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370e2434-c770-475f-a884-08debc878687 X-MS-Exchange-CrossTenant-AuthSource: PH0PR11MB5832.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 May 2026 07:05:39.9643 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 5X0I4TJH7es9bfYMCKwlBWSdTP/uBGzkapCX6uQzGYEBBinjq8B9NCQoqoCf666Aw9DRDt/PbKKB2gWFH1z5Cw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR11MB6381 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "EIP:look_up_lock_class" on: commit: 73cf422c6afb067b7e5d395dae8c44e076a00ebb ("block: assign caller-specific lockdep class to disk->open_mutex") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master [test failed on linux-next/master e7d700e14934e68f86338c5610cf2ae76798b663] in testcase: trinity version: with following parameters: runtime: 300s group: group-01 nr_groups: 5 config: i386-randconfig-007-20260527 compiler: clang-20 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 32G (please refer to attached dmesg/kmsg for entire log/backtrace) 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 | Closes: https://lore.kernel.org/oe-lkp/202605281444.29e7f79b-lkp@intel.com [ 15.148854][ T192] ------------[ cut here ]------------ [ 15.150937][ T192] Looking for class "&cd->lock" with key sr_probe.__key, but found a different class "&disk->open_mutex" with the same key [ 15.154899][ T192] WARNING: kernel/locking/lockdep.c:944 at look_up_lock_class+0xfe/0x140, CPU#0: udevd/192 [ 15.157990][ T192] Modules linked in: [ 15.159228][ T192] CPU: 0 UID: 0 PID: 192 Comm: udevd Not tainted 7.1.0-rc5-00007-g73cf422c6afb #1 PREEMPT(lazy) 9df36ae0f1aead0a85dee313de9d5bfe012b6acd [ 15.163724][ T192] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 15.166935][ T192] EIP: look_up_lock_class (locking/lockdep.c:941) [ 15.168594][ T192] Code: f8 64 fd 83 c4 08 0f 0b eb cd 80 3d e5 95 8f 45 00 75 8f c6 05 e5 95 8f 45 01 51 52 50 68 c7 4b f8 44 e8 c5 f8 64 fd 83 c4 10 <0f> 0b e9 71 ff ff ff b8 90 88 25 45 89 f2 e8 af 10 35 fe 83 3d 18 All code ======== 0: f8 clc 1: 64 fd fs std 3: 83 c4 08 add $0x8,%esp 6: 0f 0b ud2 8: eb cd jmp 0xffffffffffffffd7 a: 80 3d e5 95 8f 45 00 cmpb $0x0,0x458f95e5(%rip) # 0x458f95f6 11: 75 8f jne 0xffffffffffffffa2 13: c6 05 e5 95 8f 45 01 movb $0x1,0x458f95e5(%rip) # 0x458f95ff 1a: 51 push %rcx 1b: 52 push %rdx 1c: 50 push %rax 1d: 68 c7 4b f8 44 push $0x44f84bc7 22: e8 c5 f8 64 fd call 0xfffffffffd64f8ec 27: 83 c4 10 add $0x10,%esp 2a:* 0f 0b ud2 <-- trapping instruction 2c: e9 71 ff ff ff jmp 0xffffffffffffffa2 31: b8 90 88 25 45 mov $0x45258890,%eax 36: 89 f2 mov %esi,%edx 38: e8 af 10 35 fe call 0xfffffffffe3510ec 3d: 83 .byte 0x83 3e: 3d .byte 0x3d 3f: 18 .byte 0x18 Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: e9 71 ff ff ff jmp 0xffffffffffffff78 7: b8 90 88 25 45 mov $0x45258890,%eax c: 89 f2 mov %esi,%edx e: e8 af 10 35 fe call 0xfffffffffe3510c2 13: 83 .byte 0x83 14: 3d .byte 0x3d 15: 18 .byte 0x18 [ 15.174645][ T192] EAX: 00000000 EBX: 465c09fc ECX: 00000000 EDX: 00000000 [ 15.176847][ T192] ESI: 45f5dacc EDI: bf79d6b0 EBP: 494d1ae0 ESP: 494d1ad4 [ 15.179052][ T192] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 EFLAGS: 00010006 [ 15.181672][ T192] CR0: 80050033 CR2: 3f831928 CR3: 7e675000 CR4: 000406d0 [ 15.183858][ T192] Call Trace: [ 15.184927][ T192] ? register_lock_class (locking/lockdep.c:1296) [ 15.186594][ T192] ? __lock_acquire (locking/lockdep.c:5114) [ 15.188124][ T192] ? blk_mq_free_request (blk-mq.c:830) [ 15.189788][ T192] ? scsi_test_unit_ready (scsi/scsi_lib.c:2489) [ 15.191460][ T192] ? sr_revalidate_disk (scsi/sr.c:484) [ 15.193069][ T192] ? lock_acquire (locking/lockdep.c:5870) [ 15.194534][ T192] ? sr_block_open (scsi/sr.c:511) [ 15.195998][ T192] ? __mutex_lock_common (locking/mutex.c:646) [ 15.197692][ T192] ? sr_block_open (scsi/sr.c:511) [ 15.199148][ T192] ? disk_check_media_change (linux/spinlock.h:402 disk-events.c:259 disk-events.c:276) [ 15.201094][ T192] ? lockdep_hardirqs_on_prepare (locking/lockdep.c:4327 locking/lockdep.c:4412) [ 15.202969][ T192] ? mutex_lock_nested (locking/mutex.c:820 locking/mutex.c:873) [ 15.204515][ T192] ? sr_block_open (scsi/sr.c:511) [ 15.205963][ T192] ? sr_block_open (scsi/sr.c:511) [ 15.207402][ T192] ? blkdev_get_whole (bdev.c:738) [ 15.208937][ T192] ? bdev_open (bdev.c:965) [ 15.210863][ T192] ? blkdev_open (fops.c:697) [ 15.212973][ T192] ? blkdev_write_iter (fops.c:809) [ 15.215448][ T192] ? do_dentry_open (open.c:947) [ 15.217726][ T192] ? inode_permission (namei.c:656) [ 15.220026][ T192] ? vfs_open (open.c:1079) [ 15.222005][ T192] ? path_openat (namei.c:4699) [ 15.224177][ T192] ? do_file_open (namei.c:4887) [ 15.226381][ T192] ? do_sys_openat2 (open.c:1364) [ 15.228648][ T192] ? __ia32_sys_openat (open.c:1370 open.c:1386 open.c:1381 open.c:1381) [ 15.231073][ T192] ? ia32_sys_call (kbuild/obj/consumer/i386-randconfig-007-20260527/./arch/x86/include/generated/asm/syscalls_32.h:296) [ 15.233322][ T192] ? do_int80_syscall_32 (x86/entry/syscall_32.c:83) [ 15.235698][ T192] ? _copy_to_user (x86/include/asm/uaccess_32.h:20 linux/uaccess.h:206 usercopy.c:26) [ 15.237840][ T192] ? do_int80_syscall_32 (linux/entry-common.h:317) [ 15.240356][ T192] ? rcu_is_watching (rcu/tree.c:753) [ 15.242605][ T192] ? do_int80_syscall_32 (linux/randomize_kstack.h:57) [ 15.245000][ T192] ? entry_INT80_32 (x86/entry/entry_32.S:940) [ 15.247150][ T192] ? exc_page_fault (x86/mm/fault.c:1530) [ 15.249320][ T192] ? entry_INT80_32 (x86/entry/entry_32.S:940) [ 15.251034][ T192] irq event stamp: 4795 [ 15.252378][ T192] hardirqs last enabled at (4795): _raw_spin_unlock_irqrestore (linux/spinlock_api_smp.h:178 locking/spinlock.c:198) [ 15.255395][ T192] hardirqs last disabled at (4794): _raw_spin_lock_irqsave (linux/spinlock_api_smp.h:130 locking/spinlock.c:166) [ 15.258260][ T192] softirqs last enabled at (4654): local_bh_enable (linux/bottom_half.h:32) [ 15.260941][ T192] softirqs last disabled at (4652): local_bh_disable (linux/bottom_half.h:19) [ 15.263626][ T192] ---[ end trace 0000000000000000 ]--- [ 15.265332][ T192] [ 15.266134][ T192] ============================================ The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260528/202605281444.29e7f79b-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki