linux-kernel - [PATCH v2 0/2] scripts/gdb/symbols: make BPF debug info available to GDB

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Message-ID: <20251106124600.86736-1-iii@linux.ibm.com>
Date: Thu,  6 Nov 2025 13:43:40 +0100
From: Ilya Leoshkevich <iii@...ux.ibm.com>
To: Jan Kiszka <jan.kiszka@...mens.com>, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>,
        Kieran Bingham <kbingham@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, bpf@...r.kernel.org,
        Heiko Carstens <hca@...ux.ibm.com>, Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Ilya Leoshkevich <iii@...ux.ibm.com>
Subject: [PATCH v2 0/2] scripts/gdb/symbols: make BPF debug info available to GDB

v1: https://lore.kernel.org/bpf/20250710115920.47740-1-iii@linux.ibm.com/
v1 -> v2: Hide the feature behind the -bpf flag for performance reasons
          (Jan).
          Fix running lx-symbols twice.


Hi,

This series greatly simplifies debugging BPF progs when using QEMU
gdbstub by providing symbol names, sizes, and line numbers to GDB.

Patch 1 adds radix tree iteration, which is necessary for parsing
prog_idr. Patch 2 is the actual implementation; its description
contains some details on how to use this.

Best regards,
Ilya

Ilya Leoshkevich (2):
  scripts/gdb/radix-tree: add lx-radix-tree-command
  scripts/gdb/symbols: make BPF debug info available to GDB

 scripts/gdb/linux/bpf.py          | 253 ++++++++++++++++++++++++++++++
 scripts/gdb/linux/constants.py.in |   3 +
 scripts/gdb/linux/radixtree.py    | 139 +++++++++++++++-
 scripts/gdb/linux/symbols.py      | 105 +++++++++++--
 4 files changed, 481 insertions(+), 19 deletions(-)
 create mode 100644 scripts/gdb/linux/bpf.py

-- 
2.51.1