Description: Uninitialized function pointer (lookup) triggered when mounting and operating a crafted xfs image
References:
 https://bugzilla.kernel.org/show_bug.cgi?id=199367
 https://git.kernel.org/pub/scm/fs/xfs/xfs-linux.git/commit/?h=for-next&id=afca6c5b2595fc44383919fba740c194b0b76aff
Notes:
Bugs:
upstream: released (4.18-rc1) [afca6c5b2595fc44383919fba740c194b0b76aff]
4.19-upstream-stable: N/A "Fixed before branch point"
4.9-upstream-stable: needed
3.16-upstream-stable: released (3.16.58) [7744e6b42712dd27e2457e1eb03b1c73920364c2]
sid: released (4.17.14-1)
4.19-buster-security: N/A "Fixed before branching point"
4.9-stretch-security: needed
3.16-jessie-security: released (3.16.59-1)