[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 105.380613][ T26] audit: type=1800 audit(1580623290.999:25): pid=9652 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 105.400795][ T26] audit: type=1800 audit(1580623290.999:26): pid=9652 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 105.454987][ T26] audit: type=1800 audit(1580623290.999:27): pid=9652 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[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.218' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 571.015528][ T1134] INFO: task syz-executor174:9814 blocked for more than 143 seconds. [ 571.015551][ T1134] Not tainted 5.5.0-syzkaller #0 [ 571.015557][ T1134] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 571.015565][ T1134] syz-executor174 D28072 9814 9813 0x00004004 [ 571.015591][ T1134] Call Trace: [ 571.015624][ T1134] __schedule+0x934/0x1f90 [ 571.015653][ T1134] ? __sched_text_start+0x8/0x8 [ 571.015669][ T1134] ? lock_downgrade+0x920/0x920 [ 571.015687][ T1134] ? rwlock_bug.part.0+0x90/0x90 [ 571.015716][ T1134] schedule+0xdc/0x2b0 [ 571.015745][ T1134] schedule_preempt_disabled+0x13/0x20 [ 571.015761][ T1134] __mutex_lock+0x7ab/0x13c0 [ 571.015786][ T1134] ? fb_open+0xd7/0x450 [ 571.015811][ T1134] ? mutex_trylock+0x2d0/0x2d0 [ 571.015833][ T1134] ? __kasan_check_write+0x14/0x20 [ 571.015850][ T1134] ? __mutex_unlock_slowpath+0xf0/0x6a0 [ 571.015869][ T1134] ? chrdev_open+0xca/0x6b0 [ 571.015915][ T1134] mutex_lock_nested+0x16/0x20 [ 571.015931][ T1134] ? mutex_lock_nested+0x16/0x20 [ 571.015948][ T1134] fb_open+0xd7/0x450 [ 571.015971][ T1134] ? get_fb_info.part.0+0x80/0x80 [ 571.015986][ T1134] chrdev_open+0x245/0x6b0 [ 571.016009][ T1134] ? cdev_put.part.0+0x50/0x50 [ 571.016034][ T1134] ? security_file_open+0x87/0x300 [ 571.016059][ T1134] do_dentry_open+0x4e6/0x1380 [ 571.016074][ T1134] ? __kasan_check_read+0x11/0x20 [ 571.016092][ T1134] ? cdev_put.part.0+0x50/0x50 [ 571.016118][ T1134] ? chown_common+0x5c0/0x5c0 [ 571.016137][ T1134] ? inode_permission+0xb4/0x520 [ 571.016165][ T1134] vfs_open+0xa0/0xd0 [ 571.016184][ T1134] path_openat+0x12ee/0x3490 [ 571.016227][ T1134] ? path_mountpoint.isra.0+0x370/0x370 [ 571.016240][ T1134] ? __lock_acquire+0x16f2/0x4a00 [ 571.016273][ T1134] ? __alloc_fd+0x487/0x620 [ 571.016300][ T1134] do_filp_open+0x192/0x260 [ 571.016320][ T1134] ? may_open_dev+0x100/0x100 [ 571.016366][ T1134] ? do_raw_spin_unlock+0x181/0x270 [ 571.016388][ T1134] ? _raw_spin_unlock+0x28/0x40 [ 571.016406][ T1134] ? __alloc_fd+0x487/0x620 [ 571.016449][ T1134] do_sys_openat2+0x5eb/0x7e0 [ 571.016475][ T1134] ? file_open_root+0x430/0x430 [ 571.016497][ T1134] ? debug_smp_processor_id+0x33/0x18a [ 571.016520][ T1134] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 571.016548][ T1134] do_sys_open+0xf2/0x180 [ 571.016568][ T1134] ? filp_open+0x80/0x80 [ 571.016593][ T1134] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 571.016612][ T1134] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 571.016630][ T1134] ? do_syscall_64+0x26/0x790 [ 571.016648][ T1134] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 571.016664][ T1134] ? do_syscall_64+0x26/0x790 [ 571.016690][ T1134] __x64_sys_openat+0x9d/0x100 [ 571.016714][ T1134] do_syscall_64+0xfa/0x790 [ 571.016745][ T1134] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 571.016757][ T1134] RIP: 0033:0x441419 [ 571.016848][ T1134] Code: Bad RIP value. [ 571.016857][ T1134] RSP: 002b:00007ffd5ff315c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 571.016872][ T1134] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 [ 571.016881][ T1134] RDX: 0000000000000000 RSI: 0000000020000180 RDI: ffffffffffffff9c [ 571.016891][ T1134] RBP: 00000000006cb018 R08: 0000000000000004 R09: 00000000004002c8 [ 571.016900][ T1134] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402190 [ 571.016909][ T1134] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000 [ 571.016951][ T1134] INFO: task syz-executor174:9815 blocked for more than 143 seconds. [ 571.016960][ T1134] Not tainted 5.5.0-syzkaller #0 [ 571.016966][ T1134] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 571.016973][ T1134] syz-executor174 D28072 9815 9812 0x00004004 [ 571.016995][ T1134] Call Trace: [ 571.017018][ T1134] __schedule+0x934/0x1f90 [ 571.017046][ T1134] ? __sched_text_start+0x8/0x8 [ 571.017060][ T1134] ? lock_downgrade+0x920/0x920 [ 571.017078][ T1134] ? rwlock_bug.part.0+0x90/0x90 [ 571.017107][ T1134] schedule+0xdc/0x2b0 [ 571.017130][ T1134] schedule_preempt_disabled+0x13/0x20 [ 571.017146][ T1134] __mutex_lock+0x7ab/0x13c0 [ 571.017168][ T1134] ? fb_open+0xd7/0x450 [ 571.017194][ T1134] ? mutex_trylock+0x2d0/0x2d0 [ 571.017215][ T1134] ? __kasan_check_write+0x14/0x20 [ 571.017231][ T1134] ? __mutex_unlock_slowpath+0xf0/0x6a0 [ 571.017248][ T1134] ? chrdev_open+0xca/0x6b0 [ 571.017294][ T1134] mutex_lock_nested+0x16/0x20 [ 571.017310][ T1134] ? mutex_lock_nested+0x16/0x20 [ 571.017326][ T1134] fb_open+0xd7/0x450 [ 571.017349][ T1134] ? get_fb_info.part.0+0x80/0x80 [ 571.017365][ T1134] chrdev_open+0x245/0x6b0 [ 571.017388][ T1134] ? cdev_put.part.0+0x50/0x50 [ 571.017413][ T1134] ? security_file_open+0x87/0x300 [ 571.017437][ T1134] do_dentry_open+0x4e6/0x1380 [ 571.017452][ T1134] ? __kasan_check_read+0x11/0x20 [ 571.017470][ T1134] ? cdev_put.part.0+0x50/0x50 [ 571.017496][ T1134] ? chown_common+0x5c0/0x5c0 [ 571.017515][ T1134] ? inode_permission+0xb4/0x520 [ 571.017543][ T1134] vfs_open+0xa0/0xd0 [ 571.017561][ T1134] path_openat+0x12ee/0x3490 [ 571.017604][ T1134] ? path_mountpoint.isra.0+0x370/0x370 [ 571.017617][ T1134] ? __lock_acquire+0x16f2/0x4a00 [ 571.017650][ T1134] ? __alloc_fd+0x487/0x620 [ 571.017677][ T1134] do_filp_open+0x192/0x260 [ 571.017696][ T1134] ? may_open_dev+0x100/0x100 [ 571.017745][ T1134] ? do_raw_spin_unlock+0x181/0x270 [ 571.017767][ T1134] ? _raw_spin_unlock+0x28/0x40 [ 571.017784][ T1134] ? __alloc_fd+0x487/0x620 [ 571.017827][ T1134] do_sys_openat2+0x5eb/0x7e0 [ 571.017853][ T1134] ? file_open_root+0x430/0x430 [ 571.017873][ T1134] ? debug_smp_processor_id+0x33/0x18a [ 571.017894][ T1134] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 571.017923][ T1134] do_sys_open+0xf2/0x180 [ 571.017943][ T1134] ? filp_open+0x80/0x80 [ 571.017966][ T1134] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 571.017984][ T1134] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 571.018002][ T1134] ? do_syscall_64+0x26/0x790 [ 571.018020][ T1134] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 571.018036][ T1134] ? do_syscall_64+0x26/0x790 [ 571.018063][ T1134] __x64_sys_openat+0x9d/0x100 [ 571.018087][ T1134] do_syscall_64+0xfa/0x790 [ 571.018113][ T1134] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 571.018124][ T1134] RIP: 0033:0x441419 [ 571.018139][ T1134] Code: Bad RIP value. [ 571.018148][ T1134] RSP: 002b:00007ffd5ff315c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 571.018161][ T1134] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 [ 571.018171][ T1134] RDX: 0000000000000000 RSI: 0000000020000180 RDI: ffffffffffffff9c [ 571.018180][ T1134] RBP: 00000000006cb018 R08: 0000000000000004 R09: 00000000004002c8 [ 571.018189][ T1134] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402190 [ 571.018198][ T1134] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000 [ 571.018239][ T1134] INFO: task syz-executor174:9816 blocked for more than 143 seconds. [ 571.018248][ T1134] Not tainted 5.5.0-syzkaller #0 [ 571.018254][ T1134] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 571.018260][ T1134] syz-executor174 D28072 9816 9810 0x00000004 [ 571.018280][ T1134] Call Trace: [ 571.018303][ T1134] __schedule+0x934/0x1f90 [ 571.018331][ T1134] ? __sched_text_start+0x8/0x8 [ 571.018344][ T1134] ? lock_downgrade+0x920/0x920 [ 571.018362][ T1134] ? rwlock_bug.part.0+0x90/0x90 [ 571.018391][ T1134] schedule+0xdc/0x2b0 [ 571.018414][ T1134] schedule_preempt_disabled+0x13/0x20 [ 571.018429][ T1134] __mutex_lock+0x7ab/0x13c0 [ 571.018451][ T1134] ? fb_open+0xd7/0x450 [ 571.018477][ T1134] ? mutex_trylock+0x2d0/0x2d0 [ 571.018498][ T1134] ? __kasan_check_write+0x14/0x20 [ 571.018514][ T1134] ? __mutex_unlock_slowpath+0xf0/0x6a0 [ 571.018531][ T1134] ? chrdev_open+0xca/0x6b0 [ 571.018577][ T1134] mutex_lock_nested+0x16/0x20 [ 571.018593][ T1134] ? mutex_lock_nested+0x16/0x20 [ 571.018609][ T1134] fb_open+0xd7/0x450 [ 571.018632][ T1134] ? get_fb_info.part.0+0x80/0x80 [ 571.018647][ T1134] chrdev_open+0x245/0x6b0 [ 571.018671][ T1134] ? cdev_put.part.0+0x50/0x50 [ 571.018695][ T1134] ? security_file_open+0x87/0x300 [ 571.018719][ T1134] do_dentry_open+0x4e6/0x1380 [ 571.018738][ T1134] ? __kasan_check_read+0x11/0x20 [ 571.018757][ T1134] ? cdev_put.part.0+0x50/0x50 [ 571.018783][ T1134] ? chown_common+0x5c0/0x5c0 [ 571.018802][ T1134] ? inode_permission+0xb4/0x520 [ 571.018830][ T1134] vfs_open+0xa0/0xd0 [ 571.018847][ T1134] path_openat+0x12ee/0x3490 [ 571.018891][ T1134] ? path_mountpoint.isra.0+0x370/0x370 [ 571.018904][ T1134] ? __lock_acquire+0x16f2/0x4a00 [ 571.018936][ T1134] ? __alloc_fd+0x487/0x620 [ 571.018963][ T1134] do_filp_open+0x192/0x260 [ 571.018983][ T1134] ? may_open_dev+0x100/0x100 [ 571.019026][ T1134] ? do_raw_spin_unlock+0x181/0x270 [ 571.019047][ T1134] ? _raw_spin_unlock+0x28/0x40 [ 571.019065][ T1134] ? __alloc_fd+0x487/0x620 [ 571.019108][ T1134] do_sys_openat2+0x5eb/0x7e0 [ 571.019133][ T1134] ? file_open_root+0x430/0x430 [ 571.019155][ T1134] ? debug_smp_processor_id+0x33/0x18a [ 571.019176][ T1134] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 571.019205][ T1134] do_sys_open+0xf2/0x180 [ 571.019224][ T1134] ? filp_open+0x80/0x80 [ 571.019247][ T1134] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 571.019266][ T1134] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 571.019284][ T1134] ? do_syscall_64+0x26/0x790 [ 571.019302][ T1134] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 571.019318][ T1134] ? do_syscall_64+0x26/0x790 [ 571.019344][ T1134] __x64_sys_openat+0x9d/0x100 [ 571.019369][ T1134] do_syscall_64+0xfa/0x790 [ 571.019395][ T1134] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 571.019405][ T1134] RIP: 0033:0x441419 [ 571.019421][ T1134] Code: Bad RIP value. [ 571.019429][ T1134] RSP: 002b:00007ffd5ff315c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 571.019443][ T1134] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 [ 571.019453][ T1134] RDX: 0000000000000000 RSI: 0000000020000180 RDI: ffffffffffffff9c [ 571.019462][ T1134] RBP: 00000000006cb018 R08: 0000000000000004 R09: 00000000004002c8 [ 571.019471][ T1134] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402190 [ 571.019480][ T1134] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000 [ 571.019522][ T1134] INFO: task syz-executor174:9817 blocked for more than 143 seconds. [ 571.019530][ T1134] Not tainted 5.5.0-syzkaller #0 [ 571.019536][ T1134] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 571.019542][ T1134] syz-executor174 D27800 9817 9808 0x00004004 [ 571.019562][ T1134] Call Trace: [ 571.019585][ T1134] __schedule+0x934/0x1f90 [ 571.019613][ T1134] ? __sched_text_start+0x8/0x8 [ 571.019626][ T1134] ? lock_downgrade+0x920/0x920 [ 571.019644][ T1134] ? rwlock_bug.part.0+0x90/0x90 [ 571.019673][ T1134] schedule+0xdc/0x2b0 [ 571.019695][ T1134] schedule_preempt_disabled+0x13/0x20 [ 571.019711][ T1134] __mutex_lock+0x7ab/0x13c0 [ 571.019738][ T1134] ? fb_open+0xd7/0x450 [ 571.019763][ T1134] ? mutex_trylock+0x2d0/0x2d0 [ 571.019784][ T1134] ? __kasan_check_write+0x14/0x20 [ 571.019801][ T1134] ? __mutex_unlock_slowpath+0xf0/0x6a0 [ 571.019817][ T1134] ? chrdev_open+0xca/0x6b0 [ 571.019863][ T1134] mutex_lock_nested+0x16/0x20 [ 571.019880][ T1134] ? mutex_lock_nested+0x16/0x20 [ 571.019896][ T1134] fb_open+0xd7/0x450 [ 571.019919][ T1134] ? get_fb_info.part.0+0x80/0x80 [ 571.019934][ T1134] chrdev_open+0x245/0x6b0 [ 571.019958][ T1134] ? cdev_put.part.0+0x50/0x50 [ 571.019995][ T1134] ? security_file_open+0x87/0x300 [ 571.020019][ T1134] do_dentry_open+0x4e6/0x1380 [ 571.020034][ T1134] ? __kasan_check_read+0x11/0x20 [ 571.020053][ T1134] ? cdev_put.part.0+0x50/0x50 [ 571.020078][ T1134] ? chown_common+0x5c0/0x5c0 [ 571.020097][ T1134] ? inode_permission+0xb4/0x520 [ 571.020125][ T1134] vfs_open+0xa0/0xd0 [ 571.020148][ T1134] path_openat+0x12ee/0x3490 [ 571.020192][ T1134] ? path_mountpoint.isra.0+0x370/0x370 [ 571.020205][ T1134] ? __lock_acquire+0x16f2/0x4a00 [ 571.020236][ T1134] ? __alloc_fd+0x487/0x620 [ 571.020263][ T1134] do_filp_open+0x192/0x260 [ 571.020283][ T1134] ? may_open_dev+0x100/0x100 [ 571.020325][ T1134] ? do_raw_spin_unlock+0x181/0x270 [ 571.020347][ T1134] ? _raw_spin_unlock+0x28/0x40 [ 571.020365][ T1134] ? __alloc_fd+0x487/0x620 [ 571.020407][ T1134] do_sys_openat2+0x5eb/0x7e0 [ 571.020433][ T1134] ? file_open_root+0x430/0x430 [ 571.020454][ T1134] ? debug_smp_processor_id+0x33/0x18a [ 571.020475][ T1134] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 571.020503][ T1134] do_sys_open+0xf2/0x180 [ 571.020523][ T1134] ? filp_open+0x80/0x80 [ 571.020546][ T1134] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 