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charset="us-ascii" Content-ID: <0820FBFD37C13A40820F7C47397E2063@namprd11.prod.outlook.com> Content-Transfer-Encoding: quoted-printable Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Exchange-RoutingPolicyChecked: kJFGqiS7khpypLnDXSfk3K+3fdOMZW0wvZ6kFi2+tx0zIBpRlZPUg/VgwJXZpdiqJOUQJPVjid4sdZb9DiIa+NrXMsG//uygV8mNuyBEGOg5RJoBk8TJ/CcExAcj/+sx164f2ipFzPThQM9GzGyA154Bxd7zD+W2DTUwpnWDWMWc6Sye7SBJv6oe80hIiLaxRXpcj82BdOPb1gm1KR3pYrGETHEIjtw1Sdjcr7iySk928K9CmXcqtcND2Sz2B+FJ8RCFkRoFhKd1XuKJW0tGEEJ0in0ZACwmCen58v42bI5CG4H/Z9uJhkF41BK6ooSjTTt6LlsgFpeKwvtPZMSCwg== X-OriginatorOrg: cisco.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: CH3PR11MB8775.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 873f1286-b8c8-4a67-6915-08dea633d58f X-MS-Exchange-CrossTenant-originalarrivaltime: 29 Apr 2026 21:11:08.8962 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: fB9g6yjsYkN3hu7UlU0QkcKLWDJ9FwItlWG9y+Aea2CR3m1+VDrGO3Apz6qA7aJcCgTA8xeDsG91tvTmExmRLQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR11MB6917 X-Outbound-Client-TLS: ANONYMOUS;rcdn-opgw-5.cisco.com [72.163.7.169];TLSv1.3;TLS_AES_256_GCM_SHA384;256 X-Outbound-SMTP-Client: 72.163.7.169, rcdn-opgw-5.cisco.com X-Outbound-Node: aer-l-core-09.cisco.com On Wed, Apr 29, 2026 at 05:24:25PM +0200, Oleg Nesterov wrote: > On 04/29, David Hildenbrand (Arm) wrote: > > > > On 4/29/26 15:15, Darko Tominac wrote: > > > > > uprobe infrastructure does not re-instrument pages on individual page > > > faults (uprobe_mmap() is only called during VMA creation, not on > > > page-in), the breakpoints are silently lost once the discarded pages = are > > > re-read from the backing file. The probes stop firing with no error > > > indication, and the only recovery is to unregister and re-register th= e > > > affected uprobes. > > > > Right. Don't MADV_DONTNEED uprobes, just like you are not supposed to > > MADV_DONTNEED debugger breakpoints/set data etc. :) >=20 > Agreed, thanks. Shouldn't there be some sort of compensation or notification for this, or i= s each person that hits this suppose to just scratch their head and send a patch that's reject= ed? Daniel=