Re: KMSAN: uninit-value in mpol_rebind_mm

2019-01-15 Thread Vlastimil Babka
============== BUG: KMSAN: uninit-value in mpol_rebind_policy mm/mempolicy.c:353 [inline] BUG: KMSAN: uninit-value in mpol_rebind_mm+0x249/0x370 mm/mempolicy.c:384 CPU: 1 PID: 17420 Comm: syz-executor4 Not tainted 4.20.0-rc7+ #15 Hardware name: Google Google

Re: KMSAN: uninit-value in mpol_rebind_mm

2019-01-04 Thread Andrew Morton
On Fri, 4 Jan 2019 09:50:31 +0100 Vlastimil Babka wrote: > > Yes, it doesn't and it's not trivial to do. The tool reports uses of > > unint _values_. Values don't necessary reside in memory. It can be a > > register, that come from another register that was calculated as a sum > > of two other va

Re: KMSAN: uninit-value in mpol_rebind_mm

2019-01-04 Thread Dmitry Vyukov
>>> > >>> Unfortunately, I don't have any reproducer for this crash yet. > >>> > >>> IMPORTANT: if you fix the bug, please add the following tag to the commit: > >>> Reported-by: syzbot+b19c2dc2c990ea657...@syzkaller.appspotmail.com > >>

Re: KMSAN: uninit-value in mpol_rebind_mm

2019-01-04 Thread Vlastimil Babka
t;> IMPORTANT: if you fix the bug, please add the following tag to the commit: >>> Reported-by: syzbot+b19c2dc2c990ea657...@syzkaller.appspotmail.com >>> >>> == >>> BUG: KMSAN: uninit-value in mpol_rebind_policy mm/mempolicy.c:353 [inline] >>> BUG: KMSAN:

Re: KMSAN: uninit-value in mpol_rebind_mm

2019-01-03 Thread Vlastimil Babka
t; >>>> Unfortunately, I don't have any reproducer for this crash yet. >>>> >>>> IMPORTANT: if you fix the bug, please add the following tag to the commit: >>>> Reported-by: syzbot+b19c2dc2c990ea657...@syzkaller.appspotmail.com >>>> &g

Re: KMSAN: uninit-value in mpol_rebind_mm

2019-01-03 Thread Alexander Potapenko
> > > > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > > > Reported-by: syzbot+b19c2dc2c990ea657...@syzkaller.appspotmail.com > > > > > > == > > > BUG: KMSAN:

Re: KMSAN: uninit-value in mpol_rebind_mm

2019-01-03 Thread Dmitry Vyukov
t; > > > ============== > > BUG: KMSAN: uninit-value in mpol_rebind_policy mm/mempolicy.c:353 [inline] > > BUG: KMSAN: uninit-value in mpol_rebind_mm+0x249/0x370 mm/mempolicy.c:384 > > The report doesn't seem to indicate whe

Re: KMSAN: uninit-value in mpol_rebind_mm

2019-01-03 Thread Vlastimil Babka
; IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+b19c2dc2c990ea657...@syzkaller.appspotmail.com > > == > BUG: KMSAN: uninit-value in mpol_rebind_policy mm/mempolicy.c:353

KMSAN: uninit-value in mpol_rebind_mm

2018-12-30 Thread syzbot
yzbot+b19c2dc2c990ea657...@syzkaller.appspotmail.com == BUG: KMSAN: uninit-value in mpol_rebind_policy mm/mempolicy.c:353 [inline] BUG: KMSAN: uninit-value in mpol_rebind_mm+0x249/0x370 mm/mempolicy.c:384 CPU: 1 PID: 17420 Comm: syz-executor4 Not ta