OrgACRN
/
acrn-kernel
mirror of https://github.com/projectacrn/acrn-kernel.git
1
0
Fork 0
Code Issues Releases Wiki Activity

bnxt: make sure we return pages to the pool 

[ Upstream commit 97f5e03a4a ]

Before the commit under Fixes the page would have been released
from the pool before the napi_alloc_skb() call, so normal page
freeing was fine (released page == no longer in the pool).

After the change we just mark the page for recycling so it's still
in the pool if the skb alloc fails, we need to recycle.

Same commit added the same bug in the new bnxt_rx_multi_page_skb().

Fixes: 1dc4c557bf ("bnxt: adding bnxt_xdp_build_skb to build skb from multibuffer xdp_buff")
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Link: https://lore.kernel.org/r/20230111042547.987749-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jakub Kicinski 2023-01-10 20:25:47 -08:00 committed by Greg Kroah-Hartman
parent 4fe577ad7b
commit de76fc134f
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/broadcom/bnxt/bnxt.c
View File

@ -990,7 +990,7 @@ static struct sk_buff *bnxt_rx_multi_page_skb(struct bnxt *bp,
DMA_ATTR_WEAK_ORDERING);
skb = build_skb(page_address(page), PAGE_SIZE);
if (!skb) {
__free_page(page);
page_pool_recycle_direct(rxr->page_pool, page);
return NULL;
}
skb_mark_for_recycle(skb);
@ -1028,7 +1028,7 @@ static struct sk_buff *bnxt_rx_page_skb(struct bnxt *bp,
skb = napi_alloc_skb(&rxr->bnapi->napi, payload);
if (!skb) {
__free_page(page);
page_pool_recycle_direct(rxr->page_pool, page);
return NULL;
}