From: Sebastian Ott <sebott-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
To: Yishai Hadas <yishaih-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
Tariq Toukan <tariqt-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH] net/mlx4_en: fix off by one in error handling
Date: Wed, 14 Sep 2016 13:09:24 +0200 (CEST) [thread overview]
Message-ID: <alpine.LFD.2.20.1609141305360.1727@schleppi> (raw)
If an error occurs in mlx4_init_eq_table the index used in the
err_out_unmap label is one too big which results in a panic in
mlx4_free_eq. This patch fixes the index in the error path.
Signed-off-by: Sebastian Ott <sebott-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
---
drivers/net/ethernet/mellanox/mlx4/eq.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
index f613977..cf8f8a7 100644
--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
@@ -1305,8 +1305,8 @@ int mlx4_init_eq_table(struct mlx4_dev *dev)
return 0;
err_out_unmap:
- while (i >= 0)
- mlx4_free_eq(dev, &priv->eq_table.eq[i--]);
+ while (i > 0)
+ mlx4_free_eq(dev, &priv->eq_table.eq[--i]);
#ifdef CONFIG_RFS_ACCEL
for (i = 1; i <= dev->caps.num_ports; i++) {
if (mlx4_priv(dev)->port[i].rmap) {
--
2.5.5
--
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next reply other threads:[~2016-09-14 11:09 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-14 11:09 Sebastian Ott [this message]
2016-09-14 13:43 ` [PATCH] net/mlx4_en: fix off by one in error handling Tariq Toukan
[not found] ` <df5834ee-00c2-3f18-ae83-8bb06b6c675b-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-09-14 13:53 ` Sebastian Ott
2016-09-14 14:49 ` Tariq Toukan
2016-09-14 16:08 ` Sebastian Ott
2016-09-15 12:18 ` Tariq Toukan
2016-09-16 8:16 ` David Miller
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