Public bug reported:

[ Impact ]

DKMS make.log for ipt-netflow-2.6 for kernel 6.17.0-7-generic (x86_64)
Wed Dec  3 22:38:35 UTC 2025
./gen_compat_def > compat_def.h
Test symbol xt_family linux/netfilter_ipv4/ip_tables.h  declared
Test struct timeval linux/ktime.h  undeclared
Test struct proc_ops linux/proc_fs.h  declared
Test symbol synchronize_sched linux/rcupdate.h  undeclared
Test symbol nf_bridge_info_get linux/netfilter_bridge.h  declared
Test struct vlan_dev_priv linux/if_vlan.h  declared
Test member nf_ct_event_notifier.ct_event net/netfilter/nf_conntrack_ecache.h  
declared
Test file exists 
/lib/modules/6.17.0-7-generic/build/include/asm-generic/unaligned.h
Test file exists 
/lib/modules/6.17.0-7-generic/build/include/linux/unaligned/generic.h
Test file exists /lib/modules/6.17.0-7-generic/build/include/linux/unaligned.h
Test symbol put_unaligned_be24 linux/unaligned.h  declared
Compiling 2.6 for kernel 6.17.0-7-generic
make -C /lib/modules/6.17.0-7-generic/build 
M=/var/lib/dkms/ipt-netflow/2.6/build modules
make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make 
rule.
make[1]: Entering directory '/usr/src/linux-headers-6.17.0-7-generic'
make[2]: Entering directory '/var/lib/dkms/ipt-netflow/2.6/build'
warning: the compiler differs from the one used to build the kernel
  The kernel was built by: x86_64-linux-gnu-gcc-13 (Ubuntu 
13.3.0-6ubuntu2~24.04) 13.3.0
  You are using:           gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
  CC [M]  ipt_NETFLOW.o
In file included from ipt_NETFLOW.c:81:
compat.h:227:15: warning: no previous prototype for ‘timeval_to_jiffies’ 
[-Wmissing-prototypes]
  227 | unsigned long timeval_to_jiffies(const struct timeval *tv)
      |               ^~~~~~~~~~~~~~~~~~
compat.h:392:20: warning: no previous prototype for ‘compat_hex_to_bin’ 
[-Wmissing-prototypes]
  392 | #define hex_to_bin compat_hex_to_bin
      |                    ^~~~~~~~~~~~~~~~~
compat.h:394:5: note: in expansion of macro ‘hex_to_bin’
  394 | int hex_to_bin(char ch)
      |     ^~~~~~~~~~
compat.h:724:20: warning: no previous prototype for ‘strtoul’ 
[-Wmissing-prototypes]
  724 | unsigned long long strtoul(const char *cp, char **endp, unsigned int 
base)
      |                    ^~~~~~~
ipt_NETFLOW.c:100:4: warning: #warning "Requested physdev is not compiled." 
[-Wcpp]
  100 | #  warning "Requested physdev is not compiled."
      |    ^~~~~~~
ipt_NETFLOW.c: In function ‘nf_seq_show’:
ipt_NETFLOW.c:766:60: warning: format ‘%lu’ expects argument of type ‘long 
unsigned int’, but argument 3 has type ‘s64’ {aka ‘long long int’} [-Wformat=]
  766 |                         seq_printf(seq, " Flows selected %lu, discarded 
%lu.",
      |                                                          ~~^
      |                                                            |
      |                                                            long 
