================================================================== BUG: KCSAN: data-race in __hci_req_sync / hci_req_sync_complete write to 0xffff888105e14a78 of 4 bytes by task 2041 on cpu 0: hci_req_sync_complete+0x5c/0x110 net/bluetooth/hci_request.c:109 hci_event_packet+0x3a87/0xffb0 net/bluetooth/hci_event.c:6336 hci_rx_work+0x334/0x490 net/bluetooth/hci_core.c:4971 process_one_work+0x3e1/0x950 kernel/workqueue.c:2275 worker_thread+0x64a/0xaa0 kernel/workqueue.c:2421 kthread+0x1fd/0x220 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 read to 0xffff888105e14a78 of 4 bytes by task 8451 on cpu 1: __hci_req_sync+0xdc/0x420 net/bluetooth/hci_request.c:233 hci_req_sync+0x71/0x90 net/bluetooth/hci_request.c:279 hci_dev_cmd+0x244/0x590 net/bluetooth/hci_core.c:2049 hci_sock_ioctl+0x2e3/0x630 net/bluetooth/hci_sock.c:1052 sock_do_ioctl+0x4d/0x210 net/socket.c:1037 sock_ioctl+0x321/0x510 net/socket.c:1177 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:739 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:739 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 8451 Comm: syz-executor.0 Not tainted 5.11.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================