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Groups > linux.kernel > #1509291
| From | Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 4.4 077/112] SMB3: GUIDs should be constructed as random but valid uuids |
| Date | 2016-10-26 15:00 +0200 |
| Message-ID | <swvYe-3Qk-33@gated-at.bofh.it> (permalink) |
| References | <swvER-3Eq-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Steve French <smfrench@gmail.com>
commit fa70b87cc6641978b20e12cc5d517e9ffc0086d4 upstream.
GUIDs although random, and 16 bytes, need to be generated as
proper uuids.
Signed-off-by: Steve French <steve.french@primarydata.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Reported-by: David Goebels <davidgoe@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/cifs/cifsfs.c | 2 +-
fs/cifs/connect.c | 2 +-
fs/cifs/smb2ops.c | 2 +-
fs/cifs/smb2pdu.c | 2 +-
4 files changed, 4 insertions(+), 4 deletions(-)
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -268,7 +268,7 @@ cifs_alloc_inode(struct super_block *sb)
cifs_inode->createtime = 0;
cifs_inode->epoch = 0;
#ifdef CONFIG_CIFS_SMB2
- get_random_bytes(cifs_inode->lease_key, SMB2_LEASE_KEY_SIZE);
+ generate_random_uuid(cifs_inode->lease_key);
#endif
/*
* Can not set i_flags here - they get immediately overwritten to zero
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -2200,7 +2200,7 @@ cifs_get_tcp_session(struct smb_vol *vol
memcpy(&tcp_ses->dstaddr, &volume_info->dstaddr,
sizeof(tcp_ses->dstaddr));
#ifdef CONFIG_CIFS_SMB2
- get_random_bytes(tcp_ses->client_guid, SMB2_CLIENT_GUID_SIZE);
+ generate_random_uuid(tcp_ses->client_guid);
#endif
/*
* at this point we are the only ones with the pointer
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -1037,7 +1037,7 @@ smb2_set_lease_key(struct inode *inode,
static void
smb2_new_lease_key(struct cifs_fid *fid)
{
- get_random_bytes(fid->lease_key, SMB2_LEASE_KEY_SIZE);
+ generate_random_uuid(fid->lease_key);
}
#define SMB2_SYMLINK_STRUCT_SIZE \
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -1186,7 +1186,7 @@ create_durable_v2_buf(struct cifs_fid *p
buf->dcontext.Timeout = 0; /* Should this be configurable by workload */
buf->dcontext.Flags = cpu_to_le32(SMB2_DHANDLE_FLAG_PERSISTENT);
- get_random_bytes(buf->dcontext.CreateGuid, 16);
+ generate_random_uuid(buf->dcontext.CreateGuid);
memcpy(pfid->create_guid, buf->dcontext.CreateGuid, 16);
/* SMB2_CREATE_DURABLE_HANDLE_REQUEST is "DH2Q" */
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