362f9c907f
Fixes an issue where an incorrect filename was added in the DWARF line table of an ELF object file when calling 'perf inject --jit' due to not checking the filename of a debug entry against the repeated name marker (/xff/0). The marker is mentioned in the tools/perf/util/jitdump.h header, which describes the jitdump binary format, and indicitates that the filename in a debug entry is the same as the previous enrty. In the function emit_lineno_info(), in the file tools/perf/util/genelf-debug.c, the debug entry filename gets compared to the previous entry filename. If they are not the same, a new filename is added to the DWARF line table. However, since there is no check against '\xff\0', in some cases '\xff\0' is inserted as the filename into the DWARF line table. This can be seen with `objdump --dwarf=line` on the ELF file after `perf inject --jit`. It also makes no source code information show up in 'perf annotate'. Signed-off-by: Elisabeth Panholzer <elisabeth@leaningtech.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20230602123815.255001-1-paniii94@gmail.com [ Fixed a trailing white space, removed a subject prefix ] Signed-off-by: Namhyung Kim <namhyung@kernel.org> |
||
|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
README
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.