kernel/linux.git/tools/perf/tests, branch v5.4.185

perf tests: Remove bash construct from record+zstd_comp_decomp.sh

2021-11-26T09:47:18+00:00

[ Upstream commit a9cdc1c5e3700a5200e5ca1f90b6958b6483845b ] Commit 463538a383a2 ("perf tests: Fix test 68 zstd compression for s390") inadvertently removed the -g flag from all platforms rather than just s390, because the [[ ]] construct fails in sh. Changing to single brackets restores testing of call graphs and removes the following error from the output: $ ./perf test -v 85 85: Zstd perf.data compression/decompression : --- start --- test child forked, pid 50643 Collecting compressed record file: ./tests/shell/record+zstd_comp_decomp.sh: 15: [[: not found Fixes: 463538a383a2 ("perf tests: Fix test 68 zstd compression for s390") Signed-off-by: James Clark Cc: Alexander Shishkin Cc: Florian Fainelli Cc: Ian Rogers Cc: Jiri Olsa Cc: John Fastabend Cc: KP Singh Cc: Mark Rutland Cc: Martin KaFai Lau Cc: Namhyung Kim Cc: Song Liu Cc: Sumanth Korikkar Cc: Thomas Richter Cc: Yonghong Song Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: https://lore.kernel.org/r/20211028134828.65774-3-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf test event_update: Fix memory leak of evlist

2021-07-28T11:30:54+00:00

[ Upstream commit fc56f54f6fcd5337634f4545af6459613129b432 ] ASan reports a memory leak when running: # perf test "49: Synthesize attr update" Caused by evlist not being deleted. This patch adds the missing evlist__delete and removes the perf_cpu_map__put since it's already being deleted by evlist__delete. Signed-off-by: Riccardo Mancini Fixes: a6e5281780d1da65 ("perf tools: Add event_update event unit type") Cc: Ian Rogers Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/f7994ad63d248f7645f901132d208fadf9f2b7e4.1626343282.git.rickyman7@gmail.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf test session_topology: Delete session->evlist

2021-07-28T11:30:54+00:00

[ Upstream commit 233f2dc1c284337286f9a64c0152236779a42f6c ] ASan reports a memory leak related to session->evlist while running: # perf test "41: Session topology". When perf_data is in write mode, session->evlist is owned by the caller, which should also take care of deleting it. This patch adds the missing evlist__delete(). Signed-off-by: Riccardo Mancini Fixes: c84974ed9fb67293 ("perf test: Add entry to test cpu topology") Cc: Ian Rogers Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/822f741f06eb25250fb60686cf30a35f447e9e91.1626343282.git.rickyman7@gmail.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf test bpf: Free obj_buf

2021-07-25T12:35:15+00:00

commit 937654ce497fb6e977a8c52baee5f7d9616302d9 upstream. ASan reports some memory leaks when running: # perf test "42: BPF filter" The first of these leaks is caused by obj_buf never being deallocated in __test__bpf. This patch adds the missing free. Signed-off-by: Riccardo Mancini Fixes: ba1fae431e74bb42 ("perf test: Add 'perf test BPF'") Cc: Ian Rogers Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wang Nan Link: http://lore.kernel.org/lkml/60f3ca935fe6672e7e866276ce6264c9e26e4c87.1626343282.git.rickyman7@gmail.com [ Added missing stdlib.h include ] Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman

perf test: Fix unaligned access in sample parsing test

2021-03-04T09:26:35+00:00

[ Upstream commit c5c97cadd7ed13381cb6b4bef5c841a66938d350 ] The ubsan reported the following error. It was because sample's raw data missed u32 padding at the end. So it broke the alignment of the array after it. The raw data contains an u32 size prefix so the data size should have an u32 padding after 8-byte aligned data. 27: Sample parsing :util/synthetic-events.c:1539:4: runtime error: store to misaligned address 0x62100006b9bc for type '__u64' (aka 'unsigned long long'), which requires 8 byte alignment 0x62100006b9bc: note: pointer points here 00 00 00 00 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ #0 0x561532a9fc96 in perf_event__synthesize_sample util/synthetic-events.c:1539:13 #1 0x5615327f4a4f in do_test tests/sample-parsing.c:284:8 #2 0x5615327f3f50 in test__sample_parsing tests/sample-parsing.c:381:9 #3 0x56153279d3a1 in run_test tests/builtin-test.c:424:9 #4 0x56153279c836 in test_and_print tests/builtin-test.c:454:9 #5 0x56153279b7eb in __cmd_test tests/builtin-test.c:675:4 #6 0x56153279abf0 in cmd_test tests/builtin-test.c:821:9 #7 0x56153264e796 in run_builtin perf.c:312:11 #8 0x56153264cf03 in handle_internal_command perf.c:364:8 #9 0x56153264e47d in run_argv perf.c:408:2 #10 0x56153264c9a9 in main perf.c:538:3 #11 0x7f137ab6fbbc in __libc_start_main (/lib64/libc.so.6+0x38bbc) #12 0x561532596828 in _start ... SUMMARY: UndefinedBehaviorSanitizer: misaligned-pointer-use util/synthetic-events.c:1539:4 in Fixes: 045f8cd8542d ("perf tests: Add a sample parsing test") Signed-off-by: Namhyung Kim Acked-by: Adrian Hunter Cc: Alexander Shishkin Cc: Andi Kleen Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mark Rutland Cc: Peter Zijlstra Cc: Stephane Eranian Link: https://lore.kernel.org/r/20210214091638.519643-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf test session topology: Fix data path

