Bug#1093093: lttng-modules-dkms: module fials to build for Linux 6.13: error: 'struct file' has no member named 'f_count'

[Andreas Beckmann]

Package: lttng-modules-dkms
Version: 2.13.16-1
Severity: important

Hi,

lttng-modules-dkms fails to build a module for Linux 6.13 in
experimental:

DKMS make.log for lttng-modules-2.13.16 for kernel 6.13-rc6-amd64 (x86_64)
Tue Jan 14 22:28:57 UTC 2025
make: Entering directory '/usr/src/linux-headers-6.13-rc6-amd64'
make[1]: Entering directory '/var/lib/dkms/lttng-modules/2.13.16/build'
  CC [M]  src/lttng-ring-buffer-client-discard.o
  CC [M]  src/lttng-ring-buffer-client-overwrite.o
  CC [M]  src/lttng-ring-buffer-metadata-client.o
  CC [M]  src/lttng-ring-buffer-client-mmap-discard.o
  CC [M]  src/lttng-ring-buffer-client-mmap-overwrite.o
  CC [M]  src/lttng-ring-buffer-metadata-mmap-client.o
  CC [M]  src/lttng-ring-buffer-event-notifier-client.o
  CC [M]  src/lttng-counter-client-percpu-32-modular.o
  CC [M]  src/lttng-counter-client-percpu-64-modular.o
  CC [M]  src/lttng-clock.o
  CC [M]  src/lib/msgpack/msgpack.o
  CC [M]  src/lttng-events.o
  CC [M]  src/lttng-abi.o
  CC [M]  src/lttng-string-utils.o
  CC [M]  src/lttng-probes.o
  CC [M]  src/lttng-context.o
src/lttng-events.c: In function 'lttng_session_list_tracker_ids':
src/lttng-events.c:1951:57: error: 'struct file' has no member named 'f_count'
 1951 |         if (!atomic_long_add_unless(&session->priv->file->f_count, 1, 
LONG_MAX)) {
      |                                                         ^~
src/lttng-events.c:1967:45: error: 'struct file' has no member named 'f_count'
 1967 |         atomic_long_dec(&session->priv->file->f_count);
      |                                             ^~
src/lttng-abi.c: In function 'lttng_abi_create_channel':
src/lttng-abi.c:546:50: error: 'struct file' has no member named 'f_count'
  546 |         if (!atomic_long_add_unless(&session_file->f_count, 1, 
LONG_MAX)) {
      |                                                  ^~
src/lttng-abi.c:571:38: error: 'struct file' has no member named 'f_count'
  571 |         atomic_long_dec(&session_file->f_count);
      |                                      ^~
  CC [M]  src/lttng-context-pid.o
src/lttng-abi.c: In function 'lttng_abi_open_event_notifier_group_stream':
src/lttng-abi.c:1743:48: error: 'struct file' has no member named 'f_count'
 1743 |         if (!atomic_long_add_unless(&notif_file->f_count, 1, LONG_MAX)) 
{
      |                                                ^~
src/lttng-abi.c:1758:36: error: 'struct file' has no member named 'f_count'
 1758 |         atomic_long_dec(&notif_file->f_count);
      |                                    ^~
src/lttng-abi.c: In function 'lttng_abi_create_event':
src/lttng-abi.c:1884:50: error: 'struct file' has no member named 'f_count'
 1884 |         if (!atomic_long_add_unless(&channel_file->f_count, 1, 
LONG_MAX)) {
      |                                                  ^~
src/lttng-abi.c:1950:38: error: 'struct file' has no member named 'f_count'
 1950 |         atomic_long_dec(&channel_file->f_count);
      |                                      ^~
src/lttng-abi.c: In function 'lttng_abi_create_event_notifier':
src/lttng-abi.c:2112:63: error: 'struct file' has no member named 'f_count'
 2112 |         if 
(!atomic_long_add_unless(&event_notifier_group_file->f_count, 1, LONG_MAX)) {
      |                                                               ^~
src/lttng-abi.c:2187:51: error: 'struct file' has no member named 'f_count'
 2187 |         atomic_long_dec(&event_notifier_group_file->f_count);
      |                                                   ^~
src/lttng-abi.c: In function 
'lttng_abi_event_notifier_group_create_error_counter':
src/lttng-abi.c:2260:63: error: 'struct file' has no member named 'f_count'
 2260 |         if 
(!atomic_long_add_unless(&event_notifier_group_file->f_count, 1, LONG_MAX)) {
      |                                                               ^~
src/lttng-abi.c:2292:51: error: 'struct file' has no member named 'f_count'
 2292 |         atomic_long_dec(&event_notifier_group_file->f_count);
      |                                                   ^~
make[4]: *** 
[/usr/src/linux-headers-6.13-rc6-common/scripts/Makefile.build:199: 
src/lttng-abi.o] Error 1
make[4]: *** Waiting for unfinished jobs....
make[4]: *** 
[/usr/src/linux-headers-6.13-rc6-common/scripts/Makefile.build:199: 
src/lttng-events.o] Error 1
make[3]: *** 
[/usr/src/linux-headers-6.13-rc6-common/scripts/Makefile.build:445: src] Error 2
make[2]: *** [/usr/src/linux-headers-6.13-rc6-common/Makefile:2013: .] Error 2
make[1]: *** [/usr/src/linux-headers-6.13-rc6-common/Makefile:263: __sub-make] 
Error 2
make[1]: Leaving directory '/var/lib/dkms/lttng-modules/2.13.16/build'
make: *** [/usr/src/linux-headers-6.13-rc6-common/Makefile:263: __sub-make] 
Error 2
make: Leaving directory '/usr/src/linux-headers-6.13-rc6-amd64'

Andreas