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@xxxxxx> Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx> Cc: Wang Lei <wang840925@xxxxxxxxx> Cc: David Howells <dhowells@xxxxxxxxxx> Cc: stable@xxxxxxxxxx --- fs/cifs/dns_resolve.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/fs/cifs/dns_resolve.c b/fs/cifs/dns_resolve.c index 0eb8702..548f062 100644 --- a/fs/cifs/dns_resolve.c +++ b/fs/cifs/dns_resolve.c @@ -66,7 +66,7 @@ dns_resolve_server_name_to_ip(const char *unc, char **ip_addr) /* Search for server name delimiter */ sep = memchr(hostname, '\\', len); if (sep) - len = sep - unc; + len = sep - hostname; else cFYI(1, "%s: probably server name is whole unc: %s", __func__, unc); -- 1.7.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
