Re: [PATCH net-next] tcp: fix hang in tcp_sendpage_locked()

2017-08-25 Thread David Miller
From: Eric Dumazet Date: Fri, 25 Aug 2017 06:27:05 -0700 > From: Eric Dumazet > > syszkaller got a hang in tcp stack, related to a bug in > tcp_sendpage_locked() > > root@syzkaller:~# cat /proc/3059/stack > [] __lock_sock+0x1dc/0x2f0 > [] lock_sock_nested+0xf3/0x110 > [] tcp_sendmsg+0x21/0x50

[PATCH net-next] tcp: fix hang in tcp_sendpage_locked()

2017-08-25 Thread Eric Dumazet
From: Eric Dumazet syszkaller got a hang in tcp stack, related to a bug in tcp_sendpage_locked() root@syzkaller:~# cat /proc/3059/stack [] __lock_sock+0x1dc/0x2f0 [] lock_sock_nested+0xf3/0x110 [] tcp_sendmsg+0x21/0x50 [] inet_sendmsg+0x11f/0x5e0 [] sock_sendmsg+0xca/0x110 [] kernel_sendmsg+0x47