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authorJoe Eykholt <jeykholt@cisco.com>2009-11-03 11:48:55 -0800
committerJames Bottomley <James.Bottomley@suse.de>2009-12-04 12:01:16 -0600
commit5f9a056db9c7973c46337ec8d034323aa72bf206 (patch)
tree2b61b80ddfcd82fc415856306b791b870e3544d2 /include/scsi
parent6049d95a8a223e2dc3a476dea9f0fbc9b580f38f (diff)
downloadlinux-linaro-android-5f9a056db9c7973c46337ec8d034323aa72bf206.tar.gz
[SCSI] libfc: fix symbolic name registrations smashing skb data
The strncpy for RSPN_ID and RSNN_NN requests was padding past the allocated frame size. Get the string length before filling in the ct header. Signed-off-by: Joe Eykholt <jeykholt@cisco.com> Signed-off-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'include/scsi')
-rw-r--r--include/scsi/fc_encode.h17
1 files changed, 9 insertions, 8 deletions
diff --git a/include/scsi/fc_encode.h b/include/scsi/fc_encode.h
index c8968d31c61..ab2260cb149 100644
--- a/include/scsi/fc_encode.h
+++ b/include/scsi/fc_encode.h
@@ -111,6 +111,7 @@ static inline int fc_ct_fill(struct fc_lport *lport,
enum fc_fh_type *fh_type)
{
struct fc_ct_req *ct;
+ size_t len;
switch (op) {
case FC_NS_GPN_FT:
@@ -138,22 +139,22 @@ static inline int fc_ct_fill(struct fc_lport *lport,
break;
case FC_NS_RSPN_ID:
- ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn));
+ len = strnlen(fc_host_symbolic_name(lport->host), 255);
+ ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rspn) + len);
hton24(ct->payload.spn.fr_fid.fp_fid,
fc_host_port_id(lport->host));
strncpy(ct->payload.spn.fr_name,
- fc_host_symbolic_name(lport->host), 255);
- ct->payload.spn.fr_name_len =
- strnlen(ct->payload.spn.fr_name, 255);
+ fc_host_symbolic_name(lport->host), len);
+ ct->payload.spn.fr_name_len = len;
break;
case FC_NS_RSNN_NN:
- ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn));
+ len = strnlen(fc_host_symbolic_name(lport->host), 255);
+ ct = fc_ct_hdr_fill(fp, op, sizeof(struct fc_ns_rsnn) + len);
put_unaligned_be64(lport->wwnn, &ct->payload.snn.fr_wwn);
strncpy(ct->payload.snn.fr_name,
- fc_host_symbolic_name(lport->host), 255);
- ct->payload.snn.fr_name_len =
- strnlen(ct->payload.snn.fr_name, 255);
+ fc_host_symbolic_name(lport->host), len);
+ ct->payload.snn.fr_name_len = len;
break;
default: