[PATCH 1/1] net: ethernet: ax88796: avoid null pointer dereference

From	Heinrich Schuchardt <xypron.glpk@gmx.de>
Newsgroups	linux.kernel
Subject	[PATCH 1/1] net: ethernet: ax88796: avoid null pointer dereference
Date	2016-07-31 10:10 +0200
Message-ID	<s0TYS-5XL-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Show all headers | View raw

If platform_get_resource fails, mem2 is null.
Do not dereference null.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
 drivers/net/ethernet/8390/ax88796.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/8390/ax88796.c b/drivers/net/ethernet/8390/ax88796.c
index 5698f53..39ca935 100644
--- a/drivers/net/ethernet/8390/ax88796.c
+++ b/drivers/net/ethernet/8390/ax88796.c
@@ -910,7 +910,8 @@ static int ax_probe(struct platform_device *pdev)
 	iounmap(ax->map2);
 
  exit_mem2:
-	release_mem_region(mem2->start, mem2_size);
+	if (mem2)
+		release_mem_region(mem2->start, mem2_size);
 
  exit_mem1:
 	iounmap(ei_local->mem);
-- 
2.8.1

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH 1/1] net: ethernet: ax88796: avoid null pointer dereference Heinrich Schuchardt <xypron.glpk@gmx.de> - 2016-07-31 10:10 +0200
  Re: [PATCH 1/1] net: ethernet: ax88796: avoid null pointer  dereference David Miller <davem@davemloft.net> - 2016-08-01 23:00 +0200

csiph-web