Re: [syzbot] [bcachefs?] kernel BUG in bch2_reconstruct_snapshots

From: syzbot
Date: Thu Jun 19 2025 - 14:11:11 EST


syzbot suspects this issue was fixed by commit:

commit 757601ef853359fe2d57d75c00b5045f62efc608
Author: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Date: Sun Jun 8 15:40:00 2025 +0000

bcachefs: Don't put rhashtable on stack

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13b01d0c580000
start commit: 128c8f96eb86 Merge tag 'drm-fixes-2025-02-14' of https://g..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=e55cabe422b4fcaf
dashboard link: https://syzkaller.appspot.com/bug?extid=b4cb4a6988aced0cec4b
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16d5d9b0580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=112099a4580000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: bcachefs: Don't put rhashtable on stack

For information about bisection process see: https://goo.gl/tpsmEJ#bisection