:::::: :::::: Manual check reason: "low confidence bisect report" :::::: Manual check reason: "low confidence static check warning: drivers/ufs/core/ufshcd-priv.h:256:40: warning: dereference of NULL '0' [CWE-476] [-Wanalyzer-null-dereference]" ::::::
CC: [email protected] BCC: [email protected] CC: [email protected] TO: Bart Van Assche <[email protected]> CC: "Martin K. Petersen" <[email protected]> CC: Bean Huo <[email protected]> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: b13baccc3850ca8b8cccbf8ed9912dbaa0fdf7f3 commit: dd11376b9f1b73aca3f8c6eb541486bbb6996f05 scsi: ufs: Split the drivers/scsi/ufs directory date: 4 weeks ago :::::: branch date: 35 hours ago :::::: commit date: 4 weeks ago config: i386-randconfig-c001-20220613 (https://download.01.org/0day-ci/archive/20220614/[email protected]/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=dd11376b9f1b73aca3f8c6eb541486bbb6996f05 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout dd11376b9f1b73aca3f8c6eb541486bbb6996f05 # save the config file ARCH=i386 KBUILD_USERCFLAGS='-fanalyzer -Wno-error' If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <[email protected]> gcc-analyzer warnings: (new ones prefixed by >>) In file included from drivers/ufs/core/ufs_bsg.c:13: drivers/ufs/core/ufs_bsg.c: In function 'ufs_bsg_request': >> drivers/ufs/core/ufshcd-priv.h:256:40: warning: dereference of NULL '0' >> [CWE-476] [-Wanalyzer-null-dereference] 256 | return pm_runtime_get_sync(&hba->ufs_device_wlun->sdev_gendev); | ~~~^~~~~~~~~~~~~~~~~ 'ufs_bsg_request': events 1-2 | |drivers/ufs/core/ufs_bsg.c:86:12: | 86 | static int ufs_bsg_request(struct bsg_job *job) | | ^~~~~~~~~~~~~~~ | | | | | (1) entry to 'ufs_bsg_request' |...... | 90 | struct ufs_hba *hba = shost_priv(dev_to_shost(job->dev->parent)); | | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | | | (2) calling 'dev_to_shost' from 'ufs_bsg_request' | +--> 'dev_to_shost': events 3-5 | |include/scsi/scsi_host.h:726:33: | 726 | static inline struct Scsi_Host *dev_to_shost(struct device *dev) | | ^~~~~~~~~~~~ | | | | | (3) entry to 'dev_to_shost' | 727 | { | 728 | while (!scsi_is_host_device(dev)) { | | ~~~~~~~~~~~~~~~~~~~~~~~~~ | | | | | (4) following 'true' branch... | 729 | if (!dev->parent) | | ~~~~~~~~~~~ | | | | | (5) ...to here | <------+ | 'ufs_bsg_request': events 6-8 | |drivers/ufs/core/ufs_bsg.c:90:31: | 90 | struct ufs_hba *hba = shost_priv(dev_to_shost(job->dev->parent)); | | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | | | (6) returning to 'ufs_bsg_request' from 'dev_to_shost' |...... | 101 | if (ret) | | ~ | | | | | (7) following 'false' branch (when 'ret == 0')... |...... | 104 | bsg_reply->reply_payload_rcv_len = 0; | | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | | | | | (8) ...to here | 'ufs_bsg_request': event 9 | |drivers/ufs/core/ufshcd-priv.h:256:40: | 256 | return pm_runtime_get_sync(&hba->ufs_device_wlun->sdev_gendev); | | ~~~^~~~~~~~~~~~~~~~~ | | | | | (9) dereference of NULL 'dev_to_shost(*job_39(D)->dev.parent)' | vim +/0 +256 drivers/ufs/core/ufshcd-priv.h 4bc26113c60307 drivers/scsi/ufs/ufshcd-priv.h Bart Van Assche 2022-04-19 253 4bc26113c60307 drivers/scsi/ufs/ufshcd-priv.h Bart Van Assche 2022-04-19 254 static inline int ufshcd_rpm_get_sync(struct ufs_hba *hba) 4bc26113c60307 drivers/scsi/ufs/ufshcd-priv.h Bart Van Assche 2022-04-19 255 { 4bc26113c60307 drivers/scsi/ufs/ufshcd-priv.h Bart Van Assche 2022-04-19 @256 return pm_runtime_get_sync(&hba->ufs_device_wlun->sdev_gendev); 4bc26113c60307 drivers/scsi/ufs/ufshcd-priv.h Bart Van Assche 2022-04-19 257 } 4bc26113c60307 drivers/scsi/ufs/ufshcd-priv.h Bart Van Assche 2022-04-19 258 :::::: The code at line 256 was first introduced by commit :::::: 4bc26113c603073363ac96f6f1c7d6389bc0b243 scsi: ufs: Split the ufshcd.h header file :::::: TO: Bart Van Assche <[email protected]> :::::: CC: Martin K. Petersen <[email protected]> -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
