syzbot


INFO: trying to register non-static key in hci_uart_tty_receive

Status: auto-closed as invalid on 2019/10/28 14:58
Reported-by: syzbot+13a3ab5c28d3fb67bacc@syzkaller.appspotmail.com
First crash: 1191d, last: 1191d
similar bugs (4):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: trying to register non-static key in hci_uart_tty_receive 1 1318d 1318d 0/1 auto-closed as invalid on 2019/10/22 04:49
upstream INFO: trying to register non-static key in hci_uart_tty_receive (2) 1 1102d 1098d 0/24 auto-closed as invalid on 2020/03/26 00:10
linux-4.19 INFO: trying to register non-static key in hci_uart_tty_receive (2) 1 84d 84d 0/1 upstream: reported on 2022/09/09 15:36
upstream INFO: trying to register non-static key in hci_uart_tty_receive (3) 12 68d 406d 0/24 closed as dup on 2022/08/29 15:45

Sample crash report:
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 1 PID: 562 Comm: kworker/u4:3 Not tainted 5.3.0-rc6-next-20190827 #74
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound flush_to_ldisc
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 assign_lock_key kernel/locking/lockdep.c:881 [inline]
 register_lock_class+0x179e/0x1850 kernel/locking/lockdep.c:1190
 __lock_acquire+0xf4/0x4a00 kernel/locking/lockdep.c:3837
 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4487
 percpu_down_read include/linux/percpu-rwsem.h:40 [inline]
 hci_uart_tty_receive+0xcf/0x6e0 drivers/bluetooth/hci_ldisc.c:603
 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

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2019/08/29 14:57 linux-next ed2393ca0910 fd37b39e .config log report
* Struck through repros no longer work on HEAD.