cifs: fix parsing of hostname in dfs referrals
authorJeff Layton <jlayton@redhat.com>
Tue, 30 Nov 2010 20:14:48 +0000 (15:14 -0500)
committerSteve French <sfrench@us.ibm.com>
Tue, 30 Nov 2010 20:44:05 +0000 (20:44 +0000)
commitba03864872691c0bb580a7fb47388da337ef4aa2
tree05584dc9061390fedf5caa749a2f7d728324b232
parent476428f8c3bb6679f8f52bf2b935ac40bc9c7358
cifs: fix parsing of hostname in dfs referrals

The DFS referral parsing code does a memchr() call to find the '\\'
delimiter that separates the hostname in the referral UNC from the
sharename. It then uses that value to set the length of the hostname via
pointer subtraction.  Instead of subtracting the start of the hostname
however, it subtracts the start of the UNC, which causes the code to
pass in a hostname length that is 2 bytes too long.

Regression introduced in commit 1a4240f4.

Reported-and-Tested-by: Robbert Kouprie <robbert@exx.nl>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Cc: Wang Lei <wang840925@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Steve French <sfrench@us.ibm.com>
fs/cifs/dns_resolve.c