[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 76.357445][ T26] audit: type=1800 audit(1583991088.250:25): pid=9326 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0
[ 76.377302][ T26] audit: type=1800 audit(1583991088.250:26): pid=9326 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0
[ 76.415468][ T26] audit: type=1800 audit(1583991088.260:27): pid=9326 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.0.229' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
executing program
executing program
executing program
syzkaller login: [ 604.214459][ T1122] INFO: task syz-executor001:9487 blocked for more than 143 seconds.
[ 604.214480][ T1122] Not tainted 5.6.0-rc5-syzkaller #0
[ 604.214486][ T1122] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 604.214492][ T1122] syz-executor001 D28392 9487 9486 0x20024004
[ 604.214515][ T1122] Call Trace:
[ 604.214707][ T1122] ? __schedule+0x934/0x1f90
[ 604.214734][ T1122] ? __sched_text_start+0x8/0x8
[ 604.214765][ T1122] schedule+0xd0/0x2a0
[ 604.214785][ T1122] schedule_preempt_disabled+0xf/0x20
[ 604.214799][ T1122] __mutex_lock+0x7ab/0x13c0
[ 604.214878][ T1122] ? fb_open+0xd3/0x430
[ 604.214902][ T1122] ? mutex_trylock+0x2c0/0x2c0
[ 604.214925][ T1122] ? __mutex_unlock_slowpath+0xe2/0x660
[ 604.214988][ T1122] ? chrdev_open+0xc4/0x5c0
[ 604.215049][ T1122] ? lock_downgrade+0x7f0/0x7f0
[ 604.215078][ T1122] ? fb_open+0xd3/0x430
[ 604.215089][ T1122] fb_open+0xd3/0x430
[ 604.215107][ T1122] ? get_fb_info.part.0+0x80/0x80
[ 604.215121][ T1122] chrdev_open+0x219/0x5c0
[ 604.215137][ T1122] ? rwlock_bug.part.0+0x90/0x90
[ 604.215152][ T1122] ? cdev_put.part.0+0x50/0x50
[ 604.215183][ T1122] do_dentry_open+0x4a2/0x1250
[ 604.215201][ T1122] ? cdev_put.part.0+0x50/0x50
[ 604.215248][ T1122] ? security_inode_permission+0xc4/0xf0
[ 604.215263][ T1122] ? chown_common+0x550/0x550
[ 604.215278][ T1122] ? inode_permission+0xab/0x500
[ 604.215305][ T1122] path_openat+0x122a/0x32b0
[ 604.215341][ T1122] ? path_mountpoint.isra.0+0x370/0x370
[ 604.215363][ T1122] ? __lock_acquire+0x14bd/0x3ca0
[ 604.215393][ T1122] do_filp_open+0x192/0x260
[ 604.215411][ T1122] ? may_open_dev+0xf0/0xf0
[ 604.215440][ T1122] ? do_raw_spin_lock+0x129/0x2e0
[ 604.215472][ T1122] ? _raw_spin_unlock+0x24/0x40
[ 604.215513][ T1122] ? __alloc_fd+0x46d/0x600
[ 604.215543][ T1122] do_sys_openat2+0x54c/0x740
[ 604.215563][ T1122] ? file_open_root+0x3d0/0x3d0
[ 604.215600][ T1122] do_sys_open+0xc3/0x140
[ 604.215615][ T1122] ? filp_open+0x70/0x70
[ 604.215664][ T1122] ? fpregs_mark_activate+0x320/0x320
[ 604.215702][ T1122] ? trace_hardirqs_off_caller+0x55/0x230
[ 604.215736][ T1122] do_fast_syscall_32+0x270/0xe8f
[ 604.215778][ T1122] entry_SYSENTER_compat+0x70/0x7f
[ 604.215821][ T1122] INFO: task syz-executor001:9488 blocked for more than 143 seconds.
