[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 96.342230][ T26] audit: type=1400 audit(1581753471.263:37): avc: denied { watch } for pid=10513 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [ 96.394276][ T26] audit: type=1400 audit(1581753471.273:38): avc: denied { watch } for pid=10513 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 99.724403][ T26] kauditd_printk_skb: 2 callbacks suppressed [ 99.724419][ T26] audit: type=1400 audit(1581753474.653:41): avc: denied { map } for pid=10606 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.161' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 771.310477][ T26] audit: type=1400 audit(1581754146.233:42): avc: denied { map } for pid=10618 comm="syz-executor870" path="/root/syz-executor870079596" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 930.122431][ T1141] INFO: task syz-executor870:10625 blocked for more than 143 seconds. [ 930.130792][ T1141] Not tainted 5.6.0-rc1-syzkaller #0 [ 930.138024][ T1141] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 930.147950][ T1141] syz-executor870 D27248 10625 10624 0x00004004 [ 930.159544][ T1141] Call Trace: [ 930.163241][ T1141] __schedule+0x934/0x1f90 [ 930.167686][ T1141] ? __sched_text_start+0x8/0x8 [ 930.172949][ T1141] ? lock_downgrade+0x920/0x920 [ 930.177809][ T1141] ? rwlock_bug.part.0+0x90/0x90 [ 930.183087][ T1141] schedule+0xdc/0x2b0 [ 930.187164][ T1141] schedule_preempt_disabled+0x13/0x20 [ 930.193019][ T1141] __mutex_lock+0x7ab/0x13c0 [ 930.197714][ T1141] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.204628][ T1141] ? mutex_trylock+0x2d0/0x2d0 [ 930.209408][ T1141] ? mark_held_locks+0xf0/0xf0 [ 930.214547][ T1141] ? mark_held_locks+0xf0/0xf0 [ 930.219415][ T1141] ? __kasan_check_read+0x11/0x20 [ 930.224888][ T1141] ? mark_lock+0xc2/0x1220 [ 930.229766][ T1141] mutex_lock_nested+0x16/0x20 [ 930.234960][ T1141] ? mutex_lock_nested+0x16/0x20 [ 930.239918][ T1141] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.246689][ T1141] hashlimit_mt_check_v1+0x325/0x3ab [ 930.251988][ T1141] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 930.257814][ T1141] ? lock_downgrade+0x920/0x920 [ 930.263257][ T1141] ? xt_find_match+0xa6/0x280 [ 930.267950][ T1141] ? mutex_trylock+0x2d0/0x2d0 [ 930.274073][ T1141] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 930.280237][ T1141] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 930.286089][ T1141] xt_check_match+0x280/0x690 [ 930.290773][ T1141] ? xt_check_target+0x690/0x690 [ 930.296141][ T1141] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 930.302729][ T1141] ? mutex_unlock+0xd/0x10 [ 930.307151][ T1141] ? xt_find_match+0x73/0x280 [ 930.311841][ T1141] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.318872][ T1141] find_check_entry.isra.0+0x32f/0x920 [ 930.324689][ T1141] ? ipt_do_table+0x1b80/0x1b80 [ 930.329558][ T1141] ? lockdep_hardirqs_on+0x421/0x5e0 [ 930.335249][ T1141] ? trace_hardirqs_on+0x67/0x240 [ 930.340346][ T1141] ? kvfree+0x4a/0x60 [ 930.344705][ T1141] translate_table+0xcb4/0x17d0 [ 930.349592][ T1141] ? compat_do_ipt_get_ctl+0x910/0x910 [ 930.355399][ T1141] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.361698][ T1141] ? _copy_from_user+0x12c/0x1a0 [ 930.367217][ T1141] do_ipt_set_ctl+0x2fe/0x4c2 [ 930.371935][ T1141] ? compat_do_ipt_set_ctl+0x170/0x170 [ 930.377832][ T1141] ? mutex_unlock+0xd/0x10 [ 930.382614][ T1141] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 930.389134][ T1141] nf_setsockopt+0x77/0xd0 [ 930.393942][ T1141] ip_setsockopt+0xdf/0x100 [ 930.398457][ T1141] tcp_setsockopt+0x8f/0xe0 [ 930.404434][ T1141] sock_common_setsockopt+0x94/0xd0 [ 930.409652][ T1141] __sys_setsockopt+0x261/0x4c0 [ 930.414853][ T1141] ? sock_create_kern+0x50/0x50 [ 930.419708][ T1141] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 930.425668][ T1141] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 930.431134][ T1141] ? do_syscall_64+0x26/0x790 [ 930.436148][ T1141] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.442238][ T1141] ? do_syscall_64+0x26/0x790 [ 930.447326][ T1141] __x64_sys_setsockopt+0xbe/0x150 [ 930.452772][ T1141] do_syscall_64+0xfa/0x790 [ 930.457290][ T1141] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.463527][ T1141] RIP: 0033:0x441c39 [ 930.467424][ T1141] 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 [ 930.487550][ T1141] RSP: 002b:00007ffcec7c8618 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 930.496269][ T1141] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 930.504551][ T1141] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 930.512831][ T1141] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 930.520959][ T1141] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 930.529488][ T1141] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 930.538813][ T1141] INFO: task syz-executor870:10627 blocked for more than 143 seconds. [ 930.547334][ T1141] Not tainted 5.6.0-rc1-syzkaller #0 [ 930.553382][ T1141] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 930.562051][ T1141] syz-executor870 D28072 10627 10619 0x00000004 [ 930.568737][ T1141] Call Trace: [ 930.572047][ T1141] __schedule+0x934/0x1f90 [ 930.576858][ T1141] ? __sched_text_start+0x8/0x8 [ 930.581712][ T1141] ? lock_downgrade+0x920/0x920 [ 930.586877][ T1141] ? rwlock_bug.part.0+0x90/0x90 [ 930.591834][ T1141] schedule+0xdc/0x2b0 [ 930.596240][ T1141] schedule_preempt_disabled+0x13/0x20 [ 930.601708][ T1141] __mutex_lock+0x7ab/0x13c0 [ 930.606637][ T1141] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.613434][ T1141] ? mutex_trylock+0x2d0/0x2d0 [ 930.618205][ T1141] ? mark_held_locks+0xf0/0xf0 [ 930.623378][ T1141] ? mark_held_locks+0xf0/0xf0 [ 930.628148][ T1141] ? __kasan_check_read+0x11/0x20 [ 930.633483][ T1141] ? mark_lock+0xc2/0x1220 [ 930.637916][ T1141] mutex_lock_nested+0x16/0x20 [ 930.642977][ T1141] ? mutex_lock_nested+0x16/0x20 [ 930.647917][ T1141] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.654849][ T1141] hashlimit_mt_check_v1+0x325/0x3ab [ 930.660149][ T1141] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 930.666970][ T1141] ? lock_downgrade+0x920/0x920 [ 930.671834][ T1141] ? xt_find_match+0xa6/0x280 [ 930.676936][ T1141] ? mutex_trylock+0x2d0/0x2d0 [ 930.681725][ T1141] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 930.688298][ T1141] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 930.694315][ T1141] xt_check_match+0x280/0x690 [ 930.699000][ T1141] ? xt_check_target+0x690/0x690 [ 930.704277][ T1141] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 930.710668][ T1141] ? mutex_unlock+0xd/0x10 [ 930.715464][ T1141] ? xt_find_match+0x73/0x280 [ 930.720161][ T1141] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.726741][ T1141] find_check_entry.isra.0+0x32f/0x920 [ 930.732224][ T1141] ? ipt_do_table+0x1b80/0x1b80 [ 930.737400][ T1141] ? lockdep_hardirqs_on+0x421/0x5e0 [ 930.742987][ T1141] ? trace_hardirqs_on+0x67/0x240 [ 930.748022][ T1141] ? kvfree+0x4a/0x60 [ 930.752021][ T1141] translate_table+0xcb4/0x17d0 [ 930.757433][ T1141] ? compat_do_ipt_get_ctl+0x910/0x910 [ 930.763343][ T1141] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.769652][ T1141] ? _copy_from_user+0x12c/0x1a0 [ 930.775055][ T1141] do_ipt_set_ctl+0x2fe/0x4c2 [ 930.779754][ T1141] ? compat_do_ipt_set_ctl+0x170/0x170 [ 930.785595][ T1141] ? mutex_unlock+0xd/0x10 [ 930.790019][ T1141] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 930.797400][ T1141] nf_setsockopt+0x77/0xd0 [ 930.801843][ T1141] ip_setsockopt+0xdf/0x100 [ 930.806715][ T1141] tcp_setsockopt+0x8f/0xe0 [ 930.811236][ T1141] sock_common_setsockopt+0x94/0xd0 [ 930.816796][ T1141] __sys_setsockopt+0x261/0x4c0 [ 930.821663][ T1141] ? sock_create_kern+0x50/0x50 [ 930.827146][ T1141] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 930.833051][ T1141] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 930.838589][ T1141] ? do_syscall_64+0x26/0x790 [ 930.843696][ T1141] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.849775][ T1141] ? do_syscall_64+0x26/0x790 [ 930.854826][ T1141] __x64_sys_setsockopt+0xbe/0x150 [ 930.859952][ T1141] do_syscall_64+0xfa/0x790 [ 930.864874][ T1141] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.870772][ T1141] RIP: 0033:0x441c39 [ 930.874993][ T1141] 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 [ 930.894933][ T1141] RSP: 002b:00007ffcec7c8618 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 930.904079][ T1141] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 930.912081][ T1141] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 930.920401][ T1141] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 930.929696][ T1141] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 930.937982][ T1141] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 930.946266][ T1141] INFO: task syz-executor870:10628 blocked for more than 144 seconds. [ 930.954668][ T1141] Not tainted 5.6.0-rc1-syzkaller #0 [ 930.960464][ T1141] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 930.969428][ T1141] syz-executor870 D27640 10628 10620 0x00004004 [ 930.976055][ T1141] Call Trace: [ 930.979377][ T1141] __schedule+0x934/0x1f90 [ 930.984120][ T1141] ? __sched_text_start+0x8/0x8 [ 930.988987][ T1141] ? lock_downgrade+0x920/0x920 [ 930.994255][ T1141] ? rwlock_bug.part.0+0x90/0x90 [ 930.999233][ T1141] schedule+0xdc/0x2b0 [ 931.003721][ T1141] schedule_preempt_disabled+0x13/0x20 [ 931.009193][ T1141] __mutex_lock+0x7ab/0x13c0 [ 931.014136][ T1141] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.020680][ T1141] ? mutex_trylock+0x2d0/0x2d0 [ 931.025908][ T1141] ? mark_held_locks+0xf0/0xf0 [ 931.030689][ T1141] ? mark_held_locks+0xf0/0xf0 [ 931.035771][ T1141] ? __kasan_check_read+0x11/0x20 [ 931.040803][ T1141] ? mark_lock+0xc2/0x1220 [ 931.045539][ T1141] mutex_lock_nested+0x16/0x20 [ 931.050390][ T1141] ? mutex_lock_nested+0x16/0x20 [ 931.056576][ T1141] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.063226][ T1141] hashlimit_mt_check_v1+0x325/0x3ab [ 931.068528][ T1141] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 931.074296][ T1141] ? lock_downgrade+0x920/0x920 [ 931.079152][ T1141] ? xt_find_match+0xa6/0x280 [ 931.084212][ T1141] ? mutex_trylock+0x2d0/0x2d0 [ 931.088983][ T1141] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 931.095457][ T1141] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 931.100948][ T1141] xt_check_match+0x280/0x690 [ 931.106016][ T1141] ? xt_check_target+0x690/0x690 [ 931.110977][ T1141] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 931.117768][ T1141] ? mutex_unlock+0xd/0x10 [ 931.122192][ T1141] ? xt_find_match+0x73/0x280 [ 931.127360][ T1141] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 931.133910][ T1141] find_check_entry.isra.0+0x32f/0x920 [ 931.139389][ T1141] ? ipt_do_table+0x1b80/0x1b80 [ 931.144550][ T1141] ? lockdep_hardirqs_on+0x421/0x5e0 [ 931.149988][ T1141] ? trace_hardirqs_on+0x67/0x240 [ 931.155438][ T1141] ? kvfree+0x4a/0x60 [ 931.159457][ T1141] translate_table+0xcb4/0x17d0 [ 931.164735][ T1141] ? compat_do_ipt_get_ctl+0x910/0x910 [ 931.170220][ T1141] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 931.176807][ T1141] ? _copy_from_user+0x12c/0x1a0 [ 931.181759][ T1141] do_ipt_set_ctl+0x2fe/0x4c2 [ 931.187706][ T1141] ? compat_do_ipt_set_ctl+0x170/0x170 [ 931.193498][ T1141] ? mutex_unlock+0xd/0x10 [ 931.197984][ T1141] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 931.204454][ T1141] nf_setsockopt+0x77/0xd0 [ 931.208909][ T1141] ip_setsockopt+0xdf/0x100 [ 931.213827][ T1141] tcp_setsockopt+0x8f/0xe0 [ 931.218361][ T1141] sock_common_setsockopt+0x94/0xd0 [ 931.223964][ T1141] __sys_setsockopt+0x261/0x4c0 [ 931.228955][ T1141] ? sock_create_kern+0x50/0x50 [ 931.234269][ T1141] ? up_read+0x1cd/0x810 [ 931.238555][ T1141] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 931.244400][ T1141] ? do_syscall_64+0x26/0x790 [ 931.249101][ T1141] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 931.255607][ T1141] ? do_syscall_64+0x26/0x790 [ 931.260307][ T1141] __x64_sys_setsockopt+0xbe/0x150 [ 931.265779][ T1141] do_syscall_64+0xfa/0x790 [ 931.270314][ T1141] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 931.276641][ T1141] RIP: 0033:0x441c39 [ 931.280558][ T1141] 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 [ 931.300947][ T1141] RSP: 002b:00007ffcec7c8618 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 931.309894][ T1141] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 931.319306][ T1141] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 931.327837][ T1141] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 931.336233][ T1141] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 931.344601][ T1141] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 931.353162][ T1141] INFO: task syz-executor870:10629 blocked for more than 144 seconds. [ 931.361312][ T1141] Not tainted 5.6.0-rc1-syzkaller #0 [ 931.367628][ T1141] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 931.376760][ T1141] syz-executor870 D28072 10629 10621 0x00000004 [ 931.383592][ T1141] Call Trace: [ 931.386913][ T1141] __schedule+0x934/0x1f90 [ 931.391358][ T1141] ? __sched_text_start+0x8/0x8 [ 931.396685][ T1141] ? lock_downgrade+0x920/0x920 [ 931.401573][ T1141] ? rwlock_bug.part.0+0x90/0x90 [ 931.408138][ T1141] schedule+0xdc/0x2b0 [ 931.412253][ T1141] schedule_preempt_disabled+0x13/0x20 [ 931.418164][ T1141] __mutex_lock+0x7ab/0x13c0 [ 931.423249][ T1141] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.429770][ T1141] ? mutex_trylock+0x2d0/0x2d0 [ 931.434977][ T1141] ? mark_held_locks+0xf0/0xf0 [ 931.439779][ T1141] ? mark_held_locks+0xf0/0xf0 [ 931.445863][ T1141] ? __kasan_check_read+0x11/0x20 [ 931.450909][ T1141] ? mark_lock+0xc2/0x1220 [ 931.455756][ T1141] mutex_lock_nested+0x16/0x20 [ 931.460540][ T1141] ? mutex_lock_nested+0x16/0x20 [ 931.465881][ T1141] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.472771][ T1141] hashlimit_mt_check_v1+0x325/0x3ab [ 931.478075][ T1141] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 931.484125][ T1141] ? lock_downgrade+0x920/0x920 [ 931.489086][ T1141] ? xt_find_match+0xa6/0x280 [ 931.494156][ T1141] ? mutex_trylock+0x2d0/0x2d0 [ 931.498930][ T1141] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 931.505456][ T1141] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 931.510927][ T1141] xt_check_match+0x280/0x690 [ 931.515945][ T1141] ? xt_check_target+0x690/0x690 [ 931.520896][ T1141] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 931.527488][ T1141] ? mutex_unlock+0xd/0x10 [ 931.531919][ T1141] ? xt_find_match+0x73/0x280 [ 931.537123][ T1141] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 931.543646][ T1141] find_check_entry.isra.0+0x32f/0x920 [ 931.549145][ T1141] ? ipt_do_table+0x1b80/0x1b80 [ 931.554358][ T1141] ? lockdep_hardirqs_on+0x421/0x5e0 [ 931.559650][ T1141] ? trace_hardirqs_on+0x67/0x240 [ 931.564980][ T1141] ? kvfree+0x4a/0x60 [ 931.568988][ T1141] translate_table+0xcb4/0x17d0 [ 931.575145][ T1141] ? compat_do_ipt_get_ctl+0x910/0x910 [ 931.580617][ T1141] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 931.587481][ T1141] ? _copy_from_user+0x12c/0x1a0 [ 931.592938][ T1141] do_ipt_set_ctl+0x2fe/0x4c2 [ 931.597640][ T1141] ? compat_do_ipt_set_ctl+0x170/0x170 [ 931.603506][ T1141] ? mutex_unlock+0xd/0x10 [ 931.607938][ T1141] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 931.614308][ T1141] nf_setsockopt+0x77/0xd0 [ 931.618743][ T1141] ip_setsockopt+0xdf/0x100 [ 931.623577][ T1141] tcp_setsockopt+0x8f/0xe0 [ 931.628095][ T1141] sock_common_setsockopt+0x94/0xd0 [ 931.633704][ T1141] __sys_setsockopt+0x261/0x4c0 [ 931.638572][ T1141] ? sock_create_kern+0x50/0x50 [ 931.643722][ T1141] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 931.649295][ T1141] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 931.655094][ T1141] ? do_syscall_64+0x26/0x790 [ 931.659773][ T1141] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 931.666155][ T1141] ? do_syscall_64+0x26/0x790 [ 931.670865][ T1141] __x64_sys_setsockopt+0xbe/0x150 [ 931.676419][ T1141] do_syscall_64+0xfa/0x790 [ 931.680945][ T1141] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 931.687226][ T1141] RIP: 0033:0x441c39 [ 931.691139][ T1141] 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 [ 931.712185][ T1141] RSP: 002b:00007ffcec7c8618 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 931.721130][ T1141] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 931.730019][ T1141] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 931.738418][ T1141] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 931.747203][ T1141] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 931.755747][ T1141] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 931.764196][ T1141] INFO: task syz-executor870:10630 blocked for more than 145 seconds. [ 931.772844][ T1141] Not tainted 5.6.0-rc1-syzkaller #0 [ 931.778654][ T1141] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 931.787770][ T1141] syz-executor870 D28072 10630 10622 0x00004004 [ 931.794680][ T1141] Call Trace: [ 931.798007][ T1141] __schedule+0x934/0x1f90 [ 931.802866][ T1141] ? __sched_text_start+0x8/0x8 [ 931.807735][ T1141] ? lock_downgrade+0x920/0x920 [ 931.813019][ T1141] ? rwlock_bug.part.0+0x90/0x90 [ 931.817999][ T1141] schedule+0xdc/0x2b0 [ 931.822098][ T1141] schedule_preempt_disabled+0x13/0x20 [ 931.828113][ T1141] __mutex_lock+0x7ab/0x13c0 [ 931.834162][ T1141] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.840714][ T1141] ? mutex_trylock+0x2d0/0x2d0 [ 931.845994][ T1141] ? mark_held_locks+0xf0/0xf0 [ 931.850787][ T1141] ? mark_held_locks+0xf0/0xf0 [ 931.855908][ T1141] ? __kasan_check_read+0x11/0x20 [ 931.860936][ T1141] ? mark_lock+0xc2/0x1220 [ 931.865703][ T1141] mutex_lock_nested+0x16/0x20 [ 931.870473][ T1141] ? mutex_lock_nested+0x16/0x20 [ 931.875723][ T1141] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.882076][ T1141] hashlimit_mt_check_v1+0x325/0x3ab [ 931.887787][ T1141] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 931.893722][ T1141] ? lock_downgrade+0x920/0x920 [ 931.898583][ T1141] ? xt_find_match+0xa6/0x280 [ 931.903666][ T1141] ? mutex_trylock+0x2d0/0x2d0 [ 931.908445][ T1141] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 931.914928][ T1141] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 931.920401][ T1141] xt_check_match+0x280/0x690 [ 931.925436][ T1141] ? xt_check_target+0x690/0x690 [ 931.930386][ T1141] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 931.936955][ T1141] ? mutex_unlock+0xd/0x10 [ 931.941381][ T1141] ? xt_find_match+0x73/0x280 [ 931.946392][ T1141] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 931.953099][ T1141] find_check_entry.isra.0+0x32f/0x920 [ 931.958579][ T1141] ? ipt_do_table+0x1b80/0x1b80 [ 931.964688][ T1141] ? lockdep_hardirqs_on+0x421/0x5e0 [ 931.969992][ T1141] ? trace_hardirqs_on+0x67/0x240 [ 931.975347][ T1141] ? kvfree+0x4a/0x60 [ 931.979356][ T1141] translate_table+0xcb4/0x17d0 [ 931.984558][ T1141] ? compat_do_ipt_get_ctl+0x910/0x910 [ 931.990030][ T1141] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 931.996594][ T1141] ? _copy_from_user+0x12c/0x1a0 [ 932.001543][ T1141] do_ipt_set_ctl+0x2fe/0x4c2 [ 932.006614][ T1141] ? compat_do_ipt_set_ctl+0x170/0x170 [ 932.012115][ T1141] ? mutex_unlock+0xd/0x10 [ 932.016831][ T1141] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 932.023144][ T1141] nf_setsockopt+0x77/0xd0 [ 932.027571][ T1141] ip_setsockopt+0xdf/0x100 [ 932.032079][ T1141] tcp_setsockopt+0x8f/0xe0 [ 932.036933][ T1141] sock_common_setsockopt+0x94/0xd0 [ 932.042147][ T1141] __sys_setsockopt+0x261/0x4c0 [ 932.047333][ T1141] ? sock_create_kern+0x50/0x50 [ 932.052182][ T1141] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 932.058244][ T1141] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 932.064141][ T1141] ? do_syscall_64+0x26/0x790 [ 932.068840][ T1141] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 932.075315][ T1141] ? do_syscall_64+0x26/0x790 [ 932.080012][ T1141] __x64_sys_setsockopt+0xbe/0x150 [ 932.085553][ T1141] do_syscall_64+0xfa/0x790 [ 932.090094][ T1141] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 932.097334][ T1141] RIP: 0033:0x441c39 [ 932.101252][ T1141] 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 [ 932.121453][ T1141] RSP: 002b:00007ffcec7c8618 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 932.130325][ T1141] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 932.138811][ T1141] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 932.147440][ T1141] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 932.155942][ T1141] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 932.164479][ T1141] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 932.172886][ T1141] [ 932.172886][ T1141] Showing all locks held in the system: [ 932.180684][ T1141] 1 lock held by khungtaskd/1141: [ 932.186114][ T1141] #0: ffffffff89bac240 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 [ 932.195891][ T1141] 1 lock held by rsyslogd/10464: [ 932.200831][ T1141] #0: ffff8880928030e0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 932.209969][ T1141] 2 locks held by getty/10586: [ 932.215112][ T1141] #0: ffff888095314090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 