[ OK ] Reached target Basic System. Starting getty on tty2-tty6 if dbus and logind are not available... Starting Permit User Sessions... Starting System Logging Service... [ OK ] Started Regular background program processing daemon. Starting OpenBSD Secure Shell server... [ OK ] Started Permit User Sessions. [ OK ] Started System Logging Service. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.46' (ECDSA) to the list of known hosts. syzkaller login: [ 66.581630][ T29] audit: type=1400 audit(1596776306.076:8): avc: denied { execmem } for pid=6840 comm="syz-executor561" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 66.612891][ T6847] IPVS: ftp: loaded support on port[0] = 21 [ 66.619913][ T6849] IPVS: ftp: loaded support on port[0] = 21 [ 66.626397][ T6848] IPVS: ftp: loaded support on port[0] = 21 [ 66.647489][ T6850] IPVS: ftp: loaded support on port[0] = 21 [ 66.649368][ T6852] IPVS: ftp: loaded support on port[0] = 21 [ 66.655779][ T6851] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 69.924289][ T23] Bluetooth: hci3: command 0x0409 tx timeout [ 69.924300][ T12] Bluetooth: hci0: command 0x0409 tx timeout [ 69.924671][ T12] Bluetooth: hci1: command 0x0409 tx timeout [ 69.943819][ T12] Bluetooth: hci2: command 0x0409 tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 70.013490][ T12] Bluetooth: hci4: command 0x0409 tx timeout [ 70.019679][ T12] Bluetooth: hci5: command 0x0409 tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 72.004621][ T23] Bluetooth: hci2: command 0x041b tx timeout [ 72.013327][ T23] Bluetooth: hci1: command 0x041b tx timeout [ 72.024197][ T23] Bluetooth: hci3: command 0x041b tx timeout [ 72.036477][ T23] Bluetooth: hci0: command 0x041b tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 72.083192][ T23] Bluetooth: hci5: command 0x041b tx timeout [ 72.090815][ T23] Bluetooth: hci4: command 0x041b tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 72.908632][ T6995] ================================================================== [ 72.917352][ T6995] BUG: KASAN: use-after-free in sco_chan_del+0xe6/0x430 [ 72.924522][ T6995] Write of size 4 at addr ffff88809f1a2010 by task syz-executor561/6995 [ 72.935706][ T6995] [ 72.938094][ T6995] CPU: 0 PID: 6995 Comm: syz-executor561 Not tainted 5.8.0-syzkaller #0 [ 72.946559][ T6995] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 executing program executing program executing program executing program executing program executing program executing program executing program [ 72.956727][ T6995] Call Trace: [ 72.960211][ T6995] dump_stack+0x18f/0x20d [ 72.964702][ T6995] ? sco_chan_del+0xe6/0x430 [ 72.969322][ T6995] ? sco_chan_del+0xe6/0x430 [ 72.974015][ T6995] ? __sock_release+0x280/0x280 [ 72.979055][ T6995] print_address_description.constprop.0.cold+0xae/0x436 [ 72.986137][ T6995] ? sco_chan_del+0xab/0x430 [ 72.990763][ T6995] ? vprintk_func+0x97/0x1a6 [ 72.995391][ T6995] ? sco_chan_del+0xe6/0x430 [ 73.000020][ T6995] kasan_report.cold+0x1f/0x37 executing program executing program executing program [ 73.004820][ T6995] ? sco_chan_del+0xe6/0x430 [ 73.009729][ T6995] check_memory_region+0x13d/0x180 [ 73.015140][ T6995] sco_chan_del+0xe6/0x430 [ 73.019729][ T6995] __sco_sock_close+0x16e/0x5b0 [ 73.024960][ T6995] sco_sock_release+0x69/0x290 [ 73.029909][ T6995] __sock_release+0xcd/0x280 [ 73.034884][ T6995] sock_close+0x18/0x20 [ 73.039053][ T6995] __fput+0x33c/0x880 [ 73.043045][ T6995] task_work_run+0xdd/0x190 [ 73.047576][ T6995] do_exit+0xb7d/0x29f0 [ 73.052220][ T6995] ? lock_acquire+0x1f1/0xad0 [ 73.057074][ T6995] ? find_held_lock+0x2d/0x110 [ 73.062102][ T6995] ? mm_update_next_owner+0x7a0/0x7a0 [ 73.067807][ T6995] ? get_signal+0x332/0x1ee0 [ 73.072436][ T6995] ? lock_downgrade+0x830/0x830 [ 73.077466][ T6995] ? lock_is_held_type+0xbb/0xf0 [ 73.082585][ T6995] do_group_exit+0x125/0x310 [ 73.087200][ T6995] get_signal+0x40b/0x1ee0 [ 73.091899][ T6995] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 73.098209][ T6995] ? sco_sock_connect+0x4e4/0x980 [ 73.103768][ T6995] ? lockdep_hardirqs_on+0x76/0xf0 [ 73.108885][ T6995] ? sco_sock_connect+0x4e4/0x980 [ 73.113948][ T6995] arch_do_signal+0x82/0x2520 [ 73.118624][ T6995] ? sco_sock_release+0x290/0x290 [ 73.123654][ T6995] ? __sys_connect_file+0x4e/0x1a0 [ 73.128923][ T6995] ? copy_siginfo_to_user32+0xa0/0xa0 [ 73.134514][ T6995] ? __sys_connect+0x109/0x190 [ 73.139289][ T6995] ? __sys_connect_file+0x1a0/0x1a0 [ 73.144527][ T6995] ? lock_is_held_type+0xbb/0xf0 [ 73.149580][ T6995] ? __blkcg_punt_bio_submit+0x1d0/0x1d0 [ 73.155417][ T6995] ? mem_cgroup_move_charge_pte_range+0xa70/0xa70 [ 73.162009][ T6995] ? exit_to_user_mode_prepare+0xce/0x1d0 [ 73.168143][ T6995] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 73.174293][ T6995] exit_to_user_mode_prepare+0x172/0x1d0 [ 73.180252][ T6995] syscall_exit_to_user_mode+0x59/0x2b0 [ 73.185815][ T6995] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.191832][ T6995] RIP: 0033:0x446eb9 [ 73.195721][ T6995] Code: Bad RIP value. [ 73.199798][ T6995] RSP: 002b:00007ffdb17ff018 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 73.208470][ T6995] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446eb9 [ 73.217220][ T6995] RDX: 0000000000000008 RSI: 00000000200000c0 RDI: 0000000000000004 [ 73.225296][ T6995] RBP: 0000000000000004 R08: 0000000000000002 R09: 00000000000000ff [ 73.233283][ T6995] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 [ 73.241400][ T6995] R13: 0000000000407b10 R14: 0000000000000000 R15: 0000000000000000 [ 73.249405][ T6995] [ 73.251746][ T6995] Allocated by task 6995: [ 73.256196][ T6995] save_stack+0x1b/0x40 [ 73.260583][ T6995] __kasan_kmalloc.constprop.0+0xc2/0xd0 [ 73.266590][ T6995] kmem_cache_alloc_trace+0x14f/0x2d0 [ 73.271982][ T6995] hci_conn_add+0x53/0x1330 [ 73.276503][ T6995] hci_connect_sco+0x356/0x860 [ 73.281285][ T6995] sco_sock_connect+0x308/0x980 [ 73.286244][ T6995] __sys_connect_file+0x155/0x1a0 [ 73.291290][ T6995] __sys_connect+0x160/0x190 [ 73.296050][ T6995] __x64_sys_connect+0x6f/0xb0 [ 73.300930][ T6995] do_syscall_64+0x2d/0x70 [ 73.305622][ T6995] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.311633][ T6995] [ 73.314022][ T6995] Freed by task 6992: [ 73.318009][ T6995] save_stack+0x1b/0x40 [ 73.322399][ T6995] __kasan_slab_free+0xf5/0x140 [ 73.327482][ T6995] kfree+0x103/0x2c0 [ 73.331397][ T6995] device_release+0x71/0x200 [ 73.336713][ T6995] kobject_put+0x171/0x270 [ 73.341291][ T6995] put_device+0x1b/0x30 [ 73.345536][ T6995] hci_conn_del+0x27e/0x6a0 [ 73.350198][ T6995] hci_phy_link_complete_evt.isra.0+0x508/0x790 [ 73.356527][ T6995] hci_event_packet+0x4696/0x87a8 [ 73.361823][ T6995] hci_rx_work+0x22e/0xb50 [ 73.366324][ T6995] process_one_work+0x94c/0x1670 [ 73.371748][ T6995] worker_thread+0x64c/0x1120 [ 73.376516][ T6995] kthread+0x3b5/0x4a0 [ 73.380974][ T6995] ret_from_fork+0x1f/0x30 [ 73.385559][ T6995] [ 73.387887][ T6995] The buggy address belongs to the object at ffff88809f1a2000 [ 73.387887][ T6995] which belongs to the cache kmalloc-4k of size 4096 [ 73.402778][ T6995] The buggy address is located 16 bytes inside of [ 73.402778][ T6995] 4096-byte region [ffff88809f1a2000, ffff88809f1a3000) [ 73.417340][ T6995] The buggy address belongs to the page: [ 73.423653][ T6995] page:ffffea00027c6880 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 head:ffffea00027c6880 order:1 compound_mapcount:0 [ 73.438183][ T6995] flags: 0xfffe0000010200(slab|head) [ 73.444195][ T6995] raw: 00fffe0000010200 ffffea00027a8a88 ffffea0002394408 ffff8880aa002000 [ 73.453051][ T6995] raw: 0000000000000000 ffff88809f1a2000 0000000100000001 0000000000000000 [ 73.462143][ T6995] page dumped because: kasan: bad access detected [ 73.468555][ T6995] [ 73.470875][ T6995] Memory state around the buggy address: [ 73.477137][ T6995] ffff88809f1a1f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 73.485866][ T6995] ffff88809f1a1f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 73.499988][ T6995] >ffff88809f1a2000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 73.508537][ T6995] ^ [ 73.513324][ T6995] ffff88809f1a2080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 73.521859][ T6995] ffff88809f1a2100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 73.530395][ T6995] ================================================================== [ 73.538838][ T6995] Disabling lock debugging due to kernel taint [ 73.546721][ T6995] Kernel panic - not syncing: panic_on_warn set ... [ 73.553629][ T6995] CPU: 0 PID: 6995 Comm: syz-executor561 Tainted: G B 5.8.0-syzkaller #0 [ 73.563472][ T6995] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.573833][ T6995] Call Trace: [ 73.577495][ T6995] dump_stack+0x18f/0x20d [ 73.582331][ T6995] ? sco_sock_sendmsg+0x5d0/0x5d0 [ 73.587478][ T6995] ? __sock_release+0x280/0x280 [ 73.592834][ T6995] panic+0x2e3/0x75c [ 73.597008][ T6995] ? __warn_printk+0xf3/0xf3 [ 73.601777][ T6995] ? preempt_schedule_common+0x59/0xc0 [ 73.607429][ T6995] ? sco_chan_del+0xe6/0x430 [ 73.612227][ T6995] ? preempt_schedule_thunk+0x16/0x18 [ 73.618415][ T6995] ? trace_hardirqs_on+0x55/0x220 [ 73.623468][ T6995] ? sco_chan_del+0xe6/0x430 [ 73.628468][ T6995] ? sco_chan_del+0xe6/0x430 [ 73.633717][ T6995] ? __sock_release+0x280/0x280 [ 73.638879][ T6995] end_report+0x4d/0x53 [ 73.643464][ T6995] kasan_report.cold+0xd/0x37 [ 73.648542][ T6995] ? sco_chan_del+0xe6/0x430 [ 73.653497][ T6995] check_memory_region+0x13d/0x180 [ 73.659629][ T6995] sco_chan_del+0xe6/0x430 [ 73.664592][ T6995] __sco_sock_close+0x16e/0x5b0 [ 73.669444][ T6995] sco_sock_release+0x69/0x290 [ 73.674674][ T6995] __sock_release+0xcd/0x280 [ 73.679355][ T6995] sock_close+0x18/0x20 [ 73.683885][ T6995] __fput+0x33c/0x880 [ 73.689197][ T6995] task_work_run+0xdd/0x190 [ 73.694891][ T6995] do_exit+0xb7d/0x29f0 [ 73.700112][ T6995] ? lock_acquire+0x1f1/0xad0 [ 73.705200][ T6995] ? find_held_lock+0x2d/0x110 [ 73.711551][ T6995] ? mm_update_next_owner+0x7a0/0x7a0 [ 73.717573][ T6995] ? get_signal+0x332/0x1ee0 [ 73.722637][ T6995] ? lock_downgrade+0x830/0x830 [ 73.727890][ T6995] ? lock_is_held_type+0xbb/0xf0 [ 73.732952][ T6995] do_group_exit+0x125/0x310 [ 73.738084][ T6995] get_signal+0x40b/0x1ee0 [ 73.743613][ T6995] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 73.749880][ T6995] ? sco_sock_connect+0x4e4/0x980 [ 73.756064][ T6995] ? lockdep_hardirqs_on+0x76/0xf0 [ 73.761707][ T6995] ? sco_sock_connect+0x4e4/0x980 [ 73.767382][ T6995] arch_do_signal+0x82/0x2520 [ 73.772533][ T6995] ? sco_sock_release+0x290/0x290 [ 73.777648][ T6995] ? __sys_connect_file+0x4e/0x1a0 [ 73.782770][ T6995] ? copy_siginfo_to_user32+0xa0/0xa0 [ 73.788743][ T6995] ? __sys_connect+0x109/0x190 [ 73.793751][ T6995] ? __sys_connect_file+0x1a0/0x1a0 [ 73.799451][ T6995] ? lock_is_held_type+0xbb/0xf0 [ 73.804963][ T6995] ? __blkcg_punt_bio_submit+0x1d0/0x1d0 [ 73.810817][ T6995] ? mem_cgroup_move_charge_pte_range+0xa70/0xa70 [ 73.817451][ T6995] ? exit_to_user_mode_prepare+0xce/0x1d0 [ 73.823352][ T6995] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 73.830284][ T6995] exit_to_user_mode_prepare+0x172/0x1d0 [ 73.836718][ T6995] syscall_exit_to_user_mode+0x59/0x2b0 [ 73.842666][ T6995] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.849611][ T6995] RIP: 0033:0x446eb9 [ 73.853683][ T6995] Code: Bad RIP value. [ 73.858709][ T6995] RSP: 002b:00007ffdb17ff018 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 73.867544][ T6995] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446eb9 [ 73.876263][ T6995] RDX: 0000000000000008 RSI: 00000000200000c0 RDI: 0000000000000004 [ 73.884416][ T6995] RBP: 0000000000000004 R08: 0000000000000002 R09: 00000000000000ff [ 73.892671][ T6995] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 [ 73.901395][ T6995] R13: 0000000000407b10 R14: 0000000000000000 R15: 0000000000000000 [ 73.911438][ T6995] Kernel Offset: disabled [ 73.916261][ T6995] Rebooting in 86400 seconds..