linux-kernel - Re: [syzbot] KMSAN: uninit-value in pagecache

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Message-ID: <CAG_fn=VPvdHxQc3xm5xkqgFq3uo5oTU_w5vyMj-qQD7DvwQ4BA@mail.gmail.com>
Date:   Tue, 8 Nov 2022 10:08:36 +0100
From:   Alexander Potapenko <glider@...gle.com>
To:     Eric Biggers <ebiggers@...nel.org>
Cc:     syzbot <syzbot+9767be679ef5016b6082@...kaller.appspotmail.com>,
        adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        tytso@....edu
Subject: Re: [syzbot] KMSAN: uninit-value in pagecache_write

> >
> > Anyway, this patch doesn't hurt, I suppose.  Can please you send it out as a
> > formal patch to linux-ext4?  It would be easy for people to miss this patch
> > buried in this thread.  Also, can you please send a patch to linux-f2fs-devel
> > for the same code in fs/f2fs/verity.c?
>
> Will do!

Shall I also initialize fsdata here:

$ git grep 'void \*fsdata;'
fs/affs/file.c:         void *fsdata;
fs/ext4/verity.c:               void *fsdata;
fs/f2fs/verity.c:               void *fsdata;
fs/hfs/extent.c:                void *fsdata;
fs/hfsplus/extents.c:           void *fsdata;
fs/ocfs2/mmap.c:        void *fsdata;

?