571.020565][ T1134] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 571.020583][ T1134] ? do_syscall_64+0x26/0x790 [ 571.020601][ T1134] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 571.020617][ T1134] ? do_syscall_64+0x26/0x790 [ 571.020643][ T1134] __x64_sys_openat+0x9d/0x100 [ 571.020667][ T1134] do_syscall_64+0xfa/0x790 [ 571.020693][ T1134] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 571.020704][ T1134] RIP: 0033:0x441419 [ 571.020719][ T1134] Code: Bad RIP value. [ 571.020734][ T1134] RSP: 002b:00007ffd5ff315c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 571.020748][ T1134] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 [ 571.020758][ T1134] RDX: 0000000000000000 RSI: 0000000020000180 RDI: ffffffffffffff9c [ 571.020767][ T1134] RBP: 00000000006cb018 R08: 0000000000000004 R09: 00000000004002c8 [ 571.020776][ T1134] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402190 [ 571.020785][ T1134] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000 [ 571.020827][ T1134] INFO: task syz-executor174:9818 blocked for more than 143 seconds. [ 571.020834][ T1134] Not tainted 5.5.0-syzkaller #0 [ 571.020840][ T1134] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 571.020846][ T1134] syz-executor174 D28072 9818 9811 0x00004004 [ 571.020868][ T1134] Call Trace: [ 571.020888][ T1134] __schedule+0x934/0x1f90 [ 571.020917][ T1134] ? __sched_text_start+0x8/0x8 [ 571.020931][ T1134] ? lock_downgrade+0x920/0x920 [ 571.020949][ T1134] ? rwlock_bug.part.0+0x90/0x90 [ 571.020977][ T1134] schedule+0xdc/0x2b0 [ 571.021000][ T1134] schedule_preempt_disabled+0x13/0x20 [ 571.021016][ T1134] __mutex_lock+0x7ab/0x13c0 [ 571.021038][ T1134] ? fb_open+0xd7/0x450 [ 571.021064][ T1134] ? mutex_trylock+0x2d0/0x2d0 [ 571.021085][ T1134] ? __kasan_check_write+0x14/0x20 [ 571.021101][ T1134] ? __mutex_unlock_slowpath+0xf0/0x6a0 [ 571.021118][ T1134] ? chrdev_open+0xca/0x6b0 [ 571.021164][ T1134] mutex_lock_nested+0x16/0x20 [ 571.021180][ T1134] ? mutex_lock_nested+0x16/0x20 [ 571.021197][ T1134] fb_open+0xd7/0x450 [ 571.021220][ T1134] ? get_fb_info.part.0+0x80/0x80 [ 571.021348][ T1134] chrdev_open+0x245/0x6b0 [ 571.021385][ T1134] ? cdev_put.part.0+0x50/0x50 [ 571.021411][ T1134] ? security_file_open+0x87/0x300 [ 571.021435][ T1134] do_dentry_open+0x4e6/0x1380 [ 571.021450][ T1134] ? __kasan_check_read+0x11/0x20 [ 571.021468][ T1134] ? cdev_put.part.0+0x50/0x50 [ 571.021492][ T1134] ? chown_common+0x5c0/0x5c0 [ 571.021511][ T1134] ? inode_permission+0xb4/0x520 [ 571.021539][ T1134] vfs_open+0xa0/0xd0 [ 571.021556][ T1134] path_openat+0x12ee/0x3490 [ 571.021599][ T1134] ? path_mountpoint.isra.0+0x370/0x370 [ 571.021612][ T1134] ? __lock_acquire+0x16f2/0x4a00 [ 571.021644][ T1134] ? __alloc_fd+0x487/0x620 [ 571.021671][ T1134] do_filp_open+0x192/0x260 [ 571.021690][ T1134] ? may_open_dev+0x100/0x100 [ 571.021732][ T1134] ? do_raw_spin_unlock+0x181/0x270 [ 571.021754][ T1134] ? _raw_spin_unlock+0x28/0x40 [ 571.021771][ T1134] ? __alloc_fd+0x487/0x620 [ 571.021813][ T1134] do_sys_openat2+0x5eb/0x7e0 [ 571.021838][ T1134] ? file_open_root+0x430/0x430 [ 571.021859][ T1134] ? debug_smp_processor_id+0x33/0x18a [ 571.021897][ T1134] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 571.021926][ T1134] do_sys_open+0xf2/0x180 [ 