RE: [PATCH 4.19 000/422] 4.19.85-stable review

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> From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Sent: 19 November 2019 18:16
> 
> On Tue, Nov 19, 2019 at 10:00:02AM -0800, Guenter Roeck wrote:
> > On Tue, Nov 19, 2019 at 05:52:07PM +0100, Greg Kroah-Hartman wrote:
> > > On Tue, Nov 19, 2019 at 04:38:06PM +0000, Chris Paterson wrote:
> > > > > From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> > > > > Sent: 19 November 2019 15:49
> > > > >
> > > > > On Tue, Nov 19, 2019 at 02:44:12PM +0000, Chris Paterson wrote:
> > > > > > Hi Greg,
> > > > > >
> > > > > > > From: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> > > > > > > Sent: 19 November 2019 12:29
> > > > > > >
> > > > > > > On Tue, Nov 19, 2019 at 08:54:25AM +0000, Chris Paterson wrote:
> > > > > > > > Hello Greg, all,
> > > > > > > >
> > > > > > > > > From: stable-owner@xxxxxxxxxxxxxxx <stable-
> owner@xxxxxxxxxxxxxxx>
> > > > > On
> > > > > > > > > Behalf Of Greg Kroah-Hartman
> > > > > > > > > Sent: 19 November 2019 05:13
> > > > > > > > >
> > > > > > > > > This is the start of the stable review cycle for the 4.19.85 release.
> > > > > > > > > There are 422 patches in this series, all will be posted as a
> response
> > > > > > > > > to this one.  If anyone has any issues with these being applied,
> please
> > > > > > > > > let me know.
> > > > > > > >
> > > > > > > > I'm seeing some build issues with module compilation with this
> release
> > > > > > > (1b1960cc Linux 4.19.85-rc1), I also saw them with the previous two
> versions
> > > > > of
> > > > > > > Linux 4.19.85-rc1 (cd21ecdb and 1fd0ac64).
> > > > > > > >
> > > > > > > > Full log available on GitLab [0]. Build conf [1].
> > > > > > > > [0] https://gitlab.com/cip-playground/linux-stable-rc-ci/-
> /jobs/354591285
> > > > > > > > [1] https://gitlab.com/cip-playground/linux-stable-rc-ci/-
> > > > > > > /jobs/354591285/artifacts/file/output/4.19.85-
> > > > > > > rc1_1b1960cc7/x86/siemens_iot2000.config/config/.config
> > > > > > > >
> > > > > > > > Main error below:
> > > > > > > >
> > > > > > > > 3907   CC [M]  drivers/net/ethernet/mellanox/mlx4/main.o
> > > > > > > > 3908   LD [M]  fs/ntfs/ntfs.o
> > > > > > > > 3909   CC [M]  drivers/net/ethernet/intel/i40evf/i40e_txrx.o
> > > > > > > > 3910   CC [M]  drivers/usb/musb/musb_core.o
> > > > > > > > 3911   CC [M]  drivers/net/ethernet/nvidia/forcedeth.o
> > > > > > > > 3912   CC [M]  fs/udf/balloc.o
> > > > > > > > 3913   CC [M]  drivers/net/ethernet/intel/fm10k/fm10k_debugfs.o
> > > > > > > > 3914   CC [M]  fs/udf/dir.o
> > > > > > > > 3915   CC [M]  drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.o
> > > > > > > > 3916   CC [M]  drivers/net/ethernet/intel/i40e/i40e_ptp.o
> > > > > > > > 3917 drivers/net/ethernet/mellanox/mlx4/main.c: In function
> > > > > 'mlx4_init_one':
> > > > > > > > 3918 drivers/net/ethernet/mellanox/mlx4/main.c:3985:2: error:
> implicit
> > > > > > > declaration of function 'devlink_reload_enable'; did you mean
> > > > > > > 'devlink_region_create'? [-Werror=implicit-function-declaration]
> > > > > > > > 3919   devlink_reload_enable(devlink);
> > > > > > > > 3920   ^~~~~~~~~~~~~~~~~~~~~
> > > > > > > > 3921   devlink_region_create
> > > > > > > > 3922   CC [M]  drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.o
> > > > > > > > 3923 drivers/net/ethernet/mellanox/mlx4/main.c: In function
> > > > > > > 'mlx4_remove_one':
> > > > > > > > 3924 drivers/net/ethernet/mellanox/mlx4/main.c:4097:2: error:
> implicit
> > > > > > > declaration of function 'devlink_reload_disable'; did you mean
> > > > > > > 'devlink_region_destroy'? [-Werror=implicit-function-declaration]
> > > > > > > > 3925   devlink_reload_disable(devlink);
> > > > > > > > 3926   ^~~~~~~~~~~~~~~~~~~~~~
> > > > > > > > 3927   devlink_region_destroy
> > > > > > > > 3928   CC [M]  drivers/net/ethernet/packetengines/hamachi.o
> > > > > > > > 3929   CC [M]  fs/udf/file.o
> > > > > > > > 3930   LD [M]  drivers/net/ethernet/intel/fm10k/fm10k.o
> > > > > > > >
> > > > > > > > I haven't tried to trace the issue further yet, sorry.
> > > > > > >
> > > > > > > Any chance you can bisect this?  I don't see any obvious reason why
> this
> > > > > > > error should be happening, and it isn't showing up here :(
> > > > > >
> > > > > > Looking through the commit history, the issue seems to be related to:
> > > > > > 672cf82122be ("devlink: disallow reload operation during device
> cleanup")
> > > > > >
> > > > > > I've reverted this commit and Linux 4.19.85-rc2 (af1bb7db before
> revert) will
> > > > > build with the configuration I'm using [2].
> > > > > > I haven't looked further yet though, sorry.
> > > > > >
> > > > > > [2] https://gitlab.com/cip-project/cip-kernel/cip-kernel-
> > > > > config/raw/master/4.19.y-cip/x86/siemens_iot2000.config
> > > > >
> > > > > If you add:
> > > > > 	#include <net/devlink.h>
> > > > > to the top of drivers/net/ethernet/mellanox/mlx4/main.c, does it fix the
> > > > > issue for you?
> > > >
> > > > This is already defined:
> > > > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-
> rc.git/tree/drivers/net/ethernet/mellanox/mlx4/main.c?h=linux-4.19.y#n47
> > >
> > > Ah, ok, the issue is that CONFIG_NET_DEVLINK is not enabled, the driver
> > > now requires this.  This was resolved by adding the dependancy to the
> > > driver itself, and then just punting and always enabling it over time.
> > >
> > > We can backport part of f6b19b354d50 ("net: devlink: select NET_DEVLINK
> > > from drivers") if you want, but that feels messy.
> > >
> > > For now, if you enable that option, does it build for you?
> > >
> >
> > Selecting NET_DEVLINK manually fixes the problem, but at least for my part
> > I was unable to find a means to define the dependency in the Kconfig file.
> > I either get a recursive dependency or unmet direct dependencies.
> >
> > FWIW, reverting the devlink patch fixes the compile problem.
> 
> Ok, I've now done just that, and pushed out a -rc4.

Thanks Greg.

Linux 4.19.85-rc4 (824c9ada & d0112da1) works for me.

Kind regards, Chris

> 
> thanks,
> 
> greg k-h




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