netdev - [PATCH net RESEND] net/mlx5: Fix check for allocation failure in comp_irqs_request

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>] [day] [month] [year] [list]

Date: Fri, 19 May 2023 22:43:03 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Eli Cohen <elic@...dia.com>
Cc: Leon Romanovsky <leon@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Jacob Keller <jacob.e.keller@...el.com>,
	Shay Drory <shayd@...dia.com>, netdev@...r.kernel.org,
	linux-rdma@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH net RESEND] net/mlx5: Fix check for allocation failure in
 comp_irqs_request_pci()

This function accidentally dereferences "cpus" instead of returning
directly.

Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/r/202305200354.KV3jU94w-lkp@intel.com/
Fixes: b48a0f72bc3e ("net/mlx5: Refactor completion irq request/release code")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
Reviewed-by: Simon Horman <simon.horman@...igine.com>
Reviewed-by: Leon Romanovsky <leonro@...dia.com>
---
I sent this earlier, but it wasn't applied and the kbuild caught it.
https://lore.kernel.org/all/6652003b-e89c-4011-9e7d-a730a50bcfce@kili.mountain/

 drivers/net/ethernet/mellanox/mlx5/core/eq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eq.c b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
index eb41f0abf798..13491246c9e9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eq.c
@@ -824,7 +824,7 @@ static int comp_irqs_request_pci(struct mlx5_core_dev *dev)
 	ncomp_eqs = table->num_comp_eqs;
 	cpus = kcalloc(ncomp_eqs, sizeof(*cpus), GFP_KERNEL);
 	if (!cpus)
-		ret = -ENOMEM;
+		return -ENOMEM;
 
 	i = 0;
 	rcu_read_lock();
-- 
2.39.1