Messages in this thread Patch in this message | | | Date | Wed, 01 Nov 2023 17:37:20 -0400 | From | Steven Rostedt <> | Subject | [for-next][PATCH 02/12] eventfs: Remove extra dget() in eventfs_create_events_dir() |
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From: "Steven Rostedt (Google)" <rostedt@goodmis.org>
The creation of the top events directory does a dget() at the end of the creation in eventfs_create_events_dir() with a comment saying the final dput() will happen when it is removed. The problem is that a dget() is already done on the dentry when it was created with tracefs_start_creating()! The dget() now just causes a memory leak of that dentry.
Remove the extra dget() as the final dput() in the deletion of the events directory actually matches the one in tracefs_start_creating().
Link: https://lore.kernel.org/linux-trace-kernel/20231031124229.4f2e3fa1@gandalf.local.home
Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Fixes: 5790b1fb3d672 ("eventfs: Remove eventfs_file and just use eventfs_inode") Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> --- fs/tracefs/event_inode.c | 3 --- 1 file changed, 3 deletions(-)
diff --git a/fs/tracefs/event_inode.c b/fs/tracefs/event_inode.c index 4d2da7480e5f..5536860eb2ff 100644 --- a/fs/tracefs/event_inode.c +++ b/fs/tracefs/event_inode.c @@ -774,9 +774,6 @@ struct eventfs_inode *eventfs_create_events_dir(const char *name, struct dentry fsnotify_mkdir(dentry->d_parent->d_inode, dentry); tracefs_end_creating(dentry); - /* Will call dput when the directory is removed */ - dget(dentry); - return ei; fail: -- 2.42.0
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