Re: [syzbot] [bcachefs?] kernel BUG in __bch2_str_hash_check_key

From: syzbot
Date: Thu Apr 24 2025 - 02:32:37 EST


syzbot has bisected this issue to:

commit d37c14ac6f05ec98db9b3d9db424dc73a0f5b1cd
Author: Joshua Ashton <joshua@xxxxxxxxx>
Date: Sun Aug 13 17:34:17 2023 +0000

bcachefs: bcachefs_metadata_version_casefolding

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10718ecc580000
start commit: a79be02bba5c Fix mis-uses of 'cc-option' for warning disab..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=12718ecc580000
console output: https://syzkaller.appspot.com/x/log.txt?x=14718ecc580000
kernel config: https://syzkaller.appspot.com/x/.config?x=3bbffc3b5b4301e1
dashboard link: https://syzkaller.appspot.com/bug?extid=843981bb836d699c07d1
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11f8c1b3980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=177ce574580000

Reported-by: syzbot+843981bb836d699c07d1@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: d37c14ac6f05 ("bcachefs: bcachefs_metadata_version_casefolding")

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