ocfs2: Unmounting device (7,2) on (node local) VFS: Busy inodes after unmount of loop2 (ocfs2) ------------[ cut here ]------------ kernel BUG at fs/super.c:505! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 4274 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 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 65 6c f1 ff 49 8b 16 48 81 c3 a8 06 00 00 48 c7 c7 a0 57 99 8a 48 89 de e8 ac 06 42 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:ffffc90003ed7b98 EFLAGS: 00010246 RAX: 000000000000002f RBX: ffff888078b146a8 RCX: dafb504640def100 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff1100f1628fb R08: ffffc90003ed78a7 R09: 1ffff920007daf14 R10: dffffc0000000000 R11: fffff520007daf15 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff8d01af20 R15: ffff888078b147d8 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8a43fb4000 CR3: 00000000647f8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kill_block_super+0x7c/0xe0 fs/super.c:1470 deactivate_locked_super+0x93/0xf0 fs/super.c:332 cleanup_mnt+0x42c/0x4b0 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+0x982/0x2480 kernel/exit.c:881 do_group_exit+0x217/0x2d0 kernel/exit.c:1024 __do_sys_exit_group kernel/exit.c:1035 [inline] __se_sys_exit_group kernel/exit.c:1033 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1033 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: 0033:0x7fab9b19ce59 Code: Unable to access opcode bytes at 0x7fab9b19ce2f. RSP: 002b:00007fff9ba3f688 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007fab9b2321ef RCX: 00007fab9b19ce59 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000028 R08: 0000000000000000 R09: 00007fab9b2321ca R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff9ba40940 R13: 00007fab9b2321ca R14: 0000000000018ade R15: 00007fff9ba41a10 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 65 6c f1 ff 49 8b 16 48 81 c3 a8 06 00 00 48 c7 c7 a0 57 99 8a 48 89 de e8 ac 06 42 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:ffffc90003ed7b98 EFLAGS: 00010246 RAX: 000000000000002f RBX: ffff888078b146a8 RCX: dafb504640def100 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff1100f1628fb R08: ffffc90003ed78a7 R09: 1ffff920007daf14 R10: dffffc0000000000 R11: fffff520007daf15 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff8d01af20 R15: ffff888078b147d8 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f180e1fb000 CR3: 0000000061d41000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400