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ANDROID: sdcardfs: d_splice_alias can return error values 

We must check that d_splice_alias was successful before using its
output.

Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 62390017
Change-Id: Ifda0a052fb3f67e35c635a4e5e907876c5400978
This commit is contained in:
Daniel Rosenberg 2017-06-07 12:44:50 -07:00 committed by LuK1337
parent 240b1685e2
commit 571f240520
1 changed files with 2 additions and 1 deletions
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3
fs/sdcardfs/lookup.c
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@ -199,7 +199,8 @@ static struct dentry *__sdcardfs_interpose(struct dentry *dentry,
ret_dentry = d_splice_alias(inode, dentry);
dentry = ret_dentry ?: dentry;
update_derived_permission_lock(dentry);
if (!IS_ERR(dentry))
update_derived_permission_lock(dentry);
out:
return ret_dentry;
}