diff options
| author |   Steven Rostedt <srostedt@redhat.com> | 2012-11-29 22:27:22 -0500 |
|---|---|---|
| committer |   Steven Rostedt <rostedt@goodmis.org> | 2012-11-30 11:09:28 -0500 |
| commit | 54f7be5b831254199522523ccab4c3d954bbf576 (patch) | |
| tree | 7a65782f3bb7f67438db53444b59e8206916d478 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | ftrace: Clear bits properly in reset_iter_read() (diff) | |
| download | linux-dev-54f7be5b831254199522523ccab4c3d954bbf576.tar.xz linux-dev-54f7be5b831254199522523ccab4c3d954bbf576.zip | |
ring-buffer: Fix NULL pointer if rb_set_head_page() fails
The function rb_set_head_page() searches the list of ring buffer
pages for a the page that has the HEAD page flag set. If it does
not find it, it will do a WARN_ON(), disable the ring buffer and
return NULL, as this should never happen.
But if this bug happens to happen, not all callers of this function
can handle a NULL pointer being returned from it. That needs to be
fixed.
Cc: stable@vger.kernel.org # 3.0+
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions