syzbot suspects this issue was fixed by commit:
commit 282ab3ff16120ec670fe3330e85f8ebf13092f21
Author: David Sterba <[email protected]>
Date: Mon Oct 14 12:38:33 2019 +0000
btrfs: reduce compressed_bio members' types
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12d5f6f2300000
start commit: 7f75285ca572 Merge tag 'for-5.12/dm-fixes-3' of git://git...
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=b5591c832f889fd9
dashboard link: https://syzkaller.appspot.com/bug?extid=45d7c243c006f39dc55a
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=164f385ad00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1427af9ad00000
If the result looks correct, please mark the issue as fixed by replying with:
#syz fix: btrfs: reduce compressed_bio members' types
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
On Fri, Jul 16, 2021 at 04:07:06PM -0700, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
>
> commit 282ab3ff16120ec670fe3330e85f8ebf13092f21
> Author: David Sterba <[email protected]>
> Date: Mon Oct 14 12:38:33 2019 +0000
>
> btrfs: reduce compressed_bio members' types
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12d5f6f2300000
> start commit: 7f75285ca572 Merge tag 'for-5.12/dm-fixes-3' of git://git...
> git tree: upstream
> kernel config: https://syzkaller.appspot.com/x/.config?x=b5591c832f889fd9
> dashboard link: https://syzkaller.appspot.com/bug?extid=45d7c243c006f39dc55a
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=164f385ad00000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1427af9ad00000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: btrfs: reduce compressed_bio members' types
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
That's completely unrelated and probably result of unreliable
biscection. There's a different patch referenced in the dashboard
https://groups.google.com/g/syzkaller-lts-bugs/c/ntHpclbYBMM/m/WG3hW1DvAgAJ
commit 25487a5ff100398cb214ae854358609e4bbd4e7d
Author: Johannes Berg <[email protected]>
Date: Mon May 17 14:47:17 2021 +0000
mac80211: remove warning in ieee80211_get_sband()
that looks more relevant but I don't know if it's the real fix.