Krister Johansen 11a4d644d6 perf callchain: Reference count maps ...

commit aa33b9b9a2 upstream.

If dso__load_kcore frees all of the existing maps, but one has already
been attached to a callchain cursor node, then we can get a SIGSEGV in
any function that happens to try to use this invalid cursor.  Use the
existing map refcount mechanism to forestall cleanup of a map until the
cursor iterates past the node.

Signed-off-by: Krister Johansen <kjlx@templeofstupid.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Fixes: 84c2cafa28 ("perf tools: Reference count struct map")
Link: http://lkml.kernel.org/r/20170106062331.GB2707@templeofstupid.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-03-12 06:41:47 +01:00

..

accounting

tools: move accounting tool from Documentation

2016-09-23 13:07:15 -06:00

arch

x86/cpufeature: Add AVX512_4VNNIW and AVX512_4FMAPS features

2016-10-19 17:37:13 +02:00

build

tools build: Add feature detection for g++

2016-10-05 19:59:35 -03:00

cgroup

cgroups: fix cgroup_event_listener error handling

2013-01-08 10:00:44 -08:00

firewire

tools/firewire: nosy-dump: check for allocation failure

2012-12-02 20:10:18 +01:00

gpio

tools/gpio: fix gpio-event-mon header comment

2016-08-08 09:50:22 +02:00

hv

Drivers: hv: utils: Check VSS daemon is listening before a hot backup

2016-09-02 17:22:51 +02:00

iio

Merge tag 'iio-for-4.9b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

2016-09-14 20:42:03 +02:00

include

tools: Synchronize tools/include/uapi/linux/bpf.h

2016-10-05 19:31:48 -03:00

kvm/kvm_stat

tools: kvm_stat: Add comments

2016-05-25 16:12:06 +02:00

laptop

tools: move laptops dslm tool from Documentation

2016-09-23 13:07:21 -06:00

lguest

tools/lguest: Don't bork the terminal in case of wrong args

2016-09-08 08:05:24 +02:00

lib

tools lib traceevent: Fix kbuffer_read_at_offset()

2016-10-05 11:36:22 -03:00

net

tools: bpf_jit_disasm: check for klogctl failure

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

nfsd

NFSD: Added fault injection script

2011-11-07 21:10:47 -05:00

objtool

objtool: Fix bytes check of lea's rex_prefix

2016-12-06 09:20:59 +01:00

pcmcia

tools: move pcmcia crc32hash tool from Documentation

2016-09-23 13:07:27 -06:00

perf

perf callchain: Reference count maps

2017-03-12 06:41:47 +01:00

power

tools/power/acpi: Remove direct kernel source include reference

2016-11-16 22:31:26 +01:00

scripts

tools build: Fix objtool build with ARCH=x86_64

2016-07-22 16:37:44 -03:00

spi

Merge remote-tracking branches 'spi/topic/ti-qspi', 'spi/topic/tools', 'spi/topic/txx9' and 'spi/topic/xlp' into spi-next

2016-09-30 09:14:22 -07:00

testing

selftest/powerpc: Wrong PMC initialized in pmc56_overflow test

2017-01-26 08:24:45 +01:00

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

usbip: adding names db to port operation

2016-05-03 14:32:07 -07:00

virtio

tools/virtio/ringtest: fix run-on-all.sh for offline cpus

2017-01-26 08:24:46 +01:00

vm

tools/vm/page_owner: increase temporary buffer size

2016-07-26 16:19:19 -07:00

Makefile

tools/gpio: add install section

2016-06-23 11:07:13 +02:00