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From: Olaf Kirch <okir@lst.de> Date: Tue, 19 Jun 2007 09:56:24 +0200 > From: Olaf Kirch <olaf.kirch@oracle.com> > > Make skb_seq_read unmap the last fragment > > Having walked through the entire skbuff, skb_seq_read would leave the > last fragment mapped. As a consequence, the unwary caller would leak > kmaps, and proceed with preempt_count off by one. The only (kind of > non-intuitive) workaround is to use skb_seq_read_abort. > > This patch makes sure skb_seq_read always unmaps frag_data after having > cycled through the skb's paged part. > > Signed-off-by: olaf.kirch@oracle.com Thanks for finding and fixing this bug. Patch applied, thanks again Olaf. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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