Re: KASAN: use-after-free Read in sha512_ctx_mgr_resubmit

2018-10-05 Thread Eric Biggers
On Wed, Aug 15, 2018 at 09:00:04AM -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit:7796916146b8 Merge branch 'x86-cpu-for-linus' of git://git.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=164b192240 > kernel

Re: KASAN: use-after-free Read in sha512_ctx_mgr_resubmit

2018-08-28 Thread Megha Dey
On Tue, 2018-08-28 at 01:01 +0200, Ard Biesheuvel wrote: > On 28 August 2018 at 01:08, Megha Dey wrote: > > On Wed, 2018-08-22 at 14:20 +0800, Herbert Xu wrote: > >> On Tue, Aug 21, 2018 at 02:43:56PM +0200, Ard Biesheuvel wrote: > >> > > >> > I agree. The code is obviously broken in a way that wo

Re: KASAN: use-after-free Read in sha512_ctx_mgr_resubmit

2018-08-27 Thread Ard Biesheuvel
On 28 August 2018 at 01:08, Megha Dey wrote: > On Wed, 2018-08-22 at 14:20 +0800, Herbert Xu wrote: >> On Tue, Aug 21, 2018 at 02:43:56PM +0200, Ard Biesheuvel wrote: >> > >> > I agree. The code is obviously broken in a way that would have been >> > noticed if it were in wide use, and it is too co

Re: KASAN: use-after-free Read in sha512_ctx_mgr_resubmit

2018-08-27 Thread Megha Dey
On Wed, 2018-08-22 at 14:20 +0800, Herbert Xu wrote: > On Tue, Aug 21, 2018 at 02:43:56PM +0200, Ard Biesheuvel wrote: > > > > I agree. The code is obviously broken in a way that would have been > > noticed if it were in wide use, and it is too complicated for mere > > mortals to fix or maintain. I

Re: KASAN: use-after-free Read in sha512_ctx_mgr_resubmit

2018-08-21 Thread Herbert Xu
On Tue, Aug 21, 2018 at 02:43:56PM +0200, Ard Biesheuvel wrote: > > I agree. The code is obviously broken in a way that would have been > noticed if it were in wide use, and it is too complicated for mere > mortals to fix or maintain. I suggest we simply remove it for now, and > if anyone wants to

Re: KASAN: use-after-free Read in sha512_ctx_mgr_resubmit

2018-08-21 Thread Ard Biesheuvel
On 20 August 2018 at 09:31, Eric Biggers wrote: > [+sha512-mb maintainers...] > > On Wed, Aug 15, 2018 at 09:00:04AM -0700, syzbot wrote: >> Hello, >> >> syzbot found the following crash on: >> >> HEAD commit:7796916146b8 Merge branch 'x86-cpu-for-linus' of git://git.. >> git tree: upstr

Re: KASAN: use-after-free Read in sha512_ctx_mgr_resubmit

2018-08-20 Thread Eric Biggers
[+sha512-mb maintainers...] On Wed, Aug 15, 2018 at 09:00:04AM -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit:7796916146b8 Merge branch 'x86-cpu-for-linus' of git://git.. > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.