[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 81.137197][ T27] audit: type=1800 audit(1584872525.916:25): pid=9454 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0
[ 81.168513][ T27] audit: type=1800 audit(1584872525.926:26): pid=9454 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0
[ 81.208980][ T27] audit: type=1800 audit(1584872525.926:27): pid=9454 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 '10.128.10.48' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
executing program
executing program
executing program
syzkaller login: [ 608.807349][ T1138] INFO: task syz-executor200:9615 blocked for more than 143 seconds.
[ 608.807368][ T1138] Not tainted 5.6.0-rc6-syzkaller #0
[ 608.807374][ T1138] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 608.807380][ T1138] syz-executor200 D28392 9615 9614 0x20020004
[ 608.807403][ T1138] Call Trace:
[ 608.807540][ T1138] ? __schedule+0x934/0x1f90
[ 608.807567][ T1138] ? __sched_text_start+0x8/0x8
[ 608.807598][ T1138] schedule+0xd0/0x2a0
[ 608.807617][ T1138] schedule_preempt_disabled+0xf/0x20
[ 608.807630][ T1138] __mutex_lock+0x7ab/0x13c0
[ 608.807754][ T1138] ? fb_open+0xd3/0x430
[ 608.807778][ T1138] ? mutex_trylock+0x2c0/0x2c0
[ 608.807800][ T1138] ? __mutex_unlock_slowpath+0xe2/0x660
[ 608.807859][ T1138] ? chrdev_open+0xc4/0x5c0
[ 608.807911][ T1138] ? lock_downgrade+0x7f0/0x7f0
[ 608.807939][ T1138] ? fb_open+0xd3/0x430
[ 608.807949][ T1138] fb_open+0xd3/0x430
[ 608.807967][ T1138] ? get_fb_info.part.0+0x80/0x80
[ 608.807980][ T1138] chrdev_open+0x219/0x5c0
[ 608.807994][ T1138] ? rwlock_bug.part.0+0x90/0x90
[ 608.808009][ T1138] ? cdev_put.part.0+0x50/0x50
[ 608.808069][ T1138] do_dentry_open+0x4a2/0x1250
[ 608.808087][ T1138] ? cdev_put.part.0+0x50/0x50
[ 608.808158][ T1138] ? security_inode_permission+0xc4/0xf0
[ 608.808173][ T1138] ? chown_common+0x550/0x550
[ 608.808214][ T1138] ? inode_permission+0xab/0x500
[ 608.808241][ T1138] path_openat+0x122a/0x32b0
[ 608.808278][ T1138] ? path_mountpoint.isra.0+0x370/0x370
[ 608.808300][ T1138] ? __lock_acquire+0x14bd/0x3ca0
[ 608.808329][ T1138] do_filp_open+0x192/0x260
[ 608.808349][ T1138] ? may_open_dev+0xf0/0xf0
[ 608.808378][ T1138] ? do_raw_spin_lock+0x129/0x2e0
[ 608.808436][ T1138] ? _raw_spin_unlock+0x24/0x40
[ 608.808476][ T1138] ? __alloc_fd+0x46d/0x600
[ 608.808506][ T1138] do_sys_openat2+0x54c/0x740
[ 608.808526][ T1138] ? file_open_root+0x3d0/0x3d0
[ 608.808561][ T1138] do_sys_open+0xc3/0x140
[ 608.808576][ T1138] ? filp_open+0x70/0x70
[ 608.808624][ T1138] ? fpregs_mark_activate+0x320/0x320
[ 608.808686][ T1138] ? trace_hardirqs_off_caller+0x55/0x230
[ 608.808742][ T1138] do_fast_syscall_32+0x270/0xe8f
[ 608.808764][ T1138] entry_SYSENTER_compat+0x70/0x7f
[ 608.808802][ T1138] INFO: task syz-executor200:9616 blocked for more than 143 seconds.
[ 608.808810][ T1138] Not tainted 5.6.0-rc6-syzkaller #0
[ 608.808815][ T1138] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 608.808821][ T1138] syz-executor200 D28392 9616 9613 0x20024004
[ 608.808842][ T1138] Call Trace:
[ 608.808863][ T1138] ? __schedule+0x934/0x1f90
[ 608.808889][ T1138] ? __sched_text_start+0x8/0x8
[ 608.808920][ T1138] schedule+0xd0/0x2a0
[ 608.808938][ T1138] schedule_preempt_disabled+0xf/0x20
[ 608.808951][ T1138] __mutex_lock+0x7ab/0x13c0
[ 608.808969][ T1138] ? fb_open+0xd3/0x430
[ 608.808992][ T1138] ? mutex_trylock+0x2c0/0x2c0
[ 608.809015][ T1138] ? __mutex_unlock_slowpath+0xe2/0x660
[ 608.809028][ T1138] ? chrdev_open+0xc4/0x5c0
[ 608.809049][ T1138] ? lock_downgrade+0x7f0/0x7f0
[ 608.809076][ T1138] ? fb_open+0xd3/0x430
[ 608.809087][ T1138] fb_open+0xd3/0x430
[ 608.809104][ T1138] ? get_fb_info.part.0+0x80/0x80
[ 608.809117][ T1138] chrdev_open+0x219/0x5c0
[ 608.809131][ T1138] ? rwlock_bug.part.0+0x90/0x90
[ 608.809146][ T1138] ? cdev_put.part.0+0x50/0x50
[ 608.809176][ T1138] do_dentry_open+0x4a2/0x1250
[ 608.809193][ T1138] ? cdev_put.part.0+0x50/0x50
[ 608.809211][ T1138] ? security_inode_permission+0xc4/0xf0
[ 608.809226][ T1138] ? chown_common+0x550/0x550
[ 608.809239][ T1138] ? inode_permission+0xab/0x500
[ 608.809266][ T1138] path_openat+0x122a/0x32b0
[ 608.809302][ T1138] ? path_mountpoint.isra.0+0x370/0x370
[ 608.809323][ T1138] ? __lock_acquire+0x14bd/0x3ca0
[ 608.809353][ T1138] do_filp_open+0x192/0x260
[ 608.809369][ T1138] ? may_open_dev+0xf0/0xf0
[ 608.809398][ T1138] ? do_raw_spin_lock+0x129/0x2e0
[ 608.809429][ T1138] ? _raw_spin_unlock+0x24/0x40
[ 608.809443][ T1138] ? __alloc_fd+0x46d/0x600
[ 608.809472][ T1138] do_sys_openat2+0x54c/0x740
[ 608.809503][ T1138] ? file_open_root+0x3d0/0x3d0
[ 608.809539][ T1138] do_sys_open+0xc3/0x140
[ 608.809553][ T1138] ? filp_open+0x70/0x70
[ 608.809574][ T1138] ? fpregs_mark_activate+0x320/0x320
[ 608.809590][ T1138] ? trace_hardirqs_off_caller+0x55/0x230
[ 608.809615][ T1138] do_fast_syscall_32+0x270/0xe8f
[ 608.809636][ T1138] entry_SYSENTER_compat+0x70/0x7f
[ 608.809677][ T1138] INFO: task syz-executor200:9617 blocked for more than 143 seconds.
[ 608.809685][ T1138] Not tainted 5.6.0-rc6-syzkaller #0
[ 608.809690][ T1138] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 608.809695][ T1138] syz-executor200 D28392 9617 9611 0x20020004
[ 608.809716][ T1138] Call Trace:
[ 608.809737][ T1138] ? __schedule+0x934/0x1f90
[ 608.809762][ T1138] ? __sched_text_start+0x8/0x8
[ 608.809793][ T1138] schedule+0xd0/0x2a0
[ 608.809812][ T1138] schedule_preempt_disabled+0xf/0x20
[ 608.809825][ T1138] __mutex_lock+0x7ab/0x13c0
[ 608.809843][ T1138] ? fb_open+0xd3/0x430
[ 608.809865][ T1138] ? mutex_trylock+0x2c0/0x2c0
[ 608.809887][ T1138] ? __mutex_unlock_slowpath+0xe2/0x660
[ 608.809900][ T1138] ? chrdev_open+0xc4/0x5c0
[ 608.809921][ T1138] ? lock_downgrade+0x7f0/0x7f0
[ 608.809949][ T1138] ? fb_open+0xd3/0x430
[ 608.809959][ T1138] fb_open+0xd3/0x430
[ 608.809976][ T1138] ? get_fb_info.part.0+0x80/0x80
[ 608.809989][ T1138] chrdev_open+0x219/0x5c0
[ 608.810003][ T1138] ? rwlock_bug.part.0+0x90/0x90
[ 608.810018][ T1138] ? cdev_put.part.0+0x50/0x50
[ 608.810048][ T1138] do_dentry_open+0x4a2/0x1250
[ 608.810066][ T1138] ? cdev_put.part.0+0x50/0x50
[ 608.810084][ T1138] ? security_inode_permission+0xc4/0xf0
[ 608.810098][ T1138] ? chown_common+0x550/0x550
[ 608.810112][ T1138] ? inode_permission+0xab/0x500
[ 608.810138][ T1138] path_openat+0x122a/0x32b0
[ 608.810174][ T1138] ? path_mountpoint.isra.0+0x370/0x370
[ 608.810195][ T1138] ? __lock_acquire+0x14bd/0x3ca0
[ 608.810224][ T1138] do_filp_open+0x192/0x260
[ 608.810241][ T1138] ? may_open_dev+0xf0/0xf0
[ 608.810270][ T1138] ? do_raw_spin_lock+0x129/0x2e0
[ 608.810301][ T1138] ? _raw_spin_unlock+0x24/0x40
[ 608.810314][ T1138] ? __alloc_fd+0x46d/0x600
[ 608.810344][ T1138] do_sys_openat2+0x54c/0x740
[ 608.810363][ T1138] ? file_open_root+0x3d0/0x3d0
[ 608.810399][ T1138] do_sys_open+0xc3/0x140
[ 608.810413][ T1138] ? filp_open+0x70/0x70
[ 608.810434][ T1138] ? fpregs_mark_activate+0x320/0x320
[ 608.810450][ T1138] ? trace_hardirqs_off_caller+0x55/0x230
[ 608.810474][ T1138] do_fast_syscall_32+0x270/0xe8f
[ 608.810496][ T1138] entry_SYSENTER_compat+0x70/0x7f
[ 608.810531][ T1138] INFO: task syz-executor200:9618 blocked for more than 143 seconds.
[ 608.810539][ T1138] Not tainted 5.6.0-rc6-syzkaller #0
[ 608.810544][ T1138] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 608.810549][ T1138] syz-executor200 D28288 9618 9609 0x20020004
[ 608.810568][ T1138] Call Trace:
[ 608.810589][ T1138] ? __schedule+0x934/0x1f90
[ 608.810614][ T1138] ? __sched_text_start+0x8/0x8
[ 608.810645][ T1138] schedule+0xd0/0x2a0
[ 608.810668][ T1138] schedule_preempt_disabled+0xf/0x20
[ 608.810681][ T1138] __mutex_lock+0x7ab/0x13c0
[ 608.810698][ T1138] ? fb_open+0xd3/0x430
[ 608.810721][ T1138] ? mutex_trylock+0x2c0/0x2c0
[ 608.810743][ T1138] ? __mutex_unlock_slowpath+0xe2/0x660
[ 608.810756][ T1138] ? chrdev_open+0xc4/0x5c0
[ 608.810777][ T1138] ? lock_downgrade+0x7f0/0x7f0
[ 608.810804][ T1138] ? fb_open+0xd3/0x430
[ 608.810815][ T1138] fb_open+0xd3/0x430
[ 608.810832][ T1138] ? get_fb_info.part.0+0x80/0x80
[ 608.810851][ T1138] chrdev_open+0x219/0x5c0
[ 608.810864][ T1138] ? rwlock_bug.part.0+0x90/0x90
[ 608.810879][ T1138] ? cdev_put.part.0+0x50/0x50
[ 608.810909][ T1138] do_dentry_open+0x4a2/0x1250
[ 608.810926][ T1138] ? cdev_put.part.0+0x50/0x50
[ 608.810945][ T1138] ? security_inode_permission+0xc4/0xf0
[ 608.810959][ T1138] ? chown_common+0x550/0x550
[ 608.810972][ T1138] ? inode_permission+0xab/0x500
[ 608.810999][ T1138] path_openat+0x122a/0x32b0
[ 608.811035][ T1138] ? path_mountpoint.isra.0+0x370/0x370
[ 608.811057][ T1138] ? __lock_acquire+0x14bd/0x3ca0
[ 608.811086][ T1138] do_filp_open+0x192/0x260
[ 608.811102][ T1138] ? may_open_dev+0xf0/0xf0
[ 608.811131][ T1138] ? do_raw_spin_lock+0x129/0x2e0
[ 608.811162][ T1138] ? _raw_spin_unlock+0x24/0x40
[ 608.811176][ T1138] ? __alloc_fd+0x46d/0x600
[ 608.811205][ T1138] do_sys_openat2+0x54c/0x740
[ 608.811225][ T1138] ? file_open_root+0x3d0/0x3d0
[ 608.811260][ T1138] do_sys_open+0xc3/0x140
[ 608.811275][ T1138] ? filp_open+0x70/0x70
[ 608.811295][ T1138] ? fpregs_mark_activate+0x320/0x320
[ 608.811311][ T1138] ? trace_hardirqs_off_caller+0x55/0x230
[ 608.811336][ T1138] do_fast_syscall_32+0x270/0xe8f
[ 608.811357][ T1138] entry_SYSENTER_compat+0x70/0x7f
[ 608.811393][ T1138] INFO: task syz-executor200:9619 blocked for more than 143 seconds.
[ 608.811400][ T1138] Not tainted 5.6.0-rc6-syzkaller #0
[ 608.811405][ T1138] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 608.811411][ T1138] syz-executor200 D28392 9619 9612 0x20020004
[ 608.811433][ T1138] Call Trace:
[ 608.811453][ T1138] ? __schedule+0x934/0x1f90
[ 608.811478][ T1138] ? __sched_text_start+0x8/0x8
[ 608.811509][ T1138] schedule+0xd0/0x2a0
[ 608.811528][ T1138] schedule_preempt_disabled+0xf/0x20
[ 608.811541][ T1138] __mutex_lock+0x7ab/0x13c0
[ 608.811558][ T1138] ? fb_open+0xd3/0x430
[ 608.811581][ T1138] ? mutex_trylock+0x2c0/0x2c0
[ 608.811603][ T1138] ? __mutex_unlock_slowpath+0xe2/0x660
[ 608.811616][ T1138] ? chrdev_open+0xc4/0x5c0
[ 608.811637][ T1138] ? lock_downgrade+0x7f0/0x7f0
[ 608.811669][ T1138] ? fb_open+0xd3/0x430
[ 608.811680][ T1138] fb_open+0xd3/0x430
[ 608.811697][ T1138] ? get_fb_info.part.0+0x80/0x80
[ 608.811710][ T1138] chrdev_open+0x219/0x5c0
[ 608.811724][ T1138] ? rwlock_bug.part.0+0x90/0x90
[ 608.811743][ T1138] ? cdev_put.part.0+0x50/0x50
[ 608.811774][ T1138] do_dentry_open+0x4a2/0x1250
[ 608.811791][ T1138] ? cdev_put.part.0+0x50/0x50
[ 608.811809][ T1138] ? security_inode_permission+0xc4/0xf0
[ 608.811823][ T1138] ? chown_common+0x550/0x550
[ 608.811837][ T1138] ? inode_permission+0xab/0x500
[ 608.811864][ T1138] path_openat+0x122a/0x32b0
[ 608.811900][ T1138] ? path_mountpoint.isra.0+0x370/0x370
[ 608.811921][ T1138] ? __lock_acquire+0x14bd/0x3ca0
[ 608.811950][ T1138] do_filp_open+0x192/0x260
[ 608.811967][ T1138] ? may_open_dev+0xf0/0xf0
[ 608.811996][ T1138] ? do_raw_spin_lock+0x129/0x2e0
[ 608.812028][ T1138] ? _raw_spin_unlock+0x24/0x40
[ 608.812041][ T1138] ? __alloc_fd+0x46d/0x600
[ 608.812070][ T1138] do_sys_openat2+0x54c/0x740
[ 608.812090][ T1138] ? file_open_root+0x3d0/0x3d0
[ 608.812126][ T1138] do_sys_open+0xc3/0x140
[ 608.812140][ T1138] ? filp_open+0x70/0x70
[ 608.812161][ T1138] ? fpregs_mark_activate+0x320/0x320
[ 608.812177][ T1138] ? trace_hardirqs_off_caller+0x55/0x230
[ 608.812201][ T1138] do_fast_syscall_32+0x270/0xe8f
[ 608.812223][ T1138] entry_SYSENTER_compat+0x70/0x7f
[ 608.812255][ T1138]
[ 608.812255][ T1138] Showing all locks held in the system:
[ 608.812268][ T1138] 1 lock held by khungtaskd/1138:
[ 608.812273][ T1138] #0: ffffffff897accc0 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x260
[ 608.812328][ T1138] 1 lock held by rsyslogd/9492:
[ 608.812333][ T1138] #0: ffff8880a03895e0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100
[ 608.812361][ T1138] 2 locks held by getty/9582:
[ 608.812365][ T1138] #0: ffff8880980ad090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 608.812423][ T1138] #1: ffffc900017bb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 608.812450][ T1138] 2 locks held by getty/9583:
[ 608.812454][ T1138] #0: ffff888096b16090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 608.812478][ T1138] #1: ffffc900017cb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 608.812504][ T1138] 2 locks held by getty/9584:
[ 608.812508][ T1138] #0: ffff88808c05c090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 608.812531][ T1138] #1: ffffc9000180b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 608.812558][ T1138] 2 locks held by getty/9585:
[ 608.812562][ T1138] #0: ffff8880972ee090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 608.812586][ T1138] #1: ffffc9000177b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 608.812612][ T1138] 2 locks held by getty/9586:
[ 608.812617][ T1138] #0: ffff8880a1fd6090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 608.812640][ T1138] #1: ffffc900017eb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 608.812671][ T1138] 2 locks held by getty/9587:
[ 608.812675][ T1138] #0: ffff88809718a090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 608.812699][ T1138] #1: ffffc9000181b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 608.812725][ T1138] 2 locks held by getty/9588:
[ 608.812730][ T1138] #0: ffff88809d348090 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80
[ 608.812753][ T1138] #1: ffffc9000175b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x21d/0x1b30
[ 608.812781][ T1138] 2 locks held by syz-executor200/9610:
[ 608.812790][ T1138] 1 lock held by syz-executor200/9615:
[ 608.812794][ T1138] #0: ffff8880a3ae2070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 608.812820][ T1138] 1 lock held by syz-executor200/9616:
[ 608.812824][ T1138] #0: ffff8880a3ae2070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 608.812850][ T1138] 1 lock held by syz-executor200/9617:
[ 608.812854][ T1138] #0: ffff8880a3ae2070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 608.812880][ T1138] 1 lock held by syz-executor200/9618:
[ 608.812884][ T1138] #0: ffff8880a3ae2070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 608.812909][ T1138] 1 lock held by syz-executor200/9619:
[ 608.812914][ T1138] #0: ffff8880a3ae2070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 608.812936][ T1138]
[ 608.812940][ T1138] =============================================
[ 608.812940][ T1138]
[ 608.812947][ T1138] NMI backtrace for cpu 0
[ 608.812960][ T1138] CPU: 0 PID: 1138 Comm: khungtaskd Not tainted 5.6.0-rc6-syzkaller #0
[ 608.812967][ T1138] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 608.812971][ T1138] Call Trace:
[ 608.813083][ T1138] dump_stack+0x188/0x20d
[ 608.813105][ T1138] nmi_cpu_backtrace.cold+0x70/0xb1
[ 608.813173][ T1138] ? lapic_can_unplug_cpu.cold+0x3b/0x3b
[ 608.813189][ T1138] nmi_trigger_cpumask_backtrace+0x231/0x27e
[ 608.813256][ T1138] watchdog+0xa8c/0x1010
[ 608.813281][ T1138] ? reset_hung_task_detector+0x30/0x30
[ 608.813320][ T1138] kthread+0x357/0x430
[ 608.813334][ T1138] ? kthread_mod_delayed_work+0x1a0/0x1a0
[ 608.813351][ T1138] ret_from_fork+0x24/0x30
[ 608.813385][ T1138] Sending NMI from CPU 0 to CPUs 1:
[ 608.814125][ C1] NMI backtrace for cpu 1
[ 608.814131][ C1] CPU: 1 PID: 9610 Comm: syz-executor200 Not tainted 5.6.0-rc6-syzkaller #0
[ 608.814136][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 608.814140][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50
[ 608.814155][ C1] Code: 00 00 00 00 e9 e8 e7 ff ff cc 65 48 8b 04 25 c0 1e 02 00 48 8b 80 98 13 00 00 c3 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 <65> 48 8b 04 25 c0 1e 02 00 65 8b 15 58 f9 8f 7e 81 e2 00 01 1f 00
[ 608.814159][ C1] RSP: 0018:ffffc900020273f0 EFLAGS: 00000212
[ 608.814166][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff83b2e964
[ 608.814171][ C1] RDX: 0000000000000030 RSI: 0000000000000007 RDI: 0000000000000005
[ 608.814175][ C1] RBP: ffff8880000a0100 R08: ffff888093f8e2c0 R09: 0000000000000040
[ 608.814179][ C1] R10: ffffed10149eb6cb R11: ffff8880a4f5b65f R12: 0000000000000050
[ 608.814184][ C1] R13: ffff8880000a0000 R14: 0000000000000000 R15: 0000000000000030
[ 608.814188][ C1] FS: 0000000000000000(0000) GS:ffff8880ae700000(0063) knlGS:0000000008633840
[ 608.814192][ C1] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
[ 608.814197][ C1] CR2: ffffffffff600400 CR3: 000000009e76f000 CR4: 00000000001406e0
[ 608.814201][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 608.814205][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 608.814208][ C1] Call Trace:
[ 608.814211][ C1] bitfill_aligned+0xfc/0x200
[ 608.814214][ C1] cfb_fillrect+0x418/0x7a0
[ 608.814216][ C1] ? cfb_fillrect+0x7a0/0x7a0
[ 608.814219][ C1] vga16fb_fillrect+0x68f/0x1960
[ 608.814222][ C1] ? memcpy+0x35/0x50
[ 608.814225][ C1] bit_clear_margins+0x2d5/0x4a0
[ 608.814228][ C1] ? bit_bmove+0x210/0x210
[ 608.814231][ C1] ? vesafb_probe.cold+0x1162/0x1162
[ 608.814234][ C1] fbcon_clear_margins+0x1de/0x240
[ 608.814237][ C1] fbcon_switch+0xd1b/0x1740
[ 608.814241][ C1] ? fbcon_set_def_font+0x370/0x370
[ 608.814244][ C1] ? fbcon_cursor+0x477/0x650
[ 608.814247][ C1] ? bit_clear+0x4e0/0x4e0
[ 608.814250][ C1] ? is_console_locked+0x5/0x10
[ 608.814253][ C1] ? fbcon_set_origin+0x26/0x50
[ 608.814256][ C1] redraw_screen+0x2a8/0x770
[ 608.814259][ C1] ? vesafb_probe.cold+0x1162/0x1162
[ 608.814262][ C1] ? respond_string+0x290/0x290
[ 608.814265][ C1] ? fbcon_set_palette+0x3b1/0x4a0
[ 608.814268][ C1] fbcon_modechanged+0x5bd/0x780
[ 608.814271][ C1] fbcon_update_vcs+0x3a/0x50
[ 608.814274][ C1] fb_set_var+0xad0/0xd40
[ 608.814277][ C1] ? fb_blank+0x190/0x190
[ 608.814280][ C1] ? do_fb_ioctl+0x348/0x7d0
[ 608.814282][ C1] ? lock_acquire+0x197/0x420
[ 608.814285][ C1] ? do_fb_ioctl+0x335/0x7d0
[ 608.814288][ C1] do_fb_ioctl+0x390/0x7d0
[ 608.814291][ C1] ? fb_mmap+0x550/0x550
[ 608.814294][ C1] ? lock_downgrade+0x7f0/0x7f0
[ 608.814297][ C1] ? quarantine_put+0x119/0x1c0
[ 608.814299][ C1] ? kfree+0x1eb/0x2b0
[ 608.814303][ C1] ? tomoyo_path_number_perm+0x411/0x4d0
[ 608.814306][ C1] ? lockdep_hardirqs_on+0x417/0x5d0
[ 608.814309][ C1] ? tomoyo_path_number_perm+0x238/0x4d0
[ 608.814313][ C1] ? tomoyo_execute_permission+0x470/0x470
[ 608.814316][ C1] ? trace_hardirqs_off+0x50/0x220
[ 608.814319][ C1] ? __sanitizer_cov_trace_switch+0x45/0x70
[ 608.814322][ C1] ? do_vfs_ioctl+0x506/0x12c0
[ 608.814325][ C1] fb_compat_ioctl+0x305/0xc50
[ 608.814328][ C1] ? fb_release+0x140/0x140
[ 608.814331][ C1] ? do_sys_open+0xc3/0x140
[ 608.814334][ C1] ? fb_release+0x140/0x140
[ 608.814337][ C1] __ia32_compat_sys_ioctl+0x23d/0x2b0
[ 608.814340][ C1] do_fast_syscall_32+0x270/0xe8f
[ 608.814343][ C1] entry_SYSENTER_compat+0x70/0x7f
[ 608.814403][ T1138] Kernel panic - not syncing: hung_task: blocked tasks
[ 608.814414][ T1138] CPU: 0 PID: 1138 Comm: khungtaskd Not tainted 5.6.0-rc6-syzkaller #0
[ 608.814420][ T1138] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 608.814423][ T1138] Call Trace:
[ 608.814436][ T1138] dump_stack+0x188/0x20d
[ 608.814494][ T1138] panic+0x2e3/0x75c
[ 608.814510][ T1138] ? add_taint.cold+0x16/0x16
[ 608.814533][ T1138] ? cpumask_next+0x3c/0x40
[ 608.814549][ T1138] ? printk_safe_flush+0xd9/0x120
[ 608.814563][ T1138] ? watchdog+0xa8c/0x1010
[ 608.814579][ T1138] ? nmi_trigger_cpumask_backtrace+0x214/0x27e
[ 608.814602][ T1138] watchdog+0xa9d/0x1010
[ 608.814626][ T1138] ? reset_hung_task_detector+0x30/0x30
[ 608.814640][ T1138] kthread+0x357/0x430
[ 608.814657][ T1138] ? kthread_mod_delayed_work+0x1a0/0x1a0
[ 608.814673][ T1138] ret_from_fork+0x24/0x30
[ 608.817003][ T1138] Kernel Offset: disabled
[ 610.896600][ T1138] Rebooting in 86400 seconds..