Re: [PATCH] [v2] x86/mpx: fix recursive munmap() corruption

2019-05-09 Thread Ingo Molnar
* Dave Hansen wrote: > Reported-by: Richard Biener > Reported-by: H.J. Lu > Fixes: dd2283f2605e ("mm: mmap: zap pages with read mmap_sem in munmap") > Cc: Yang Shi > Cc: Michal Hocko > Cc: Vlastimil Babka > Cc: Andy Lutomirski > Cc: x...@kernel.org > Cc: Andrew Morton > Cc: linux-ker...@

Re: [PATCH] [v2] x86/mpx: fix recursive munmap() corruption

2019-04-22 Thread Yang Shi
On 4/19/19 12:47 PM, Dave Hansen wrote: Changes from v1: * Fix compile errors on UML and non-x86 arches * Clarify commit message and Fixes about the origin of the bug and add the impact to powerpc / uml / unicore32 -- This is a bit of a mess, to put it mildly. But, it's a bug that o

Re: [PATCH] [v2] x86/mpx: fix recursive munmap() corruption

2019-04-20 Thread Michael Ellerman
Dave Hansen writes: > Changes from v1: > * Fix compile errors on UML and non-x86 arches > * Clarify commit message and Fixes about the origin of the >bug and add the impact to powerpc / uml / unicore32 > > -- > > This is a bit of a mess, to put it mildly. But, it's a bug > that only seems t