Messages in this thread | | | Date | Mon, 26 Nov 2018 09:17:32 +0100 | From | Takashi Iwai <> | Subject | Re: [LKP] [ALSA] 3a6d1980fe: kernel_BUG_at_mm/page_alloc.c |
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On Mon, 26 Nov 2018 01:28:05 +0100, kernel test robot wrote: > > FYI, we noticed the following commit (built with gcc-7): > > commit: 3a6d1980fe96dbbfe3ae58db0048867f5319cdbf ("ALSA: Replace snd_malloc_pages() and snd_free_pages() with standard helpers") > https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git for-next .... > [ 174.830284] kernel BUG at mm/page_alloc.c:2850!
OK, this seem to be an issue about using __GFP_COMP and alloc_pages_exact(). I didn't hit this while testing locally maybe just because I used the buffer size in power-of-two casually.
I dropped the patch until we sort this out.
thanks,
Takashi
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