------------[ cut here ]------------ Looking for class "dp->delay_work)" with key __key.4, but found a different class "(&sdp->delay_work)" with the same key WARNING: CPU: 0 PID: 7767 at kernel/locking/lockdep.c:932 look_up_lock_class+0x133/0x140 kernel/locking/lockdep.c:932 Modules linked in: CPU: 0 PID: 7767 Comm: syz-executor.1 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:look_up_lock_class+0x133/0x140 kernel/locking/lockdep.c:932 Code: c7 c7 20 b9 2c 8b e8 cc 53 74 f6 90 0f 0b 90 90 90 31 db eb be c6 05 f5 86 ef 04 01 90 48 c7 c7 40 bc 2c 8b e8 ae 53 74 f6 90 <0f> 0b 90 90 e9 62 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90007e4fa38 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffffffff9426b6b0 RCX: ffffffff81511289 RDX: ffff88801f91a440 RSI: ffffffff81511296 RDI: 0000000000000001 RBP: ffffffff94ad9ac0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 20676e696b6f6f4c R12: ffffe8ffad07e578 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff94ad8be0 FS: 0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:0000000056967400 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000c001a09000 CR3: 0000000024f96000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: register_lock_class+0xb1/0x1230 kernel/locking/lockdep.c:1284 __lock_acquire+0x111/0x3b30 kernel/locking/lockdep.c:5014 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719 __timer_delete_sync+0x152/0x1b0 kernel/time/timer.c:1647 del_timer_sync include/linux/timer.h:185 [inline] cleanup_srcu_struct+0x124/0x520 kernel/rcu/srcutree.c:659 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1351 [inline] kvm_put_kvm+0x8df/0xb80 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1380 kvm_vm_release+0x42/0x60 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1403 __fput+0x408/0xbb0 fs/file_table.c:422 __fput_sync+0x47/0x50 fs/file_table.c:507 __do_sys_close fs/open.c:1555 [inline] __se_sys_close fs/open.c:1540 [inline] __ia32_sys_close+0x86/0x100 fs/open.c:1540 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf72d9579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffc9ea20 EFLAGS: 00000293 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000056967400 RDX: 0000000000000000 RSI: 00000000f742fff4 RDI: 00000000ffffffff RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi