On 6/25/19 8:50 AM, Christoph Hellwig wrote: > On Tue, Jun 25, 2019 at 08:46:57AM +0200, John Paul Adrian Glaubitz wrote: >> I can reproduce the crash when trying to load the module for the USB controllers, >> for example. Loading the kernel module for the SATA controllers provokes the >> backtrace as well. >> >> I have skimmed through the code a bit , but I'm not sure whether I understand >> the code in kernel/dma/direct.c correctly, so my suggestion would be to just >> set GFP_DMA32 in __dma_direct_alloc_pages() unconditionally for a test. Would >> that be enough for a test? > > Yes. Okay, thanks. I'll whip up a patch for Frank to test. Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaubitz@xxxxxxxxxx `. `' Freie Universitaet Berlin - glaubitz@xxxxxxxxxxxxxxxxxxx `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
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