On 17/03/17 17:33, Richard Weinberger wrote: > Am 17.03.2017 um 18:04 schrieb Anton Ivanov: >> On 17/03/17 16:56, Richard Weinberger wrote: >>> Anton, >>> >>> On Fri, Mar 17, 2017 at 8:51 AM, Anton Ivanov >>> <anton.iva...@kot-begemot.co.uk> wrote: >>>> Hi list, hi Richard >>>> >>>> There is an extra check in mm/mmap.c which now throws a WARN on every >>>> page in making UML unusable with the latest 4.11-rc2 >>> Which WARN? Can you find the offending commit? >> mm/mmap.c line 1112 > Okay, this triggers since: > > commit e86f15ee64d8ee46255d964d55f74f5ba9af8c36 > Author: Andrea Arcangeli <aarca...@redhat.com> > Date: Fri Oct 7 17:01:28 2016 -0700 > > mm: vma_merge: fix vm_page_prot SMP race condition against rmap_walk > > But you have to enable VM debugging to see it.
I have most debugging enabled to make sure I do not introduce any re-entrancy in the IRQ handlers and/or have any allocations of the wrong type where they do not belong. We should probably submit a short patch #ifdef to turn this WARN() off for UML Brgds, A. > > Thanks, > //richard > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
