From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (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 79A077FB for ; Sun, 5 May 2024 00:35:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714869306; cv=none; b=fp4rlGazpPzh5HknXUYKVzNN+SJYxVYcQveYghDsci/udWzOwCTnjaJoqdAVL4YsflXdgIviSUavV6uXwPlB+syQd8VdHyR0UsfrVPYfIASDWLtVJReaEjkaqAxuZaSVYrPSZ44eoqQCxmhxQ+DHAEt8x/2Uj5P/ZhFYB6o1OeM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714869306; c=relaxed/simple; bh=3lWAJAfUZvClkbre3n9Mn5LFR4Th6NocSJxukhF+bcc=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=aVEzkGPM7Rrue732ZXxCzPsm9bsozO4ui6w3C9xnKO0bAb5D9KxdfJhWNLHFoiKIr5CLCyRYU09q2IB2Id8tFAB37rFs290R6hBib2FbdK7v7ck/CVDFPdF1NWBtcY1y/omGhjn5PtEaC/YCE/7nT+Gepxa2BVLP/6UYXPpTKHI= 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=209.85.166.72 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-io1-f72.google.com with SMTP id ca18e2360f4ac-7da41c44e78so94067839f.1 for ; Sat, 04 May 2024 17:35:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714869304; x=1715474104; 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=GQCgYFbXCI7Q2niaNhE+aI9odULkuIJr2iIWjifovcE=; b=nmoz9CRi0FNfUIsG9svgLNr8TlTlivFHt6nvb+W8Ieqb1pXhlMBhMQ+JXwm9nwxD0J i/mGnP+uPSxS4rDFEUD9Trm0o6U5W2LPHRNMcubEyqfkCAGyWalxyZsx5xIsazF4nZR9 pFMzwZrFB9zyMg5wbum27URM7F7knXJ4ld36UFwqv2H8NPMbNDfwecmQEXMrwEvY3jfB URZnVn/vMaMmJqv0SrcPB/Yfox1nKZrKJ7J2EJuFEsDu5yxlvG4a32FCp70qaPhAUoSv JhD/9t7q7cgH72ghTSHVYnoap5irNpWnsjzLzsBTMRDT59xuYr6UbdFkjh1UT5UfdQDj NFDA== X-Forwarded-Encrypted: i=1; AJvYcCX3m+rjxs0NkOWrvG7BNXhMmc1KCiw8+FNR/PWlec1P35IjOW+KTz0QMMd1gPzcZV3K9Ssrp0Qn4bQHsgZRM2YQ07UyH6RUzCKwgLK67w== X-Gm-Message-State: AOJu0YzOpwXamqVSaCHrqlynyV01JDzPaHXfa4Gj6RgQhGmxrKTlEbAi zuKIQ+0Jsn7M3YUbnUBSrmt83aV2qfr5nxxRzlXWTlSFHmYIO3+QhnBpVh+5zEzw11Wlh0WSktB MQQzx3fg9XKiWS2Y8sHuGpDLav9fErsxFHShQwRsyKwSDVkD7P3ZXsVQ= X-Google-Smtp-Source: AGHT+IGh+xKJ+7qu7/Kpc0kJl8tdSzMHzURQUBwlqmWGnbvGT87sd1no6wsbnRY27qj6vprI8ShhDr4RJxAvf8ptQ+TdM8P9qgTW Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:614b:b0:487:cd4:4bda with SMTP id ez11-20020a056638614b00b004870cd44bdamr247216jab.4.1714869304673; Sat, 04 May 2024 17:35:04 -0700 (PDT) Date: Sat, 04 May 2024 17:35:04 -0700 In-Reply-To: <0000000000003392c606179ddd1a@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000bdedb60617aa1f12@google.com> Subject: Re: [syzbot] [bcachefs] KASAN: use-after-free Read in scatterwalk_copychunks From: syzbot To: bfoster@redhat.com, davem@davemloft.net, herbert@gondor.apana.org.au, kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-crypto@vger.kernel.org, linux-fsdevel@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 dc6f2eb000d76ac8f93f4d59a8012ddfccca927a Author: Kent Overstreet Date: Wed Apr 17 05:26:02 2024 +0000 bcachefs: make btree read errors silent during scan bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16629450980000 start commit: 9221b2819b8a Add linux-next specific files for 20240503 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=15629450980000 console output: https://syzkaller.appspot.com/x/log.txt?x=11629450980000 kernel config: https://syzkaller.appspot.com/x/.config?x=8ab537f51a6a0d98 dashboard link: https://syzkaller.appspot.com/bug?extid=8c4acf719c3fc41e8439 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=111abc97180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10059004980000 Reported-by: syzbot+8c4acf719c3fc41e8439@syzkaller.appspotmail.com Fixes: dc6f2eb000d7 ("bcachefs: make btree read errors silent during scan") For information about bisection process see: https://goo.gl/tpsmEJ#bisection