mirror of
git://git.yoctoproject.org/linux-yocto.git
synced 2025-07-19 03:59:45 +02:00
39cf650d68
Rather than calling readelf several times for each invocation of __faddr2line, call readelf only three times at the beginning, and save its result for future use. Signed-off-by: Brian Johannesmeyer <bjohannesmeyer@gmail.com> Link: https://lore.kernel.org/r/20240415145538.1938745-2-bjohannesmeyer@gmail.com Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
8.7 KiB
Executable File
8.7 KiB
Executable File
#!/bin/bash
SPDX-License-Identifier: GPL-2.0
Translate stack dump function offsets.
addr2line doesn't work with KASLR addresses. This works similarly to
addr2line, but instead takes the 'func+0x123' format as input:
$ ./scripts/faddr2line ~/k/vmlinux meminfo_proc_show+0x5/0x568
meminfo_proc_show+0x5/0x568:
meminfo_proc_show at fs/proc/meminfo.c:27
If the address is part of an inlined function, the full inline call chain is
printed:
$ ./scripts/faddr2line ~/k/vmlinux native_write_msr+0x6/0x27
native_write_msr+0x6/0x27:
arch_static_branch at arch/x86/include/asm/msr.h:121
(inlined by) static_key_false at include/linux/jump_label.h:125
(inlined by) native_write_msr at arch/x86/include/asm/msr.h:125
The function size after the '/' in the input is optional, but recommended.
It's used to help disambiguate any duplicate symbol names, which can occur
rarely. If the size is omitted for a duplicate symbol then it's possible for
multiple code sites to be printed:
$ ./scripts/faddr2line ~/k/vmlinux raw_ioctl+0x5
raw_ioctl+0x5/0x20:
raw_ioctl at drivers/char/raw.c:122
raw_ioctl+0x5/0xb1:
raw_ioctl at net/ipv4/raw.c:876
Multiple addresses can be specified on a single command line:
$ ./scripts/faddr2line ~/k/vmlinux type_show+0x10/45 free_reserved_area+0x90
type_show+0x10/0x2d:
type_show at drivers/video/backlight/backlight.c:213
free_reserved_area+0x90/0x123:
free_reserved_area at mm/page_alloc.c:6429 (discriminator 2)
set -o errexit set -o nounset
usage() { echo "usage: faddr2line [--list]