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From: Aditya Garg <gargaditya@linux.microsoft.com>
To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org,
	decui@microsoft.com, longli@microsoft.com, andrew+netdev@lunn.ch,
	davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
	pabeni@redhat.com, horms@kernel.org,
	shradhagupta@linux.microsoft.com, dipayanroy@linux.microsoft.com,
	ernis@linux.microsoft.com, kees@kernel.org,
	shacharr@microsoft.com, stephen@networkplumber.org,
	gargaditya@microsoft.com, gargaditya@linux.microsoft.com,
	ssengar@linux.microsoft.com, linux-hyperv@vger.kernel.org,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH net 1/2] net: mana: initialize gdma queue id to INVALID_QUEUE_ID
Date: Thu,  4 Jun 2026 01:01:25 -0700	[thread overview]
Message-ID: <20260604080137.1995269-2-gargaditya@linux.microsoft.com> (raw)
In-Reply-To: <20260604080137.1995269-1-gargaditya@linux.microsoft.com>

mana_gd_create_mana_wq_cq() leaves queue->id as 0 (from kzalloc_obj())
until mana_create_wq_obj() assigns the firmware-returned id. If creation
fails before that, cleanup calls mana_gd_destroy_cq() with id 0, NULLing
gc->cq_table[0] and silently breaking whichever real CQ owns that slot.

Initialize queue->id to INVALID_QUEUE_ID right after allocation, matching
mana_gd_create_eq(). The existing (id >= max_num_cqs) guard then
short-circuits cleanly.

Fixes: ca9c54d2d6a5 ("net: mana: Add a driver for Microsoft Azure Network Adapter (MANA)")
Signed-off-by: Aditya Garg <gargaditya@linux.microsoft.com>
Reviewed-by: Dipayaan Roy <dipayanroy@linux.microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
---
 drivers/net/ethernet/microsoft/mana/gdma_main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
index 712a0881d720..9d145517c6dc 100644
--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c
@@ -1200,6 +1200,8 @@ int mana_gd_create_mana_wq_cq(struct gdma_dev *gd,
 	if (!queue)
 		return -ENOMEM;
 
+	queue->id = INVALID_QUEUE_ID;
+
 	gmi = &queue->mem_info;
 	err = mana_gd_alloc_memory(gc, spec->queue_size, gmi);
 	if (err) {
-- 
2.43.0


  reply	other threads:[~2026-06-04  8:01 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-04  8:01 [PATCH net 0/2] net: mana: fix error-path issues in queue setup Aditya Garg
2026-06-04  8:01 ` Aditya Garg [this message]
2026-06-04  8:01 ` [PATCH net 2/2] net: mana: guard TX wq object destroy with INVALID_MANA_HANDLE check Aditya Garg
2026-06-05  8:02   ` sashiko-bot
2026-06-06  1:27 ` [PATCH net 0/2] net: mana: fix error-path issues in queue setup Jakub Kicinski
2026-06-08  4:43   ` Aditya Garg

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