tag 7e6ca0ed15faa9d34e740f55a6220b61d47317ef
tagger Todd Kjos <tkjos@google.com> Mon Feb 07 12:41:27 2022 -0800
object a2429bd75fe959e3bf866aa5005606031b5c16be

https://source.android.com/security/bulletin/2022-02-01
CVE-2021-39685
CVE-2021-39686

commit a2429bd75fe959e3bf866aa5005606031b5c16be
author Tadeusz Struk <tadeusz.struk@linaro.org> Wed Jan 26 13:09:39 2022 -0800
committer Tadeusz Struk <tadeusz.struk@linaro.org> Wed Feb 02 10:42:44 2022 -0800
tree d4bc229dd70d701bd3a3277eb651a26db2e2dc06
parent a0e42d1642d70466f42102966d5934a20c725952

ANDROID: incremental-fs: remove index and incomplete dir on umount

Cleanup incremental-fs left overs on umount, otherwise incr-fs will
complain as below:

BUG: Dentry {i=47a,n=.incomplete} still in use [unmount of incremental-fs]

This requires vfs_rmdir() of the special index dir.
Since set_anon_super() was used in incfs_mount_fs() the incfs_kill_sb()
should use kill_anon_super() instead of generic_shutdown_super()
otherwise it will leak the pseudo dev_t that set_anon_super() allocates.

Bug: 211066171

Signed-off-by: Tadeusz Struk <tadeusz.struk@linaro.org>
Change-Id: I7ea54db63513fc130e1997cbf79121015ee12405