[ 94.141880][ T9870] cat (9870) used greatest stack depth: 22472 bytes left [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 94.930386][ T27] kauditd_printk_skb: 3 callbacks suppressed [ 94.930398][ T27] audit: type=1800 audit(1581494063.737:29): pid=9801 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 94.957232][ T27] audit: type=1800 audit(1581494063.737:30): pid=9801 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.3' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 723.315575][ T1123] INFO: task syz-executor236:9962 blocked for more than 143 seconds. [ 723.324011][ T1123] Not tainted 5.6.0-rc1-syzkaller #0 [ 723.330826][ T1123] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 723.339771][ T1123] syz-executor236 D28072 9962 9957 0x00004004 [ 723.346376][ T1123] Call Trace: [ 723.349818][ T1123] __schedule+0x934/0x1f90 [ 723.354529][ T1123] ? __sched_text_start+0x8/0x8 [ 723.359716][ T1123] ? lock_downgrade+0x920/0x920 [ 723.364594][ T1123] ? rwlock_bug.part.0+0x90/0x90 [ 723.369937][ T1123] schedule+0xdc/0x2b0 [ 723.374064][ T1123] schedule_preempt_disabled+0x13/0x20 [ 723.379831][ T1123] __mutex_lock+0x7ab/0x13c0 [ 723.384652][ T1123] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 723.391469][ T1123] ? mutex_trylock+0x2d0/0x2d0 [ 723.396568][ T1123] ? _raw_spin_unlock_irq+0x59/0x80 [ 723.401813][ T1123] ? mark_held_locks+0xf0/0xf0 [ 723.406856][ T1123] mutex_lock_nested+0x16/0x20 [ 723.411642][ T1123] ? mutex_lock_nested+0x16/0x20 [ 723.417721][ T1123] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 723.424351][ T1123] hashlimit_mt_check_v1+0x325/0x3ab [ 723.430082][ T1123] ? __mutex_lock+0x458/0x13c0 [ 723.434997][ T1123] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 723.440760][ T1123] ? lock_downgrade+0x920/0x920 [ 723.445896][ T1123] ? mutex_trylock+0x2d0/0x2d0 [ 723.451165][ T1123] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 723.457563][ T1123] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 723.463154][ T1123] xt_check_match+0x280/0x690 [ 723.468116][ T1123] ? xt_check_target+0x690/0x690 [ 723.473166][ T1123] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 723.479859][ T1123] ? mutex_unlock+0xd/0x10 [ 723.484342][ T1123] ? xt_find_match+0x73/0x280 [ 723.489276][ T1123] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 723.496005][ T1123] find_check_entry.isra.0+0x389/0x9d0 [ 723.501532][ T1123] ? __do_replace+0x950/0x950 [ 723.506522][ T1123] ? lockdep_hardirqs_on+0x421/0x5e0 [ 723.512064][ T1123] ? trace_hardirqs_on+0x67/0x240 [ 723.517384][ T1123] ? kvfree+0x4a/0x60 [ 723.521501][ T1123] translate_table+0xd15/0x1860 [ 723.526669][ T1123] ? compat_do_ip6t_get_ctl+0x9a0/0x9a0 [ 723.532243][ T1123] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 723.538812][ T1123] ? _copy_from_user+0x12c/0x1a0 [ 723.543789][ T1123] do_ip6t_set_ctl+0x2fe/0x4c8 [ 723.549929][ T1123] ? compat_do_ip6t_set_ctl+0x170/0x170 [ 723.555708][ T1123] ? mutex_unlock+0xd/0x10 [ 723.560404][ T1123] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 723.566647][ T1123] nf_setsockopt+0x77/0xd0 [ 723.571310][ T1123] ipv6_setsockopt+0x147/0x180 [ 723.576352][ T1123] tcp_setsockopt+0x8f/0xe0 [ 723.580987][ T1123] sock_common_setsockopt+0x94/0xd0 [ 723.587687][ T1123] __sys_setsockopt+0x261/0x4c0 [ 723.592763][ T1123] ? sock_create_kern+0x50/0x50 [ 723.598019][ T1123] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 723.604008][ T1123] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 723.610159][ T1123] ? do_syscall_64+0x26/0x790 [ 723.614859][ T1123] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 723.621331][ T1123] ? do_syscall_64+0x26/0x790 [ 723.626214][ T1123] __x64_sys_setsockopt+0xbe/0x150 [ 723.631360][ T1123] do_syscall_64+0xfa/0x790 [ 723.636425][ T1123] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 723.642348][ T1123] RIP: 0033:0x442259 [ 723.646552][ T1123] Code: 2e 0a 00 00 00 00 00 00 00 43 6c 65 61 6e 20 73 68 75 74 64 6f 77 6e 20 63 6f 6d 70 6c 65 74 65 64 2c 20 62 79 65 0a 00 00 72 <73> 79 73 6c 6f 67 64 3a 20 45 6e 64 20 6f 66 20 63 6f 6e 66 69 67 [ 723.666973][ T1123] RSP: 002b:00007ffebae0c1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 723.677874][ T1123] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442259 [ 723.686247][ T1123] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 [ 723.694379][ T1123] RBP: 00000000006cc018 R08: 0000000000000380 R09: 00000000004002c8 [ 723.702805][ T1123] R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000402fd0 [ 723.711017][ T1123] R13: 0000000000403060 R14: 0000000000000000 R15: 0000000000000000 [ 723.719648][ T1123] INFO: task syz-executor236:9963 blocked for more than 143 seconds. [ 723.728896][ T1123] Not tainted 5.6.0-rc1-syzkaller #0 [ 723.735181][ T1123] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 723.744248][ T1123] syz-executor236 D28072 9963 9959 0x00004004 [ 723.751206][ T1123] Call Trace: [ 723.754639][ T1123] __schedule+0x934/0x1f90 [ 723.759599][ T1123] ? __sched_text_start+0x8/0x8 [ 723.764469][ T1123] ? lock_downgrade+0x920/0x920 [ 723.769817][ T1123] ? rwlock_bug.part.0+0x90/0x90 [ 723.775656][ T1123] schedule+0xdc/0x2b0 [ 723.780156][ T1123] schedule_preempt_disabled+0x13/0x20 [ 723.785927][ T1123] __mutex_lock+0x7ab/0x13c0 [ 723.790896][ T1123] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 723.797931][ T1123] ? mutex_trylock+0x2d0/0x2d0 [ 723.802743][ T1123] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 723.810076][ T1123] ? try_to_wake_up+0xf3/0x1a80 [ 723.814961][ T1123] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 723.821271][ T1123] ? lockdep_hardirqs_on+0x421/0x5e0 [ 723.826881][ T1123] mutex_lock_nested+0x16/0x20 [ 723.831691][ T1123] ? mutex_lock_nested+0x16/0x20 [ 723.836880][ T1123] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 723.843537][ T1123] hashlimit_mt_check_v1+0x325/0x3ab [ 723.849280][ T1123] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 723.854955][ T1123] ? __kasan_check_write+0x14/0x20 [ 723.860705][ T1123] ? wake_up_q+0xc6/0x140 [ 723.865057][ T1123] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 723.870765][ T1123] xt_check_match+0x280/0x690 [ 723.875946][ T1123] ? xt_check_target+0x690/0x690 [ 723.880939][ T1123] ? xt_find_match+0x14f/0x280 [ 723.886272][ T1123] ? mutex_unlock+0xd/0x10 [ 723.891280][ T1123] ? xt_find_match+0x73/0x280 [ 723.896397][ T1123] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 723.902930][ T1123] find_check_entry.isra.0+0x389/0x9d0 [ 723.908812][ T1123] ? __do_replace+0x950/0x950 [ 723.913713][ T1123] ? lockdep_hardirqs_on+0x421/0x5e0 [ 723.919394][ T1123] ? trace_hardirqs_on+0x67/0x240 [ 723.924829][ T1123] ? kvfree+0x4a/0x60 [ 723.929087][ T1123] translate_table+0xd15/0x1860 [ 723.934362][ T1123] ? compat_do_ip6t_get_ctl+0x9a0/0x9a0 [ 723.941161][ T1123] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 723.947876][ T1123] ? _copy_from_user+0x12c/0x1a0 [ 723.952914][ T1123] do_ip6t_set_ctl+0x2fe/0x4c8 [ 723.958176][ T1123] ? compat_do_ip6t_set_ctl+0x170/0x170 [ 723.963997][ T1123] ? mutex_unlock+0xd/0x10 [ 723.968674][ T1123] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 723.975107][ T1123] nf_setsockopt+0x77/0xd0 [ 723.980222][ T1123] ipv6_setsockopt+0x147/0x180 [ 723.985781][ T1123] tcp_setsockopt+0x8f/0xe0 [ 723.990496][ T1123] sock_common_setsockopt+0x94/0xd0 [ 723.996248][ T1123] __sys_setsockopt+0x261/0x4c0 [ 724.001395][ T1123] ? sock_create_kern+0x50/0x50 [ 724.007009][ T1123] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 724.012604][ T1123] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 724.018610][ T1123] ? do_syscall_64+0x26/0x790 [ 724.023308][ T1123] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 724.030018][ T1123] ? do_syscall_64+0x26/0x790 [ 724.034979][ T1123] __x64_sys_setsockopt+0xbe/0x150 [ 724.040589][ T1123] do_syscall_64+0xfa/0x790 [ 724.045736][ T1123] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 724.051817][ T1123] RIP: 0033:0x442259 [ 724.055939][ T1123] Code: 2e 0a 00 00 00 00 00 00 00 43 6c 65 61 6e 20 73 68 75 74 64 6f 77 6e 20 63 6f 6d 70 6c 65 74 65 64 2c 20 62 79 65 0a 00 00 72 <73> 79 73 6c 6f 67 64 3a 20 45 6e 64 20 6f 66 20 63 6f 6e 66 69 67 [ 724.078799][ T1123] RSP: 002b:00007ffebae0c1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 724.087761][ T1123] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442259 [ 724.096389][ T1123] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 [ 724.105221][ T1123] RBP: 00000000006cc018 R08: 0000000000000380 R09: 00000000004002c8 [ 724.114561][ T1123] R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000402fd0 [ 724.123034][ T1123] R13: 0000000000403060 R14: 0000000000000000 R15: 0000000000000000 [ 724.131430][ T1123] INFO: task syz-executor236:9964 blocked for more than 144 seconds. [ 724.140275][ T1123] Not tainted 5.6.0-rc1-syzkaller #0 [ 724.146841][ T1123] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 724.156633][ T1123] syz-executor236 D27776 9964 9955 0x00004004 [ 724.163461][ T1123] Call Trace: [ 724.167189][ T1123] __schedule+0x934/0x1f90 [ 724.172178][ T1123] ? __sched_text_start+0x8/0x8 [ 724.177277][ T1123] ? lock_downgrade+0x920/0x920 [ 724.182891][ T1123] ? rwlock_bug.part.0+0x90/0x90 [ 724.188393][ T1123] schedule+0xdc/0x2b0 [ 724.192739][ T1123] schedule_preempt_disabled+0x13/0x20 [ 724.200343][ T1123] __mutex_lock+0x7ab/0x13c0 [ 724.205264][ T1123] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 724.213488][ T1123] ? mutex_trylock+0x2d0/0x2d0 [ 724.218511][ T1123] ? mark_held_locks+0xf0/0xf0 [ 724.223732][ T1123] ? pcpu_next_md_free_region+0x176/0x350 [ 724.229825][ T1123] mutex_lock_nested+0x16/0x20 [ 724.234806][ T1123] ? mutex_lock_nested+0x16/0x20 [ 724.240248][ T1123] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 724.247218][ T1123] hashlimit_mt_check_v1+0x325/0x3ab [ 724.252522][ T1123] ? __mutex_lock+0x458/0x13c0 [ 724.258378][ T1123] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 724.263855][ T1123] ? lock_downgrade+0x920/0x920 [ 724.269361][ T1123] ? mutex_trylock+0x2d0/0x2d0 [ 724.274420][ T1123] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 724.280936][ T1123] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 724.287198][ T1123] xt_check_match+0x280/0x690 [ 724.292036][ T1123] ? xt_check_target+0x690/0x690 [ 724.297495][ T1123] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 724.304244][ T1123] ? mutex_unlock+0xd/0x10 [ 724.309420][ T1123] ? xt_find_match+0x73/0x280 [ 724.314586][ T1123] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 724.321286][ T1123] find_check_entry.isra.0+0x389/0x9d0 [ 724.327811][ T1123] ? __do_replace+0x950/0x950 [ 724.333014][ T1123] ? lockdep_hardirqs_on+0x421/0x5e0 [ 724.340480][ T1123] ? trace_hardirqs_on+0x67/0x240 [ 724.346516][ T1123] ? kvfree+0x4a/0x60 [ 724.351025][ T1123] translate_table+0xd15/0x1860 [ 724.356268][ T1123] ? compat_do_ip6t_get_ctl+0x9a0/0x9a0 [ 724.367383][ T1123] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 724.374197][ T1123] ? _copy_from_user+0x12c/0x1a0 [ 724.379949][ T1123] do_ip6t_set_ctl+0x2fe/0x4c8 [ 724.384946][ T1123] ? compat_do_ip6t_set_ctl+0x170/0x170 [ 724.391127][ T1123] ? mutex_unlock+0xd/0x10 [ 724.396235][ T1123] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 724.402986][ T1123] nf_setsockopt+0x77/0xd0 [ 724.407761][ T1123] ipv6_setsockopt+0x147/0x180 [ 724.412722][ T1123] tcp_setsockopt+0x8f/0xe0 [ 724.417647][ T1123] sock_common_setsockopt+0x94/0xd0 [ 724.423065][ T1123] __sys_setsockopt+0x261/0x4c0 [ 724.428568][ T1123] ? sock_create_kern+0x50/0x50 [ 724.433448][ T1123] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 724.439493][ T1123] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 724.445508][ T1123] ? do_syscall_64+0x26/0x790 [ 724.445537][ T1123] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 724.445552][ T1123] ? do_syscall_64+0x26/0x790 [ 724.461860][ T1123] __x64_sys_setsockopt+0xbe/0x150 [ 724.468522][ T1123] do_syscall_64+0xfa/0x790 [ 724.473653][ T1123] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 724.480004][ T1123] RIP: 0033:0x442259 [ 724.486544][ T1123] Code: 2e 0a 00 00 00 00 00 00 00 43 6c 65 61 6e 20 73 68 75 74 64 6f 77 6e 20 63 6f 6d 70 6c 65 74 65 64 2c 20 62 79 65 0a 00 00 72 <73> 79 73 6c 6f 67 64 3a 20 45 6e 64 20 6f 66 20 63 6f 6e 66 69 67 [ 724.507941][ T1123] RSP: 002b:00007ffebae0c1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 724.516849][ T1123] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442259 [ 724.525167][ T1123] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 [ 724.533515][ T1123] RBP: 00000000006cc018 R08: 0000000000000380 R09: 00000000004002c8 [ 724.542096][ T1123] R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000402fd0 [ 724.551073][ T1123] R13: 0000000000403060 R14: 0000000000000000 R15: 0000000000000000 [ 724.560460][ T1123] INFO: task syz-executor236:9965 blocked for more than 144 seconds. [ 724.569192][ T1123] Not tainted 5.6.0-rc1-syzkaller #0 [ 724.576111][ T1123] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 724.585201][ T1123] syz-executor236 D28072 9965 9958 0x00004004 [ 724.592100][ T1123] Call Trace: [ 724.597229][ T1123] __schedule+0x934/0x1f90 [ 724.601831][ T1123] ? __sched_text_start+0x8/0x8 [ 724.607233][ T1123] ? lock_downgrade+0x920/0x920 [ 724.612335][ T1123] ? rwlock_bug.part.0+0x90/0x90 [ 724.618403][ T1123] schedule+0xdc/0x2b0 [ 724.622687][ T1123] schedule_preempt_disabled+0x13/0x20 [ 724.628666][ T1123] __mutex_lock+0x7ab/0x13c0 [ 724.633546][ T1123] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 724.640419][ T1123] ? mutex_trylock+0x2d0/0x2d0 [ 724.645581][ T1123] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 724.651811][ T1123] ? try_to_wake_up+0xf3/0x1a80 [ 724.657091][ T1123] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 724.663552][ T1123] ? lockdep_hardirqs_on+0x421/0x5e0 [ 724.669370][ T1123] mutex_lock_nested+0x16/0x20 [ 724.674361][ T1123] ? mutex_lock_nested+0x16/0x20 [ 724.680061][ T1123] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 724.686662][ T1123] hashlimit_mt_check_v1+0x325/0x3ab [ 724.692205][ T1123] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 724.698465][ T1123] ? __kasan_check_write+0x14/0x20 [ 724.703596][ T1123] ? wake_up_q+0xc6/0x140 [ 724.708431][ T1123] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 724.713919][ T1123] xt_check_match+0x280/0x690 [ 724.719371][ T1123] ? xt_check_target+0x690/0x690 [ 724.724509][ T1123] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 724.732281][ T1123] ? mutex_unlock+0xd/0x10 [ 724.737403][ T1123] ? xt_find_match+0x73/0x280 [ 724.742217][ T1123] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 724.749272][ T1123] find_check_entry.isra.0+0x389/0x9d0 [ 724.755838][ T1123] ? __do_replace+0x950/0x950 [ 724.760790][ T1123] ? lockdep_hardirqs_on+0x421/0x5e0 [ 724.766510][ T1123] ? trace_hardirqs_on+0x67/0x240 [ 724.772007][ T1123] ? kvfree+0x4a/0x60 [ 724.776514][ T1123] translate_table+0xd15/0x1860 [ 724.781425][ T1123] ? compat_do_ip6t_get_ctl+0x9a0/0x9a0 [ 724.787523][ T1123] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 724.793826][ T1123] ? _copy_from_user+0x12c/0x1a0 [ 724.799403][ T1123] do_ip6t_set_ctl+0x2fe/0x4c8 [ 724.804205][ T1123] ? compat_do_ip6t_set_ctl+0x170/0x170 [ 724.810123][ T1123] ? mutex_unlock+0xd/0x10 [ 724.814941][ T1123] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 724.821596][ T1123] nf_setsockopt+0x77/0xd0 [ 724.826697][ T1123] ipv6_setsockopt+0x147/0x180 [ 724.831756][ T1123] tcp_setsockopt+0x8f/0xe0 [ 724.836596][ T1123] sock_common_setsockopt+0x94/0xd0 [ 724.842219][ T1123] __sys_setsockopt+0x261/0x4c0 [ 724.847527][ T1123] ? sock_create_kern+0x50/0x50 [ 724.852598][ T1123] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 724.859630][ T1123] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 724.865243][ T1123] ? do_syscall_64+0x26/0x790 [ 724.870882][ T1123] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 724.877500][ T1123] ? do_syscall_64+0x26/0x790 [ 724.882332][ T1123] __x64_sys_setsockopt+0xbe/0x150 [ 724.888073][ T1123] do_syscall_64+0xfa/0x790 [ 724.892829][ T1123] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 724.899458][ T1123] RIP: 0033:0x442259 [ 724.903597][ T1123] Code: 2e 0a 00 00 00 00 00 00 00 43 6c 65 61 6e 20 73 68 75 74 64 6f 77 6e 20 63 6f 6d 70 6c 65 74 65 64 2c 20 62 79 65 0a 00 00 72 <73> 79 73 6c 6f 67 64 3a 20 45 6e 64 20 6f 66 20 63 6f 6e 66 69 67 [ 724.924833][ T1123] RSP: 002b:00007ffebae0c1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 724.933925][ T1123] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442259 [ 724.942464][ T1123] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 [ 724.951014][ T1123] RBP: 00000000006cc018 R08: 0000000000000380 R09: 00000000004002c8 [ 724.959628][ T1123] R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000402fd0 [ 724.968310][ T1123] R13: 0000000000403060 R14: 0000000000000000 R15: 0000000000000000 [ 724.976913][ T1123] [ 724.976913][ T1123] Showing all locks held in the system: [ 724.985033][ T1123] 1 lock held by khungtaskd/1123: [ 724.991237][ T1123] #0: ffffffff89bac240 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 [ 725.001151][ T1123] 4 locks held by rs:main Q:Reg/9837: [ 725.007135][ T1123] 1 lock held by rsyslogd/9839: [ 725.012359][ T1123] #0: ffff8880a79cc620 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 725.022144][ T1123] 2 locks held by getty/9929: [ 725.027747][ T1123] #0: ffff8880a307f090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 725.037101][ T1123] #1: ffffc9000574b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 725.047396][ T1123] 2 locks held by getty/9930: [ 725.052274][ T1123] #0: ffff888097006090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 725.061904][ T1123] #1: ffffc9000576f2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 725.071801][ T1123] 2 locks held by getty/9931: [ 725.076760][ T1123] #0: ffff888099cb3090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 725.086538][ T1123] #1: ffffc9000571b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 725.097151][ T1123] 2 locks held by getty/9932: [ 725.102226][ T1123] #0: ffff88809f1ac090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 725.112310][ T1123] #1: ffffc9000576b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 725.123485][ T1123] 2 locks held by getty/9933: [ 725.128544][ T1123] #0: ffff8880a67ad090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 725.138138][ T1123] #1: ffffc9000575b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 725.147928][ T1123] 2 locks held by getty/9934: [ 725.153055][ T1123] #0: ffff8880a78cc090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 