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IB/hfi1: Shutdown self-rearming timers before freeing

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The HFI1 receive error and synthetic counter timers rearm themselves from
their callbacks. Their cleanup paths use timer_delete_sync(), which only
waits for a running callback and does not prevent a concurrent or
subsequent rearm.

Use timer_shutdown_sync() when releasing these timers. This prevents a
callback from enqueueing either timer after cleanup begins, before the
containing hfi1_devdata is freed.

Preserve the existing work cancellation and workqueue destruction ordering
for synthetic counters.

Fixes: 7724105686 ("IB/hfi1: add driver files")
Cc: stable@vger.kernel.org
Assisted-by: LLM
Signed-off-by: Runyu Xiao <runyu.xiao@seu.edu.cn>
Link: https://patch.msgid.link/20260930070455.2934286-1-runyu.xiao@seu.edu.cn
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Runyu Xiao 2026-09-30 15:04:55 +08:00 committed by Leon Romanovsky
parent 82b7484393
commit 9d3259e41c
1 changed files with 2 additions and 2 deletions
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4
drivers/infiniband/hw/hfi1/chip.c
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@ -5567,7 +5567,7 @@ static int init_rcverr(struct hfi1_devdata *dd)
static void free_rcverr(struct hfi1_devdata *dd)
{
if (dd->rcverr_timer.function)
timer_delete_sync(&dd->rcverr_timer);
timer_shutdown_sync(&dd->rcverr_timer);
}
static void handle_rxe_err(struct hfi1_devdata *dd, u32 unused, u64 reg)
@ -12300,7 +12300,7 @@ static void free_cntrs(struct hfi1_devdata *dd)
int i;
if (dd->synth_stats_timer.function)
timer_delete_sync(&dd->synth_stats_timer);
timer_shutdown_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++) {