[Kodi causes kernel failure of memory allocation in CMA]

Ok, thx for help.

[Kodi causes kernel failure of memory allocation in CMA]

19 hours ago, RagnerBG said:

This is not H3 and CMA is disabled

 

Why are these options disabled in armbian kernel for a20?

 

19 hours ago, RagnerBG said:

I am not sure Kodi will work on A20, even with s/w video acceleration and probably you will have some GLES error later if you don't take care of Mali driver, also. There were topics here... Better try this - hardware acceleration on allwinner A10/A20 with vdpau and OpenGLES (zero-copy), but it's a huge mess so far.

Thx for link. I have VDPAU working in mpv already, so I'll evaluate what's needed to be done for Kodi.

[Banana pi R1 and OVS]

There's only one CPU port eth0, so free  eth0.* ports

Quote

for i in {102..105}; do 

ip l set eth0.${i} nomaster

done

and add them as netdev ports to openvswitch

[Kodi causes kernel failure of memory allocation in CMA]

Default memory reservations from dmesg:

Quote

[  +0.000000] Memory Reserved:
[  +0.000000]   SYS  : 0x43000000 - 0x4300ffff  (  64 kB)
[  +0.000000]   VE   : 0x44000000 - 0x48ffffff  (  80 MB)
[  +0.000000]   G2D  : 0x49000000 - 0x49ffffff  (  16 MB)
[  +0.000000]   LCD  : 0x4a000000 - 0x4bffffff  (  32 MB)

CMA limit is always 128M and I wasn't able to change it with kernel argument cma 

Quote

[  +0.003704] UMP<2>: Using CMA memory backend, allocation limit: 134217728

 

Also forgot to mention that somehow CONFIG_CMA option in kernel is disabled, so I dunno how UMP's cma allocator works at all.

[Kodi causes kernel failure of memory allocation in CMA]

When I start kodi it writes to stdout

Quote

/usr/lib/arm-linux-gnueabihf/kodi/kodi-xrandr: Failed to get size of gamma for output default
XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
     after 128 requests (128 known processed) with 0 events remaining.
*** Error in `/usr/lib/arm-linux-gnueabihf/kodi/kodi.bin': double free or corruption (out): 0x01a82538 ***
Aborted
Crash report available at /home/user/kodi_crashlog-20170730_001210.log

and I see in dmesg

Quote

[ 3025.322262] UMP<2>: New session opened
[ 3026.744717] ------------[ cut here ]------------
[ 3026.751300] WARNING: at mm/page_alloc.c:2325 __alloc_pages_nodemask+0x374/0x850()
[ 3026.765661] Modules linked in: cpufreq_userspace xts algif_skcipher af_alg sha256_generic bridge dm_thin_pool dm_persistent_data dm_bufio 8021q garp stp llc 8192cu sg spidev sunxi_wdt brcmfmac brcmutil mali_drm drm mali disp_ump ump
[ 3026.792239] [<c001538c>] (unwind_backtrace+0x0/0x12c) from [<c0037030>] (warn_slowpath_common+0x54/0x64)
[ 3026.800613] [<c0037030>] (warn_slowpath_common+0x54/0x64) from [<c00370dc>] (warn_slowpath_null+0x1c/0x24)
[ 3026.809524] [<c00370dc>] (warn_slowpath_null+0x1c/0x24) from [<c00b4298>] (__alloc_pages_nodemask+0x374/0x850)
[ 3026.818730] [<c00b4298>] (__alloc_pages_nodemask+0x374/0x850) from [<c0018a20>] (__alloc_remap_buffer+0x30/0x160)
[ 3026.827397] [<c0018a20>] (__alloc_remap_buffer+0x30/0x160) from [<c0018ce8>] (arm_dma_alloc+0x198/0x290)
[ 3026.836119] [<c0018ce8>] (arm_dma_alloc+0x198/0x290) from [<bf004664>] (cma_allocate+0x98/0x288 [ump])
[ 3026.845159] [<bf004664>] (cma_allocate+0x98/0x288 [ump]) from [<bf002b40>] (_ump_ukk_allocate+0xcc/0x338 [ump])
[ 3026.854744] [<bf002b40>] (_ump_ukk_allocate+0xcc/0x338 [ump]) from [<bf005810>] (ump_allocate_wrapper+0x64/0x224 [ump])
[ 3026.863476] [<bf005810>] (ump_allocate_wrapper+0x64/0x224 [ump]) from [<c00fea34>] (do_vfs_ioctl+0x3ac/0x594)
[ 3026.870961] [<c00fea34>] (do_vfs_ioctl+0x3ac/0x594) from [<c00fec50>] (sys_ioctl+0x34/0x60)
[ 3026.878302] [<c00fec50>] (sys_ioctl+0x34/0x60) from [<c000ec20>] (ret_fast_syscall+0x0/0x30)
[ 3026.882081] ---[ end trace 1d210551f3cf7e0b ]---
[ 3026.882815] UMP<1>: Failed to allocate needed CMA memory 8294400 bytes
[ 3026.888137] UMP<1>: _ump_ukk_allocate() failed in ump_ioctl_allocate()
[ 3026.913055] [DISP] layer allocated at close: 0,101
[ 3026.913856] UMP<2>: Session closed

 

My setup

Board: Lamobo R1

Kernel: 3.4.113 (default)

Xorg DDX: fbturbo

GLES: mali r3p0

VDPAU: cedrus

 

This error occurs with various memory reservation settings in kernel arguments including default (no reservation settings at all in kernel cmdline)