microsoft
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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/tools/perf
История
Arnaldo Carvalho de Melo bf4161eb7e perf bpf: Defer freeing string after possible strlen() on it 
commit 31ded1535e upstream.

This was detected by the gcc in Fedora Rawhide's gcc:

  50    11.01 fedora:rawhide                : FAIL gcc version 12.0.1 20220205 (Red Hat 12.0.1-0) (GCC)
        inlined from 'bpf__config_obj' at util/bpf-loader.c:1242:9:
    util/bpf-loader.c:1225:34: error: pointer 'map_opt' may be used after 'free' [-Werror=use-after-free]
     1225 |                 *key_scan_pos += strlen(map_opt);
          |                                  ^~~~~~~~~~~~~~~
    util/bpf-loader.c:1223:9: note: call to 'free' here
     1223 |         free(map_name);
          |         ^~~~~~~~~~~~~~
    cc1: all warnings being treated as errors

So do the calculations on the pointer before freeing it.

Fixes: 04f9bf2bac ("perf bpf-loader: Add missing '*' for key_scan_pos")
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang ShaoBo <bobo.shaobowang@huawei.com>
Link: https://lore.kernel.org/lkml/Yg1VtQxKrPpS3uNA@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2022-02-23 12:03:13 +01:00
..
Documentation perf doc: Fix typos all over the place 2021-09-27 09:32:28 -03:00
arch perf callchain: Fix compilation on powerpc with gcc11+ 2021-10-31 12:51:41 -03:00
bench perf bench futex: Fix memory leak of perf_cpu_map__new() 2021-11-25 09:48:33 +01:00
dlfilters perf tests: Add dlfilter test 2021-08-11 09:35:44 -03:00
examples/bpf perf tools: Fix various typos in comments 2021-03-23 17:13:43 -03:00
include perf build: Move perf_dlfilters.h in the source tree 2021-08-11 09:35:24 -03:00
jvmti perf tools: Fix various typos in comments 2021-03-23 17:13:43 -03:00
pmu-events perf jevents: Free the sys_event_tables list after processing entries 2021-10-05 14:48:10 -03:00
python tweewide: Fix most Shebang lines 2020-12-08 23:30:04 +09:00
scripts perf scripts python: intel-pt-events.py: Fix printing of switch events 2022-01-05 12:42:40 +01:00
tests perf tests: Remove bash construct from record+zstd_comp_decomp.sh 2021-11-25 09:48:33 +01:00
trace perf beauty: Cover more flags in the move_mount syscall argument beautifier 2021-09-10 18:15:22 -03:00
ui perf annotate: Avoid TUI crash when navigating in the annotation of recursive functions 2022-01-20 09:13:15 +01:00
util perf bpf: Defer freeing string after possible strlen() on it 2022-02-23 12:03:13 +01:00
.gitignore perf tools: Ignore Documentation dependency file 2021-09-11 15:36:16 -03:00
Build perf daemon: Add daemon command 2021-02-09 15:42:57 -03:00
CREDITS
…
MANIFEST scripts/bpf: Abstract eBPF API target parameter 2021-03-04 18:39:45 -08:00
Makefile perf tools: Add a build-test variant to use in builds from a tarball 2021-04-20 08:43:58 -03:00
Makefile.config perf tools: Drop requirement for libstdc++.so for libopencsd check 2022-01-27 11:05:38 +01:00
Makefile.perf perf build: Suppress 'rm dlfilter' build message 2021-10-31 12:51:41 -03:00
builtin-annotate.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-bench.c perf bench: Add benchmark for evlist open/close operations 2021-08-10 11:32:37 -03:00
builtin-buildid-cache.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-buildid-list.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-c2c.c Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
builtin-config.c
…
builtin-daemon.c Merge remote-tracking branch 'torvalds/master' into perf/core 2021-03-29 10:39:10 -03:00
builtin-data.c perf data: Correct -h output 2021-08-31 15:12:00 -03:00
builtin-diff.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-evlist.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-ftrace.c perf ftrace: Fix access to pid in array when setting a pid filter 2021-04-23 15:58:10 -03:00
builtin-help.c
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builtin-inject.c perf inject: Fix segfault due to perf_data__fd() without open 2021-12-22 09:32:48 +01:00
builtin-kallsyms.c
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builtin-kmem.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-kvm.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -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 tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-mem.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-probe.c perf probe: Do not show @plt function by default 2021-07-07 10:28:10 -03:00
builtin-record.c Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
builtin-report.c perf report: Fix memory leaks around perf_tip() 2021-12-08 09:04:41 +01:00
builtin-sched.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-script.c perf script: Fix CPU filtering of a script's switch events 2022-01-05 12:42:39 +01:00
builtin-stat.c perf iostat: Use system-wide mode if the target cpu_list is unspecified 2021-09-27 09:39:30 -03:00
builtin-timechart.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-top.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-trace.c perf tools: Remove repipe argument from perf_session__new() 2021-08-02 10:06:51 -03:00
builtin-version.c perf version: Add a feature for libpfm4 2020-11-04 09:42:40 -03:00
builtin.h perf daemon: Add daemon command 2021-02-09 15:42:57 -03:00
check-headers.sh perf report: Add tools/arch/x86/include/asm/amd-ibs.h 2021-09-10 18:13:20 -03:00
command-list.txt perf stat: Enable iostat mode for x86 platforms 2021-04-20 08:40:20 -03:00
design.txt perf tools: Support CAP_PERFMON capability 2020-04-16 12:19:08 -03:00
perf-archive.sh perf archive: Fix filtering of empty build-ids 2021-03-06 16:54:31 -03:00
perf-completion.sh
…
perf-iostat.sh perf stat: Enable iostat mode for x86 platforms 2021-04-20 08:40:20 -03:00
perf-read-vdso.c
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perf-sys.h perf tests: Call test_attr__open() directly 2020-09-10 11:55:37 -03:00
perf-with-kcore.sh
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perf.c perf debug: Move debug initialization earlier 2021-05-27 13:24:22 -03:00
perf.h
…