[U-Boot] [PATCH] fs/fat: fix unaligned access regression

Tom Rini trini at konsulko.com
Mon Oct 9 22:38:21 UTC 2017


On Mon, Oct 09, 2017 at 06:49:02PM -0300, Fabio Estevam wrote:
> On Mon, Oct 9, 2017 at 9:39 AM, Jonathan Gray <jsg at jsg.id.au> wrote:
> > Since
> > 2460098cffacd18729262e3ed36656e6943783ed (fs/fat: Reduce stack usage)
> > Trying to load a file off a FAT fs on i.MX 6 based CuBox-i4Pro fails:
> >
> > switch to partitions #0, OK
> > mmc0 is current device
> > Scanning mmc 0:1...
> > CACHE: Misaligned operation at range [8f89da30, 8f89e230]
> > CACHE: Misaligned operation at range [8f89da30, 8f89e230]
> > ERROR: v7_outer_cache_inval_range - start address is not aligned - 0x8f89da30
> > ERROR: v7_outer_cache_inval_range - stop address is not aligned - 0x8f89e230
> > CACHE: Misaligned operation at range [8f89da30, 8f89e230]
> > CACHE: Misaligned operation at range [8f89da30, 8f89e230]
> > ERROR: v7_outer_cache_inval_range - start address is not aligned - 0x8f89da30
> > ERROR: v7_outer_cache_inval_range - stop address is not aligned - 0x8f89e230
> > CACHE: Misaligned operation at range [8f89dca0, 8f89e4a0]
> > CACHE: Misaligned operation at range [8f89dca0, 8f89e4a0]
> > CACHE: Misaligned operation at range [8f89dca0, 8f89e4a0]
> > CACHE: Misaligned operation at range [8f89dca0, 8f89e4a0]
> > CACHE: Misaligned operation at range [8f89dc68, 8f89e468]
> > CACHE: Misaligned operation at range [8f89dc68, 8f89e468]
> > ERROR: v7_outer_cache_inval_range - start address is not aligned - 0x8f89dc68
> > ERROR: v7_outer_cache_inval_range - stop address is not aligned - 0x8f89e468
> > ...
> >
> > Switching the malloc() calls to malloc_cache_aligned() avoids
> > the alignment errors and allows booting to continue.
> >
> > Signed-off-by: Jonathan Gray <jsg at jsg.id.au>
> 
> Tom has just applied the same fix:
> http://git.denx.de/?p=u-boot.git;a=commitdiff;h=09fa964bba80c45432660f0e64362181900a5aef;hp=99e46dfc6a9176f6f0680c9dfdf33c97d56336ce

Oh heck, now I'm embarrassed for not recalling we had the same issue
with a fix in the queue, sorry!

-- 
Tom
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