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Subject[PATCH net-next 04/15] qed: prevent possible double-frees of the chains
Date
Zero-initialize chain on qed_chain_free(), so it couldn't be freed
twice and provoke undefined behaviour.

Signed-off-by: Alexander Lobakin <alobakin@marvell.com>
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
---
drivers/net/ethernet/qlogic/qed/qed_chain.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_chain.c b/drivers/net/ethernet/qlogic/qed/qed_chain.c
index 40cc26f7f20b..fd2d985793dc 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_chain.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_chain.c
@@ -90,8 +90,10 @@ void qed_chain_free(struct qed_dev *cdev, struct qed_chain *chain)
qed_chain_free_pbl(cdev, chain);
break;
default:
- break;
+ return;
}
+
+ qed_chain_init_mem(chain, NULL, 0);
}

static int
--
2.25.1
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