Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 0 UID: 0 PID: 11644 Comm: syz-executor Not tainted 6.15.0-rc3-syzkaller-00019-gbc3372351d0c #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:kernfs_rename_ns+0x3b/0xa50 fs/kernfs/dir.c:1744 Code: 48 89 fb 4c 8d 7b 30 48 83 ec 20 48 89 14 24 48 89 4c 24 08 e8 56 e0 5b ff 4c 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 f7 08 00 00 48 8b 43 30 48 85 c0 0f 84 a6 08 00 RSP: 0018:ffffc90003edf9a8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff825f6f9a RDI: 0000000000000000 RBP: ffff88814368d1e0 R08: 0000000000000007 R09: 0000000000000000 R10: 000000007fffffff R11: 0000000000000000 R12: ffff88802ff137a0 R13: ffff888031e68040 R14: ffff888143681480 R15: 0000000000000030 FS: 0000000000000000(0000) GS:ffff8881249b2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6a9f26533a CR3: 0000000059c9e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: kobject_move+0x127/0x260 lib/kobject.c:569 device_move+0xa9/0x10d0 drivers/base/core.c:4583 hci_conn_del_sysfs+0x81/0x180 net/bluetooth/hci_sysfs.c:75 hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline] hci_conn_del+0x55f/0xdc0 net/bluetooth/hci_conn.c:1167 hci_conn_hash_flush+0x186/0x260 net/bluetooth/hci_conn.c:2702 hci_dev_close_sync+0x602/0x11d0 net/bluetooth/hci_sync.c:5225 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:483 hci_unregister_dev+0x213/0x620 net/bluetooth/hci_core.c:2678 vhci_release+0x79/0xf0 drivers/bluetooth/hci_vhci.c:665 __fput+0x3ff/0xb70 fs/file_table.c:465 task_work_run+0x14d/0x240 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xafb/0x2c30 kernel/exit.c:953 do_group_exit+0xd3/0x2a0 kernel/exit.c:1102 __do_sys_exit_group kernel/exit.c:1113 [inline] __se_sys_exit_group kernel/exit.c:1111 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1111 x64_sys_call+0x1530/0x1730 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2d69f8e169 Code: Unable to access opcode bytes at 0x7f2d69f8e13f. RSP: 002b:00007ffd2f718e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2d69f8e169 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000043 RBP: 00007f2d69fee8d0 R08: 00007ffd2f716c07 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000003 R14: 00000000ffffffff R15: 00007ffd2f719020 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:kernfs_rename_ns+0x3b/0xa50 fs/kernfs/dir.c:1744 Code: 48 89 fb 4c 8d 7b 30 48 83 ec 20 48 89 14 24 48 89 4c 24 08 e8 56 e0 5b ff 4c 89 fa 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 f7 08 00 00 48 8b 43 30 48 85 c0 0f 84 a6 08 00 RSP: 0018:ffffc90003edf9a8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff825f6f9a RDI: 0000000000000000 RBP: ffff88814368d1e0 R08: 0000000000000007 R09: 0000000000000000 R10: 000000007fffffff R11: 0000000000000000 R12: ffff88802ff137a0 R13: ffff888031e68040 R14: ffff888143681480 R15: 0000000000000030 FS: 0000000000000000(0000) GS:ffff8881249b2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f6f0ff8 CR3: 000000001293a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 89 fb mov %rdi,%rbx 3: 4c 8d 7b 30 lea 0x30(%rbx),%r15 7: 48 83 ec 20 sub $0x20,%rsp b: 48 89 14 24 mov %rdx,(%rsp) f: 48 89 4c 24 08 mov %rcx,0x8(%rsp) 14: e8 56 e0 5b ff call 0xff5be06f 19: 4c 89 fa mov %r15,%rdx 1c: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 23: fc ff df 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 f7 08 00 00 jne 0x92b 34: 48 8b 43 30 mov 0x30(%rbx),%rax 38: 48 85 c0 test %rax,%rax 3b: 0f .byte 0xf 3c: 84 .byte 0x84 3d: a6 cmpsb %es:(%rdi),%ds:(%rsi) 3e: 08 00 or %al,(%rax)