Re: KASAN: slab-out-of-bounds Read in erspan_xmit

2018-01-23 Thread William Tu
On Tue, Jan 23, 2018 at 11:45 AM, Dmitry Vyukov wrote: > On Tue, Jan 23, 2018 at 8:17 PM, William Tu wrote: >> Thanks for the reply. >> >> On Tue, Jan 23, 2018 at 11:03 AM, Dmitry Vyukov wrote: >>> On Tue, Jan 23, 2018 at 7:58 PM, David Ahern wrote: On 1/23/18 11:50 AM, William Tu wrote: >

Re: KASAN: slab-out-of-bounds Read in erspan_xmit

2018-01-23 Thread Dmitry Vyukov
On Tue, Jan 23, 2018 at 8:17 PM, William Tu wrote: > Thanks for the reply. > > On Tue, Jan 23, 2018 at 11:03 AM, Dmitry Vyukov wrote: >> On Tue, Jan 23, 2018 at 7:58 PM, David Ahern wrote: >>> On 1/23/18 11:50 AM, William Tu wrote: Hi, I'm new to kasan and trying to follow this in

Re: KASAN: slab-out-of-bounds Read in erspan_xmit

2018-01-23 Thread William Tu
Thanks for the reply. On Tue, Jan 23, 2018 at 11:03 AM, Dmitry Vyukov wrote: > On Tue, Jan 23, 2018 at 7:58 PM, David Ahern wrote: >> On 1/23/18 11:50 AM, William Tu wrote: >>> Hi, >>> >>> I'm new to kasan and trying to follow this instruction to reproduce the >>> issue: >>> https://github.com/

Re: KASAN: slab-out-of-bounds Read in erspan_xmit

2018-01-23 Thread Dmitry Vyukov
On Tue, Jan 23, 2018 at 7:58 PM, David Ahern wrote: > On 1/23/18 11:50 AM, William Tu wrote: >> Hi, >> >> I'm new to kasan and trying to follow this instruction to reproduce the >> issue: >> https://github.com/google/syzkaller/blob/master/docs/executing_syzkaller_programs.md >> >> After re-compil

Re: KASAN: slab-out-of-bounds Read in erspan_xmit

2018-01-23 Thread David Ahern
On 1/23/18 11:50 AM, William Tu wrote: > Hi, > > I'm new to kasan and trying to follow this instruction to reproduce the issue: > https://github.com/google/syzkaller/blob/master/docs/executing_syzkaller_programs.md > > After re-compile my kernel with KASAN related config enable, I run > $ ./syz-e

Re: KASAN: slab-out-of-bounds Read in erspan_xmit

2018-01-23 Thread William Tu
Hi, I'm new to kasan and trying to follow this instruction to reproduce the issue: https://github.com/google/syzkaller/blob/master/docs/executing_syzkaller_programs.md After re-compile my kernel with KASAN related config enable, I run $ ./syz-execprog -cover=0 -repeat=0 -procs=16 program I wonde

Re: KASAN: slab-out-of-bounds Read in erspan_xmit

2018-01-22 Thread William Tu
On Mon, Jan 22, 2018 at 2:45 PM, David Ahern wrote: > [ cc William Tu ] > > On 1/22/18 12:58 PM, syzbot wrote: >> Hello, >> >> syzbot hit the following crash on net-next commit >> 9d6474e458b13a94a0d5b141f2b8f38adf1991ae (Mon Jan 22 02:55:38 2018 +) >> tun: add missing rcu annotation >> >> So

Re: KASAN: slab-out-of-bounds Read in erspan_xmit

2018-01-22 Thread David Ahern
[ cc William Tu ] On 1/22/18 12:58 PM, syzbot wrote: > Hello, > > syzbot hit the following crash on net-next commit > 9d6474e458b13a94a0d5b141f2b8f38adf1991ae (Mon Jan 22 02:55:38 2018 +) > tun: add missing rcu annotation > > So far this crash happened 5 times on net-next. > C reproducer is