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| author | Oleg Nesterov <oleg@redhat.com> | 2013-07-23 17:26:10 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@rostedt.homelinux.com> | 2013-07-24 11:22:53 -0400 |
| commit | 6484c71cbc170634fa131b6d022d86d61686b88b (patch) | |
| tree | 68f696f4985f368a2fa7f93a2d474fea2c7585db /kernel/trace/ftrace.c | |
| parent | 0bc392ee46d0fd8e6b678457ef71f074f19a03c5 (diff) | |
| download | op-kernel-dev-6484c71cbc170634fa131b6d022d86d61686b88b.zip op-kernel-dev-6484c71cbc170634fa131b6d022d86d61686b88b.tar.gz | |
tracing: Change tracing_fops/snapshot_fops to rely on tracing_get_cpu()
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>
Diffstat (limited to 'kernel/trace/ftrace.c')
0 files changed, 0 insertions, 0 deletions
