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Miller" , Jakub Kicinski , Paolo Abeni Cc: oe-kbuild-all@lists.linux.dev, Simon Horman , netdev@vger.kernel.org, eric.dumazet@gmail.com, Eric Dumazet , syzbot+d6fa74e3f19d6ee01e3a@syzkaller.appspotmail.com, James Chapman , Guillaume Nault Subject: Re: [PATCH v2 net] l2tp: fix tunnel and session refcount leak on seq_file release Message-ID: <202608201604.4Zj72hcA-lkp@intel.com> References: <20260810141125.1176545-1-edumazet@google.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260810141125.1176545-1-edumazet@google.com> Hi Eric, kernel test robot noticed the following build errors: [auto build test ERROR on horms-ipvs/master] [cannot apply to net/main net-next/main linus/master v7.2 next-20260819] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Eric-Dumazet/l2tp-fix-tunnel-and-session-refcount-leak-on-seq_file-release/20260810-141125 base: https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs.git master patch link: https://lore.kernel.org/r/20260810141125.1176545-1-edumazet%40google.com patch subject: [PATCH v2 net] l2tp: fix tunnel and session refcount leak on seq_file release config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20260820/202608201604.4Zj72hcA-lkp@intel.com/config) compiler: powerpc64-linux-gcc (GCC) 16.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260820/202608201604.4Zj72hcA-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202608201604.4Zj72hcA-lkp@intel.com/ All errors (new ones prefixed by >>): net/l2tp/l2tp_ppp.c: In function 'pppol2tp_proc_release': >> net/l2tp/l2tp_ppp.c:1641:17: error: implicit declaration of function 'l2tp_session_put'; did you mean 'l2tp_session_get'? [-Wimplicit-function-declaration] 1641 | l2tp_session_put(pd->session); | ^~~~~~~~~~~~~~~~ | l2tp_session_get >> net/l2tp/l2tp_ppp.c:1643:17: error: implicit declaration of function 'l2tp_tunnel_put'; did you mean 'l2tp_tunnel_get'? [-Wimplicit-function-declaration] 1643 | l2tp_tunnel_put(pd->tunnel); | ^~~~~~~~~~~~~~~ | l2tp_tunnel_get -- net/l2tp/l2tp_debugfs.c: In function 'l2tp_dfs_seq_release': >> net/l2tp/l2tp_debugfs.c:311:17: error: implicit declaration of function 'l2tp_session_put'; did you mean 'l2tp_session_get'? [-Wimplicit-function-declaration] 311 | l2tp_session_put(pd->session); | ^~~~~~~~~~~~~~~~ | l2tp_session_get >> net/l2tp/l2tp_debugfs.c:313:17: error: implicit declaration of function 'l2tp_tunnel_put'; did you mean 'l2tp_tunnel_get'? [-Wimplicit-function-declaration] 313 | l2tp_tunnel_put(pd->tunnel); | ^~~~~~~~~~~~~~~ | l2tp_tunnel_get vim +1641 net/l2tp/l2tp_ppp.c 1634 1635 static int pppol2tp_proc_release(struct inode *inode, struct file *file) 1636 { 1637 struct seq_file *seq = file->private_data; 1638 struct pppol2tp_seq_data *pd = seq->private; 1639 1640 if (pd->session) > 1641 l2tp_session_put(pd->session); 1642 if (pd->tunnel) > 1643 l2tp_tunnel_put(pd->tunnel); 1644 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki