lkml.org 
[lkml]   [2021]   [Nov]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.19 287/323] net: bnx2x: fix variable dereferenced before check
Date
From: Pavel Skripkin <paskripkin@gmail.com>

[ Upstream commit f8885ac89ce310570e5391fe0bf0ec9c7c9b4fdc ]

Smatch says:
bnx2x_init_ops.h:640 bnx2x_ilt_client_mem_op()
warn: variable dereferenced before check 'ilt' (see line 638)

Move ilt_cli variable initialization _after_ ilt validation, because
it's unsafe to deref the pointer before validation check.

Fixes: 523224a3b3cd ("bnx2x, cnic, bnx2i: use new FW/HSI")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x_init_ops.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_init_ops.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_init_ops.h
index 1835d2e451c01..fc7fce642666c 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_init_ops.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_init_ops.h
@@ -635,11 +635,13 @@ static int bnx2x_ilt_client_mem_op(struct bnx2x *bp, int cli_num,
{
int i, rc;
struct bnx2x_ilt *ilt = BP_ILT(bp);
- struct ilt_client_info *ilt_cli = &ilt->clients[cli_num];
+ struct ilt_client_info *ilt_cli;

if (!ilt || !ilt->lines)
return -1;

+ ilt_cli = &ilt->clients[cli_num];
+
if (ilt_cli->flags & (ILT_CLIENT_SKIP_INIT | ILT_CLIENT_SKIP_MEM))
return 0;

--
2.33.0


\
 
 \ /
  Last update: 2021-11-24 14:14    [W:0.875 / U:0.204 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site