932.225416][ T1141] #1: ffffc900017cb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 932.235571][ T1141] 2 locks held by getty/10587: [ 932.240348][ T1141] #0: ffff888093dc1090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 932.249846][ T1141] #1: ffffc9000185b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 932.259997][ T1141] 2 locks held by getty/10588: [ 932.265222][ T1141] #0: ffff888091cf8090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 932.274704][ T1141] #1: ffffc9000181b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 932.284748][ T1141] 2 locks held by getty/10589: [ 932.289514][ T1141] #0: ffff888091242090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 932.298927][ T1141] #1: ffffc9000183b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 932.309038][ T1141] 2 locks held by getty/10590: [ 932.314132][ T1141] #0: ffff888096be6090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 932.323496][ T1141] #1: ffffc9000182b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 932.333496][ T1141] 2 locks held by getty/10591: [ 932.338266][ T1141] #0: ffff8880a8c42090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 932.347698][ T1141] #1: ffffc9000184b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 932.358698][ T1141] 2 locks held by getty/10592: [ 932.363953][ T1141] #0: ffff888092065090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 932.373667][ T1141] #1: ffffc9000179b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 932.383645][ T1141] 1 lock held by syz-executor870/10625: [ 932.389195][ T1141] #0: ffffffff8a7d2760 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 932.400625][ T1141] 1 lock held by syz-executor870/10626: [ 932.406569][ T1141] 1 lock held by syz-executor870/10627: [ 932.412131][ T1141] #0: ffffffff8a7d2760 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 932.423377][ T1141] 1 lock held by syz-executor870/10628: [ 932.428933][ T1141] #0: ffffffff8a7d2760 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 932.440116][ T1141] 1 lock held by syz-executor870/10629: [ 932.446072][ T1141] #0: ffffffff8a7d2760 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 932.457354][ T1141] 1 lock held by syz-executor870/10630: [ 932.463387][ T1141] #0: ffffffff8a7d2760 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 932.474602][ T1141] [ 932.476941][ T1141] ============================================= [ 932.476941][ T1141] [ 932.486838][ T1141] NMI backtrace for cpu 1 [ 932.491203][ T1141] CPU: 1 PID: 1141 Comm: khungtaskd Not tainted 5.6.0-rc1-syzkaller #0 [ 932.499527][ T1141] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 932.509589][ T1141] Call Trace: [ 932.513004][ T1141] dump_stack+0x197/0x210 [ 932.517376][ T1141] nmi_cpu_backtrace.cold+0x70/0xb2 [ 932.522657][ T1141] ? vprintk_func+0x86/0x189 [ 932.527353][ T1141] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 932.533007][ T1141] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 932.539009][ T1141] arch_trigger_cpumask_backtrace+0x14/0x20 [ 932.544919][ T1141] watchdog+0xb11/0x10c0 [ 932.549351][ T1141] kthread+0x361/0x430 [ 932.553424][ T1141] ? reset_hung_task_detector+0x30/0x30 [ 932.559105][ T1141] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 932.564842][ T1141] ret_from_fork+0x24/0x30 [ 932.569399][ T1141] Sending NMI from CPU 1 to CPUs 0: [ 932.575367][ C0] NMI backtrace for cpu 0 [ 932.575373][ C0] CPU: 0 PID: 10626 Comm: syz-executor870 Not tainted 5.6.0-rc1-syzkaller #0 [ 