Showing error 1816

User: Jiri Slaby
Error type: Invalid Pointer Dereference
Error type description: A pointer which is invalid is being dereferenced
File location: drivers/message/fusion/mptscsih.c
Line in file: 1227
Project: Linux Kernel
Project version: 2.6.28
Tools: Smatch (1.59)
Entered: 2013-09-11 08:47:26 UTC

Source: 

1197
1198#endif
1199
1200/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1201/**
1202 *        mptscsih_info - Return information about MPT adapter
1203 *        @SChost: Pointer to Scsi_Host structure
1204 *
1205 *        (linux scsi_host_template.info routine)
1206 *
1207 *        Returns pointer to buffer where information was written.
1208 */
1209const char *
1210mptscsih_info(struct Scsi_Host *SChost)
1211{
1212        MPT_SCSI_HOST *h;
1213        int size = 0;
1214
1215        h = shost_priv(SChost);
1216
1217        if (h) {
1218                if (h->info_kbuf == NULL)
1219                        if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL)
1220                                return h->info_kbuf;
1221                h->info_kbuf[0] = '\0';
1222
1223                mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0);
1224                h->info_kbuf[size-1] = '\0';
1225        }
1226
1227        return h->info_kbuf;
1228}
1229
1230struct info_str {
1231        char *buffer;
1232        int   length;
1233        int   offset;
1234        int   pos;
1235};
1236
1237static void
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