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* [PATCH]about eicon: array subscript is above array bounds
@ 2009-12-10  4:04 Jerry Leo
  2009-12-10 14:49 ` Karsten Keil
  0 siblings, 1 reply; 4+ messages in thread
From: Jerry Leo @ 2009-12-10  4:04 UTC (permalink / raw)
  To: isdn; +Cc: linux-kernel, isdn4linux, i4ldeveloper

[-- Attachment #1: Type: text/plain, Size: 3595 bytes --]

Hi, Karsten Keil,

        When i compile eicon,there have some waning look like this:

           CC [M]  drivers/isdn/hardware/eicon/message.o
drivers/isdn/hardware/eicon/message.c: In function ‘add_b23’:
drivers/isdn/hardware/eicon/message.c:8426: warning: array subscript
is above array bounds
drivers/isdn/hardware/eicon/message.c:8427: warning: array subscript
is above array bounds
drivers/isdn/hardware/eicon/message.c:8434: warning: array subscript
is above array bounds
drivers/isdn/hardware/eicon/message.c:8435: warning: array subscript
is above array bounds
drivers/isdn/hardware/eicon/message.c:8436: warning: array subscript
is above array bounds
drivers/isdn/hardware/eicon/message.c:8447: warning: array subscript
is above array bounds

I think the array is short then be used,because the array's max length
is 20, then it will use long than this, the code is in
"drivers/isdn/hardware/eicon/divacapi.h" 1360L, 50994C  :


#define T30_MAX_STATION_ID_LENGTH       20
#define T30_MAX_SUBADDRESS_LENGTH       20
#define T30_MAX_PASSWORD_LENGTH         20

typedef struct t30_info_s T30_INFO;
struct t30_info_s {
  byte          code;
  byte          rate_div_2400;
  byte          resolution;
  byte          data_format;
  byte          pages_low;
  byte          pages_high;
  byte          operating_mode;
  byte          control_bits_low;
  byte          control_bits_high;
  byte          feature_bits_low;
  byte          feature_bits_high;
  byte          recording_properties;
  byte          universal_6;
  byte          universal_7;
  byte          station_id_len;
  byte          head_line_len;
  byte          station_id[T30_MAX_STATION_ID_LENGTH];
/* byte          head_line[];      */
/* byte          sub_sep_length;   */
/* byte          sub_sep_field[];  */
/* byte          pwd_length;       */
/* byte          pwd_field[];      */
/* byte          nsf_info_length;   */
/* byte          nsf_info_field[];  */
};

"drivers/isdn/hardware/eicon/message.c" 15071L, 487328C

        if (pos != 0)
        {
          if (CAPI_MAX_DATE_TIME_LENGTH + 2 +
b3_config_parms[3].length > CAPI_MAX_HEAD_LINE_SPACE)
            pos = 0;
          else
          {
            ((T30_INFO *)&nlc[1])->station_id[20 + pos++] = ' ';
            ((T30_INFO *)&nlc[1])->station_id[20 + pos++] = ' ';
            len = (byte)b3_config_parms[2].length;
            if (len > 20)
              len = 20;
            if (CAPI_MAX_DATE_TIME_LENGTH + 2 + len + 2 +
b3_config_parms[3].length <= CAPI_MAX_HEAD_LINE_SPACE)
            {
              for (i = 0; i < len; i++)
                ((T30_INFO *)&nlc[1])->station_id[20 + pos++] = ((byte
  *)b3_config_parms[2].info)[1+i];
              ((T30_INFO *)&nlc[1])->station_id[20 + pos++] = ' ';
              ((T30_INFO *)&nlc[1])->station_id[20 + pos++] = ' ';
            }
          }
        }



can this patch commit?


diff -up linux-2.6/drivers/isdn/hardware/eicon/divacapi.h
linux-2.6/drivers/isdn/hardware/eicon/divacapi.h.orig
--- linux-2.6/drivers/isdn/hardware/eicon/divacapi.h	2009-12-10
12:02:46.000000000 +0800
+++ linux-2.6/drivers/isdn/hardware/eicon/divacapi.h.orig	2009-12-10
11:04:07.000000000 +0800
@@ -445,7 +445,7 @@ struct _DIVA_CAPI_ADAPTER {
 #define CAPI_MAX_HEAD_LINE_SPACE        89
 #define CAPI_MAX_DATE_TIME_LENGTH       18

-#define T30_MAX_STATION_ID_LENGTH       30
+#define T30_MAX_STATION_ID_LENGTH       20
 #define T30_MAX_SUBADDRESS_LENGTH       20
 #define T30_MAX_PASSWORD_LENGTH         20

[-- Attachment #2: patch --]
[-- Type: application/octet-stream, Size: 499 bytes --]

--- linux-2.6/drivers/isdn/hardware/eicon/divacapi.h.orig	2009-12-10 11:04:07.000000000 +0800
+++ linux-2.6/drivers/isdn/hardware/eicon/divacapi.h	2009-12-10 11:04:36.000000000 +0800
@@ -445,7 +445,7 @@ struct _DIVA_CAPI_ADAPTER {
 #define CAPI_MAX_HEAD_LINE_SPACE        89
 #define CAPI_MAX_DATE_TIME_LENGTH       18
 
