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Commit 12f1d7e4 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6 

Pull cifs fixes from Steve French:
 "Various small CIFS/SMB3 fixes for stable:

  Fixes address oops that can occur when accessing Macs with SMB3, and
  another problem found to Samba when read responses queued (e.g. with
  gluster under Samba)"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  CIFS: Fix duplicate line introduced by clone_file_range patch
  Fix cifs_uniqueid_to_ino_t() function for s390x
  CIFS: Fix SMB2+ interim response processing for read requests
  cifs: fix out-of-bounds access in lease parsing
parents 39680f50 9589995e

fs/cifs/cifsfs.c

+0 −1
Original line number Diff line number Diff line
@@ -1013,7 +1013,6 @@ const struct file_operations cifs_file_strict_ops = { 
	.llseek = cifs_llseek,

	.unlocked_ioctl	= cifs_ioctl,

	.clone_file_range = cifs_clone_file_range,

	.clone_file_range = cifs_clone_file_range,

	.setlease = cifs_setlease,

	.fallocate = cifs_fallocate,

};

fs/cifs/cifsfs.h

+4 −8
Original line number Diff line number Diff line
@@ -31,19 +31,15 @@ 
 * so that it will fit. We use hash_64 to convert the value to 31 bits, and

 * then add 1, to ensure that we don't end up with a 0 as the value.

 */

#if BITS_PER_LONG == 64

static inline ino_t

cifs_uniqueid_to_ino_t(u64 fileid)

{

	return (ino_t)fileid;

}

#else

static inline ino_t

cifs_uniqueid_to_ino_t(u64 fileid)

{

	if ((sizeof(ino_t)) < (sizeof(u64)))

		return (ino_t)hash_64(fileid, (sizeof(ino_t) * 8) - 1) + 1;



	return (ino_t)fileid;



}

#endif



extern struct file_system_type cifs_fs_type;

extern const struct address_space_operations cifs_addr_ops;

fs/cifs/cifssmb.c

+18 −3
Original line number Diff line number Diff line
@@ -1396,11 +1396,10 @@ CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock, 
 * current bigbuf.

 */

static int

cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)

discard_remaining_data(struct TCP_Server_Info *server)

{

	unsigned int rfclen = get_rfc1002_length(server->smallbuf);

	int remaining = rfclen + 4 - server->total_read;

	struct cifs_readdata *rdata = mid->callback_data;



	while (remaining > 0) {

		int length;
@@ -1414,10 +1413,20 @@ cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid) 
		remaining -= length;

	}



	dequeue_mid(mid, rdata->result);

	return 0;

}



static int

cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)

{

	int length;

	struct cifs_readdata *rdata = mid->callback_data;



	length = discard_remaining_data(server);

	dequeue_mid(mid, rdata->result);

	return length;

}



int

cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)

{
@@ -1446,6 +1455,12 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid) 
		return length;

	server->total_read += length;



	if (server->ops->is_status_pending &&

	    server->ops->is_status_pending(buf, server, 0)) {

		discard_remaining_data(server);

		return -1;

	}



	/* Was the SMB read successful? */

	rdata->result = server->ops->map_error(buf, false);

	if (rdata->result != 0) {

fs/cifs/smb2pdu.c

+14 −10
Original line number Diff line number Diff line
@@ -1106,21 +1106,25 @@ parse_lease_state(struct TCP_Server_Info *server, struct smb2_create_rsp *rsp, 
{

	char *data_offset;

	struct create_context *cc;

	unsigned int next = 0;

	unsigned int next;

	unsigned int remaining;

	char *name;



	data_offset = (char *)rsp + 4 + le32_to_cpu(rsp->CreateContextsOffset);

	remaining = le32_to_cpu(rsp->CreateContextsLength);

	cc = (struct create_context *)data_offset;

	do {

		cc = (struct create_context *)((char *)cc + next);

	while (remaining >= sizeof(struct create_context)) {

		name = le16_to_cpu(cc->NameOffset) + (char *)cc;

		if (le16_to_cpu(cc->NameLength) != 4 ||

		    strncmp(name, "RqLs", 4)) {

		if (le16_to_cpu(cc->NameLength) == 4 &&

		    strncmp(name, "RqLs", 4) == 0)

			return server->ops->parse_lease_buf(cc, epoch);



		next = le32_to_cpu(cc->Next);

			continue;

		if (!next)

			break;

		remaining -= next;

		cc = (struct create_context *)((char *)cc + next);

	}

		return server->ops->parse_lease_buf(cc, epoch);

	} while (next != 0);



	return 0;

}