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Thu, 05 Oct 2023 03:46:28 -0700 (PDT) Date: Thu, 05 Oct 2023 03:46:28 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000001824660606f5d6ac@google.com> Subject: Re: [syzbot] [integrity] [overlayfs] possible deadlock in mnt_want_write (2) From: syzbot To: amir73il@gmail.com, hdanton@sina.com, linux-fsdevel@vger.kernel.org, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-unionfs@vger.kernel.org, miklos@szeredi.hu, mszeredi@redhat.com, syzbot@syzkalhler.appspotmail.com, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk, zohar@linux.ibm.com, zohar@us.ibm.com Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: B46C840006 X-Stat-Signature: 8qytdf3bzh55rs57drfquo3n1aaf4d8k X-HE-Tag: 1696502789-607068 X-HE-Meta: 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 6Sedc6vf 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 KGP97pLL NanSutVxaJ8= 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: Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-and-tested-by: syzbot+b42fe626038981fb7bfa@syzkaller.appspotmail.com Tested on: commit: 42555f30 ima: annotate iint mutex to avoid lockdep fal.. git tree: https://github.com/amir73il/linux ima-ovl-fix console output: https://syzkaller.appspot.com/x/log.txt?x=16889486680000 kernel config: https://syzkaller.appspot.com/x/.config?x=57da1ac039c4c78a dashboard link: https://syzkaller.appspot.com/bug?extid=b42fe626038981fb7bfa 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.