The hypercall fails due to invalid write permissions on the page that's attempting to be pinned. Perhaps the page that's being pinned for PTEs was reused?
I don't think that's the cause in this case since XFS isn't in use. Perhaps some other kernel subsystem is leaving pages behind in the vmalloc area with write permissions set?
The hypercall fails due to invalid write permissions on the page that's attempting to be pinned. Perhaps the page that's being pinned for PTEs was reused?
One fix that was applied to the upstream kernel for such problems was this: http:// git.kernel. org/?p= linux/kernel/ git/torvalds/ linux-2. 6.git;a= commitdiff; h=64141da587241 301ce8638cc945f 8b67853156ec
I don't think that's the cause in this case since XFS isn't in use. Perhaps some other kernel subsystem is leaving pages behind in the vmalloc area with write permissions set?