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+ "nr_cpus=1 cgroup_disable=memory numa=off udev.children-max=2 panic=10 transparent_hugepage=never novmcoredd vmcp_cma=0 cma=0 hugetlb_cma=0 kfence.sample_interval=0"
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;;
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x86_64)
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update_param KEXEC_ARGS "-s"
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update_param KDUMP_COMMANDLINE_APPEND \
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- "irqpoll nr_cpus=1 reset_devices cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 acpi_no_memhotplug transparent_hugepage=never nokaslr hest_disable novmcoredd cma=0 hugetlb_cma=0 pcie_ports=compat"
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+ "irqpoll nr_cpus=1 reset_devices cgroup_disable=memory mce=off numa=off udev.children-max=2 panic=10 acpi_no_memhotplug transparent_hugepage=never nokaslr hest_disable novmcoredd cma=0 hugetlb_cma=0 pcie_ports=compat kfence.sample_interval=0"
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;;
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*)
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echo "Warning: Unknown architecture '$1', using default sysconfig template." >&2
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--
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2.41.0
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