linux_dsm_epyc7002/tools/perf
Leo Yan ceb75476db perf hists browser: Fix potential NULL pointer dereference found by the smatch tool
Based on the following report from Smatch, fix the potential
NULL pointer dereference check.

  tools/perf/ui/browsers/hists.c:641
  hist_browser__run() error: we previously assumed 'hbt' could be
  null (see line 625)

  tools/perf/ui/browsers/hists.c:3088
  perf_evsel__hists_browse() error: we previously assumed
  'browser->he_selection' could be null (see line 2902)

  tools/perf/ui/browsers/hists.c:3272
  perf_evsel_menu__run() error: we previously assumed 'hbt' could be
  null (see line 3260)

This patch firstly validating the pointers before access them, so can
fix potential NULL pointer dereference.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20190708143937.7722-2-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-07-09 10:13:27 -03:00
..
arch tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
bench perf tools: Use zfree() where applicable 2019-07-09 10:13:27 -03:00
Documentation perf tools: Fix typos / broken sentences 2019-07-02 16:08:16 -03:00
examples/bpf perf augmented_raw_syscalls: Move reading filename to the loop 2019-06-05 09:48:55 -03:00
include/bpf
jvmti tools build: Check if gettid() is available before providing helper 2019-07-07 17:53:09 -03:00
pmu-events perf tools: Use list_del_init() more thorougly 2019-07-09 10:13:27 -03:00
python treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 407 2019-06-05 17:37:14 +02:00
scripts perf scripts python: export-to-postgresql.py: Export Intel PT power and ptwrite events 2019-06-25 08:47:10 -03:00
tests perf tools: Use list_del_init() more thorougly 2019-07-09 10:13:27 -03:00
trace perf trace: Beautify 'sync_file_range' arguments 2019-05-28 18:37:43 -03:00
ui perf hists browser: Fix potential NULL pointer dereference found by the smatch tool 2019-07-09 10:13:27 -03:00
util perf cs-etm: Fix potential NULL pointer dereference found by the smatch 2019-07-09 10:13:27 -03:00
.gitignore
Build
builtin-annotate.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-bench.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-buildid-cache.c
builtin-buildid-list.c
builtin-c2c.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-config.c perf tools: Add missing headers, mostly stdlib.h 2019-07-09 10:13:22 -03:00
builtin-data.c
builtin-diff.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-evlist.c
builtin-ftrace.c perf tools: Use list_del_init() more thorougly 2019-07-09 10:13:27 -03:00
builtin-help.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-inject.c perf inject: The tool->read() call may pass a NULL evsel, handle it 2019-07-09 09:33:55 -03:00
builtin-kallsyms.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 251 2019-06-05 17:30:26 +02:00
builtin-kmem.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-kvm.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-list.c
builtin-lock.c perf tools: Use list_del_init() more thorougly 2019-07-09 10:13:27 -03:00
builtin-mem.c
builtin-probe.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-record.c perf tools: Use zfree() where applicable 2019-07-09 10:13:27 -03:00
builtin-report.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-sched.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-script.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-stat.c perf tools: Use zfree() where applicable 2019-07-09 10:13:27 -03:00
builtin-timechart.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-top.c perf top: Fix potential NULL pointer dereference detected by the smatch tool 2019-07-09 09:33:54 -03:00
builtin-trace.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
builtin-version.c tools build: Implement libzstd feature check, LIBZSTD_DIR and NO_LIBZSTD defines 2019-04-01 15:18:10 -03:00
builtin.h
check-headers.sh tools perf: Move from sane_ctype.h obtained from git to the Linux's original 2019-06-25 21:02:47 -03:00
command-list.txt
CREDITS
design.txt
Makefile
Makefile.config tools build: Check if gettid() is available before providing helper 2019-07-07 17:53:09 -03:00
Makefile.perf Linux 5.2-rc3 2019-06-03 11:56:35 +02:00
MANIFEST tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
perf-archive.sh
perf-completion.sh
perf-read-vdso.c
perf-sys.h
perf-with-kcore.sh Merge branch 'x86/cpu' into perf/core, to pick up dependent changes 2019-06-17 12:29:16 +02:00
perf.c tools lib: Adopt zalloc()/zfree() from tools/perf 2019-07-09 10:13:26 -03:00
perf.h perf tools: Increase MAX_NR_CPUS and MAX_CACHES 2019-06-25 08:47:10 -03:00