netdev - [Patch v5 3/4] bnx2x: Prevent access to a freed page in page

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230811201512.461657-4-thinhtr@linux.vnet.ibm.com>
Date: Fri, 11 Aug 2023 15:15:11 -0500
From: Thinh Tran <thinhtr@...ux.vnet.ibm.com>
To: kuba@...nel.org
Cc: aelior@...vell.com, davem@...emloft.net, edumazet@...gle.com,
        manishc@...vell.com, netdev@...r.kernel.org, pabeni@...hat.com,
        skalluru@...vell.com, VENKATA.SAI.DUGGI@....com,
        Thinh Tran <thinhtr@...ux.vnet.ibm.com>
Subject: [Patch v5 3/4] bnx2x: Prevent access to a freed page in page_pool

Signed-off-by: Thinh Tran <thinhtr@...ux.vnet.ibm.com>
---
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
index 0ad879a5af95..ca3ab06206b3 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
@@ -1016,6 +1016,9 @@ static inline void bnx2x_free_rx_sge_range(struct bnx2x *bp,
 {
 	int i;
 
+	if (!fp->page_pool.page)
+		return;
+
 	if (fp->mode == TPA_MODE_DISABLED)
 		return;
 
-- 
2.27.0