SFrame or the Simple Frame format is a stack trace format designed to provide a fast and low-overhead mechanism to generate stack traces. The format keeps track of the minimal necessary information needed for stack tracing: Canonical Frame Address (CFA), Frame Pointer (FP), Return Address (RA). It works with and without frame pointers.

SFrame format and its support was first released with Binutils 2.40. SFrame format is now moving towards its next version (SFRAME_VERSION_2). This talk will discuss the SFrame format briefly, followed by whats coming in its version 2. Since its inception, we’ve started to explore the use case of user space stack tracing in the kernel. This talk will cover the progress, and discuss ideas for further possible use cases around in-application user space stack tracing.

Biography - Indu Bhagat

Indu Bhagat is a member of the Linux Toolchain group at Oracle. Recently, she has been actively working on the SFrame stack trace format. Previously, she has contributed to the CTF/BTF support in the GNU Toolchain.

Biography - Jose E. Marchesi

GNU hacker and maintainer. Main author and maintainer of GNU poke and GNU recutils. Target maintainer in binutils (BPF, SPARC), GCC (BPF), GDB (BPF) and elfutils (BPF, SPARC). CGEN global maintainer. Member of the GNU Advisory Committee. Authorized speaker of the GNU Project. Helps with GNU maintainers coordination, the GNU software evaluation team, organization of GNU Hackers Meetings, Toolchain MCs/Tracks at LPC, GNU Tools Cauldron, GNU org admin for Google’s Summer of Code, and several other random janitorial duties. Contributor to several other free software programs over the years such as Emacs, glibc, gnulib, the Linux kernel, etc. Currently employed by Oracle as the Tech Lead of their Toolchain/Compilers team.