From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 731C6C133 for ; Wed, 11 Jun 2025 06:47:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749624423; cv=none; b=DJGmMSYPKcLPeZCbijn7FbhU4lh+nfccY/0rtWpQQ4pyOK3gFh8SGjbTyZsDxycxiuH2hB509dnPS8FvHs7RU2q+XU2eycom+IMyhwDHXpF5W1InU0gofeF7hXM09me1lf7O6a0vHNb2Mv26FBMGqh9WuRx9Z95KdMd90s+oSVE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749624423; c=relaxed/simple; bh=PwJ8H9eZhuNLJmD0SmVtkG+wVoyXdS2gv+ziwXoJL+4=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=mJQ1tm2UpMnvw08UC6XGmhK0Y8tk5jjmbXVWXZt07NQwaSX41HDXhEguC3Hx4k2PdAY/DZ579MG0+F7DtHaEZJoPaJZFKc3asgpW+dWxLEYiPqkKLqKEKOTtAUb2eJgLtD4JXQHqZ42aWGYfcsuAv0AD2DL4pUPpeDgmjsmVqEA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.198 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f198.google.com with SMTP id e9e14a558f8ab-3ddc65f95b8so137670175ab.3 for ; Tue, 10 Jun 2025 23:47:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749624421; x=1750229221; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=MewqcPGn/QokpfcEkkNeQEgd0jbUGHA58K19z6AhSKM=; b=vBzOV8OXrGcj3b5UxDy04oJQnCV+VEK1H+/0sAp+ckR3P2Llxh/PLpHJmY34gsG53z DaTQ4TlW3wnAno0OoltnfJWMxs7IZiPno+3T5CMa/TarisYuD9X8dJ69dU6Su5eusKMJ FRuYaubc6sTHeVytAl5wHmQ0rczpQgzlw39GaloQ4opH5WDLIfnffzyBcPT5NPk36H1V b39dGkZ9SGJcr+omrB91QagREYTyb15JDzgs6Qyoqt+q5YWN8+wQH8wmuaS/eNmk9Jde SUpgn2YKkUDL5uDwsnVOarXY5dgve6zNYzRpQFwtY1VpGHQS+m9g9GPhmZFKOaWyUAom UrKQ== X-Forwarded-Encrypted: i=1; AJvYcCW1lLVRaHMzM/9gYlnvz25Z4OuAcM12qQBjID+easNZCHWzdZXiFF2Jx9d1OqY4VoALKa1WVB4PdVW6jBY=@vger.kernel.org X-Gm-Message-State: AOJu0YwspvWmBFdAeodqTYJl/iD9e76FCOIPnHEuFbW+pRbOUEBjVYJc Y8RArAKQs5301yWrszET9p4yu2ptBTdY7D9S/3lPG1kilMsnK4wTCKRGuGi1skMxnH76ceYgkbH JGEHvlwUGIPW8trkP87NLVy2JF4ashVo9Wfc0QCcKYogfHTSueimICxBcoj0= X-Google-Smtp-Source: AGHT+IEU0X6hgxJuMlbG52LfRb7xkLAfxhgoWO2FaYvbH2006dQ0XfZLHXNKlTM6m7pa1LMgOPpaWC0xHZvEdX/HposVl04bZF/P Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1807:b0:3dd:cdea:8f85 with SMTP id e9e14a558f8ab-3ddf4300c5cmr22610735ab.20.1749624421733; Tue, 10 Jun 2025 23:47:01 -0700 (PDT) Date: Tue, 10 Jun 2025 23:47:01 -0700 In-Reply-To: <68488453.a70a0220.27c366.0068.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68492665.050a0220.33aa0e.0366.GAE@google.com> Subject: Re: [syzbot] [bcachefs?] divide error in bch2_sb_members_v2_to_text From: syzbot To: kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit c5ae261c8095a37174e17eb13c5485cbd1b3bb20 Author: Kent Overstreet 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=10c319d4580000 start commit: b27cc623e01b Add linux-next specific files for 20250610 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=12c319d4580000 console output: https://syzkaller.appspot.com/x/log.txt?x=14c319d4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=846e731334efc0f8 dashboard link: https://syzkaller.appspot.com/bug?extid=7c8101d4d0ba2eb511d7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=175a260c580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1129e9d4580000 Reported-by: syzbot+7c8101d4d0ba2eb511d7@syzkaller.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