linux-kernel - [PATCH 0/2] Minor fixes error handling of perf stat

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240830103116.2117896-1-yeoreum.yun@arm.com>
Date: Fri, 30 Aug 2024 11:31:14 +0100
From: Levi Yun <yeoreum.yun@....com>
To: peterz@...radead.org,
	mingo@...hat.com,
	acme@...nel.org,
	namhyung@...nel.org,
	mark.rutland@....com,
	alexander.shishkin@...ux.intel.com,
	jolsa@...nel.org,
	irogers@...gle.com,
	adrian.hunter@...el.com,
	kan.liang@...ux.intel.com,
	james.clark@...aro.org,
	asmadeus@...ewreck.org,
	yangjihong1@...wei.com
Cc: linux-perf-users@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Levi Yun <yeoreum.yun@....com>
Subject: [PATCH 0/2] Minor fixes error handling of perf stat

This patchset fixes two issues that were seen when running
  "perf stat -r" with perf_event_paranoid=3

   1. failed with Too many open files.
     $ perf stat -r 1044 -- false
     ...
     failed to create 'go' pipe: Too many open files
     failed to prepare workload: Too many open files
     ...

   2. repating error message
     $ perf stat -r 1044 -- false
     Error:
     Access to performance monitoring and observability operations is limited.
     ...
     (repating with same error message 1044 times).


Levi Yun (2):
  perf stat: Close cork_fd when create_perf_stat_counter() failed
  perf stat: Stop repeating when ref_perf_stat() returns -1

 tools/perf/builtin-stat.c | 11 ++++++++++-
 tools/perf/util/evlist.c  | 14 +++++++++++++-
 tools/perf/util/evlist.h  |  1 +
 3 files changed, 24 insertions(+), 2 deletions(-)

--
LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}