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GET /api/1.1/patches/2225216/?format=api
{ "id": 2225216, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2225216/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/aeZG4xhoMhYFSsIy@v4bel/", "project": { "id": 12, "url": "http://patchwork.ozlabs.org/api/1.1/projects/12/?format=api", "name": "Linux CIFS Client", "link_name": "linux-cifs-client", "list_id": "linux-cifs.vger.kernel.org", "list_email": "linux-cifs@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<aeZG4xhoMhYFSsIy@v4bel>", "date": "2026-04-20T15:31:47", "name": "ksmbd: scope conn->binding slowpath to bound sessions only", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "3b690cb80b68d2194d5142c9bb8edad58c46fb9f", "submitter": { "id": 92809, "url": "http://patchwork.ozlabs.org/api/1.1/people/92809/?format=api", "name": "Hyunwoo Kim", "email": "imv4bel@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/aeZG4xhoMhYFSsIy@v4bel/mbox/", "series": [ { "id": 500629, "url": "http://patchwork.ozlabs.org/api/1.1/series/500629/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=500629", "date": "2026-04-20T15:31:47", "name": "ksmbd: scope conn->binding slowpath to bound sessions only", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500629/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2225216/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2225216/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-cifs+bounces-10943-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-cifs@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=D1D3ux0V;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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charset=us-ascii", "Content-Disposition": "inline" }, "content": "When the binding SESSION_SETUP sets conn->binding = true, the flag stays\nset after the call so that the global session lookup in\nksmbd_session_lookup_all() can find the session, which was not added to\nconn->sessions. Because the flag is connection-wide, the global lookup\npath will also resolve any other session by id if asked.\n\nTighten the global lookup so that the returned session must have this\nconnection registered in its channel xarray (sess->ksmbd_chann_list).\nThe channel entry is installed by the existing binding_session path in\nntlm_authenticate()/krb5_authenticate() when a SESSION_SETUP completes\nsuccessfully, so this condition is a strict equivalent of \"this\nconnection has been accepted as a channel of this session\". Connections\nthat have not bound to a given session cannot reach it via the global\ntable.\n\nThe existing conn->binding gate for entering the slowpath is preserved\nso that non-binding connections keep the fast-path-only behavior, and\nthe session->state check is unchanged.\n\nFixes: f5a544e3bab7 (\"ksmbd: add support for SMB3 multichannel\")\nSigned-off-by: Hyunwoo Kim <imv4bel@gmail.com>\n---\n fs/smb/server/mgmt/user_session.c | 7 ++++++-\n 1 file changed, 6 insertions(+), 1 deletion(-)", "diff": "diff --git a/fs/smb/server/mgmt/user_session.c b/fs/smb/server/mgmt/user_session.c\nindex a86589408835..ab8852da76f0 100644\n--- a/fs/smb/server/mgmt/user_session.c\n+++ b/fs/smb/server/mgmt/user_session.c\n@@ -547,8 +547,13 @@ struct ksmbd_session *ksmbd_session_lookup_all(struct ksmbd_conn *conn,\n \tstruct ksmbd_session *sess;\n \n \tsess = ksmbd_session_lookup(conn, id);\n-\tif (!sess && conn->binding)\n+\tif (!sess && conn->binding) {\n \t\tsess = ksmbd_session_lookup_slowpath(id);\n+\t\tif (sess && !xa_load(&sess->ksmbd_chann_list, (long)conn)) {\n+\t\t\tksmbd_user_session_put(sess);\n+\t\t\tsess = NULL;\n+\t\t}\n+\t}\n \tif (sess && sess->state != SMB2_SESSION_VALID) {\n \t\tksmbd_user_session_put(sess);\n \t\tsess = NULL;\n", "prefixes": [] }