[Pkg-xen-devel] Bug#867703: blktap-dkms: module FTBFS for Linux 4.11

[Andreas Beckmann]

Package: blktap-dkms
Version: 2.0.93-0.8
Severity: serious
Tags: sid buster

Hi,

blktap-dkms fails to build a module for Linux 4.11:

  CC [M]  /var/lib/dkms/blktap/2.0.93/build/device.o
In file included from /var/lib/dkms/blktap/2.0.93/build/linux-blktap.h:66:0,
                 from /var/lib/dkms/blktap/2.0.93/build/blktap.h:33,
                 from /var/lib/dkms/blktap/2.0.93/build/ring.c:38:
/var/lib/dkms/blktap/2.0.93/build/linux-blktap.h:119:24: warning: variably modified 'pending' at file scope
        sizeof(((struct blktap_sring *)0)->ring[0])))
                        ^
/usr/src/linux-headers-4.11.0-1-common/include/xen/interface/io/ring.h:15:59: note: in definition of macro '__RD2'
 #define __RD2(_x)  (((_x) & 0x00000002) ? 0x2         : ((_x) & 0x1))
                                                           ^~
/usr/src/linux-headers-4.11.0-1-common/include/xen/interface/io/ring.h:17:66: note: in expansion of macro '__RD4'
 #define __RD8(_x)  (((_x) & 0x000000f0) ? __RD4((_x)>>4)<<4    : __RD4(_x))
                                                                  ^~~~~
/usr/src/linux-headers-4.11.0-1-common/include/xen/interface/io/ring.h:18:66: note: in expansion of macro '__RD8'
 #define __RD16(_x) (((_x) & 0x0000ff00) ? __RD8((_x)>>8)<<8    : __RD8(_x))
                                                                  ^~~~~
/usr/src/linux-headers-4.11.0-1-common/include/xen/interface/io/ring.h:19:66: note: in expansion of macro '__RD16'
 #define __RD32(_x) (((_x) & 0xffff0000) ? __RD16((_x)>>16)<<16 : __RD16(_x))
                                                                  ^~~~~~
/var/lib/dkms/blktap/2.0.93/build/linux-blktap.h:117:8: note: in expansion of macro '__RD32'
  ((int)__RD32((BLKTAP_PAGE_SIZE -    \
        ^~~~~~
/var/lib/dkms/blktap/2.0.93/build/blktap.h:77:41: note: in expansion of macro 'BLKTAP_RING_SIZE'
  struct blktap_request         *pending[BLKTAP_RING_SIZE];
                                         ^~~~~~~~~~~~~~~~
/var/lib/dkms/blktap/2.0.93/build/ring.c:187:14: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
  .fault    = blktap_ring_fault,
              ^~~~~~~~~~~~~~~~~
/var/lib/dkms/blktap/2.0.93/build/ring.c:187:14: note: (near initialization for 'blktap_ring_vm_operations.fault')

Andreas
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