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Date: Fri, 22 Aug 2014 09:00:50 +0000 From: David Laight <David.Laight@...LAB.COM> To: 'Venkat Venkatsubra' <venkat.x.venkatsubra@...cle.com>, "netdev@...r.kernel.org" <netdev@...r.kernel.org> Subject: RE: order:1 failure in ipoib_cm_alloc_rx_skb From: Venkat Venkatsubra > Hello All, > > Many of our customers have hit this order:1 failure in ipoib_cm_alloc_rx_skb causing softlockup: > .... > skb = dev_alloc_skb(IPOIB_CM_HEAD_SIZE + 12); > .... Notwithstanding any other problems, that allocation could fail even if the size were small enough that the entire skb would fit in one page. So the driver needs changing so that the allocation failure doesn't cause a deadlock. OTOH if you can't allocate 8k of contiguous address space and memory the system is unlikely to be working very well at all. David -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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