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: <202107152141.eYMpUfiV-lkp@intel.com>
Date:   Thu, 15 Jul 2021 21:16:52 +0800
From:   kernel test robot <lkp@...el.com>
To:     Luis Chamberlain <mcgrof@...nel.org>
Cc:     clang-built-linux@...glegroups.com, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [mcgrof-next:20210708-block-fixes-v2 61/89] drivers/md/md.c:9592:42:
 error: incompatible function pointer types passing 'void (dev_t)' (aka 'void
 (unsigned int)') to parameter of type 'int (*)(dev_t)' (aka 'int
 (*)(unsigned int)')

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git 20210708-block-fixes-v2
head:   db0174e39de7dc941f158ce53ee3af95b1635b62
commit: b253de076cda99b4968dd20b1a9702de24376152 [61/89] block: make __register_blkdev() return an error
config: powerpc-randconfig-r005-20210715 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 0e49c54a8cbd3e779e5526a5888c683c01cc3c50)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git/commit/?id=b253de076cda99b4968dd20b1a9702de24376152
        git remote add mcgrof-next https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git
        git fetch --no-tags mcgrof-next 20210708-block-fixes-v2
        git checkout b253de076cda99b4968dd20b1a9702de24376152
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All error/warnings (new ones prefixed by >>):

>> drivers/block/floppy.c:4532:7: warning: variable 'err' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
                   if (floppy_alloc_disk(drive, type) == 0) {
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/block/floppy.c:4540:9: note: uninitialized use occurs here
           return err;
                  ^~~
   drivers/block/floppy.c:4532:3: note: remove the 'if' if its condition is always true
                   if (floppy_alloc_disk(drive, type) == 0) {
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/block/floppy.c:4531:6: warning: variable 'err' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
           if (!disks[drive][type]) {
               ^~~~~~~~~~~~~~~~~~~
   drivers/block/floppy.c:4540:9: note: uninitialized use occurs here
           return err;
                  ^~~
   drivers/block/floppy.c:4531:2: note: remove the 'if' if its condition is always true
           if (!disks[drive][type]) {
           ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/block/floppy.c:4524:9: note: initialize the variable 'err' to silence this warning
           int err;
                  ^
                   = 0
   2 warnings generated.
--
>> drivers/md/md.c:9592:42: error: incompatible function pointer types passing 'void (dev_t)' (aka 'void (unsigned int)') to parameter of type 'int (*)(dev_t)' (aka 'int (*)(unsigned int)') [-Werror,-Wincompatible-function-pointer-types]
           ret = __register_blkdev(MD_MAJOR, "md", md_probe);
                                                   ^~~~~~~~
   include/linux/genhd.h:315:9: note: passing argument to parameter 'probe' here
                   int (*probe)(dev_t devt));
                         ^
   drivers/md/md.c:9596:36: error: incompatible function pointer types passing 'void (dev_t)' (aka 'void (unsigned int)') to parameter of type 'int (*)(dev_t)' (aka 'int (*)(unsigned int)') [-Werror,-Wincompatible-function-pointer-types]
           ret = __register_blkdev(0, "mdp", md_probe);
                                             ^~~~~~~~
   include/linux/genhd.h:315:9: note: passing argument to parameter 'probe' here
                   int (*probe)(dev_t devt));
                         ^
   2 errors generated.


