ocfs2: Unmounting device (7,1) on (node local) VFS: Busy inodes after unmount of loop1 (ocfs2) ------------[ cut here ]------------ kernel BUG at fs/super.c:505! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4604 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026 RIP: 0010:generic_shutdown_super+0x334/0x340 fs/super.c:503 Code: e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 15 50 f1 ff 49 8b 16 48 81 c3 a8 06 00 00 48 c7 c7 60 62 b9 8a 48 89 de e8 1c 9c 49 08 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 41 57 41 56 53 48 89 fb 49 RSP: 0018:ffffc90004f7fba8 EFLAGS: 00010246 RAX: 000000000000002f RBX: ffff8880567586a8 RCX: 39bea8decc284c00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff1100aceb0fb R08: ffffc90004f7f8a7 R09: 1ffff920009eff14 R10: dffffc0000000000 R11: fffff520009eff15 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff8e020d40 R15: ffff8880567587d8 FS: 0000000000000000(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f60a8027dac CR3: 0000000064051000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kill_block_super+0x7c/0xe0 fs/super.c:1481 deactivate_locked_super+0x93/0xf0 fs/super.c:332 cleanup_mnt+0x471/0x4f0 fs/namespace.c:1191 task_work_run+0x1d0/0x260 kernel/task_work.c:203 exit_task_work include/linux/task_work.h:39 [inline] do_exit+0x9d5/0x2570 kernel/exit.c:887 do_group_exit+0x229/0x2e0 kernel/exit.c:1030 __do_sys_exit_group kernel/exit.c:1041 [inline] __se_sys_exit_group kernel/exit.c:1039 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1039 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f013e9a8fd9 Code: Unable to access opcode bytes at 0x7f013e9a8faf. RSP: 002b:00007ffc959ddf58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f013ea37408 RCX: 00007f013e9a8fd9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000028 R08: 0000000000000000 R09: 00007f013ea373e3 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc959df210 R13: 00007f013ea373e3 R14: 000000000003215b R15: 00007ffc959e02e0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:generic_shutdown_super+0x334/0x340 fs/super.c:503 Code: e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 15 50 f1 ff 49 8b 16 48 81 c3 a8 06 00 00 48 c7 c7 60 62 b9 8a 48 89 de e8 1c 9c 49 08 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 55 41 57 41 56 53 48 89 fb 49 RSP: 0018:ffffc90004f7fba8 EFLAGS: 00010246 RAX: 000000000000002f RBX: ffff8880567586a8 RCX: 39bea8decc284c00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff1100aceb0fb R08: ffffc90004f7f8a7 R09: 1ffff920009eff14 R10: dffffc0000000000 R11: fffff520009eff15 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff8e020d40 R15: ffff8880567587d8 FS: 0000000000000000(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055fe0013e950 CR3: 000000007e5c0000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400