Oops: stack segment: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 6246 Comm: syz.3.81 Not tainted 6.16.0-rc4-syzkaller-00109-gb9fd9888a565 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:kernfs_rename_ns+0x3a/0x7a0 fs/kernfs/dir.c:1747 Code: ec 48 48 89 cb 48 89 54 24 10 49 89 f5 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 d1 5b 62 ff 4d 8d 7e 30 4c 89 fd 48 c1 ed 03 <42> 80 7c 25 00 00 74 08 4c 89 ff e8 86 de c5 ff 49 83 3f 00 0f 84 RSP: 0018:ffffc90003ecf9c0 EFLAGS: 00010206 RAX: ffffffff825e02cf RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000cbbb000 RSI: 0000000000000873 RDI: 0000000000000874 RBP: 0000000000000006 R08: ffff88801c7e9e00 R09: 0000000000000008 R10: 0000000000000007 R11: 0000000000000002 R12: dffffc0000000000 R13: ffff888143acf960 R14: 0000000000000000 R15: 0000000000000030 FS: 00007fb14932a6c0(0000) GS:ffff888125c1d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000009e000 CR3: 000000007d24a000 CR4: 00000000003526f0 Call Trace: kobject_move+0x3a5/0x4f0 lib/kobject.c:569 device_move+0xe0/0x700 drivers/base/core.c:4609 hci_conn_del_sysfs+0xb8/0x170 net/bluetooth/hci_sysfs.c:75 hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline] hci_conn_del+0x8ff/0xcb0 net/bluetooth/hci_conn.c:1173 hci_conn_hash_flush+0x191/0x230 net/bluetooth/hci_conn.c:2561 hci_dev_do_reset net/bluetooth/hci_core.c:566 [inline] hci_dev_reset+0x44b/0x6b0 net/bluetooth/hci_core.c:610 sock_do_ioctl+0xd9/0x300 net/socket.c:1190 sock_ioctl+0x576/0x790 net/socket.c:1311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb14858e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb14932a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fb1487b5fa0 RCX: 00007fb14858e929 RDX: 0000000000000000 RSI: 00000000400448cb RDI: 0000000000000006 RBP: 00007fb148610b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb1487b5fa0 R15: 00007ffd3f5b1588 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:kernfs_rename_ns+0x3a/0x7a0 fs/kernfs/dir.c:1747 Code: ec 48 48 89 cb 48 89 54 24 10 49 89 f5 49 89 fe 49 bc 00 00 00 00 00 fc ff df e8 d1 5b 62 ff 4d 8d 7e 30 4c 89 fd 48 c1 ed 03 <42> 80 7c 25 00 00 74 08 4c 89 ff e8 86 de c5 ff 49 83 3f 00 0f 84 RSP: 0018:ffffc90003ecf9c0 EFLAGS: 00010206 RAX: ffffffff825e02cf RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000cbbb000 RSI: 0000000000000873 RDI: 0000000000000874 RBP: 0000000000000006 R08: ffff88801c7e9e00 R09: 0000000000000008 R10: 0000000000000007 R11: 0000000000000002 R12: dffffc0000000000 R13: ffff888143acf960 R14: 0000000000000000 R15: 0000000000000030 FS: 00007fb14932a6c0(0000) GS:ffff888125c1d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000002a0fb8 CR3: 000000007d24a000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: ec in (%dx),%al 1: 48 rex.W 2: 48 89 cb mov %rcx,%rbx 5: 48 89 54 24 10 mov %rdx,0x10(%rsp) a: 49 89 f5 mov %rsi,%r13 d: 49 89 fe mov %rdi,%r14 10: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 17: fc ff df 1a: e8 d1 5b 62 ff call 0xff625bf0 1f: 4d 8d 7e 30 lea 0x30(%r14),%r15 23: 4c 89 fd mov %r15,%rbp 26: 48 c1 ed 03 shr $0x3,%rbp * 2a: 42 80 7c 25 00 00 cmpb $0x0,0x0(%rbp,%r12,1) <-- trapping instruction 30: 74 08 je 0x3a 32: 4c 89 ff mov %r15,%rdi 35: e8 86 de c5 ff call 0xffc5dec0 3a: 49 83 3f 00 cmpq $0x0,(%r15) 3e: 0f .byte 0xf 3f: 84 .byte 0x84