Re: KASAN: use-after-free Read in perf_trace_lock_acquire (2)

2018-04-21 Thread Eric Biggers
On Tue, Jan 30, 2018 at 01:52:02AM -0800, syzbot wrote: > syzbot has found reproducer for the following crash on upstream commit > 6304672b7f0a5c010002e63a075160856dc4f88d (Tue Jan 30 03:08:02 2018 +) > Merge branch 'x86-pti-for-linus' of > git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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

2017-10-31 Thread Dmitry Vyukov
On Tue, Oct 31, 2017 at 4:02 PM, Peter Zijlstra wrote: > On Tue, Oct 31, 2017 at 02:49:02PM +0300, Dmitry Vyukov wrote: >> Peter, is this dup of "WARNING in get_pi_state"? >> https://groups.google.com/d/msg/syzkaller-bugs/jpui-7LJvUw/b77s8UZiAgAJ > > Yep, same race, different outcome. Let's tell

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

2017-10-31 Thread Peter Zijlstra
On Tue, Oct 31, 2017 at 02:49:02PM +0300, Dmitry Vyukov wrote: > Peter, is this dup of "WARNING in get_pi_state"? > https://groups.google.com/d/msg/syzkaller-bugs/jpui-7LJvUw/b77s8UZiAgAJ Yep, same race, different outcome.

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

2017-10-31 Thread Dmitry Vyukov
Peter, is this dup of "WARNING in get_pi_state"? https://groups.google.com/d/msg/syzkaller-bugs/jpui-7LJvUw/b77s8UZiAgAJ On Tue, Oct 31, 2017 at 2:43 PM, syzbot wrote: >> #syz upstream > > > Can't upstream, this is final destination. > > > >> On Mon, Oct 30, 2017 at 10:53 PM, syzbot >> >> wrote:

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

2017-10-31 Thread Dmitry Vyukov
#syz upstream On Mon, Oct 30, 2017 at 10:53 PM, syzbot wrote: > Hello, > > syzkaller hit the following crash on > dbeb1a8ff547ffc2db69b44b4445a9eadc025abf > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw con

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

2017-10-31 Thread syzbot
#syz upstream Can't upstream, this is final destination. On Mon, Oct 30, 2017 at 10:53 PM, syzbot wrote: Hello, syzkaller hit the following crash on dbeb1a8ff547ffc2db69b44b4445a9eadc025abf git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/master compiler: gcc (GCC) 7.1.1