From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com, Julia Lawall <julia.lawall@inria.fr>
Subject: drivers/gpu/drm/xe/xe_guc_ct.c:117:11-20: ERROR: __cleanup(kfree) will cause an invalid free: the stack address of the annotated variable will be passed to kfree; declare the variable using __free(kfree) to cause the pointee to be freed
Date: Sat, 07 Nov 2026 15:11:12 +0100 [thread overview]
Message-ID: <202611071504.Sfm2Y3U5-lkp@intel.com> (raw)
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
CC: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d48723711bae9b8cdc56719c448ba42fef28cbee
commit: ea944d57eac746f9bd9056134751708c48084207 drm/xe/guc_ct: Cleanup ifdef'ry
date: 12 months ago
:::::: branch date: 17 hours ago
:::::: commit date: 12 months ago
config: i386-randconfig-2104-20261107 (https://download.01.org/0day-ci/archive/20261107/202611071504.Sfm2Y3U5-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
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
| Fixes: ea944d57eac7 ("drm/xe/guc_ct: Cleanup ifdef'ry")
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Julia Lawall <julia.lawall@inria.fr>
| Closes: https://lore.kernel.org/r/202611071504.Sfm2Y3U5-lkp@intel.com/
cocci warnings: (new ones prefixed by >>)
>> drivers/gpu/drm/xe/xe_guc_ct.c:117:11-20: ERROR: __cleanup(kfree) will cause an invalid free: the stack address of the annotated variable will be passed to kfree; declare the variable using __free(kfree) to cause the pointee to be freed
vim +117 drivers/gpu/drm/xe/xe_guc_ct.c
ea944d57eac746f Lucas De Marchi 2025-11-19 112
ea944d57eac746f Lucas De Marchi 2025-11-19 113 static void fast_req_dump(struct xe_guc_ct *ct, u16 fence, unsigned int slot)
ea944d57eac746f Lucas De Marchi 2025-11-19 114 {
ea944d57eac746f Lucas De Marchi 2025-11-19 115 struct xe_gt *gt = ct_to_gt(ct);
ea944d57eac746f Lucas De Marchi 2025-11-19 116 #if IS_ENABLED(CONFIG_DRM_XE_DEBUG_GUC)
ea944d57eac746f Lucas De Marchi 2025-11-19 @117 char *buf __cleanup(kfree) = kmalloc(SZ_4K, GFP_NOWAIT);
ea944d57eac746f Lucas De Marchi 2025-11-19 118
ea944d57eac746f Lucas De Marchi 2025-11-19 119 if (buf && stack_depot_snprint(ct->fast_req[slot].stack, buf, SZ_4K, 0))
ea944d57eac746f Lucas De Marchi 2025-11-19 120 xe_gt_err(gt, "Fence 0x%x was used by action %#04x sent at:\n%s\n",
ea944d57eac746f Lucas De Marchi 2025-11-19 121 fence, ct->fast_req[slot].action, buf);
ea944d57eac746f Lucas De Marchi 2025-11-19 122 else
ea944d57eac746f Lucas De Marchi 2025-11-19 123 xe_gt_err(gt, "Fence 0x%x was used by action %#04x [failed to retrieve stack]\n",
ea944d57eac746f Lucas De Marchi 2025-11-19 124 fence, ct->fast_req[slot].action);
ea944d57eac746f Lucas De Marchi 2025-11-19 125 #else
ea944d57eac746f Lucas De Marchi 2025-11-19 126 xe_gt_err(gt, "Fence 0x%x was used by action %#04x\n",
ea944d57eac746f Lucas De Marchi 2025-11-19 127 fence, ct->fast_req[slot].action);
ea944d57eac746f Lucas De Marchi 2025-11-19 128 #endif
ea944d57eac746f Lucas De Marchi 2025-11-19 129 }
ea944d57eac746f Lucas De Marchi 2025-11-19 130
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-11-07 14:11 UTC|newest]
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