ocfs2: Unmounting device (7,0) on (node local) VFS: Busy inodes after unmount of loop0 (ocfs2) ------------[ cut here ]------------ kernel BUG at fs/super.c:505! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4275 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 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 a5 66 f1 ff 49 8b 16 48 81 c3 a8 06 00 00 48 c7 c7 a0 5d b9 8a 48 89 de e8 8c 6a 4d 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:ffffc90002e47ba8 EFLAGS: 00010246 RAX: 000000000000002f RBX: ffff888075df26a8 RCX: 0795d22f60bea400 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff1100ebbe4fb R08: ffff8880b8c279db R09: 1ffff11017184f3b R10: dffffc0000000000 R11: ffffed1017184f3c R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff8e02d780 R15: ffff888075df27d8 FS: 0000000000000000(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffeaf1e1f88 CR3: 000000004f2d7000 CR4: 00000000003506f0 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: 0033:0x7ff418b9f559 Code: Unable to access opcode bytes at 0x7ff418b9f52f. RSP: 002b:00007fff80e90bd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007ff418c35f88 RCX: 00007ff418b9f559 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000028 R08: 0000000000000000 R09: 00007ff418c35f63 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff80e91e90 R13: 00007ff418c35f63 R14: 000000000009b43e R15: 00007fff80e92f60 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 a5 66 f1 ff 49 8b 16 48 81 c3 a8 06 00 00 48 c7 c7 a0 5d b9 8a 48 89 de e8 8c 6a 4d 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:ffffc90002e47ba8 EFLAGS: 00010246 RAX: 000000000000002f RBX: ffff888075df26a8 RCX: 0795d22f60bea400 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff1100ebbe4fb R08: ffff8880b8c279db R09: 1ffff11017184f3b R10: dffffc0000000000 R11: ffffed1017184f3c R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff8e02d780 R15: ffff888075df27d8 FS: 0000000000000000(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30207ff8 CR3: 000000004f399000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400