Warning: Permanently added '10.128.0.48' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
executing program
executing program
executing program
[ 595.897057][ T1129] INFO: task syz-executor130:7018 blocked for more than 143 seconds.
[ 595.897078][ T1129] Not tainted 5.6.0-rc7-syzkaller #0
[ 595.897083][ T1129] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 595.897090][ T1129] syz-executor130 D28328 7018 7017 0x00004004
[ 595.897113][ T1129] Call Trace:
[ 595.897252][ T1129] ? __schedule+0x934/0x1f90
[ 595.897278][ T1129] ? __sched_text_start+0x8/0x8
[ 595.897308][ T1129] schedule+0xd0/0x2a0
[ 595.897328][ T1129] schedule_preempt_disabled+0xf/0x20
[ 595.897381][ T1129] __mutex_lock+0x7ab/0x13c0
[ 595.897429][ T1129] ? fb_open+0xd3/0x430
[ 595.897453][ T1129] ? mutex_trylock+0x2c0/0x2c0
[ 595.897475][ T1129] ? __mutex_unlock_slowpath+0xe2/0x660
[ 595.897518][ T1129] ? chrdev_open+0xc4/0x5c0
[ 595.897567][ T1129] ? lock_downgrade+0x7f0/0x7f0
[ 595.897595][ T1129] ? fb_open+0xd3/0x430
[ 595.897606][ T1129] fb_open+0xd3/0x430
[ 595.897623][ T1129] ? get_fb_info.part.0+0x80/0x80
[ 595.897636][ T1129] chrdev_open+0x219/0x5c0
[ 595.897651][ T1129] ? rwlock_bug.part.0+0x90/0x90
[ 595.897665][ T1129] ? cdev_put.part.0+0x50/0x50
[ 595.897722][ T1129] do_dentry_open+0x4a2/0x1250
[ 595.897740][ T1129] ? cdev_put.part.0+0x50/0x50
[ 595.897816][ T1129] ? security_inode_permission+0xc4/0xf0
[ 595.897831][ T1129] ? chown_common+0x550/0x550
[ 595.897876][ T1129] ? inode_permission+0xab/0x500
[ 595.897903][ T1129] path_openat+0x122a/0x32b0
[ 595.897940][ T1129] ? path_mountpoint.isra.0+0x370/0x370
[ 595.897951][ T1129] ? __lock_acquire+0x14bd/0x3ca0
[ 595.897971][ T1129] ? __lock_acquire+0x14bd/0x3ca0
[ 595.898001][ T1129] do_filp_open+0x192/0x260
[ 595.898018][ T1129] ? may_open_dev+0xf0/0xf0
[ 595.898047][ T1129] ? do_raw_spin_lock+0x129/0x2e0
[ 595.898079][ T1129] ? _raw_spin_unlock+0x24/0x40
[ 595.898100][ T1129] ? __alloc_fd+0x46d/0x600
[ 595.898129][ T1129] do_sys_openat2+0x54c/0x740
[ 595.898149][ T1129] ? file_open_root+0x3d0/0x3d0
[ 595.898222][ T1129] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 595.898244][ T1129] do_sys_open+0xc3/0x140
[ 595.898259][ T1129] ? filp_open+0x70/0x70
[ 595.898334][ T1129] ? fpregs_mark_activate+0x320/0x320
[ 595.898401][ T1129] ? trace_hardirqs_off_caller+0x55/0x230
[ 595.898451][ T1129] do_syscall_64+0xf6/0x7d0
[ 595.898471][ T1129] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 595.898483][ T1129] RIP: 0033:0x441419
[ 595.898513][ T1129] Code: Bad RIP value.
[ 595.898520][ T1129] RSP: 002b:00007ffe2c95c3b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[ 595.898533][ T1129] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
[ 595.898542][ T1129] RDX: 0000000000000000 RSI: 0000000020000180 RDI: ffffffffffffff9c
[ 595.898550][ T1129] RBP: 00000000006cb018 R08: 0000000000000004 R09: 00000000004002c8
[ 595.898558][ T1129] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402190
[ 595.898566][ T1129] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000
[ 595.898604][ T1129] INFO: task syz-executor130:7019 blocked for more than 143 seconds.
