Vince Weaver 7622236ceb perf header: Fix divide by zero error if f_header.attr_size==0 ...

So I have been having lots of trouble with hand-crafted perf.data files
causing segfaults and the like, so I have started fuzzing the perf tool.

First issue found:

If f_header.attr_size is 0 in the perf.data file, then perf will crash
with a divide-by-zero error.

Committer note:

Added a pr_err() to tell the user why the command failed.

Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/alpine.DEB.2.21.1907231100440.14532@macbook-air
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2019-07-29 09:03:43 -03:00

..

arch

tools include UAPI: Sync x86's syscalls_64.tbl and generic unistd.h to pick up clone3 and pidfd_open

2019-07-26 12:31:28 -03:00

bench

perf tools: Use zfree() where applicable

2019-07-09 10:13:27 -03:00

Documentation

perf/urgent fixes:

2019-07-23 23:41:33 +02:00

examples/bpf

perf augmented_raw_syscalls: Move reading filename to the loop

2019-06-05 09:48:55 -03:00

include/bpf

perf bpf: Automatically add BTF ELF markers

2019-03-06 09:45:37 -03:00

jvmti

tools build: Check if gettid() is available before providing helper

2019-07-07 17:53:09 -03:00

pmu-events

perf vendor events s390: Add JSON files for machine type 8561

2019-07-12 13:51:59 -03:00

python

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 407

2019-06-05 17:37:14 +02:00

scripts

perf scripts python: export-to-postgresql.py: Export switch events

2019-07-10 13:05:12 -03:00

tests

perf test: Auto bump rlimit(MEMLOCK) for BPF test sake

2019-07-09 16:27:01 -03:00

trace

tools perf beauty: Fix usbdevfs_ioctl table generator to handle _IOC()

2019-07-29 09:03:42 -03:00

ui

perf hists browser: Fix potential NULL pointer dereference found by the smatch tool

2019-07-09 10:13:27 -03:00

util

perf header: Fix divide by zero error if f_header.attr_size==0

2019-07-29 09:03:43 -03:00

.gitignore

perf tools: Add trace/beauty/generated/ into .gitignore

2018-02-05 13:58:02 -03:00

Build

perf tools: Rename build libperf to perf

2019-02-14 15:18:08 -03:00

builtin-annotate.c

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00

builtin-bench.c

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00

builtin-buildid-cache.c

perf data: Add global path holder

2019-02-22 16:52:07 -03:00

builtin-buildid-list.c

perf data: Add global path holder

2019-02-22 16:52:07 -03:00

builtin-c2c.c

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00

builtin-config.c

perf tools: Add missing headers, mostly stdlib.h

2019-07-09 10:13:22 -03:00

builtin-data.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

builtin-diff.c

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00

builtin-evlist.c

perf data: Add global path holder

2019-02-22 16:52:07 -03:00

builtin-ftrace.c

perf tools: Use list_del_init() more thorougly

2019-07-09 10:13:27 -03:00

builtin-help.c

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00

builtin-inject.c

perf inject: The tool->read() call may pass a NULL evsel, handle it

2019-07-09 09:33:55 -03:00

builtin-kallsyms.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 251

2019-06-05 17:30:26 +02:00

builtin-kmem.c

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00

builtin-kvm.c

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00

builtin-list.c

perf list: Output tool events

2019-04-01 14:49:25 -03:00

builtin-lock.c

perf tools: Use list_del_init() more thorougly

2019-07-09 10:13:27 -03:00

builtin-mem.c

perf data: Add global path holder

2019-02-22 16:52:07 -03:00

builtin-probe.c

perf probe: Avoid calling freeing routine multiple times for same pointer

2019-07-23 09:04:41 -03:00

builtin-record.c

perf tools: Use zfree() where applicable

2019-07-09 10:13:27 -03:00

builtin-report.c

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00

builtin-sched.c

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00

builtin-script.c

perf script: Fix off by one in brstackinsn IPC computation

2019-07-23 08:59:37 -03:00

builtin-stat.c

perf stat: Fix segfault for event group in repeat mode

2019-07-23 09:00:05 -03:00

builtin-timechart.c

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00

builtin-top.c

perf top: Fix potential NULL pointer dereference detected by the smatch tool

2019-07-09 09:33:54 -03:00

builtin-trace.c

perf trace: Auto bump rlimit(MEMLOCK) for eBPF maps sake

2019-07-09 16:36:45 -03:00

builtin-version.c

perf version: Fix segfault due to missing OPT_END()

2019-07-15 07:59:05 -03:00

builtin.h

perf script: Add array bound checking to list_scripts

2019-03-11 16:33:19 -03:00

check-headers.sh

tools perf: Move from sane_ctype.h obtained from git to the Linux's original

2019-06-25 21:02:47 -03:00

command-list.txt

perf help: Add missing subcommand version

2018-09-19 14:53:36 -03:00

CREDITS

…

design.txt

perf/doc: Update design.txt for exclude_{host|guest} flags

2019-01-21 11:01:18 +01:00

Makefile

perf tools: Disable parallelism for 'make clean'

2018-08-20 08:54:58 -03:00

Makefile.config

tools build: Check if gettid() is available before providing helper

2019-07-07 17:53:09 -03:00

Makefile.perf

Linux 5.2-rc3

2019-06-03 11:56:35 +02:00

MANIFEST

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00

perf-archive.sh

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

perf-completion.sh

perf tools: Auto-complete for events with ':'

2017-12-27 12:16:00 -03:00

perf-read-vdso.c

perf tools: Make find_vdso_map() more modular

2019-01-08 13:28:13 -03:00

perf-sys.h

Drop a bunch of metag references

2018-02-23 14:29:59 +00:00

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

tools lib: Adopt zalloc()/zfree() from tools/perf

2019-07-09 10:13:26 -03:00

perf.h

perf tools: Increase MAX_NR_CPUS and MAX_CACHES

2019-06-25 08:47:10 -03:00