[Bug 2092168] [NEW] rapiddisk-dkms FTBS in Noble with linux-6.11-hwe kernel

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Ubuntu Foundations Team Bug Bot (crichton):

[ Impact ]

rapiddisk-dkms does not compile from source in Noble with kernel 6.11:

/var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk-cache.c: In function ‘dm_io_async_bvec’:
/var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk-cache.c:198:16: error: too few arguments to function ‘dm_io’
  198 |         return dm_io(&iorq, num_regions, where, NULL);
      |                ^~~~~
In file included from /var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk-cache.c:46:
./include/linux/dm-io.h:82:5: note: declared here
   82 | int dm_io(struct dm_io_request *io_req, unsigned int num_regions,
      |     ^~~~~

/var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk-cache.c: In function ‘cache_ctr’:
/var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk-cache.c:1022:59: error: ‘struct block_device’ has no member named ‘bd_inode’
 1022 |                 dmc->size = to_sector(dmc->cache_dev->bdev->bd_inode->i_size);
      |                                                           ^~
/var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk-cache.c:1058:50: error: ‘struct block_device’ has no member named ‘bd_inode’
 1058 |         dev_size = to_sector(dmc->cache_dev->bdev->bd_inode->i_size);
      |                                                  ^~

/var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk.c: In function ‘attach_device’:
/var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk.c:809:61: error: macro "blk_alloc_disk" requires 2 arguments, but only 1 given
  809 |         disk = rdsk->rdsk_disk = blk_alloc_disk(NUMA_NO_NODE);
      |                                                             ^
In file included from /var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk.c:30:
./include/linux/blkdev.h:821: note: macro "blk_alloc_disk" defined here
  821 | #define blk_alloc_disk(lim, node_id)                                    \
      |
      
/var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk.c:809:34: error: ‘blk_alloc_disk’ undeclared (first use in this function)
  809 |         disk = rdsk->rdsk_disk = blk_alloc_disk(NUMA_NO_NODE);
      |                                  ^~~~~~~~~~~~~~
/var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk.c:809:34: note: each undeclared identifier is reported only once for each function it appears in

/var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk.c:816:61: error: macro "blk_alloc_disk" requires 2 arguments, but only 1 given
  816 |         disk = rdsk->rdsk_disk = blk_alloc_disk(NUMA_NO_NODE);
      |                                                             ^
./include/linux/blkdev.h:821: note: macro "blk_alloc_disk" defined here
  821 | #define blk_alloc_disk(lim, node_id)                                    \
      | 

/var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk-cache.c: In function ‘dm_io_async_bvec’:
/var/lib/dkms/rapiddisk-dkms/9.1.0/build/rapiddisk-cache.c:199:1: error: control reaches end of non-void function [-Werror=return-type]
  199 | }
      | ^

[ Test case ]

Install the latest linux-6.11 kernel on Noble:

$ sudo add-apt-repository ppa:canonical-kernel-team/ppa
$ sudo apt update
$ sudo apt install linux-image-6.11.0-12-generic \
                   linux-modules-6.11.0-12-generic \
                   linux-modules-extra-6.11.0-12-generic \
                   linux-headers-6.11.0-12-generic

Install rapiddisk-dkms:

$ sudo apt install rapiddisk-dkms

Load the module:

$ sudo modprobe rapiddisk
$ sudo modprobe rapiddisk-cache

The same procedure should be repeated on linux-6.8 to test for possible
regressions.

[ Fix ]

Backport the package from Oracular to properly support the new 6.11
kernel ABI.

[ Regression potential ]

We may experience regressions in systems that are using rapiddisk with a
kernel >= 6.8.

** Affects: rapiddisk (Ubuntu)
     Importance: Undecided
     Assignee: Massimiliano Pellizzer (mpellizzer)
         Status: In Progress

** Affects: rapiddisk (Ubuntu Noble)
     Importance: Undecided
     Assignee: Massimiliano Pellizzer (mpellizzer)
         Status: In Progress


** Tags: patch
-- 
rapiddisk-dkms FTBS in Noble with linux-6.11-hwe kernel
https://bugs.launchpad.net/bugs/2092168
You received this bug notification because you are a member of Ubuntu Sponsors, which is subscribed to the bug report.