diff options
| author | Tejun Heo <tj@kernel.org> | 2018-03-14 12:10:17 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-22 09:18:00 +0100 |
| commit | aa14f4bd6c4f32b19cdbfe37d918d1cb3baaf260 (patch) | |
| tree | ee86697312c6ee17328944f92be7f273bb9be4b2 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 48226104275c0d8ddf307e432de8f6e6c5316bff (diff) | |
fs/aio: Use RCU accessors for kioctx_table->table[]
commit d0264c01e7587001a8c4608a5d1818dba9a4c11a upstream.
While converting ioctx index from a list to a table, db446a08c23d
("aio: convert the ioctx list to table lookup v3") missed tagging
kioctx_table->table[] as an array of RCU pointers and using the
appropriate RCU accessors. This introduces a small window in the
lookup path where init and access may race.
Mark kioctx_table->table[] with __rcu and use the approriate RCU
accessors when using the field.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Jann Horn <jannh@google.com>
Fixes: db446a08c23d ("aio: convert the ioctx list to table lookup v3")
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: stable@vger.kernel.org # v3.12+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions