================/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_)