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IB/hfi1: Fix possible panic during hotplug remove

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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: 7724105686 ("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@awfm-02.cornelisnetworks.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Douglas Miller
2023-08-02 13:32:41 -04:00
committed by Leon Romanovsky
parent 186b169cf1
commit 4fdfaef71f
1 changed files with 1 additions and 0 deletions
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drivers/infiniband/hw/hfi1/chip.c
+1
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@@ -12307,6 +12307,7 @@ static void free_cntrs(struct hfi1_devdata *dd)
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);