linux_dsm_epyc7002/tools/perf
Masami Hiramatsu 12d572e785 perf probe: Fix memory leakage when the probe point is not found
Fix the memory leakage in debuginfo__find_trace_events() when the probe
point is not found in the debuginfo. If there is no probe point found in
the debuginfo, debuginfo__find_probes() will NOT return -ENOENT, but 0.

Thus the caller of debuginfo__find_probes() must check the tf.ntevs and
release the allocated memory for the array of struct probe_trace_event.

The current code releases the memory only if the debuginfo__find_probes()
hits an error but not checks tf.ntevs. In the result, the memory allocated
on *tevs are not released if tf.ntevs == 0.

This fixes the memory leakage by checking tf.ntevs == 0 in addition to
ret < 0.

Fixes: ff74178350 ("perf probe: Introduce debuginfo to encapsulate dwarf information")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lore.kernel.org/lkml/159438668346.62703.10887420400718492503.stgit@devnote2
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-17 09:09:46 -03:00
..
arch perf intel-pt: Add support for text poke events 2020-07-10 08:31:21 -03:00
bench perf tools: Replace zero-length array with flexible-array 2020-05-28 10:03:27 -03:00
Documentation perf script: Add option --show-text-poke-events 2020-07-10 08:31:45 -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 vendor events power9: Added nest imc metric events 2020-07-06 09:38:03 -03:00
python
scripts perf scripts python: exported-sql-viewer.py: Fix time chart call tree 2020-07-03 08:19:52 -03:00
tests perf script: Show text poke address symbol 2020-07-10 08:39:14 -03:00
trace perf beauty: Add support to STATX_MNT_ID in the 'statx' syscall 'mask' argument 2020-06-09 12:40:03 -03:00
ui Merge remote-tracking branch 'torvalds/master' into perf/core 2020-07-08 13:49:15 -03:00
util perf probe: Fix memory leakage when the probe point is not found 2020-07-17 09:09:46 -03:00
.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 tools feature: Rename HAVE_EVENTFD to HAVE_EVENTFD_SUPPORT 2020-05-28 10:03:26 -03:00
builtin-buildid-cache.c
builtin-buildid-list.c
builtin-c2c.c perf evlist: Fix the class prefix for 'struct evlist' sample_type methods 2020-06-22 16:28:09 -03:00
builtin-config.c
builtin-data.c
builtin-diff.c perf evsel: Rename perf_evsel__is_*() to evsel__is*() 2020-05-05 16:35:31 -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: Detect workload failure 2020-05-28 10:03:27 -03:00
builtin-help.c
builtin-inject.c perf inject jit: Remove //anon mmap events 2020-07-08 13:51:12 -03:00
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: Add metrics to command line usage 2020-05-28 10:03:28 -03:00
builtin-lock.c perf lock: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*() 2020-05-05 16:35:31 -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 tools: Add support for PERF_RECORD_TEXT_POKE 2020-07-10 08:20:01 -03:00
builtin-report.c perf evlist: Fix the class prefix for 'struct evlist' branch_type methods 2020-06-22 16:28:10 -03:00
builtin-sched.c perf sched: Rename perf_evsel__*() operating on 'struct evsel *' to evsel__*() 2020-05-05 16:35:31 -03:00
builtin-script.c perf script: Show text poke address symbol 2020-07-10 08:39:14 -03:00
builtin-stat.c perf evlist: Fix the class prefix for 'struct evlist' 'add' evsel methods 2020-06-22 16:28:09 -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 evlist: Fix the class prefix for 'struct evlist' 'add' evsel methods 2020-06-22 16:28:09 -03:00
builtin-trace.c perf evlist: Fix the class prefix for 'struct evlist' strerror methods 2020-06-22 16:28:09 -03:00
builtin-version.c
builtin.h
check-headers.sh perf tools: Grab a copy of libbpf's hashmap 2020-05-28 10:03:26 -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 build: Fix error message when asking for -fsanitize=address without required libraries 2020-06-18 10:34:31 -03:00
Makefile.perf perf tools: Add optional support for libpfm4 2020-05-29 16:51:38 -03:00
MANIFEST
perf-archive.sh
perf-completion.sh
perf-read-vdso.c
perf-sys.h
perf-with-kcore.sh
perf.c
perf.h