The problem was how I convert received page address to kernel address. I need to do it with kmap()Now all works again 16.04.2019, 17:17, "Lev Olshvang" :Hello all, I need to remap 1 page from user space to kernel and I use get_user_pages_remote for this purpose ret = get_user_pages_remote(tsk, tsk->mm, offset, 1, 0, &pinned_page, NULL); Kernel is 4.9.88I compiled module for Arm Vertex board and run it under QEMU with no problemBut on Android 9 with this exactly kernel I got Oops:Unable to handle kernel paging request at virtual address fe002000pgd = d8c14000[fe002000] *pgd=Internal error: Oops: 5 [#1] PREEMPT SMP ARM I checked config files and did not find any difference( almost except balloon ) in memory related configs. Does anybody have a clue what is a problem here? Regards,Lev ___
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