CC: [email protected] In-Reply-To: <[email protected]> References: <[email protected]> TO: Desmond Cheong Zhi Xi <[email protected]> TO: [email protected] TO: [email protected] TO: [email protected] TO: [email protected] TO: [email protected] TO: [email protected] TO: [email protected] CC: Desmond Cheong Zhi Xi <[email protected]> CC: [email protected] CC: [email protected]
Hi Desmond, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.14-rc5 next-20210813] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Desmond-Cheong-Zhi-Xi/drm-update-the-ioctl-handler/20210813-170456 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f8e6dfc64f6135d1b6c5215c14cd30b9b60a0008 :::::: branch date: 5 hours ago :::::: commit date: 5 hours ago config: x86_64-randconfig-s031-20210813 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-348-gf0e6938b-dirty # https://github.com/0day-ci/linux/commit/485c944226fc155b0f5f7df8b9597a9e72e4e2df git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Desmond-Cheong-Zhi-Xi/drm-update-the-ioctl-handler/20210813-170456 git checkout 485c944226fc155b0f5f7df8b9597a9e72e4e2df # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> sparse warnings: (new ones prefixed by >>) >> drivers/gpu/drm/drm_auth.c:408:6: sparse: sparse: context imbalance in >> 'drm_master_internal_acquire' - different lock contexts for basic block drivers/gpu/drm/drm_auth.c: note: in included file (through include/linux/notifier.h, include/linux/memory_hotplug.h, include/linux/mmzone.h, ...): include/linux/srcu.h:188:9: sparse: sparse: context imbalance in 'drm_master_internal_release' - unexpected unlock -- >> drivers/gpu/drm/drm_ioctl.c:816:9: sparse: sparse: context imbalance in >> 'drm_ioctl_kernel' - different lock contexts for basic block vim +/drm_master_internal_acquire +408 drivers/gpu/drm/drm_auth.c 03a9606e7feef9 Noralf Trønnes 2019-05-06 406 03a9606e7feef9 Noralf Trønnes 2019-05-06 407 /* Used by drm_client and drm_fb_helper */ 485c944226fc15 Desmond Cheong Zhi Xi 2021-08-13 @408 bool drm_master_internal_acquire(struct drm_device *dev, int *idx) 03a9606e7feef9 Noralf Trønnes 2019-05-06 409 { 485c944226fc15 Desmond Cheong Zhi Xi 2021-08-13 410 *idx = srcu_read_lock(&dev->master_barrier_srcu); 485c944226fc15 Desmond Cheong Zhi Xi 2021-08-13 411 03a9606e7feef9 Noralf Trønnes 2019-05-06 412 mutex_lock(&dev->master_mutex); 03a9606e7feef9 Noralf Trønnes 2019-05-06 413 if (dev->master) { 03a9606e7feef9 Noralf Trønnes 2019-05-06 414 mutex_unlock(&dev->master_mutex); 485c944226fc15 Desmond Cheong Zhi Xi 2021-08-13 415 srcu_read_unlock(&dev->master_barrier_srcu, *idx); 03a9606e7feef9 Noralf Trønnes 2019-05-06 416 return false; 03a9606e7feef9 Noralf Trønnes 2019-05-06 417 } 485c944226fc15 Desmond Cheong Zhi Xi 2021-08-13 418 mutex_unlock(&dev->master_mutex); 03a9606e7feef9 Noralf Trønnes 2019-05-06 419 03a9606e7feef9 Noralf Trønnes 2019-05-06 420 return true; 03a9606e7feef9 Noralf Trønnes 2019-05-06 421 } 03a9606e7feef9 Noralf Trønnes 2019-05-06 422 EXPORT_SYMBOL(drm_master_internal_acquire); 03a9606e7feef9 Noralf Trønnes 2019-05-06 423 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
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