tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 04473ee9ed912a16fff0d8846ad565bbf3d63c77 commit: e777551b49fb8d8dbad14dd3a44c2f9b5c8fa6d4 [3547/3547] obmm: Remove log pringts of physical address and kernelspace virtual address config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20251220/202512202127.FExeoFRI-lkp@i...) compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251220/202512202127.FExeoFRI-lkp@i...) 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/202512202127.FExeoFRI-lkp@intel.com/ All warnings (new ones prefixed by >>):

...

drivers/ub/obmm/obmm_addr_check.c:53:14: warning: variable 'user' set but not used [-Wunused-but-set-variable] 53 | const char *user; | ^ 1 warning generated.

vim +/user +53 drivers/ub/obmm/obmm_addr_check.c 67ffb2edb43cde9 Li Ruilin 2025-11-07 49 67ffb2edb43cde9 Li Ruilin 2025-11-07 50 int free_pa_range(const struct obmm_pa_range *pa_range) 67ffb2edb43cde9 Li Ruilin 2025-11-07 51 { 67ffb2edb43cde9 Li Ruilin 2025-11-07 52 int ret; 67ffb2edb43cde9 Li Ruilin 2025-11-07 @53 const char *user; 67ffb2edb43cde9 Li Ruilin 2025-11-07 54 void *entry; 67ffb2edb43cde9 Li Ruilin 2025-11-07 55 unsigned long flags; 67ffb2edb43cde9 Li Ruilin 2025-11-07 56 67ffb2edb43cde9 Li Ruilin 2025-11-07 57 spin_lock_irqsave(&g_pa_checker.lock, flags); 67ffb2edb43cde9 Li Ruilin 2025-11-07 58 entry = mtree_erase(&g_pa_checker.pa_ranges, (unsigned long)pa_range->start); 67ffb2edb43cde9 Li Ruilin 2025-11-07 59 spin_unlock_irqrestore(&g_pa_checker.lock, flags); 67ffb2edb43cde9 Li Ruilin 2025-11-07 60 if (!entry) { e777551b49fb8d8 Li Ruilin 2025-12-15 61 pr_err("PA range to be freed not found.\n"); 67ffb2edb43cde9 Li Ruilin 2025-11-07 62 return -EFAULT; 67ffb2edb43cde9 Li Ruilin 2025-11-07 63 } 67ffb2edb43cde9 Li Ruilin 2025-11-07 64 ret = 0; 67ffb2edb43cde9 Li Ruilin 2025-11-07 65 if (!is_same_pa_range((const struct obmm_pa_range *)entry, pa_range)) { 67ffb2edb43cde9 Li Ruilin 2025-11-07 66 /* expected to be UNREACHABLE */ e777551b49fb8d8 Li Ruilin 2025-12-15 67 pr_err("BUG: PA range to be freed does not fully match.\n"); 67ffb2edb43cde9 Li Ruilin 2025-11-07 68 ret = -ENOTRECOVERABLE; 67ffb2edb43cde9 Li Ruilin 2025-11-07 69 } 0f73521b11e7af9 Li Ruilin 2025-11-07 70 user = ((struct obmm_pa_range *)entry)->info.user == OBMM_ADDR_USER_DIRECT_IMPORT ? 0f73521b11e7af9 Li Ruilin 2025-11-07 71 "import" : "preimport"; 67ffb2edb43cde9 Li Ruilin 2025-11-07 72 kfree(entry); 67ffb2edb43cde9 Li Ruilin 2025-11-07 73 return ret; 67ffb2edb43cde9 Li Ruilin 2025-11-07 74 } 67ffb2edb43cde9 Li Ruilin 2025-11-07 75 :::::: The code at line 53 was first introduced by commit :::::: 67ffb2edb43cde96368000620a63d0f6be11820f obmm: Add address validation and checking :::::: TO: Li Ruilin <liruilin4@huawei.com> :::::: CC: Li Ruilin <liruilin4@huawei.com> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki