kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 19487 Comm: kworker/u4:4 Not tainted 5.3.0-rc5+ #120 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound flush_to_ldisc RIP: 0010:skb_put+0x35/0x1d0 net/core/skbuff.c:1861 Code: 89 f5 41 54 49 89 fc 53 4d 8d b4 24 b8 00 00 00 48 83 ec 08 e8 5c 4d de fb 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4c RSP: 0018:ffff8880567dfb28 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff88809094ba80 RCX: ffffffff850c72de RDX: 0000000000000017 RSI: ffffffff859424a4 RDI: 0000000000000000 RBP: ffff8880567dfb58 R08: ffff88809aaf0700 R09: ffffed1012434d44 R10: ffffed1012434d43 R11: ffff8880921a6a1f R12: 0000000000000000 R13: 0000000000000001 R14: 00000000000000b8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f982582d028 CR3: 0000000061cb2000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_put_data include/linux/skbuff.h:2221 [inline] bcsp_unslip_one_byte drivers/bluetooth/hci_bcsp.c:436 [inline] bcsp_recv+0x9a8/0x13a0 drivers/bluetooth/hci_bcsp.c:597 hci_uart_tty_receive+0x279/0x790 drivers/bluetooth/hci_ldisc.c:613 tty_ldisc_receive_buf+0x15f/0x1c0 drivers/tty/tty_buffer.c:465 tty_port_default_receive_buf+0x7d/0xb0 drivers/tty/tty_port.c:38 receive_buf drivers/tty/tty_buffer.c:481 [inline] flush_to_ldisc+0x222/0x390 drivers/tty/tty_buffer.c:533 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x361/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 6aa24146121fe344 ]--- RIP: 0010:skb_put+0x35/0x1d0 net/core/skbuff.c:1861 Code: 89 f5 41 54 49 89 fc 53 4d 8d b4 24 b8 00 00 00 48 83 ec 08 e8 5c 4d de fb 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4c RSP: 0018:ffff8880567dfb28 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff88809094ba80 RCX: ffffffff850c72de RDX: 0000000000000017 RSI: ffffffff859424a4 RDI: 0000000000000000 RBP: ffff8880567dfb58 R08: ffff88809aaf0700 R09: ffffed1012434d44 R10: ffffed1012434d43 R11: ffff8880921a6a1f R12: 0000000000000000 R13: 0000000000000001 R14: 00000000000000b8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007feffad97518 CR3: 00000000a8def000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400