xfs: Fix assert failure in xfs_setattr_size()

commit 88a9e03beef22cc5fabea344f54b9a0dfe63de08 upstream.

An assert failure is triggered by syzkaller test due to
ATTR_KILL_PRIV is not cleared before xfs_setattr_size.
As ATTR_KILL_PRIV is not checked/used by xfs_setattr_size,
just remove it from the assert.

Signed-off-by: Yumei Huang <yuhuang@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index 1414ab7..b7f7b31 100644 (file)
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -865,7 +865,7 @@ xfs_setattr_size(
        ASSERT(xfs_isilocked(ip, XFS_MMAPLOCK_EXCL));
        ASSERT(S_ISREG(inode->i_mode));
        ASSERT((iattr->ia_valid & (ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_ATIME_SET|
-               ATTR_MTIME_SET|ATTR_KILL_PRIV|ATTR_TIMES_SET)) == 0);
+               ATTR_MTIME_SET|ATTR_TIMES_SET)) == 0);
 
        oldsize = inode->i_size;
        newsize = iattr->ia_size;