[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 88.071088][ T27] audit: type=1800 audit(1581261016.861:25): pid=9527 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 88.090822][ T27] audit: type=1800 audit(1581261016.861:26): pid=9527 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 88.136274][ T27] audit: type=1800 audit(1581261016.861:27): pid=9527 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 '10.128.0.208' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 798.603370][ T9688] Cannot find add_set index 0 as target [ 798.605457][ T9696] Cannot find add_set index 0 as target [ 798.613450][ T9699] Cannot find add_set index 0 as target [ 798.614731][ T9694] Cannot find add_set index 0 as target [ 798.620940][ T9698] Cannot find add_set index 0 as target [ 798.625886][ T9697] Cannot find add_set index 0 as target [ 798.635690][ T9700] Cannot find add_set index 0 as target [ 798.643492][ T9701] Cannot find add_set index 0 as target executing program executing program executing program executing program executing program [ 798.650974][ T9703] Cannot find add_set index 0 as target [ 798.652282][ T9702] Cannot find add_set index 0 as target [ 942.896375][ T1143] INFO: task syz-executor512:9698 blocked for more than 143 seconds. [ 942.904626][ T1143] Not tainted 5.5.0-syzkaller #0 [ 942.910181][ T1143] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 942.918917][ T1143] syz-executor512 D28072 9698 9691 0x00004004 [ 942.925266][ T1143] Call Trace: [ 942.929675][ T1143] __schedule+0x934/0x1f90 [ 942.934141][ T1143] ? __sched_text_start+0x8/0x8 [ 942.939149][ T1143] ? __lock_acquire+0x29c9/0x4a00 [ 942.944209][ T1143] schedule+0xdc/0x2b0 [ 942.948354][ T1143] schedule_timeout+0x717/0xc50 [ 942.953287][ T1143] ? __kasan_check_read+0x11/0x20 [ 942.958413][ T1143] ? usleep_range+0x170/0x170 [ 942.963115][ T1143] ? mark_held_locks+0xa4/0xf0 [ 942.967938][ T1143] ? _raw_spin_unlock_irq+0x23/0x80 [ 942.973156][ T1143] ? wait_for_completion+0x294/0x440 [ 942.978545][ T1143] ? _raw_spin_unlock_irq+0x23/0x80 [ 942.983758][ T1143] ? lockdep_hardirqs_on+0x421/0x5e0 [ 942.989142][ T1143] ? trace_hardirqs_on+0x67/0x240 [ 942.994195][ T1143] wait_for_completion+0x29c/0x440 [ 942.999411][ T1143] ? wait_for_completion_interruptible+0x470/0x470 [ 943.005988][ T1143] ? wake_up_q+0x140/0x140 [ 943.010510][ T1143] ? lockdep_hardirqs_on+0x421/0x5e0 [ 943.015819][ T1143] ? __kasan_check_read+0x11/0x20 [ 943.021009][ T1143] __flush_work+0x4fe/0xa50 [ 943.025575][ T1143] ? mark_held_locks+0xf0/0xf0 [ 943.030433][ T1143] ? queue_delayed_work_on+0x210/0x210 [ 943.035914][ T1143] ? init_pwq+0x360/0x360 [ 943.040348][ T1143] ? __cancel_work_timer+0xc4/0x540 [ 943.045560][ T1143] ? __cancel_work_timer+0x1e0/0x540 [ 943.050922][ T1143] ? cancel_delayed_work_sync+0x1b/0x20 [ 943.057535][ T1143] ? __cancel_work_timer+0x1e0/0x540 [ 943.062854][ T1143] ? lockdep_hardirqs_on+0x421/0x5e0 [ 943.068210][ T1143] ? trace_hardirqs_on+0x67/0x240 [ 943.073262][ T1143] __cancel_work_timer+0x3d9/0x540 [ 943.078453][ T1143] ? mod_delayed_work_on+0x200/0x200 [ 943.083875][ T1143] ? set_target_v0_checkentry+0x201/0x4f0 [ 943.089669][ T1143] ? set_target_v0_checkentry+0x188/0x4f0 [ 943.095417][ T1143] ? set_target_v1_checkentry+0x4d0/0x4d0 [ 943.101295][ T1143] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 943.107595][ T1143] cancel_delayed_work_sync+0x1b/0x20 [ 943.112992][ T1143] htable_put+0x15f/0x220 [ 943.117423][ T1143] ? htable_put+0x220/0x220 [ 943.122065][ T1143] hashlimit_mt_destroy+0x56/0x70 [ 943.127381][ T1143] cleanup_match+0xde/0x170 [ 943.131905][ T1143] ? icmp_checkentry+0xa0/0xa0 [ 943.136904][ T1143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 943.143176][ T1143] find_check_entry.isra.0+0x454/0x920 [ 943.148888][ T1143] ? ipt_do_table+0x1b80/0x1b80 [ 943.153878][ T1143] ? lockdep_hardirqs_on+0x421/0x5e0 [ 943.159474][ T1143] ? kvfree+0x4a/0x60 [ 943.163494][ T1143] translate_table+0xcb4/0x17d0 [ 943.168582][ T1143] ? compat_do_ipt_get_ctl+0x910/0x910 [ 943.174063][ T1143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 