linux-kernel - Re: undefined reference to `__aeabi_uldivmod' after 25c13324d03d ("IB/mlx5: Add steering SW ICM device memory type")

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Message-ID: <20190515050331.GC5225@mtr-leonro.mtl.com>
Date:   Wed, 15 May 2019 05:03:33 +0000
From:   Leon Romanovsky <leonro@...lanox.com>
To:     Jason Gunthorpe <jgg@...pe.ca>
CC:     Nathan Chancellor <natechancellor@...il.com>,
        "fengguang.wu@...el.com" <fengguang.wu@...el.com>,
        "kbuild@...org" <kbuild@...org>,
        Ariel Levkovich <lariel@...lanox.com>,
        Eli Cohen <eli@...lanox.com>, Mark Bloch <markb@...lanox.com>,
        Doug Ledford <dledford@...hat.com>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: undefined reference to `__aeabi_uldivmod' after 25c13324d03d
 ("IB/mlx5: Add steering SW ICM device memory type")

On Tue, May 14, 2019 at 09:32:02PM -0300, Jason Gunthorpe wrote:
> On Tue, May 14, 2019 at 12:45:10PM -0700, Nathan Chancellor wrote:
> > Hi all,
> >
> > I checked the RDMA mailing list and trees and I haven't seen this
> > reported/fixed yet (forgive me if it has) but when building for arm32
> > with multi_v7_defconfig and the following configs (distilled from
> > allyesconfig):
> >
> > CONFIG_INFINIBAND=y
> > CONFIG_INFINIBAND_ON_DEMAND_PAGING=y
> > CONFIG_INFINIBAND_USER_ACCESS=y
> > CONFIG_MLX5_CORE=y
> > CONFIG_MLX5_INFINIBAND=y
> >
> > The following link time errors occur:
> >
> > arm-linux-gnueabi-ld: drivers/infiniband/hw/mlx5/main.o: in function `mlx5_ib_alloc_dm':
> > main.c:(.text+0x60c): undefined reference to `__aeabi_uldivmod'
> > arm-linux-gnueabi-ld: drivers/infiniband/hw/mlx5/cmd.o: in function `mlx5_cmd_alloc_sw_icm':
> > cmd.c:(.text+0x6d4): undefined reference to `__aeabi_uldivmod'
> > arm-linux-gnueabi-ld: drivers/infiniband/hw/mlx5/cmd.o: in function `mlx5_cmd_dealloc_sw_icm':
> > cmd.c:(.text+0x9ec): undefined reference to `__aeabi_uldivmod'
>
> Fengguang, I'm surprised that 0-day didn't report this earlier..

I got many successful emails after I pushed this patch to 0-day testing.

>
> and come to think of it, I haven't seen a success email from 0-day for
> the rdma trees in some time - is it still working?
>
> Thanks,
> Jason