From: Dipayaan Roy <dipayanroy@linux.microsoft.com>
To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org,
decui@microsoft.com, andrew+netdev@lunn.ch, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
leon@kernel.org, longli@microsoft.com, kotaranov@microsoft.com,
horms@kernel.org, shradhagupta@linux.microsoft.com,
ssengar@linux.microsoft.com, ernis@linux.microsoft.com,
shirazsaleem@microsoft.com, linux-hyperv@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-rdma@vger.kernel.org, stephen@networkplumber.org,
jacob.e.keller@intel.com, dipayanroy@microsoft.com,
leitao@debian.org, kees@kernel.org, john.fastabend@gmail.com,
hawk@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net,
ast@kernel.org, sdf@fomichev.me, yury.norov@gmail.com
Subject: [PATCH 2/3] net: mana: Skip WQ object destruction for uninitialized RXQ
Date: Wed, 29 Apr 2026 20:57:53 -0700 [thread overview]
Message-ID: <20260430035935.1859220-3-dipayanroy@linux.microsoft.com> (raw)
In-Reply-To: <20260430035935.1859220-1-dipayanroy@linux.microsoft.com>
In mana_destroy_rxq(), mana_destroy_wq_obj() is called unconditionally
even when the WQ object was never created (rxobj is still
INVALID_MANA_HANDLE). When mana_create_rxq() fails before
mana_create_wq_obj() succeeds, the error path calls mana_destroy_rxq()
which sends a bogus destroy command to the hardware:
mana 7870:00:00.0: HWC: Failed hw_channel req: 0x1d
mana 7870:00:00.0: Failed to send mana message: -71, 0x1d
mana 7870:00:00.0 eth7: Failed to destroy WQ object: -71
Guard mana_destroy_wq_obj() with an INVALID_MANA_HANDLE check so that
mana_destroy_rxq() is safe to call at any stage of RXQ initialization.
Fixes: ca9c54d2d6a5 ("net: mana: Add a driver for Microsoft Azure Network Adapter (MANA)")
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Dipayaan Roy <dipayanroy@linux.microsoft.com>
---
drivers/net/ethernet/microsoft/mana/mana_en.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c
index dfb4ba9f7664..f2a6ea162dc3 100644
--- a/drivers/net/ethernet/microsoft/mana/mana_en.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_en.c
@@ -2524,7 +2524,8 @@ static void mana_destroy_rxq(struct mana_port_context *apc,
if (xdp_rxq_info_is_reg(&rxq->xdp_rxq))
xdp_rxq_info_unreg(&rxq->xdp_rxq);
- mana_destroy_wq_obj(apc, GDMA_RQ, rxq->rxobj);
+ if (rxq->rxobj != INVALID_MANA_HANDLE)
+ mana_destroy_wq_obj(apc, GDMA_RQ, rxq->rxobj);
mana_deinit_cq(apc, &rxq->rx_cq);
--
2.43.0
next prev parent reply other threads:[~2026-04-30 4:01 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-30 3:57 [PATCH 0/3] net: mana: Fix mana_destroy_rxq() cleanup for partial RXQ init Dipayaan Roy
2026-04-30 3:57 ` [PATCH 1/3] net: mana: check xdp_rxq registration before unreg in mana_destroy_rxq() Dipayaan Roy
2026-04-30 3:57 ` Dipayaan Roy [this message]
2026-04-30 3:57 ` [PATCH 3/3] net: mana: remove double CQ cleanup in mana_create_rxq error path Dipayaan Roy
2026-04-30 4:14 ` Aditya Garg
2026-05-02 16:52 ` [PATCH 0/3] net: mana: Fix mana_destroy_rxq() cleanup for partial RXQ init Simon Horman
2026-05-03 3:38 ` Dipayaan Roy
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