2020-10-14T08:32:59+00:00

commit dbd660e6b2884b864d2642d930a163d3bcebe4be upstream. Commit 2d4f27999b88 ("perf data: Add global path holder") missed path conversion in tests/topology.c, causing the "Session topology" testcase to "hang" (waits forever for input from stdin) when doing "ssh $VM perf test". Can be reproduced by running "cat | perf test topo", and crashed by replacing cat with true: $ true | perf test -v topo 40: Session topology : --- start --- test child forked, pid 3638 templ file: /tmp/perf-test-QPvAch incompatible file format incompatible file format (rerun with -v to learn more) free(): invalid pointer test child interrupted ---- end ---- Session topology: FAILED! Committer testing: Reproduced the above result before the patch and after it is back working: # true | perf test -v topo 41: Session topology : --- start --- test child forked, pid 19374 templ file: /tmp/perf-test-YOTEQg CPU 0, core 0, socket 0 CPU 1, core 1, socket 0 CPU 2, core 2, socket 0 CPU 3, core 3, socket 0 CPU 4, core 0, socket 0 CPU 5, core 1, socket 0 CPU 6, core 2, socket 0 CPU 7, core 3, socket 0 test child finished with 0 ---- end ---- Session topology: Ok # Fixes: 2d4f27999b88 ("perf data: Add global path holder") Signed-off-by: Tommi Rantala Tested-by: Arnaldo Carvalho de Melo Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Mamatha Inamdar Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Ravi Bangoria Link: http://lore.kernel.org/lkml/20200423115341.562782-1-tommi.t.rantala@nokia.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Greg Kroah-Hartman

perf tests: Fix test 68 zstd compression for s390

2020-10-01T11:18:11+00:00

[ Upstream commit 463538a383a27337cb83ae195e432a839a52d639 ] Commit 5aa98879efe7 ("s390/cpum_sf: prohibit callchain data collection") prohibits call graph sampling for hardware events on s390. The information recorded is out of context and does not match. On s390 this commit now breaks test case 68 Zstd perf.data compression/decompression. Therefore omit call graph sampling on s390 in this test. Output before: [root@t35lp46 perf]# ./perf test -Fv 68 68: Zstd perf.data compression/decompression : --- start --- Collecting compressed record file: Error: cycles: PMU Hardware doesn't support sampling/overflow-interrupts. Try 'perf stat' ---- end ---- Zstd perf.data compression/decompression: FAILED! [root@t35lp46 perf]# Output after: [root@t35lp46 perf]# ./perf test -Fv 68 68: Zstd perf.data compression/decompression : --- start --- Collecting compressed record file: 500+0 records in 500+0 records out 256000 bytes (256 kB, 250 KiB) copied, 0.00615638 s, 41.6 MB/s [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.004 MB /tmp/perf.data.X3M, compressed (original 0.002 MB, ratio is 3.609) ] Checking compressed events stats: # compressed : Zstd, level = 1, ratio = 4 COMPRESSED events: 1 2ELIFREPh---- end ---- Zstd perf.data compression/decompression: Ok [root@t35lp46 perf]# Signed-off-by: Thomas Richter Reviewed-by: Sumanth Korikkar Cc: Heiko Carstens Cc: Sven Schnelle Cc: Vasily Gorbik Link: http://lore.kernel.org/lkml/20200729135314.91281-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf test: Fix test trace+probe_vfs_getname.sh on s390