unsigned int
      |                                                          %llu
  767 |                             atomic64_read(&flows_selected),
      |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                             |
      |                             s64 {aka long long int}
ipt_NETFLOW.c:766:75: warning: format ‘%lu’ expects argument of type ‘long 
unsigned int’, but argument 4 has type ‘s64’ {aka ‘long long int’} [-Wformat=]
  766 |                         seq_printf(seq, " Flows selected %lu, discarded 
%lu.",
      |                                                                         
~~^
      |                                                                         
  |
      |                                                                         
  long unsigned int
      |                                                                         
%llu
  767 |                             atomic64_read(&flows_selected),
  768 |                             atomic64_read(&flows_observed) - 
atomic64_read(&flows_selected));
      |                             
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                                                            |
      |                                                            s64 {aka 
long long int}
ipt_NETFLOW.c:770:60: warning: format ‘%lu’ expects argument of type ‘long 
unsigned int’, but argument 3 has type ‘s64’ {aka ‘long long int’} [-Wformat=]
  770 |                         seq_printf(seq, " Flows selected %lu.", 
atomic64_read(&flows_selected));
      |                                                          ~~^    
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                                                            |    |
      |                                                            |    s64 
{aka long long int}
      |                                                            long 
unsigned int
      |                                                          %llu
ipt_NETFLOW.c: In function ‘ipt_netflow_init’:
ipt_NETFLOW.c:5820:9: error: implicit declaration of function ‘del_timer_sync’; 
did you mean ‘dev_mc_sync’? [-Werror=implicit-function-declaration]
 5820 |         del_timer_sync(&rate_timer);
      |         ^~~~~~~~~~~~~~
      |         dev_mc_sync
cc1: some warnings being treated as errors
make[4]: *** 
[/usr/src/linux-headers-6.17.0-7-generic/scripts/Makefile.build:287: 
ipt_NETFLOW.o] Error 1
make[3]: *** [/usr/src/linux-headers-6.17.0-7-generic/Makefile:2016: .] Error 2
make[2]: *** [/usr/src/linux-headers-6.17.0-7-generic/Makefile:248: __sub-make] 
Error 2
make[2]: Leaving directory '/var/lib/dkms/ipt-netflow/2.6/build'
make[1]: *** [Makefile:248: __sub-make] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-6.17.0-7-generic'
make: *** [Makefile:27: ipt_NETFLOW.ko] Error 2

