kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Bluetooth: Can't allocate mem for new packet Modules linked in: CPU: 0 PID: 12931 Comm: kworker/u4:4 Not tainted 4.14.210-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound flush_to_ldisc task: ffff888056532000 task.stack: ffff888056720000 RIP: 0010:skb_tail_pointer include/linux/skbuff.h:2029 [inline] RIP: 0010:skb_put+0x29/0x170 net/core/skbuff.c:1694 RSP: 0018:ffff888056727b90 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000 RDX: 000000000000001a RSI: 0000000000000003 RDI: 00000000000000d0 RBP: 0000000000000000 R08: 0000000000000025 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000003 R13: dffffc0000000000 R14: ffff8880b523ae80 R15: ffff88809b3de4e1 FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f74e16be000 CR3: 00000000b2c1a000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_put_data include/linux/skbuff.h:2109 [inline] ll_recv+0x6e9/0x1820 drivers/bluetooth/hci_ll.c:416 hci_uart_tty_receive+0x1ec/0x4c0 drivers/bluetooth/hci_ldisc.c:617 tty_ldisc_receive_buf+0x12e/0x170 drivers/tty/tty_buffer.c:459 tty_port_default_receive_buf+0x6e/0xa0 drivers/tty/tty_port.c:37 receive_buf drivers/tty/tty_buffer.c:475 [inline] flush_to_ldisc+0x1dd/0x3f0 drivers/tty/tty_buffer.c:527 process_one_work+0x793/0x14a0 kernel/workqueue.c:2116 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2250 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 00 00 Bearer rejected, not supported in standalone mode 41 55 41 54 41 89 f4 55 48 89 fd 53 e8 7f a4 7d fb 48 8d bd d0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 24 01 00 00 48 8d bd c8 00 00 00 4c 8b ad d0 RIP: skb_tail_pointer include/linux/skbuff.h:2029 [inline] RSP: ffff888056727b90 RIP: skb_put+0x29/0x170 net/core/skbuff.c:1694 RSP: ffff888056727b90 ---[ end trace 887bf45de7380797 ]---