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Riccardo Mancini f21987d7bb perf map: Fix dso->nsinfo refcounting 
[ Upstream commit 2d6b74baa7 ]

ASan reports a memory leak of nsinfo during the execution of

  # perf test "31: Lookup mmap thread"

The leak is caused by a refcounted variable being replaced without
dropping the refcount.

This patch makes sure that the refcnt of nsinfo is decreased whenever a
refcounted variable is replaced with a new value.

Signed-off-by: Riccardo Mancini <rickyman7@gmail.com>
Fixes: bf2e710b3c ("perf maps: Lookup maps in both intitial mountns and inner mountns.")
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Krister Johansen <kjlx@templeofstupid.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/55223bc8821b34ccb01f92ef1401c02b6a32e61f.1626343282.git.rickyman7@gmail.com
[ Split from a larger patch ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-28 14:35:34 +02:00
..
arch perf test: Avoid an msan warning in a copied stack. 2020-11-16 14:10:58 -03:00
bench tools arch: Update arch/x86/lib/mem{cpy,set}_64.S copies used in 'perf bench mem memcpy' 2020-11-12 17:55:41 -03:00
Documentation perf c2c: Update documentation for metrics reorganization 2020-10-15 12:02:12 -03:00
examples/bpf
include/bpf
jvmti perf jvmti: Remove redundant jitdump line table entries 2020-05-29 16:51:38 -03:00
pmu-events perf jevents: Fix getting maximum number of fds 2021-06-03 09:00:39 +02:00
python tweewide: Fix most Shebang lines 2021-05-22 11:40:55 +02:00
scripts perf scripts python: exported-sql-viewer.py: Fix warning display 2021-06-03 09:00:28 +02:00
tests perf test bpf: Free obj_buf 2021-07-25 14:36:21 +02:00
trace perf beauty: Update copy of linux/socket.h with the kernel sources 2021-06-23 14:42:54 +02:00
ui perf hists browser: Increase size of 'buf' in perf_evsel__hists_browse() 2020-11-03 09:11:45 -03:00
util perf map: Fix dso->nsinfo refcounting 2021-07-28 14:35:34 +02:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Build
builtin-annotate.c perf evsel: Rename perf_evsel__resort*() to evsel__resort*() 2020-05-28 10:03:24 -03:00
builtin-bench.c perf bench: Add build-id injection benchmark 2020-10-13 10:59:42 -03:00
builtin-buildid-cache.c perf tools: Pass build_id object to build_id__sprintf() 2020-10-14 08:46:22 -03:00
builtin-buildid-list.c
builtin-c2c.c perf c2c: Add metrics "RMT Load Hit" 2020-10-15 09:34:51 -03:00
builtin-config.c
builtin-data.c perf data: Add support to store time of day in CTF data conversion 2020-08-06 09:43:37 -03:00
builtin-diff.c perf diff: Fix error return value in __cmd_diff() 2020-11-27 14:21:23 -03:00
builtin-evlist.c perf evsel: Rename perf_evsel__fprintf() to evsel__fprintf() 2020-05-28 10:03:24 -03:00
builtin-ftrace.c perf ftrace: Fix access to pid in array when setting a pid filter 2021-05-07 11:04:31 +02:00
builtin-help.c
builtin-inject.c perf inject: Fix dso->nsinfo refcounting 2021-07-28 14:35:34 +02:00
builtin-kallsyms.c
builtin-kmem.c perf kmem: Pass additional arguments to 'perf record' 2020-07-10 09:37:55 -03:00
builtin-kvm.c perf evlist: Fix the class prefix for 'struct evlist' 'add' evsel methods 2020-06-22 16:28:09 -03:00
builtin-list.c perf list: Remove dead code in argument check 2020-09-09 11:12:10 -03:00
builtin-lock.c perf lock: Don't free "lock_seq_stat" if read_count isn't zero 2020-11-12 17:55:41 -03:00
builtin-mem.c perf c2c: Fix 'perf c2c record -e list' to show the default events used 2020-05-28 10:03:25 -03:00
builtin-probe.c perf probe: Do not show the skipped events 2020-05-28 10:03:24 -03:00
builtin-record.c perf record: Fix continue profiling after draining the buffer 2021-03-04 11:38:09 +01:00
builtin-report.c perf report: Disable ordered_events for raw dump 2020-09-01 12:20:25 -03:00
builtin-sched.c perf sched: Show start of latency as well 2020-10-13 11:01:42 -03:00
builtin-script.c perf script: Display negative tid in non-sample events 2020-09-17 16:06:22 -03:00
builtin-stat.c perf tools: Allow creation of cgroup without open 2020-09-28 09:18:06 -03:00
builtin-timechart.c perf tools: Replace zero-length array with flexible-array 2020-05-28 10:03:27 -03:00
builtin-top.c perf top: Skip side-band event setup if HAVE_LIBBPF_SUPPORT is not set 2020-08-21 10:22:23 -03:00
builtin-trace.c perf trace: Fix segfault when trying to trace events by cgroup 2020-11-03 08:31:03 -03:00
builtin-version.c perf tools: Make GTK2 support opt-in 2020-09-04 17:11:59 -03:00
builtin.h
check-headers.sh perf tools: Separate the checking of headers only used to build beautification tables 2020-09-29 08:56:38 -03:00
command-list.txt
CREDITS
design.txt perf tools: Support CAP_PERFMON capability 2020-04-16 12:19:08 -03:00
Makefile
Makefile.config perf tools: Fix dynamic libbpf link 2021-05-19 10:13:13 +02:00
Makefile.perf perf build: Fix ccache usage in $(CC) when generating arch errno table 2021-03-17 17:06:16 +01:00
MANIFEST
perf-archive.sh
perf-completion.sh
perf-read-vdso.c
perf-sys.h perf tests: Call test_attr__open() directly 2020-09-10 11:55:37 -03:00
perf-with-kcore.sh
perf.c
perf.h