Re: net/netlink: null-ptr-deref in netlink_dump/lock_acquire

2016-11-25 Thread Dmitry Vyukov
On Thu, Nov 3, 2016 at 6:21 PM, Andrey Konovalov wrote: > Hi, > > Another report that looks related: > > [ INFO: possible circular locking dependency detected ] > 4.9.0-rc3+ #344 Not tainted > --- > syz-executor/25526 is trying to acquire lock: >

Re: net/netlink: null-ptr-deref in netlink_dump/lock_acquire

2016-11-03 Thread Andrey Konovalov
Hi, Another report that looks related: [ INFO: possible circular locking dependency detected ] 4.9.0-rc3+ #344 Not tainted --- syz-executor/25526 is trying to acquire lock: ([ 950.351060] &table[i].mutex [] nfnl_lock+0x28/0x30 net/netfilter/nf

Re: net/netlink: null-ptr-deref in netlink_dump/lock_acquire

2016-11-02 Thread Andrey Konovalov
Hi Eric, This fixes the second report, the first one is still there. Apparently these are two separate issues. For the second one: Tested-by: Andrey Konovalov Thanks for the fix! On Thu, Nov 3, 2016 at 3:58 AM, Eric Dumazet wrote: > On Thu, 2016-11-03 at 03:36 +0100, Andrey Konovalov wrote: >

Re: net/netlink: null-ptr-deref in netlink_dump/lock_acquire

2016-11-02 Thread Eric Dumazet
On Thu, 2016-11-03 at 03:36 +0100, Andrey Konovalov wrote: > On Thu, Nov 3, 2016 at 1:15 AM, Andrey Konovalov > wrote: > > On Wed, Oct 19, 2016 at 4:13 PM, Andrey Konovalov > > wrote: > >> Hi, > >> > >> I've got the following error report while running the syzkaller fuzzer: > >> > >> kasan: CON

Re: net/netlink: null-ptr-deref in netlink_dump/lock_acquire

2016-11-02 Thread Andrey Konovalov
On Thu, Nov 3, 2016 at 1:15 AM, Andrey Konovalov wrote: > On Wed, Oct 19, 2016 at 4:13 PM, Andrey Konovalov > wrote: >> Hi, >> >> I've got the following error report while running the syzkaller fuzzer: >> >> kasan: CONFIG_KASAN_INLINE enabled >> kasan: GPF could be caused by NULL-ptr deref or us

Re: net/netlink: null-ptr-deref in netlink_dump/lock_acquire

2016-11-02 Thread Andrey Konovalov
On Wed, Oct 19, 2016 at 4:13 PM, Andrey Konovalov wrote: > Hi, > > I've got the following error report while running the syzkaller fuzzer: > > kasan: CONFIG_KASAN_INLINE enabled > kasan: GPF could be caused by NULL-ptr deref or user memory access > general protection fault: [#1] SMP KASAN > M

net/netlink: null-ptr-deref in netlink_dump/lock_acquire

2016-10-19 Thread Andrey Konovalov
Hi, I've got the following error report while running the syzkaller fuzzer: kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: [#1] SMP KASAN Modules linked in: CPU: 1 PID: 3933 Comm: syz-executor Not tainted 4.9.0-