Messages in this thread | | | Date | Fri, 29 Aug 2014 12:49:45 +0300 | From | Dan Carpenter <> | Subject | Re: [PANIC, hyperv] BUG: unable to handle kernel paging request at ffff880077800004 (hv_ringbuffer_write) |
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It's sort of weird that this is an alignment issue. The config that was posted earlier was an x86_64 config and on that system then the pointers from kmalloc() should already be aligned correctly at sizeof(u64).
Earlier I said I suspected the code is racy, so possibly changing from kmalloc() to get_zeroed_page() just changes the timing enough so we don't see the race condition.
regards, dan carpenter
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