net/tcp: warning in tcp_recvmsg

2016-11-07 Thread Andrey Konovalov
Hi, I've got the following error report while running the syzkaller fuzzer: [ cut here ] WARNING: CPU: 1 PID: 9957 at net/ipv4/tcp.c:1766 tcp_recvmsg+0x19d7/0x26e0 net/ipv4/tcp.c:1765 Modules linked in: CPU: 1 PID: 9957 Comm: syz-executor Not tainted 4.9.0-rc4+ #352 Hardwa

Re: WARNING in tcp_recvmsg

2015-11-26 Thread Dmitry Vyukov
On Wed, Nov 25, 2015 at 8:37 PM, Eric Dumazet wrote: > On Wed, Nov 25, 2015 at 8:36 AM, Dmitry Vyukov wrote: >> Hello, >> >> The following program triggers WARNING in tcp_recvmsg: >> >> // autogenerated by syzkaller (http://github.com/google/syzkaller) >

Re: WARNING in tcp_recvmsg

2015-11-25 Thread Eric Dumazet
On Wed, Nov 25, 2015 at 8:36 AM, Dmitry Vyukov wrote: > Hello, > > The following program triggers WARNING in tcp_recvmsg: > > // autogenerated by syzkaller (http://github.com/google/syzkaller) > #include > #include > #include > #include > #include > #include

WARNING in tcp_recvmsg

2015-11-25 Thread Dmitry Vyukov
Hello, The following program triggers WARNING in tcp_recvmsg: // autogenerated by syzkaller (http://github.com/google/syzkaller) #include #include #include #include #include #include #include #include int fd = -1; void *thr0(void *arg) { memcpy((void*)0x20003000, "\xf2\x2