Re: net: BUG in unix_notinflight

2017-03-10 Thread Cong Wang
On Tue, Mar 7, 2017 at 2:23 PM, Nikolay Borisov wrote: > >>> >>> >>> New report from linux-next/c0b7b2b33bd17f7155956d0338ce92615da686c9 >>> >>> [ cut here ] >>> kernel BUG at net/unix/garbage.c:149! >>> invalid opcode: [#1] SMP KASAN >>> Dumping ftrace buffer: >>>

Re: net: BUG in unix_notinflight

2017-03-07 Thread Cong Wang
On Tue, Mar 7, 2017 at 12:37 AM, Dmitry Vyukov wrote: > On Mon, Mar 6, 2017 at 11:34 PM, Cong Wang wrote: >> The problem here is there is no lock protecting concurrent unix_detach_fds() >> even though unix_notinflight() is already serialized, if we call >> unix_notinflight() >> twice on the same

Re: net: BUG in unix_notinflight

2017-03-07 Thread Willy Tarreau
On Wed, Mar 08, 2017 at 12:23:56AM +0200, Nikolay Borisov wrote: > > >> > >> > >> New report from linux-next/c0b7b2b33bd17f7155956d0338ce92615da686c9 > >> > >> [ cut here ] > >> kernel BUG at net/unix/garbage.c:149! > >> invalid opcode: [#1] SMP KASAN > >> Dumping ftra

Re: net: BUG in unix_notinflight

2017-03-07 Thread Nikolay Borisov
>> >> >> New report from linux-next/c0b7b2b33bd17f7155956d0338ce92615da686c9 >> >> [ cut here ] >> kernel BUG at net/unix/garbage.c:149! >> invalid opcode: [#1] SMP KASAN >> Dumping ftrace buffer: >>(ftrace buffer empty) >> Modules linked in: >> CPU: 0 PID: 1806 Co

Re: net: BUG in unix_notinflight

2017-03-07 Thread Dmitry Vyukov
On Mon, Mar 6, 2017 at 11:34 PM, Cong Wang wrote: > On Mon, Mar 6, 2017 at 2:40 AM, Dmitry Vyukov wrote: >> Now with a nice single-threaded C reproducer! > > Excellent... > >> >> // autogenerated by syzkaller (http://github.com/google/syzkaller) >> #define _GNU_SOURCE >> #include >> #include >>

Re: net: BUG in unix_notinflight

2017-03-06 Thread Cong Wang
On Mon, Mar 6, 2017 at 2:40 AM, Dmitry Vyukov wrote: > Now with a nice single-threaded C reproducer! Excellent... > > // autogenerated by syzkaller (http://github.com/google/syzkaller) > #define _GNU_SOURCE > #include > #include > #include > #include > #include > #include > #include > #in

Re: net: BUG in unix_notinflight

2017-03-06 Thread Dmitry Vyukov
On Sat, Nov 26, 2016 at 7:05 PM, Dmitry Vyukov wrote: > Hello, > > I am hitting the following BUG while running syzkaller fuzzer: > > kernel BUG at net/unix/garbage.c:149! > invalid opcode: [#1] SMP DEBUG_PAGEALLOC KASAN > Dumping ftrace buffer: >(ftrace buffer empty) > Modules linked in:

net: BUG in unix_notinflight

2016-11-26 Thread Dmitry Vyukov
Hello, I am hitting the following BUG while running syzkaller fuzzer: kernel BUG at net/unix/garbage.c:149! invalid opcode: [#1] SMP DEBUG_PAGEALLOC KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 0 PID: 23491 Comm: syz-executor Not tainted 4.9.0-rc5+ #41 Hardwa