Oops: stack segment: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 5855 Comm: kworker/u9:2 Not tainted 6.16.0-rc6-syzkaller-01646-g56613001dfc9 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: hci5 hci_cmd_sync_work 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 61 ce 63 ff 4d 8d 7e 30 4c 89 fd 48 c1 ed 03 <42> 80 7c 25 00 00 74 08 4c 89 ff e8 66 dd c5 ff 49 83 3f 00 0f 84 RSP: 0018:ffffc900040cf680 EFLAGS: 00010206 RAX: ffffffff825c5bef RBX: 0000000000000000 RCX: ffff888078469e00 RDX: 0000000000000000 RSI: ffff888022a83f00 RDI: 0000000000000000 RBP: 0000000000000006 R08: ffff888078469e00 R09: 0000000000000008 R10: 0000000000000007 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888022a83f00 R14: 0000000000000000 R15: 0000000000000030 FS: 0000000000000000(0000) GS:ffff888125c15000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c36626a CR3: 000000003329a000 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_abort_conn_sync+0x5d1/0xdf0 net/bluetooth/hci_sync.c:5689 hci_cmd_sync_work+0x213/0x3a0 net/bluetooth/hci_sync.c:332 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 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 61 ce 63 ff 4d 8d 7e 30 4c 89 fd 48 c1 ed 03 <42> 80 7c 25 00 00 74 08 4c 89 ff e8 66 dd c5 ff 49 83 3f 00 0f 84 RSP: 0018:ffffc900040cf680 EFLAGS: 00010206 RAX: ffffffff825c5bef RBX: 0000000000000000 RCX: ffff888078469e00 RDX: 0000000000000000 RSI: ffff888022a83f00 RDI: 0000000000000000 RBP: 0000000000000006 R08: ffff888078469e00 R09: 0000000000000008 R10: 0000000000000007 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888022a83f00 R14: 0000000000000000 R15: 0000000000000030 FS: 0000000000000000(0000) GS:ffff888125c15000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c36626a CR3: 000000003329a000 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 61 ce 63 ff call 0xff63ce80 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 66 dd c5 ff call 0xffc5dda0 3a: 49 83 3f 00 cmpq $0x0,(%r15) 3e: 0f .byte 0xf 3f: 84 .byte 0x84