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| author | Namhyung Kim <namhyung.kim@lge.com> | 2013-04-01 13:35:17 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-05-28 15:23:52 +0200 |
| commit | 26353a61b977e57b58dd3555bc0422fea46c5ad6 (patch) | |
| tree | c6fe9a8d16effc5284ff44c1be0879e7adb8ad41 /init | |
| parent | perf tools: Fix bug in isupper() and islower() (diff) | |
| download | linux-26353a61b977e57b58dd3555bc0422fea46c5ad6.tar.xz linux-26353a61b977e57b58dd3555bc0422fea46c5ad6.zip | |
perf hists: Fix an invalid memory free on he->branch_info
The branch info was allocated for the whole stack and passed matching
hist entry for each level during processing samples. Thus when a hist
entry tries to free its branch info like in hists__collapse_insert_entry
it'll face following error.
*** glibc detected *** perf: munmap_chunk(): invalid pointer: 0x00000000014e9d20 ***
======= Backtrace: =========
/lib64/libc.so.6[0x387d47ae16]
perf[0x4923bd]
perf(cmd_report+0xd68)[0x432a08]
perf[0x41a663]
perf(main+0x58f)[0x419eaf]
/lib64/libc.so.6(__libc_start_main+0xf5)[0x387d421735]
perf[0x419f95]
Fix it by allocating and copying branch info for each new hist entry.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1364816125-12212-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions