On Fri, 2019-07-26 at 15:52 +0300, Andrey Ryabinin wrote: > > On 7/26/19 3:28 PM, Walter Wu wrote: > > On Fri, 2019-07-26 at 15:00 +0300, Andrey Ryabinin wrote: > >> > > > >>> > >>> > >>> I remember that there are already the lists which you concern. Maybe we > >>> can try to solve those problems one by one. > >>> > >>> 1. deadlock issue? cause by kmalloc() after kfree()? > >> > >> smp_call_on_cpu() > > > >>> 2. decrease allocation fail, to modify GFP_NOWAIT flag to GFP_KERNEL? > >> > >> No, this is not gonna work. Ideally we shouldn't have any allocations there. > >> It's not reliable and it hurts performance. > >> > > I dont know this meaning, we need create a qobject and put into > > quarantine, so may need to call kmem_cache_alloc(), would you agree this > > action? > > > > How is this any different from what you have now? I originally thought you already agreed the free-list(tag-based quarantine) after fix those issue. If no allocation there, i think maybe only move generic quarantine into tag-based kasan, but its memory consumption is more bigger our patch. what do you think?
