netlink: 'syz.2.118': attribute type 4 has an invalid length. Bluetooth: hci0: Opcode 0x0c1a failed: -4 ------------[ cut here ]------------ ODEBUG: free active (active state 0) object: ffff888075b7c978 object type: timer_list hint: hci_cmd_timeout+0x0/0x1e0 WARNING: CPU: 0 PID: 5668 at lib/debugobjects.c:517 debug_print_object+0x17a/0x1f0 lib/debugobjects.c:514 Modules linked in: CPU: 0 UID: 0 PID: 5668 Comm: syz.2.118 Not tainted 6.12.0-rc1-syzkaller-00196-ga354733c738d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:debug_print_object+0x17a/0x1f0 lib/debugobjects.c:514 Code: e8 3b 45 3c fd 4c 8b 0b 48 c7 c7 20 02 61 8c 48 8b 74 24 08 48 89 ea 44 89 e1 4d 89 f8 ff 34 24 e8 3b 90 93 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 e4 d5 5a 0b 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 RSP: 0018:ffffc900157b7818 EFLAGS: 00010286 RAX: 5f50af5806448700 RBX: ffffffff8c0cd900 RCX: 0000000000040000 RDX: ffffc900097c1000 RSI: 000000000000a7b6 RDI: 000000000000a7b7 RBP: ffffffff8c6103a0 R08: ffffffff8155daa2 R09: fffffbfff1cf9fd8 R10: dffffc0000000000 R11: fffffbfff1cf9fd8 R12: 0000000000000000 R13: ffffffff8c6102b8 R14: dffffc0000000000 R15: ffff888075b7c978 FS: 00007fe347b936c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9687467d60 CR3: 0000000029036000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __debug_check_no_obj_freed lib/debugobjects.c:989 [inline] debug_check_no_obj_freed+0x45b/0x580 lib/debugobjects.c:1019 slab_free_hook mm/slub.c:2274 [inline] slab_free mm/slub.c:4580 [inline] kfree+0x11f/0x440 mm/slub.c:4728 hci_release_dev+0x1525/0x16b0 net/bluetooth/hci_core.c:2759 bt_host_release+0x83/0x90 net/bluetooth/hci_sysfs.c:94 device_release+0x99/0x1c0 kobject_cleanup lib/kobject.c:689 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x22f/0x480 lib/kobject.c:737 hci_dev_put include/net/bluetooth/hci_core.h:1581 [inline] hci_dev_cmd+0x296/0xa50 net/bluetooth/hci_core.c:763 sock_do_ioctl+0x158/0x460 net/socket.c:1227 sock_ioctl+0x626/0x8e0 net/socket.c:1346 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/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe346d7dff9 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:00007fe347b93038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe346f35f80 RCX: 00007fe346d7dff9 RDX: 0000000020000240 RSI: 00000000400448dd RDI: 000000000000000c RBP: 00007fe346df0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fe346f35f80 R15: 00007ffda4d03658