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During PCI > removal, timer_delete_sync() waits for a running callback but does not > prevent a callback or another service path from rearming the timer. This > can leave the timer referencing the fm10k_intfc after free_netdev(). > > Use timer_shutdown_sync() to permanently prevent rearming before teardown > continues. > > The issue was identified by code inspection. No runtime reproduction or > trace demonstrating the failure is available. > > The patch was not tested on real hardware. No hardware- or > firmware-specific runtime result is available. Validation used source > review and available build or emulation checks. > > Fixes: 54b3c9cfad6b ("fm10k: start service timer on probe") > Cc: stable@vger.kernel.org > Assisted-by: LLM > Signed-off-by: Runyu Xiao > --- > drivers/net/ethernet/intel/fm10k/fm10k_pci.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c > index f5b4d0627..836664cfd 100644 > --- a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c > +++ b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c > @@ -2245,7 +2245,7 @@ static void fm10k_remove(struct pci_dev *pdev) > struct fm10k_intfc *interface = pci_get_drvdata(pdev); > struct net_device *netdev = interface->netdev; > > - timer_delete_sync(&interface->service_timer); > + timer_shutdown_sync(&interface->service_timer); > I don't think I have access to hardware to test this anymore :\, but... Acked-by: Jacob Keller > fm10k_stop_service_event(interface); > fm10k_stop_macvlan_task(interface);