[ 95.991387][ T27] audit: type=1800 audit(1581512498.206:27): pid=9835 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 96.023322][ T27] audit: type=1800 audit(1581512498.226:28): pid=9835 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 97.093397][ T27] audit: type=1800 audit(1581512499.376:29): pid=9835 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 [ 97.114805][ T27] audit: type=1800 audit(1581512499.376:30): pid=9835 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 '10.128.1.27' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 929.602678][ T1127] INFO: task syz-executor327:9998 blocked for more than 143 seconds. [ 929.611305][ T1127] Not tainted 5.5.0-syzkaller #0 [ 929.618042][ T1127] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 929.627266][ T1127] syz-executor327 D28072 9998 9994 0x00004004 [ 929.634025][ T1127] Call Trace: [ 929.637707][ T1127] __schedule+0x934/0x1f90 [ 929.642695][ T1127] ? __sched_text_start+0x8/0x8 [ 929.647708][ T1127] ? lock_downgrade+0x920/0x920 [ 929.652894][ T1127] ? rwlock_bug.part.0+0x90/0x90 [ 929.658181][ T1127] schedule+0xdc/0x2b0 [ 929.662841][ T1127] schedule_preempt_disabled+0x13/0x20 [ 929.668430][ T1127] __mutex_lock+0x7ab/0x13c0 [ 929.674280][ T1127] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 929.680848][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 929.685928][ T1127] ? mark_held_locks+0xf0/0xf0 [ 929.691012][ T1127] ? mark_held_locks+0xf0/0xf0 [ 929.696087][ T1127] ? pcpu_next_md_free_region+0x176/0x350 [ 929.701995][ T1127] mutex_lock_nested+0x16/0x20 [ 929.707189][ T1127] ? mutex_lock_nested+0x16/0x20 [ 929.712754][ T1127] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 929.719502][ T1127] hashlimit_mt_check_v1+0x325/0x3ab [ 929.725718][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 929.731369][ T1127] ? lock_downgrade+0x920/0x920 [ 929.736688][ T1127] ? xt_find_match+0xa6/0x280 [ 929.741427][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 929.746969][ T1127] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 929.753443][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 929.758980][ T1127] xt_check_match+0x280/0x690 [ 929.764323][ T1127] ? xt_check_target+0x690/0x690 [ 929.769297][ T1127] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 929.775870][ T1127] ? mutex_unlock+0xd/0x10 [ 929.780325][ T1127] ? xt_find_match+0x73/0x280 [ 929.786217][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 929.792885][ T1127] find_check_entry.isra.0+0x32f/0x920 [ 929.798755][ T1127] ? ipt_do_table+0x1b80/0x1b80 [ 929.804861][ T1127] ? lockdep_hardirqs_on+0x421/0x5e0 [ 929.810210][ T1127] ? trace_hardirqs_on+0x67/0x240 [ 929.815827][ T1127] ? kvfree+0x4a/0x60 [ 929.820098][ T1127] translate_table+0xcb4/0x17d0 [ 929.825547][ T1127] ? compat_do_ipt_get_ctl+0x910/0x910 [ 929.831240][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 929.837975][ T1127] ? _copy_from_user+0x12c/0x1a0 [ 929.843263][ T1127] do_ipt_set_ctl+0x2fe/0x4c2 [ 929.847990][ T1127] ? compat_do_ipt_set_ctl+0x170/0x170 [ 929.853930][ T1127] ? mutex_unlock+0xd/0x10 [ 929.858397][ T1127] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 929.864913][ T1127] nf_setsockopt+0x77/0xd0 [ 929.869590][ T1127] ip_setsockopt+0xdf/0x100 [ 929.874488][ T1127] tcp_setsockopt+0x8f/0xe0 [ 929.879135][ T1127] sock_common_setsockopt+0x94/0xd0 [ 929.884996][ T1127] __sys_setsockopt+0x261/0x4c0 [ 929.890062][ T1127] ? sock_create_kern+0x50/0x50 [ 929.895350][ T1127] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 929.900959][ T1127] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 929.907327][ T1127] ? do_syscall_64+0x26/0x790 [ 929.912689][ T1127] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 