Description: Double free in lib/idr.c
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=1694812
 https://marc.info/?t=127366612300001&r=1&w=2
 https://marc.info/?l=linux-kernel&m=127422151819010&w=2
 https://lore.kernel.org/patchwork/patch/205534/
 ttps://marc.info/?t=136035740900005&r=1&w=2
Notes:
Bugs:
upstream: released (2.6.35-rc1) [2dcb22b346be7b7b7e630a8970d69cf3f1111ec1], released (3.9-rc1) [326cf0f0f308933c10236280a322031f0097205d]
4.19-upstream-stable: N/A "Fixed before branching point"
4.9-upstream-stable: N/A "Fixed before branching point"
3.16-upstream-stable: N/A "Fixed before branching point"
sid: released (3.2.41-1)
4.9-stretch-security: N/A "Fixed before branching point"
3.16-jessie-security: N/A "Fixed before branching point"