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: 2933 Comm: kworker/0:2 Not tainted 5.0.0-rc6-next-20190215 #36 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events hci_uart_write_work RIP: 0010:hci_uart_write_work+0x1b6/0x710 drivers/bluetooth/hci_ldisc.c:180 Code: 0f 85 6a 04 00 00 49 8b b4 24 c8 00 00 00 4c 89 ef e8 9e 2a 4f 02 89 c6 48 8b 45 d0 48 8d b8 5c 10 00 00 48 89 f8 48 c1 e8 03 <0f> b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 1d RSP: 0018:ffff88800b947cb0 EFLAGS: 00010203 RAX: 000000000000020b RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 000000000000105c RBP: ffff88800b947d30 R08: ffff88800b972140 R09: ffff88800b972a08 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880631c5e40 R13: ffff88803e4308c0 R14: ffff888062ec1d68 R15: ffff8880631c5eb0 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004b4a3c CR3: 000000007fe89000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x98e/0x1790 kernel/workqueue.c:2267 worker_thread+0x98/0xe40 kernel/workqueue.c:2413 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace a8e8fd05bc9907d7 ]--- RIP: 0010:hci_uart_write_work+0x1b6/0x710 drivers/bluetooth/hci_ldisc.c:180 Code: 0f 85 6a 04 00 00 49 8b b4 24 c8 00 00 00 4c 89 ef e8 9e 2a 4f 02 89 c6 48 8b 45 d0 48 8d b8 5c 10 00 00 48 89 f8 48 c1 e8 03 <0f> b6 14 18 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 1d RSP: 0018:ffff88800b947cb0 EFLAGS: 00010203 RAX: 000000000000020b RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 000000000000105c RBP: ffff88800b947d30 R08: ffff88800b972140 R09: ffff88800b972a08 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880631c5e40 R13: ffff88803e4308c0 R14: ffff888062ec1d68 R15: ffff8880631c5eb0 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004b4a3c CR3: 000000007fe89000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400