WSL2-Linux-Kernel/tools
David Ahern 7ed97ad41f perf kvm: Fix segfault with report and mixed guestmount use
Using the guestmount option on record:
    $ perf kvm --guest --host --guestmount=/tmp/guest-mount record -ag

But not the subsequent report:
    $ perf kvm report

causes a SEGFAULT in the usual place:
(gdb) bt
0  0x0000000000470356 in machine__mmap_name (self=0x0, bf=0x7fffffffbdb0 " z\370\367\377\177", size=
    4096) at util/map.c:712
1  0x00000000004453e8 in perf_event__process_kernel_mmap (tool=0x7fffffffde10, event=0x7ffff7f87e38,
    machine=0x0) at util/event.c:550
2  0x00000000004458c9 in perf_event__process_mmap (tool=0x7fffffffde10, event=0x7ffff7f87e38, sample=
    0x7fffffffd2a0, machine=0x0) at util/event.c:656
3  0x00000000004733e0 in perf_session_deliver_event (session=0x91aca0, event=0x7ffff7f87e38, sample=
    0x7fffffffd2a0, tool=0x7fffffffde10, file_offset=7736) at util/session.c:979
...

The MMAP events in this case already contain the full path to the
module. No need to require it for the report path to.

Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1341241977-71535-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2012-07-02 14:03:50 -03:00
..
firewire
hv Tools: hv: verify origin of netlink connector message 2012-06-10 00:29:46 +09:00
include/tools tools/include: Add byteshift headers for endian access 2012-02-28 10:22:51 -08:00
lguest lguest: move the lguest tool to the tools directory 2012-01-12 15:44:47 +10:30
lib/traceevent tools lib traceevent: Silence compiler warning on 32bit build 2012-05-26 14:14:58 -03:00
nfsd NFSD: Added fault injection script 2011-11-07 21:10:47 -05:00
perf perf kvm: Fix segfault with report and mixed guestmount use 2012-07-02 14:03:50 -03:00
power tools/power turbostat: fix IVB support 2012-06-03 23:47:49 -04:00
scripts perf: Build libtraceevent.a 2012-04-25 13:01:40 +02:00
testing syscalls, x86: add __NR_kcmp syscall 2012-05-31 17:49:32 -07:00
usb USB: testusb: add path /dev/bus/usb to default search paths for usbfs 2012-05-15 08:41:13 -07:00
virtio virtio/tools: add delayed interupt mode 2012-05-02 18:22:14 +03:00
vm tools/vm/page-types.c: cleanups 2012-05-29 16:22:21 -07:00
Makefile tools: Connect to the kernel build system 2012-04-11 15:00:17 -03:00