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Mon, 3 Aug 2026 09:07:12 +0000 (GMT) Message-ID: Date: Mon, 3 Aug 2026 11:07:11 +0200 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: Lockdep circular dependency: btrfs_swap_activate() calls sysfs_notify() From: Christian Borntraeger To: Qu Wenruo , Chris Mason , David Sterba , Qu Wenruo Cc: linux-btrfs@vger.kernel.org, "linux-kernel@vger.kernel.org" References: <782c4d5c-d93b-42b3-b4ca-58deb3d8a894@linux.ibm.com> <11be35c2-7ede-4c83-b21f-39e52c3b04a2@gmx.com> <6a5c7341-6e88-4eaf-8311-0de81b3d1015@linux.ibm.com> Content-Language: en-US In-Reply-To: <6a5c7341-6e88-4eaf-8311-0de81b3d1015@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODAzMDA3NyBTYWx0ZWRfX1R5W5BUM2rQn oASwArK0jSCIK5d0aGCYBVFHoExKcsk/Cw4jS5LCyhXZLQ5ocG7RYLJjYgPeGYno2aN2IY4DcR0 NK9msKQY1uDkK3A2izKzeXXfu5Wce0Nfk7Ze2t37xej286nUec6K9eyvmcIRLsrXJaetIQw0iv2 4gTY8tAOn7/n1ZyS5IPN9o7OAuejWEZ6OJr99JTSem2eSAGTda9cEJTwEANyFi0vzcme/maiYkM wDbPHPyvhspPGpzmEGZq7/MtgL9Nfi1291WlnF2Q4+QkaaxLf8Uorbjdgy/halYilpwJ3u1ncrE qwgDtACWfsLrh0ehwzflzHlkFM5c9vcBMDLbT+8gvNn4txgV+veoljOfAU4HAqawBpTR4XslbgA /LpTM+xIy9zMWir9tQ7qeQN0pVgSqgBoNF8pQgBwGqIs47S3pWgHTQsoEw6rRES+6O1dG24wfPS hlB6z1yCEnSaXBSRw1g== X-Authority-Analysis: v=2.4 cv=WIFPmHsR c=1 sm=1 tr=0 ts=6a705a43 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=QQJeTcF6qchfQrgI5ZUA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: ZrbWQOtSPzuRdBXR-l0k-XHnOv66y5cO X-Proofpoint-ORIG-GUID: zcpar5YZdA9v1vJ8izQ6e0Y0_15ANhDp X-Proofpoint-Spam-Info: AW1haW4tMjYwODAzMDA3NyBTYWx0ZWRfX3Rmg6rzBbn0f LnsCYdzqR/EBwxIk+UcavNqq4f8mlLIMCHYl1eO5hoxwzUmZ0O8PqXN+WV+CklTO8Jf8cw4Q8PT d72EhYeYXJtOWnH9wzZnMmWe0qKVbjM= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-02_06,2026-07-30_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 malwarescore=0 suspectscore=0 clxscore=1015 impostorscore=0 bulkscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608030077 Am 31.07.26 um 13:14 schrieb Christian Borntraeger: > > > Am 31.07.26 um 13:12 schrieb Qu Wenruo: >> >> >> 在 2026/7/31 20:27, Christian Borntraeger 写道: >>> One or more of the following files ( btrfs-swapon-kernfs-repro.sh ) violates IBM policy and all attachment(s) have been removed from the message. > > Oh. > > > Lets try this: > #!/bin/bash > # Reproducer for the lockdep circular dependency > # Can you reproduce the lockdep message?