[ Test case ]

Install the latest linux-6.17 kernel on Noble:

$ sudo add-apt-repository ppa:canonical-kernel-team/ppa3
$ sudo apt install linux-generic-hwe-24.04-edge

Install iptables-netflow-dkms:

$ sudo apt install iptables-netflow-dkms

Module built and installed successfully.

Load the module:

$ sudo modprobe ipt_NETFLOW

Module loaded successfully.

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

[ Fix ]

Apply patch from iptables-netflow-dkms Questing release enabling 6.17

* debian/patches/rename-to-timer_delete_sync-in-Linux-6.15.patch

Also changing build dependency pkg-config => pkgconf

[ Regression potential ]

We may experience regressions in systems that are using the iptables-
netflow drivers, especially with kernels >= 6.8 kernel.

** Affects: iptables-netflow (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: iptables-netflow (Ubuntu Noble)
     Importance: Undecided
         Status: New

** Also affects: iptables-netflow (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Description changed:

  [ Impact ]
  
  DKMS make.log for ipt-netflow-2.6 for kernel 6.17.0-7-generic (x86_64)
  Wed Dec  3 22:38:35 UTC 2025
  ./gen_compat_def > compat_def.h
  Test symbol xt_family linux/netfilter_ipv4/ip_tables.h  declared
  Test struct timeval linux/ktime.h  undeclared
  Test struct proc_ops linux/proc_fs.h  declared
  Test symbol synchronize_sched linux/rcupdate.h  undeclared
  Test symbol nf_bridge_info_get linux/netfilter_bridge.h  declared
  Test struct vlan_dev_priv linux/if_vlan.h  declared
  Test member nf_ct_event_notifier.ct_event net/netfilter/nf_conntrack_ecache.h 
 declared
  Test file exists 
/lib/modules/6.17.0-7-generic/build/include/asm-generic/unaligned.h
  Test file exists 
/lib/modules/6.17.0-7-generic/build/include/linux/unaligned/generic.h
  Test file exists /lib/modules/6.17.0-7-generic/build/include/linux/unaligned.h
  Test symbol put_unaligned_be24 linux/unaligned.h  declared
  Compiling 2.6 for kernel 6.17.0-7-generic
  make -C /lib/modules/6.17.0-7-generic/build 
M=/var/lib/dkms/ipt-netflow/2.6/build modules
  make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make 
rule.
  make[1]: Entering directory '/usr/src/linux-headers-6.17.0-7-generic'
  make[2]: Entering directory '/var/lib/dkms/ipt-netflow/2.6/build'
  warning: the compiler differs from the one used to build the kernel
-   The kernel was built by: x86_64-linux-gnu-gcc-13 (Ubuntu 
13.3.0-6ubuntu2~24.04) 13.3.0
-   You are using:           gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
-   CC [M]  ipt_NETFLOW.o
+   The kernel was built by: x86_64-linux-gnu-gcc-13 (Ubuntu 
13.3.0-6ubuntu2~24.04) 13.3.0
+   You are using:           gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
+   CC [M]  ipt_NETFLOW.o
  In file included from ipt_NETFLOW.c:81:
  compat.h:227:15: warning: no previous prototype for ‘timeval_to_jiffies’ 
[-Wmissing-prototypes]
-   227 | unsigned long timeval_to_jiffies(const struct timeval *tv)
-       |               ^~~~~~~~~~~~~~~~~~
+   227 | unsigned long timeval_to_jiffies(const struct timeval *tv)
+       |               ^~~~~~~~~~~~~~~~~~
  compat.h:392:20: warning: no previous prototype for ‘compat_hex_to_bin’ 
[-Wmissing-prototypes]
-   392 | #define hex_to_bin compat_hex_to_bin
-       |                    ^~~~~~~~~~~~~~~~~
+   392 | #define hex_to_bin compat_hex_to_bin
+       |                    ^~~~~~~~~~~~~~~~~
  compat.h:394:5: note: in expansion of macro ‘hex_to_bin’
-   394 | int hex_to_bin(char ch)
-       |     ^~~~~~~~~~
+   394 | int hex_to_bin(char ch)
+       |     ^~~~~~~~~~
  compat.h:724:20: warning: no previous prototype for ‘strtoul’ 
[-Wmissing-prototypes]
-   724 | unsigned long long strtoul(const char *cp, char **endp, unsigned int 
base)
-       |                    ^~~~~~~
+   724 | unsigned long long strtoul(const char *cp, char **endp, unsigned int 
base)
+       |                    ^~~~~~~
  ipt_NETFLOW.c:100:4: warning: #warning "Requested physdev is not compiled." 
[-Wcpp]
-   100 | #  warning "Requested physdev is not compiled."
-       |    ^~~~~~~
+   100 | #  warning "Requested physdev is not compiled."
+       |    ^~~~~~~
  ipt_NETFLOW.c: In function ‘nf_seq_show’:
  ipt_NETFLOW.c:766:60: warning: format ‘%lu’ expects argument of type ‘long 
unsigned int’, but argument 3 has type ‘s64’ {aka ‘long long int’} [-Wformat=]
-   766 |                         seq_printf(seq, " Flows selected %lu, 
discarded %lu.",
-       |                                                          ~~^
-       |                                                            |
-       |                                                            long 
unsigned int
-       |                                                          %llu
-   767 |                             atomic64_read(&flows_selected),
-       |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
