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SubjectRe: [syzbot] kernel BUG at fs/ext4/inline.c:LINE!
On Mon, 29 Aug 2022 at 16:19, Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Mon, Aug 29, 2022 at 05:17:13AM -0700, syzbot wrote:
> > syzbot suspects this issue was fixed by commit:
> >
> > commit 1045a06724f322ed61f1ffb994427c7bdbe64647
> > Author: Christoph Hellwig <hch@lst.de>
> > Date: Wed Jun 29 15:01:02 2022 +0000
> >
> > remove CONFIG_ANDROID
> >
> > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16ab0893080000
> > start commit: a8ad9a2434dc Merge tag 'efi-urgent-for-v5.16-2' of git://g..
> > git tree: upstream
> > kernel config: https://syzkaller.appspot.com/x/.config?x=2ebd4b29568807bc
> > dashboard link: https://syzkaller.appspot.com/bug?extid=4faa160fa96bfba639f8
> > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=114ae045b00000
> > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1785e92bb00000
> >
> > If the result looks correct, please mark the issue as fixed by replying with:
> >
> > #syz fix: remove CONFIG_ANDROID
> >
> > For information about bisection process see: https://goo.gl/tpsmEJ#bisection
>
> I really doubt that ext4 has anything to do with the removal of
> CONFIG_ANDROID

Agree.

Looking at:
$ git log --oneline fs/ext4/inline.c

The following recent commit fixes a very similar failure mode:

#syz fix: ext4: fix bug_on in ext4_writepages

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