571.021945][ T1134] ? filp_open+0x80/0x80 [ 571.021968][ T1134] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 571.021986][ T1134] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 571.022004][ T1134] ? do_syscall_64+0x26/0x790 [ 571.022021][ T1134] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 571.022037][ T1134] ? do_syscall_64+0x26/0x790 [ 571.022062][ T1134] __x64_sys_openat+0x9d/0x100 [ 571.022085][ T1134] do_syscall_64+0xfa/0x790 [ 571.022111][ T1134] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 571.022123][ T1134] RIP: 0033:0x441419 [ 571.022145][ T1134] Code: Bad RIP value. [ 571.022153][ T1134] RSP: 002b:00007ffd5ff315c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 571.022169][ T1134] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 [ 571.022178][ T1134] RDX: 0000000000000000 RSI: 0000000020000180 RDI: ffffffffffffff9c [ 571.022188][ T1134] RBP: 00000000006cb018 R08: 0000000000000004 R09: 00000000004002c8 [ 571.022197][ T1134] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402190 [ 571.022206][ T1134] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000 [ 571.022244][ T1134] [ 571.022244][ T1134] Showing all locks held in the system: [ 571.022261][ T1134] 1 lock held by khungtaskd/1134: [ 571.022266][ T1134] #0: ffffffff89baa840 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 [ 571.022327][ T1134] 1 lock held by rsyslogd/9690: [ 571.022332][ T1134] #0: ffff88809e408620 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 571.022366][ T1134] 2 locks held by getty/9780: [ 571.022371][ T1134] #0: ffff8880a7658090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 571.022399][ T1134] #1: ffffc900017bb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 571.022434][ T1134] 2 locks held by getty/9781: [ 571.022439][ T1134] #0: ffff88809d514090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 571.022468][ T1134] #1: ffffc900017db2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 571.022501][ T1134] 2 locks held by getty/9782: [ 571.022506][ T1134] #0: ffff88809f386090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 571.022533][ T1134] #1: ffffc900017cb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 571.022567][ T1134] 2 locks held by getty/9783: [ 571.022572][ T1134] #0: ffff8880a89cb090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 571.022600][ T1134] #1: ffffc900017eb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 571.022634][ T1134] 2 locks held by getty/9784: [ 571.022639][ T1134] #0: ffff8880a91cb090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 571.022667][ T1134] #1: ffffc9000181b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 571.022701][ T1134] 2 locks held by getty/9785: [ 571.022706][ T1134] #0: ffff88809fed7090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 571.022734][ T1134] #1: ffffc9000182b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 571.022767][ T1134] 2 locks held by getty/9786: [ 571.022772][ T1134] #0: ffff88809366a090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 571.022799][ T1134] #1: ffffc9000174b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 571.022835][ T1134] 2 locks held by syz-executor174/9809: [ 571.022847][ T1134] 1 lock held by syz-executor174/9814: [ 571.022852][ T1134] #0: ffff8880a3feb070 (&fb_info->lock){+.