linux-kernel - Re: [syzbot] [bcachefs?] KASAN: slab-out-of-bounds Read in bch2_sb_members_v1_to

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Message-ID: <6849c9fe.a00a0220.1eb5f5.00f4.GAE@google.com>
Date: Wed, 11 Jun 2025 11:25:02 -0700
From: syzbot <syzbot+e577022d4fba380653be@...kaller.appspotmail.com>
To: kent.overstreet@...ux.dev, linux-bcachefs@...r.kernel.org, 
	linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [bcachefs?] KASAN: slab-out-of-bounds Read in bch2_sb_members_v1_to_text

syzbot has bisected this issue to:

commit c5ae261c8095a37174e17eb13c5485cbd1b3bb20
Author: Kent Overstreet <kent.overstreet@...ux.dev>
Date:   Sun Jun 8 15:31:23 2025 +0000

    bcachefs: Don't trust sb->nr_devices in members_to_text()

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15a6ad70580000
start commit:   b27cc623e01b Add linux-next specific files for 20250610
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=17a6ad70580000
console output: https://syzkaller.appspot.com/x/log.txt?x=13a6ad70580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=846e731334efc0f8
dashboard link: https://syzkaller.appspot.com/bug?extid=e577022d4fba380653be
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12a5e9d4580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1766260c580000

Reported-by: syzbot+e577022d4fba380653be@...kaller.appspotmail.com
Fixes: c5ae261c8095 ("bcachefs: Don't trust sb->nr_devices in members_to_text()")

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