linux-kernel - [gustavoars:testing/wfamnae-next20250616 1/19] kernel/bpf/core.c:2582:22: warning: comparison of distinct pointer types lacks a cast

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <202507010611.pCKM7IGa-lkp@intel.com>
Date: Tue, 1 Jul 2025 06:11:31 +0200
From: kernel test robot <lkp@...el.com>
To: "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc: oe-kbuild-all@...ts.linux.dev,
	"Gustavo A. R. Silva" <gustavo@...eddedor.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [gustavoars:testing/wfamnae-next20250616 1/19]
 kernel/bpf/core.c:2582:22: warning: comparison of distinct pointer types
 lacks a cast

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git testing/wfamnae-next20250616
head:   78f053980ba50a0becae798ab7d07527d97e790d
commit: 58bb0d96c1e2ad5ef83b1565b441ae40b9da2652 [1/19] treewide_some: fix multiple -Wfamnae warnings that must be audited separately
config: nios2-randconfig-2001-20250701 (https://download.01.org/0day-ci/archive/20250701/202507010611.pCKM7IGa-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250701/202507010611.pCKM7IGa-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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507010611.pCKM7IGa-lkp@intel.com/

All warnings (new ones prefixed by >>):

   kernel/bpf/core.c: In function 'bpf_prog_array_free_sleepable':
>> kernel/bpf/core.c:2582:22: warning: comparison of distinct pointer types lacks a cast
     if (!progs || progs == &bpf_empty_prog_array.hdr)
                         ^~


vim +2582 kernel/bpf/core.c

8c7dcb84e3b744 Delyan Kratunov 2022-06-14  2579  
8c7dcb84e3b744 Delyan Kratunov 2022-06-14  2580  void bpf_prog_array_free_sleepable(struct bpf_prog_array *progs)
8c7dcb84e3b744 Delyan Kratunov 2022-06-14  2581  {
8c7dcb84e3b744 Delyan Kratunov 2022-06-14 @2582  	if (!progs || progs == &bpf_empty_prog_array.hdr)
8c7dcb84e3b744 Delyan Kratunov 2022-06-14  2583  		return;
8c7dcb84e3b744 Delyan Kratunov 2022-06-14  2584  	call_rcu_tasks_trace(&progs->rcu, __bpf_prog_array_free_sleepable_cb);
8c7dcb84e3b744 Delyan Kratunov 2022-06-14  2585  }
8c7dcb84e3b744 Delyan Kratunov 2022-06-14  2586  

:::::: The code at line 2582 was first introduced by commit
:::::: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9 bpf: implement sleepable uprobes by chaining gps

:::::: TO: Delyan Kratunov <delyank@...com>
:::::: CC: Alexei Starovoitov <ast@...nel.org>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki