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([2a01:e11:5400:7400:ff60:75e8:cc8e:6028]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5cb66c6b556sm2479577a12.63.2024.10.21.17.19.21 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 21 Oct 2024 17:19:24 -0700 (PDT) Message-ID: <2ae7d2b0-0053-4cff-9352-d180c243ded4@gmail.com> Date: Tue, 22 Oct 2024 02:19:19 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [syzbot] [udf?] general protection fault in udf_read_folio To: jan Kara References: <6716ebf5.050a0220.10f4f4.00db.GAE@google.com> From: Gianfranco Trad Content-Language: en-US, it Cc: syzbot , linux-kernel@vger.kernel.org In-Reply-To: <6716ebf5.050a0220.10f4f4.00db.GAE@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 22/10/24 02:04, syzbot wrote: > Hello, > > syzbot has tested the proposed patch and the reproducer did not trigger any issue: > > Reported-by: syzbot+ddf8715339c89280b6fc@syzkaller.appspotmail.com > Tested-by: syzbot+ddf8715339c89280b6fc@syzkaller.appspotmail.com > > Tested on: > > commit: c2ee9f59 KVM: selftests: Fix build on on non-x86 archi.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=12684640580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=fc6f8ce8c5369043 > dashboard link: https://syzkaller.appspot.com/bug?extid=ddf8715339c89280b6fc > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > > Note: no patches were applied. > Note: testing is done by a robot and is best-effort only. Hi Jan, syzbot reported a null-ptr-deref in udf_read_folio a month ago [1]. This bug was marked as still open on syzbot, so I retested the reproducer (no patch applied) to check if the bug was still valid upstream, seems not (as reported up). Wondering if syzbot will now try to find another reproducer, since after this check the reproducer was crossed away on the syzbot web UI, or if the bug can be considered closed. I hope this might help. [1] https://syzkaller.appspot.com/bug?extid=ddf8715339c89280b6fc Thanks for your time, --Gian