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tests/ncdevmem: Fix double-free of queue array

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netdev_bind_rx takes ownership of the queue array passed as parameter
and frees it, so a queue array buffer cannot be reused across multiple
netdev_bind_rx calls.

This commit fixes that by always passing in a newly created queue array
to all netdev_bind_rx calls in ncdevmem.

Fixes: 85585b4bc8 ("selftests: add ncdevmem, netcat for devmem TCP")
Signed-off-by: Cosmin Ratiu <cratiu@nvidia.com>
Acked-by: Stanislav Fomichev <sdf@fomichev.me>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Link: https://patch.msgid.link/20250508084434.1933069-1-cratiu@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Cosmin Ratiu 2025-05-08 11:44:34 +03:00 committed by Jakub Kicinski
parent f11cf946c0
commit 97c4e094a4
1 changed files with 22 additions and 33 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

55
tools/testing/selftests/drivers/net/hw/ncdevmem.c
View file

@ -431,6 +431,22 @@ static int parse_address(const char *str, int port, struct sockaddr_in6 *sin6)
return 0;
}
static struct netdev_queue_id *create_queues(void)
{
struct netdev_queue_id *queues;
size_t i = 0;
queues = calloc(num_queues, sizeof(*queues));
for (i = 0; i < num_queues; i++) {
queues[i]._present.type = 1;
queues[i]._present.id = 1;
queues[i].type = NETDEV_QUEUE_TYPE_RX;
queues[i].id = start_queue + i;
}
return queues;
}
int do_server(struct memory_buffer *mem)
{
char ctrl_data[sizeof(int) * 20000];
@ -448,7 +464,6 @@ int do_server(struct memory_buffer *mem)
char buffer[256];
int socket_fd;
int client_fd;
size_t i = 0;
int ret;
ret = parse_address(server_ip, atoi(port), &server_sin);
@ -471,16 +486,7 @@ int do_server(struct memory_buffer *mem)
sleep(1);
queues = malloc(sizeof(*queues) * num_queues);
for (i = 0; i < num_queues; i++) {
queues[i]._present.type = 1;
queues[i]._present.id = 1;
queues[i].type = NETDEV_QUEUE_TYPE_RX;
queues[i].id = start_queue + i;
}
if (bind_rx_queue(ifindex, mem->fd, queues, num_queues, &ys))
if (bind_rx_queue(ifindex, mem->fd, create_queues(), num_queues, &ys))
error(1, 0, "Failed to bind\n");
tmp_mem = malloc(mem->size);
@ -545,7 +551,6 @@ int do_server(struct memory_buffer *mem)
goto cleanup;
}
i++;
for (cm = CMSG_FIRSTHDR(&msg); cm; cm = CMSG_NXTHDR(&msg, cm)) {
if (cm->cmsg_level != SOL_SOCKET ||
(cm->cmsg_type != SCM_DEVMEM_DMABUF &&
@ -630,10 +635,8 @@ int do_server(struct memory_buffer *mem)
void run_devmem_tests(void)
{
struct netdev_queue_id *queues;
struct memory_buffer *mem;
struct ynl_sock *ys;
size_t i = 0;
mem = provider->alloc(getpagesize() * NUM_PAGES);
@ -641,38 +644,24 @@ void run_devmem_tests(void)
if (configure_rss())
error(1, 0, "rss error\n");
queues = calloc(num_queues, sizeof(*queues));
if (configure_headersplit(1))
error(1, 0, "Failed to configure header split\n");
if (!bind_rx_queue(ifindex, mem->fd, queues, num_queues, &ys))
if (!bind_rx_queue(ifindex, mem->fd,
calloc(num_queues, sizeof(struct netdev_queue_id)),
num_queues, &ys))
error(1, 0, "Binding empty queues array should have failed\n");
for (i = 0; i < num_queues; i++) {
queues[i]._present.type = 1;
queues[i]._present.id = 1;
queues[i].type = NETDEV_QUEUE_TYPE_RX;
queues[i].id = start_queue + i;
}
if (configure_headersplit(0))
error(1, 0, "Failed to configure header split\n");
if (!bind_rx_queue(ifindex, mem->fd, queues, num_queues, &ys))
if (!bind_rx_queue(ifindex, mem->fd, create_queues(), num_queues, &ys))
error(1, 0, "Configure dmabuf with header split off should have failed\n");
if (configure_headersplit(1))
error(1, 0, "Failed to configure header split\n");
for (i = 0; i < num_queues; i++) {
queues[i]._present.type = 1;
queues[i]._present.id = 1;
queues[i].type = NETDEV_QUEUE_TYPE_RX;
queues[i].id = start_queue + i;
}
if (bind_rx_queue(ifindex, mem->fd, queues, num_queues, &ys))
if (bind_rx_queue(ifindex, mem->fd, create_queues(), num_queues, &ys))
error(1, 0, "Failed to bind\n");
/* Deactivating a bound queue should not be legal */