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From: Jorgen Lundman <lundman@lundman.net>
To: linux-crypto@vger.kernel.org
Subject: Re: Crypto causes panic in scatterwalk_done with large/multiple buffers
Date: Sun, 18 Nov 2012 11:10:39 +0900	[thread overview]
Message-ID: <50A8439F.4060201@lundman.net> (raw)
In-Reply-To: <50A82BD1.4000505@lundman.net>


Specifically, the crash I get is finally in here:


static void Xscatterwalk_pagedone(struct scatter_walk *walk, int out,
                                  unsigned int more)
{
     if (out) {
         struct page *page;

         page = sg_page(walk->sg) + ((walk->offset - 1) >> PAGE_SHIFT);

         printk("**** PageSlab: page %p offset 0x%04lx\n",
                page, walk->offset);

         if (!PageSlab(page)) {    // <===== here

kernel: [   62.650590] **** PageSlab: page ffffeb04000b7e40 offset 0x1000


Commenting out the call to PageSlab and flush_dcache_page(page); 
surprisingly makes it work a little better. But presumably it comes with 
a cost that I can not yet see.

  reply	other threads:[~2012-11-18  2:10 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-11-15  9:03 Crypto causes panic in scatterwalk_done with large/multiple buffers Jorgen Lundman
2012-11-17  0:42 ` Jussi Kivilinna
2012-11-17  8:39   ` Jussi Kivilinna
2012-11-18  0:29     ` Jorgen Lundman
2012-11-18  2:10       ` Jorgen Lundman [this message]
2012-11-18 17:40       ` Jussi Kivilinna
2012-11-19  0:29         ` Jorgen Lundman

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