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authorJason Gunthorpe <jgg@nvidia.com>2021-11-01 14:49:20 -0300
committerJason Gunthorpe <jgg@nvidia.com>2021-11-01 14:49:20 -0300
commita2a2a69d144d66e0c36697da062b3949e3c2c870 (patch)
tree3849e66b693137506434a1a8f579963c626e33b6 /drivers/infiniband/hw/qib
parentRDMA/irdma: optimize rx path by removing unnecessary copy (diff)
parentLinux 5.15 (diff)
downloadlinux-dev-a2a2a69d144d66e0c36697da062b3949e3c2c870.tar.xz
linux-dev-a2a2a69d144d66e0c36697da062b3949e3c2c870.zip
Merge tag 'v5.15' into rdma.git for-next
Pull in the accepted for-rc patches as the next merge needs a newer base. Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/qib')
-rw-r--r--drivers/infiniband/hw/qib/qib_user_sdma.c33
1 files changed, 23 insertions, 10 deletions
diff --git a/drivers/infiniband/hw/qib/qib_user_sdma.c b/drivers/infiniband/hw/qib/qib_user_sdma.c
index a67599b5a550..ac11943a5ddb 100644
--- a/drivers/infiniband/hw/qib/qib_user_sdma.c
+++ b/drivers/infiniband/hw/qib/qib_user_sdma.c
@@ -602,7 +602,7 @@ done:
/*
* How many pages in this iovec element?
*/
-static int qib_user_sdma_num_pages(const struct iovec *iov)
+static size_t qib_user_sdma_num_pages(const struct iovec *iov)
{
const unsigned long addr = (unsigned long) iov->iov_base;
const unsigned long len = iov->iov_len;
@@ -658,7 +658,7 @@ static void qib_user_sdma_free_pkt_frag(struct device *dev,
static int qib_user_sdma_pin_pages(const struct qib_devdata *dd,
struct qib_user_sdma_queue *pq,
struct qib_user_sdma_pkt *pkt,
- unsigned long addr, int tlen, int npages)
+ unsigned long addr, int tlen, size_t npages)
{
struct page *pages[8];
int i, j;
@@ -722,7 +722,7 @@ static int qib_user_sdma_pin_pkt(const struct qib_devdata *dd,
unsigned long idx;
for (idx = 0; idx < niov; idx++) {
- const int npages = qib_user_sdma_num_pages(iov + idx);
+ const size_t npages = qib_user_sdma_num_pages(iov + idx);
const unsigned long addr = (unsigned long) iov[idx].iov_base;
ret = qib_user_sdma_pin_pages(dd, pq, pkt, addr,
@@ -824,8 +824,8 @@ static int qib_user_sdma_queue_pkts(const struct qib_devdata *dd,
unsigned pktnw;
unsigned pktnwc;
int nfrags = 0;
- int npages = 0;
- int bytes_togo = 0;
+ size_t npages = 0;
+ size_t bytes_togo = 0;
int tiddma = 0;
int cfur;
@@ -885,7 +885,11 @@ static int qib_user_sdma_queue_pkts(const struct qib_devdata *dd,
npages += qib_user_sdma_num_pages(&iov[idx]);
- bytes_togo += slen;
+ if (check_add_overflow(bytes_togo, slen, &bytes_togo) ||
+ bytes_togo > type_max(typeof(pkt->bytes_togo))) {
+ ret = -EINVAL;
+ goto free_pbc;
+ }
pktnwc += slen >> 2;
idx++;
nfrags++;
@@ -904,8 +908,7 @@ static int qib_user_sdma_queue_pkts(const struct qib_devdata *dd,
}
if (frag_size) {
- int tidsmsize, n;
- size_t pktsize;
+ size_t tidsmsize, n, pktsize, sz, addrlimit;
n = npages*((2*PAGE_SIZE/frag_size)+1);
pktsize = struct_size(pkt, addr, n);
@@ -923,14 +926,24 @@ static int qib_user_sdma_queue_pkts(const struct qib_devdata *dd,
else
tidsmsize = 0;
- pkt = kmalloc(pktsize+tidsmsize, GFP_KERNEL);
+ if (check_add_overflow(pktsize, tidsmsize, &sz)) {
+ ret = -EINVAL;
+ goto free_pbc;
+ }
+ pkt = kmalloc(sz, GFP_KERNEL);
if (!pkt) {
ret = -ENOMEM;
goto free_pbc;
}
pkt->largepkt = 1;
pkt->frag_size = frag_size;
- pkt->addrlimit = n + ARRAY_SIZE(pkt->addr);
+ if (check_add_overflow(n, ARRAY_SIZE(pkt->addr),
+ &addrlimit) ||
+ addrlimit > type_max(typeof(pkt->addrlimit))) {
+ ret = -EINVAL;
+ goto free_pbc;
+ }
+ pkt->addrlimit = addrlimit;
if (tiddma) {
char *tidsm = (char *)pkt + pktsize;