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Commit 4fce2666 authored by Daniel Rosenberg's avatar Daniel Rosenberg
Browse files

ANDROID: sdcardfs: Check for NULL in revalidate 



If the inode is in the process of being evicted,
the top value may be NULL.

Signed-off-by: default avatarDaniel Rosenberg <drosen@google.com>
Bug: 38502532
Change-Id: I0b9d04aab621e0398d44d1c5dc53293106aa5f89
parent 638eed3f

fs/sdcardfs/dentry.c

+5 −3
Original line number Diff line number Diff line
@@ -109,14 +109,16 @@ static int sdcardfs_d_revalidate(struct dentry *dentry, unsigned int flags) 
		goto out;



	/* If our top's inode is gone, we may be out of date */

	inode = d_inode(dentry);

	inode = igrab(d_inode(dentry));

	if (inode) {

		data = top_data_get(SDCARDFS_I(inode));

		if (data->abandoned) {

		if (!data || data->abandoned) {

			d_drop(dentry);

			err = 0;

		}

		if (data)

			data_put(data);

		iput(inode);

	}



out: