diff options
| author | Oleg Nesterov <oleg@redhat.com> | 2013-07-23 11:26:10 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-29 12:47:32 -0400 |
| commit | 7272711a2fc64dd6ef980630e129d8731897ee56 (patch) | |
| tree | 58dd0de2f65dc3700aed83808f1c5f3ecbc2eef8 /kernel/mutex-debug.c | |
| parent | e5dd03c411713c066b94e1d448359e5216115c1c (diff) | |
tracing: Change tracing_fops/snapshot_fops to rely on tracing_get_cpu()
commit 6484c71cbc170634fa131b6d022d86d61686b88b upstream.
tracing_open() and tracing_snapshot_open() are racy, the memory
inode->i_private points to can be already freed.
Convert these last users of "inode->i_private == trace_cpu" to
use "i_private = trace_array" and rely on tracing_get_cpu().
v2: incorporate the fix from Steven, tracing_release() must not
blindly dereference file->private_data unless we know that
the file was opened for reading.
Link: http://lkml.kernel.org/r/20130723152610.GA23737@redhat.com
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/mutex-debug.c')
0 files changed, 0 insertions, 0 deletions