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Leo Yan 681e7a933f perf session: Fix handling when buffer exceeds 2 GiB 
[ Upstream commit c17dda8013 ]

If a user specifies an AUX buffer larger than 2 GiB, the returned size
may exceed 0x80000000. Since the err variable is defined as a signed
32-bit integer, such a value overflows and becomes negative.

As a result, the perf record command reports an error:

  0x146e8 [0x30]: failed to process type: 71 [Unknown error 183711232]

Change the type of the err variable to a signed 64-bit integer to
accommodate large buffer sizes correctly.

Fixes: d5652d865e ("perf session: Add ability to skip 4GiB or more")
Reported-by: Tamas Zsoldos <tamas.zsoldos@arm.com>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20250808-perf_fix_big_buffer_size-v1-1-45f45444a9a4@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-10-29 13:59:50 +01:00
..
arch
perf tools: Fix record failure when mixed with ARM SPE event
2020-08-05 09:59:49 +02:00
bench
perf bench: Fix undefined behavior in cmpworker()
2025-03-13 12:43:08 +01:00
Documentation
perf record/stat: Explicitly call out event modifiers in the documentation
2020-09-05 11:22:49 +02:00
examples/bpf
perf augmented_raw_syscalls: Reduce perf_event_output() boilerplate
2019-08-26 11:58:29 -03:00
include/bpf
perf include bpf: Add bpf_tail_call() prototype
2019-07-29 18:34:40 -03:00
jvmti
perf jvmti: Link against tools/lib/ctype.h to have weak strlcpy()
2019-10-15 11:47:38 -03:00
lib
libperf: Add perf_evlist__poll() function
2019-09-25 09:51:49 -03:00
pmu-events
perf jevents: Make build dependency on test JSONs
2023-09-23 11:00:05 +02:00
python
tweewide: Fix most Shebang lines
2021-05-22 11:38:30 +02:00
scripts
perf scripts python: exported-sql-viewer.py: Fix pattern matching with Python 3
2025-06-27 11:02:48 +01:00
tests
perf tests bp_account: Fix leaked file descriptor
2025-08-28 16:21:20 +02:00
trace
perf trace: Add the syscall_arg_fmt pointer to syscall_arg
2023-01-18 11:41:28 +01:00
ui
perf ui browser hists: Set actions->thread before calling do_zoom_thread()
2025-06-27 11:02:48 +01:00
util
perf session: Fix handling when buffer exceeds 2 GiB
2025-10-29 13:59:50 +01:00
.gitignore
perf: Update .gitignore file
2019-08-31 22:27:52 -03:00
Build
…
builtin-annotate.c
perf session: Return error code for perf_session__new() function on failure
2019-09-20 15:58:11 -03:00
builtin-bench.c
perf tools: Remove perf.h from source files not needing it
2019-08-29 17:38:32 -03:00
builtin-buildid-cache.c
perf session: Return error code for perf_session__new() function on failure
2019-09-20 15:58:11 -03:00
builtin-buildid-list.c
perf session: Return error code for perf_session__new() function on failure
2019-09-20 15:58:11 -03:00
builtin-c2c.c
perf c2c: Fix sorting in percent_rmt_hitm_cmp()
2022-06-14 18:11:56 +02:00
builtin-config.c
perf tools: Remove util.h from where it is not needed
2019-09-20 09:19:20 -03:00
builtin-data.c
perf debug: Remove needless include directives from debug.h
2019-08-31 19:10:19 -03:00
builtin-diff.c
perf diff: Use llabs() with 64-bit values
2020-01-04 19:18:26 +01:00
builtin-evlist.c
perf evsel: Introduce evsel_fprintf.h
2019-09-25 16:26:34 -03:00
builtin-ftrace.c
perf ftrace: Fix access to pid in array when setting a pid filter
2021-05-07 10:51:37 +02:00
builtin-help.c
perf debug: Remove needless include directives from debug.h
2019-08-31 19:10:19 -03:00
builtin-inject.c
perf inject: Close inject.output on exit
2021-07-28 13:31:02 +02:00
builtin-kallsyms.c
perf dsos: Move the dsos struct and its methods to separate source files
2019-08-31 22:24:10 -03:00
builtin-kmem.c
perf kmem: Fix memory leak in compact_gfp_flags()
2019-10-16 10:08:32 -03:00
builtin-kvm.c
perf tools: Propagate get_cpuid() error
2019-09-30 17:29:54 -03:00
builtin-list.c
perf list: Allow plurals for metric, metricgroup
2019-09-25 09:51:42 -03:00
builtin-lock.c
perf lock: Don't free "lock_seq_stat" if read_count isn't zero
2020-11-24 13:29:05 +01:00
builtin-mem.c
perf session: Return error code for perf_session__new() function on failure
2019-09-20 15:58:11 -03:00
builtin-probe.c
perf probe: Do not show the skipped events
2020-06-22 09:31:27 +02:00
builtin-record.c
perf record: Fix incorrect --user-regs comments
2025-06-27 11:02:48 +01:00
builtin-report.c
perf report: Fix misleading help message about --demangle
2025-03-13 12:42:56 +01:00
builtin-sched.c
perf sched timehist: Fixed timestamp error when unable to confirm event sched_in time
2024-11-08 16:20:31 +01:00
builtin-script.c
perf script: Fix CPU filtering of a script's switch events
2022-01-05 12:37:46 +01:00
builtin-stat.c
perf stat: Skip duration_time in setup_system_wide
2020-10-29 09:57:50 +01:00
builtin-timechart.c
perf session: Return error code for perf_session__new() function on failure
2019-09-20 15:58:11 -03:00
builtin-top.c
perf top: Don't complain about lack of vmlinux when not resolving some kernel samples
2025-03-13 12:42:56 +01:00
builtin-trace.c
perf trace: Fix runtime error of index out of bounds
2025-03-13 12:43:00 +01:00
builtin-version.c
perf symbols: Move mem_info and branch_info out of symbol.h
2019-08-31 22:27:48 -03:00
builtin.h
perf tools: Remove needless util.h include from builtin.h
2019-08-28 17:19:34 -03:00
check-headers.sh
x86: xen: insn: Decode Xen and KVM emulate-prefix signature
2022-05-15 19:54:47 +02:00
command-list.txt
…
CREDITS
…
design.txt
…
Makefile
tools: Let O= makes handle a relative path with -C option
2020-04-01 11:02:00 +02:00
Makefile.config
perf tools: Add an option to build without libbfd
2023-09-23 11:00:05 +02:00
Makefile.perf
tools: Factor HOSTCC, HOSTLD, HOSTAR definitions
2021-01-30 13:54:10 +01:00
MANIFEST
tools lib: Adopt zalloc()/zfree() from tools/perf
2019-07-09 10:13:26 -03:00
perf-archive.sh
…
perf-completion.sh
perf tools: Fix auto-complete on aarch64
2023-03-11 16:43:49 +01:00
perf-read-vdso.c
…
perf-sys.h
perf tools: Make usage of test_attr__* optional for perf-sys.h
2019-10-31 21:38:41 +01:00
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
perf tools: Fix perf's libperf_print callback
2022-04-15 14:18:38 +02:00
perf.h
perf time-utils: Adopt rdclock() from perf.h
2019-08-29 17:38:32 -03:00