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SubjectRe: net build error
On Sun, Sep 23, 2018 at 9:42 AM, syzbot
<syzbot+a72ba31e3224309179d4@syzkaller.appspotmail.com> wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: 474ff2600889 net-ethtool: ETHTOOL_GUFO did not and should ..
> git tree: net
> console output: https://syzkaller.appspot.com/x/log.txt?x=164c4059400000
> kernel config: https://syzkaller.appspot.com/x/.config?x=5fa12be50bca08d8
> dashboard link: https://syzkaller.appspot.com/bug?extid=a72ba31e3224309179d4
> compiler: gcc (GCC) 8.0.1 20180413 (experimental)
>
> Unfortunately, I don't have any reproducer for this crash yet.
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+a72ba31e3224309179d4@syzkaller.appspotmail.com

+netdev

The root cause:


net/rds/ib.o:(.data..percpu..shared_aligned+0x0): multiple definition
of `rds_ib_stats'
net/rds/rdma_transport.o:(.data..percpu..shared_aligned+0x0): first defined here
net/rds/ib_cm.o:(.data..percpu..shared_aligned+0x0): multiple
definition of `rds_ib_stats'
net/rds/rdma_transport.o:/syzkaller/managers/upstream-net-this-kasan-gce/kernel/net/rds/rdma_transport.c:284:
first defined here
net/rds/ib_recv.o:(.data..percpu..shared_aligned+0x0): multiple
definition of `rds_ib_stats'
net/rds/rdma_transport.o:/syzkaller/managers/upstream-net-this-kasan-gce/kernel/net/rds/rdma_transport.c:284:
first defined here
net/rds/ib_ring.o:(.data..percpu..shared_aligned+0x0): multiple
definition of `rds_ib_stats'
net/rds/rdma_transport.o:/syzkaller/managers/upstream-net-this-kasan-gce/kernel/net/rds/rdma_transport.c:284:
first defined here
net/rds/ib_send.o:(.data..percpu..shared_aligned+0x0): multiple
definition of `rds_ib_stats'
net/rds/rdma_transport.o:/syzkaller/managers/upstream-net-this-kasan-gce/kernel/net/rds/rdma_transport.c:284:
first defined here
net/rds/ib_stats.o:(.data..percpu..shared_aligned+0x0): multiple
definition of `rds_ib_stats'
net/rds/rdma_transport.o:/syzkaller/managers/upstream-net-this-kasan-gce/kernel/net/rds/rdma_transport.c:284:
first defined here
net/rds/ib_sysctl.o:(.data..percpu..shared_aligned+0x0): multiple
definition of `rds_ib_stats'
net/rds/rdma_transport.o:/syzkaller/managers/upstream-net-this-kasan-gce/kernel/net/rds/rdma_transport.c:284:
first defined here
net/rds/ib_rdma.o:(.data..percpu..shared_aligned+0x0): multiple
definition of `rds_ib_stats'
net/rds/rdma_transport.o:/syzkaller/managers/upstream-net-this-kasan-gce/kernel/net/rds/rdma_transport.c:284:
first defined here
net/rds/ib_fmr.o:(.data..percpu..shared_aligned+0x0): multiple
definition of `rds_ib_stats'
net/rds/rdma_transport.o:/syzkaller/managers/upstream-net-this-kasan-gce/kernel/net/rds/rdma_transport.c:284:
first defined here
net/rds/ib_frmr.o:(.data..percpu..shared_aligned+0x0): multiple
definition of `rds_ib_stats'
net/rds/rdma_transport.o:/syzkaller/managers/upstream-net-this-kasan-gce/kernel/net/rds/rdma_transport.c:284:
first defined here
Makefile:1030: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1


> ---
> This bug is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@googlegroups.com.
>
> syzbot will keep track of this bug report. See:
> https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with
> syzbot.

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