[ 595.898612][ T1129] Not tainted 5.6.0-rc7-syzkaller #0
[ 595.898617][ T1129] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 595.898622][ T1129] syz-executor130 D28328 7019 7014 0x00004004
[ 595.898643][ T1129] Call Trace:
[ 595.898665][ T1129] ? __schedule+0x934/0x1f90
[ 595.898690][ T1129] ? __sched_text_start+0x8/0x8
[ 595.898721][ T1129] schedule+0xd0/0x2a0
[ 595.898739][ T1129] schedule_preempt_disabled+0xf/0x20
[ 595.898752][ T1129] __mutex_lock+0x7ab/0x13c0
[ 595.898770][ T1129] ? fb_open+0xd3/0x430
[ 595.898793][ T1129] ? mutex_trylock+0x2c0/0x2c0
[ 595.898815][ T1129] ? __mutex_unlock_slowpath+0xe2/0x660
[ 595.898829][ T1129] ? chrdev_open+0xc4/0x5c0
[ 595.898850][ T1129] ? lock_downgrade+0x7f0/0x7f0
[ 595.898882][ T1129] ? fb_open+0xd3/0x430
[ 595.898893][ T1129] fb_open+0xd3/0x430
[ 595.898910][ T1129] ? get_fb_info.part.0+0x80/0x80
[ 595.898923][ T1129] chrdev_open+0x219/0x5c0
[ 595.898937][ T1129] ? rwlock_bug.part.0+0x90/0x90
[ 595.898952][ T1129] ? cdev_put.part.0+0x50/0x50
[ 595.898982][ T1129] do_dentry_open+0x4a2/0x1250
[ 595.899000][ T1129] ? cdev_put.part.0+0x50/0x50
[ 595.899018][ T1129] ? security_inode_permission+0xc4/0xf0
[ 595.899032][ T1129] ? chown_common+0x550/0x550
[ 595.899046][ T1129] ? inode_permission+0xab/0x500
[ 595.899073][ T1129] path_openat+0x122a/0x32b0
[ 595.899109][ T1129] ? path_mountpoint.isra.0+0x370/0x370
[ 595.899121][ T1129] ? __lock_acquire+0x14bd/0x3ca0
[ 595.899141][ T1129] ? __lock_acquire+0x14bd/0x3ca0
[ 595.899170][ T1129] do_filp_open+0x192/0x260
[ 595.899187][ T1129] ? may_open_dev+0xf0/0xf0
[ 595.899216][ T1129] ? do_raw_spin_lock+0x129/0x2e0
[ 595.899247][ T1129] ? _raw_spin_unlock+0x24/0x40
[ 595.899261][ T1129] ? __alloc_fd+0x46d/0x600
[ 595.899290][ T1129] do_sys_openat2+0x54c/0x740
[ 595.899309][ T1129] ? file_open_root+0x3d0/0x3d0
[ 595.899334][ T1129] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 595.899356][ T1129] do_sys_open+0xc3/0x140
[ 595.899371][ T1129] ? filp_open+0x70/0x70
[ 595.899388][ T1129] ? fpregs_mark_activate+0x320/0x320
[ 595.899405][ T1129] ? trace_hardirqs_off_caller+0x55/0x230
[ 595.899432][ T1129] do_syscall_64+0xf6/0x7d0
[ 595.899451][ T1129] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 595.899460][ T1129] RIP: 0033:0x441419
[ 595.899473][ T1129] Code: Bad RIP value.
[ 595.899480][ T1129] RSP: 002b:00007ffe2c95c3b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[ 595.899492][ T1129] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
[ 595.899500][ T1129] RDX: 0000000000000000 RSI: 0000000020000180 RDI: ffffffffffffff9c
[ 595.899508][ T1129] RBP: 00000000006cb018 R08: 0000000000000004 R09: 00000000004002c8
[ 595.899516][ T1129] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402190
[ 595.899522][ T1129] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000
[ 595.899558][ T1129] INFO: task syz-executor130:7020 blocked for more than 143 seconds.
