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Date: Thu, 27 Jul 2017 13:21:10 -0400
From: Jaron Kent-Dobias <jaron-wg@kent-dobias.com>
To: wireguard@lists.zx2c4.com
Subject: errors building 0.0.20170706 and later with Linux 3.14.0
Message-ID: <20170727172110.GB28775@lore.localdomain>
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Hello,

I cannot install the wireguard module with dkms on one of my machines
for all tagged versions past 0.0.20170628. It runs linux 3.14.0, and
complains that kvmalloc, kvzalloc, and kvfree have been redefined in
wireguard's compat.h. The full logfile for 0.0.20170706 is attached.

Thanks in advance for any help,
Jaron


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Content-Disposition: attachment; filename="make.log"
Content-Transfer-Encoding: quoted-printable

DKMS make.log for wireguard-0.0.20170706 for kernel 3.14.0-26-ARCH (armv7l)
Mon Jul 17 20:53:41 EDT 2017
make: Entering directory '/usr/lib/modules/3.14.0-26-ARCH/build'
  LD      /var/lib/dkms/wireguard/0.0.20170706/build/built-in.o
  CC [M]  /var/lib/dkms/wireguard/0.0.20170706/build/main.o
  CC [M]  /var/lib/dkms/wireguard/0.0.20170706/build/noise.o
  CC [M]  /var/lib/dkms/wireguard/0.0.20170706/build/device.o
  CC [M]  /var/lib/dkms/wireguard/0.0.20170706/build/peer.o
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:144:0: warning: =
"netdev_alloc_pcpu_stats" redefined
 #define netdev_alloc_pcpu_stats(type)     \
=20
In file included from include/net/ip_tunnels.h:5:0,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/netdevice.h:1795:0: note: this is the location of the previou=
s definition
 #define netdev_alloc_pcpu_stats(type)    \
=20
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:307:21: error: r=
edefinition of =E2=80=98kvmalloc=E2=80=99
 static inline void *kvmalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from include/linux/scatterlist.h:6:0,
                 from include/linux/dmaengine.h:28,
                 from include/linux/skbuff.h:31,
                 from include/linux/ip.h:20,
                 from include/linux/if_tunnel.h:4,
                 from include/net/ip_tunnels.h:4,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/mm.h:379:21: note: previous definition of =E2=80=98kvmalloc=
=E2=80=99 was here
 static inline void *kvmalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:321:21: error: r=
edefinition of =E2=80=98kvzalloc=E2=80=99
 static inline void *kvzalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from include/linux/scatterlist.h:6:0,
                 from include/linux/dmaengine.h:28,
                 from include/linux/skbuff.h:31,
                 from include/linux/ip.h:20,
                 from include/linux/if_tunnel.h:4,
                 from include/net/ip_tunnels.h:4,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/mm.h:387:21: note: previous definition of =E2=80=98kvzalloc=
=E2=80=99 was here
 static inline void *kvzalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:329:20: error: s=
tatic declaration of =E2=80=98kvfree=E2=80=99 follows non-static declaration
 static inline void kvfree(const void *addr)
                    ^~~~~~
In file included from include/linux/scatterlist.h:6:0,
                 from include/linux/dmaengine.h:28,
                 from include/linux/skbuff.h:31,
                 from include/linux/ip.h:20,
                 from include/linux/if_tunnel.h:4,
                 from include/net/ip_tunnels.h:4,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/mm.h:400:13: note: previous declaration of =E2=80=98kvfree=E2=
=80=99 was here
 extern void kvfree(const void *addr);
             ^~~~~~
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:144:0: warning: =
"netdev_alloc_pcpu_stats" redefined
 #define netdev_alloc_pcpu_stats(type)     \
=20
In file included from include/net/ip_tunnels.h:5:0,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/netdevice.h:1795:0: note: this is the location of the previou=
s definition
 #define netdev_alloc_pcpu_stats(type)    \
=20
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:307:21: error: r=
edefinition of =E2=80=98kvmalloc=E2=80=99
 static inline void *kvmalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from include/linux/scatterlist.h:6:0,
                 from include/linux/dmaengine.h:28,
                 from include/linux/skbuff.h:31,
                 from include/linux/ip.h:20,
                 from include/linux/if_tunnel.h:4,
                 from include/net/ip_tunnels.h:4,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/mm.h:379:21: note: previous definition of =E2=80=98kvmalloc=
=E2=80=99 was here
 static inline void *kvmalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:321:21: error: r=
edefinition of =E2=80=98kvzalloc=E2=80=99
 static inline void *kvzalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from include/linux/scatterlist.h:6:0,
                 from include/linux/dmaengine.h:28,
                 from include/linux/skbuff.h:31,
                 from include/linux/ip.h:20,
                 from include/linux/if_tunnel.h:4,
                 from include/net/ip_tunnels.h:4,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/mm.h:387:21: note: previous definition of =E2=80=98kvzalloc=
=E2=80=99 was here
 static inline void *kvzalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:329:20: error: s=
tatic declaration of =E2=80=98kvfree=E2=80=99 follows non-static declaration
 static inline void kvfree(const void *addr)
                    ^~~~~~
In file included from include/linux/scatterlist.h:6:0,
                 from include/linux/dmaengine.h:28,
                 from include/linux/skbuff.h:31,
                 from include/linux/ip.h:20,
                 from include/linux/if_tunnel.h:4,
