Re: [kbuild-all] Re: [PATCH 1/3] Add TX sending hardware timestamp.

[Philip Li]

On Thu, Dec 10, 2020 at 12:41:32PM +0000, Geva, Erez wrote:
> 
> On 10/12/2020 04:11, kernel test robot wrote:
> > Hi Erez,
> > 
> > Thank you for the patch! Yet something to improve:
> > 
> Thanks for the robot,
> as we rarely use clang for kernel. It is very helpful.
> 
> > [auto build test ERROR on b65054597872ce3aefbc6a666385eabdf9e288da]
> > 
> > url:    https://github.com/0day-ci/linux/commits/Erez-Geva/Add-sending-TX-hardware-timestamp-for-TC-ETF-Qdisc/20201210-000521
> I can not find this commit
> 
> > base:    b65054597872ce3aefbc6a666385eabdf9e288da
> > config: mips-randconfig-r026-20201209 (attached as .config)
> > compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 1968804ac726e7674d5de22bc2204b45857da344)
> However the clang in 
> https://download.01.org/0day-ci/cross-package/clang-latest/clang.tar.xz  is version 11
Sorry that these are issues at our side, including the branch/commit missing.
The push to download.01.org failed and did not really work, we will look for
recovering them.

> 
> > reproduce (this is a W=1 build):
> >          wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> Your make cross script tries to download the clang every time.
> Please separate the download (which is ~400 MB and 2 GB after open) from the compilation.
Hi Erez, thanks for your feedback, we will improve the reproduction
side per these suggestions.

> 
> Please use "wget" follow your own instructions in this email.
> 
> >          chmod +x ~/bin/make.cross
> >          # install mips cross compiling tool for clang build
> >          # apt-get install binutils-mips-linux-gnu
> >          # https://github.com/0day-ci/linux/commit/8a8f634bc74db16dc551cfcf3b63c1183f98eaac
> >          git remote add linux-review https://github.com/0day-ci/linux
> >          git fetch --no-tags linux-review Erez-Geva/Add-sending-TX-hardware-timestamp-for-TC-ETF-Qdisc/20201210-000521
> This branch is absent
> 
> >          git checkout 8a8f634bc74db16dc551cfcf3b63c1183f98eaac
> This commit as well
> 
> >          # save the attached .config to linux build tree
> >          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips
> > 
> I use Debian 10.7.
> I usually compile with GCC. I have not see any errors.
> 
> When I use clang 11 from download.01.org I get a crash right away.
> Please add a proper instructions how to use clang on Debian or provide 
> a Docker container with updated clang for testing.
> 
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kernel test robot <lkp@xxxxxxxxx>
> > 
> > All errors (new ones prefixed by >>):
> > 
> >>> net/core/sock.c:2383:7: error: use of undeclared identifier 'SCM_HW_TXTIME'; did you mean 'SOCK_HW_TXTIME'?
> >             case SCM_HW_TXTIME:
> >                  ^~~~~~~~~~~~~
> >                  SOCK_HW_TXTIME
> >     include/net/sock.h:862:2: note: 'SOCK_HW_TXTIME' declared here
> >             SOCK_HW_TXTIME,
> >             ^
> >     1 error generated.
> > 
> > vim +2383 net/core/sock.c
> > 
> >    2351	
> >    2352	int __sock_cmsg_send(struct sock *sk, struct msghdr *msg, struct cmsghdr *cmsg,
> >    2353			     struct sockcm_cookie *sockc)
> >    2354	{
> >    2355		u32 tsflags;
> >    2356	
> >    2357		switch (cmsg->cmsg_type) {
> >    2358		case SO_MARK:
> >    2359			if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN))
> >    2360				return -EPERM;
> >    2361			if (cmsg->cmsg_len != CMSG_LEN(sizeof(u32)))
> >    2362				return -EINVAL;
> >    2363			sockc->mark = *(u32 *)CMSG_DATA(cmsg);
> >    2364			break;
> >    2365		case SO_TIMESTAMPING_OLD:
> >    2366			if (cmsg->cmsg_len != CMSG_LEN(sizeof(u32)))
> >    2367				return -EINVAL;
> >    2368	
> >    2369			tsflags = *(u32 *)CMSG_DATA(cmsg);
> >    2370			if (tsflags & ~SOF_TIMESTAMPING_TX_RECORD_MASK)
> >    2371				return -EINVAL;
> >    2372	
> >    2373			sockc->tsflags &= ~SOF_TIMESTAMPING_TX_RECORD_MASK;
> >    2374			sockc->tsflags |= tsflags;
> >    2375			break;
> >    2376		case SCM_TXTIME:
> >    2377			if (!sock_flag(sk, SOCK_TXTIME))
> >    2378				return -EINVAL;
> >    2379			if (cmsg->cmsg_len != CMSG_LEN(sizeof(u64)))
> >    2380				return -EINVAL;
> >    2381			sockc->transmit_time = get_unaligned((u64 *)CMSG_DATA(cmsg));
> >    2382			break;
> >> 2383		case SCM_HW_TXTIME:
> >    2384			if (!sock_flag(sk, SOCK_HW_TXTIME))
> >    2385				return -EINVAL;
> >    2386			if (cmsg->cmsg_len != CMSG_LEN(sizeof(u64)))
> >    2387				return -EINVAL;
> >    2388			sockc->transmit_hw_time = get_unaligned((u64 *)CMSG_DATA(cmsg));
> >    2389			break;
> >    2390		/* SCM_RIGHTS and SCM_CREDENTIALS are semantically in SOL_UNIX. */
> >    2391		case SCM_RIGHTS:
> >    2392		case SCM_CREDENTIALS:
> >    2393			break;
> >    2394		default:
> >    2395			return -EINVAL;
> >    2396		}
> >    2397		return 0;
> >    2398	}
> >    2399	EXPORT_SYMBOL(__sock_cmsg_send);
> >    2400	
> > 
> > ---
> > 0-DAY CI Kernel Test Service, Intel Corporation
> > https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
> > 
> 
> Please improve the robot, so we can comply and properly support clang compilation.
Got it, we will keep improving the bot.

> 
> Thanks
>    Erez
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