[ 604.215830][ T1122] Not tainted 5.6.0-rc5-syzkaller #0
[ 604.215835][ T1122] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 604.215841][ T1122] syz-executor001 D28392 9488 9485 0x20024004
[ 604.215862][ T1122] Call Trace:
[ 604.215884][ T1122] ? __schedule+0x934/0x1f90
[ 604.215909][ T1122] ? __sched_text_start+0x8/0x8
[ 604.215940][ T1122] schedule+0xd0/0x2a0
[ 604.215960][ T1122] schedule_preempt_disabled+0xf/0x20
[ 604.215973][ T1122] __mutex_lock+0x7ab/0x13c0
[ 604.215991][ T1122] ? fb_open+0xd3/0x430
[ 604.216015][ T1122] ? mutex_trylock+0x2c0/0x2c0
[ 604.216037][ T1122] ? __mutex_unlock_slowpath+0xe2/0x660
[ 604.216051][ T1122] ? chrdev_open+0xc4/0x5c0
[ 604.216073][ T1122] ? lock_downgrade+0x7f0/0x7f0
[ 604.216101][ T1122] ? fb_open+0xd3/0x430
[ 604.216112][ T1122] fb_open+0xd3/0x430
[ 604.216130][ T1122] ? get_fb_info.part.0+0x80/0x80
[ 604.216144][ T1122] chrdev_open+0x219/0x5c0
[ 604.216158][ T1122] ? rwlock_bug.part.0+0x90/0x90
[ 604.216174][ T1122] ? cdev_put.part.0+0x50/0x50
[ 604.216205][ T1122] do_dentry_open+0x4a2/0x1250
[ 604.216223][ T1122] ? cdev_put.part.0+0x50/0x50
[ 604.216242][ T1122] ? security_inode_permission+0xc4/0xf0
[ 604.216257][ T1122] ? chown_common+0x550/0x550
[ 604.216271][ T1122] ? inode_permission+0xab/0x500
[ 604.216298][ T1122] path_openat+0x122a/0x32b0
[ 604.216334][ T1122] ? path_mountpoint.isra.0+0x370/0x370
[ 604.216356][ T1122] ? __lock_acquire+0x14bd/0x3ca0
[ 604.216385][ T1122] do_filp_open+0x192/0x260
[ 604.216403][ T1122] ? may_open_dev+0xf0/0xf0
[ 604.216432][ T1122] ? do_raw_spin_lock+0x129/0x2e0
[ 604.216463][ T1122] ? _raw_spin_unlock+0x24/0x40
[ 604.216477][ T1122] ? __alloc_fd+0x46d/0x600
[ 604.216518][ T1122] do_sys_openat2+0x54c/0x740
[ 604.216538][ T1122] ? file_open_root+0x3d0/0x3d0
[ 604.216572][ T1122] do_sys_open+0xc3/0x140
[ 604.216586][ T1122] ? filp_open+0x70/0x70
[ 604.216607][ T1122] ? fpregs_mark_activate+0x320/0x320
[ 604.216623][ T1122] ? trace_hardirqs_off_caller+0x55/0x230
[ 604.216647][ T1122] do_fast_syscall_32+0x270/0xe8f
[ 604.216669][ T1122] entry_SYSENTER_compat+0x70/0x7f
[ 604.216703][ T1122] INFO: task syz-executor001:9489 blocked for more than 143 seconds.
