When downloading firmware into the device, the driver fails to check the
return when allocating an skb. When the allocation fails, a BUG can be
generated, as seen in https://bugzilla.redhat.com/show_bug.cgi?id=771656.
Signed-off-by: Larry Finger <[email protected]>
Cc: Stable <[email protected]>
---
Index: wireless-testing-new/drivers/net/wireless/rtlwifi/rtl8192se/fw.c
===================================================================
--- wireless-testing-new.orig/drivers/net/wireless/rtlwifi/rtl8192se/fw.c
+++ wireless-testing-new/drivers/net/wireless/rtlwifi/rtl8192se/fw.c
@@ -196,6 +196,8 @@ static bool _rtl92s_firmware_downloadcod
/* Allocate skb buffer to contain firmware */
/* info and tx descriptor info. */
skb = dev_alloc_skb(frag_length);
+ if (!skb)
+ return false;
skb_reserve(skb, extra_descoffset);
seg_ptr = (u8 *)skb_put(skb, (u32)(frag_length -
extra_descoffset));
@@ -573,6 +575,8 @@ static bool _rtl92s_firmware_set_h2c_cmd
len = _rtl92s_get_h2c_cmdlen(MAX_TRANSMIT_BUFFER_SIZE, 1, &cmd_len);
skb = dev_alloc_skb(len);
+ if (!skb)
+ return false;
cb_desc = (struct rtl_tcb_desc *)(skb->cb);
cb_desc->queue_index = TXCMD_QUEUE;
cb_desc->cmd_or_init = DESC_PACKET_TYPE_NORMAL;