Hello. On 2020/04/09 15:38, John Hubbard wrote: > Also, if you happen to know if anything is calling pin_user_page*() and/or unpin_user_page*(), that > is extra credit. :) Ah, I got it. I can see that only nr_foll_pin_released is increasing after I hit WARN_ON(), and indeed AKARI is calling unpin_user_page() when put_user() should be used. https://osdn.net/projects/akari/scm/svn/blobs/head/trunk/akari/permission.c line 1480 Sorry for the noise. Thank you.
