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Hermes SMTP Server) with ESMTPA ID 4f620351a53c03e30d3a3c39e442e2df; Thu, 19 Sep 2024 16:37:13 +0000 (UTC) Message-ID: <1a38172e-ef03-4a87-9200-cfbe20c3bb77@schaufler-ca.com> Date: Thu, 19 Sep 2024 09:37:11 -0700 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] [audit?] general protection fault in smack_log_callback To: Paul Moore , syzbot Cc: audit@vger.kernel.org, eparis@redhat.com, jmorris@namei.org, john.johansen@canonical.com, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, serge@hallyn.com, syzkaller-bugs@googlegroups.com, Casey Schaufler References: <66ec25cb.050a0220.92ef1.001e.GAE@google.com> Content-Language: en-US From: Casey Schaufler In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Mailer: WebService/1.1.22645 mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo On 9/19/2024 9:05 AM, Paul Moore wrote: > On Thu, Sep 19, 2024 at 9:23 AM syzbot > wrote: >> Hello, >> >> syzbot found the following issue on: >> >> HEAD commit: bdf56c7580d2 Merge tag 'slab-for-6.12' of git://git.kernel.. >> git tree: upstream >> console output: https://syzkaller.appspot.com/x/log.txt?x=12584b00580000 >> kernel config: https://syzkaller.appspot.com/x/.config?x=4540f5bcdd31e3de >> dashboard link: https://syzkaller.appspot.com/bug?extid=044fdf24e96093584232 >> compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 >> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=155cffc7980000 >> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16ad24a9980000 >> >> Downloadable assets: >> disk image: https://storage.googleapis.com/syzbot-assets/cec9f3c675f1/disk-bdf56c75.raw.xz >> vmlinux: https://storage.googleapis.com/syzbot-assets/21e06ae5b159/vmlinux-bdf56c75.xz >> kernel image: https://storage.googleapis.com/syzbot-assets/1e936c954b8b/bzImage-bdf56c75.xz >> >> The issue was bisected to: >> >> commit 5f8d28f6d7d568dbbc8c5bce94894474c07afd4f >> Author: Casey Schaufler >> Date: Wed Jul 10 21:32:26 2024 +0000 >> >> lsm: infrastructure management of the key security blob >> >> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1124d69f980000 >> final oops: https://syzkaller.appspot.com/x/report.txt?x=1324d69f980000 >> console output: https://syzkaller.appspot.com/x/log.txt?x=1524d69f980000 > I just posted a patch which I believe should fix the problem, but I'd > like to get Casey's ACK on it before submitting upstream as it does > touch Smack code; lore link below: Thanks for jumping on this. Your build and test cycle is faster than mine. > > https://lore.kernel.org/linux-security-module/20240919155740.29539-2-paul@paul-moore.com > > .. in the meantime, I'm attaching the patch here so syzbot can verify > that it solves the problem. > > #syz test >