Hello Patrick Boettcher,
The patch 173a64cb3fcf: "[media] dib8000: enhancement" from Apr 22, 2013, leads
to the following
static checker warning: "drivers/media/dvb-frontends/dib8000.c:2074
dib8000_get_init_prbs()
error: buffer overflow 'lut_prbs_8k' 14 <= 14"
drivers/media/dvb-frontends/dib8000.c
3176 case CT_DEMOD_STEP_11: /* 41 : init prbs autosearch */
3177 if (state->subchannel <= 41) {
^^^^^^^^^^^^^^^^^^^^^^^
3178 dib8000_set_subchannel_prbs(state,
dib8000_get_init_prbs(state, state->subchannel));
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
If state->subchannel == 41 then we go one space beyond the end of the
arrays in dib8000_get_init_prbs(). "41 / 3 + 1" is 14 and there are
only 14 elements in the arrays so we are reading one space beyond the
end of the array.
3179 *tune_state = CT_DEMOD_STEP_9;
3180 } else {
3181 *tune_state = CT_DEMOD_STOP;
3182 state->status = FE_STATUS_TUNE_FAILED;
3183 }
3184 break;
3185
regards,
dan carpenter
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