user/sven/linux.git/fs, branch v6.6.102

smb: server: Fix extension string in ksmbd_extract_shortname()

2025-08-15T10:09:06Z

commit 8e7d178d06e8937454b6d2f2811fa6a15656a214 upstream. In ksmbd_extract_shortname(), strscpy() is incorrectly called with the length of the source string (excluding the NUL terminator) rather than the size of the destination buffer. This results in "__" being copied to 'extension' rather than "___" (two underscores instead of three). Use the destination buffer size instead to ensure that the string "___" (three underscores) is copied correctly. Cc: stable@vger.kernel.org Fixes: e2f34481b24d ("cifsd: add server-side procedures for SMB3") Signed-off-by: Thorsten Blum Acked-by: Namjae Jeon Signed-off-by: Steve French Signed-off-by: Greg Kroah-Hartman

ksmbd: limit repeated connections from clients with the same IP

2025-08-15T10:09:06Z

commit e6bb9193974059ddbb0ce7763fa3882bd60d4dc3 upstream. Repeated connections from clients with the same IP address may exhaust the max connections and prevent other normal client connections. This patch limit repeated connections from clients with the same IP. Reported-by: tianshuo han Cc: stable@vger.kernel.org Signed-off-by: Namjae Jeon Signed-off-by: Steve French Signed-off-by: Greg Kroah-Hartman

ksmbd: fix corrupted mtime and ctime in smb2_open

2025-08-15T10:09:06Z

commit 4f8ff9486fd94b9d6a4932f2aefb9f2fc3bd0cf6 upstream. If STATX_BASIC_STATS flags are not given as an argument to vfs_getattr, It can not get ctime and mtime in kstat. This causes a problem showing mtime and ctime outdated from cifs.ko. File: /xfstest.test/foo Size: 4096 Blocks: 8 IO Block: 1048576 regular file Device: 0,65 Inode: 2033391 Links: 1 Access: (0755/-rwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root) Context: system_u:object_r:cifs_t:s0 Access: 2025-07-23 22:15:30.136051900 +0100 Modify: 1970-01-01 01:00:00.000000000 +0100 Change: 1970-01-01 01:00:00.000000000 +0100 Birth: 2025-07-23 22:15:30.136051900 +0100 Cc: stable@vger.kernel.org Reported-by: David Howells Signed-off-by: Namjae Jeon Signed-off-by: Steve French Signed-off-by: Greg Kroah-Hartman

ksmbd: fix Preauh_HashValue race condition

2025-08-15T10:09:06Z

commit 44a3059c4c8cc635a1fb2afd692d0730ca1ba4b6 upstream. If client send multiple session setup requests to ksmbd, Preauh_HashValue race condition could happen. There is no need to free sess->Preauh_HashValue at session setup phase. It can be freed together with session at connection termination phase. Cc: stable@vger.kernel.org Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-27661 Signed-off-by: Namjae Jeon Signed-off-by: Steve French Signed-off-by: Greg Kroah-Hartman

ksmbd: fix null pointer dereference error in generate_encryptionkey

2025-08-15T10:09:05Z

commit 9b493ab6f35178afd8d619800df9071992f715de upstream. If client send two session setups with krb5 authenticate to ksmbd, null pointer dereference error in generate_encryptionkey could happen. sess->Preauth_HashValue is set to NULL if session is valid. So this patch skip generate encryption key if session is valid. Cc: stable@vger.kernel.org Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-27654 Signed-off-by: Namjae Jeon Signed-off-by: Steve French Signed-off-by: Greg Kroah-Hartman

smb: client: return an error if rdma_connect does not return within 5 seconds

2025-08-15T10:09:05Z

[ Upstream commit 03537826f77f1c829d0593d211b38b9c876c1722 ] This matches the timeout for tcp connections. Cc: Steve French Cc: Tom Talpey Cc: Long Li Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Fixes: f198186aa9bb ("CIFS: SMBD: Establish SMB Direct connection") Signed-off-by: Stefan Metzmacher Signed-off-by: Steve French Signed-off-by: Sasha Levin

smb: client: let recv_done() cleanup before notifying the callers.

2025-08-15T10:09:04Z

[ Upstream commit bdd7afc6dca5e0ebbb75583484aa6ea9e03fbb13 ] We should call put_receive_buffer() before waking up the callers. For the internal error case of response->type being unexpected, we now also call smbd_disconnect_rdma_connection() instead of not waking up the callers at all. Note that the SMBD_TRANSFER_DATA case still has problems, which will be addressed in the next commit in order to make it easier to review this one. Cc: Steve French Cc: Tom Talpey Cc: Long Li Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Fixes: f198186aa9bb ("CIFS: SMBD: Establish SMB Direct connection") Signed-off-by: Stefan Metzmacher Signed-off-by: Steve French Signed-off-by: Sasha Levin

smb: client: make sure we call ib_dma_unmap_single() only if we called ib_dma_map_single already

2025-08-15T10:09:04Z

[ Upstream commit 047682c370b6f18fec818b57b0ed8b501bdb79f8 ] In case of failures either ib_dma_map_single() might not be called yet or ib_dma_unmap_single() was already called. We should make sure put_receive_buffer() only calls ib_dma_unmap_single() if needed. Cc: Steve French Cc: Tom Talpey Cc: Long Li Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Fixes: f198186aa9bb ("CIFS: SMBD: Establish SMB Direct connection") Signed-off-by: Stefan Metzmacher Signed-off-by: Steve French Signed-off-by: Sasha Levin

smb: client: make use of common smbdirect_socket

2025-08-15T10:09:04Z

[ Upstream commit c3011b9a7deaaaabdf955815d29eac39c8b75e67 ] This is the next step in the direction of a common smbdirect layer. Currently only structures are shared, but that will change over time until everything is shared. Cc: Steve French Cc: Tom Talpey Cc: Long Li Cc: Namjae Jeon Cc: Hyunchul Lee Cc: Meetakshi Setiya Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher Signed-off-by: Steve French Stable-dep-of: 5349ae5e05fa ("smb: client: let send_done() cleanup before calling smbd_disconnect_rdma_connection()") Signed-off-by: Sasha Levin

smb: smbdirect: add smbdirect_socket.h

2025-08-15T10:09:04Z

[ Upstream commit 22234e37d7e97652cb53133009da5e14793d3c10 ] This abstracts the common smbdirect layer. Currently with just a few things in it, but that will change over time until everything is in common. Will be used in client and server in the next commits Cc: Steve French Cc: Tom Talpey Cc: Long Li Cc: Namjae Jeon Cc: Hyunchul Lee Cc: Meetakshi Setiya Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Stefan Metzmacher Signed-off-by: Steve French Stable-dep-of: 5349ae5e05fa ("smb: client: let send_done() cleanup before calling smbd_disconnect_rdma_connection()") Signed-off-by: Sasha Levin