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b=kzEGu3GndeI7HhP/4+w3f8WhO9zIibC2nDGGxqHpGYgQpITxyhAX8E4+FYF5ywplQ TKGM4CAIFsHFs3ybovgU9nGj0/lMuMxT6e8j27OK26RBvVZNzgYGCR6theqj7iQMAE OaHkR78sw1jmTmQTttJ11vJEzUXPiTII/olsG0Tg= Date: Sat, 28 Sep 2024 06:56:20 -0700 From: Andrew Morton To: syzbot Cc: dmitry.kasatkin@gmail.com, ebpqwerty472123@gmail.com, eric.snowberg@oracle.com, hughd@google.com, jmorris@namei.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-security-module@vger.kernel.org, paul@paul-moore.com, roberto.sassu@huawei.com, serge@hallyn.com, stephen.smalley.work@gmail.com, syzkaller-bugs@googlegroups.com, zohar@linux.ibm.com, Greg Kroah-Hartman , stable@kernel.org Subject: Re: [syzbot] [integrity?] [lsm?] possible deadlock in process_measurement (4) Message-Id: <20240928065620.7abadb2d8552f03d785c77c9@linux-foundation.org> In-Reply-To: <66f7b10e.050a0220.46d20.0036.GAE@google.com> References: <66f7b10e.050a0220.46d20.0036.GAE@google.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: D53D31C0014 X-Stat-Signature: dmon8qoiangagsat3fkkcmufphnyeq3n X-Rspam-User: X-HE-Tag: 1727531782-553526 X-HE-Meta: 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 cjv/vxeH 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sat, 28 Sep 2024 00:32:30 -0700 syzbot wrote: > Hello, > > syzbot found the following issue on: Thanks. > HEAD commit: 97d8894b6f4c Merge tag 'riscv-for-linus-6.12-mw1' of git:/.. > git tree: upstream > console+strace: https://syzkaller.appspot.com/x/log.txt?x=14138a80580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=bc30a30374b0753 > dashboard link: https://syzkaller.appspot.com/bug?extid=1cd571a672400ef3a930 > 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=118fd2a9980000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1038299f980000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/f181c147328d/disk-97d8894b.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/b8b0160d9b09/vmlinux-97d8894b.xz > kernel image: https://storage.googleapis.com/syzbot-assets/c5dab0d4f811/bzImage-97d8894b.xz > > The issue was bisected to: > > commit ea7e2d5e49c05e5db1922387b09ca74aa40f46e2 > Author: Shu Han > Date: Tue Sep 17 09:41:04 2024 +0000 > > mm: call the security_mmap_file() LSM hook in remap_file_pages() That commit has cc:stable. Can I suggest that you change sysbot so it includes a cc:stable if the faulty commit had cc:stable? If Greg agrees that would be useful?