-       |                             |
-       |                             s64 {aka long long int}
+   766 |                         seq_printf(seq, " Flows selected %lu, 
discarded %lu.",
+       |                                                          ~~^
+       |                                                            |
+       |                                                            long 
unsigned int
+       |                                                          %llu
+   767 |                             atomic64_read(&flows_selected),
+       |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+       |                             |
+       |                             s64 {aka long long int}
  ipt_NETFLOW.c:766:75: warning: format ‘%lu’ expects argument of type ‘long 
unsigned int’, but argument 4 has type ‘s64’ {aka ‘long long int’} [-Wformat=]
-   766 |                         seq_printf(seq, " Flows selected %lu, 
discarded %lu.",
-       |                                                                       
  ~~^
-       |                                                                       
    |
-       |                                                                       
    long unsigned int
-       |                                                                       
  %llu
-   767 |                             atomic64_read(&flows_selected),
-   768 |                             atomic64_read(&flows_observed) - 
atomic64_read(&flows_selected));
-       |                             
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-       |                                                            |
-       |                                                            s64 {aka 
long long int}
+   766 |                         seq_printf(seq, " Flows selected %lu, 
discarded %lu.",
+       |                                                                       
  ~~^
+       |                                                                       
    |
+       |                                                                       
    long unsigned int
+       |                                                                       
  %llu
+   767 |                             atomic64_read(&flows_selected),
+   768 |                             atomic64_read(&flows_observed) - 
atomic64_read(&flows_selected));
+       |                             
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+       |                                                            |
+       |                                                            s64 {aka 
long long int}
  ipt_NETFLOW.c:770:60: warning: format ‘%lu’ expects argument of type ‘long 
unsigned int’, but argument 3 has type ‘s64’ {aka ‘long long int’} [-Wformat=]
-   770 |                         seq_printf(seq, " Flows selected %lu.", 
atomic64_read(&flows_selected));
-       |                                                          ~~^    
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-       |                                                            |    |
-       |                                                            |    s64 
{aka long long int}
-       |                                                            long 
unsigned int
-       |                                                          %llu
+   770 |                         seq_printf(seq, " Flows selected %lu.", 
atomic64_read(&flows_selected));
+       |                                                          ~~^    
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+       |                                                            |    |
+       |                                                            |    s64 
{aka long long int}
+       |                                                            long 
unsigned int
+       |                                                          %llu
  ipt_NETFLOW.c: In function ‘ipt_netflow_init’:
  ipt_NETFLOW.c:5820:9: error: implicit declaration of function 
‘del_timer_sync’; did you mean ‘dev_mc_sync’? 
[-Werror=implicit-function-declaration]
-  5820 |         del_timer_sync(&rate_timer);
-       |         ^~~~~~~~~~~~~~
-       |         dev_mc_sync
+  5820 |         del_timer_sync(&rate_timer);
+       |         ^~~~~~~~~~~~~~
+       |         dev_mc_sync
  cc1: some warnings being treated as errors
  make[4]: *** 
[/usr/src/linux-headers-6.17.0-7-generic/scripts/Makefile.build:287: 
ipt_NETFLOW.o] Error 1
  make[3]: *** [/usr/src/linux-headers-6.17.0-7-generic/Makefile:2016: .] Error 
2
  make[2]: *** [/usr/src/linux-headers-6.17.0-7-generic/Makefile:248: 
__sub-make] Error 2
  make[2]: Leaving directory '/var/lib/dkms/ipt-netflow/2.6/build'
  make[1]: *** [Makefile:248: __sub-make] Error 2
  make[1]: Leaving directory '/usr/src/linux-headers-6.17.0-7-generic'
  make: *** [Makefile:27: ipt_NETFLOW.ko] Error 2
  
