AcoSail/kernel_optimize_test
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kernel_optimize_test/tools/perf/tests
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Ian Rogers e3e2cf3d5b perf tests: Avoid raising SEGV using an obvious NULL dereference 
An optimized build such as:

  make -C tools/perf CLANG=1 CC=clang EXTRA_CFLAGS="-O3

will turn the dereference operation into a ud2 instruction, raising a
SIGILL rather than a SIGSEGV. Use raise(..) for correctness and clarity.

Similar issues were addressed in Numfor Mbiziwo-Tiapo's patch:

  https://lkml.org/lkml/2019/7/8/1234

Committer testing:

Before:

  [root@quaco ~]# perf test hooks
  55: perf hooks                                            : Ok
  [root@quaco ~]# perf test -v hooks
  55: perf hooks                                            :
  --- start ---
  test child forked, pid 17092
  SIGSEGV is observed as expected, try to recover.
  Fatal error (SEGFAULT) in perf hook 'test'
  test child finished with 0
  ---- end ----
  perf hooks: Ok
  [root@quaco ~]#

After:

  [root@quaco ~]# perf test hooks
  55: perf hooks                                            : Ok
  [root@quaco ~]# perf test -v hooks
  55: perf hooks                                            :
  --- start ---
  test child forked, pid 17909
  SIGSEGV is observed as expected, try to recover.
  Fatal error (SEGFAULT) in perf hook 'test'
  test child finished with 0
  ---- end ----
  perf hooks: Ok
  [root@quaco ~]#

Fixes: a074865e60 ("perf tools: Introduce perf hooks")
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lore.kernel.org/lkml/20190925195924.152834-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-09-27 09:26:14 -03:00
..
attr perf tools: Save bpf_prog_info and BTF of new BPF programs 2019-03-21 11:27:04 -03:00
shell perf tests: Fixes hang in zstd compression test by changing the source of random data 2019-08-26 11:58:29 -03:00
.gitignore
attr.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
attr.py perf script python: Add Python3 support to tests/attr.py 2019-02-05 10:31:08 -03:00
backward-ring-buffer.c libperf: Move 'nr_mmaps' from 'struct evlist' to 'struct perf_evlist' 2019-09-25 09:51:47 -03:00
bitmap.c perf env: Remove needless cpumap.h header 2019-09-20 09:19:21 -03:00
bp_account.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
bp_signal_overflow.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
bp_signal.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
bpf-script-example.c perf tests: Add missing SPDX headers 2019-06-17 15:57:19 -03:00
bpf-script-test-kbuild.c perf tests: Add missing SPDX headers 2019-06-17 15:57:19 -03:00
bpf-script-test-prologue.c perf tests: Add missing SPDX headers 2019-06-17 15:57:19 -03:00
bpf-script-test-relocation.c perf tests: Add missing SPDX headers 2019-06-17 15:57:19 -03:00
bpf.c libperf: Move 'nr_mmaps' from 'struct evlist' to 'struct perf_evlist' 2019-09-25 09:51:47 -03:00
Build perf tests: Add missing SPDX headers 2019-06-17 15:57:19 -03:00
builtin-test.c perf auxtrace: Uninline functions that touch perf_session 2019-08-31 22:24:10 -03:00
clang.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
code-reading.c libperf: Add perf_evlist__first()/last() functions 2019-09-25 09:51:48 -03:00
cpumap.c perf tools: Move event synthesizing routines to separate header 2019-09-20 09:19:22 -03:00
dso-data.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
dwarf-unwind.c perf tools: Move event synthesizing routines to separate header 2019-09-20 09:19:22 -03:00
event_update.c libperf: Add perf_evlist__id_add() function 2019-09-25 09:51:48 -03:00
event-times.c libperf: Add perf_evlist__first()/last() functions 2019-09-25 09:51:48 -03:00
evsel-roundtrip-name.c libperf: Add perf_evlist__first()/last() functions 2019-09-25 09:51:48 -03:00
evsel-tp-sched.c perf evsel: Rename perf_evsel__delete() to evsel__delete() 2019-07-29 18:34:43 -03:00
expr.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
fdarray.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hists_common.c perf tools: Move event synthesizing routines to separate header 2019-09-20 09:19:22 -03:00
hists_common.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hists_cumulate.c libperf: Add perf_evlist__first()/last() functions 2019-09-25 09:51:48 -03:00
hists_filter.c perf tools: Remove needless thread.h include directives 2019-08-31 22:24:10 -03:00
hists_link.c libperf: Add perf_evlist__first()/last() functions 2019-09-25 09:51:48 -03:00
hists_output.c libperf: Add perf_evlist__first()/last() functions 2019-09-25 09:51:48 -03:00
is_printable_array.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
keep-tracking.c libperf: Add perf_evlist__first()/last() functions 2019-09-25 09:51:48 -03:00
kmod-path.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
llvm.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
llvm.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
make perf tests: Fix static build test 2019-09-20 14:37:28 -03:00
map_groups.c perf tests: Add missing SPDX headers 2019-06-17 15:57:19 -03:00
mem.c perf symbols: Move mem_info and branch_info out of symbol.h 2019-08-31 22:27:48 -03:00
mem2node.c perf env: Remove needless cpumap.h header 2019-09-20 09:19:21 -03:00
mmap-basic.c perf evlist: Adopt backwards ring buffer state enum 2019-09-25 09:51:45 -03:00
mmap-thread-lookup.c libperf: Move 'page_size' global variable to libperf 2019-09-25 09:51:48 -03:00
openat-syscall-all-cpus.c perf env: Remove needless cpumap.h header 2019-09-20 09:19:21 -03:00
openat-syscall-tp-fields.c libperf: Add perf_evlist__poll() function 2019-09-25 09:51:49 -03:00
openat-syscall.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
parse-events.c libperf: Add perf_evlist__first()/last() functions 2019-09-25 09:51:48 -03:00
parse-no-sample-id-all.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
perf-hooks.c perf tests: Avoid raising SEGV using an obvious NULL dereference 2019-09-27 09:26:14 -03:00
perf-record.c libperf: Add perf_evlist__poll() function 2019-09-25 09:51:49 -03:00
perf-targz-src-pkg License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pmu.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
python-use.c perf test: Use header file util/debug.h 2018-06-04 10:28:53 -03:00
sample-parsing.c perf tools: Move event synthesizing routines to separate header 2019-09-20 09:19:22 -03:00
sdt.c perf tools: No need to include internal/lib.h from util/util.h 2019-09-25 09:51:48 -03:00
stat.c perf tools: Move event synthesizing routines to separate header 2019-09-20 09:19:22 -03:00
sw-clock.c perf evlist: Adopt backwards ring buffer state enum 2019-09-25 09:51:45 -03:00
switch-tracking.c libperf: Add perf_evlist__first()/last() functions 2019-09-25 09:51:48 -03:00
task-exit.c libperf: Add perf_evlist__poll() function 2019-09-25 09:51:49 -03:00
tests.h perf tests: Add a test for time-utils 2019-06-10 16:20:12 -03:00
thread-map.c perf tools: Move event synthesizing routines to separate header 2019-09-20 09:19:22 -03:00
thread-mg-share.c perf tools: Remove needless map.h include directives 2019-08-31 22:24:10 -03:00
time-utils-test.c perf evlist: Rename struct perf_evlist to struct evlist 2019-07-29 18:34:42 -03:00
topology.c perf session: Return error code for perf_session__new() function on failure 2019-09-20 15:58:11 -03:00
unit_number__scnprintf.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
vmlinux-kallsyms.c libperf: Move 'page_size' global variable to libperf 2019-09-25 09:51:48 -03:00
wp.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00