linux/tools/perf
Nikunj A. Dadhania 7fb0a5ee88 perf kvm: Finding struct machine fails for PERF_RECORD_MMAP
Running 'perf kvm --host --guest --guestmount /tmp/guestmount record -a -g -- sleep 2'

Was resulting in a segfault. For event type PERF_RECORD_MMAP,
event->ip.pid is being used in perf_session__find_machine_for_cpumode,
which is not correct.

The event->ip.pid field happens to be 0 in this case and results in
returning a NULL machine object. Finally, access to self->pid in
machine__mmap_name, results in a segfault later.

For PERF_RECORD_MMAP type, pass event->mmap.pid.

Signed-off-by: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Tested-by: David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Nikunj A. Dadhania <nikunj@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20120409081835.10576.22018.stgit@abhimanyu.in.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-04-11 11:45:12 -03:00
..
arch perf tools: Use scnprintf where applicable 2012-03-14 12:36:19 -03:00
bench perf tool: Fix perf stack to non executable on x86_64 2012-02-06 19:14:17 -02:00
config perf report: Add a simple GTK2-based 'perf report' browser 2012-03-19 15:13:29 -03:00
Documentation perf report: Add a simple GTK2-based 'perf report' browser 2012-03-19 15:13:29 -03:00
python perf python: Use attr.watermark in twatch.py 2012-01-30 18:38:23 -02:00
scripts perf script: Add drop monitor script 2011-09-29 16:41:37 -03:00
util perf kvm: Finding struct machine fails for PERF_RECORD_MMAP 2012-04-11 11:45:12 -03:00
.gitignore perf tools: Makefile: Remove various and sundry cruft 2011-02-18 07:43:06 -02:00
builtin-annotate.c perf annotate: Get rid of field_sep check 2012-01-08 13:29:34 -02:00
builtin-bench.c perf bench: Also allow measuring memset() 2012-01-24 20:25:32 -02:00
builtin-buildid-cache.c perf buildid: add perfconfig option to specify buildid cache dir 2010-06-05 09:34:04 -03:00
builtin-buildid-list.c perf report: Accept fifos as input file 2011-12-23 17:01:03 -02:00
builtin-diff.c perf diff: Fix to work with new hists design 2012-03-22 15:12:09 -03:00
builtin-evlist.c perf report: Accept fifos as input file 2011-12-23 17:01:03 -02:00
builtin-help.c perf options: Type check all the remaining OPT_ variants 2010-05-17 16:22:41 -03:00
builtin-inject.c perf tools: Rename perf_event_ops to perf_tool 2011-11-28 10:39:28 -02:00
builtin-kmem.c perf kmem: Fix a memory leak 2012-01-08 13:27:54 -02:00
builtin-kvm.c perf kvm: Do guest-only counting by default 2012-01-06 15:47:37 -02:00
builtin-list.c perf list: Allow filtering list of events 2011-02-17 15:38:58 -02:00
builtin-lock.c perf lock: Document lock info subcommand 2012-01-30 18:30:48 -02:00
builtin-probe.c perf probe: Rename target_module to target 2012-02-02 17:39:15 -02:00
builtin-record.c perf record: Add HEADER_BRANCH_STACK tag 2012-03-09 08:26:08 +01:00
builtin-report.c perf report: Add a simple GTK2-based 'perf report' browser 2012-03-19 15:13:29 -03:00
builtin-sched.c perf tools: Fix getrusage() related build failure on glibc trunk 2012-04-04 11:59:00 +02:00
builtin-script.c perf script: Add option resolving vmlinux path 2012-01-30 18:13:07 -02:00
builtin-stat.c perf stat: Fix event grouping on forked task 2012-03-16 16:13:45 -03:00
builtin-test.c perf tools: Fix modifier to be applied on correct events 2012-03-22 15:11:38 -03:00
builtin-timechart.c perf report: Accept fifos as input file 2011-12-23 17:01:03 -02:00
builtin-top.c perf annotate: Validate addr in symbol__inc_addr_samples 2012-04-05 19:51:14 -03:00
builtin.h perf tools: Make perf.data more self-descriptive (v8) 2011-10-07 17:01:24 -03:00
command-list.txt perf evlist: New command to list the names of events present in a perf.data file 2011-03-15 11:10:48 -03:00
CREDITS perf_counter tools: Add CREDITS file for Git contributors 2009-06-24 19:54:29 +02:00
design.txt perf: Fix few typos + cosmetics 2010-01-13 17:39:44 +01:00
Makefile Merge branch 'perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent 2012-03-31 09:27:41 +02:00
MANIFEST perf tools: Fix out of tree compiles 2012-02-13 22:46:41 -02:00
perf-archive.sh perf buildid: add perfconfig option to specify buildid cache dir 2010-06-05 09:34:04 -03:00
perf.c perf tools: Simplify debugfs mountpoint handling code 2011-11-28 10:11:28 -02:00
perf.h Merge branch 'perf/urgent' into perf/core 2012-03-22 15:09:08 -03:00