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SubjectRe: KASAN: null-ptr-deref Write in start_transaction
On Fri, Jan 08, 2021 at 02:22:00PM +0000, Filipe Manana wrote:
> On Thu, Jan 7, 2021 at 1:13 PM syzbot
> <syzbot+6700bca07dff187809c4@syzkaller.appspotmail.com> wrote:
> >
> > syzbot suspects this issue was fixed by commit:
> >
> > commit f30bed83426c5cb9fce6cabb3f7cc5a9d5428fcc
> > Author: Filipe Manana <fdmanana@suse.com>
> > Date: Fri Nov 13 11:24:17 2020 +0000
> >
> > btrfs: remove unnecessary attempt to drop extent maps after adding inline extent
> >
> > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13ddc30b500000
> > start commit: 521b619a Merge tag 'linux-kselftest-kunit-fixes-5.10-rc3' ..
> > git tree: upstream
> > kernel config: https://syzkaller.appspot.com/x/.config?x=61033507391c77ff
> > dashboard link: https://syzkaller.appspot.com/bug?extid=6700bca07dff187809c4
> > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14a07ab2500000
> > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10fe69c6500000
> >
> > If the result looks correct, please mark the issue as fixed by replying with:
> >
> > #syz fix: btrfs: remove unnecessary attempt to drop extent maps after adding inline extent
>
> Nop, it can't be this change.
>
> What should fix it should be the following commit:
>
> commit ecfdc08b8cc65d737eebc26a1ee1875a097fd6a0
> Author: Goldwyn Rodrigues <rgoldwyn@suse.com>
> Date: Thu Sep 24 11:39:21 2020 -0500
>
> btrfs: remove dio iomap DSYNC workaround

Thanks!

#syz unfix

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