929.918816][ T1127] ? do_syscall_64+0x26/0x790 [ 929.924134][ T1127] __x64_sys_setsockopt+0xbe/0x150 [ 929.929625][ T1127] do_syscall_64+0xfa/0x790 [ 929.935653][ T1127] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 929.941816][ T1127] RIP: 0033:0x441c39 [ 929.946201][ T1127] Code: 73 75 70 70 6f 72 74 65 64 20 69 6e 20 63 6f 6d 70 61 74 69 62 69 6c 69 74 79 20 6d 6f 64 65 73 20 30 20 74 6f 20 32 20 2d 20 <69> 67 6e 6f 72 65 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 [ 929.967032][ T1127] RSP: 002b:00007ffc060810a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 929.976491][ T1127] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 929.985528][ T1127] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 929.995151][ T1127] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 930.003524][ T1127] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 930.011799][ T1127] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 930.020730][ T1127] INFO: task syz-executor327:9999 blocked for more than 143 seconds. [ 930.029381][ T1127] Not tainted 5.5.0-syzkaller #0 [ 930.035290][ T1127] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 930.044673][ T1127] syz-executor327 D28072 9999 9997 0x00004004 [ 930.051055][ T1127] Call Trace: [ 930.055018][ T1127] __schedule+0x934/0x1f90 [ 930.059697][ T1127] ? __sched_text_start+0x8/0x8 [ 930.066215][ T1127] ? lock_downgrade+0x920/0x920 [ 930.071535][ T1127] ? rwlock_bug.part.0+0x90/0x90 [ 930.076918][ T1127] schedule+0xdc/0x2b0 [ 930.081167][ T1127] schedule_preempt_disabled+0x13/0x20 [ 930.087213][ T1127] __mutex_lock+0x7ab/0x13c0 [ 930.091934][ T1127] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.098910][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 930.104179][ T1127] ? mark_held_locks+0xf0/0xf0 [ 930.109094][ T1127] ? mark_held_locks+0xf0/0xf0 [ 930.114233][ T1127] ? pcpu_next_md_free_region+0x176/0x350 [ 930.120157][ T1127] mutex_lock_nested+0x16/0x20 [ 930.125434][ T1127] ? mutex_lock_nested+0x16/0x20 [ 930.130607][ T1127] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.137630][ T1127] hashlimit_mt_check_v1+0x325/0x3ab [ 930.143637][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 930.149409][ T1127] ? lock_downgrade+0x920/0x920 [ 930.154709][ T1127] ? xt_find_match+0xa6/0x280 [ 930.159460][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 930.164707][ T1127] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 930.171280][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 930.177195][ T1127] xt_check_match+0x280/0x690 [ 930.182220][ T1127] ? xt_check_target+0x690/0x690 [ 930.188332][ T1127] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 930.195932][ T1127] ? mutex_unlock+0xd/0x10 [ 930.200698][ T1127] ? xt_find_match+0x73/0x280 [ 930.205861][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.212324][ T1127] find_check_entry.isra.0+0x32f/0x920 [ 930.218169][ T1127] ? ipt_do_table+0x1b80/0x1b80 [ 930.223572][ T1127] ? lockdep_hardirqs_on+0x421/0x5e0 [ 930.229162][ T1127] ? trace_hardirqs_on+0x67/0x240 [ 930.234455][ T1127] ? kvfree+0x4a/0x60 [ 930.238619][ T1127] translate_table+0xcb4/0x17d0 [ 930.244002][ T1127] ? compat_do_ipt_get_ctl+0x910/0x910 [ 930.249499][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.256461][ T1127] ? _copy_from_user+0x12c/0x1a0 [ 930.261801][ T1127] do_ipt_set_ctl+0x2fe/0x4c2 [ 930.266861][ T1127] ? compat_do_ipt_set_ctl+0x170/0x170 [ 930.272553][ T1127] ? mutex_unlock+0xd/0x10 [ 930.277145][ T1127] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 930.283773][ T1127] nf_setsockopt+0x77/0xd0 [ 930.288237][ T1127] ip_setsockopt+0xdf/0x100 [ 930.293273][ T1127] tcp_setsockopt+0x8f/0xe0 [ 930.297844][ T1127] sock_common_setsockopt+0x94/0xd0 [ 930.303508][ T1127] __sys_setsockopt+0x261/0x4c0 [ 930.308401][ T1127] ? sock_create_kern+0x50/0x50 [ 930.313637][ T1127] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 930.319456][ T1127] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 930.326379][ T1127] ? do_syscall_64+0x26/0x790 [ 930.331225][ T1127] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.337732][ T1127] ? do_syscall_64+0x26/0x790 [ 930.343125][ T1127] __x64_sys_setsockopt+0xbe/0x150 [ 930.348647][ T1127] do_syscall_64+0xfa/0x790 [ 930.353426][ T1127] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.359528][ T1127] RIP: 0033:0x441c39 [ 930.363922][ T1127] Code: 73 75 70 70 6f 72 74 65 64 20 69 6e 20 63 6f 6d 70 61 74 69 62 69 6c 69 74 79 20 6d 6f 64 65 73 20 30 20 74 6f 20 32 20 2d 20 <69> 67 6e 6f 72 65 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 [ 930.383998][ T1127] RSP: 002b:00007ffc060810a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 930.393276][ T1127] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 930.401825][ T1127] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 930.410220][ T1127] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 930.418726][ T1127] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 930.427414][ T1127] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 930.435686][ T1127] INFO: task syz-executor327:10000 blocked for more than 144 seconds. [ 930.444125][ T1127] Not tainted 5.5.0-syzkaller #0 [ 930.449744][ T1127] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 930.460033][ T1127] syz-executor327 D28072 10000 9996 0x00004004 [ 930.467022][ T1127] Call Trace: [ 930.470509][ T1127] __schedule+0x934/0x1f90 [ 930.475296][ T1127] ? __sched_text_start+0x8/0x8 [ 930.480411][ T1127] ? lock_downgrade+0x920/0x920 [ 930.486331][ T1127] ? rwlock_bug.part.0+0x90/0x90 [ 930.491471][ T1127] schedule+0xdc/0x2b0 [ 930.496003][ T1127] schedule_preempt_disabled+0x13/0x20 [ 930.501651][ T1127] __mutex_lock+0x7ab/0x13c0 [ 930.506664][ T1127] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.513398][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 930.518230][ T1127] ? mark_held_locks+0xf0/0xf0 [ 930.524503][ T1127] ? mark_held_locks+0xf0/0xf0 [ 930.529581][ T1127] ? pcpu_next_md_free_region+0x176/0x350 [ 930.535856][ T1127] mutex_lock_nested+0x16/0x20 [ 930.540678][ T1127] ? mutex_lock_nested+0x16/0x20 [ 930.546046][ T1127] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.552681][ T1127] hashlimit_mt_check_v1+0x325/0x3ab [ 930.558209][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 930.563960][ T1127] ? lock_downgrade+0x920/0x920 [ 930.568839][ T1127] ? xt_find_match+0xa6/0x280 [ 930.573933][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 930.578728][ T1127] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 930.586095][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 930.591858][ T1127] xt_check_match+0x280/0x690 [ 930.597020][ T1127] ? xt_check_target+0x690/0x690 [ 930.602161][ T1127] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 930.609310][ T1127] ? mutex_unlock+0xd/0x10 [ 930.614150][ T1127] ? xt_find_match+0x73/0x280 [ 930.619263][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.625916][ T1127] find_check_entry.isra.0+0x32f/0x920 [ 930.631508][ T1127] ? ipt_do_table+0x1b80/0x1b80 [ 930.636903][ T1127] ? lockdep_hardirqs_on+0x421/0x5e0 [ 930.642235][ T1127] ? trace_hardirqs_on+0x67/0x240 [ 930.648048][ T1127] ? kvfree+0x4a/0x60 [ 930.652127][ T1127] translate_table+0xcb4/0x17d0 [ 930.657534][ T1127] ? compat_do_ipt_get_ctl+0x910/0x910 [ 930.663404][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.669689][ T1127] ? _copy_from_user+0x12c/0x1a0 [ 930.675383][ T1127] do_ipt_set_ctl+0x2fe/0x4c2 [ 930.680318][ T1127] ? compat_do_ipt_set_ctl+0x170/0x170 [ 930.686105][ T1127] ? mutex_unlock+0xd/0x10 [ 930.690714][ T1127] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 930.697161][ T1127] nf_setsockopt+0x77/0xd0 [ 930.702238][ T1127] ip_setsockopt+0xdf/0x100 [ 930.707088][ T1127] tcp_setsockopt+0x8f/0xe0 [ 930.712280][ T1127] sock_common_setsockopt+0x94/0xd0 [ 930.718928][ T1127] __sys_setsockopt+0x261/0x4c0 [ 930.725116][ T1127] ? sock_create_kern+0x50/0x50 [ 930.730195][ T1127] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 930.736184][ T1127] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 930.741767][ T1127] ? do_syscall_64+0x26/0x790 [ 930.747062][ T1127] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.753407][ T1127] ? do_syscall_64+0x26/0x790 [ 930.758370][ T1127] __x64_sys_setsockopt+0xbe/0x150 [ 930.763869][ T1127] do_syscall_64+0xfa/0x790 [ 930.768829][ T1127] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.775009][ T1127] RIP: 0033:0x441c39 [ 930.779050][ T1127] Code: 73 75 70 70 6f 72 74 65 64 20 69 6e 20 63 6f 6d 70 61 74 69 62 69 6c 69 74 79 20 6d 6f 64 65 73 20 30 20 74 6f 20 32 20 2d 20 <69> 67 6e 6f 72 65 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 [ 930.799978][ T1127] RSP: 002b:00007ffc060810a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 930.808997][ T1127] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 930.817418][ T1127] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 930.826113][ T1127] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 930.834640][ T1127] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 930.843999][ T1127] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 930.852234][ T1127] INFO: task syz-executor327:10001 blocked for more than 144 seconds. [ 930.860909][ T1127] Not tainted 5.5.0-syzkaller #0 [ 930.866563][ T1127] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 930.875908][ T1127] syz-executor327 D27792 10001 9992 0x00004004 [ 930.882287][ T1127] Call Trace: [ 930.885937][ T1127] __schedule+0x934/0x1f90 [ 930.890562][ T1127] ? __sched_text_start+0x8/0x8 [ 930.895701][ T1127] ? lock_downgrade+0x920/0x920 [ 930.900904][ T1127] ? rwlock_bug.part.0+0x90/0x90 [ 930.906501][ T1127] schedule+0xdc/0x2b0 [ 930.910717][ T1127] schedule_preempt_disabled+0x13/0x20 [ 930.916737][ T1127] __mutex_lock+0x7ab/0x13c0 [ 930.921541][ T1127] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.928381][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 930.933843][ T1127] ? mark_held_locks+0xf0/0xf0 [ 930.938660][ T1127] ? mark_held_locks+0xf0/0xf0 [ 930.943928][ T1127] ? pcpu_next_md_free_region+0x176/0x350 [ 930.949690][ T1127] mutex_lock_nested+0x16/0x20 [ 930.954822][ T1127] ? mutex_lock_nested+0x16/0x20 [ 930.960082][ T1127] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.966759][ T1127] hashlimit_mt_check_v1+0x325/0x3ab [ 930.972341][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 930.979392][ T1127] ? lock_downgrade+0x920/0x920 [ 930.988083][ T1127] ? xt_find_match+0xa6/0x280 [ 930.993000][ T1127] ? mutex_trylock+0x2d0/0x2d0 [ 930.998079][ T1127] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 931.004721][ T1127] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 931.010229][ T1127] xt_check_match+0x280/0x690 [ 931.015405][ T1127] ? xt_check_target+0x690/0x690 [ 931.020670][ T1127] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 931.027402][ T1127] ? mutex_unlock+0xd/0x10 [ 931.031847][ T1127] ? xt_find_match+0x73/0x280 [ 931.037214][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 931.043952][ T1127] find_check_entry.isra.0+0x32f/0x920 [ 931.049556][ T1127] ? ipt_do_table+0x1b80/0x1b80 [ 931.054922][ T1127] ? lockdep_hardirqs_on+0x421/0x5e0 [ 931.060256][ T1127] ? trace_hardirqs_on+0x67/0x240 [ 931.066219][ T1127] ? kvfree+0x4a/0x60 [ 931.070376][ T1127] translate_table+0xcb4/0x17d0 [ 931.075888][ T1127] ? compat_do_ipt_get_ctl+0x910/0x910 [ 931.081534][ T1127] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 931.088423][ T1127] ? _copy_from_user+0x12c/0x1a0 [ 931.093810][ T1127] do_ipt_set_ctl+0x2fe/0x4c2 [ 931.098672][ T1127] ? compat_do_ipt_set_ctl+0x170/0x170 [ 931.105367][ T1127] ? mutex_unlock+0xd/0x10 [ 931.110011][ T1127] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 931.116436][ T1127] nf_setsockopt+0x77/0xd0 [ 931.120898][ T1127] ip_setsockopt+0xdf/0x100 [ 931.125796][ T1127] tcp_setsockopt+0x8f/0xe0 [ 931.130456][ T1127] sock_common_setsockopt+0x94/0xd0 [ 931.135949][ T1127] __sys_setsockopt+0x261/0x4c0 [ 931.141064][ T1127] ? sock_create_kern+0x50/0x50 [ 931.146297][ T1127] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 931.152045][ T1127] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 931.157992][ T1127] ? do_syscall_64+0x26/0x790 [ 931.162908][ T1127] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 931.169250][ T1127] ? do_syscall_64+0x26/0x790 [ 931.174230][ T1127] __x64_sys_setsockopt+0xbe/0x150 [ 931.179650][ T1127] do_syscall_64+0xfa/0x790 [ 931.184455][ T1127] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 931.190516][ T1127] RIP: 0033:0x441c39 [ 931.194706][ T1127] Code: 73 75 70 70 6f 72 74 65 64 20 69 6e 20 63 6f 6d 70 61 74 69 62 69 6c 69 74 79 20 6d 6f 64 65 73 20 30 20 74 6f 20 32 20 2d 20 <69> 67 6e 6f 72 65 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 [ 931.214683][ T1127] RSP: 002b:00007ffc060810a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 931.223903][ T1127] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 931.233932][ T1127] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 931.242223][ T1127] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 931.250722][ T1127] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 931.259195][ T1127] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 931.267930][ T1127] [ 931.267930][ T1127] Showing all locks held in the system: [ 931.276204][ T1127] 1 lock held by khungtaskd/1127: [ 931.281256][ T1127] #0: ffffffff89bac200 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 [ 931.291047][ T1127] 1 lock held by rsyslogd/9873: [ 931.296326][ T1127] #0: ffff88808f5fae20 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 931.305264][ T1127] 2 locks held by getty/9963: [ 931.310943][ T1127] #0: ffff88809f07f090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 931.320331][ T1127] #1: ffffc9000181b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 931.330413][ T1127] 2 locks held by getty/9964: [ 931.335312][ T1127] #0: ffff888097cb3090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 931.344852][ T1127] #1: ffffc900018ab2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 931.354827][ T1127] 2 locks held by getty/9965: [ 931.359688][ T1127] #0: ffff88809f084090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 931.369882][ T1127] #1: ffffc9000186b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 931.379813][ T1127] 2 locks held by getty/9966: [ 931.384843][ T1127] #0: ffff8880a6ac4090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 931.394362][ T1127] #1: ffffc9000188b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 931.404313][ T1127] 2 locks held by getty/9967: [ 931.408995][ T1127] #0: ffff888095233090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 931.418553][ T1127] #1: ffffc9000189b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 931.429083][ T1127] 2 locks