Re: [PATCH v3 net] dccp/tcp: fix ireq->opt races

2017-10-20 Thread kbuild test robot
Hi Eric, [auto build test WARNING on net/master] url: https://github.com/0day-ci/linux/commits/Eric-Dumazet/dccp-tcp-fix-ireq-opt-races/20171021-034024 config: powerpc-ppc6xx_defconfig (attached as .config) compiler: powerpc-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce:

Re: [PATCH v3 net] dccp/tcp: fix ireq->opt races

2017-10-20 Thread Eric Dumazet
On Sat, 2017-10-21 at 05:26 +0800, kbuild test robot wrote: > Hi Eric, > > [auto build test WARNING on net/master] Obsolete report. v4 was sent few hours ago ;)

Re: [PATCH v3 net] dccp/tcp: fix ireq->opt races

2017-10-20 Thread kbuild test robot
Hi Eric, [auto build test WARNING on net/master] url: https://github.com/0day-ci/linux/commits/Eric-Dumazet/dccp-tcp-fix-ireq-opt-races/20171021-034024 config: alpha-allmodconfig (attached as .config) compiler: alpha-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 reproduce: wget

Re: [PATCH v3 net] dccp/tcp: fix ireq->opt races

2017-10-20 Thread Eric Dumazet
On Fri, 2017-10-20 at 07:18 +0100, David Miller wrote: > From: David Miller > Date: Fri, 20 Oct 2017 07:04:58 +0100 (WEST) > > > Much better, applied and queued up for -stable. > > I take that back. > > Please build test your changes more thoroughly. Arg, sorry for

Re: [PATCH v3 net] dccp/tcp: fix ireq->opt races

2017-10-20 Thread David Miller
From: David Miller Date: Fri, 20 Oct 2017 07:04:58 +0100 (WEST) > Much better, applied and queued up for -stable. I take that back. Please build test your changes more thoroughly. In file included from ./arch/x86/include/asm/atomic.h:7:0, from

Re: [PATCH v3 net] dccp/tcp: fix ireq->opt races

2017-10-20 Thread David Miller
From: Eric Dumazet Date: Thu, 19 Oct 2017 15:24:49 -0700 > From: Eric Dumazet > > syzkaller found another bug in DCCP/TCP stacks [1] > > For the reasons explained in commit ce1050089c96 ("tcp/dccp: fix > ireq->pktopts race"), we need to make sure

[PATCH v3 net] dccp/tcp: fix ireq->opt races

2017-10-19 Thread Eric Dumazet
From: Eric Dumazet syzkaller found another bug in DCCP/TCP stacks [1] For the reasons explained in commit ce1050089c96 ("tcp/dccp: fix ireq->pktopts race"), we need to make sure we do not access ireq->opt unless we own the request sock. [1] BUG: KASAN: use-after-free in