On 3/7/19 8:41 PM, Peter Zijlstra wrote: > On Thu, Mar 07, 2019 at 08:33:26AM -0800, Linus Torvalds wrote: >> On Thu, Mar 7, 2019 at 3:52 AM Peter Zijlstra <pet...@infradead.org> wrote: >>> >>> XXX: are we sure we want __memset marked AC-safe? >> >> It's certainly one of the safer functions to call with AC set, but it >> sounds wrong anyway. It's not like it's likely to leak kernel data >> (most memset's are with 0, and even the non-zero ones I can't imagine >> are sensitive - more like poison values etc). >> >> What's the call site that made you go "just add __memset() to the list"? > > __asan_{,un}poinson_stack_memory() These two can be called only with CONFIG_KASAN_EXTRA=y which was removed very recently, so it should be safe to delete these functions. > kasan_{,un}poison_shadow() > __memset() > >
- Re: [PATCH 18/20] objtool: Add UACCESS valida... Linus Torvalds
- Re: [PATCH 18/20] objtool: Add UACCESS va... Peter Zijlstra
- Re: [PATCH 18/20] objtool: Add UACCE... hpa
- Re: [PATCH 18/20] objtool: Add UACCE... Peter Zijlstra
- Re: [PATCH 18/20] objtool: Add U... Josh Poimboeuf
- Re: [PATCH 18/20] objtool: Add U... Peter Zijlstra
- Re: [PATCH 18/20] objtool: Add UACCE... Peter Zijlstra
- Re: [PATCH 18/20] objtool: Add U... Peter Zijlstra
- Re: [PATCH 18/20] objtool: Add U... Josh Poimboeuf
- Re: [PATCH 18/20] objtool: Add U... Peter Zijlstra
- Re: [PATCH 18/20] objtool: Add UACCESS valida... Andrey Ryabinin
- Re: [PATCH 18/20] objtool: Add UACCESS va... Peter Zijlstra
- Re: [PATCH 18/20] objtool: Add UACCE... Andrey Ryabinin
- Re: [PATCH 18/20] objtool: Add UACCE... Peter Zijlstra
- Re: [PATCH 18/20] objtool: Add UACCESS validation Josh Poimboeuf
- Re: [PATCH 18/20] objtool: Add UACCESS validation Peter Zijlstra
- Re: [PATCH 18/20] objtool: Add UACCESS valida... Josh Poimboeuf
- Re: [PATCH 18/20] objtool: Add UACCESS validation Peter Zijlstra
- [PATCH 13/20] objtool: Hande function aliases Peter Zijlstra
- Re: [PATCH 13/20] objtool: Hande function aliases Josh Poimboeuf
- Re: [PATCH 13/20] objtool: Hande function aliases Peter Zijlstra