samsung-sm8650/android_kernel_samsung_sm8650-modules
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qcacmn: Resolved NULL ptr dereference in detach path

Bläddra i källkod 
On attach , allocation failed and in error handling
path it will call pdev_detach to free the resource,
resolved NULL pointer dereference which was causing
kernel panic.

Change-Id: I0fd5395fc2d4d2040049124094231dfa524a66b7
CRs-Fixed: 2192809
This commit is contained in:
Ruchi, Agrawal
2018-02-23 11:32:24 +05:30
committad av snandini
förälder 5e47d43331
incheckning c729c57e65
1 ändrade filer med 10 tillägg och 5 borttagningar
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15
dp/wifi3.0/dp_tx.c
Visa fil

@@ -3059,22 +3059,27 @@ static void dp_tx_desc_flush(struct dp_pdev *pdev)
uint32_t num_desc;
struct dp_soc *soc = pdev->soc;
struct dp_tx_desc_s *tx_desc = NULL;
struct dp_tx_desc_pool_s *tx_desc_pool = NULL;
num_desc = wlan_cfg_get_num_tx_desc(soc->wlan_cfg_ctx);
num_pool = wlan_cfg_get_num_tx_desc_pool(soc->wlan_cfg_ctx);
for (i = 0; i < num_pool; i++) {
for (j = 0; j < num_desc; j++) {
tx_desc = dp_tx_desc_find(soc, i,
tx_desc_pool = &((soc)->tx_desc[(i)]);
if (tx_desc_pool &&
tx_desc_pool->desc_pages.cacheable_pages) {
tx_desc = dp_tx_desc_find(soc, i,
(j & DP_TX_DESC_ID_PAGE_MASK) >>
DP_TX_DESC_ID_PAGE_OS,
(j & DP_TX_DESC_ID_OFFSET_MASK) >>
DP_TX_DESC_ID_OFFSET_OS);
if (tx_desc && (tx_desc->pdev == pdev) &&
(tx_desc->flags & DP_TX_DESC_FLAG_ALLOCATED)) {
dp_tx_comp_free_buf(soc, tx_desc);
dp_tx_desc_release(tx_desc, i);
if (tx_desc && (tx_desc->pdev == pdev) &&
(tx_desc->flags & DP_TX_DESC_FLAG_ALLOCATED)) {
dp_tx_comp_free_buf(soc, tx_desc);
dp_tx_desc_release(tx_desc, i);
}
}
}
}