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enic: change sprintf() to snprintf()

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These are copying data into 16 char arrays.  They all specify that the
first string can't be more than 11 characters but once you add on the
"-rx-" and the NUL character there isn't space for the %d.

The first string is probably never going to be 11 characters, but if it
is then let's truncate the string instead of corrupting memory.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2013-01-17 21:46:18 +00:00 committed by David S. Miller
parent 6b80778d3d
commit 4505f40a6f
1 changed files with 8 additions and 4 deletions
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12
drivers/net/ethernet/cisco/enic/enic_main.c
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@ -1490,7 +1490,8 @@ static int enic_request_intr(struct enic *enic)
for (i = 0; i < enic->rq_count; i++) {
intr = enic_msix_rq_intr(enic, i);
sprintf(enic->msix[intr].devname,
snprintf(enic->msix[intr].devname,
sizeof(enic->msix[intr].devname),
"%.11s-rx-%d", netdev->name, i);
enic->msix[intr].isr = enic_isr_msix_rq;
enic->msix[intr].devid = &enic->napi[i];
@ -1498,20 +1499,23 @@ static int enic_request_intr(struct enic *enic)
for (i = 0; i < enic->wq_count; i++) {
intr = enic_msix_wq_intr(enic, i);
sprintf(enic->msix[intr].devname,
snprintf(enic->msix[intr].devname,
sizeof(enic->msix[intr].devname),
"%.11s-tx-%d", netdev->name, i);
enic->msix[intr].isr = enic_isr_msix_wq;
enic->msix[intr].devid = enic;
}
intr = enic_msix_err_intr(enic);
sprintf(enic->msix[intr].devname,
snprintf(enic->msix[intr].devname,
sizeof(enic->msix[intr].devname),
"%.11s-err", netdev->name);
enic->msix[intr].isr = enic_isr_msix_err;
enic->msix[intr].devid = enic;
intr = enic_msix_notify_intr(enic);
sprintf(enic->msix[intr].devname,
snprintf(enic->msix[intr].devname,
sizeof(enic->msix[intr].devname),
"%.11s-notify", netdev->name);
enic->msix[intr].isr = enic_isr_msix_notify;
enic->msix[intr].devid = enic;