  [ Test case ]
  
  Install the latest linux-6.17 kernel on Noble:
  
  $ sudo add-apt-repository ppa:canonical-kernel-team/ppa3
  $ sudo apt install linux-generic-hwe-24.04-edge
  
  Install iptables-netflow-dkms:
  
  $ sudo apt install iptables-netflow-dkms
  
+ Module built and installed successfully.
+ 
  Load the module:
  
  $ sudo modprobe ipt_NETFLOW
+ 
+ Module loaded successfully.
  
  The same procedure can be repeated on linux-6.8 to test for possible
  regressions.
  
  [ Fix ]
  
- Apply patch from evdi-dkms Questing release enabling 6.17
+ Apply patch from iptables-netflow-dkms Questing release enabling 6.17
  
- * debian/patches/
+ * debian/patches/rename-to-timer_delete_sync-in-Linux-6.15.patch
  
  [ Regression potential ]
  
  We may experience regressions in systems that are using the iptables-
  netflow drivers, especially with kernels >= 6.8 kernel.

** Description changed:

  [ Impact ]
  
  DKMS make.log for ipt-netflow-2.6 for kernel 6.17.0-7-generic (x86_64)
  Wed Dec  3 22:38:35 UTC 2025
  ./gen_compat_def > compat_def.h
  Test symbol xt_family linux/netfilter_ipv4/ip_tables.h  declared
  Test struct timeval linux/ktime.h  undeclared
  Test struct proc_ops linux/proc_fs.h  declared
  Test symbol synchronize_sched linux/rcupdate.h  undeclared
  Test symbol nf_bridge_info_get linux/netfilter_bridge.h  declared
  Test struct vlan_dev_priv linux/if_vlan.h  declared
  Test member nf_ct_event_notifier.ct_event net/netfilter/nf_conntrack_ecache.h 
 declared
  Test file exists 
/lib/modules/6.17.0-7-generic/build/include/asm-generic/unaligned.h
  Test file exists 
/lib/modules/6.17.0-7-generic/build/include/linux/unaligned/generic.h
  Test file exists /lib/modules/6.17.0-7-generic/build/include/linux/unaligned.h
  Test symbol put_unaligned_be24 linux/unaligned.h  declared
  Compiling 2.6 for kernel 6.17.0-7-generic
  make -C /lib/modules/6.17.0-7-generic/build 
M=/var/lib/dkms/ipt-netflow/2.6/build modules
  make[1]: warning: jobserver unavailable: using -j1.  Add '+' to parent make 
rule.
  make[1]: Entering directory '/usr/src/linux-headers-6.17.0-7-generic'
  make[2]: Entering directory '/var/lib/dkms/ipt-netflow/2.6/build'
  warning: the compiler differs from the one used to build the kernel
    The kernel was built by: x86_64-linux-gnu-gcc-13 (Ubuntu 
13.3.0-6ubuntu2~24.04) 13.3.0
    You are using:           gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
    CC [M]  ipt_NETFLOW.o
  In file included from ipt_NETFLOW.c:81:
  compat.h:227:15: warning: no previous prototype for ‘timeval_to_jiffies’ 
[-Wmissing-prototypes]
    227 | unsigned long timeval_to_jiffies(const struct timeval *tv)
        |               ^~~~~~~~~~~~~~~~~~
  compat.h:392:20: warning: no previous prototype for ‘compat_hex_to_bin’ 
[-Wmissing-prototypes]
    392 | #define hex_to_bin compat_hex_to_bin
        |                    ^~~~~~~~~~~~~~~~~
  compat.h:394:5: note: in expansion of macro ‘hex_to_bin’
    394 | int hex_to_bin(char ch)
        |     ^~~~~~~~~~
  compat.h:724:20: warning: no previous prototype for ‘strtoul’ 
[-Wmissing-prototypes]
    724 | unsigned long long strtoul(const char *cp, char **endp, unsigned int 
base)
        |                    ^~~~~~~
  ipt_NETFLOW.c:100:4: warning: #warning "Requested physdev is not compiled." 
[-Wcpp]
    100 | #  warning "Requested physdev is not compiled."
        |    ^~~~~~~
  ipt_NETFLOW.c: In function ‘nf_seq_show’:
  ipt_NETFLOW.c:766:60: warning: format ‘%lu’ expects argument of type ‘long 
unsigned int’, but argument 3 has type ‘s64’ {aka ‘long long int’} [-Wformat=]
    766 |                         seq_printf(seq, " Flows selected %lu, 
discarded %lu.",
        |                                                          ~~^
        |                                                            |
        |                                                            long 
unsigned int
        |                                                          %llu
    767 |                             atomic64_read(&flows_selected),