[ 595.899566][ T1129] Not tainted 5.6.0-rc7-syzkaller #0
[ 595.899571][ T1129] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 595.899576][ T1129] syz-executor130 D28328 7020 7016 0x00000004
[ 595.899596][ T1129] Call Trace:
[ 595.899617][ T1129] ? __schedule+0x934/0x1f90
[ 595.899642][ T1129] ? __sched_text_start+0x8/0x8
[ 595.899673][ T1129] schedule+0xd0/0x2a0
[ 595.899692][ T1129] schedule_preempt_disabled+0xf/0x20
[ 595.899704][ T1129] __mutex_lock+0x7ab/0x13c0
[ 595.899722][ T1129] ? fb_open+0xd3/0x430
[ 595.899745][ T1129] ? mutex_trylock+0x2c0/0x2c0
[ 595.899767][ T1129] ? __mutex_unlock_slowpath+0xe2/0x660
[ 595.899780][ T1129] ? chrdev_open+0xc4/0x5c0
[ 595.899801][ T1129] ? lock_downgrade+0x7f0/0x7f0
[ 595.899828][ T1129] ? fb_open+0xd3/0x430
[ 595.899839][ T1129] fb_open+0xd3/0x430
[ 595.899861][ T1129] ? get_fb_info.part.0+0x80/0x80
[ 595.899874][ T1129] chrdev_open+0x219/0x5c0
[ 595.899888][ T1129] ? rwlock_bug.part.0+0x90/0x90
[ 595.899903][ T1129] ? cdev_put.part.0+0x50/0x50
[ 595.899933][ T1129] do_dentry_open+0x4a2/0x1250
[ 595.899950][ T1129] ? cdev_put.part.0+0x50/0x50
[ 595.899969][ T1129] ? security_inode_permission+0xc4/0xf0
[ 595.899983][ T1129] ? chown_common+0x550/0x550
[ 595.899997][ T1129] ? inode_permission+0xab/0x500
[ 595.900024][ T1129] path_openat+0x122a/0x32b0
[ 595.900060][ T1129] ? path_mountpoint.isra.0+0x370/0x370
[ 595.900081][ T1129] ? __lock_acquire+0x14bd/0x3ca0
[ 595.900111][ T1129] do_filp_open+0x192/0x260
[ 595.900127][ T1129] ? may_open_dev+0xf0/0xf0
[ 595.900156][ T1129] ? do_raw_spin_lock+0x129/0x2e0
[ 595.900188][ T1129] ? _raw_spin_unlock+0x24/0x40
[ 595.900201][ T1129] ? __alloc_fd+0x46d/0x600
[ 595.900230][ T1129] do_sys_openat2+0x54c/0x740
[ 595.900249][ T1129] ? file_open_root+0x3d0/0x3d0
[ 595.900274][ T1129] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 595.900296][ T1129] do_sys_open+0xc3/0x140
[ 595.900310][ T1129] ? filp_open+0x70/0x70
[ 595.900328][ T1129] ? fpregs_mark_activate+0x320/0x320
[ 595.900344][ T1129] ? trace_hardirqs_off_caller+0x55/0x230
[ 595.900370][ T1129] do_syscall_64+0xf6/0x7d0
[ 595.900389][ T1129] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 595.900398][ T1129] RIP: 0033:0x441419
[ 595.900412][ T1129] Code: Bad RIP value.
[ 595.900419][ T1129] RSP: 002b:00007ffe2c95c3b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[ 595.900431][ T1129] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
[ 595.900439][ T1129] RDX: 0000000000000000 RSI: 0000000020000180 RDI: ffffffffffffff9c
[ 595.900447][ T1129] RBP: 00000000006cb018 R08: 0000000000000004 R09: 00000000004002c8
[ 595.900455][ T1129] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402190
[ 595.900462][ T1129] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000
[ 595.900498][ T1129] INFO: task syz-executor130:7021 blocked for more than 143 seconds.