725.162690][ T1123] #1: ffffc900057732e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 725.173202][ T1123] 2 locks held by getty/9935: [ 725.178278][ T1123] #0: ffff888097007090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 725.187935][ T1123] #1: ffffc900056e32e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 725.198021][ T1123] 1 lock held by syz-executor236/9956: [ 725.203890][ T1123] 1 lock held by syz-executor236/9961: [ 725.210017][ T1123] #0: ffffffff8a7d2620 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 725.221407][ T1123] 1 lock held by syz-executor236/9962: [ 725.227364][ T1123] #0: ffffffff8a7d2620 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 725.238544][ T1123] 1 lock held by syz-executor236/9963: [ 725.244271][ T1123] #0: ffffffff8a7d2620 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 725.256612][ T1123] 1 lock held by syz-executor236/9964: [ 725.262636][ T1123] #0: ffffffff8a7d2620 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 725.273799][ T1123] 1 lock held by syz-executor236/9965: [ 725.279918][ T1123] #0: ffffffff8a7d2620 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 725.291711][ T1123] [ 725.294084][ T1123] ============================================= [ 725.294084][ T1123] [ 725.303019][ T1123] NMI backtrace for cpu 1 [ 725.307697][ T1123] CPU: 1 PID: 1123 Comm: khungtaskd Not tainted 5.6.0-rc1-syzkaller #0 [ 725.315942][ T1123] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 725.326291][ T1123] Call Trace: [ 725.330033][ T1123] dump_stack+0x197/0x210 [ 725.335009][ T1123] nmi_cpu_backtrace.cold+0x70/0xb2 [ 725.340622][ T1123] ? vprintk_func+0x86/0x189 [ 725.345529][ T1123] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 725.351612][ T1123] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 725.358047][ T1123] arch_trigger_cpumask_backtrace+0x14/0x20 [ 725.364525][ T1123] watchdog+0xb11/0x10c0 [ 725.369066][ T1123] kthread+0x361/0x430 [ 725.373278][ T1123] ? reset_hung_task_detector+0x30/0x30 [ 725.379103][ T1123] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 725.385331][ T1123] ret_from_fork+0x24/0x30 [ 725.390559][ T1123] Sending NMI from CPU 1 to CPUs 0: [ 725.397095][ C0] NMI backtrace for cpu 0 [ 725.397102][ C0] CPU: 0 PID: 9956 Comm: syz-executor236 Not tainted 5.6.0-rc1-syzkaller #0 [ 725.397109][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 725.397113][ C0] RIP: 0010:__lock_acquire+0x1291/0x4a00 [ 725.397126][ C0] Code: 5f ee ff ff 83 fe 01 0f 87 62 ee ff ff 48 b8 00 00 00 00 00 fc ff df 41 89 f4 4b 8d 7c e6 08 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 eb 26 00 00 4f 8b 64 e6 08 4d 85 e4 0f 85 6f ee ff ff e9 2c [ 725.397130][ C0] RSP: 0018:ffffc900057d75e8 EFLAGS: 00000046 [ 725.397139][ C0] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 725.397144][ C0] RDX: 1ffff9200197f20d RSI: 0000000000000000 RDI: ffffc9000cbf9068 [ 725.397149][ C0] RBP: ffffc900057d7700 R08: 0000000000000001 R09: 0000000000000001 [ 725.397155][ C0] R10: fffffbfff154b438 R11: ffff8880a7cd23c0 R12: 0000000000000000 [ 725.397161][ C0] R13: 0000000000000000 R14: ffffc9000cbf9060 R15: 0000000000000000 [ 725.397167][ C0] FS: 0000000000a0d880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 725.397171][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 725.397177][ C0] CR2: 0000000020000000 CR3: 000000009f5a4000 CR4: 00000000001406f0 [ 725.397182][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 725.397188][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 725.397190][ C0] Call Trace: [ 725.397194][ C0] ? __schedule+0x93c/0x1f90 [ 725.397197][ C0] ? __kasan_check_read+0x11/0x20 [ 725.397201][ C0] ? mark_lock+0xc2/0x1220 [ 725.397204][ C0] ? mark_held_locks+0xf0/0xf0 [ 725.397207][ C0] ? mark_held_locks+0xa4/0xf0 [ 725.397211][ C0] lock_acquire+0x190/0x410 [ 725.397215][ C0] ? htable_selective_cleanup+0xa1/0x340 [ 725.397218][ C0] _raw_spin_lock_bh+0x33/0x50 [ 725.397222][ C0] ? htable_selective_cleanup+0xa1/0x340 [ 725.397226][ C0] htable_selective_cleanup+0xa1/0x340 [ 725.397229][ C0] htable_put+0x174/0x220 [ 725.397233][ C0] ? hashlimit_mt_destroy_v2+0x70/0x70 [ 725.397237][ C0] hashlimit_mt_destroy_v1+0x50/0x70 [ 725.397240][ C0] cleanup_match+0xde/0x170 [ 725.397244][ C0] ? icmp6_checkentry+0xa0/0xa0 [ 725.397248][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 725.397252][ C0] find_check_entry.isra.0+0x4da/0x9d0 [ 725.397256][ C0] ? __do_replace+0x950/0x950 [ 725.397260][ C0] ? lockdep_hardirqs_on+0x421/0x5e0 [ 725.397263][ C0] ? kvfree+0x4a/0x60 [ 725.397266][ C0] translate_table+0xd15/0x1860 [ 725.397270][ C0] ? compat_do_ip6t_get_ctl+0x9a0/0x9a0 [ 725.397275][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 725.397278][ C0] ? _copy_from_user+0x12c/0x1a0 [ 725.397282][ C0] do_ip6t_set_ctl+0x2fe/0x4c8 [ 725.397286][ C0] ? compat_do_ip6t_set_ctl+0x170/0x170 [ 725.397289][ C0] ? mutex_unlock+0xd/0x10 [ 725.397294][ C0] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 725.397297][ C0] nf_setsockopt+0x77/0xd0 [ 725.397300][ C0] ipv6_setsockopt+0x147/0x180 [ 725.397304][ C0] tcp_setsockopt+0x8f/0xe0 [ 725.397308][ C0] sock_common_setsockopt+0x94/0xd0 [ 725.397311][ C0] __sys_setsockopt+0x261/0x4c0 [ 725.397315][ C0] ? sock_create_kern+0x50/0x50 [ 725.397319][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 725.397323][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 725.397326][ C0] ? do_syscall_64+0x26/0x790 [ 725.397330][ C0] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 725.397334][ C0] ? do_syscall_64+0x26/0x790 [ 725.397338][ C0] __x64_sys_setsockopt+0xbe/0x150 [ 725.397341][ C0] do_syscall_64+0xfa/0x790 [ 725.397345][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 725.397348][ C0] RIP: 0033:0x442259 [ 725.397361][ 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 [ 725.397365][ C0] RSP: 002b:00007ffebae0c1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 725.397374][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000442259 [ 725.397379][ C0] RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000003 [ 725.397390][ C0] RBP: 00000000006cc018 R08: 0000000000000380 R09: 00000000004002c8 [ 725.397396][ C0] R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000402fd0 [ 725.397401][ C0] R13: 0000000000403060 R14: 0000000000000000 R15: 0000000000000000 [ 725.399275][ T1123] Kernel panic - not syncing: hung_task: blocked tasks [ 725.845217][ T1123] CPU: 1 PID: 1123 Comm: khungtaskd Not tainted 5.6.0-rc1-syzkaller #0 [ 725.854089][ T1123] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 725.865010][ T1123] Call Trace: [ 725.868561][ T1123] dump_stack+0x197/0x210 [ 725.873331][ T1123] panic+0x2e3/0x75c [ 725.877246][ T1123] ? add_taint.cold+0x16/0x16 [ 725.882225][ T1123] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 725.887888][ T1123] ? ___preempt_schedule+0x16/0x18 [ 725.893205][ T1123] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 725.899468][ T1123] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b [ 725.906296][ T1123] ? nmi_trigger_cpumask_backtrace+0x256/0x28b [ 725.912604][ T1123] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 725.919655][ T1123] watchdog+0xb22/0x10c0 [ 725.924019][ T1123] kthread+0x361/0x430 [ 725.928370][ T1123] ? reset_hung_task_detector+0x30/0x30 [ 725.934029][ T1123] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 725.940371][ T1123] ret_from_fork+0x24/0x30 [ 725.947363][ T1123] Kernel Offset: disabled [ 725.952528][ T1123] Rebooting in 86400 seconds..