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Update docs on oops boot parameter

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raja-grewal 2025-08-19 11:01:06 +10:00 • committed by GitHub
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10
etc/default/grub.d/40_kernel_hardening.cfg
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@ -118,16 +118,18 @@ GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX vsyscall=none"
## ##
GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX debugfs=off" GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX debugfs=off"
## Force the kernel to panic on "oopses". ## Force the kernel to immediately panic on "oopses".
## Can sometimes potentially indicate and thwart certain kernel exploitation attempts.
## Panics may be due to false-positives such as bad drivers. ## Panics may be due to false-positives such as bad drivers.
## Oopses are serious but non-fatal errors.
## Certain "oopses" can sometimes indicate and thwart potential kernel exploitation attempts.
## Note that by forcing kernel panics on oopses, this exposes the system to targeted denial of service attacks.
## ##
## https://en.wikipedia.org/wiki/Kernel_panic#Linux ## https://en.wikipedia.org/wiki/Kernel_panic#Linux
## https://en.wikipedia.org/wiki/Linux_kernel_oops ## https://en.wikipedia.org/wiki/Linux_kernel_oops
## https://forums.whonix.org/t/set-oops-panic-kernel-parameter-or-kernel-panic-on-oops-1-sysctl-for-better-security/7713 ## https://forums.whonix.org/t/set-oops-panic-kernel-parameter-or-kernel-panic-on-oops-1-sysctl-for-better-security/7713
## ##
## KSPP=partial ## KSPP=yes
## KSPP sets CONFIG_PANIC_ON_OOPS=y, but also requires CONFIG_PANIC_TIMEOUT=-1. ## KSPP sets CONFIG_PANIC_ON_OOPS=y and CONFIG_PANIC_TIMEOUT=-1.
## ##
## See /usr/libexec/security-misc/panic-on-oops for implementation. ## See /usr/libexec/security-misc/panic-on-oops for implementation.
## ##