UBIFS Dump Stack on Android

[Han Xu]

Hi Richard,

We found an issue on Kernel 4.1 when running Android on UBIFS. Android
required to enable SELINUX and exposed the issue, one ubifs_assert()
function failed and caused dump stack.

--- a/fs/ubifs/xattr.c
+++ b/fs/ubifs/xattr.c
@@ -309,7 +309,6 @@ static int setxattr(struct inode *host, const char
*name, const void *value,
        union ubifs_key key;
        int err, type;

        ubifs_assert(mutex_is_locked(&host->i_mutex));

It may related to your recent code change
UBIFS: Kill unneeded locking in ubifs_init_security

We also noticed Google maintained Kernel 4.1 AOSP didn't cherry-pick
the patch either. Could you please help to check this issue, Thanks.