                 from include/net/ip_tunnels.h:4,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/mm.h:400:13: note: previous declaration of =E2=80=98kvfree=E2=
=80=99 was here
 extern void kvfree(const void *addr);
             ^~~~~~
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:144:0: warning: =
"netdev_alloc_pcpu_stats" redefined
 #define netdev_alloc_pcpu_stats(type)     \
=20
In file included from include/net/ip_tunnels.h:5:0,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/netdevice.h:1795:0: note: this is the location of the previou=
s definition
 #define netdev_alloc_pcpu_stats(type)    \
=20
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:307:21: error: r=
edefinition of =E2=80=98kvmalloc=E2=80=99
 static inline void *kvmalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from include/linux/scatterlist.h:6:0,
                 from include/linux/dmaengine.h:28,
                 from include/linux/skbuff.h:31,
                 from include/linux/ip.h:20,
                 from include/linux/if_tunnel.h:4,
                 from include/net/ip_tunnels.h:4,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/mm.h:379:21: note: previous definition of =E2=80=98kvmalloc=
=E2=80=99 was here
 static inline void *kvmalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:321:21: error: r=
edefinition of =E2=80=98kvzalloc=E2=80=99
 static inline void *kvzalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from include/linux/scatterlist.h:6:0,
                 from include/linux/dmaengine.h:28,
                 from include/linux/skbuff.h:31,
                 from include/linux/ip.h:20,
                 from include/linux/if_tunnel.h:4,
                 from include/net/ip_tunnels.h:4,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/mm.h:387:21: note: previous definition of =E2=80=98kvzalloc=
=E2=80=99 was here
 static inline void *kvzalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:329:20: error: s=
tatic declaration of =E2=80=98kvfree=E2=80=99 follows non-static declaration
 static inline void kvfree(const void *addr)
                    ^~~~~~
In file included from include/linux/scatterlist.h:6:0,
                 from include/linux/dmaengine.h:28,
                 from include/linux/skbuff.h:31,
                 from include/linux/ip.h:20,
                 from include/linux/if_tunnel.h:4,
                 from include/net/ip_tunnels.h:4,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/mm.h:400:13: note: previous declaration of =E2=80=98kvfree=E2=
=80=99 was here
 extern void kvfree(const void *addr);
             ^~~~~~
make[1]: *** [scripts/Makefile.build:308: /var/lib/dkms/wireguard/0.0.20170=
706/build/main.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: *** [scripts/Makefile.build:308: /var/lib/dkms/wireguard/0.0.20170=
706/build/device.o] Error 1
make[1]: *** [scripts/Makefile.build:308: /var/lib/dkms/wireguard/0.0.20170=
706/build/noise.o] Error 1
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:144:0: warning: =
"netdev_alloc_pcpu_stats" redefined
 #define netdev_alloc_pcpu_stats(type)     \
=20
In file included from include/net/ip_tunnels.h:5:0,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/netdevice.h:1795:0: note: this is the location of the previou=
s definition
 #define netdev_alloc_pcpu_stats(type)    \
=20
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:307:21: error: r=
edefinition of =E2=80=98kvmalloc=E2=80=99
 static inline void *kvmalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from include/linux/scatterlist.h:6:0,
                 from include/linux/dmaengine.h:28,
                 from include/linux/skbuff.h:31,
                 from include/linux/ip.h:20,
                 from include/linux/if_tunnel.h:4,
                 from include/net/ip_tunnels.h:4,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/mm.h:379:21: note: previous definition of =E2=80=98kvmalloc=
=E2=80=99 was here
 static inline void *kvmalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:321:21: error: r=
edefinition of =E2=80=98kvzalloc=E2=80=99
 static inline void *kvzalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from include/linux/scatterlist.h:6:0,
                 from include/linux/dmaengine.h:28,
                 from include/linux/skbuff.h:31,
                 from include/linux/ip.h:20,
                 from include/linux/if_tunnel.h:4,
                 from include/net/ip_tunnels.h:4,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/mm.h:387:21: note: previous definition of =E2=80=98kvzalloc=
=E2=80=99 was here
 static inline void *kvzalloc(size_t size, gfp_t flags)
                     ^~~~~~~~
In file included from <command-line>:0:0:
/var/lib/dkms/wireguard/0.0.20170706/build/compat/compat.h:329:20: error: s=
tatic declaration of =E2=80=98kvfree=E2=80=99 follows non-static declaration
 static inline void kvfree(const void *addr)
                    ^~~~~~
In file included from include/linux/scatterlist.h:6:0,
                 from include/linux/dmaengine.h:28,
                 from include/linux/skbuff.h:31,
                 from include/linux/ip.h:20,
                 from include/linux/if_tunnel.h:4,
                 from include/net/ip_tunnels.h:4,
                 from /var/lib/dkms/wireguard/0.0.20170706/build/compat/com=
pat.h:71,
                 from <command-line>:0:
include/linux/mm.h:400:13: note: previous declaration of =E2=80=98kvfree=E2=
=80=99 was here
 extern void kvfree(const void *addr);
             ^~~~~~
make[1]: *** [scripts/Makefile.build:308: /var/lib/dkms/wireguard/0.0.20170=
706/build/peer.o] Error 1
make: *** [Makefile:1298: _module_/var/lib/dkms/wireguard/0.0.20170706/buil=
d] Error 2
make: Leaving directory '/usr/lib/modules/3.14.0-26-ARCH/build'

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