* fs/overlayfs/dir.c:588:13: sparse: sparse: incompatible types in comparison expression (different address spaces):
@ 2025-12-18 4:09 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2025-12-18 4:09 UTC (permalink / raw)
To: Christian Brauner; +Cc: oe-kbuild-all, linux-kernel, Amir Goldstein
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ea1013c1539270e372fc99854bc6e4d94eaeff66
commit: f37b334728814b14745e15d46f9eab73750b67ec ovl: add ovl_override_creator_creds cred guard
date: 4 weeks ago
config: x86_64-randconfig-121-20251218 (https://download.01.org/0day-ci/archive/20251218/202512181104.Dj73SWGl-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251218/202512181104.Dj73SWGl-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512181104.Dj73SWGl-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> fs/overlayfs/dir.c:588:13: sparse: sparse: incompatible types in comparison expression (different address spaces):
fs/overlayfs/dir.c:588:13: sparse: struct cred const [noderef] __rcu *
fs/overlayfs/dir.c:588:13: sparse: struct cred const *
vim +588 fs/overlayfs/dir.c
583
584 static const struct cred *ovl_override_creator_creds(struct dentry *dentry, struct inode *inode, umode_t mode)
585 {
586 int err;
587
> 588 if (WARN_ON_ONCE(current->cred != ovl_creds(dentry->d_sb)))
589 return ERR_PTR(-EINVAL);
590
591 CLASS(prepare_creds, override_cred)();
592 if (!override_cred)
593 return ERR_PTR(-ENOMEM);
594
595 override_cred->fsuid = inode->i_uid;
596 override_cred->fsgid = inode->i_gid;
597
598 err = security_dentry_create_files_as(dentry, mode, &dentry->d_name,
599 current->cred, override_cred);
600 if (err)
601 return ERR_PTR(err);
602
603 return override_creds(no_free_ptr(override_cred));
604 }
605
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
* fs/overlayfs/dir.c:588:13: sparse: sparse: incompatible types in comparison expression (different address spaces):
@ 2026-01-18 15:04 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-01-18 15:04 UTC (permalink / raw)
To: Christian Brauner; +Cc: oe-kbuild-all, linux-kernel, Amir Goldstein
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: e84d960149e71e8d5e4db69775ce31305898ed0c
commit: f37b334728814b14745e15d46f9eab73750b67ec ovl: add ovl_override_creator_creds cred guard
date: 9 weeks ago
config: i386-randconfig-061-20260118 (https://download.01.org/0day-ci/archive/20260118/202601182248.liv5wrSK-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260118/202601182248.liv5wrSK-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601182248.liv5wrSK-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> fs/overlayfs/dir.c:588:13: sparse: sparse: incompatible types in comparison expression (different address spaces):
fs/overlayfs/dir.c:588:13: sparse: struct cred const [noderef] __rcu *
fs/overlayfs/dir.c:588:13: sparse: struct cred const *
vim +588 fs/overlayfs/dir.c
583
584 static const struct cred *ovl_override_creator_creds(struct dentry *dentry, struct inode *inode, umode_t mode)
585 {
586 int err;
587
> 588 if (WARN_ON_ONCE(current->cred != ovl_creds(dentry->d_sb)))
589 return ERR_PTR(-EINVAL);
590
591 CLASS(prepare_creds, override_cred)();
592 if (!override_cred)
593 return ERR_PTR(-ENOMEM);
594
595 override_cred->fsuid = inode->i_uid;
596 override_cred->fsgid = inode->i_gid;
597
598 err = security_dentry_create_files_as(dentry, mode, &dentry->d_name,
599 current->cred, override_cred);
600 if (err)
601 return ERR_PTR(err);
602
603 return override_creds(no_free_ptr(override_cred));
604 }
605
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
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