BTRFS info (device loop4): auto enabling async discard BTRFS error (device loop4): err add delayed dir index item(name: ‡φη) into the insertion tree of the delayed node(root id: 5, inode id: 257, errno: -17) ------------[ cut here ]------------ kernel BUG at fs/btrfs/delayed-inode.c:1504! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 29694 Comm: syz-executor.4 Not tainted 6.5.0-syzkaller-09276-g99d99825fc07 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:btrfs_insert_delayed_dir_index+0x783/0x920 fs/btrfs/delayed-inode.c:1504 Code: 00 48 c1 ea 03 80 3c 02 00 0f 85 5a 01 00 00 48 8b 7d 50 41 54 48 c7 c6 20 ef b7 8a 48 8b 4c 24 08 8b 54 24 38 e8 8d e4 0e 00 <0f> 0b 48 8b 7c 24 20 e8 41 44 51 fe e9 ec f8 ff ff e8 97 44 51 fe RSP: 0018:ffffc9000e9d7320 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88802bf10000 RCX: ffffc9000d357000 RDX: 0000000000040000 RSI: ffffffff839ac316 RDI: 0000000000000005 RBP: ffff88802fcdbe70 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: fffffffffffffb38 R12: 00000000ffffffef R13: 00000000000c0000 R14: ffff888082e6f300 R15: ffff8880346dc000 FS: 00007f286cd1c6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2c02a000 CR3: 00000000514d1000 CR4: 0000000000350ef0 Call Trace: btrfs_insert_dir_item+0x47e/0x670 fs/btrfs/dir-item.c:166 btrfs_add_link+0x45e/0xc30 fs/btrfs/inode.c:6415 btrfs_create_new_inode+0x1a6c/0x2710 fs/btrfs/inode.c:6356 create_subvol+0xd9e/0x15e0 fs/btrfs/ioctl.c:748 btrfs_mksubvol+0xe9f/0x12c0 fs/btrfs/ioctl.c:997 __btrfs_ioctl_snap_create+0x2f7/0x4f0 fs/btrfs/ioctl.c:1272 btrfs_ioctl_snap_create+0x168/0x200 fs/btrfs/ioctl.c:1321 btrfs_ioctl+0x3aa2/0x5cf0 fs/btrfs/ioctl.c:4568 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f286c07cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f286cd1c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f286c19bf80 RCX: 00007f286c07cae9 RDX: 0000000020000240 RSI: 000000005000940e RDI: 0000000000000006 RBP: 00007f286c0c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f286c19bf80 R15: 00007ffd5ff629e8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:btrfs_insert_delayed_dir_index+0x783/0x920 fs/btrfs/delayed-inode.c:1504 Code: 00 48 c1 ea 03 80 3c 02 00 0f 85 5a 01 00 00 48 8b 7d 50 41 54 48 c7 c6 20 ef b7 8a 48 8b 4c 24 08 8b 54 24 38 e8 8d e4 0e 00 <0f> 0b 48 8b 7c 24 20 e8 41 44 51 fe e9 ec f8 ff ff e8 97 44 51 fe RSP: 0018:ffffc9000e9d7320 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff88802bf10000 RCX: ffffc9000d357000 RDX: 0000000000040000 RSI: ffffffff839ac316 RDI: 0000000000000005 RBP: ffff88802fcdbe70 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: fffffffffffffb38 R12: 00000000ffffffef R13: 00000000000c0000 R14: ffff888082e6f300 R15: ffff8880346dc000 FS: 00007f286cd1c6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020404030 CR3: 00000000514d1000 CR4: 0000000000350ee0