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syzbot is reporting uninit-value at shrinker_alloc(), for commit307bececcd("mm: shrinker: add a secondary array for shrinker_info::{map, nr_deferred}") which assumed that the ->unit was allocated with __GFP_ZERO forgot to replace kvmalloc_node() in expand_one_shrinker_info() with kvzalloc_node(). Link: https://lkml.kernel.org/r/9226cc0a-10e0-4489-80c5-58c3b5b4359c@I-love.SAKURA.ne.jp Reported-by: syzbot <syzbot+1e0ed05798af62917464@syzkaller.appspotmail.com> Closes: https://syzkaller.appspot.com/bug?extid=1e0ed05798af62917464 Fixes:307bececcd("mm: shrinker: add a secondary array for shrinker_info::{map, nr_deferred}") Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Qi Zheng <zhengqi.arch@bytedance.com> Cc: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.