BTRFS info (device loop4): last unmount of filesystem 34a2da50-e117-4d40-8878-8e0fb0127b5f VFS: Busy inodes after unmount of loop4 (btrfs) ------------[ cut here ]------------ kernel BUG at fs/super.c:652! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 PID: 7863 Comm: syz-executor.4 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:generic_shutdown_super+0x2c7/0x2d0 fs/super.c:650 Code: 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 5c bc ee ff 48 8b 13 48 c7 c7 00 44 d8 8b 4c 89 e6 e8 4a 04 71 09 90 <0f> 0b 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90009a27d10 EFLAGS: 00010246 RAX: 000000000000002f RBX: ffffffff8e879880 RCX: 668f14a1ca8e5000 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff1100f883cf0 R08: ffffffff817690bc R09: fffffbfff1c39994 R10: dffffc0000000000 R11: fffffbfff1c39994 R12: ffff88807c41e668 R13: dffffc0000000000 R14: ffffffff8c0b00d8 R15: ffff88807c41e780 FS: 0000555565480480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbfa79bad58 CR3: 000000007bae6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kill_anon_super+0x3b/0x70 fs/super.c:1226 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2096 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1267 task_work_run+0x24f/0x310 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f18f0e7e257 Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffd9a8a8c48 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f18f0e7e257 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd9a8a8d00 RBP: 00007ffd9a8a8d00 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd9a8a9db0 R13: 00007f18f0ed96c6 R14: 000000000005952c R15: 000000000000001b Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:generic_shutdown_super+0x2c7/0x2d0 fs/super.c:650 Code: 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 5c bc ee ff 48 8b 13 48 c7 c7 00 44 d8 8b 4c 89 e6 e8 4a 04 71 09 90 <0f> 0b 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc90009a27d10 EFLAGS: 00010246 RAX: 000000000000002f RBX: ffffffff8e879880 RCX: 668f14a1ca8e5000 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff1100f883cf0 R08: ffffffff817690bc R09: fffffbfff1c39994 R10: dffffc0000000000 R11: fffffbfff1c39994 R12: ffff88807c41e668 R13: dffffc0000000000 R14: ffffffff8c0b00d8 R15: ffff88807c41e780 FS: 0000555565480480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558ec98a8680 CR3: 000000007bae6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400