[PATCH net] net/mana: Null service_wq on setup error to prevent double destroy
From: Konstantin Taranov <hidden>
Date: 2026-03-09 17:24:43
Also in:
linux-rdma, 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
From: Shiraz Saleem <redacted>
In mana_gd_setup() error path, set gc->service_wq to NULL after
destroy_workqueue() to match the cleanup in mana_gd_cleanup().
This prevents a use-after-free if the workqueue pointer is checked
after a failed setup.
Fixes: f975a0955276 ("net: mana: Fix double destroy_workqueue on service rescan PCI path")
Signed-off-by: Shiraz Saleem <redacted>
Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
---
drivers/net/ethernet/microsoft/mana/gdma_main.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
index 0055c23..e879344 100644
--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c@@ -1934,6 +1934,7 @@ remove_irq: mana_gd_remove_irqs(pdev); free_workqueue: destroy_workqueue(gc->service_wq); + gc->service_wq = NULL; dev_err(&pdev->dev, "%s failed (error %d)\n", __func__, err); return err; }
--
2.43.0