Wang Nan 2d11c65071 perf record: Prevent reading invalid data in record__mmap_read ...

When record__mmap_read() requires data more than the size of ring
buffer, drop those data to avoid accessing invalid memory.

This can happen when reading from overwritable ring buffer, which
should be avoided. However, check this for robustness.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1463987628-163563-3-git-send-email-wangnan0@huawei.com
Signed-off-by: He Kuang <hekuang@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

2016-05-23 18:22:46 -03:00

..

arch

tools include: Add basic atomic.h implementation from the kernel sources

2015-05-08 16:11:05 -03:00

build

perf probe: Check if dwarf_getlocations() is available

2016-05-12 11:26:59 -03:00

cgroup

…

firewire

…

gpio

gpio: present the consumer of a line to userspace

2016-02-25 21:07:23 +01:00

hv

tools/hv: Use include/uapi with __EXPORTED_HEADERS__

2016-02-07 21:34:12 -08:00

iio

iio: generic_buffer: be helpful about enabling channels

2015-08-16 10:51:26 +01:00

include

Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-03-24 10:02:14 -07:00

laptop/freefall

Move freefall program from Documentation/ to tools/

2015-06-08 16:42:07 -06:00

lguest

tools/lguest: Force disable tboot and APM

2016-04-22 10:29:03 +02:00

lib

Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-05-16 14:08:43 -07:00

net

tools: bpf_jit_disasm: check for klogctl failure

2016-05-08 23:32:59 -04:00

nfsd

…

objtool

objtool: Detect falling through to the next function

2016-04-16 11:14:17 +02:00

perf

perf record: Prevent reading invalid data in record__mmap_read

2016-05-23 18:22:46 -03:00

power

Merge branches 'pm-core', 'powercap' and 'pm-tools'

2016-04-08 21:46:56 +02:00

scripts

tools: Move utilities.mak from perf to tools/scripts/

2016-03-18 13:57:20 -03:00

spi

spi: spidev_test: Fix typo in error message

2015-12-08 17:58:56 +00:00

testing

Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-05-16 15:15:17 -07:00

thermal/tmon

tools/thermal: tmon: use pkg-config also for CFLAGS

2015-10-10 11:32:31 +08:00

time

tools: add script to test udelay

2014-07-23 10:16:38 -07:00

usb

usb: patches for v4.4 merge window

2015-10-22 17:19:33 -07:00

virtio

virtio_ring: Support DMA APIs

2016-03-02 17:01:57 +02:00

vm

tools/vm/page-types.c: avoid memset() in walk_pfn() when count == 1

2016-03-17 15:09:34 -07:00

Makefile

tools build: Fix perf_clean target

2016-04-25 17:59:36 -03:00