[PATCH net v2 1/2] net: mana: initialize gdma queue id to INVALID_QUEUE_ID
From: Aditya Garg <hidden>
Date: 2026-06-08 10:14:04
Also in:
linux-hyperv, lkml
Subsystem:
hyper-v/azure core and drivers, networking drivers, the rest · Maintainers:
"K. Y. Srinivasan", Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted>
Reviewed-by: Dipayaan Roy <redacted>
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 d8e816882f02..ac71ca8450bf 100644
--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c@@ -1192,6 +1192,8 @@ 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