lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 21 May 2020 18:16:00 -0700 From: Matthew Wilcox <willy@...radead.org> To: John Hubbard <jhubbard@...dia.com> Cc: Andrew Morton <akpm@...ux-foundation.org>, jgg@...pe.ca, Liam.Howlett@...cle.com, daniel.m.jordan@...cle.com, dave@...olabs.net, hughd@...gle.com, jglisse@...hat.com, ldufour@...ux.ibm.com, linux-kernel@...r.kernel.org, linux-mm@...ck.org, peterz@...radead.org, rientjes@...gle.com, vbabka@...e.cz, walken@...gle.com, yinghan@...gle.com Subject: Re: [PATCH] mm/gup: might_lock_read(mmap_sem) in get_user_pages_fast() On Thu, May 21, 2020 at 06:04:43PM -0700, John Hubbard wrote: > Instead of scattering these assertions across the drivers, > do this assertion inside the core of get_user_pages_fast*() > functions. That also includes pin_user_pages_fast*() > routines. > > Add a might_lock_read(mmap_sem) call to internal_get_user_pages_fast(). > > Suggested-by: Matthew Wilcox <willy@...radead.org> Yup, this is exactly what I meant. Feel free to transform this into an Acked-by: or Reviewed-by: if that's the appropriate tag. Thanks, John!
Powered by blists - more mailing lists