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From: Saeed Mahameed <saeed@kernel.org>
To: "David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org, Maor Gottlieb <maorg@nvidia.com>,
	Mark Bloch <mbloch@nvidia.com>,
	Saeed Mahameed <saeedm@nvidia.com>
Subject: [net 09/19] net/mlx5: Fix possible deadlock on rule deletion
Date: Wed, 23 Feb 2022 09:04:20 -0800	[thread overview]
Message-ID: <20220223170430.295595-10-saeed@kernel.org> (raw)
In-Reply-To: <20220223170430.295595-1-saeed@kernel.org>

From: Maor Gottlieb <maorg@nvidia.com>

Add missing call to up_write_ref_node() which releases the semaphore
in case the FTE doesn't have destinations, such in drop rule case.

Fixes: 465e7baab6d9 ("net/mlx5: Fix deletion of duplicate rules")
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/fs_core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
index b628917e38e4..537c82b9aa53 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
@@ -2074,6 +2074,8 @@ void mlx5_del_flow_rules(struct mlx5_flow_handle *handle)
 		fte->node.del_hw_func = NULL;
 		up_write_ref_node(&fte->node, false);
 		tree_put_node(&fte->node, false);
+	} else {
+		up_write_ref_node(&fte->node, false);
 	}
 	kfree(handle);
 }
-- 
2.35.1


  parent reply	other threads:[~2022-02-23 17:04 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-23 17:04 [pull request][net 00/19] mlx5 fixes 2022-02-23 Saeed Mahameed
2022-02-23 17:04 ` [net 01/19] net/mlx5: Update the list of the PCI supported devices Saeed Mahameed
2022-02-23 17:04 ` [net 02/19] net/mlx5: DR, Cache STE shadow memory Saeed Mahameed
2022-02-23 17:04 ` [net 03/19] net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte Saeed Mahameed
2022-02-23 17:04 ` [net 04/19] net/mlx5: DR, Don't allow match on IP w/o matching on full ethertype/ip_version Saeed Mahameed
2022-02-23 23:26   ` Jakub Kicinski
2022-02-23 23:35     ` Yevgeny Kliteynik
2022-02-23 17:04 ` [net 05/19] net/mlx5: DR, Fix the threshold that defines when pool sync is initiated Saeed Mahameed
2022-02-23 17:04 ` [net 06/19] net/mlx5: Update log_max_qp value to be 17 at most Saeed Mahameed
2022-02-23 17:04 ` [net 07/19] net/mlx5: Fix wrong limitation of metadata match on ecpf Saeed Mahameed
2022-02-23 17:04 ` [net 08/19] net/mlx5: Fix tc max supported prio for nic mode Saeed Mahameed
2022-02-23 17:04 ` Saeed Mahameed [this message]
2022-02-23 17:04 ` [net 10/19] net/mlx5e: Fix wrong return value on ioctl EEPROM query failure Saeed Mahameed
2022-02-23 17:04 ` [net 11/19] net/mlx5e: kTLS, Use CHECKSUM_UNNECESSARY for device-offloaded packets Saeed Mahameed
2022-02-23 17:04 ` [net 12/19] net/mlx5e: TC, Reject rules with drop and modify hdr action Saeed Mahameed
2022-02-23 17:04 ` [net 13/19] net/mlx5e: TC, Reject rules with forward and drop actions Saeed Mahameed
2022-02-23 17:04 ` [net 14/19] net/mlx5e: TC, Skip redundant ct clear actions Saeed Mahameed
2022-02-23 17:04 ` [net 15/19] net/mlx5e: Add feature check for set fec counters Saeed Mahameed
2022-02-23 17:04 ` [net 16/19] net/mlx5e: Fix MPLSoUDP encap to use MPLS action information Saeed Mahameed
2022-02-23 17:04 ` [net 17/19] net/mlx5e: MPLSoUDP decap, fix check for unsupported matches Saeed Mahameed
2022-02-23 17:04 ` [net 18/19] net/mlx5e: Add missing increment of count Saeed Mahameed
2022-02-23 17:04 ` [net 19/19] net/mlx5e: Fix VF min/max rate parameters interchange mistake Saeed Mahameed

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