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oce(4): potential out of bounds access before vector validation

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Submitted by:	Augustin Cavalier <waddlesplash@gmail.com>
Obtained from:	Haiku (ec2b89264cfc63e05e611cce82cc449197403aa4)
MFC after:	3 days
This commit is contained in:
Kyle Evans 2019-08-06 13:09:20 +00:00
parent 12b678e9f2
commit ab7de25c25
1 changed files with 3 additions and 1 deletions
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4
sys/dev/oce/oce_if.c
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@ -836,12 +836,14 @@ oce_fast_isr(void *arg)
static int static int
oce_alloc_intr(POCE_SOFTC sc, int vector, void (*isr) (void *arg, int pending)) oce_alloc_intr(POCE_SOFTC sc, int vector, void (*isr) (void *arg, int pending))
{ {
POCE_INTR_INFO ii = &sc->intrs[vector]; POCE_INTR_INFO ii;
int rc = 0, rr; int rc = 0, rr;
if (vector >= OCE_MAX_EQ) if (vector >= OCE_MAX_EQ)
return (EINVAL); return (EINVAL);
ii = &sc->intrs[vector];
/* Set the resource id for the interrupt. /* Set the resource id for the interrupt.
* MSIx is vector + 1 for the resource id, * MSIx is vector + 1 for the resource id,
* INTx is 0 for the resource id. * INTx is 0 for the resource id.