[ 604.216710][ T1122] Not tainted 5.6.0-rc5-syzkaller #0
[ 604.216715][ T1122] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 604.216721][ T1122] syz-executor001 D28056 9489 9483 0x20020004
[ 604.216739][ T1122] Call Trace:
[ 604.216759][ T1122] ? __schedule+0x934/0x1f90
[ 604.216784][ T1122] ? __sched_text_start+0x8/0x8
[ 604.216814][ T1122] schedule+0xd0/0x2a0
[ 604.216837][ T1122] schedule_preempt_disabled+0xf/0x20
[ 604.216850][ T1122] __mutex_lock+0x7ab/0x13c0
[ 604.216884][ T1122] ? fb_open+0xd3/0x430
[ 604.216908][ T1122] ? mutex_trylock+0x2c0/0x2c0
[ 604.216930][ T1122] ? __mutex_unlock_slowpath+0xe2/0x660
[ 604.216944][ T1122] ? chrdev_open+0xc4/0x5c0
[ 604.216966][ T1122] ? lock_downgrade+0x7f0/0x7f0
[ 604.216994][ T1122] ? fb_open+0xd3/0x430
[ 604.217005][ T1122] fb_open+0xd3/0x430
[ 604.217023][ T1122] ? get_fb_info.part.0+0x80/0x80
[ 604.217036][ T1122] chrdev_open+0x219/0x5c0
[ 604.217051][ T1122] ? rwlock_bug.part.0+0x90/0x90
[ 604.217067][ T1122] ? cdev_put.part.0+0x50/0x50
[ 604.217097][ T1122] do_dentry_open+0x4a2/0x1250
[ 604.217115][ T1122] ? cdev_put.part.0+0x50/0x50
[ 604.217134][ T1122] ? security_inode_permission+0xc4/0xf0
[ 604.217149][ T1122] ? chown_common+0x550/0x550
[ 604.217164][ T1122] ? inode_permission+0xab/0x500
[ 604.217191][ T1122] path_openat+0x122a/0x32b0
[ 604.217227][ T1122] ? path_mountpoint.isra.0+0x370/0x370
[ 604.217250][ T1122] ? __lock_acquire+0x14bd/0x3ca0
[ 604.217279][ T1122] do_filp_open+0x192/0x260
[ 604.217296][ T1122] ? may_open_dev+0xf0/0xf0
[ 604.217325][ T1122] ? do_raw_spin_lock+0x129/0x2e0
[ 604.217357][ T1122] ? _raw_spin_unlock+0x24/0x40
[ 604.217371][ T1122] ? __alloc_fd+0x46d/0x600
[ 604.217401][ T1122] do_sys_openat2+0x54c/0x740
[ 604.217421][ T1122] ? file_open_root+0x3d0/0x3d0
[ 604.217457][ T1122] do_sys_open+0xc3/0x140
[ 604.217472][ T1122] ? filp_open+0x70/0x70
[ 604.217493][ T1122] ? fpregs_mark_activate+0x320/0x320
[ 604.217510][ T1122] ? trace_hardirqs_off_caller+0x55/0x230
[ 604.217535][ T1122] do_fast_syscall_32+0x270/0xe8f
[ 604.217557][ T1122] entry_SYSENTER_compat+0x70/0x7f
[ 604.217604][ T1122] INFO: task syz-executor001:9490 blocked for more than 143 seconds.
[ 604.217611][ T1122] Not tainted 5.6.0-rc5-syzkaller #0
[ 604.217616][ T1122] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 604.217622][ T1122] syz-executor001 D28048 9490 9481 0x20020004
[ 604.217640][ T1122] Call Trace:
[ 604.217660][ T1122] ? __schedule+0x934/0x1f90
[ 604.217685][ T1122] ? __sched_text_start+0x8/0x8
[ 604.217715][ T1122] schedule+0xd0/0x2a0
[ 604.217733][ T1122] schedule_preempt_disabled+0xf/0x20
[ 604.217746][ T1122] __mutex_lock+0x7ab/0x13c0
[ 604.217763][ T1122] ? fb_open+0xd3/0x430
[ 604.217786][ T1122] ? mutex_trylock+0x2c0/0x2c0
[ 604.217808][ T1122] ? __mutex_unlock_slowpath+0xe2/0x660
[ 604.217825][ T1122] ? chrdev_open+0xc4/0x5c0
[ 604.217847][ T1122] ? lock_downgrade+0x7f0/0x7f0
