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GET /api/1.1/patches/2231598/?format=api
{ "id": 2231598, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2231598/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260430220601.76266-1-rosenp@gmail.com/", "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": "<20260430220601.76266-1-rosenp@gmail.com>", "date": "2026-04-30T22:06:01", "name": "cifssmb: use struct_offset in memcpy calculations", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "2ade8404233d7111d6d6d3e5f63b03d3c9d0f0c6", "submitter": { "id": 70304, "url": "http://patchwork.ozlabs.org/api/1.1/people/70304/?format=api", "name": "Rosen Penev", "email": "rosenp@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-cifs-client/patch/20260430220601.76266-1-rosenp@gmail.com/mbox/", "series": [ { "id": 502398, "url": "http://patchwork.ozlabs.org/api/1.1/series/502398/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-cifs-client/list/?series=502398", "date": "2026-04-30T22:06:01", "name": "cifssmb: use struct_offset in memcpy calculations", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/502398/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2231598/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2231598/checks/", "tags": {}, "headers": { "Return-Path": "\n <linux-cifs+bounces-11316-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=VqSD8WzE;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=172.234.253.10; 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Simpler\nand avoids excess casting.\n\nSigned-off-by: Rosen Penev <rosenp@gmail.com>\n---\n fs/smb/client/cifssmb.c | 40 +++++++++++++---------------------------\n 1 file changed, 13 insertions(+), 27 deletions(-)", "diff": "diff --git a/fs/smb/client/cifssmb.c b/fs/smb/client/cifssmb.c\nindex 3990a9012264..8598cec5ebbd 100644\n--- a/fs/smb/client/cifssmb.c\n+++ b/fs/smb/client/cifssmb.c\n@@ -4090,9 +4090,9 @@ CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,\n \t\t\t\t get_bcc(&pSMBr->hdr), 40);\n \t\telse if (pFindData) {\n \t\t\t__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);\n-\t\t\tmemcpy((char *) pFindData,\n-\t\t\t (char *) &pSMBr->hdr.Protocol +\n-\t\t\t data_offset, sizeof(FILE_ALL_INFO));\n+\t\t\tmemcpy(pFindData,\n+\t\t\t (char *)pSMBr + struct_offset(pSMBr, hdr.Protocol) + data_offset,\n+\t\t\t sizeof(FILE_ALL_INFO));\n \t\t} else\n \t\t rc = -ENOMEM;\n \t}\n@@ -4264,9 +4264,8 @@ CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,\n \t\t\t\t get_bcc(&pSMBr->hdr), sizeof(FILE_UNIX_BASIC_INFO));\n \t\t} else {\n \t\t\t__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);\n-\t\t\tmemcpy((char *) pFindData,\n-\t\t\t (char *) &pSMBr->hdr.Protocol +\n-\t\t\t data_offset,\n+\t\t\tmemcpy(pFindData,\n+\t\t\t (char *)pSMBr + struct_offset(pSMBr, hdr.Protocol) + data_offset,\n \t\t\t sizeof(FILE_UNIX_BASIC_INFO));\n \t\t}\n \t}\n@@ -4349,9 +4348,8 @@ CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,\n \t\t\t\t get_bcc(&pSMBr->hdr), sizeof(FILE_UNIX_BASIC_INFO));\n \t\t} else {\n \t\t\t__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);\n-\t\t\tmemcpy((char *) pFindData,\n-\t\t\t (char *) &pSMBr->hdr.Protocol +\n-\t\t\t data_offset,\n+\t\t\tmemcpy(pFindData,\n+\t\t\t (char *)pSMBr + struct_offset(pSMBr, hdr.Protocol) + data_offset,\n \t\t\t sizeof(FILE_UNIX_BASIC_INFO));\n \t\t}\n \t}\n@@ -5079,7 +5077,6 @@ CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon)\n /* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */\n \tTRANSACTION2_QFSI_REQ *pSMB = NULL;\n \tTRANSACTION2_QFSI_RSP *pSMBr = NULL;\n-\tFILE_SYSTEM_ATTRIBUTE_INFO *response_data;\n \tunsigned int in_len;\n \tint rc = 0;\n \tint bytes_returned = 0;\n@@ -5130,11 +5127,8 @@ CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon)\n \t\t\t\t get_bcc(&pSMBr->hdr), 13);\n \t\t} else {\n \t\t\t__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);\n-\t\t\tresponse_data =\n-\t\t\t (FILE_SYSTEM_ATTRIBUTE_INFO\n-\t\t\t *) (((char *) &pSMBr->hdr.Protocol) +\n-\t\t\t\t data_offset);\n-\t\t\tmemcpy(&tcon->fsAttrInfo, response_data,\n+\t\t\tmemcpy(&tcon->fsAttrInfo,\n+\t\t\t (char *)pSMBr + struct_offset(pSMBr, hdr.Protocol) + data_offset,\n \t\t\t sizeof(FILE_SYSTEM_ATTRIBUTE_INFO));\n \t\t}\n \t}\n@@ -5152,7 +5146,6 @@ CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon)\n /* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */\n \tTRANSACTION2_QFSI_REQ *pSMB = NULL;\n \tTRANSACTION2_QFSI_RSP *pSMBr = NULL;\n-\tFILE_SYSTEM_DEVICE_INFO *response_data;\n \tunsigned int in_len;\n \tint rc = 0;\n \tint bytes_returned = 0;\n@@ -5205,11 +5198,8 @@ CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon)\n \t\t\t\t sizeof(FILE_SYSTEM_DEVICE_INFO));\n \t\telse {\n \t\t\t__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);\n-\t\t\tresponse_data =\n-\t\t\t (FILE_SYSTEM_DEVICE_INFO *)\n-\t\t\t\t(((char *) &pSMBr->hdr.Protocol) +\n-\t\t\t\t data_offset);\n-\t\t\tmemcpy(&tcon->fsDevInfo, response_data,\n+\t\t\tmemcpy(&tcon->fsDevInfo,\n+\t\t\t (char *)pSMBr + struct_offset(pSMBr, hdr.Protocol) + data_offset,\n \t\t\t sizeof(FILE_SYSTEM_DEVICE_INFO));\n \t\t}\n \t}\n@@ -5227,7 +5217,6 @@ CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon)\n /* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */\n \tTRANSACTION2_QFSI_REQ *pSMB = NULL;\n \tTRANSACTION2_QFSI_RSP *pSMBr = NULL;\n-\tFILE_SYSTEM_UNIX_INFO *response_data;\n \tunsigned int in_len;\n \tint rc = 0;\n \tint bytes_returned = 0;\n@@ -5277,11 +5266,8 @@ CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon)\n \t\t\t\t get_bcc(&pSMBr->hdr), 13);\n \t\t} else {\n \t\t\t__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);\n-\t\t\tresponse_data =\n-\t\t\t (FILE_SYSTEM_UNIX_INFO\n-\t\t\t *) (((char *) &pSMBr->hdr.Protocol) +\n-\t\t\t\t data_offset);\n-\t\t\tmemcpy(&tcon->fsUnixInfo, response_data,\n+\t\t\tmemcpy(&tcon->fsUnixInfo,\n+\t\t\t (char *)pSMBr + struct_offset(pSMBr, hdr.Protocol) + data_offset,\n \t\t\t sizeof(FILE_SYSTEM_UNIX_INFO));\n \t\t}\n \t}\n", "prefixes": [] }