s390/qeth: check size of required HW header cache object (55494264) · Commits · 戴 / test

drivers/s390/net/qeth_core_main.c

+9 −2

Original line number	Diff line number	Diff line
		@@ -16,6 +16,7 @@
		#include <linux/string.h>
		#include <linux/errno.h>
		#include <linux/kernel.h>
		#include <linux/log2.h>
		#include <linux/ip.h>
		#include <linux/tcp.h>
		#include <linux/mii.h>
		@@ -3844,6 +3845,8 @@ int qeth_hdr_chk_and_bounce(struct sk_buff skb, struct qeth_hdr *hdr, int len)
		}
		EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);

		#define QETH_HDR_CACHE_OBJ_SIZE (sizeof(struct qeth_hdr) + ETH_HLEN)

		/**
		* qeth_add_hw_header() - add a HW header to an skb.
		* @skb: skb that the HW header should be added to.
		@@ -3918,6 +3921,8 @@ check_layout:
		return hdr_len;
		}
		/* fall back */
		if (hdr_len + proto_len > QETH_HDR_CACHE_OBJ_SIZE)
		return -E2BIG;
		*hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
		if (!*hdr)
		return -ENOMEM;
		@@ -6661,8 +6666,10 @@ static int __init qeth_core_init(void)
		rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
		if (rc)
		goto register_err;
		qeth_core_header_cache = kmem_cache_create("qeth_hdr",
		sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
		qeth_core_header_cache =
		kmem_cache_create("qeth_hdr", QETH_HDR_CACHE_OBJ_SIZE,
		roundup_pow_of_two(QETH_HDR_CACHE_OBJ_SIZE),
		0, NULL);
		if (!qeth_core_header_cache) {
		rc = -ENOMEM;
		goto slab_err;