vim +9592 drivers/md/md.c

^1da177e4c3f41 Linus Torvalds    2005-04-16  9575  
75c96f85845a67 Adrian Bunk       2005-05-05  9576  static int __init md_init(void)
^1da177e4c3f41 Linus Torvalds    2005-04-16  9577  {
e804ac780e2f01 Tejun Heo         2010-10-15  9578  	int ret = -ENOMEM;
e804ac780e2f01 Tejun Heo         2010-10-15  9579  
ada609ee2ac2e0 Tejun Heo         2011-01-25  9580  	md_wq = alloc_workqueue("md", WQ_MEM_RECLAIM, 0);
e804ac780e2f01 Tejun Heo         2010-10-15  9581  	if (!md_wq)
e804ac780e2f01 Tejun Heo         2010-10-15  9582  		goto err_wq;
e804ac780e2f01 Tejun Heo         2010-10-15  9583  
e804ac780e2f01 Tejun Heo         2010-10-15  9584  	md_misc_wq = alloc_workqueue("md_misc", 0, 0);
e804ac780e2f01 Tejun Heo         2010-10-15  9585  	if (!md_misc_wq)
e804ac780e2f01 Tejun Heo         2010-10-15  9586  		goto err_misc_wq;
e804ac780e2f01 Tejun Heo         2010-10-15  9587  
cc1ffe61c026e2 Guoqing Jiang     2020-04-04  9588  	md_rdev_misc_wq = alloc_workqueue("md_rdev_misc", 0, 0);
cf0b9b4821a295 Guoqing Jiang     2020-10-08  9589  	if (!md_rdev_misc_wq)
cc1ffe61c026e2 Guoqing Jiang     2020-04-04  9590  		goto err_rdev_misc_wq;
cc1ffe61c026e2 Guoqing Jiang     2020-04-04  9591  
28144f9998e047 Christoph Hellwig 2020-10-29 @9592  	ret = __register_blkdev(MD_MAJOR, "md", md_probe);
28144f9998e047 Christoph Hellwig 2020-10-29  9593  	if (ret < 0)
e804ac780e2f01 Tejun Heo         2010-10-15  9594  		goto err_md;
e804ac780e2f01 Tejun Heo         2010-10-15  9595  
28144f9998e047 Christoph Hellwig 2020-10-29  9596  	ret = __register_blkdev(0, "mdp", md_probe);
28144f9998e047 Christoph Hellwig 2020-10-29  9597  	if (ret < 0)
e804ac780e2f01 Tejun Heo         2010-10-15  9598  		goto err_mdp;
e804ac780e2f01 Tejun Heo         2010-10-15  9599  	mdp_major = ret;
e804ac780e2f01 Tejun Heo         2010-10-15  9600  
^1da177e4c3f41 Linus Torvalds    2005-04-16  9601  	register_reboot_notifier(&md_notifier);
0b4d414714f0d2 Eric W. Biederman 2007-02-14  9602  	raid_table_header = register_sysctl_table(raid_root_table);
^1da177e4c3f41 Linus Torvalds    2005-04-16  9603  
^1da177e4c3f41 Linus Torvalds    2005-04-16  9604  	md_geninit();
d710e138126000 NeilBrown         2008-10-13  9605  	return 0;
^1da177e4c3f41 Linus Torvalds    2005-04-16  9606  
e804ac780e2f01 Tejun Heo         2010-10-15  9607  err_mdp:
e804ac780e2f01 Tejun Heo         2010-10-15  9608  	unregister_blkdev(MD_MAJOR, "md");
e804ac780e2f01 Tejun Heo         2010-10-15  9609  err_md:
cc1ffe61c026e2 Guoqing Jiang     2020-04-04  9610  	destroy_workqueue(md_rdev_misc_wq);
cc1ffe61c026e2 Guoqing Jiang     2020-04-04  9611  err_rdev_misc_wq:
e804ac780e2f01 Tejun Heo         2010-10-15  9612  	destroy_workqueue(md_misc_wq);
e804ac780e2f01 Tejun Heo         2010-10-15  9613  err_misc_wq:
e804ac780e2f01 Tejun Heo         2010-10-15  9614  	destroy_workqueue(md_wq);
e804ac780e2f01 Tejun Heo         2010-10-15  9615  err_wq:
e804ac780e2f01 Tejun Heo         2010-10-15  9616  	return ret;
e804ac780e2f01 Tejun Heo         2010-10-15  9617  }
^1da177e4c3f41 Linus Torvalds    2005-04-16  9618  

:::::: The code at line 9592 was first introduced by commit
:::::: 28144f9998e047a9bac31421914335c6bc6eaa67 md: use __register_blkdev to allocate devices on demand

:::::: TO: Christoph Hellwig <hch@....de>
:::::: CC: Jens Axboe <axboe@...nel.dk>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (39564 bytes)

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