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three smb3 client fixes, all also for stable

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Merge tag '6.9-rc5-cifs-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:
 "Three smb3 client fixes, all also for stable:

   - two small locking fixes spotted by Coverity

   - FILE_ALL_INFO and network_open_info packing fix"

* tag '6.9-rc5-cifs-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
  smb3: fix lock ordering potential deadlock in cifs_sync_mid_result
  smb3: missing lock when picking channel
  smb: client: Fix struct_group() usage in __packed structs
This commit is contained in:
Linus Torvalds 2024-04-27 11:35:40 -07:00
commit d43df69f38
3 changed files with 9 additions and 4 deletions
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4
fs/smb/client/cifspdu.h
View File

@ -882,7 +882,7 @@ typedef struct smb_com_open_rsp {
__u8 OplockLevel;
__u16 Fid;
__le32 CreateAction;
struct_group(common_attributes,
struct_group_attr(common_attributes, __packed,
__le64 CreationTime;
__le64 LastAccessTime;
__le64 LastWriteTime;
@ -2266,7 +2266,7 @@ typedef struct {
/* QueryFileInfo/QueryPathinfo (also for SetPath/SetFile) data buffer formats */
/******************************************************************************/
typedef struct { /* data block encoding of response to level 263 QPathInfo */
struct_group(common_attributes,
struct_group_attr(common_attributes, __packed,
__le64 CreationTime;
__le64 LastAccessTime;
__le64 LastWriteTime;

2
fs/smb/client/smb2pdu.h
View File

@ -320,7 +320,7 @@ struct smb2_file_reparse_point_info {
} __packed;
struct smb2_file_network_open_info {
struct_group(network_open_info,
struct_group_attr(network_open_info, __packed,
__le64 CreationTime;
__le64 LastAccessTime;
__le64 LastWriteTime;

7
fs/smb/client/transport.c
View File

@ -909,12 +909,15 @@ cifs_sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server)
list_del_init(&mid->qhead);
mid->mid_flags |= MID_DELETED;
}
spin_unlock(&server->mid_lock);
cifs_server_dbg(VFS, "%s: invalid mid state mid=%llu state=%d\n",
__func__, mid->mid, mid->mid_state);
rc = -EIO;
goto sync_mid_done;
}
spin_unlock(&server->mid_lock);
sync_mid_done:
release_mid(mid);
return rc;
}
@ -1057,9 +1060,11 @@ struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses)
index = (uint)atomic_inc_return(&ses->chan_seq);
index %= ses->chan_count;
}
server = ses->chans[index].server;
spin_unlock(&ses->chan_lock);
return ses->chans[index].server;
return server;
}
int