Something went wrong. Try again.
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Something went wrong. Try again.
1.7 kB · 52 lines
at master
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253================/proc/sys/debug/================
These files show up in ``/proc/sys/debug/``, depending on thekernel configuration:
.. contents:: :local:
exception-trace===============
This flag controls whether the kernel prints information about unhandledsignals (like segmentation faults) to the kernel log (``dmesg``).
- ``0``: Unhandled signals are not traced.- ``1``: Information about unhandled signals is printed.
The default value is ``1`` on most architectures (like x86, MIPS, RISC-V),but it is ``0`` on **arm64**.
The actual information printed and the context provided variessignificantly depending on the CPU architecture. For example:
- On **x86**, it typically prints the instruction pointer (IP), error code, and address that caused a page fault.- On **PowerPC**, it may print the next instruction pointer (NIP), link register (LR), and other relevant registers.
When enabled, this feature is often rate-limited to prevent the kernellog from being flooded during a crash loop.
kprobes-optimization====================
This flag enables or disables the optimization of Kprobes on certainarchitectures (like x86).
- ``0``: Kprobes optimization is turned off.- ``1``: Kprobes optimization is turned on (default).
For more details on Kprobes and its optimization, please refer toDocumentation/trace/kprobes.rst.
Copyright (c) 2026, Shubham Chakraborty <chakrabortyshubham66@gmail.com>
For general info and legal blurb, please look inDocumentation/admin-guide/sysctl/index.rst.
.. See scripts/check-sysctl-docs to keep this up to date:.. scripts/check-sysctl-docs -vtable="debug" \.. $(git grep -l register_sysctl_)