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b=JCDTG7yWV3lfOfydcImpyi17b3P3GZLuSATHpoliBde4zFx8fh61QvaCh34B/HHii pJ27gbrypWJWTH4Ulv+LOs72Quk/MUQ6LEtzHk02x8ZrpVtg5X87QGI4Nl3RU6aGOd lbBJpjgNUXe1JyH6/xkSaHKgUVe/JH/zCh1uPdHSwDpYxG/tMvoJ6iGev/uMqQHTV4 SjvlJSoXJyzeQtNvM3gIcK9CnH290NCNuDjzDbc4fDFlbBYmlnB7RJzXJxV3foHm6E 9exKHGGww7iriJrIByK4WlNzn/KZiugBpkenja+mrf9Vg9KpQqyMj1qWw4b0Ao2ATp aQQdmL5ydsFsg== Date: Sun, 9 Nov 2025 14:39:18 +0100 From: Christian Brauner To: syzbot Cc: Liam.Howlett@oracle.com, akpm@linux-foundation.org, anna-maria@linutronix.de, bpf@vger.kernel.org, bsegall@google.com, cgroups@vger.kernel.org, david@redhat.com, dietmar.eggemann@arm.com, frederic@kernel.org, hannes@cmpxchg.org, jack@suse.cz, jsavitz@redhat.com, juri.lelli@redhat.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, mkoutny@suse.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, tglx@linutronix.de, tj@kernel.org, vbabka@suse.cz, vincent.guittot@linaro.org, viro@zeniv.linux.org.uk, vschneid@redhat.com Subject: Re: [syzbot] [fs?] WARNING in destroy_super_work Message-ID: <20251109-lesung-erkaufen-476f6fb00b1b@brauner> References: <690da04f.a70a0220.22f260.0027.GAE@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <690da04f.a70a0220.22f260.0027.GAE@google.com> X-Stat-Signature: 5u4aei73i5qsir1tznrhehu9h3g9tazz X-Rspam-User: X-Rspamd-Queue-Id: C6AAC80011 X-Rspamd-Server: rspam01 X-HE-Tag: 1762695570-684145 X-HE-Meta: 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 GtXC4EI4 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 FQvBXAim f6trNoSHCjVTEX7sqxS0jujfCylz8HxCmKnnDE2CtRwiB0bsraPVbTLs0QP3V/by 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 Thu, Nov 06, 2025 at 11:31:27PM -0800, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: 982312090977 Add linux-next specific files for 20251103 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=17b2932f980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=43cc0e31558cb527 > dashboard link: https://syzkaller.appspot.com/bug?extid=1957b26299cf3ff7890c > compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1347817c580000 > > Downloadable assets: > disk image: https://storage.googleapis.com/syzbot-assets/40058f8a830c/disk-98231209.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/1d7f42e8639f/vmlinux-98231209.xz > kernel image: https://storage.googleapis.com/syzbot-assets/d8bb0284f393/bzImage-98231209.xz > > The issue was bisected to: > > commit 3c9820d5c64aeaadea7ffe3a6bb99d019a5ff46a > 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=101e9bcd980000 > final oops: https://syzkaller.appspot.com/x/report.txt?x=121e9bcd980000 > console output: https://syzkaller.appspot.com/x/log.txt?x=141e9bcd980000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+1957b26299cf3ff7890c@syzkaller.appspotmail.com > Fixes: 3c9820d5c64a ("ns: add active reference count") #syz test: https://github.com/brauner/linux.git namespace-6.19.fixes