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staging/slicoss: Fix buffer possible overflow in slic_card_locate

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smatch complains about a possible buffer overflow
slicoss.c:3651 slic_card_locate() error: buffer overflow
'physcard->adapter' 4 <= 4

If the for loop is not exited prematurely i++ is executed after the last
iteration and thus i can be 4, which is out of bounds for
physcard->adapter.

-> Add check for this condition and simplify the if statement by
inverting the condition.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Huewe 2013-02-19 05:18:51 +01:00 committed by Greg Kroah-Hartman
parent 6d1b80fd88
commit 20d403e801
1 changed files with 4 additions and 3 deletions
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7
drivers/staging/slicoss/slicoss.c
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@ -3643,11 +3643,12 @@ static u32 slic_card_locate(struct adapter *adapter)
while (physcard) {
for (i = 0; i < SLIC_MAX_PORTS; i++) {
if (!physcard->adapter[i])
continue;
else
if (physcard->adapter[i])
break;
}
if (i == SLIC_MAX_PORTS)
break;
if (physcard->adapter[i]->slotnumber == adapter->slotnumber)
break;
physcard = physcard->next;