[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.3' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 75.361070][ T8] Bluetooth: : Invalid header checksum [ 75.367020][ T8] Bluetooth: : Invalid header checksum [ 75.373787][ T8] ================================================================== [ 75.382373][ T8] BUG: KASAN: null-ptr-deref in __pm_runtime_resume+0x154/0x180 [ 75.390191][ T8] Write of size 4 at addr 0000000000000388 by task kworker/u4:0/8 [ 75.398007][ T8] [ 75.400324][ T8] CPU: 0 PID: 8 Comm: kworker/u4:0 Not tainted 5.15.0-rc3-syzkaller #0 [ 75.408966][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.419110][ T8] Workqueue: events_unbound flush_to_ldisc [ 75.425045][ T8] Call Trace: [ 75.428335][ T8] dump_stack_lvl+0xcd/0x134 [ 75.432968][ T8] kasan_report.cold+0x66/0xdf [ 75.437761][ T8] ? __pm_runtime_resume+0x154/0x180 [ 75.443117][ T8] kasan_check_range+0x13d/0x180 [ 75.448344][ T8] __pm_runtime_resume+0x154/0x180 [ 75.453555][ T8] h5_recv+0x2c4/0x680 [ 75.457678][ T8] ? h5_slip_one_byte+0x150/0x150 [ 75.462702][ T8] hci_uart_tty_receive+0x24d/0x710 [ 75.467897][ T8] ? hci_uart_send_frame+0x6c0/0x6c0 [ 75.473171][ T8] tty_ldisc_receive_buf+0x14d/0x190 [ 75.478452][ T8] tty_port_default_receive_buf+0x6e/0xa0 [ 75.484184][ T8] flush_to_ldisc+0x20d/0x380 [ 75.488861][ T8] process_one_work+0x9bf/0x16b0 [ 75.494953][ T8] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 75.500490][ T8] ? rwlock_bug.part.0+0x90/0x90 [ 75.505564][ T8] ? _raw_spin_lock_irq+0x41/0x50 [ 75.510630][ T8] worker_thread+0x658/0x11f0 [ 75.515332][ T8] ? process_one_work+0x16b0/0x16b0 [ 75.520567][ T8] kthread+0x3e5/0x4d0 [ 75.524726][ T8] ? set_kthread_struct+0x130/0x130 [ 75.529917][ T8] ret_from_fork+0x1f/0x30 [ 75.534337][ T8] ================================================================== [ 75.542391][ T8] Disabling lock debugging due to kernel taint [ 75.549436][ T8] Kernel panic - not syncing: panic_on_warn set ... [ 75.556119][ T8] CPU: 0 PID: 8 Comm: kworker/u4:0 Tainted: G B 5.15.0-rc3-syzkaller #0 [ 75.566033][ T8] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.576808][ T8] Workqueue: events_unbound flush_to_ldisc [ 75.582632][ T8] Call Trace: [ 75.585976][ T8] dump_stack_lvl+0xcd/0x134 [ 75.590563][ T8] panic+0x2b0/0x6dd [ 75.594453][ T8] ? __warn_printk+0xf3/0xf3 [ 75.599034][ T8] ? preempt_schedule_common+0x59/0xc0 [ 75.604495][ T8] ? __pm_runtime_resume+0x154/0x180 [ 75.609888][ T8] ? preempt_schedule_thunk+0x16/0x18 [ 75.615275][ T8] ? trace_hardirqs_on+0x38/0x1c0 [ 75.620491][ T8] ? trace_hardirqs_on+0x51/0x1c0 [ 75.625688][ T8] ? __pm_runtime_resume+0x154/0x180 [ 75.630969][ T8] ? __pm_runtime_resume+0x154/0x180 [ 75.636452][ T8] end_report.cold+0x63/0x6f [ 75.641151][ T8] kasan_report.cold+0x71/0xdf [ 75.645933][ T8] ? __pm_runtime_resume+0x154/0x180 [ 75.651231][ T8] kasan_check_range+0x13d/0x180 [ 75.656773][ T8] __pm_runtime_resume+0x154/0x180 [ 75.661885][ T8] h5_recv+0x2c4/0x680 [ 75.665951][ T8] ? h5_slip_one_byte+0x150/0x150 [ 75.671000][ T8] hci_uart_tty_receive+0x24d/0x710 [ 75.676394][ T8] ? hci_uart_send_frame+0x6c0/0x6c0 [ 75.681950][ T8] tty_ldisc_receive_buf+0x14d/0x190 [ 75.687250][ T8] tty_port_default_receive_buf+0x6e/0xa0 [ 75.693149][ T8] flush_to_ldisc+0x20d/0x380 [ 75.697829][ T8] process_one_work+0x9bf/0x16b0 [ 75.702949][ T8] ? pwq_dec_nr_in_flight+0x2a0/0x2a0 [ 75.708499][ T8] ? rwlock_bug.part.0+0x90/0x90 [ 75.713439][ T8] ? _raw_spin_lock_irq+0x41/0x50 [ 75.718545][ T8] worker_thread+0x658/0x11f0 [ 75.723217][ T8] ? process_one_work+0x16b0/0x16b0 [ 75.728411][ T8] kthread+0x3e5/0x4d0 [ 75.732503][ T8] ? set_kthread_struct+0x130/0x130 [ 75.737784][ T8] ret_from_fork+0x1f/0x30 [ 75.742551][ T8] Kernel Offset: disabled [ 75.746867][ T8] Rebooting in 86400 seconds..