[ 604.217873][ T1122] ? fb_open+0xd3/0x430
[ 604.217884][ T1122] fb_open+0xd3/0x430
[ 604.217902][ T1122] ? get_fb_info.part.0+0x80/0x80
[ 604.217915][ T1122] chrdev_open+0x219/0x5c0
[ 604.217929][ T1122] ? rwlock_bug.part.0+0x90/0x90
[ 604.217943][ T1122] ? cdev_put.part.0+0x50/0x50
[ 604.217973][ T1122] do_dentry_open+0x4a2/0x1250
[ 604.217991][ T1122] ? cdev_put.part.0+0x50/0x50
[ 604.218009][ T1122] ? security_inode_permission+0xc4/0xf0
[ 604.218041][ T1122] ? chown_common+0x550/0x550
[ 604.218055][ T1122] ? inode_permission+0xab/0x500
[ 604.218096][ T1122] path_openat+0x122a/0x32b0
[ 604.218131][ T1122] ? path_mountpoint.isra.0+0x370/0x370
[ 604.218143][ T1122] ? __lock_acquire+0x14bd/0x3ca0
[ 604.218163][ T1122] ? __lock_acquire+0x14bd/0x3ca0
[ 604.218192][ T1122] do_filp_open+0x192/0x260
[ 604.218209][ T1122] ? may_open_dev+0xf0/0xf0
[ 604.218237][ T1122] ? do_raw_spin_lock+0x129/0x2e0
[ 604.218271][ T1122] ? _raw_spin_unlock+0x24/0x40
[ 604.218303][ T1122] ? __alloc_fd+0x46d/0x600
[ 604.218332][ T1122] do_sys_openat2+0x54c/0x740
[ 604.218353][ T1122] ? file_open_root+0x3d0/0x3d0
[ 604.218388][ T1122] do_sys_open+0xc3/0x140
[ 604.218404][ T1122] ? filp_open+0x70/0x70
[ 604.218425][ T1122] ? fpregs_mark_activate+0x320/0x320
[ 604.218442][ T1122] ? trace_hardirqs_off_caller+0x55/0x230
[ 604.218467][ T1122] do_fast_syscall_32+0x270/0xe8f
[ 604.218489][ T1122] entry_SYSENTER_compat+0x70/0x7f
[ 604.218525][ T1122] INFO: task syz-executor001:9491 blocked for more than 143 seconds.
[ 604.218533][ T1122] Not tainted 5.6.0-rc5-syzkaller #0
[ 604.218538][ T1122] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 604.218543][ T1122] syz-executor001 D28392 9491 9484 0x20020004
[ 604.218562][ T1122] Call Trace:
[ 604.218583][ T1122] ? __schedule+0x934/0x1f90
[ 604.218608][ T1122] ? __sched_text_start+0x8/0x8
[ 604.218639][ T1122] schedule+0xd0/0x2a0
[ 604.218659][ T1122] schedule_preempt_disabled+0xf/0x20
[ 604.218672][ T1122] __mutex_lock+0x7ab/0x13c0
[ 604.218690][ T1122] ? fb_open+0xd3/0x430
[ 604.218713][ T1122] ? mutex_trylock+0x2c0/0x2c0
[ 604.218736][ T1122] ? __mutex_unlock_slowpath+0xe2/0x660
[ 604.218749][ T1122] ? chrdev_open+0xc4/0x5c0
[ 604.218771][ T1122] ? lock_downgrade+0x7f0/0x7f0
[ 604.218799][ T1122] ? fb_open+0xd3/0x430
[ 604.218810][ T1122] fb_open+0xd3/0x430
[ 604.218834][ T1122] ? get_fb_info.part.0+0x80/0x80
[ 604.218847][ T1122] chrdev_open+0x219/0x5c0
[ 604.218862][ T1122] ? rwlock_bug.part.0+0x90/0x90
[ 604.218878][ T1122] ? cdev_put.part.0+0x50/0x50
[ 604.218908][ T1122] do_dentry_open+0x4a2/0x1250
[ 604.218926][ T1122] ? cdev_put.part.0+0x50/0x50
[ 604.218945][ T1122] ? security_inode_permission+0xc4/0xf0
[ 604.218960][ T1122] ? chown_common+0x550/0x550
[ 604.218975][ T1122] ? inode_permission+0xab/0x500
[ 604.219002][ T1122] path_openat+0x122a/0x32b0
[ 604.219039][ T1122] ? path_mountpoint.isra.0+0x370/0x370
[ 604.219061][ T1122] ? __lock_acquire+0x14bd/0x3ca0
[ 604.219090][ T1122] do_filp_open+0x192/0x260
[ 604.219108][ T1122] ? may_open_dev+0xf0/0xf0
[ 604.219137][ T1122] ? do_raw_spin_lock+0x129/0x2e0
[ 604.219169][ T1122] ? _raw_spin_unlock+0x24/0x40
[ 604.219183][ T1122] ? __alloc_fd+0x46d/0x600
[ 604.219212][ T1122] do_sys_openat2+0x54c/0x740
[ 604.219232][ T1122] ? file_open_root+0x3d0/0x3d0
[ 604.219268][ T1122] do_sys_open+0xc3/0x140
[ 604.219284][ T1122] ? filp_open+0x70/0x70
[ 604.219309][ T1122] ? trace_hardirqs_off_caller+0x55/0x230
[ 604.219333][ T1122] do_fast_syscall_32+0x270/0xe8f
[ 604.219355][ T1122] entry_SYSENTER_compat+0x70/0x7f
[ 604.219387][ T1122]
[ 604.219387][ T1122] Showing all locks held in the system:
[ 604.219401][ T1122] 1 lock held by khungtaskd/1122:
[ 604.219405][ T1122] #0: ffffffff897accc0 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x260
[ 604.219472][ T1122] 1 lock held by rsyslogd/9364:
[ 604.219476][ T1122] #0: ffff8880a64a1160 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100
[ 604.219505][ T1122] 2 locks held by getty/9454:
[ 604.219509][ T1122] #0: ffff8880a37bd090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 604.219564][ T1122] #1: ffffc9000190b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 604.219593][ T1122] 2 locks held by getty/9455:
[ 604.219597][ T1122] #0: ffff8880a6622090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 604.219621][ T1122] #1: ffffc9000193b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 604.219649][ T1122] 2 locks held by getty/9456:
[ 604.219653][ T1122] #0: ffff8880a7171090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 604.219677][ T1122] #1: ffffc9000191b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 604.219705][ T1122] 2 locks held by getty/9457:
[ 604.219709][ T1122] #0: ffff888099854090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 604.219733][ T1122] #1: ffffc9000199b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 604.219761][ T1122] 2 locks held by getty/9458:
[ 604.219765][ T1122] #0: ffff888097579090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 604.219789][ T1122] #1: ffffc9000197b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 604.219821][ T1122] 2 locks held by getty/9459:
[ 604.219825][ T1122] #0: ffff888089968090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 604.219850][ T1122] #1: ffffc9000198b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 604.219878][ T1122] 2 locks held by getty/9460:
[ 604.219882][ T1122] #0: ffff88809610e090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 604.219906][ T1122] #1: ffffc900018ef2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 604.219936][ T1122] 2 locks held by syz-executor001/9482:
[ 604.219945][ T1122] 1 lock held by syz-executor001/9487:
[ 604.219949][ T1122] #0: ffff888218c03070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 604.219976][ T1122] 1 lock held by syz-executor001/9488:
[ 604.219980][ T1122] #0: ffff888218c03070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 604.220007][ T1122] 1 lock held by syz-executor001/9489:
[ 604.220011][ T1122] #0: ffff888218c03070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 604.220038][ T1122] 1 lock held by syz-executor001/9490:
[ 604.220042][ T1122] #0: ffff888218c03070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 604.220069][ T1122] 1 lock held by syz-executor001/9491:
[ 604.220073][ T1122] #0: ffff888218c03070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 604.220096][ T1122]
[ 604.220100][ T1122] =============================================
[ 604.220100][ T1122]
[ 604.220106][ T1122] NMI backtrace for cpu 1
[ 604.220120][ T1122] CPU: 1 PID: 1122 Comm: khungtaskd Not tainted 5.6.0-rc5-syzkaller #0
[ 604.220127][ T1122] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 604.220131][ T1122] Call Trace:
[ 604.220192][ T1122] dump_stack+0x188/0x20d
[ 604.220215][ T1122] nmi_cpu_backtrace.cold+0x70/0xb1
[ 604.220278][ T1122] ? lapic_can_unplug_cpu.cold+0x3b/0x3b
[ 604.220295][ T1122] nmi_trigger_cpumask_backtrace+0x231/0x27e
[ 604.220348][ T1122] watchdog+0xa8c/0x1010
[ 604.220372][ T1122] ? reset_hung_task_detector+0x30/0x30
[ 604.220416][ T1122] kthread+0x357/0x430
[ 604.220430][ T1122] ? kthread_mod_delayed_work+0x1a0/0x1a0
[ 604.220447][ T1122] ret_from_fork+0x24/0x30
[ 604.220480][ T1122] Sending NMI from CPU 1 to CPUs 0:
[ 604.221109][ C0] NMI backtrace for cpu 0
[ 604.221114][ C0] CPU: 0 PID: 9482 Comm: syz-executor001 Not tainted 5.6.0-rc5-syzkaller #0
[ 604.221119][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 604.221123][ C0] RIP: 0010:vga16fb_fillrect+0x9e8/0x1960
[ 604.221132][ C0] Code: ec 74 22 e8 7a 5e bb fd 45 88 34 24 83 c5 01 89 df 49 83 c4 01 89 ee e8 56 5f bb fd 39 eb 75 e3 4c 03 6c 24 08 e8 58 5e bb fd <44> 89 fe 31 ff 4c 03 2c 24 e8 ba 5f bb fd 41 83 ef 01 41 83 ff ff
[ 604.221135][ C0] RSP: 0018:ffffc900020874b8 EFLAGS: 00000293
[ 604.221141][ C0] RAX: ffff8880906f4380 RBX: 0000000000000050 RCX: ffffffff83b6b74a
[ 604.221145][ C0] RDX: 0000000000000000 RSI: ffffffff83b6b758 RDI: 0000000000000004
[ 604.221149][ C0] RBP: 0000000000000050 R08: ffff8880906f4380 R09: ffffed104327cbb4
[ 604.221153][ C0] R10: ffffed104327cbb3 R11: ffff8882193e5d9f R12: ffff8880000a0050
[ 604.221158][ C0] R13: ffff8880000a0050 R14: 0000000000000000 R15: 00000000eda66252
[ 604.221162][ C0] FS: 0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:0000000009a93840
[ 604.221166][ C0] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
[ 604.221170][ C0] CR2: 0000000020000180 CR3: 000000009a17e000 CR4: 00000000001406f0
[ 604.221174][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 604.221178][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 604.221180][ C0] Call Trace:
[ 604.221182][ C0] ? memcpy+0x35/0x50
[ 604.221185][ C0] bit_clear_margins+0x2d5/0x4a0
[ 604.221188][ C0] ? bit_bmove+0x210/0x210
[ 604.221191][ C0] ? vesafb_probe.cold+0x1162/0x1162
[ 604.221194][ C0] fbcon_clear_margins+0x1de/0x240
[ 604.221197][ C0] fbcon_switch+0xd1b/0x1740
[ 604.221200][ C0] ? fbcon_set_def_font+0x370/0x370
[ 604.221202][ C0] ? fbcon_cursor+0x477/0x650
[ 604.221205][ C0] ? bit_clear+0x4e0/0x4e0
[ 604.221208][ C0] ? is_console_locked+0x5/0x10
[ 604.221211][ C0] ? fbcon_set_origin+0x26/0x50
[ 604.221213][ C0] redraw_screen+0x2a8/0x770
[ 604.221216][ C0] ? vesafb_probe.cold+0x1162/0x1162
[ 604.221219][ C0] ? respond_string+0x290/0x290
[ 604.221222][ C0] ? fbcon_set_palette+0x3b1/0x4a0
[ 604.221225][ C0] fbcon_modechanged+0x5bd/0x780
[ 604.221228][ C0] fbcon_update_vcs+0x3a/0x50
[ 604.221231][ C0] fb_set_var+0xad0/0xd40
[ 604.221233][ C0] ? fb_blank+0x190/0x190
[ 604.221236][ C0] ? do_fb_ioctl+0x348/0x7d0
[ 604.221239][ C0] ? lock_acquire+0x197/0x420
[ 604.221241][ C0] ? do_fb_ioctl+0x335/0x7d0
[ 604.221244][ C0] do_fb_ioctl+0x390/0x7d0
[ 604.221247][ C0] ? fb_mmap+0x550/0x550
[ 604.221249][ C0] ? lock_downgrade+0x7f0/0x7f0
[ 604.221252][ C0] ? quarantine_put+0x119/0x1c0
[ 604.221255][ C0] ? kfree+0x1eb/0x2b0
[ 604.221258][ C0] ? tomoyo_path_number_perm+0x411/0x4d0
[ 604.221261][ C0] ? lockdep_hardirqs_on+0x417/0x5d0
[ 604.221264][ C0] ? tomoyo_path_number_perm+0x238/0x4d0
[ 604.221267][ C0] ? tomoyo_execute_permission+0x470/0x470
[ 604.221270][ C0] ? trace_hardirqs_off+0x50/0x220
[ 604.221273][ C0] ? __sanitizer_cov_trace_switch+0x45/0x70
[ 604.221276][ C0] ? do_vfs_ioctl+0x506/0x12c0
[ 604.221279][ C0] fb_compat_ioctl+0x305/0xc50
[ 604.221282][ C0] ? fb_release+0x140/0x140
[ 604.221284][ C0] ? do_sys_open+0xc3/0x140
[ 604.221287][ C0] ? fb_release+0x140/0x140
[ 604.221290][ C0] __ia32_compat_sys_ioctl+0x23d/0x2b0
[ 604.221293][ C0] do_fast_syscall_32+0x270/0xe8f
[ 604.221296][ C0] entry_SYSENTER_compat+0x70/0x7f
[ 604.221499][ T1122] Kernel panic - not syncing: hung_task: blocked tasks
[ 604.221514][ T1122] CPU: 1 PID: 1122 Comm: khungtaskd Not tainted 5.6.0-rc5-syzkaller #0
[ 604.221524][ T1122] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 604.221532][ T1122] Call Trace:
[ 604.221546][ T1122] dump_stack+0x188/0x20d
[ 604.221590][ T1122] panic+0x2e3/0x75c
[ 604.221605][ T1122] ? add_taint.cold+0x16/0x16
[ 604.221627][ T1122] ? cpumask_next+0x3c/0x40
[ 604.221643][ T1122] ? printk_safe_flush+0xd9/0x120
[ 604.221657][ T1122] ? watchdog+0xa8c/0x1010
[ 604.221673][ T1122] ? nmi_trigger_cpumask_backtrace+0x214/0x27e
[ 604.221696][ T1122] watchdog+0xa9d/0x1010
[ 604.221720][ T1122] ? reset_hung_task_detector+0x30/0x30
[ 604.221734][ T1122] kthread+0x357/0x430
[ 604.221748][ T1122] ? kthread_mod_delayed_work+0x1a0/0x1a0
[ 604.221763][ T1122] ret_from_fork+0x24/0x30
[ 604.223363][ T1122] Kernel Offset: disabled
[ 606.050596][ T1122] Rebooting in 86400 seconds..