Re: [syzbot] [bcachefs?] KASAN: use-after-free Read in bch2_extent_ptr_to_text

From: syzbot
Date: Tue Nov 18 2025 - 06:02:48 EST


syzbot suspects this issue was fixed by commit:

commit f2c61db29f277b9c80de92102fc532cc247495cd
Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Mon Sep 29 20:43:52 2025 +0000

Remove bcachefs core code

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13b43914580000
start commit: 8f9736633f8c Merge tag 'trace-v6.17-rc7' of git://git.kern..
git tree: upstream
kernel config: https://syzkaller.appspot.com/x/.config?x=f5b21423ca3f0a96
dashboard link: https://syzkaller.appspot.com/bug?extid=564efbe31172fe908429
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16d48334580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12e7bf12580000

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

#syz fix: Remove bcachefs core code

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