        |                             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        |                             |
        |                             s64 {aka long long int}
  ipt_NETFLOW.c:766:75: warning: format ‘%lu’ expects argument of type ‘long 
unsigned int’, but argument 4 has type ‘s64’ {aka ‘long long int’} [-Wformat=]
    766 |                         seq_printf(seq, " Flows selected %lu, 
discarded %lu.",
        |                                                                       
  ~~^
        |                                                                       
    |
        |                                                                       
    long unsigned int
        |                                                                       
  %llu
    767 |                             atomic64_read(&flows_selected),
    768 |                             atomic64_read(&flows_observed) - 
atomic64_read(&flows_selected));
        |                             
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        |                                                            |
        |                                                            s64 {aka 
long long int}
  ipt_NETFLOW.c:770:60: warning: format ‘%lu’ expects argument of type ‘long 
unsigned int’, but argument 3 has type ‘s64’ {aka ‘long long int’} [-Wformat=]
    770 |                         seq_printf(seq, " Flows selected %lu.", 
atomic64_read(&flows_selected));
        |                                                          ~~^    
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        |                                                            |    |
        |                                                            |    s64 
{aka long long int}
        |                                                            long 
unsigned int
        |                                                          %llu
  ipt_NETFLOW.c: In function ‘ipt_netflow_init’:
  ipt_NETFLOW.c:5820:9: error: implicit declaration of function 
‘del_timer_sync’; did you mean ‘dev_mc_sync’? 
[-Werror=implicit-function-declaration]
   5820 |         del_timer_sync(&rate_timer);
        |         ^~~~~~~~~~~~~~
        |         dev_mc_sync
  cc1: some warnings being treated as errors
  make[4]: *** 
[/usr/src/linux-headers-6.17.0-7-generic/scripts/Makefile.build:287: 
ipt_NETFLOW.o] Error 1
  make[3]: *** [/usr/src/linux-headers-6.17.0-7-generic/Makefile:2016: .] Error 
2
  make[2]: *** [/usr/src/linux-headers-6.17.0-7-generic/Makefile:248: 
__sub-make] Error 2
  make[2]: Leaving directory '/var/lib/dkms/ipt-netflow/2.6/build'
  make[1]: *** [Makefile:248: __sub-make] Error 2
  make[1]: Leaving directory '/usr/src/linux-headers-6.17.0-7-generic'
  make: *** [Makefile:27: ipt_NETFLOW.ko] Error 2
  
  [ Test case ]
  
  Install the latest linux-6.17 kernel on Noble:
  
  $ sudo add-apt-repository ppa:canonical-kernel-team/ppa3
  $ sudo apt install linux-generic-hwe-24.04-edge
  
  Install iptables-netflow-dkms:
  
  $ sudo apt install iptables-netflow-dkms
  
  Module built and installed successfully.
  
  Load the module:
  
  $ sudo modprobe ipt_NETFLOW
  
  Module loaded successfully.
  
  The same procedure can be repeated on linux-6.8 to test for possible
  regressions.
  
  [ Fix ]
  
  Apply patch from iptables-netflow-dkms Questing release enabling 6.17
  
  * debian/patches/rename-to-timer_delete_sync-in-Linux-6.15.patch
  
+ Also changing build dependency pkg-config => pkgconf
+ 
  [ Regression potential ]
  
  We may experience regressions in systems that are using the iptables-
  netflow drivers, especially with kernels >= 6.8 kernel.

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2133829

Title:
  iptables-netflow-dkms FTBS in Noble with the linux-6.17-hwe kernel

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https://bugs.launchpad.net/ubuntu/+source/iptables-netflow/+bug/2133829/+subscriptions


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