[ 595.900505][ T1129] Not tainted 5.6.0-rc7-syzkaller #0
[ 595.900511][ T1129] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 595.900516][ T1129] syz-executor130 D28328 7021 7012 0x00004004
[ 595.900534][ T1129] Call Trace:
[ 595.900554][ T1129] ? __schedule+0x934/0x1f90
[ 595.900579][ T1129] ? __sched_text_start+0x8/0x8
[ 595.900610][ T1129] schedule+0xd0/0x2a0
[ 595.900629][ T1129] schedule_preempt_disabled+0xf/0x20
[ 595.900642][ T1129] __mutex_lock+0x7ab/0x13c0
[ 595.900659][ T1129] ? fb_open+0xd3/0x430
[ 595.900682][ T1129] ? mutex_trylock+0x2c0/0x2c0
[ 595.900705][ T1129] ? __mutex_unlock_slowpath+0xe2/0x660
[ 595.900718][ T1129] ? chrdev_open+0xc4/0x5c0
[ 595.900739][ T1129] ? lock_downgrade+0x7f0/0x7f0
[ 595.900766][ T1129] ? fb_open+0xd3/0x430
[ 595.900777][ T1129] fb_open+0xd3/0x430
[ 595.900794][ T1129] ? get_fb_info.part.0+0x80/0x80
[ 595.900806][ T1129] chrdev_open+0x219/0x5c0
[ 595.900820][ T1129] ? rwlock_bug.part.0+0x90/0x90
[ 595.900835][ T1129] ? cdev_put.part.0+0x50/0x50
[ 595.900870][ T1129] do_dentry_open+0x4a2/0x1250
[ 595.900887][ T1129] ? cdev_put.part.0+0x50/0x50
[ 595.900905][ T1129] ? security_inode_permission+0xc4/0xf0
[ 595.900920][ T1129] ? chown_common+0x550/0x550
[ 595.900933][ T1129] ? inode_permission+0xab/0x500
[ 595.900960][ T1129] path_openat+0x122a/0x32b0
[ 595.900996][ T1129] ? path_mountpoint.isra.0+0x370/0x370
[ 595.901018][ T1129] ? __lock_acquire+0x14bd/0x3ca0
[ 595.901047][ T1129] do_filp_open+0x192/0x260
[ 595.901064][ T1129] ? may_open_dev+0xf0/0xf0
[ 595.901093][ T1129] ? do_raw_spin_lock+0x129/0x2e0
[ 595.901124][ T1129] ? _raw_spin_unlock+0x24/0x40
[ 595.901137][ T1129] ? __alloc_fd+0x46d/0x600
[ 595.901166][ T1129] do_sys_openat2+0x54c/0x740
[ 595.901186][ T1129] ? file_open_root+0x3d0/0x3d0
[ 595.901211][ T1129] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 595.901232][ T1129] do_sys_open+0xc3/0x140
[ 595.901246][ T1129] ? filp_open+0x70/0x70
[ 595.901264][ T1129] ? fpregs_mark_activate+0x320/0x320
[ 595.901281][ T1129] ? trace_hardirqs_off_caller+0x55/0x230
[ 595.901307][ T1129] do_syscall_64+0xf6/0x7d0
[ 595.901327][ T1129] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 595.901336][ T1129] RIP: 0033:0x441419
[ 595.901348][ T1129] Code: Bad RIP value.
[ 595.901355][ T1129] RSP: 002b:00007ffe2c95c3b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[ 595.901367][ T1129] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
[ 595.901375][ T1129] RDX: 0000000000000000 RSI: 0000000020000180 RDI: ffffffffffffff9c
[ 595.901383][ T1129] RBP: 00000000006cb018 R08: 0000000000000004 R09: 00000000004002c8
[ 595.901391][ T1129] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402190
[ 595.901398][ T1129] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000
[ 595.901434][ T1129] INFO: task syz-executor130:7022 blocked for more than 143 seconds.
