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smb/server: fix minimum SMB1 PDU size

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Since the RFC1002 header has been removed from `struct smb_hdr`,
the minimum SMB1 PDU size should be updated as well.

Fixes: 83bfbd0bb9 ("cifs: Remove the RFC1002 header from smb_hdr")
Suggested-by: David Howells <dhowells@redhat.com>
Suggested-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: ChenXiaoSong <chenxiaosong@kylinos.cn>
Reviewed-by: David Howells <dhowells@redhat.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
ChenXiaoSong
2025-12-20 21:25:50 +08:00
committed by Steve French
parent 0b444cfd8b
commit 3b9c30eb8f
1 changed files with 3 additions and 2 deletions
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5
fs/smb/server/connection.c
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@@ -295,7 +295,8 @@ bool ksmbd_conn_alive(struct ksmbd_conn *conn)
return true;
}
#define SMB1_MIN_SUPPORTED_HEADER_SIZE (sizeof(struct smb_hdr))
/* "+2" for BCC field (ByteCount, 2 bytes) */
#define SMB1_MIN_SUPPORTED_PDU_SIZE (sizeof(struct smb_hdr) + 2)
#define SMB2_MIN_SUPPORTED_HEADER_SIZE (sizeof(struct smb2_hdr) + 4)
/**
@@ -363,7 +364,7 @@ int ksmbd_conn_handler_loop(void *p)
if (pdu_size > MAX_STREAM_PROT_LEN)
break;
if (pdu_size < SMB1_MIN_SUPPORTED_HEADER_SIZE)
if (pdu_size < SMB1_MIN_SUPPORTED_PDU_SIZE)
break;
/* 4 for rfc1002 length field */