kasan: GPF could be caused by NULL-ptr deref or user memory access hci_le_enh_conn_complete_evt net/bluetooth/hci_event.c:4970 [inline] hci_le_meta_evt+0x738/0x39c0 net/bluetooth/hci_event.c:5649 general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 17796 Comm: kworker/u5:1 Not tainted 4.19.136-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: hci3 hci_rx_work RIP: 0010:hci_phy_link_complete_evt.isra.0+0x24a/0x7a0 net/bluetooth/hci_event.c:4682 Code: 48 c1 ea 03 80 3c 02 00 0f 85 60 05 00 00 48 8b 9d 28 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 23 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffff88804856fa78 EFLAGS: 00010202 hci_event_packet+0x1a29/0x858f net/bluetooth/hci_event.c:5885 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff867c041f RDX: 0000000000000002 RSI: ffffffff867c042c RDI: 0000000000000010 RBP: ffff888085c5ab00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88804ffe5340 R14: 00000000000000c8 R15: ffff88804ffe4410 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000052a178 CR3: 000000008632e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 hci_rx_work+0x46b/0xa90 net/bluetooth/hci_core.c:4359 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 Call Trace: hci_event_packet+0x1973/0x858f net/bluetooth/hci_event.c:5898 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x30b/0x410 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 kobject_add_internal failed for hci0:200 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device hci_rx_work+0x46b/0xa90 net/bluetooth/hci_core.c:4359 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x30b/0x410 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Modules linked in: ---[ end trace 27356165695118d6 ]--- RIP: 0010:hci_phy_link_complete_evt.isra.0+0x24a/0x7a0 net/bluetooth/hci_event.c:4682 Code: 48 c1 ea 03 80 3c 02 00 0f 85 60 05 00 00 48 8b 9d 28 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 23 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffff88804856fa78 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff867c041f RDX: 0000000000000002 RSI: ffffffff867c042c RDI: 0000000000000010 RBP: ffff888085c5ab00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88804ffe5340 R14: 00000000000000c8 R15: ffff88804ffe4410 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000742138 CR3: 00000000a3e2f000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400