[ 595.901441][ T1129] Not tainted 5.6.0-rc7-syzkaller #0
[ 595.901446][ T1129] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 595.901452][ T1129] syz-executor130 D28328 7022 7015 0x00000004
[ 595.901471][ T1129] Call Trace:
[ 595.901492][ T1129] ? __schedule+0x934/0x1f90
[ 595.901517][ T1129] ? __sched_text_start+0x8/0x8
[ 595.901547][ T1129] schedule+0xd0/0x2a0
[ 595.901566][ T1129] schedule_preempt_disabled+0xf/0x20
[ 595.901579][ T1129] __mutex_lock+0x7ab/0x13c0
[ 595.901597][ T1129] ? fb_open+0xd3/0x430
[ 595.901619][ T1129] ? mutex_trylock+0x2c0/0x2c0
[ 595.901641][ T1129] ? __mutex_unlock_slowpath+0xe2/0x660
[ 595.901654][ T1129] ? chrdev_open+0xc4/0x5c0
[ 595.901676][ T1129] ? lock_downgrade+0x7f0/0x7f0
[ 595.901702][ T1129] ? fb_open+0xd3/0x430
[ 595.901713][ T1129] fb_open+0xd3/0x430
[ 595.901730][ T1129] ? get_fb_info.part.0+0x80/0x80
[ 595.901743][ T1129] chrdev_open+0x219/0x5c0
[ 595.901757][ T1129] ? rwlock_bug.part.0+0x90/0x90
[ 595.901772][ T1129] ? cdev_put.part.0+0x50/0x50
[ 595.901802][ T1129] do_dentry_open+0x4a2/0x1250
[ 595.901819][ T1129] ? cdev_put.part.0+0x50/0x50
[ 595.901838][ T1129] ? security_inode_permission+0xc4/0xf0
[ 595.901856][ T1129] ? chown_common+0x550/0x550
[ 595.901870][ T1129] ? inode_permission+0xab/0x500
[ 595.901897][ T1129] path_openat+0x122a/0x32b0
[ 595.901933][ T1129] ? path_mountpoint.isra.0+0x370/0x370
[ 595.901944][ T1129] ? __lock_acquire+0x14bd/0x3ca0
[ 595.901964][ T1129] ? __lock_acquire+0x14bd/0x3ca0
[ 595.901994][ T1129] do_filp_open+0x192/0x260
[ 595.902011][ T1129] ? may_open_dev+0xf0/0xf0
[ 595.902040][ T1129] ? do_raw_spin_lock+0x129/0x2e0
[ 595.902070][ T1129] ? _raw_spin_unlock+0x24/0x40
[ 595.902084][ T1129] ? __alloc_fd+0x46d/0x600
[ 595.902113][ T1129] do_sys_openat2+0x54c/0x740
[ 595.902133][ T1129] ? file_open_root+0x3d0/0x3d0
[ 595.902157][ T1129] ? rcu_read_lock_sched_held+0x9c/0xd0
[ 595.902179][ T1129] do_sys_open+0xc3/0x140
[ 595.902194][ T1129] ? filp_open+0x70/0x70
[ 595.902212][ T1129] ? fpregs_mark_activate+0x320/0x320
[ 595.902228][ T1129] ? trace_hardirqs_off_caller+0x55/0x230
[ 595.902254][ T1129] do_syscall_64+0xf6/0x7d0
[ 595.902274][ T1129] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 595.902282][ T1129] RIP: 0033:0x441419
[ 595.902295][ T1129] Code: Bad RIP value.
[ 595.902302][ T1129] RSP: 002b:00007ffe2c95c3b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[ 595.902314][ T1129] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
[ 595.902322][ T1129] RDX: 0000000000000000 RSI: 0000000020000180 RDI: ffffffffffffff9c
[ 595.902330][ T1129] RBP: 00000000006cb018 R08: 0000000000000004 R09: 00000000004002c8
[ 595.902337][ T1129] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402190
[ 595.902345][ T1129] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000
[ 595.902377][ T1129]
[ 595.902377][ T1129] Showing all locks held in the system:
[ 595.902390][ T1129] 1 lock held by khungtaskd/1129:
[ 595.902395][ T1129] #0: ffffffff897accc0 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x260
[ 595.902451][ T1129] 1 lock held by in:imklog/6639:
[ 595.902455][ T1129] #0: ffff8880950f6120 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xe3/0x100
