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Date: Fri, 15 Jan 2021 21:38:05 +0800
From: kernel test robot <lkp@...el.com>
To: Stanislav Fomichev <sdf@...gle.com>, netdev@...r.kernel.org,
bpf@...r.kernel.org
Cc: kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
ast@...nel.org, daniel@...earbox.net,
Stanislav Fomichev <sdf@...gle.com>
Subject: Re: [RPC PATCH bpf-next] bpf: implement new
BPF_CGROUP_INET_SOCK_POST_CONNECT
Hi Stanislav,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on bpf-next/master]
url: https://github.com/0day-ci/linux/commits/Stanislav-Fomichev/bpf-implement-new-BPF_CGROUP_INET_SOCK_POST_CONNECT/20210115-112524
base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: powerpc64-randconfig-r021-20210115 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 5b42fd8dd4e7e29125a09a41a33af7c9cb57d144)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install powerpc64 cross compiling tool for clang build
# apt-get install binutils-powerpc64-linux-gnu
# https://github.com/0day-ci/linux/commit/342141c74fe4ece77f9d9753918a77e66d9d3316
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Stanislav-Fomichev/bpf-implement-new-BPF_CGROUP_INET_SOCK_POST_CONNECT/20210115-112524
git checkout 342141c74fe4ece77f9d9753918a77e66d9d3316
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
__do_insb
^
arch/powerpc/include/asm/io.h:556:56: note: expanded from macro '__do_insb'
#define __do_insb(p, b, n) readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from net/ipv4/af_inet.c:81:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:100:1: note: expanded from here
__do_insw
^
arch/powerpc/include/asm/io.h:557:56: note: expanded from macro '__do_insw'
#define __do_insw(p, b, n) readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from net/ipv4/af_inet.c:81:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:102:1: note: expanded from here
__do_insl
^
arch/powerpc/include/asm/io.h:558:56: note: expanded from macro '__do_insl'
#define __do_insl(p, b, n) readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from net/ipv4/af_inet.c:81:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:104:1: note: expanded from here
__do_outsb
^
arch/powerpc/include/asm/io.h:559:58: note: expanded from macro '__do_outsb'
#define __do_outsb(p, b, n) writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from net/ipv4/af_inet.c:81:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:106:1: note: expanded from here
__do_outsw
^
arch/powerpc/include/asm/io.h:560:58: note: expanded from macro '__do_outsw'
#define __do_outsw(p, b, n) writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
~~~~~~~~~~~~~~~~~~~~~^
In file included from net/ipv4/af_inet.c:81:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:10:
In file included from arch/powerpc/include/asm/hardirq.h:6:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/powerpc/include/asm/io.h:619:
arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
__do_##name al; \
^~~~~~~~~~~~~~
<scratch space>:108:1: note: expanded from here
__do_outsl
^
arch/powerpc/include/asm/io.h:561:58: note: expanded from macro '__do_outsl'
#define __do_outsl(p, b, n) writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
~~~~~~~~~~~~~~~~~~~~~^
>> net/ipv4/af_inet.c:579:9: error: implicit declaration of function 'BPF_CGROUP_RUN_PROG_INET_SOCK_POST_CONNECT_LOCKED' [-Werror,-Wimplicit-function-declaration]
err = BPF_CGROUP_RUN_PROG_INET_SOCK_POST_CONNECT_LOCKED(sk);
^
>> net/ipv4/af_inet.c:730:9: error: implicit declaration of function 'BPF_CGROUP_RUN_PROG_INET_SOCK_POST_CONNECT' [-Werror,-Wimplicit-function-declaration]
err = BPF_CGROUP_RUN_PROG_INET_SOCK_POST_CONNECT(sock->sk);
^
6 warnings and 2 errors generated.
vim +/BPF_CGROUP_RUN_PROG_INET_SOCK_POST_CONNECT_LOCKED +579 net/ipv4/af_inet.c
557
558 int inet_dgram_connect(struct socket *sock, struct sockaddr *uaddr,
559 int addr_len, int flags)
560 {
561 struct sock *sk = sock->sk;
562 int err;
563
564 if (addr_len < sizeof(uaddr->sa_family))
565 return -EINVAL;
566 if (uaddr->sa_family == AF_UNSPEC)
567 return sk->sk_prot->disconnect(sk, flags);
568
569 if (BPF_CGROUP_PRE_CONNECT_ENABLED(sk)) {
570 err = sk->sk_prot->pre_connect(sk, uaddr, addr_len);
571 if (err)
572 return err;
573 }
574
575 if (!inet_sk(sk)->inet_num && inet_autobind(sk))
576 return -EAGAIN;
577 err = sk->sk_prot->connect(sk, uaddr, addr_len);
578 if (!err)
> 579 err = BPF_CGROUP_RUN_PROG_INET_SOCK_POST_CONNECT_LOCKED(sk);
580 return err;
581 }
582 EXPORT_SYMBOL(inet_dgram_connect);
583
584 static long inet_wait_for_connect(struct sock *sk, long timeo, int writebias)
585 {
586 DEFINE_WAIT_FUNC(wait, woken_wake_function);
587
588 add_wait_queue(sk_sleep(sk), &wait);
589 sk->sk_write_pending += writebias;
590
591 /* Basic assumption: if someone sets sk->sk_err, he _must_
592 * change state of the socket from TCP_SYN_*.
