Re: net/sched: GPF in qdisc_hash_add

2017-03-24 Thread Cong Wang
On Thu, Mar 23, 2017 at 12:10 PM, Eric Dumazet wrote: > On Thu, Mar 23, 2017 at 12:06 PM, Dmitry Vyukov wrote: >> >> On Thu, Mar 23, 2017 at 8:00 PM, Cong Wang wrote: >> > On Thu, Mar 23, 2017 at 9:06 AM, Dmitry Vyukov

Re: net/sched: GPF in qdisc_hash_add

2017-03-24 Thread Cong Wang
On Thu, Mar 23, 2017 at 12:10 PM, Eric Dumazet wrote: > On Thu, Mar 23, 2017 at 12:06 PM, Dmitry Vyukov wrote: >> >> On Thu, Mar 23, 2017 at 8:00 PM, Cong Wang wrote: >> > On Thu, Mar 23, 2017 at 9:06 AM, Dmitry Vyukov wrote: >> >> kasan: CONFIG_KASAN_INLINE enabled >> >> kasan: GPF could be

Re: net/sched: GPF in qdisc_hash_add

2017-03-23 Thread Eric Dumazet
On Thu, Mar 23, 2017 at 12:06 PM, Dmitry Vyukov wrote: > > On Thu, Mar 23, 2017 at 8:00 PM, Cong Wang wrote: > > On Thu, Mar 23, 2017 at 9:06 AM, Dmitry Vyukov wrote: > >> kasan: CONFIG_KASAN_INLINE enabled > >> kasan: GPF could

Re: net/sched: GPF in qdisc_hash_add

2017-03-23 Thread Eric Dumazet
On Thu, Mar 23, 2017 at 12:06 PM, Dmitry Vyukov wrote: > > On Thu, Mar 23, 2017 at 8:00 PM, Cong Wang wrote: > > On Thu, Mar 23, 2017 at 9:06 AM, Dmitry Vyukov wrote: > >> kasan: CONFIG_KASAN_INLINE enabled > >> kasan: GPF could be caused by NULL-ptr deref or user memory access > >> general

Re: net/sched: GPF in qdisc_hash_add

2017-03-23 Thread Dmitry Vyukov
On Thu, Mar 23, 2017 at 8:00 PM, Cong Wang wrote: > On Thu, Mar 23, 2017 at 9:06 AM, Dmitry Vyukov wrote: >> kasan: CONFIG_KASAN_INLINE enabled >> kasan: GPF could be caused by NULL-ptr deref or user memory access >> general protection fault:

Re: net/sched: GPF in qdisc_hash_add

2017-03-23 Thread Dmitry Vyukov
On Thu, Mar 23, 2017 at 8:00 PM, Cong Wang wrote: > On Thu, Mar 23, 2017 at 9:06 AM, Dmitry Vyukov wrote: >> kasan: CONFIG_KASAN_INLINE enabled >> kasan: GPF could be caused by NULL-ptr deref or user memory access >> general protection fault: [#1] SMP KASAN >> Dumping ftrace buffer: >>

Re: net/sched: GPF in qdisc_hash_add

2017-03-23 Thread Cong Wang
On Thu, Mar 23, 2017 at 9:06 AM, Dmitry Vyukov wrote: > kasan: CONFIG_KASAN_INLINE enabled > kasan: GPF could be caused by NULL-ptr deref or user memory access > general protection fault: [#1] SMP KASAN > Dumping ftrace buffer: >(ftrace buffer empty) > Modules linked

Re: net/sched: GPF in qdisc_hash_add

2017-03-23 Thread Cong Wang
On Thu, Mar 23, 2017 at 9:06 AM, Dmitry Vyukov wrote: > kasan: CONFIG_KASAN_INLINE enabled > kasan: GPF could be caused by NULL-ptr deref or user memory access > general protection fault: [#1] SMP KASAN > Dumping ftrace buffer: >(ftrace buffer empty) > Modules linked in: > CPU: 2 PID:

net/sched: GPF in qdisc_hash_add

2017-03-23 Thread Dmitry Vyukov
Hello, I've hit the following GPF while running syzkaller on commit 093b995e3b55a0ae0670226ddfcb05bfbf0099ae. Note the preceding injected kmalloc failure, most likely it's the root cause. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 2 PID:

net/sched: GPF in qdisc_hash_add

2017-03-23 Thread Dmitry Vyukov
Hello, I've hit the following GPF while running syzkaller on commit 093b995e3b55a0ae0670226ddfcb05bfbf0099ae. Note the preceding injected kmalloc failure, most likely it's the root cause. FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 2 PID: