From: Dave Jiang <dave.jiang@xxxxxxxxx> Add rate limit to the dev_warn() call in the misc interrupt thread. This limits dmesg getting spammed if a descriptor submitter is spamming bad descriptors with invalid completion records and resulting the errors being continuously reported by the misc interrupt handling thread. Reported-by: Sanjay Kumar <sanjay.k.kumar@xxxxxxxxx> Signed-off-by: Dave Jiang <dave.jiang@xxxxxxxxx> Reviewed-by: Fenghua Yu <fenghua.yu@xxxxxxxxx> --- This patch was sent to dmaengine mailing list before: https://lore.kernel.org/all/165125377735.312075.15715853788802098990.stgit@xxxxxxxxxxxxxxxxxxxxxxxxxx/ But it hasn't be merged into upstream yet. Add my Reviewed-by tag and re-send it. No code or commit message change. drivers/dma/idxd/irq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/idxd/irq.c b/drivers/dma/idxd/irq.c index 041be6a4dec4..8e895a1e1881 100644 --- a/drivers/dma/idxd/irq.c +++ b/drivers/dma/idxd/irq.c @@ -430,8 +430,8 @@ irqreturn_t idxd_misc_thread(int vec, void *data) val |= IDXD_INTC_ERR; for (i = 0; i < 4; i++) - dev_warn(dev, "err[%d]: %#16.16llx\n", - i, idxd->sw_err.bits[i]); + dev_warn_ratelimited(dev, "err[%d]: %#16.16llx\n", + i, idxd->sw_err.bits[i]); err = true; } -- 2.32.0
