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linux/tools/perf
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Krister Johansen aa33b9b9a2 perf callchain: Reference count maps 
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>
Cc: stable@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>
2017-02-02 11:39:09 -03:00
..
arch perf annotate: AArch64 support 2016-12-01 13:03:19 -03:00
bench perf bench futex: Fix lock-pi help string 2016-12-20 09:37:40 -03:00
Documentation perf record: Fix --switch-output documentation and comment 2017-01-03 11:11:38 -03:00
jvmti perf kvmti: Remove unused Makefile file 2016-11-14 12:42:56 -03:00
pmu-events perf vendor events: Support couple more POWER8 PVRs in mapfile 2016-10-17 13:39:47 -03:00
python perf python: Add tracepoint example 2016-07-12 16:23:35 -03:00
scripts perf/core improvements and fixes: 2016-08-04 11:02:38 +02:00
tests Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-12-23 16:49:12 -08:00
trace perf trace: Check if MAP_32BIT is defined (again) 2016-12-20 09:37:40 -03:00
ui perf diff: Fix -o/--order option behavior (again) 2017-02-02 11:39:09 -03:00
util perf callchain: Reference count maps 2017-02-02 11:39:09 -03:00
.gitignore perf tools: Add arch/*/include/generated/ to .gitignore 2016-05-30 12:41:46 -03:00
Build perf c2c: Add c2c command 2016-10-19 13:18:31 -03:00
builtin-annotate.c perf annotate: Add branch stack / basic block 2016-09-08 13:44:03 -03:00
builtin-bench.c
builtin-buildid-cache.c tools: Introduce str_error_r() 2016-07-12 15:19:47 -03:00
builtin-buildid-list.c
builtin-c2c.c perf tools: Remove some needless __maybe_unused 2016-12-15 16:25:45 -03:00
builtin-config.c perf config: Mark where are config items from (user or system) 2016-11-14 13:10:37 -03:00
builtin-data.c perf data ctf: Add '--all' option for 'perf data convert' 2016-06-28 10:54:57 -03:00
builtin-diff.c perf diff: Fix -o/--order option behavior (again) 2017-02-02 11:39:09 -03:00
builtin-evlist.c perf evlist: Rename for_each() macros to for_each_entry() 2016-06-23 11:26:15 -03:00
builtin-help.c tools: Introduce str_error_r() 2016-07-12 15:19:47 -03:00
builtin-inject.c perf symbols: Remove symbol_filter_t machinery 2016-09-05 11:14:50 -03:00
builtin-kmem.c mm: get rid of __GFP_OTHER_NODE 2017-01-10 18:31:55 -08:00
builtin-kvm.c perf kvm: Use NSEC_PER_USEC 2016-08-23 15:37:33 -03:00
builtin-list.c perf list: Support long jevents descriptions 2016-10-03 21:35:47 -03:00
builtin-lock.c
builtin-mem.c perf mem: Fix --all-user/--all-kernel options 2016-12-15 16:25:45 -03:00
builtin-probe.c perf probe: Ignore vmlinux Build-id when offline vmlinux given 2016-09-01 12:42:22 -03:00
builtin-record.c perf record: Fix --switch-output documentation and comment 2017-01-03 11:11:38 -03:00
builtin-report.c perf tools: Remove some needless __maybe_unused 2016-12-15 16:25:45 -03:00
builtin-sched.c perf sched timehist: Show total scheduling time 2016-12-27 21:47:57 -03:00
builtin-script.c perf script: Add option to specify time window of interest 2016-12-01 13:02:45 -03:00
builtin-stat.c perf tools: Remove some needless __maybe_unused 2016-12-15 16:25:45 -03:00
builtin-timechart.c perf timechart: Use NSEC_PER_U?SEC 2016-08-23 15:37:33 -03:00
builtin-top.c perf annotate: Start supporting cross arch annotation 2016-11-17 17:12:50 -03:00
builtin-trace.c perf trace: Update tid/pid filtering option to leverage symbol_conf 2016-11-25 16:04:22 -03:00
builtin-version.c
builtin.h perf c2c: Add c2c command 2016-10-19 13:18:31 -03:00
check-headers.sh perf tools: Move headers check into bash script 2016-12-15 16:25:44 -03:00
command-list.txt
CREDITS
design.txt
Makefile
Makefile.config perf build: Check LLVM version in feature check 2016-12-06 13:21:55 -03:00
Makefile.perf perf/urgent fixes and one improvement: 2017-01-05 08:33:02 +01:00
MANIFEST tools lib: Add for_each_clear_bit macro 2016-10-24 11:07:33 -03:00
perf-archive.sh
perf-completion.sh
perf-read-vdso.c
perf-sys.h perf powerpc: Fix build-test failure 2016-09-08 13:44:07 -03:00
perf-with-kcore.sh
perf.c perf c2c: Add c2c command 2016-10-19 13:18:31 -03:00
perf.h perf evsel: Allow to ignore missing pid 2016-12-15 16:25:46 -03:00