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linux-6.1.y
linux-stable/tools/perf
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Benjamin Peterson 57ef7705a3 perf trace: Avoid garbage when not printing a syscall's arguments 
[ Upstream commit 1302e352b2 ]

syscall__scnprintf_args may not place anything in the output buffer
(e.g., because the arguments are all zero). If that happened in
trace__fprintf_sys_enter, its fprintf would receive an unitialized
buffer leading to garbage output.

Fix the problem by passing the (possibly zero) bounds of the argument
buffer to the output fprintf.

Fixes: a98392bb1e ("perf trace: Use beautifiers on syscalls:sys_enter_ handlers")
Signed-off-by: Benjamin Peterson <benjamin@engflow.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Howard Chu <howardchu95@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20241107232128.108981-2-benjamin@engflow.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-12-14 19:53:46 +01:00
..
arch perf intel-pt: Fix exclude_guest setting 2024-08-03 08:49:15 +02:00
bench perf bench internals inject-build-id: Fix trap divide when collecting just one DSO 2024-06-12 11:03:40 +02:00
dlfilters perf dlfilter dlfilter-show-cycles: Fix types for print format 2022-09-08 12:17:45 -03:00
Documentation perf: script: add raw|disasm arguments to --insn-trace option 2024-06-27 13:46:23 +02:00
examples/bpf perf tools: Fix various typos in comments 2021-03-23 17:13:43 -03:00
include perf dlfilter: Add machine_pid and vcpu 2022-07-20 11:08:13 -03:00
jvmti perf tools: Fix various typos in comments 2021-03-23 17:13:43 -03:00
pmu-events perf vendor events: Drop STORES_PER_INST metric event for power10 platform 2023-09-19 12:28:00 +02:00
python perf python: Convert tracepoint.py example to python3 2022-04-01 16:19:35 -03:00
scripts perf scripts intel-pt-events.py: Fix IPC output for Python 2 2023-05-17 11:53:39 +02:00
tests perf test: Make test_arm_callgraph_fp.sh more robust 2024-08-03 08:49:14 +02:00
trace tools headers uapi: Sync linux/stat.h with the kernel sources 2022-10-25 17:40:48 -03:00
ui perf ui browser: Avoid SEGV on title 2024-06-12 11:03:41 +02:00
util perf probe: Correct demangled symbols in C++ program 2024-12-14 19:53:44 +01:00
.gitignore perf tools: Add the include/perf/ directory to .gitignore 2022-11-08 18:54:41 -03:00
Build perf kwork: New tool to trace time properties of kernel work (such as softirq, and workqueue) 2022-07-26 16:01:24 -03:00
builtin-annotate.c perf annotate: Get rid of duplicate --group option item 2024-06-12 11:03:34 +02:00
builtin-bench.c perf bench: Add missing setlocale() call to allow usage of %'d style formatting 2023-07-19 16:21:36 +02:00
builtin-buildid-cache.c perf record: Disable debuginfod by default 2022-01-15 17:41:25 -03:00
builtin-buildid-list.c perf buildid-list: Add a "-m" option to show kernel and modules build-ids 2022-07-18 16:35:34 -03:00
builtin-c2c.c perf mem/c2c: Set PERF_SAMPLE_WEIGHT for LOAD_STORE events 2022-10-06 16:29:32 -03:00
builtin-config.c
builtin-daemon.c perf daemon: Fix file leak in daemon_session__control 2024-06-12 11:03:42 +02:00
builtin-data.c perf data: Don't mention --to-ctf if it's not supported 2022-02-22 21:23:08 -03:00
builtin-diff.c perf tools: Make quiet mode consistent between tools 2022-12-31 13:33:07 +01:00
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 latency: Fix unit on histogram first entry when using --use-nsec 2024-12-14 19:53:44 +01:00
builtin-help.c
builtin-inject.c perf inject: Fix leader sampling inserting additional samples 2024-10-17 15:21:01 +02:00
builtin-kallsyms.c
builtin-kmem.c libsubcmd: Don't free the usage string 2024-10-17 15:22:11 +02:00
builtin-kvm.c libsubcmd: Don't free the usage string 2024-10-17 15:22:11 +02:00
builtin-kwork.c libsubcmd: Don't free the usage string 2024-10-17 15:22:11 +02:00
builtin-list.c perf list: Fix metricgroups title message 2022-10-14 12:21:42 -03:00
builtin-lock.c perf lock: Don't pass an ERR_PTR() directly to perf_session__delete() 2024-10-17 15:22:28 +02:00
builtin-mem.c libsubcmd: Don't free the usage string 2024-10-17 15:22:11 +02:00
builtin-probe.c perf probe: Check -v and -q options in the right place 2022-12-31 13:33:08 +01:00
builtin-record.c perf record: Delete session after stopping sideband thread 2024-06-12 11:03:33 +02:00
builtin-report.c perf report: Avoid SEGV in report__setup_sample_type() 2024-06-12 11:03:41 +02:00
builtin-sched.c libsubcmd: Don't free the usage string 2024-10-17 15:22:11 +02:00
builtin-script.c perf script: Show also errors for --insn-trace option 2024-06-27 13:46:23 +02:00
builtin-stat.c perf stat: Fix affinity memory leaks on error path 2024-12-14 19:53:43 +01:00
builtin-timechart.c perf timechart: Add p_state_end helper 2022-10-04 08:55:21 -03:00
builtin-top.c perf top: Don't pass an ERR_PTR() directly to perf_session__delete() 2023-09-19 12:28:00 +02:00
builtin-trace.c perf trace: Avoid garbage when not printing a syscall's arguments 2024-12-14 19:53:46 +01:00
builtin-version.c perf version: Add HAVE_DEBUGINFOD_SUPPORT to built-in features 2022-04-20 13:32:09 -03:00
builtin.h perf kwork: New tool to trace time properties of kernel work (such as softirq, and workqueue) 2022-07-26 16:01:24 -03:00
check-headers.sh tools headers: Update the copy of x86's memcpy_64.S used in 'perf bench' 2022-10-25 17:40:48 -03:00
command-list.txt perf kwork: New tool to trace time properties of kernel work (such as softirq, and workqueue) 2022-07-26 16:01:24 -03:00
CREDITS
design.txt perf design.txt: Synchronize the definition of enum perf_hw_id with code 2021-11-13 18:11:50 -03:00
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 build: Fix library not found error when using CSLIBS 2023-07-27 08:50:39 +02:00
Makefile.perf perf test: Add arm64 asm pureloop test shell script 2022-10-06 14:50:49 -03:00
MANIFEST perf MANIFEST: Add bpftool files to allow building with BUILD_BPF_SKEL=1 2021-11-07 15:39:28 -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 tools: Fix auto-complete on aarch64 2023-03-10 09:33:27 +01:00
perf-iostat.sh perf stat: Enable iostat mode for x86 platforms 2021-04-20 08:40:20 -03:00
perf-read-vdso.c
perf-sys.h
perf.c perf tools: Add same_cmd_with_prefix() helper 2022-10-04 08:55:21 -03:00
perf.h