Hi, dmesg floods with PFNs busy messages. [10119.071455] alloc_contig_range: [bb900, bbc00) PFNs busy [10119.071631] alloc_contig_range: [bba00, bbd00) PFNs busy [10119.071762] alloc_contig_range: [bbb00, bbe00) PFNs busy [10119.071940] alloc_contig_range: [bbc00, bbf00) PFNs busy [10119.072039] alloc_contig_range: [bbd00, bc000) PFNs busy [10119.072188] alloc_contig_range: [bbe00, bc100) PFNs busy [10119.072301] alloc_contig_range: [bbf00, bc200) PFNs busy [10119.072403] alloc_contig_range: [bc000, bc300) PFNs busy [10119.072549] alloc_contig_range: [bc100, bc400) PFNs busy [10119.072584] [drm:exynos_drm_gem_create] *ERROR* failed to allocate buffer. I think this is triggered when drm tries to allocate CMA buffers. I might have seen one or two messages in 4.9, but since 4.10, it just floods dmesg. Is this a known problem? I am seeing this on odroid-xu4 Linux odroid 4.10.0-rc2-00251-ge03c755-dirty #12 SMP PREEMPT Wed Jan 11 23:12:52 UTC 2017 armv7l armv7l armv7l GNU/Linux thanks, -- Shuah -- Shuah Khan Sr. Linux Kernel Developer Open Source Innovation Group Samsung Research America (Silicon Valley) shuahkh@xxxxxxxxxxxxxxx -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>