[ 595.902486][ T1129] 2 locks held by syz-executor130/7013:
[ 595.902494][ T1129] 1 lock held by syz-executor130/7018:
[ 595.902499][ T1129] #0: ffff888218c5f070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 595.902525][ T1129] 1 lock held by syz-executor130/7019:
[ 595.902529][ T1129] #0: ffff888218c5f070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 595.902555][ T1129] 1 lock held by syz-executor130/7020:
[ 595.902560][ T1129] #0: ffff888218c5f070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 595.902586][ T1129] 1 lock held by syz-executor130/7021:
[ 595.902590][ T1129] #0: ffff888218c5f070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 595.902616][ T1129] 1 lock held by syz-executor130/7022:
[ 595.902620][ T1129] #0: ffff888218c5f070 (&fb_info->lock){+.+.}, at: fb_open+0xd3/0x430
[ 595.902643][ T1129]
[ 595.902648][ T1129] =============================================
[ 595.902648][ T1129]
[ 595.902654][ T1129] NMI backtrace for cpu 0
[ 595.902667][ T1129] CPU: 0 PID: 1129 Comm: khungtaskd Not tainted 5.6.0-rc7-syzkaller #0
[ 595.902674][ T1129] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 595.902678][ T1129] Call Trace:
[ 595.902770][ T1129] dump_stack+0x188/0x20d
[ 595.902793][ T1129] nmi_cpu_backtrace.cold+0x70/0xb1
[ 595.902861][ T1129] ? lapic_can_unplug_cpu.cold+0x3b/0x3b
[ 595.902877][ T1129] nmi_trigger_cpumask_backtrace+0x231/0x27e
[ 595.902943][ T1129] watchdog+0xa8c/0x1010
[ 595.902967][ T1129] ? reset_hung_task_detector+0x30/0x30
[ 595.903006][ T1129] kthread+0x357/0x430
[ 595.903019][ T1129] ? kthread_mod_delayed_work+0x1a0/0x1a0
[ 595.903036][ T1129] ret_from_fork+0x24/0x30
[ 595.903070][ T1129] Sending NMI from CPU 0 to CPUs 1:
[ 595.903854][ C1] NMI backtrace for cpu 1
[ 595.903860][ C1] CPU: 1 PID: 7013 Comm: syz-executor130 Not tainted 5.6.0-rc7-syzkaller #0
[ 595.903866][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 595.903869][ C1] RIP: 0010:write_comp_data+0x1e/0x70
[ 595.903879][ C1] Code: 48 89 11 c3 0f 1f 84 00 00 00 00 00 65 4c 8b 04 25 c0 1e 02 00 65 8b 05 08 f9 8f 7e a9 00 01 1f 00 75 51 41 8b 80 80 13 00 00 <83> f8 03 75 45 49 8b 80 88 13 00 00 45 8b 80 84 13 00 00 4c 8b 08
[ 595.903883][ C1] RSP: 0018:ffffc90001757590 EFLAGS: 00000246
[ 595.903890][ C1] RAX: 0000000000000000 RBX: 0000000000000050 RCX: ffffffff83b77f8a
[ 595.903894][ C1] RDX: 0000000000000036 RSI: 0000000000000050 RDI: 0000000000000004
[ 595.903899][ C1] RBP: 0000000000000036 R08: ffff888096634340 R09: ffffed10431813bc
[ 595.903903][ C1] R10: ffffed10431813bb R11: ffff888218c09ddf R12: ffff8880000a0036
[ 595.903908][ C1] R13: ffff8880000a0000 R14: 0000000000000000 R15: 00000000ee933ac7
[ 595.903913][ C1] FS: 00000000020e9880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[ 595.903917][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 595.903921][ C1] CR2: 0000000020000180 CR3: 000000008ff28000 CR4: 00000000001406e0
[ 595.903926][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 595.903930][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 595.903932][ C1] Call Trace:
[ 595.903936][ C1] vga16fb_fillrect+0x9da/0x1960
[ 595.903938][ C1] ? memcpy+0x35/0x50
[ 595.903941][ C1] bit_clear_margins+0x2d5/0x4a0
[ 595.903944][ C1] ? bit_bmove+0x210/0x210
