Oops: stack segment: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 12479 Comm: syz.7.1597 Not tainted 6.16.0-rc6-next-20250714-syzkaller #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 c1 c4 5f ff 4d 8d 7e 30 4c 89 fd 48 c1 ed 03 <42> 80 7c 25 00 00 74 08 4c 89 ff e8 76 7c c4 ff 49 83 3f 00 0f 84 RSP: 0018:ffffc900037270a0 EFLAGS: 00010206 RAX: ffffffff826050df RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000cd94000 RSI: 0000000000046d9b RDI: 0000000000046d9c RBP: 0000000000000006 R08: ffff888025831e00 R09: 0000000000000008 R10: 0000000000000007 R11: 0000000000000002 R12: dffffc0000000000 R13: ffff888020ac7690 R14: 0000000000000000 R15: 0000000000000030 FS: 00007faf7a8e26c0(0000) GS:ffff8881258b4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f59c39b2000 CR3: 00000000770e4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000000032e7 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: kobject_move+0x3a5/0x4f0 lib/kobject.c:569 device_move+0xe0/0x700 drivers/base/core.c:4606 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_disconnect_all_sync+0x1b5/0x350 net/bluetooth/hci_sync.c:5712 hci_suspend_sync+0x3b8/0xbf0 net/bluetooth/hci_sync.c:6189 hci_suspend_dev+0x28d/0x4d0 net/bluetooth/hci_core.c:2849 hci_suspend_notifier+0xf2/0x290 net/bluetooth/hci_core.c:2420 notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85 notifier_call_chain_robust kernel/notifier.c:120 [inline] blocking_notifier_call_chain_robust+0x85/0x100 kernel/notifier.c:345 pm_notifier_call_chain_robust+0x2c/0x60 kernel/power/main.c:103 snapshot_open+0x19c/0x280 kernel/power/user.c:77 misc_open+0x2bc/0x330 drivers/char/misc.c:161 chrdev_open+0x4c9/0x5e0 fs/char_dev.c:414 do_dentry_open+0x953/0x13f0 fs/open.c:965 vfs_open+0x3b/0x340 fs/open.c:1095 do_open fs/namei.c:3887 [inline] path_openat+0x2ee5/0x3830 fs/namei.c:4046 do_filp_open+0x1fa/0x410 fs/namei.c:4073 do_sys_openat2+0x121/0x1c0 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_openat fs/open.c:1466 [inline] __se_sys_openat fs/open.c:1461 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1461 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: 0033:0x7faf7998e929 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:00007faf7a8e2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007faf79bb5fa0 RCX: 00007faf7998e929 RDX: 0000000000020000 RSI: 0000200000000000 RDI: ffffffffffffff9c RBP: 00007faf79a10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007faf79bb5fa0 R15: 00007ffc0aff4618 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 c1 c4 5f ff 4d 8d 7e 30 4c 89 fd 48 c1 ed 03 <42> 80 7c 25 00 00 74 08 4c 89 ff e8 76 7c c4 ff 49 83 3f 00 0f 84 RSP: 0018:ffffc900037270a0 EFLAGS: 00010206 RAX: ffffffff826050df RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000cd94000 RSI: 0000000000046d9b RDI: 0000000000046d9c RBP: 0000000000000006 R08: ffff888025831e00 R09: 0000000000000008 R10: 0000000000000007 R11: 0000000000000002 R12: dffffc0000000000 R13: ffff888020ac7690 R14: 0000000000000000 R15: 0000000000000030 FS: 00007faf7a8e26c0(0000) GS:ffff8881258b4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcd36382178 CR3: 00000000770e4000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000000032e7 DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- 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 c1 c4 5f ff call 0xff5fc4e0 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 76 7c c4 ff call 0xffc47cb0 3a: 49 83 3f 00 cmpq $0x0,(%r15) 3e: 0f .byte 0xf 3f: 84 .byte 0x84