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Sun, 09 Nov 2025 00:24:02 -0800 (PST) Date: Sun, 09 Nov 2025 00:24:02 -0800 In-Reply-To: <690bfb9e.050a0220.2e3c35.0013.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69104fa2.a70a0220.22f260.00a5.GAE@google.com> Subject: Re: [syzbot] [fs?] WARNING in nsproxy_ns_active_put From: syzbot To: Liam.Howlett@Oracle.com, Liam.Howlett@oracle.com, akpm@linux-foundation.org, bpf@vger.kernel.org, brauner@kernel.org, bsegall@google.com, david@redhat.com, dietmar.eggemann@arm.com, jack@suse.cz, jsavitz@redhat.com, juri.lelli@redhat.com, kartikey406@gmail.com, kees@kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-security-module@vger.kernel.org, lorenzo.stoakes@oracle.com, mgorman@suse.de, mhocko@suse.com, mingo@redhat.com, mjguzik@gmail.com, oleg@redhat.com, paul@paul-moore.com, peterz@infradead.org, rostedt@goodmis.org, rppt@kernel.org, sergeh@kernel.org, surenb@google.com, syzkaller-bugs@googlegroups.com, vbabka@suse.cz, vincent.guittot@linaro.org, viro@zeniv.linux.org.uk, vschneid@redhat.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 7AE3120002 X-Stat-Signature: bcxdo9ddcds16cj5qqpn6wfnyfk5g6qk X-Rspam-User: X-HE-Tag: 1762676643-937383 X-HE-Meta: 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 xLKJFl9m 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 IVRbzIFm mi42Q0pHvakSj/+39LUdg5tJqviW+8g/l7S0EuveMaoe1XBUKX52/UbPfRTvESOaVWPjuvC2auAQcwt430DnyW9Y+96wCzh9HKKRPhQqhLE1yOaiOerwk1lFrW8L/blVMKMkppB7BFbRlmpU/pOOjlvZ0tf+EcIjLbSClyHx5s5SYpLJRTfRIiaU3YPu0PAa 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: syzbot has bisected this issue to: commit 3a18f809184bc5a1cfad7cde5b8b026e2ff61587 Author: Christian Brauner Date: Wed Oct 29 12:20:24 2025 +0000 ns: add active reference count bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11a350b4580000 start commit: 9c0826a5d9aa Add linux-next specific files for 20251107 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=13a350b4580000 console output: https://syzkaller.appspot.com/x/log.txt?x=15a350b4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f2ebeee52bf052b8 dashboard link: https://syzkaller.appspot.com/bug?extid=0b2e79f91ff6579bfa5b syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1639d084580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1625aa92580000 Reported-by: syzbot+0b2e79f91ff6579bfa5b@syzkaller.appspotmail.com Fixes: 3a18f809184b ("ns: add active reference count") For information about bisection process see: https://goo.gl/tpsmEJ#bisection