943.180586][ T1143] ? _copy_from_user+0x12c/0x1a0 [ 943.185545][ T1143] do_ipt_set_ctl+0x2fe/0x4c2 [ 943.191378][ T1143] ? compat_do_ipt_set_ctl+0x170/0x170 [ 943.197070][ T1143] ? mutex_unlock+0xd/0x10 [ 943.201604][ T1143] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 943.207802][ T1143] nf_setsockopt+0x77/0xd0 [ 943.212295][ T1143] ip_setsockopt+0xdf/0x100 [ 943.217082][ T1143] udp_setsockopt+0x68/0xb0 [ 943.221673][ T1143] sock_common_setsockopt+0x94/0xd0 [ 943.227095][ T1143] __sys_setsockopt+0x261/0x4c0 [ 943.231965][ T1143] ? sock_create_kern+0x50/0x50 [ 943.237068][ T1143] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 943.242795][ T1143] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 943.248466][ T1143] ? do_syscall_64+0x26/0x790 [ 943.253422][ T1143] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 943.259735][ T1143] ? do_syscall_64+0x26/0x790 [ 943.264435][ T1143] __x64_sys_setsockopt+0xbe/0x150 [ 943.269796][ T1143] do_syscall_64+0xfa/0x790 [ 943.274321][ T1143] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 943.280410][ T1143] RIP: 0033:0x441c69 [ 943.284310][ T1143] Code: 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 64 3a 20 76 65 72 73 69 6f 6e 20 25 73 2c 20 63 6f 6e 66 69 67 20 76 61 6c 69 <64> 61 74 69 6f 6e 20 72 75 6e 20 28 6c 65 76 65 6c 20 25 64 29 2c [ 943.304125][ T1143] RSP: 002b:00007ffd45dfbde8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 943.312685][ T1143] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c69 [ 943.321949][ T1143] RDX: 0000000000000040 RSI: ffffff0f00000000 RDI: 0000000000000003 [ 943.330147][ T1143] RBP: 00000000006cc018 R08: 0000000000000418 R09: 00000000004002c8 [ 943.338314][ T1143] R10: 0000000020000380 R11: 0000000000000246 R12: 00000000004029e0 [ 943.346445][ T1143] R13: 0000000000402a70 R14: 0000000000000000 R15: 0000000000000000 [ 943.354464][ T1143] INFO: task syz-executor512:9704 blocked for more than 143 seconds. [ 943.362793][ T1143] Not tainted 5.5.0-syzkaller #0 [ 943.368447][ T1143] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 943.377360][ T1143] syz-executor512 D28072 9704 9690 0x00000004 [ 943.383705][ T1143] Call Trace: [ 943.387204][ T1143] __schedule+0x934/0x1f90 [ 943.391647][ T1143] ? __sched_text_start+0x8/0x8 [ 943.396733][ T1143] ? lock_downgrade+0x920/0x920 [ 943.401598][ T1143] ? rwlock_bug.part.0+0x90/0x90 [ 943.406736][ T1143] schedule+0xdc/0x2b0 [ 943.410821][ T1143] schedule_preempt_disabled+0x13/0x20 [ 943.416669][ T1143] __mutex_lock+0x7ab/0x13c0 [ 943.421294][ T1143] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 943.428043][ T1143] ? mutex_trylock+0x2d0/0x2d0 [ 943.432821][ T1143] ? mark_lock+0xc2/0x1220 [ 943.437506][ T1143] ? find_held_lock+0x35/0x130 [ 943.442291][ T1143] ? xt_find_match+0x1e8/0x280 [ 943.448181][ T1143] mutex_lock_nested+0x16/0x20 [ 943.452985][ T1143] ? mutex_lock_nested+0x16/0x20 [ 943.458218][ T1143] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 943.464594][ T1143] hashlimit_mt_check+0xa4/0xd0 [ 943.469726][ T1143] ? hashlimit_mt_check_common.isra.0+0x1500/0x1500 [ 943.476578][ T1143] xt_check_match+0x280/0x690 [ 943.481293][ T1143] ? xt_check_target+0x690/0x690 [ 943.486460][ T1143] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 943.492739][ T1143] ? mutex_unlock+0xd/0x10 [ 943.497407][ T1143] ? xt_find_match+0x73/0x280 [ 943.502108][ T1143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 943.508591][ T1143] find_check_entry.isra.0+0x32f/0x920 [ 943.514082][ T1143] ? ipt_do_table+0x1b80/0x1b80 [ 943.519184][ T1143] ? lockdep_hardirqs_on+0x421/0x5e0 [ 943.524501][ T1143] ? trace_hardirqs_on+0x67/0x240 [ 943.529770][ T1143] ? kvfree+0x4a/0x60 [ 943.533794][ T1143] translate_table+0xcb4/0x17d0 [ 943.538931][ T1143] ? compat_do_ipt_get_ctl+0x910/0x910 [ 943.544431][ T1143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 943.550901][ T1143] ? _copy_from_user+0x12c/0x1a0 [ 943.555868][ T1143] do_ipt_set_ctl+0x2fe/0x4c2 [ 943.560808][ T1143] ? compat_do_ipt_set_ctl+0x170/0x170 [ 943.566486][ T1143] ? mutex_unlock+0xd/0x10 [ 943.570986][ T1143] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 943.578151][ T1143] nf_setsockopt+0x77/0xd0 [ 943.582600][ T1143] ip_setsockopt+0xdf/0x100 [ 943.587356][ T1143] udp_setsockopt+0x68/0xb0 [ 943.591902][ T1143] sock_common_setsockopt+0x94/0xd0 [ 943.597453][ T1143] __sys_setsockopt+0x261/0x4c0 [ 943.602426][ T1143] ? sock_create_kern+0x50/0x50 [ 943.607499][ T1143] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 943.613092][ T1143] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 943.618831][ T1143] ? do_syscall_64+0x26/0x790 [ 943.623530][ T1143] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 943.629850][ T1143] ? do_syscall_64+0x26/0x790 [ 943.634548][ T1143] __x64_sys_setsockopt+0xbe/0x150 [ 943.640042][ T1143] do_syscall_64+0xfa/0x790 [ 943.644570][ T1143] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 943.650654][ T1143] RIP: 0033:0x441c69 [ 943.654554][ T1143] Code: 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 64 3a 20 76 65 72 73 69 6f 6e 20 25 73 2c 20 63 6f 6e 66 69 67 20 76 61 6c 69 <64> 61 74 69 6f 6e 20 72 75 6e 20 28 6c 65 76 65 6c 20 25 64 29 2c [ 943.674455][ T1143] RSP: 002b:00007ffd45dfbde8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 943.683127][ T1143] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c69 [ 943.691386][ T1143] RDX: 0000000000000040 RSI: ffffff0f00000000 RDI: 0000000000000003 [ 943.708388][ T1143] RBP: 00000000000c2f79 R08: 0000000000000418 R09: 00000000004002c8 [ 943.716639][ T1143] R10: 0000000020000380 R11: 0000000000000246 R12: 00000000004029e0 [ 943.724623][ T1143] R13: 0000000000402a70 R14: 0000000000000000 R15: 0000000000000000 [ 943.732839][ T1143] INFO: task syz-executor512:9705 blocked for more than 144 seconds. [ 943.741072][ T1143] Not tainted 5.5.0-syzkaller #0 [ 943.746686][ T1143] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 943.755350][ T1143] syz-executor512 D28072 9705 9687 0x00000004 [ 943.761872][ T1143] Call Trace: [ 943.765178][ T1143] __schedule+0x934/0x1f90 [ 943.769787][ T1143] ? __sched_text_start+0x8/0x8 [ 943.774642][ T1143] ? lock_downgrade+0x920/0x920 [ 943.779668][ T1143] ? rwlock_bug.part.0+0x90/0x90 [ 943.786027][ T1143] schedule+0xdc/0x2b0 [ 943.790279][ T1143] schedule_preempt_disabled+0x13/0x20 [ 943.795748][ T1143] __mutex_lock+0x7ab/0x13c0 [ 943.800529][ T1143] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 943.807204][ T1143] ? mutex_trylock+0x2d0/0x2d0 [ 943.811972][ T1143] ? mark_lock+0xc2/0x1220 [ 943.816586][ T1143] ? find_held_lock+0x35/0x130 [ 943.821361][ T1143] ? xt_find_match+0x1e8/0x280 [ 943.826144][ T1143] mutex_lock_nested+0x16/0x20 [ 943.831098][ T1143] ? mutex_lock_nested+0x16/0x20 [ 943.836061][ T1143] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 943.843529][ T1143] hashlimit_mt_check+0xa4/0xd0 [ 943.848556][ T1143] ? hashlimit_mt_check_common.isra.0+0x1500/0x1500 [ 943.855152][ T1143] xt_check_match+0x280/0x690 [ 943.860012][ T1143] ? xt_check_target+0x690/0x690 [ 943.864969][ T1143] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 943.871408][ T1143] ? mutex_unlock+0xd/0x10 [ 943.875836][ T1143] ? xt_find_match+0x73/0x280 [ 943.880701][ T1143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 943.887113][ T1143] find_check_entry.isra.0+0x32f/0x920 [ 943.892598][ T1143] ? ipt_do_table+0x1b80/0x1b80 [ 943.897625][ T1143] ? lockdep_hardirqs_on+0x421/0x5e0 [ 943.902922][ T1143] ? trace_hardirqs_on+0x67/0x240 [ 943.908117][ T1143] ? kvfree+0x4a/0x60 [ 943.912120][ T1143] translate_table+0xcb4/0x17d0 [ 943.917171][ T1143] ? compat_do_ipt_get_ctl+0x910/0x910 [ 943.922643][ T1143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 943.929239][ T1143] ? _copy_from_user+0x12c/0x1a0 [ 943.934329][ T1143] do_ipt_set_ctl+0x2fe/0x4c2 [ 943.939294][ T1143] ? compat_do_ipt_set_ctl+0x170/0x170 [ 943.944793][ T1143] ? mutex_unlock+0xd/0x10 [ 943.949401][ T1143] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 943.955398][ T1143] nf_setsockopt+0x77/0xd0 [ 943.960006][ T1143] ip_setsockopt+0xdf/0x100 [ 943.964532][ T1143] udp_setsockopt+0x68/0xb0 [ 943.970127][ T1143] sock_common_setsockopt+0x94/0xd0 [ 943.975343][ T1143] __sys_setsockopt+0x261/0x4c0 [ 943.980385][ T1143] ? sock_create_kern+0x50/0x50 [ 943.985239][ T1143] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 943.990985][ T1143] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 943.996603][ T1143] ? do_syscall_64+0x26/0x790 [ 944.001286][ T1143] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 944.007536][ T1143] ? do_syscall_64+0x26/0x790 [ 944.012232][ T1143] __x64_sys_setsockopt+0xbe/0x150 [ 944.017523][ T1143] do_syscall_64+0xfa/0x790 [ 944.022041][ T1143] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 944.028174][ T1143] RIP: 0033:0x441c69 [ 944.032091][ T1143] Code: 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 64 3a 20 76 65 72 73 69 6f 6e 20 25 73 2c 20 63 6f 6e 66 69 67 20 76 61 6c 69 <64> 61 74 69 6f 6e 20 72 75 6e 20 28 6c 65 76 65 6c 20 25 64 29 2c [ 944.051955][ T1143] RSP: 002b:00007ffd45dfbde8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 944.060597][ T1143] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c69 [ 944.068815][ T1143] RDX: 0000000000000040 RSI: ffffff0f00000000 RDI: 0000000000000003 [ 944.077114][ T1143] RBP: 00000000000c2f69 R08: 0000000000000418 R09: 00000000004002c8 [ 944.085203][ T1143] R10: 0000000020000380 R11: 0000000000000246 R12: 00000000004029e0 [ 944.093424][ T1143] R13: 0000000000402a70 R14: 0000000000000000 R15: 0000000000000000 [ 944.102643][ T1143] INFO: task syz-executor512:9706 blocked for more than 144 seconds. [ 944.110949][ T1143] Not tainted 5.5.0-syzkaller #0 [ 944.116638][ T1143] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 944.125321][ T1143] syz-executor512 D28072 9706 9692 0x00000004 [ 944.131892][ T1143] Call Trace: [ 944.135201][ T1143] __schedule+0x934/0x1f90 [ 944.139801][ T1143] ? __sched_text_start+0x8/0x8 [ 944.144654][ T1143] ? lock_downgrade+0x920/0x920 [ 944.149695][ T1143] ? rwlock_bug.part.0+0x90/0x90 [ 944.154654][ T1143] schedule+0xdc/0x2b0 [ 944.158895][ T1143] schedule_preempt_disabled+0x13/0x20 [ 944.164363][ T1143] __mutex_lock+0x7ab/0x13c0 [ 944.169250][ T1143] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 944.175774][ T1143] ? mutex_trylock+0x2d0/0x2d0 [ 944.180787][ T1143] ? mark_lock+0xc2/0x1220 [ 944.185246][ T1143] ? find_held_lock+0x35/0x130 [ 944.190237][ T1143] ? xt_find_match+0x1e8/0x280 [ 944.195023][ T1143] mutex_lock_nested+0x16/0x20 [ 944.199954][ T1143] ? mutex_lock_nested+0x16/0x20 [ 944.204901][ T1143] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 944.211581][ T1143] hashlimit_mt_check+0xa4/0xd0 [ 944.216677][ T1143] ? hashlimit_mt_check_common.isra.0+0x1500/0x1500 [ 944.223299][ T1143] xt_check_match+0x280/0x690 [ 944.229154][ T1143] ? xt_check_target+0x690/0x690 [ 944.234115][ T1143] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 944.240551][ T1143] ? mutex_unlock+0xd/0x10 [ 944.244979][ T1143] ? xt_find_match+0x73/0x280 [ 944.249854][ T1143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 944.256111][ T1143] find_check_entry.isra.0+0x32f/0x920 [ 944.261806][ T1143] ? ipt_do_table+0x1b80/0x1b80 [ 944.266831][ T1143] ? lockdep_hardirqs_on+0x421/0x5e0 [ 944.272128][ T1143] ? trace_hardirqs_on+0x67/0x240 [ 944.277324][ T1143] ? kvfree+0x4a/0x60 [ 944.281330][ T1143] translate_table+0xcb4/0x17d0 [ 944.286389][ T1143] ? compat_do_ipt_get_ctl+0x910/0x910 [ 944.291866][ T1143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 944.298269][ T1143] ? _copy_from_user+0x12c/0x1a0 [ 944.303222][ T1143] do_ipt_set_ctl+0x2fe/0x4c2 [ 944.308084][ T1143] ? compat_do_ipt_set_ctl+0x170/0x170 [ 944.313573][ T1143] ? mutex_unlock+0xd/0x10 [ 944.318161][ T1143] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 944.324155][ T1143] nf_setsockopt+0x77/0xd0 [ 944.328772][ T1143] ip_setsockopt+0xdf/0x100 [ 944.333289][ T1143] udp_setsockopt+0x68/0xb0 [ 944.337966][ T1143] sock_common_setsockopt+0x94/0xd0 [ 944.343183][ T1143] __sys_setsockopt+0x261/0x4c0 [ 944.348225][ T1143] ? sock_create_kern+0x50/0x50 [ 944.353084][ T1143] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 944.359812][ T1143] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 944.365295][ T1143] ? do_syscall_64+0x26/0x790 [ 944.370237][ T1143] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 944.376467][ T1143] ? do_syscall_64+0x26/0x790 [ 944.381170][ T1143] __x64_sys_setsockopt+0xbe/0x150 [ 944.386573][ T1143] do_syscall_64+0xfa/0x790 [ 944.391135][ T1143] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 944.397258][ T1143] RIP: 0033:0x441c69 [ 944.401164][ T1143] Code: 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 64 3a 20 76 65 72 73 69 6f 6e 20 25 73 2c 20 63 6f 6e 66 69 67 20 76 61 6c 69 <64> 61 74 69 6f 6e 20 72 75 6e 20 28 6c 65 76 65 6c 20 25 64 29 2c [ 944.421118][ T1143] RSP: 002b:00007ffd45dfbde8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 944.429754][ T1143] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c69 [ 944.438000][ T1143] RDX: 0000000000000040 RSI: ffffff0f00000000 RDI: 0000000000000003 [ 944.445991][ T1143] RBP: 00000000000c2f7c R08: 0000000000000418 R09: 00000000004002c8 [ 944.454202][ T1143] R10: 0000000020000380 R11: 0000000000000246 R12: 00000000004029e0 [ 944.462672][ T1143] R13: 0000000000402a70 R14: 0000000000000000 R15: 0000000000000000 [ 944.470856][ T1143] INFO: task syz-executor512:9707 blocked for more than 144 seconds. [ 944.479157][ T1143] Not tainted 5.5.0-syzkaller #0 [ 944.484628][ T1143] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 944.494477][ T1143] syz-executor512 D28072 9707 9693 0x00004004 [ 944.501103][ T1143] Call Trace: [ 944.504418][ T1143] __schedule+0x934/0x1f90 [ 944.509117][ T1143] ? __sched_text_start+0x8/0x8 [ 944.514030][ T1143] ? lock_downgrade+0x920/0x920 [ 944.519175][ T1143] ? rwlock_bug.part.0+0x90/0x90 [ 944.524150][ T1143] schedule+0xdc/0x2b0 [ 944.528439][ T1143] schedule_preempt_disabled+0x13/0x20 [ 944.533911][ T1143] __mutex_lock+0x7ab/0x13c0 [ 944.538708][ T1143] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 944.545378][ T1143] ? mutex_trylock+0x2d0/0x2d0 [ 944.550390][ T1143] ? mark_lock+0xc2/0x1220 [ 944.554997][ T1143] ? find_held_lock+0x35/0x130 [ 944.560054][ T1143] ? xt_find_match+0x1e8/0x280 [ 944.564991][ T1143] mutex_lock_nested+0x16/0x20 [ 944.570016][ T1143] ? mutex_lock_nested+0x16/0x20 [ 944.574984][ T1143] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 944.581581][ T1143] hashlimit_mt_check+0xa4/0xd0 [ 944.586657][ T1143] ? hashlimit_mt_check_common.isra.0+0x1500/0x1500 [ 944.593274][ T1143] xt_check_match+0x280/0x690 [ 944.598278][ T1143] ? xt_check_target+0x690/0x690 [ 944.604747][ T1143] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 944.611262][ T1143] ? mutex_unlock+0xd/0x10 [ 944.615706][ T1143] ? xt_find_match+0x73/0x280 [ 944.621625][ T1143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 944.628058][ T1143] find_check_entry.isra.0+0x32f/0x920 [ 944.633560][ T1143] ? ipt_do_table+0x1b80/0x1b80 [ 944.638703][ T1143] ? lockdep_hardirqs_on+0x421/0x5e0 [ 944.644009][ T1143] ? trace_hardirqs_on+0x67/0x240 [ 944.649232][ T1143] ? kvfree+0x4a/0x60 [ 944.653359][ T1143] translate_table+0xcb4/0x17d0 [ 944.658592][ T1143] ? compat_do_ipt_get_ctl+0x910/0x910 [ 944.664100][ T1143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 944.670611][ T1143] ? _copy_from_user+0x12c/0x1a0 [ 944.675576][ T1143] do_ipt_set_ctl+0x2fe/0x4c2 [ 944.680460][ T1143] ? compat_do_ipt_set_ctl+0x170/0x170 [ 944.685945][ T1143] ? mutex_unlock+0xd/0x10 [ 944.690535][ T1143] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 944.696697][ T1143] nf_setsockopt+0x77/0xd0 [ 944.701128][ T1143] ip_setsockopt+0xdf/0x100 [ 944.705647][ T1143] udp_setsockopt+0x68/0xb0 [ 944.710328][ T1143] sock_common_setsockopt+0x94/0xd0 [ 944.715975][ T1143] __sys_setsockopt+0x261/0x4c0 [ 944.721036][ T1143] ? sock_create_kern+0x50/0x50 [ 944.725892][ T1143] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 944.731628][ T1143] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 944.737833][ T1143] ? do_syscall_64+0x26/0x790 [ 944.742529][ T1143] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 944.749684][ T1143] ? do_syscall_64+0x26/0x790 [ 944.754379][ T1143] __x64_sys_setsockopt+0xbe/0x150 [ 944.764834][ T1143] do_syscall_64+0xfa/0x790 [ 944.769510][ T1143] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 944.775421][ T1143] RIP: 0033:0x441c69 [ 944.779582][ T1143] Code: 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 64 3a 20 76 65 72 73 69 6f 6e 20 25 73 2c 20 63 6f 6e 66 69 67 20 76 61 6c 69 <64> 61 74 69 6f 6e 20 72 75 6e 20 28 6c 65 76 65 6c 20 25 64 29 2c [ 944.799435][ T1143] RSP: 002b:00007ffd45dfbde8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 944.808030][ T1143] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c69 [ 944.816007][ T1143] RDX: 0000000000000040 RSI: ffffff0f00000000 RDI: 0000000000000003 [ 944.824190][ T1143] RBP: 00000000000c2f7e R08: 0000000000000418 R09: 00000000004002c8 [ 944.832325][ T1143] R10: 0000000020000380 R11: 0000000000000246 R12: 00000000004029e0 [ 944.840458][ T1143] R13: 0000000000402a70 R14: 0000000000000000 R15: 0000000000000000 [ 944.848633][ T1143] INFO: task syz-executor512:9708 blocked for more than 145 seconds. [ 944.856856][ T1143] Not tainted 5.5.0-syzkaller #0 [ 944.862306][ T1143] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 944.871156][ T1143] syz-executor512 D28072 9708 9689 0x00000004 [ 944.878578][ T1143] Call Trace: [ 944.881886][ T1143] __schedule+0x934/0x1f90 [ 944.886479][ T1143] ? __sched_text_start+0x8/0x8 [ 944.891333][ T1143] ? lock_downgrade+0x920/0x920 [ 944.896355][ T1143] ? rwlock_bug.part.0+0x90/0x90 [ 944.901325][ T1143] schedule+0xdc/0x2b0 [ 944.905410][ T1143] schedule_preempt_disabled+0x13/0x20 [ 944.911122][ T1143] __mutex_lock+0x7ab/0x13c0 [ 944.915735][ T1143] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 944.922442][ T1143] ? mutex_trylock+0x2d0/0x2d0 [ 944.927606][ T1143] ? mark_lock+0xc2/0x1220 [ 944.932074][ T1143] ? find_held_lock+0x35/0x130 [ 944.937279][ T1143] ? xt_find_match+0x1e8/0x280 [ 944.942069][ T1143] mutex_lock_nested+0x16/0x20 [ 944.947174][ T1143] ? mutex_lock_nested+0x16/0x20 [ 944.952120][ T1143] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 944.958810][ T1143] hashlimit_mt_check+0xa4/0xd0 [ 944.963670][ T1143] ? hashlimit_mt_check_common.isra.0+0x1500/0x1500 [ 944.970590][ T1143] xt_check_match+0x280/0x690 [ 944.975280][ T1143] ? xt_check_target+0x690/0x690 [ 944.980681][ T1143] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 944.987247][ T1143] ? mutex_unlock+0xd/0x10 [ 944.991669][ T1143] ? xt_find_match+0x73/0x280 [ 944.996875][ T1143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 945.003156][ T1143] find_check_entry.isra.0+0x32f/0x920 [ 945.010133][ T1143] ? ipt_do_table+0x1b80/0x1b80 [ 945.015023][ T1143] ? lockdep_hardirqs_on+0x421/0x5e0 [ 945.020704][ T1143] ? trace_hardirqs_on+0x67/0x240 [ 945.025744][ T1143] ? kvfree+0x4a/0x60 [ 945.030191][ T1143] translate_table+0xcb4/0x17d0 [ 945.035089][ T1143] ? compat_do_ipt_get_ctl+0x910/0x910 [ 945.040916][ T1143] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 945.047468][ T1143] ? _copy_from_user+0x12c/0x1a0 [ 945.052423][ T1143] do_ipt_set_ctl+0x2fe/0x4c2 [ 945.057429][ T1143] ? compat_do_ipt_set_ctl+0x170/0x170 [ 945.062919][ T1143] ? mutex_unlock+0xd/0x10 [ 945.067647][ T1143] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 945.073639][ T1143] nf_setsockopt+0x77/0xd0 [ 945.078383][ T1143] ip_setsockopt+0xdf/0x100 [ 945.082897][ T1143] udp_setsockopt+0x68/0xb0 [ 945.087718][ T1143] sock_common_setsockopt+0x94/0xd0 [ 945.092953][ T1143] __sys_setsockopt+0x261/0x4c0 [ 945.098324][ T1143] ? sock_create_kern+0x50/0x50 [ 945.103219][ T1143] ? up_read+0x1cd/0x810 [ 945.107856][ T1143] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 945.113324][ T1143] ? do_syscall_64+0x26/0x790 [ 945.118350][ T1143] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 945.124439][ T1143] ? do_syscall_64+0x26/0x790 [ 945.129672][ T1143] __x64_sys_setsockopt+0xbe/0x150 [ 945.134804][ T1143] do_syscall_64+0xfa/0x790 [ 945.140679][ T1143] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 945.146869][ T1143] RIP: 0033:0x441c69 [ 945.150769][ T1143] Code: 64 0a 00 00 00 00 00 00 00 72 73 79 73 6c 6f 67 64 3a 20 76 65 72 73 69 6f 6e 20 25 73 2c 20 63 6f 6e 66 69 67 20 76 61 6c 69 <64> 61 74 69 6f 6e 20 72 75 6e 20 28 6c 65 76 65 6c 20 25 64 29 2c [ 945.170828][ T1143] RSP: 002b:00007ffd45dfbde8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 945.179685][ T1143] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c69 [ 945.188108][ T1143] RDX: 0000000000000040 RSI: ffffff0f00000000 RDI: 0000000000000003 [ 945.196102][ T1143] RBP: 00000000000c2f83 R08: 0000000000000418 R09: 00000000004002c8 [ 945.204844][ T1143] R10: 0000000020000380 R11: 0000000000000246 R12: 00000000004029e0 [ 945.213277][ T1143] R13: 0000000000402a70 R14: 0000000000000000 R15: 0000000000000000 [ 945.221638][ T1143] [ 945.221638][ T1143] Showing all locks held in the system: [ 945.229897][ T1143] 1 lock held by khungtaskd/1143: [ 945.234927][ T1143] #0: ffffffff89bac200 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 [ 945.244754][ T1143] 2 locks held by kworker/1:55/2878: [ 945.250507][ T1143] 1 lock held by rsyslogd/9565: [ 945.255467][ T1143] #0: ffff88809b682160 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 945.264884][ T1143] 2 locks held by getty/9655: [ 945.270825][ T1143] #0: ffff888094d06090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 945.280217][ T1143] #1: ffffc90005a8b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 945.290230][ T1143] 2 locks held by getty/9656: [ 945.294909][ T1143] #0: ffff888096160090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 945.304451][ T1143] #1: ffffc90005a7b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 945.315016][ T1143] 2 locks held by getty/9657: [ 945.320064][ T1143] #0: ffff888095db2090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 945.329565][ T1143] #1: ffffc90005aab2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 945.339565][ T1143] 2 locks held by getty/9658: [ 945.344238][ T1143] #0: ffff888095db3090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 945.353546][ T1143] #1: ffffc90005a9b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 945.363567][ T1143] 2 locks held by getty/9659: [ 945.368695][ T1143] #0: ffff88809bda5090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 945.378084][ T1143] #1: ffffc90005a0b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 945.388090][ T1143] 2 locks held by getty/9660: [ 945.392767][ T1143] #0: ffff8880a2930090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 945.403036][ T1143] #1: ffffc90005a4b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 945.412956][ T1143] 2 locks held by getty/9661: [ 945.418240][ T1143] #0: ffff8880975ae090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 945.427740][ T1143] #1: ffffc900059eb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 945.437779][ T1143] 1 lock held by syz-executor512/9698: [ 945.443246][ T1143] #0: ffffffff8a7d0e20 (hashlimit_mutex){+.+.}, at: htable_put+0x21/0x220 [ 945.452366][ T1143] 1 lock held by syz-executor512/9704: [ 945.458256][ T1143] #0: ffffffff8a7d0e20 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 945.469428][ T1143] 1 lock held by syz-executor512/9705: [ 945.474903][ T1143] #0: ffffffff8a7d0e20 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 945.486093][ T1143] 1 lock held by syz-executor512/9706: [ 945.491996][ T1143] #0: ffffffff8a7d0e20 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 945.509439][ T1143] 1 lock held by syz-executor512/9707: [ 945.514899][ T1143] #0: ffffffff8a7d0e20 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 945.526218][ T1143] 1 lock held by syz-executor512/9708: [ 945.531801][ T1143] #0: ffffffff8a7d0e20 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 945.544147][ T1143] [ 945.546852][ T1143] ============================================= [ 945.546852][ T1143] [ 945.555279][ T1143] NMI backtrace for cpu 0 [ 945.559823][ T1143] CPU: 0 PID: 1143 Comm: khungtaskd Not tainted 5.5.0-syzkaller #0 [ 945.567719][ T1143] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 945.579084][ T1143] Call Trace: [ 945.582451][ T1143] dump_stack+0x197/0x210 [ 945.586908][ T1143] nmi_cpu_backtrace.cold+0x70/0xb2 [ 945.592189][ T1143] ? vprintk_func+0x86/0x189 [ 945.596848][ T1143] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 945.602508][ T1143] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 945.608521][ T1143] arch_trigger_cpumask_backtrace+0x14/0x20 [ 945.614439][ T1143] watchdog+0xb11/0x10c0 [ 945.618728][ T1143] kthread+0x361/0x430 [ 945.622827][ T1143] ? reset_hung_task_detector+0x30/0x30 [ 945.628397][ T1143] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 945.634149][ T1143] ret_from_fork+0x24/0x30 [ 945.645136][ T1143] Sending NMI from CPU 0 to CPUs 1: [ 945.650675][ C1] NMI backtrace for cpu 1 [ 945.650682][ C1] CPU: 1 PID: 2878 Comm: kworker/1:55 Not tainted 5.5.0-syzkaller #0 [ 945.650688][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 945.650693][ C1] Workqueue: events_power_efficient htable_gc [ 945.650699][ C1] RIP: 0010:lock_is_held_type+0x254/0x320 [ 945.650712][ C1] Code: 83 c0 03 38 d0 7c 08 84 d2 0f 85 d3 00 00 00 48 c7 c0 78 b0 b3 89 48 ba 00 00 00 00 00 fc ff df c7 83 94 08 00 00 00 00 00 00 <48> c1 e8 03 80 3c 10 00 0f 85 88 00 00 00 48 83 3d fe 39 59 08 00 [ 945.650716][ C1] RSP: 0018:ffffc900096b7c18 EFLAGS: 00000046 [ 945.650724][ C1] RAX: ffffffff89b3b078 RBX: ffff88809f3e44c0 RCX: ffff88809f3e4d58 [ 945.650729][ C1] RDX: dffffc0000000000 RSI: ffffffff89bac180 RDI: ffff88809f3e4d54 [ 945.650735][ C1] RBP: ffffc900096b7c60 R08: 1ffffffff16a2f82 R09: fffffbfff16a2f83 [ 945.650740][ C1] R10: fffffbfff16a2f82 R11: ffffffff8b517c17 R12: 0000000000000000 [ 945.650746][ C1] R13: ffff88809f3e4d80 R14: ffffffff89bac180 R15: 0000000000000002 [ 945.650752][ C1] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 945.650756][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 945.650762][ C1] CR2: 0000000020000380 CR3: 000000009f772000 CR4: 00000000001406e0 [ 945.650767][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 945.650773][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 945.650775][ C1] Call Trace: [ 945.650779][ C1] ___might_sleep+0x205/0x2c0 [ 945.650783][ C1] htable_selective_cleanup+0x245/0x340 [ 945.650787][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 945.650790][ C1] ? trace_hardirqs_on+0x67/0x240 [ 945.650793][ C1] htable_gc+0x21/0xb0 [ 945.650797][ C1] process_one_work+0xa05/0x17a0 [ 945.650800][ C1] ? mark_held_locks+0xf0/0xf0 [ 945.650804][ C1] ? pwq_dec_nr_in_flight+0x320/0x320 [ 945.650808][ C1] ? lock_acquire+0x190/0x410 [ 945.650811][ C1] worker_thread+0x98/0xe40 [ 945.650814][ C1] kthread+0x361/0x430 [ 945.650818][ C1] ? process_one_work+0x17a0/0x17a0 [ 945.650822][ C1] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 945.650825][ C1] ret_from_fork+0x24/0x30 [ 945.652889][ T1143] Kernel panic - not syncing: hung_task: blocked tasks [ 945.869121][ T1143] CPU: 0 PID: 1143 Comm: khungtaskd Not tainted 5.5.0-syzkaller #0 [ 945.877027][ T1143] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 945.887095][ T1143] Call Trace: [ 945.890397][ T1143] dump_stack+0x197/0x210 [ 945.894823][ T1143] panic+0x2e3/0x75c [ 945.898727][ T1143] ? add_taint.cold+0x16/0x16 [ 945.903432][ T1143] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 945.909083][ T1143] ? ___preempt_schedule+0x16/0x18 [ 945.914325][ T1143] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 945.920633][ T1143] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b [ 945.926809][ T1143] ? nmi_trigger_cpumask_backtrace+0x256/0x28b [ 945.932999][ T1143] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 945.939175][ T1143] watchdog+0xb22/0x10c0 [ 945.943454][ T1143] kthread+0x361/0x430 [ 945.947550][ T1143] ? reset_hung_task_detector+0x30/0x30 [ 945.953218][ T1143] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 945.958951][ T1143] ret_from_fork+0x24/0x30 [ 945.965075][ T1143] Kernel Offset: disabled [ 945.969450][ T1143] Rebooting in 86400 seconds..