[ 595.903947][ C1] ? vesafb_probe.cold+0x1162/0x1162
[ 595.903950][ C1] fbcon_clear_margins+0x1de/0x240
[ 595.903953][ C1] fbcon_switch+0xd1b/0x1740
[ 595.903957][ C1] ? fbcon_set_def_font+0x370/0x370
[ 595.903959][ C1] ? fbcon_cursor+0x477/0x650
[ 595.903962][ C1] ? bit_clear+0x4e0/0x4e0
[ 595.903965][ C1] ? is_console_locked+0x5/0x10
[ 595.903969][ C1] ? fbcon_set_origin+0x26/0x50
[ 595.903971][ C1] redraw_screen+0x2a8/0x770
[ 595.903975][ C1] ? vesafb_probe.cold+0x1162/0x1162
[ 595.903978][ C1] ? respond_string+0x290/0x290
[ 595.903981][ C1] ? fbcon_set_palette+0x3b1/0x4a0
[ 595.903984][ C1] fbcon_modechanged+0x5bd/0x780
[ 595.903987][ C1] fbcon_update_vcs+0x3a/0x50
[ 595.903990][ C1] fb_set_var+0xad0/0xd40
[ 595.903992][ C1] ? fb_blank+0x190/0x190
[ 595.903996][ C1] ? preempt_schedule_common+0x5e/0xc0
[ 595.903999][ C1] ? ___preempt_schedule+0x16/0x18
[ 595.904002][ C1] ? lock_acquire+0x197/0x420
[ 595.904005][ C1] ? do_fb_ioctl+0x335/0x7d0
[ 595.904008][ C1] do_fb_ioctl+0x390/0x7d0
[ 595.904010][ C1] ? fb_mmap+0x550/0x550
[ 595.904014][ C1] ? tomoyo_execute_permission+0x470/0x470
[ 595.904017][ C1] ? do_wp_page+0x50b/0x13c0
[ 595.904020][ C1] ? __sanitizer_cov_trace_switch+0x45/0x70
[ 595.904023][ C1] ? do_vfs_ioctl+0x506/0x12c0
[ 595.904026][ C1] ? up_read+0x1ab/0x750
[ 595.904029][ C1] ? mark_held_locks+0x9f/0xe0
[ 595.904032][ C1] fb_ioctl+0xdd/0x130
[ 595.904035][ C1] ? do_fb_ioctl+0x7d0/0x7d0
[ 595.904037][ C1] ksys_ioctl+0x11a/0x180
[ 595.904040][ C1] __x64_sys_ioctl+0x6f/0xb0
[ 595.904044][ C1] ? lockdep_hardirqs_on+0x417/0x5d0
[ 595.904046][ C1] do_syscall_64+0xf6/0x7d0
[ 595.904050][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 595.904053][ C1] RIP: 0033:0x441419
[ 595.904062][ C1] 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
[ 595.904065][ C1] RSP: 002b:00007ffe2c95c3b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 595.904073][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419
[ 595.904078][ C1] RDX: 0000000020000000 RSI: 0000000000004601 RDI: 0000000000000003
[ 595.904082][ C1] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8
[ 595.904086][ C1] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000402190
[ 595.904089][ C1] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000
[ 595.904100][ T1129] Kernel panic - not syncing: hung_task: blocked tasks
[ 595.904111][ T1129] CPU: 0 PID: 1129 Comm: khungtaskd Not tainted 5.6.0-rc7-syzkaller #0
[ 595.904118][ T1129] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 595.904123][ T1129] Call Trace:
[ 595.904137][ T1129] dump_stack+0x188/0x20d
[ 595.904192][ T1129] panic+0x2e3/0x75c
[ 595.904204][ T1129] ? add_taint.cold+0x16/0x16
[ 595.904220][ T1129] ? cpumask_next+0x3c/0x40
[ 595.904232][ T1129] ? printk_safe_flush+0xd9/0x120
[ 595.904243][ T1129] ? watchdog+0xa8c/0x1010
[ 595.904255][ T1129] ? nmi_trigger_cpumask_backtrace+0x214/0x27e
[ 595.904272][ T1129] watchdog+0xa9d/0x1010
[ 595.904291][ T1129] ? reset_hung_task_detector+0x30/0x30
[ 595.904303][ T1129] kthread+0x357/0x430
[ 595.904313][ T1129] ? kthread_mod_delayed_work+0x1a0/0x1a0
[ 595.904325][ T1129] ret_from_fork+0x24/0x30
[ 595.906143][ T1129] Kernel Offset: disabled
[ 597.984574][ T1129] Rebooting in 86400 seconds..