+.}, at: fb_open+0xd7/0x450 [ 571.022893][ T1134] 1 lock held by syz-executor174/9815: [ 571.022899][ T1134] #0: ffff8880a3feb070 (&fb_info->lock){+.+.}, at: fb_open+0xd7/0x450 [ 571.022931][ T1134] 1 lock held by syz-executor174/9816: [ 571.022936][ T1134] #0: ffff8880a3feb070 (&fb_info->lock){+.+.}, at: fb_open+0xd7/0x450 [ 571.022968][ T1134] 1 lock held by syz-executor174/9817: [ 571.022973][ T1134] #0: ffff8880a3feb070 (&fb_info->lock){+.+.}, at: fb_open+0xd7/0x450 [ 571.023004][ T1134] 1 lock held by syz-executor174/9818: [ 571.023009][ T1134] #0: ffff8880a3feb070 (&fb_info->lock){+.+.}, at: fb_open+0xd7/0x450 [ 571.023037][ T1134] [ 571.023043][ T1134] ============================================= [ 571.023043][ T1134] [ 571.023050][ T1134] NMI backtrace for cpu 0 [ 571.023066][ T1134] CPU: 0 PID: 1134 Comm: khungtaskd Not tainted 5.5.0-syzkaller #0 [ 571.023075][ T1134] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 571.023080][ T1134] Call Trace: [ 571.023100][ T1134] dump_stack+0x197/0x210 [ 571.023125][ T1134] nmi_cpu_backtrace.cold+0x70/0xb2 [ 571.023141][ T1134] ? vprintk_func+0x86/0x189 [ 571.023166][ T1134] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 571.023183][ T1134] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 571.023209][ T1134] arch_trigger_cpumask_backtrace+0x14/0x20 [ 571.023225][ T1134] watchdog+0xb11/0x10c0 [ 571.023262][ T1134] kthread+0x361/0x430 [ 571.023279][ T1134] ? reset_hung_task_detector+0x30/0x30 [ 571.023297][ T1134] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 571.023319][ T1134] ret_from_fork+0x24/0x30 [ 571.023357][ T1134] Sending NMI from CPU 0 to CPUs 1: [ 571.024038][ C1] NMI backtrace for cpu 1 [ 571.024045][ C1] CPU: 1 PID: 9809 Comm: syz-executor174 Not tainted 5.5.0-syzkaller #0 [ 571.024052][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 571.024056][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x50 [ 571.024069][ C1] Code: 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 55 48 89 e5 65 48 8b 04 25 c0 1e 02 00 <65> 8b 15 34 e9 8c 7e 81 e2 00 01 1f 00 48 8b 75 08 75 2b 8b 90 80 [ 571.024073][ C1] RSP: 0018:ffffc9000206f528 EFLAGS: 00000216 [ 571.024082][ C1] RAX: ffff8880982645c0 RBX: 0000000000000050 RCX: ffffffff83c93040 [ 571.024087][ C1] RDX: 000000000000003e RSI: 0000000000000050 RDI: 0000000000000004 [ 571.024093][ C1] RBP: ffffc9000206f528 R08: ffff8880982645c0 R09: ffffed101488421c [ 571.024098][ C1] R10: ffffed101488421b R11: ffff8880a44210df R12: 000000000000003e [ 571.024104][ C1] R13: ffff8880000a003e R14: ffff8880000a0000 R15: 0000000000000000 [ 571.024109][ C1] FS: 000000000181a880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 571.024114][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 571.024119][ C1] CR2: 0000000020000180 CR3: 000000009e8a1000 CR4: 00000000001406e0 [ 571.024125][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 571.024130][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 571.024133][ C1] Call Trace: [ 571.024137][ C1] vga16fb_fillrect+0xa0a/0x19b0 [ 571.024140][ C1] bit_clear_margins+0x30b/0x530 [ 571.024144][ C1] ? bit_bmove+0x270/0x270 [ 571.024148][ C1] ? vesafb_probe.cold+0x1279/0x1279 [ 571.024151][ C1] fbcon_clear_margins+0x1e9/0x250 [ 571.024155][ C1] fbcon_switch+0xd7f/0x17f0 [ 571.024159][ C1] ? fbcon_set_def_font+0x360/0x360 [ 571.024162][ C1] ? fbcon_cursor+0x48c/0x660 [ 571.024167][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 571.024171][ C1] ? fbcon_set_origin+0x2b/0x50 [ 571.024174][ C1] ? fbcon_scrolldelta+0x1220/0x1220 [ 571.024179][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 571.024182][ C1] redraw_screen+0x2b6/0x7d0 [ 571.024186][ C1] ? vesafb_probe.cold+0x1279/0x1279 [ 571.024190][ C1] ? respond_string+0x2c0/0x2c0 [ 571.024193][ C1] ? fbcon_set_palette+0x3c4/0x4a0 [ 571.024197][ C1] fbcon_modechanged+0x5c3/0x790 [ 571.024200][ C1] fbcon_update_vcs+0x42/0x50 [ 571.024204][ C1] fb_set_var+0xb32/0xdd0 [ 571.024207][ C1] ? fb_blank+0x1a0/0x1a0 [ 571.024210][ C1] ? lock_acquire+0x190/0x410 [ 571.024214][ C1] ? __mutex_lock+0x458/0x13c0 [ 571.024217][ C1] ? down+0x50/0x90 [ 571.024220][ C1] ? do_fb_ioctl+0x335/0x7d0 [ 571.024224][ C1] do_fb_ioctl+0x390/0x7d0 [ 571.024227][ C1] ? fb_mmap+0x560/0x560 [ 571.024230][ C1] ? do_wp_page+0x54b/0x1540 [ 571.024235][ C1] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 571.024239][ C1] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 571.024243][ C1] ? do_vfs_ioctl+0x11b/0x1350 [ 571.024247][ C1] ? __kasan_check_write+0x14/0x20 [ 571.024250][ C1] ? up_read+0x1cd/0x810 [ 571.024253][ C1] fb_ioctl+0xe6/0x130 [ 571.024256][ C1] ? do_fb_ioctl+0x7d0/0x7d0 [ 571.024260][ C1] ksys_ioctl+0x123/0x180 [ 571.024263][ C1] __x64_sys_ioctl+0x73/0xb0 [ 571.024266][ C1] do_syscall_64+0xfa/0x790 [ 571.024271][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 571.024274][ C1] RIP: 0033:0x441419 [ 571.024287][ 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 [ 571.024291][ C1] RSP: 002b:00007ffd5ff315c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 571.024306][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441419 [ 571.024311][ C1] RDX: 0000000020000000 RSI: 0000000000004601 RDI: 0000000000000003 [ 571.024317][ C1] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 571.024322][ C1] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000402190 [ 571.024328][ C1] R13: 0000000000402220 R14: 0000000000000000 R15: 0000000000000000 [ 571.024376][ T1134] Kernel panic - not syncing: hung_task: blocked tasks [ 571.024389][ T1134] CPU: 0 PID: 1134 Comm: khungtaskd Not tainted 5.5.0-syzkaller #0 [ 571.024396][ T1134] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 571.024400][ T1134] Call Trace: [ 571.024415][ T1134] dump_stack+0x197/0x210 [ 571.024437][ T1134] panic+0x2e3/0x75c [ 571.024453][ T1134] ? add_taint.cold+0x16/0x16 [ 571.024472][ T1134] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 571.024490][ T1134] ? printk_safe_flush+0xf2/0x140 [ 571.024506][ T1134] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 571.024525][ T1134] ? nmi_trigger_cpumask_backtrace+0x224/0x28b [ 571.024541][ T1134] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 571.024567][ T1134] watchdog+0xb22/0x10c0 [ 571.024604][ T1134] kthread+0x361/0x430 [ 571.024621][ T1134] ? reset_hung_task_detector+0x30/0x30 [ 571.024638][ T1134] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 571.024656][ T1134] ret_from_fork+0x24/0x30 [ 571.026398][ T1134] Kernel Offset: disabled [ 573.498445][ T1134] Rebooting in 86400 seconds..