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> --- 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 98aad8a9ed2c..0d43ba228f0d 100644 --- a/drivers/dma/idxd/irq.c +++ b/drivers/dma/idxd/irq.c @@ -272,8 +272,8 @@ 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; }