593 * Connect() does not allow to get error notifications
594 * without closing the socket.
595 */
596 while ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) {
597 release_sock(sk);
598 timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo);
599 lock_sock(sk);
600 if (signal_pending(current) || !timeo)
601 break;
602 }
603 remove_wait_queue(sk_sleep(sk), &wait);
604 sk->sk_write_pending -= writebias;
605 return timeo;
606 }
607
608 /*
609 * Connect to a remote host. There is regrettably still a little
610 * TCP 'magic' in here.
611 */
612 int __inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
613 int addr_len, int flags, int is_sendmsg)
614 {
615 struct sock *sk = sock->sk;
616 int err;
617 long timeo;
618
619 /*
620 * uaddr can be NULL and addr_len can be 0 if:
621 * sk is a TCP fastopen active socket and
622 * TCP_FASTOPEN_CONNECT sockopt is set and
623 * we already have a valid cookie for this socket.
624 * In this case, user can call write() after connect().
625 * write() will invoke tcp_sendmsg_fastopen() which calls
626 * __inet_stream_connect().
627 */
628 if (uaddr) {
629 if (addr_len < sizeof(uaddr->sa_family))
630 return -EINVAL;
631
632 if (uaddr->sa_family == AF_UNSPEC) {
633 err = sk->sk_prot->disconnect(sk, flags);
634 sock->state = err ? SS_DISCONNECTING : SS_UNCONNECTED;
635 goto out;
636 }
637 }
638
639 switch (sock->state) {
640 default:
641 err = -EINVAL;
642 goto out;
643 case SS_CONNECTED:
644 err = -EISCONN;
645 goto out;
646 case SS_CONNECTING:
647 if (inet_sk(sk)->defer_connect)
648 err = is_sendmsg ? -EINPROGRESS : -EISCONN;
649 else
650 err = -EALREADY;
651 /* Fall out of switch with err, set for this state */
652 break;
653 case SS_UNCONNECTED:
654 err = -EISCONN;
655 if (sk->sk_state != TCP_CLOSE)
656 goto out;
657
658 if (BPF_CGROUP_PRE_CONNECT_ENABLED(sk)) {
659 err = sk->sk_prot->pre_connect(sk, uaddr, addr_len);
660 if (err)
661 goto out;
662 }
663
664 err = sk->sk_prot->connect(sk, uaddr, addr_len);
665 if (err < 0)
666 goto out;
667
668 sock->state = SS_CONNECTING;
669
670 if (!err && inet_sk(sk)->defer_connect)
671 goto out;
672
673 /* Just entered SS_CONNECTING state; the only
674 * difference is that return value in non-blocking
675 * case is EINPROGRESS, rather than EALREADY.
676 */
677 err = -EINPROGRESS;
678 break;
679 }
680
681 timeo = sock_sndtimeo(sk, flags & O_NONBLOCK);
682
683 if ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) {
684 int writebias = (sk->sk_protocol == IPPROTO_TCP) &&
685 tcp_sk(sk)->fastopen_req &&
686 tcp_sk(sk)->fastopen_req->data ? 1 : 0;
687
688 /* Error code is set above */
689 if (!timeo || !inet_wait_for_connect(sk, timeo, writebias))
690 goto out;
691
692 err = sock_intr_errno(timeo);
693 if (signal_pending(current))
694 goto out;
695 }
696
697 /* Connection was closed by RST, timeout, ICMP error
698 * or another process disconnected us.
699 */
700 if (sk->sk_state == TCP_CLOSE)
701 goto sock_error;
702
703 /* sk->sk_err may be not zero now, if RECVERR was ordered by user
704 * and error was received after socket entered established state.
705 * Hence, it is handled normally after connect() return successfully.
706 */
707
708 sock->state = SS_CONNECTED;
709 err = 0;
710 out:
711 return err;
712
713 sock_error:
714 err = sock_error(sk) ? : -ECONNABORTED;
715 sock->state = SS_UNCONNECTED;
716 if (sk->sk_prot->disconnect(sk, flags))
717 sock->state = SS_DISCONNECTING;
718 goto out;
719 }
720 EXPORT_SYMBOL(__inet_stream_connect);
721
722 int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
723 int addr_len, int flags)
724 {
725 int err;
726
727 lock_sock(sock->sk);
728 err = __inet_stream_connect(sock, uaddr, addr_len, flags, 0);
729 if (!err)
> 730 err = BPF_CGROUP_RUN_PROG_INET_SOCK_POST_CONNECT(sock->sk);
731 release_sock(sock->sk);
732 return err;
733 }
734 EXPORT_SYMBOL(inet_stream_connect);
735
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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