held by getty/9968: [ 931.434089][ T1127] #0: ffff88809557c090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 931.443641][ T1127] #1: ffffc9000187b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 931.453871][ T1127] 2 locks held by getty/9969: [ 931.458866][ T1127] #0: ffff88808b7e2090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 931.468454][ T1127] #1: ffffc900017eb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 931.478651][ T1127] 1 lock held by syz-executor327/9993: [ 931.484743][ T1127] 1 lock held by syz-executor327/9998: [ 931.490393][ T1127] #0: ffffffff8a7d0e20 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.503101][ T1127] 1 lock held by syz-executor327/9999: [ 931.508600][ T1127] #0: ffffffff8a7d0e20 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.520097][ T1127] 1 lock held by syz-executor327/10000: [ 931.526078][ T1127] #0: ffffffff8a7d0e20 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.537295][ T1127] 1 lock held by syz-executor327/10001: [ 931.543151][ T1127] #0: ffffffff8a7d0e20 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.554497][ T1127] 1 lock held by syz-executor327/10002: [ 931.560236][ T1127] #0: ffffffff8a7d0e20 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.571312][ T1127] [ 931.574141][ T1127] ============================================= [ 931.574141][ T1127] [ 931.582884][ T1127] NMI backtrace for cpu 0 [ 931.587252][ T1127] CPU: 0 PID: 1127 Comm: khungtaskd Not tainted 5.5.0-syzkaller #0 [ 931.595184][ T1127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 931.605268][ T1127] Call Trace: [ 931.608971][ T1127] dump_stack+0x197/0x210 [ 931.613529][ T1127] nmi_cpu_backtrace.cold+0x70/0xb2 [ 931.618781][ T1127] ? vprintk_func+0x86/0x189 [ 931.623573][ T1127] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 931.629481][ T1127] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 931.635524][ T1127] arch_trigger_cpumask_backtrace+0x14/0x20 [ 931.641448][ T1127] watchdog+0xb11/0x10c0 [ 931.645756][ T1127] kthread+0x361/0x430 [ 931.650050][ T1127] ? reset_hung_task_detector+0x30/0x30 [ 931.655646][ T1127] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 931.661416][ T1127] ret_from_fork+0x24/0x30 [ 931.666087][ T1127] Sending NMI from CPU 0 to CPUs 1: [ 931.672110][ C1] NMI backtrace for cpu 1 [ 931.672121][ C1] CPU: 1 PID: 9993 Comm: syz-executor327 Not tainted 5.5.0-syzkaller #0 [ 931.672128][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 931.672138][ C1] RIP: 0010:__lock_acquire+0x16fa/0x4a00 [ 931.672151][ C1] Code: ff 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 f8 06 48 8d 3c c5 60 7b 51 8b e8 1e 25 59 00 48 0f a3 1d 16 ab f6 09 <4c> 8b 95 70 ff ff ff 4c 8b 9d 30 ff ff ff 0f 83 39 09 00 00 49 b8 [ 931.672155][ C1] RSP: 0018:ffffc90001f475f0 EFLAGS: 00000047 [ 931.672163][ C1] RAX: 0000000000000001 RBX: 000000000000058b RCX: ffffffff815ad042 [ 931.672168][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8b517c10 [ 931.672173][ C1] RBP: ffffc90001f47708 R08: 1ffffffff16a2f82 R09: fffffbfff16a2f83 [ 931.672179][ C1] R10: fffffbfff16a2f82 R11: ffffffff8b517c17 R12: 00000000b151b421 [ 931.672184][ C1] R13: ffffffff8aa5ba90 R14: ffff8880a573ce18 R15: 0000000000000000 [ 931.672190][ C1] FS: 00000000021bc880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 931.672195][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 931.672200][ C1] CR2: ffffffffff600400 CR3: 000000009efef000 CR4: 00000000001406e0 [ 931.672205][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 931.672211][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 931.672213][ C1] Call Trace: [ 931.672217][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 931.672221][ C1] ? mark_held_locks+0xf0/0xf0 [ 931.672224][ C1] ? mark_held_locks+0xa4/0xf0 [ 931.672228][ C1] lock_acquire+0x190/0x410 [ 931.672232][ C1] ? htable_selective_cleanup+0xa1/0x340 [ 931.672241][ C1] _raw_spin_lock_bh+0x33/0x50 [ 931.672245][ C1] ? htable_selective_cleanup+0xa1/0x340 [ 931.672249][ C1] htable_selective_cleanup+0xa1/0x340 [ 931.672252][ C1] htable_put+0x174/0x220 [ 931.672256][ C1] ? hashlimit_mt_destroy_v2+0x70/0x70 [ 931.672260][ C1] hashlimit_mt_destroy_v1+0x50/0x70 [ 931.672264][ C1] cleanup_match+0xde/0x170 [ 931.672267][ C1] ? icmp_checkentry+0xa0/0xa0 [ 931.672271][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 931.672275][ C1] find_check_entry.isra.0+0x454/0x920 [ 931.672279][ C1] ? ipt_do_table+0x1b80/0x1b80 [ 931.672283][ C1] ? lockdep_hardirqs_on+0x421/0x5e0 [ 931.672286][ C1] ? kvfree+0x4a/0x60 [ 931.672289][ C1] translate_table+0xcb4/0x17d0 [ 931.672293][ C1] ? compat_do_ipt_get_ctl+0x910/0x910 [ 931.672297][ C1] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 931.672301][ C1] ? _copy_from_user+0x12c/0x1a0 [ 931.672304][ C1] do_ipt_set_ctl+0x2fe/0x4c2 [ 931.672308][ C1] ? compat_do_ipt_set_ctl+0x170/0x170 [ 931.672311][ C1] ? mutex_unlock+0xd/0x10 [ 931.672314][ C1] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 931.672317][ C1] nf_setsockopt+0x77/0xd0 [ 931.672320][ C1] ip_setsockopt+0xdf/0x100 [ 931.672322][ C1] tcp_setsockopt+0x8f/0xe0 [ 931.672326][ C1] sock_common_setsockopt+0x94/0xd0 [ 931.672328][ C1] __sys_setsockopt+0x261/0x4c0 [ 931.672331][ C1] ? sock_create_kern+0x50/0x50 [ 931.672339][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 931.672342][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 931.672345][ C1] ? do_syscall_64+0x26/0x790 [ 931.672349][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 931.672352][ C1] ? do_syscall_64+0x26/0x790 [ 931.672355][ C1] __x64_sys_setsockopt+0xbe/0x150 [ 931.672357][ C1] do_syscall_64+0xfa/0x790 [ 931.672361][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 931.672370][ C1] RIP: 0033:0x441c39 [ 931.672381][ 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 [ 931.672390][ C1] RSP: 002b:00007ffc060810a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 931.672399][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 931.672403][ C1] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 931.672408][ C1] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 931.672412][ C1] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 931.672417][ C1] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 931.674805][ T1127] Kernel panic - not syncing: hung_task: blocked tasks [ 932.096753][ T1127] CPU: 0 PID: 1127 Comm: khungtaskd Not tainted 5.5.0-syzkaller #0 [ 932.104662][ T1127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 932.114730][ T1127] Call Trace: [ 932.118043][ T1127] dump_stack+0x197/0x210 [ 932.122404][ T1127] panic+0x2e3/0x75c [ 932.126344][ T1127] ? add_taint.cold+0x16/0x16 [ 932.131051][ T1127] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 932.136716][ T1127] ? ___preempt_schedule+0x16/0x18 [ 932.141860][ T1127] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 932.148046][ T1127] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b [ 932.154326][ T1127] ? nmi_trigger_cpumask_backtrace+0x256/0x28b [ 932.160505][ T1127] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 932.166697][ T1127] watchdog+0xb22/0x10c0 [ 932.170990][ T1127] kthread+0x361/0x430 [ 932.175088][ T1127] ? reset_hung_task_detector+0x30/0x30 [ 932.180727][ T1127] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 932.186470][ T1127] ret_from_fork+0x24/0x30 [ 932.192794][ T1127] Kernel Offset: disabled [ 932.197186][ T1127] Rebooting in 86400 seconds..