[PATCH net] pds_core: check for workqueue allocation failure
From: Nikhil P. Rao <hidden>
Date: 2026-07-14 21:27:49
Subsystem:
amd pds core driver, networking drivers, the rest · Maintainers:
Brett Creeley, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
pdsc_init_pf() does not check whether create_singlethread_workqueue()
succeeded.
Fail probe on failure. The workqueue is set up before the timer and
mutexes, so its failure path must unwind only the earlier setup.
Fixes: c2dbb0904310 ("pds_core: health timer and workqueue")
Reported-by: sashiko-bot <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/20260629200358.2626129-1-nikhil.rao%40amd.com?part=2
Signed-off-by: Nikhil P. Rao <redacted>
Reviewed-by: Brett Creeley <brett.creeley@amd.com>
---
drivers/net/ethernet/amd/pds_core/main.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/amd/pds_core/main.c b/drivers/net/ethernet/amd/pds_core/main.c
index 22db78343eb0..f37e5fefa264 100644
--- a/drivers/net/ethernet/amd/pds_core/main.c
+++ b/drivers/net/ethernet/amd/pds_core/main.c@@ -238,6 +238,10 @@ static int pdsc_init_pf(struct pdsc *pdsc) /* General workqueue and timer, but don't start timer yet */ snprintf(wq_name, sizeof(wq_name), "%s.%d", PDS_CORE_DRV_NAME, pdsc->uid); pdsc->wq = create_singlethread_workqueue(wq_name); + if (!pdsc->wq) { + err = -ENOMEM; + goto err_out_unmap_bars; + } INIT_WORK(&pdsc->health_work, pdsc_health_thread); INIT_WORK(&pdsc->pci_reset_work, pdsc_pci_reset_thread); timer_setup(&pdsc->wdtimer, pdsc_wdtimer_cb, 0);
@@ -253,7 +257,7 @@ static int pdsc_init_pf(struct pdsc *pdsc) err = pdsc_setup(pdsc, PDSC_SETUP_INIT); if (err) { mutex_unlock(&pdsc->config_lock); - goto err_out_unmap_bars; + goto err_out_shutdown_timer; } err = pdsc_start(pdsc);
@@ -305,13 +309,14 @@ static int pdsc_init_pf(struct pdsc *pdsc) pdsc_stop(pdsc); err_out_teardown: pdsc_teardown(pdsc, PDSC_TEARDOWN_REMOVING); -err_out_unmap_bars: +err_out_shutdown_timer: timer_shutdown_sync(&pdsc->wdtimer); if (pdsc->wq) destroy_workqueue(pdsc->wq); mutex_destroy(&pdsc->config_lock); mutex_destroy(&pdsc->devcmd_lock); pci_free_irq_vectors(pdsc->pdev); +err_out_unmap_bars: pdsc_unmap_bars(pdsc); err_out_release_regions: pci_release_regions(pdsc->pdev);
--
2.43.0