general protection fault, probably for non-canonical address 0xdffffc0000000018: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7]
CPU: 1 PID: 185 Comm: kworker/u4:3 Not tainted 5.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound flush_to_ldisc
RIP: 0010:skb_tail_pointer include/linux/skbuff.h:2204 [inline]
RIP: 0010:skb_put+0x31/0x1e0 net/core/skbuff.c:1860
Code: 41 54 53 48 83 ec 18 41 89 f5 48 89 fb 49 be 00 00 00 00 00 fc ff df e8 4d d6 21 fb 48 8d bb c0 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 05 e8 23 95 5f fb 4c 8b bb c0 00 00 00 4c 8d a3
RSP: 0018:ffffc90000e37ab0 EFLAGS: 00010206
RAX: 0000000000000018 RBX: 0000000000000000 RCX: ffff8880a8d2c340
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00000000000000c0
RBP: 1ffff110121a6fa2 R08: ffffffff85bb0cbe R09: ffffffff85bb0bb9
R10: ffff8880a8d2c340 R11: 0000000000000002 R12: ffff888090d37d08
R13: 0000000000000001 R14: dffffc0000000000 R15: 000000000000005e
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004ffb38 CR3: 00000000a1be1000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 skb_put_data include/linux/skbuff.h:2284 [inline]
 bcsp_unslip_one_byte drivers/bluetooth/hci_bcsp.c:436 [inline]
 bcsp_recv+0xa82/0x1610 drivers/bluetooth/hci_bcsp.c:598
 hci_uart_tty_receive+0x132/0x1c0 drivers/bluetooth/hci_ldisc.c:613
 tty_ldisc_receive_buf+0x12b/0x170 drivers/tty/tty_buffer.c:465
 tty_port_default_receive_buf+0x77/0xa0 drivers/tty/tty_port.c:38
 receive_buf drivers/tty/tty_buffer.c:481 [inline]
 flush_to_ldisc+0x2f2/0x520 drivers/tty/tty_buffer.c:533
 process_one_work+0x76e/0xfd0 kernel/workqueue.c:2266
 worker_thread+0xa7f/0x1450 kernel/workqueue.c:2412
 kthread+0x353/0x380 kernel/kthread.c:268
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace df6392c08f33b152 ]---
RIP: 0010:skb_tail_pointer include/linux/skbuff.h:2204 [inline]
RIP: 0010:skb_put+0x31/0x1e0 net/core/skbuff.c:1860
Code: 41 54 53 48 83 ec 18 41 89 f5 48 89 fb 49 be 00 00 00 00 00 fc ff df e8 4d d6 21 fb 48 8d bb c0 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 05 e8 23 95 5f fb 4c 8b bb c0 00 00 00 4c 8d a3
RSP: 0018:ffffc90000e37ab0 EFLAGS: 00010206
RAX: 0000000000000018 RBX: 0000000000000000 RCX: ffff8880a8d2c340
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00000000000000c0
RBP: 1ffff110121a6fa2 R08: ffffffff85bb0cbe R09: ffffffff85bb0bb9
R10: ffff8880a8d2c340 R11: 0000000000000002 R12: ffff888090d37d08
R13: 0000000000000001 R14: dffffc0000000000 R15: 000000000000005e
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f4f07592f8 CR3: 000000009e1e2000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400