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Veronika Molnarova 37e2a19c98 perf test pmu: Set uninitialized PMU alias to null 
Commit 3e0bf9fde2 ("perf pmu: Restore full PMU name wildcard
support") adds a test case "PMU cmdline match" that covers PMU name
wildcard support provided by function perf_pmu__match().

The test works with a wide range of supported combinations of PMU name
matching but omits the case that if the perf_pmu__match() cannot match
the PMU name to the wildcard, it tries to match its alias. However, this
variable is not set up, causing the test case to fail when run with
subprocesses or to segfault if run as a single process.

  ./perf test -vv 9
    9: Sysfs PMU tests                                :
    9.1: Parsing with PMU format directory            : Ok
    9.2: Parsing with PMU event                       : Ok
    9.3: PMU event names                              : Ok
    9.4: PMU name combining                           : Ok
    9.5: PMU name comparison                          : Ok
    9.6: PMU cmdline match                            : FAILED!

  ./perf test -F 9
    9.1: Parsing with PMU format directory            : Ok
    9.2: Parsing with PMU event                       : Ok
    9.3: PMU event names                              : Ok
    9.4: PMU name combining                           : Ok
    9.5: PMU name comparison                          : Ok
  Segmentation fault (core dumped)

Initialize the PMU alias to null for all tests of perf_pmu__match()
as this functionality is not being tested and the alias matching works
exactly the same as the matching of the PMU name.

./perf test -F 9
  9.1: Parsing with PMU format directory                             : Ok
  9.2: Parsing with PMU event                                        : Ok
  9.3: PMU event names                                               : Ok
  9.4: PMU name combining                                            : Ok
  9.5: PMU name comparison                                           : Ok
  9.6: PMU cmdline match                                             : Ok

Fixes: 3e0bf9fde2 ("perf pmu: Restore full PMU name wildcard support")
Signed-off-by: Veronika Molnarova <vmolnaro@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Radostin Stoyanov <rstoyano@redhat.com>
Link: https://lore.kernel.org/r/20240808103749.9356-1-vmolnaro@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2024-08-08 11:01:54 -03:00
arch X86 fixes: 2024-08-04 08:57:08 -07:00
block block: fix deadlock between sd_remove & sd_release 2024-07-24 09:51:21 -06:00
certs kbuild: use $(src) instead of $(srctree)/$(src) for source directory 2024-05-10 04:34:52 +09:00
crypto crypto: testmgr - generate power-of-2 lengths more often 2024-07-13 11:50:28 +12:00
Documentation platform-drivers-x86 for v6.11-2 2024-08-06 07:52:10 -07:00
drivers platform-drivers-x86 for v6.11-2 2024-08-06 07:52:10 -07:00
fs 'smb3 client fixes 2024-08-04 08:18:40 -07:00
include profiling: remove profile=sleep support 2024-08-04 13:36:28 -07:00
init rust: SHADOW_CALL_STACK is incompatible with Rust 2024-08-01 16:15:03 +01:00
io_uring io_uring: remove unused local list heads in NAPI functions 2024-07-30 06:20:20 -06:00
ipc sysctl: treewide: constify the ctl_table argument of proc_handlers 2024-07-24 20:59:29 +02:00
kernel profiling: remove profile=sleep support 2024-08-04 13:36:28 -07:00
lib minmax: don't use max() in situations that want a C constant expression 2024-07-28 20:23:27 -07:00
LICENSES LICENSES: Add the copyleft-next-0.3.1 license 2022-11-08 15:44:01 +01:00
mm slab fixes for 6.11-rc2 2024-08-05 09:23:00 -07:00
net Including fixes from wireless, bleutooth, BPF and netfilter. 2024-08-01 09:42:09 -07:00
rust Rust changes for v6.11 2024-07-27 13:44:54 -07:00
samples Driver core changes for 6.11-rc1 2024-07-25 10:42:22 -07:00
scripts syscalls: fix syscall macros for newfstat/newfstatat 2024-08-02 15:20:47 +02:00
security apparmor-pr-2024-07-24 PR 2024-07-25 2024-07-27 13:28:39 -07:00
sound sound fixes for 6.11-rc2 2024-08-02 09:04:57 -07:00
tools perf test pmu: Set uninitialized PMU alias to null 2024-08-08 11:01:54 -03:00
usr initramfs: shorten cmd_initfs in usr/Makefile 2024-07-16 01:07:52 +09:00
virt KVM: guest_memfd: abstract how prepared folios are recorded 2024-07-26 14:46:15 -04:00
.clang-format Docs: Move clang-format from process/ to dev-tools/ 2024-06-26 16:36:00 -06:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.editorconfig .editorconfig: remove trim_trailing_whitespace option 2024-06-13 16:47:52 +02:00
.get_maintainer.ignore Add Jeff Kirsher to .get_maintainer.ignore 2024-03-08 11:36:54 +00:00
.gitattributes .gitattributes: set diff driver for Rust source code files 2023-05-31 17:48:25 +02:00
.gitignore kbuild: add script and target to generate pacman package 2024-07-22 01:24:22 +09:00
.mailmap MAINTAINERS: mailmap: update James Clark's email address 2024-07-26 14:32:35 -07:00
.rustfmt.toml rust: add .rustfmt.toml 2022-09-28 09:02:20 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS tracing: Update of MAINTAINERS and CREDITS file 2024-07-18 14:08:42 -07:00
Kbuild Kbuild updates for v6.1 2022-10-10 12:00:45 -07:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Including fixes from wireless, bleutooth, BPF and netfilter. 2024-08-01 09:42:09 -07:00
Makefile Linux 6.11-rc2 2024-08-04 13:50:53 -07:00
README README: Fix spelling 2024-03-18 03:36:32 -06:00

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 reStructuredText 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.