On 01/08/2015 09:08 AM, Michal Hocko wrote:
[CCing linux-mm and CMA people]
[Full message here:
http://article.gmane.org/gmane.linux.ports.arm.kernel/383669]
[ 1054.095277] DMA: 109*64kB (UR) 53*128kB (R) 8*256kB (R) 0*512kB 0*1024kB
0*2048kB 1*4096kB (R) 0*8192kB 0*16384kB 1*32768kB (R) 0*65536kB = 52672kB
[ 1054.108621] Normal: 191*64kB (MR) 0*128kB 0*256kB 0*512kB 0*1024kB
0*2048kB 0*4096kB 0*8192kB 0*16384kB 0*32768kB 0*65536kB = 12224kB
[...]
[ 1054.142545] Free swap = 6598400kB
[ 1054.145928] Total swap = 8388544kB
[ 1054.149317] 262112 pages RAM
[ 1054.152180] 0 pages HighMem/MovableOnly
[ 1054.155995] 18446744073709544361 pages reserved
[ 1054.160505] 8192 pages cma reserved
Besides underflow in the reserved pages accounting mentioned in other
email the free lists look strange as well. All free blocks with some memory
are marked as reserved. I would suspect something CMA related.
I get the same failure with CMA turned off entirely. I assume that means
CMA is not the culprit.
--Mark Langsdorf
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