-#define T30_MAX_STATION_ID_LENGTH       20
+#define T30_MAX_STATION_ID_LENGTH       30
 #define T30_MAX_SUBADDRESS_LENGTH       20
 #define T30_MAX_PASSWORD_LENGTH         20
 

^ permalink raw reply	[flat|nested] 4+ messages in thread
* [PATCH]about eicon: array subscript is above array bounds
@ 2009-12-10  5:46 Jerry Leo
  0 siblings, 0 replies; 4+ messages in thread
From: Jerry Leo @ 2009-12-10  5:46 UTC (permalink / raw)
  To: isdn; +Cc: linux-kernel, isdn4linux, i4ldeveloper

Hi, Karsten Keil,

       When i compile eicon,there have some waning look like this:

          CC [M]  drivers/isdn/hardware/eicon/message.o
drivers/isdn/hardware/eicon/message.c: In function ‘add_b23’:
drivers/isdn/hardware/eicon/message.c:8426: warning: array subscript
is above array bounds
drivers/isdn/hardware/eicon/message.c:8427: warning: array subscript
is above array bounds
drivers/isdn/hardware/eicon/message.c:8434: warning: array subscript
is above array bounds
drivers/isdn/hardware/eicon/message.c:8435: warning: array subscript
is above array bounds
drivers/isdn/hardware/eicon/message.c:8436: warning: array subscript
is above array bounds
drivers/isdn/hardware/eicon/message.c:8447: warning: array subscript
is above array bounds

I think the array is short then be used,because the array's max length
is 20, then it will use long than this, the code is in
"drivers/isdn/hardware/eicon/divacapi.h" 1360L, 50994C  :


#define T30_MAX_STATION_ID_LENGTH       20
#define T30_MAX_SUBADDRESS_LENGTH       20
#define T30_MAX_PASSWORD_LENGTH         20

typedef struct t30_info_s T30_INFO;
struct t30_info_s {
 byte          code;
 byte          rate_div_2400;
 byte          resolution;
 byte          data_format;
 byte          pages_low;
 byte          pages_high;
 byte          operating_mode;
 byte          control_bits_low;
 byte          control_bits_high;
 byte          feature_bits_low;
 byte          feature_bits_high;
 byte          recording_properties;
 byte          universal_6;
 byte          universal_7;
 byte          station_id_len;
 byte          head_line_len;
 byte          station_id[T30_MAX_STATION_ID_LENGTH];
/* byte          head_line[];      */
/* byte          sub_sep_length;   */
/* byte          sub_sep_field[];  */
/* byte          pwd_length;       */
/* byte          pwd_field[];      */
/* byte          nsf_info_length;   */
/* byte          nsf_info_field[];  */
};

"drivers/isdn/hardware/eicon/message.c" 15071L, 487328C

       if (pos != 0)
       {
         if (CAPI_MAX_DATE_TIME_LENGTH + 2 +
b3_config_parms[3].length > CAPI_MAX_HEAD_LINE_SPACE)
           pos = 0;
         else
         {
           ((T30_INFO *)&nlc[1])->station_id[20 + pos++] = ' ';
           ((T30_INFO *)&nlc[1])->station_id[20 + pos++] = ' ';
           len = (byte)b3_config_parms[2].length;
           if (len > 20)
             len = 20;
           if (CAPI_MAX_DATE_TIME_LENGTH + 2 + len + 2 +
b3_config_parms[3].length <= CAPI_MAX_HEAD_LINE_SPACE)
           {
             for (i = 0; i < len; i++)
               ((T30_INFO *)&nlc[1])->station_id[20 + pos++] = ((byte
 *)b3_config_parms[2].info)[1+i];
             ((T30_INFO *)&nlc[1])->station_id[20 + pos++] = ' ';
             ((T30_INFO *)&nlc[1])->station_id[20 + pos++] = ' ';
           }
         }
       }



can this patch commit?

diff --git a/linux-2.6/drivers/isdn/hardware/eicon/divacapi.h
b/linux-2.6/drivers/isdn/hardware/eicon/divacapi.h.orig
index d9462f7..9f5b680 100644
--- a/linux-2.6/drivers/isdn/hardware/eicon/divacapi.h
+++ b/linux-2.6/drivers/isdn/hardware/eicon/divacapi.h.orig
@@ -445,7 +445,7 @@ struct _DIVA_CAPI_ADAPTER {
 #define CAPI_MAX_HEAD_LINE_SPACE        89
 #define CAPI_MAX_DATE_TIME_LENGTH       18

-#define T30_MAX_STATION_ID_LENGTH       30
+#define T30_MAX_STATION_ID_LENGTH       20
 #define T30_MAX_SUBADDRESS_LENGTH       20
 #define T30_MAX_PASSWORD_LENGTH         20



                                      Jerry Leo

^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2009-12-11  1:31 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2009-12-10  4:04 [PATCH]about eicon: array subscript is above array bounds Jerry Leo
2009-12-10 14:49 ` Karsten Keil
2009-12-11  1:31   ` Jerry Leo
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2009-12-10  5:46 Jerry Leo

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