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 12C1D200CB5 for ; Wed, 6 Nov 2024 15:22:04 +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=1730906526; cv=none; b=ZW0k5ew50Efj8bONaTq4/vNuOZpiy4knzkDsROpaIxfiLETBHJPUtEnHqmMIJBG/Fk+x59CPTxenOggrtfqnWec1V+ujhSRiuuyr93oMgWAal4i+aGWf5852hVnW1y75snpfeLJLjgwROX+6sct7EBZTgt3BZg2fAImyzhGz5Po= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730906526; c=relaxed/simple; bh=hwQb6Bgpzxjusi1sNjee+JRXjDmZXCInqM6lgcIFXi0=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=RDzeDUm3PhUVSCtdFEij5A6ovFO7DFbRS/pu52XJ7jKQwbZK384nrwz6Wuo3EcyIPXCXzxFFRp0CYAVZIaXokAoWQa42ulNDSaxu04MTb6QFu5SpkmBkIjU2OOfzDab5UqmZ4i1RVCUpSlgR3dEmfIdUSnUidjWZ2Ax9LAOsW3M= 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-3a3b9c5bcd8so70077305ab.2 for ; Wed, 06 Nov 2024 07:22:04 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1730906524; x=1731511324; 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=TxtIZrToYDUsmz51BXFewoWsiGAdqJraREWxLhVJXpA=; b=i1ZMioZ/RQQhOndDytQI5L5IU4IvTqKbc9j5wSeEE84/VI2VEg/gHctkZkRoI2r946 dWAKG1lQBVJCxSJW4iq0FHVMUwGOwYB6HPbtYKjX9qEXBa/zvj6ZM0KrAqbLFOy21ZZn 4gSu8KR50jIxAcohPafQeXxrbiXW0WTcXsLZupMXowwkMMgN1bUqtSk4bnafGe69YLsv 2sViEDfauXea9xHMv5YQa24IjqGdfnpARQ2oBCe5XqdKvMu1ex+s9BYWhUzlXh810vND PiWXYxzLsl3E4jw0xvxzcZTVt9fi1U4R2K5cL7eMCLjGLgElMQLyqWgiSYaWe01l/leW yydg== X-Forwarded-Encrypted: i=1; AJvYcCXv95K8FiDbt6X1vg4DC8SHa/QzhYMD2yu+SxPafh8m2cQCpDgu6MNg/FXuiELqrqq7/AEKaMME/pDCoZk=@vger.kernel.org X-Gm-Message-State: AOJu0YwgvXPEbTGRUps0Fyyyp/5Zj4LpUeNYpfhBKvr3jkePSkr5eObV uKUP0z1iS9Km+uBjPNaWIh7Zuhr3gyEn/RUEJK7pdRrboEvgCjJjF8uVA4w5dXiA5xSzgq2r+ui Eh45kQ1rfy8438G0CdRsjzHnuq8oqByLZolSHjO1Up6VAmAqYKS1Fnm0= X-Google-Smtp-Source: AGHT+IGB0fuX92rvZS/mWn27iW0EG8h6GUgkVshI6dXgd3sqA8coI/pcSaFgr7mzopz8lL1dOWvuvS+ns96sVHW4jkdJMv2qVU9o Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:505:b0:3a5:e1f5:156a with SMTP id e9e14a558f8ab-3a5e1f51a6bmr238666775ab.2.1730906524025; Wed, 06 Nov 2024 07:22:04 -0800 (PST) Date: Wed, 06 Nov 2024 07:22:04 -0800 In-Reply-To: <671c2223.050a0220.2fdf0c.021c.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <672b899c.050a0220.350062.026d.GAE@google.com> Subject: Re: [syzbot] [ext4?] KASAN: use-after-free Write in ext4_insert_dentry From: syzbot To: adilger.kernel@dilger.ca, adilger@dilger.ca, eadavis@qq.com, jack@suse.cz, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, lkp@intel.com, llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, oe-lkp@lists.linux.dev, oliver.sang@intel.com, sandeen@redhat.com, syzkaller-bugs@googlegroups.com, tytso@mit.edu Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit 5872331b3d91820e14716632ebb56b1399b34fe1 Author: Eric Sandeen Date: Wed Jun 17 19:19:04 2020 +0000 ext4: fix potential negative array index in do_split() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15b9ce30580000 start commit: 2e1b3cc9d7f7 Merge tag 'arm-fixes-6.12-2' of git://git.ker.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=17b9ce30580000 console output: https://syzkaller.appspot.com/x/log.txt?x=13b9ce30580000 kernel config: https://syzkaller.appspot.com/x/.config?x=921b01cbfd887a9b dashboard link: https://syzkaller.appspot.com/bug?extid=0c99c3f90699936c1e77 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=173636a7980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1600cf40580000 Reported-by: syzbot+0c99c3f90699936c1e77@syzkaller.appspotmail.com Fixes: 5872331b3d91 ("ext4: fix potential negative array index in do_split()") For information about bisection process see: https://goo.gl/tpsmEJ#bisection