From: Douglas Miller doug.miller@cornelisnetworks.com
commit 4fdfaef71fced490835145631a795497646f4555 upstream.
During hotplug remove it is possible that the update counters work might be pending, and may run after memory has been freed. Cancel the update counters work before freeing memory.
Fixes: 7724105686e7 ("IB/hfi1: add driver files") Signed-off-by: Douglas Miller doug.miller@cornelisnetworks.com Signed-off-by: Dennis Dalessandro dennis.dalessandro@cornelisnetworks.com Link: https://lore.kernel.org/r/169099756100.3927190.15284930454106475280.stgit@aw... Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/infiniband/hw/hfi1/chip.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/infiniband/hw/hfi1/chip.c +++ b/drivers/infiniband/hw/hfi1/chip.c @@ -12306,6 +12306,7 @@ static void free_cntrs(struct hfi1_devda
if (dd->synth_stats_timer.function) del_timer_sync(&dd->synth_stats_timer); + cancel_work_sync(&dd->update_cntr_work); ppd = (struct hfi1_pportdata *)(dd + 1); for (i = 0; i < dd->num_pports; i++, ppd++) { kfree(ppd->cntrs);