Commit-ID: 93574fcc5b50cc7b8834698acb2ce947e5b6a5dc Gitweb: http://git.kernel.org/tip/93574fcc5b50cc7b8834698acb2ce947e5b6a5dc Author: Dan Carpenter <[email protected]> AuthorDate: Wed, 11 Jul 2012 09:35:08 +0300 Committer: Steven Rostedt <[email protected]> CommitDate: Wed, 11 Jul 2012 19:56:26 -0400
tracing: Check for allocation failure in __tracing_open() Clean up and return -ENOMEM on if the kzalloc() fails. This also prevents a potential crash, as the pointer that failed to allocate would be later used. Link: http://lkml.kernel.org/r/[email protected] Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Signed-off-by: Dan Carpenter <[email protected]> Signed-off-by: Steven Rostedt <[email protected]> --- kernel/trace/trace.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 814ff30..a120f98 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2390,6 +2390,9 @@ __tracing_open(struct inode *inode, struct file *file) iter->buffer_iter = kzalloc(sizeof(*iter->buffer_iter) * num_possible_cpus(), GFP_KERNEL); + if (!iter->buffer_iter) + goto release; + /* * We make a copy of the current tracer to avoid concurrent * changes on it while we are reading. @@ -2451,6 +2454,7 @@ __tracing_open(struct inode *inode, struct file *file) mutex_unlock(&trace_types_lock); kfree(iter->trace); kfree(iter->buffer_iter); +release: seq_release_private(inode, file); return ERR_PTR(-ENOMEM); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
