9ede522d29
- kdump-no-crashkernel-in-Xen-PV-DomU.patch: Do not reserve crashkernel on Xen PV DomU (bsc#989792). - kdump-nokaslr.patch: Add 'nokaslr' to the kdump kernel command line (bsc#1075937). OBS-URL: https://build.opensuse.org/request/show/580573 OBS-URL: https://build.opensuse.org/package/show/Kernel:kdump/kdump?expand=0&rev=156
32 lines
1.3 KiB
Diff
32 lines
1.3 KiB
Diff
From: Petr Tesarik <ptesarik@suse.com>
|
|
Date: Tue, 27 Feb 2018 09:57:04 +0100
|
|
Subject: Add 'nokaslr' to the kdump kernel command line
|
|
References: bsc#1075937
|
|
Upstream: merged
|
|
Git-commit: 0724bcc8220bf2bd4a3598185dcd5ec7e9e5fe47
|
|
|
|
The kASLR algorithm may decide to place the kernel into low memory,
|
|
which does not leave enough space for SWIOTLB, and dumping fails
|
|
later on. Since the kdump environment does not run any exploitable
|
|
services, kASLR can be safely disabled.
|
|
|
|
Note that kexec already avoids the low memory reservation when
|
|
finding a suitable location for the kernel, initrd and other data.
|
|
|
|
Signed-off-by: Petr Tesarik <ptesarik@suse.com>
|
|
---
|
|
init/load.sh | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
--- a/init/load.sh
|
|
+++ b/init/load.sh
|
|
@@ -72,7 +72,7 @@ function build_kdump_commandline()
|
|
nr_cpus=$(cpus_param "$kdump_kernel")=${KDUMP_CPUS:-1}
|
|
fi
|
|
# Use deadline for saving the memory footprint
|
|
- commandline="$commandline elevator=deadline sysrq=yes reset_devices acpi_no_memhotplug cgroup_disable=memory"
|
|
+ commandline="$commandline elevator=deadline sysrq=yes reset_devices acpi_no_memhotplug cgroup_disable=memory nokaslr"
|
|
commandline="$commandline irqpoll ${nr_cpus}"
|
|
commandline="$commandline root=kdump rootflags=bind rd.udev.children-max=8"
|
|
case $(uname -i) in
|