2020-10-01T11:17:34+00:00

[ Upstream commit 2bbc83537614517730e9f2811195004b712de207 ] This test places a kprobe to function getname_flags() in the kernel which has the following prototype: struct filename *getname_flags(const char __user *filename, int flags, int *empty) The 'filename' argument points to a filename located in user space memory. Looking at commit 88903c464321c ("tracing/probe: Add ustring type for user-space string") the kprobe should indicate that user space memory is accessed. Output before: [root@m35lp76 perf]# ./perf test 66 67 66: Use vfs_getname probe to get syscall args filenames : FAILED! 67: Check open filename arg using perf trace + vfs_getname: FAILED! [root@m35lp76 perf]# Output after: [root@m35lp76 perf]# ./perf test 66 67 66: Use vfs_getname probe to get syscall args filenames : Ok 67: Check open filename arg using perf trace + vfs_getname: Ok [root@m35lp76 perf]# Comments from Masami Hiramatsu: This bug doesn't happen on x86 or other archs on which user address space and kernel address space is the same. On some arches (ppc64 in this case?) user address space is partially or completely the same as kernel address space. (Yes, they switch the world when running into the kernel) In this case, we need to use different data access functions for each space. That is why I introduced the "ustring" type for kprobe events. As far as I can see, Thomas's patch is sane. Thomas, could you show us your result on your test environment? Comments from Thomas Richter: Test results for s/390 included above. Signed-off-by: Thomas Richter Acked-by: Masami Hiramatsu Tested-by: Arnaldo Carvalho de Melo Cc: Heiko Carstens Cc: Sumanth Korikkar Cc: Vasily Gorbik Link: http://lore.kernel.org/lkml/20200217102111.61137-1-tmricht@linux.ibm.com Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf test: Free formats for perf pmu parse test

2020-09-23T10:40:41+00:00

[ Upstream commit d26383dcb2b4b8629fde05270b4e3633be9e3d4b ] The following leaks were detected by ASAN: Indirect leak of 360 byte(s) in 9 object(s) allocated from: #0 0x7fecc305180e in calloc (/lib/x86_64-linux-gnu/libasan.so.5+0x10780e) #1 0x560578f6dce5 in perf_pmu__new_format util/pmu.c:1333 #2 0x560578f752fc in perf_pmu_parse util/pmu.y:59 #3 0x560578f6a8b7 in perf_pmu__format_parse util/pmu.c:73 #4 0x560578e07045 in test__pmu tests/pmu.c:155 #5 0x560578de109b in run_test tests/builtin-test.c:410 #6 0x560578de109b in test_and_print tests/builtin-test.c:440 #7 0x560578de401a in __cmd_test tests/builtin-test.c:661 #8 0x560578de401a in cmd_test tests/builtin-test.c:807 #9 0x560578e49354 in run_builtin /home/namhyung/project/linux/tools/perf/perf.c:312 #10 0x560578ce71a8 in handle_internal_command /home/namhyung/project/linux/tools/perf/perf.c:364 #11 0x560578ce71a8 in run_argv /home/namhyung/project/linux/tools/perf/perf.c:408 #12 0x560578ce71a8 in main /home/namhyung/project/linux/tools/perf/perf.c:538 #13 0x7fecc2b7acc9 in __libc_start_main ../csu/libc-start.c:308 Fixes: cff7f956ec4a1 ("perf tests: Move pmu tests into separate object") Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: Ian Rogers Cc: Mark Rutland Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lore.kernel.org/lkml/20200915031819.386559-12-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf test: Fix the "signal" test inline assembly

2020-09-23T10:40:40+00:00

[ Upstream commit 8a39e8c4d9baf65d88f66d49ac684df381e30055 ] When compiling with DEBUG=1 on Fedora 32 I'm getting crash for 'perf test signal': Program received signal SIGSEGV, Segmentation fault. 0x0000000000c68548 in __test_function () (gdb) bt #0 0x0000000000c68548 in __test_function () #1 0x00000000004d62e9 in test_function () at tests/bp_signal.c:61 #2 0x00000000004d689a in test__bp_signal (test=0xa8e280 DW_AT_producer : (indirect string, offset: 0x254a): GNU C99 10.2.1 20200723 (Red Hat 10.2.1-1) -mtune=generic -march=x86-64 -ggdb3 -std=gnu99 -fno-omit-frame-pointer -funwind-tables -fstack-protector-all ^^^^^ ^^^^^ ^^^^^ $ Before: $ perf test signal 20: Breakpoint overflow signal handler : FAILED! $ After: $ perf test signal 20: Breakpoint overflow signal handler : Ok $ Fixes: 8fd34e1cce18 ("perf test: Improve bp_signal") Signed-off-by: Jiri Olsa Tested-by: Arnaldo Carvalho de Melo Cc: Alexander Shishkin Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Wang Nan Link: http://lore.kernel.org/lkml/20200911130005.1842138-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin