[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.247' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 575.444235][ T1137] INFO: task syz-executor870:7063 blocked for more than 143 seconds. [ 575.444256][ T1137] Not tainted 5.7.0-rc5-syzkaller #0 [ 575.444262][ T1137] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 575.444270][ T1137] syz-executor870 D28120 7063 7061 0x00000004 [ 575.444293][ T1137] Call Trace: [ 575.444460][ T1137] ? __schedule+0x937/0x1ff0 [ 575.444485][ T1137] ? __sched_text_start+0x8/0x8 [ 575.444511][ T1137] ? schedule+0xd0/0x2a0 [ 575.444527][ T1137] ? schedule_preempt_disabled+0xf/0x20 [ 575.444540][ T1137] ? __mutex_lock+0x7ab/0x13c0 [ 575.444583][ T1137] ? fb_open+0xd3/0x430 [ 575.444601][ T1137] ? mutex_trylock+0x2c0/0x2c0 [ 575.444620][ T1137] ? __mutex_unlock_slowpath+0xe2/0x660 [ 575.444654][ T1137] ? chrdev_open+0xc4/0x5c0 [ 575.444691][ T1137] ? lock_downgrade+0x840/0x840 [ 575.444712][ T1137] ? fb_open+0xd3/0x430 [ 575.444724][ T1137] ? fb_open+0xd3/0x430 [ 575.444740][ T1137] ? get_fb_info.part.0+0x80/0x80 [ 575.444753][ T1137] ? chrdev_open+0x219/0x5c0 [ 575.444769][ T1137] ? cdev_put.part.0+0x50/0x50 [ 575.444821][ T1137] ? security_file_open+0x84/0x410 [ 575.444857][ T1137] ? do_dentry_open+0x4ba/0x1290 [ 575.444873][ T1137] ? cdev_put.part.0+0x50/0x50 [ 575.444892][ T1137] ? security_inode_permission+0xc4/0xf0 [ 575.444906][ T1137] ? chown_common+0x550/0x550 [ 575.444982][ T1137] ? inode_permission+0xab/0x500 [ 575.445003][ T1137] ? path_openat+0x1e59/0x27d0 [ 575.445027][ T1137] ? path_lookupat.isra.0+0x530/0x530 [ 575.445047][ T1137] ? lock_acquire+0x1f2/0x8f0 [ 575.445071][ T1137] ? do_filp_open+0x192/0x260 [ 575.445086][ T1137] ? may_open_dev+0xf0/0xf0 [ 575.445108][ T1137] ? do_raw_spin_lock+0x129/0x2e0 [ 575.445133][ T1137] ? _raw_spin_unlock+0x24/0x40 [ 575.445154][ T1137] ? __alloc_fd+0x46d/0x600 [ 575.445177][ T1137] ? do_sys_openat2+0x585/0x7d0 [ 575.445198][ T1137] ? file_open_root+0x400/0x400 [ 575.445265][ T1137] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 575.445284][ T1137] ? do_sys_open+0xc3/0x140 [ 575.445298][ T1137] ? filp_open+0x70/0x70 [ 575.445338][ T1137] ? fpregs_mark_activate+0x320/0x320 [ 575.445394][ T1137] ? trace_hardirqs_off_caller+0x55/0x230 [ 575.445424][ T1137] ? do_syscall_64+0xf6/0x7d0 [ 575.445443][ T1137] ? entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 575.445471][ T1137] INFO: task syz-executor870:7064 blocked for more than 143 seconds. [ 575.445479][ T1137] Not tainted 5.7.0-rc5-syzkaller #0 [ 575.445485][ T1137] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 575.445492][ T1137] syz-executor870 D28120 7064 7060 0x00004004 [ 575.445514][ T1137] Call Trace: [ 575.445535][ T1137] ? __schedule+0x937/0x1ff0 [ 575.445558][ T1137] ? __sched_text_start+0x8/0x8 [ 575.445584][ T1137] ? schedule+0xd0/0x2a0 [ 575.445600][ T1137] ? schedule_preempt_disabled+0xf/0x20 [ 575.445612][ T1137] ? __mutex_lock+0x7ab/0x13c0 [ 575.445628][ T1137] ? fb_open+0xd3/0x430 [ 575.445646][ T1137] ? mutex_trylock+0x2c0/0x2c0 [ 575.445664][ T1137] ? __mutex_unlock_slowpath+0xe2/0x660 [ 575.445677][ T1137] ? chrdev_open+0xc4/0x5c0 [ 575.445697][ T1137] ? lock_downgrade+0x840/0x840 [ 575.445719][ T1137] ? fb_open+0xd3/0x430 [ 575.445731][ T1137] ? fb_open+0xd3/0x430 [ 575.445747][ T1137] ? get_fb_info.part.0+0x80/0x80 [ 575.445760][ T1137] ? chrdev_open+0x219/0x5c0 [ 575.445776][ T1137] ? cdev_put.part.0+0x50/0x50 [ 575.445793][ T1137] ? security_file_open+0x84/0x410 [ 575.445811][ T1137] ? do_dentry_open+0x4ba/0x1290 [ 575.445826][ T1137] ? cdev_put.part.0+0x50/0x50 [ 575.445845][ T1137] ? security_inode_permission+0xc4/0xf0 [ 575.445859][ T1137] ? chown_common+0x550/0x550 [ 575.445875][ T1137] ? inode_permission+0xab/0x500 [ 575.445897][ T1137] ? path_openat+0x1e59/0x27d0 [ 575.445921][ T1137] ? path_lookupat.isra.0+0x530/0x530 [ 575.445939][ T1137] ? lock_acquire+0x1f2/0x8f0 [ 575.445963][ T1137] ? do_filp_open+0x192/0x260 [ 575.445978][ T1137] ? may_open_dev+0xf0/0xf0 [ 575.446000][ T1137] ? do_raw_spin_lock+0x129/0x2e0 [ 575.446025][ T1137] ? _raw_spin_unlock+0x24/0x40 [ 575.446039][ T1137] ? __alloc_fd+0x46d/0x600 [ 575.446062][ T1137] ? do_sys_openat2+0x585/0x7d0 [ 575.446079][ T1137] ? file_open_root+0x400/0x400 [ 575.446101][ T1137] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 575.446120][ T1137] ? do_sys_open+0xc3/0x140 [ 575.446134][ T1137] ? filp_open+0x70/0x70 [ 575.446153][ T1137] ? fpregs_mark_activate+0x320/0x320 [ 575.446168][ T1137] ? trace_hardirqs_off_caller+0x55/0x230 [ 575.446196][ T1137] ? do_syscall_64+0xf6/0x7d0 [ 575.446216][ T1137] ? entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 575.446242][ T1137] INFO: task syz-executor870:7065 blocked for more than 143 seconds. [ 575.446250][ T1137] Not tainted 5.7.0-rc5-syzkaller #0 [ 575.446256][ T1137] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 575.446262][ T1137] syz-executor870 D27856 7065 7057 0x00000004 [ 575.446282][ T1137] Call Trace: [ 575.446302][ T1137] ? __schedule+0x937/0x1ff0 [ 575.446324][ T1137] ? __sched_text_start+0x8/0x8 [ 575.446351][ T1137] ? schedule+0xd0/0x2a0 [ 575.446366][ T1137] ? schedule_preempt_disabled+0xf/0x20 [ 575.446378][ T1137] ? __mutex_lock+0x7ab/0x13c0 [ 575.446394][ T1137] ? fb_open+0xd3/0x430 [ 575.446412][ T1137] ? mutex_trylock+0x2c0/0x2c0 [ 575.446431][ T1137] ? __mutex_unlock_slowpath+0xe2/0x660 [ 575.446444][ T1137] ? chrdev_open+0xc4/0x5c0 [ 575.446464][ T1137] ? lock_downgrade+0x840/0x840 [ 575.446485][ T1137] ? fb_open+0xd3/0x430 [ 575.446497][ T1137] ? fb_open+0xd3/0x430 [ 575.446513][ T1137] ? get_fb_info.part.0+0x80/0x80 [ 575.446526][ T1137] ? chrdev_open+0x219/0x5c0 [ 575.446542][ T1137] ? cdev_put.part.0+0x50/0x50 [ 575.446560][ T1137] ? security_file_open+0x84/0x410 [ 575.446577][ T1137] ? do_dentry_open+0x4ba/0x1290 [ 575.446593][ T1137] ? cdev_put.part.0+0x50/0x50 [ 575.446612][ T1137] ? security_inode_permission+0xc4/0xf0 [ 575.446625][ T1137] ? chown_common+0x550/0x550 [ 575.446642][ T1137] ? inode_permission+0xab/0x500 [ 575.446663][ T1137] ? path_openat+0x1e59/0x27d0 [ 575.446687][ T1137] ? path_lookupat.isra.0+0x530/0x530 [ 575.446706][ T1137] ? lock_acquire+0x1f2/0x8f0 [ 575.446729][ T1137] ? do_filp_open+0x192/0x260 [ 575.446744][ T1137] ? may_open_dev+0xf0/0xf0 [ 575.446766][ T1137] ? do_raw_spin_lock+0x129/0x2e0 [ 575.446792][ T1137] ? _raw_spin_unlock+0x24/0x40 [ 575.446805][ T1137] ? __alloc_fd+0x46d/0x600 [ 575.446828][ T1137] ? do_sys_openat2+0x585/0x7d0 [ 575.446845][ T1137] ? file_open_root+0x400/0x400 [ 575.446867][ T1137] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 575.446886][ T1137] ? do_sys_open+0xc3/0x140 [ 575.446900][ T1137] ? filp_open+0x70/0x70 [ 575.446919][ T1137] ? fpregs_mark_activate+0x320/0x320 [ 575.446934][ T1137] ? trace_hardirqs_off_caller+0x55/0x230 [ 575.446957][ T1137] ? do_syscall_64+0xf6/0x7d0 [ 575.446976][ T1137] ? entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 575.447008][ T1137] INFO: task syz-executor870:7066 blocked for more than 143 seconds. [ 575.447016][ T1137] Not tainted 5.7.0-rc5-syzkaller #0 [ 575.447022][ T1137] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 575.447028][ T1137] syz-executor870 D28120 7066 7062 0x00000004 [ 575.447047][ T1137] Call Trace: [ 575.447067][ T1137] ? __schedule+0x937/0x1ff0 [ 575.447090][ T1137] ? __sched_text_start+0x8/0x8 [ 575.447116][ T1137] ? schedule+0xd0/0x2a0 [ 575.447132][ T1137] ? schedule_preempt_disabled+0xf/0x20 [ 575.447144][ T1137] ? __mutex_lock+0x7ab/0x13c0 [ 575.447160][ T1137] ? fb_open+0xd3/0x430 [ 575.447178][ T1137] ? mutex_trylock+0x2c0/0x2c0 [ 575.447201][ T1137] ? __mutex_unlock_slowpath+0xe2/0x660 [ 575.447214][ T1137] ? chrdev_open+0xc4/0x5c0 [ 575.447234][ T1137] ? lock_downgrade+0x840/0x840 [ 575.447256][ T1137] ? fb_open+0xd3/0x430 [ 575.447268][ T1137] ? fb_open+0xd3/0x430 [ 575.447284][ T1137] ? get_fb_info.part.0+0x80/0x80 [ 575.447297][ T1137] ? chrdev_open+0x219/0x5c0 [ 575.447313][ T1137] ? cdev_put.part.0+0x50/0x50 [ 575.447330][ T1137] ? security_file_open+0x84/0x410 [ 575.447348][ T1137] ? do_dentry_open+0x4ba/0x1290 [ 575.447363][ T1137] ? cdev_put.part.0+0x50/0x50 [ 575.447382][ T1137] ? security_inode_permission+0xc4/0xf0 [ 575.447396][ T1137] ? chown_common+0x550/0x550 [ 575.447413][ T1137] ? inode_permission+0xab/0x500 [ 575.447434][ T1137] ? path_openat+0x1e59/0x27d0 [ 575.447458][ T1137] ? path_lookupat.isra.0+0x530/0x530 [ 575.447477][ T1137] ? lock_acquire+0x1f2/0x8f0 [ 575.447500][ T1137] ? do_filp_open+0x192/0x260 [ 575.447515][ T1137] ? may_open_dev+0xf0/0xf0 [ 575.447537][ T1137] ? do_raw_spin_lock+0x129/0x2e0 [ 575.447563][ T1137] ? _raw_spin_unlock+0x24/0x40 [ 575.447576][ T1137] ? __alloc_fd+0x46d/0x600 [ 575.447599][ T1137] ? do_sys_openat2+0x585/0x7d0 [ 575.447616][ T1137] ? file_open_root+0x400/0x400 [ 575.447639][ T1137] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 575.447657][ T1137] ? do_sys_open+0xc3/0x140 [ 575.447671][ T1137] ? filp_open+0x70/0x70 [ 575.447689][ T1137] ? fpregs_mark_activate+0x320/0x320 [ 575.447705][ T1137] ? trace_hardirqs_off_caller+0x55/0x230 [ 575.447728][ T1137] ? do_syscall_64+0xf6/0x7d0 [ 575.447747][ T1137] ? entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 575.447774][ T1137] INFO: task syz-executor870:7067 blocked for more than 143 seconds. [ 575.447782][ T1137] Not tainted 5.7.0-rc5-syzkaller #0 [ 575.447787][ T1137] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 575.447794][ T1137] syz-executor870 D28120 7067 7059 0x00004004 [ 575.447814][ T1137] Call Trace: [ 575.447834][ T1137] ? __schedule+0x937/0x1ff0 [ 575.447857][ T1137] ? __sched_text_start+0x8/0x8 [ 575.447883][ T1137] ? schedule+0xd0/0x2a0 [ 575.447899][ T1137] ? schedule_preempt_disabled+0xf/0x20 [ 575.447911][ T1137] ? __mutex_lock+0x7ab/0x13c0 [ 575.447927][ T1137] ? fb_open+0xd3/0x430 [ 575.447945][ T1137] ? mutex_trylock+0x2c0/0x2c0 [ 575.447963][ T1137] ? __mutex_unlock_slowpath+0xe2/0x660 [ 575.447976][ T1137] ? chrdev_open+0xc4/0x5c0 [ 575.447996][ T1137] ? lock_downgrade+0x840/0x840 [ 575.448018][ T1137] ? fb_open+0xd3/0x430 [ 575.448029][ T1137] ? fb_open+0xd3/0x430 [ 575.448045][ T1137] ? get_fb_info.part.0+0x80/0x80 [ 575.448058][ T1137] ? chrdev_open+0x219/0x5c0 [ 575.448074][ T1137] ? cdev_put.part.0+0x50/0x50 [ 575.448091][ T1137] ? security_file_open+0x84/0x410 [ 575.448109][ T1137] ? do_dentry_open+0x4ba/0x1290 [ 575.448124][ T1137] ? cdev_put.part.0+0x50/0x50 [ 575.448143][ T1137] ? security_inode_permission+0xc4/0xf0 [ 575.448157][ T1137] ? chown_common+0x550/0x550 [ 575.448174][ T1137] ? inode_permission+0xab/0x500 [ 575.448199][ T1137] ? path_openat+0x1e59/0x27d0 [ 575.448223][ T1137] ? path_lookupat.isra.0+0x530/0x530 [ 575.448242][ T1137] ? lock_acquire+0x1f2/0x8f0 [ 575.448266][ T1137] ? do_filp_open+0x192/0x260 [ 575.448281][ T1137] ? may_open_dev+0xf0/0xf0 [ 575.448303][ T1137] ? do_raw_spin_lock+0x129/0x2e0 [ 575.448328][ T1137] ? _raw_spin_unlock+0x24/0x40 [ 575.448342][ T1137] ? __alloc_fd+0x46d/0x600 [ 575.448365][ T1137] ? do_sys_openat2+0x585/0x7d0 [ 575.448382][ T1137] ? file_open_root+0x400/0x400 [ 575.448405][ T1137] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 575.448423][ T1137] ? do_sys_open+0xc3/0x140 [ 575.448437][ T1137] ? filp_open+0x70/0x70 [ 575.448456][ T1137] ? fpregs_mark_activate+0x320/0x320 [ 575.448471][ T1137] ? trace_hardirqs_off_caller+0x55/0x230 [ 575.448494][ T1137] ? do_syscall_64+0xf6/0x7d0 [ 575.448513][ T1137] ? entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 575.448535][ T1137] [ 575.448535][ T1137] Showing all locks held in the system: [ 575.448548][ T1137] 1 lock held by khungtaskd/1137: [ 575.448553][ T1137] #0: ffffffff899bea80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 575.448614][ T1137] 1 lock held by in:imklog/6726: [ 575.448619][ T1137] #0: ffff8880996270f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 575.448655][ T1137] 2 locks held by syz-executor870/7058: [ 575.448664][ T1137] 1 lock held by syz-executor870/7063: [ 575.448669][ T1137] #0: ffff8880a3b8b078 (&fb_info->lock){+.+.}-{3:3}, at: fb_open+0xd3/0x430 [ 575.448699][ T1137] 1 lock held by syz-executor870/7064: [ 575.448704][ T1137] #0: ffff8880a3b8b078 (&fb_info->lock){+.+.}-{3:3}, at: fb_open+0xd3/0x430 [ 575.448735][ T1137] 1 lock held by syz-executor870/7065: [ 575.448740][ T1137] #0: ffff8880a3b8b078 (&fb_info->lock){+.+.}-{3:3}, at: fb_open+0xd3/0x430 [ 575.448771][ T1137] 1 lock held by syz-executor870/7066: [ 575.448776][ T1137] #0: ffff8880a3b8b078 (&fb_info->lock){+.+.}-{3:3}, at: fb_open+0xd3/0x430 [ 575.448807][ T1137] 1 lock held by syz-executor870/7067: [ 575.448812][ T1137] #0: ffff8880a3b8b078 (&fb_info->lock){+.+.}-{3:3}, at: fb_open+0xd3/0x430 [ 575.448839][ T1137] [ 575.448844][ T1137] ============================================= [ 575.448844][ T1137] [ 575.448850][ T1137] NMI backtrace for cpu 1 [ 575.448864][ T1137] CPU: 1 PID: 1137 Comm: khungtaskd Not tainted 5.7.0-rc5-syzkaller #0 [ 575.448872][ T1137] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 575.448876][ T1137] Call Trace: [ 575.448966][ T1137] dump_stack+0x188/0x20d [ 575.449004][ T1137] nmi_cpu_backtrace.cold+0x70/0xb1 [ 575.449051][ T1137] ? lapic_can_unplug_cpu.cold+0x3b/0x3b [ 575.449065][ T1137] nmi_trigger_cpumask_backtrace+0x231/0x27e [ 575.449100][ T1137] watchdog+0xa8c/0x1010 [ 575.449120][ T1137] ? reset_hung_task_detector+0x30/0x30 [ 575.449171][ T1137] kthread+0x388/0x470 [ 575.449186][ T1137] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 575.449207][ T1137] ret_from_fork+0x24/0x30 [ 575.449231][ T1137] Sending NMI from CPU 1 to CPUs 0: [ 575.449912][ C0] NMI backtrace for cpu 0 [ 575.449918][ C0] CPU: 0 PID: 7058 Comm: syz-executor870 Not tainted 5.7.0-rc5-syzkaller #0 [ 575.449923][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 575.449927][ C0] RIP: 0010:vga16fb_fillrect+0x9d3/0x1960 [ 575.449936][ C0] Code: 08 e8 31 ea af fd 31 ff 89 de 31 ed e8 96 eb af fd 85 db 4d 89 ec 74 22 e8 1a ea af fd 45 88 34 24 83 c5 01 89 df 49 83 c4 01 <89> ee e8 f6 ea af fd 39 eb 75 e3 4c 03 6c 24 08 e8 f8 e9 af fd 44 [ 575.449940][ C0] RSP: 0018:ffffc90001ab75a0 EFLAGS: 00000282 [ 575.449947][ C0] RAX: ffff8880a91d21c0 RBX: 0000000000000050 RCX: ffffffff83c3496a [ 575.449951][ C0] RDX: 0000000000000000 RSI: ffffffff83c34956 RDI: 0000000000000050 [ 575.449955][ C0] RBP: 0000000000000019 R08: ffff8880a91d21c0 R09: ffffed10147713cc [ 575.449960][ C0] R10: ffff8880a3b89e5f R11: ffffed10147713cb R12: ffff8880000a0019 [ 575.449965][ C0] R13: ffff8880000a0000 R14: 0000000000000000 R15: 00000000e9124d8e [ 575.449969][ C0] FS: 0000000001a2b880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 575.449973][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 575.449978][ C0] CR2: 00000000006cc080 CR3: 00000000a966d000 CR4: 00000000001406f0 [ 575.449982][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 575.449987][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 575.449989][ C0] Call Trace: [ 575.449992][ C0] ? memcpy+0x39/0x60 [ 575.449995][ C0] bit_clear_margins+0x2d5/0x4a0 [ 575.449998][ C0] ? bit_bmove+0x210/0x210 [ 575.450001][ C0] ? vesafb_probe.cold+0x1162/0x1162 [ 575.450004][ C0] fbcon_clear_margins+0x1de/0x240 [ 575.450007][ C0] fbcon_switch+0xcde/0x16f0 [ 575.450010][ C0] ? fbcon_set_def_font+0x370/0x370 [ 575.450013][ C0] ? fbcon_cursor+0x477/0x650 [ 575.450016][ C0] ? bit_clear+0x4e0/0x4e0 [ 575.450019][ C0] ? is_console_locked+0x5/0x10 [ 575.450022][ C0] ? fbcon_set_origin+0x26/0x50 [ 575.450025][ C0] redraw_screen+0x2ae/0x770 [ 575.450028][ C0] ? vesafb_probe.cold+0x1162/0x1162 [ 575.450032][ C0] ? respond_string+0x290/0x290 [ 575.450035][ C0] ? fbcon_set_palette+0x3b1/0x4a0 [ 575.450038][ C0] fbcon_modechanged+0x581/0x720 [ 575.450041][ C0] fbcon_update_vcs+0x3a/0x50 [ 575.450044][ C0] fb_set_var+0xad0/0xd40 [ 575.450047][ C0] ? fb_blank+0x190/0x190 [ 575.450050][ C0] ? mark_held_locks+0xe0/0xe0 [ 575.450053][ C0] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 575.450056][ C0] do_fb_ioctl+0x390/0x6e0 [ 575.450059][ C0] ? fb_mmap+0x550/0x550 [ 575.450062][ C0] ? tomoyo_execute_permission+0x470/0x470 [ 575.450066][ C0] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 575.450069][ C0] ? do_vfs_ioctl+0x50c/0x1360 [ 575.450072][ C0] ? up_read+0x1ab/0x750 [ 575.450075][ C0] ? down_read_nested+0x420/0x420 [ 575.450078][ C0] fb_ioctl+0xdd/0x130 [ 575.450081][ C0] ? do_fb_ioctl+0x6e0/0x6e0 [ 575.450083][ C0] ksys_ioctl+0x11a/0x180 [ 575.450086][ C0] __x64_sys_ioctl+0x6f/0xb0 [ 575.450090][ C0] ? lockdep_hardirqs_on+0x463/0x620 [ 575.450092][ C0] do_syscall_64+0xf6/0x7d0 [ 575.450096][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 575.450099][ C0] RIP: 0033:0x441469 [ 575.450108][ C0] Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 575.450112][ C0] RSP: 002b:00007ffcc884a288 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 575.450119][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441469 [ 575.450124][ C0] RDX: 0000000020000340 RSI: 0000000000004601 RDI: 0000000000000003 [ 575.450128][ C0] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 575.450133][ C0] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000004021e0 [ 575.450137][ C0] R13: 0000000000402270 R14: 0000000000000000 R15: 0000000000000000 [ 575.450249][ T1137] Kernel panic - not syncing: hung_task: blocked tasks [ 575.450260][ T1137] CPU: 1 PID: 1137 Comm: khungtaskd Not tainted 5.7.0-rc5-syzkaller #0 [ 575.450267][ T1137] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 575.450270][ T1137] Call Trace: [ 575.450283][ T1137] dump_stack+0x188/0x20d [ 575.450321][ T1137] panic+0x2e3/0x75c [ 575.450334][ T1137] ? add_taint.cold+0x16/0x16 [ 575.450349][ T1137] ? cpumask_next+0x3c/0x40 [ 575.450360][ T1137] ? printk_safe_flush+0xd9/0x120 [ 575.450370][ T1137] ? watchdog+0xa8c/0x1010 [ 575.450381][ T1137] ? nmi_trigger_cpumask_backtrace+0x214/0x27e [ 575.450393][ T1137] watchdog+0xa9d/0x1010 [ 575.450408][ T1137] ? reset_hung_task_detector+0x30/0x30 [ 575.450420][ T1137] kthread+0x388/0x470 [ 575.450431][ T1137] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 575.450445][ T1137] ret_from_fork+0x24/0x30 [ 575.452137][ T1137] Kernel Offset: disabled [ 577.202189][ T1137] Rebooting in 86400 seconds..