In the Linux kernel, the following vulnerability has been resolved:

mm/damon/sysfs-schemes: fix dir put orders in access_pattern_add_dirs()

Patch series "mm/damon/sysfs-schemes: fix wrong directories put orders in
error paths".

Error paths of damon_sysfs_access_pattern_add_dirs() and
damon_sysfs_scheme_add_dirs() functions put references to directories in
wrong orders.  As a result, uninitialized memory dereference and/or
memory leak can happen.  Fix those.


This patch (of 2):

In access_pattern_add_dirs(), error handling path puts references starting
from setup failed directories.  If the failure happpened from the initial
allication in the setup functions, uninitialized memory dereference
happen.  The allocation failures will not commonly happen, but the
consequence is quite bad.  Fix the wrong reference put orders.

The issue was discovered [1] by Sashiko.

https://git.kernel.org/stable/c/0710cc97962ca3bcabaa15ce7fead300faf726cd

https://git.kernel.org/stable/c/a8c0592a80e954825f2ba29e7f32893f1df762f2

https://git.kernel.org/stable/c/d58fdbe37a829fd2e5803dd4e5a72992dd8c5368

https://git.kernel.org/stable/c/e03442b0c48bdb034f5b7cf9f3b76d8025576071

https://git.kernel.org/stable/c/ee59df7a886a35113f309e3eb791060c46f79bb1

https://git.kernel.org/stable/c/f18c561eb9c51f1ba3adb6117926a98a66599848

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