932.575379][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 932.575382][ C0] RIP: 0010:__lock_acquire+0x1a08/0x4a00 [ 932.575392][ C0] Code: 06 48 8d 3c c5 60 9b 51 8b e8 f4 21 59 00 48 0f a3 1d 1c b8 f6 09 4c 8b 95 70 ff ff ff 4c 8b 9d 30 ff ff ff 0f 83 18 07 00 00 <48> 69 db b0 00 00 00 48 81 c3 80 9f 51 8b 48 8d 7b 40 48 b8 00 00 [ 932.575396][ C0] RSP: 0018:ffffc90001fe75f0 EFLAGS: 00000047 [ 932.575403][ C0] RAX: 0000000000000001 RBX: 00000000000005ae RCX: ffffffff815ae33c [ 932.575408][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8b519c10 [ 932.575412][ C0] RBP: ffffc90001fe7708 R08: 1ffffffff16a3382 R09: fffffbfff16a3383 [ 932.575417][ C0] R10: ffff8880a8410a80 R11: ffff8880a84101c0 R12: 000000004d1f54c1 [ 932.575422][ C0] R13: ffffffff8aa5d510 R14: ffff8880a8410a58 R15: 0000000000000000 [ 932.575427][ C0] FS: 0000000001be0880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 932.575431][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 932.575436][ C0] CR2: ffffffffff600400 CR3: 000000009fbae000 CR4: 00000000001406f0 [ 932.575442][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 932.575446][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 932.575449][ C0] Call Trace: [ 932.575452][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 932.575455][ C0] ? lockdep_hardirqs_on+0x421/0x5e0 [ 932.575458][ C0] ? retint_kernel+0x2b/0x2b [ 932.575462][ C0] ? trace_hardirqs_on_caller+0x6a/0x240 [ 932.575465][ C0] ? mark_held_locks+0xf0/0xf0 [ 932.575468][ C0] ? mark_held_locks+0xa4/0xf0 [ 932.575471][ C0] lock_acquire+0x190/0x410 [ 932.575475][ C0] ? htable_selective_cleanup+0xa1/0x340 [ 932.575478][ C0] _raw_spin_lock_bh+0x33/0x50 [ 932.575481][ C0] ? htable_selective_cleanup+0xa1/0x340 [ 932.575485][ C0] htable_selective_cleanup+0xa1/0x340 [ 932.575488][ C0] htable_put+0x174/0x220 [ 932.575491][ C0] ? hashlimit_mt_destroy_v2+0x70/0x70 [ 932.575494][ C0] hashlimit_mt_destroy_v1+0x50/0x70 [ 932.575497][ C0] cleanup_match+0xde/0x170 [ 932.575500][ C0] ? icmp_checkentry+0xa0/0xa0 [ 932.575504][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 932.575507][ C0] find_check_entry.isra.0+0x454/0x920 [ 932.575510][ C0] ? ipt_do_table+0x1b80/0x1b80 [ 932.575514][ C0] ? lockdep_hardirqs_on+0x421/0x5e0 [ 932.575516][ C0] ? kvfree+0x4a/0x60 [ 932.575520][ C0] translate_table+0xcb4/0x17d0 [ 932.575523][ C0] ? compat_do_ipt_get_ctl+0x910/0x910 [ 932.575527][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 932.575530][ C0] ? _copy_from_user+0x12c/0x1a0 [ 932.575533][ C0] do_ipt_set_ctl+0x2fe/0x4c2 [ 932.575537][ C0] ? compat_do_ipt_set_ctl+0x170/0x170 [ 932.575540][ C0] ? mutex_unlock+0xd/0x10 [ 932.575543][ C0] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 932.575546][ C0] nf_setsockopt+0x77/0xd0 [ 932.575549][ C0] ip_setsockopt+0xdf/0x100 [ 932.575552][ C0] tcp_setsockopt+0x8f/0xe0 [ 932.575556][ C0] sock_common_setsockopt+0x94/0xd0 [ 932.575559][ C0] __sys_setsockopt+0x261/0x4c0 [ 932.575562][ C0] ? sock_create_kern+0x50/0x50 [ 932.575565][ C0] ? up_read+0x1cd/0x810 [ 932.575568][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 932.575571][ C0] ? do_syscall_64+0x26/0x790 [ 932.575575][ C0] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 932.575578][ C0] ? do_syscall_64+0x26/0x790 [ 932.575582][ C0] __x64_sys_setsockopt+0xbe/0x150 [ 932.575585][ C0] do_syscall_64+0xfa/0x790 [ 932.575588][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 932.575591][ C0] RIP: 0033:0x441c39 [ 932.575601][ 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 [ 932.575605][ C0] RSP: 002b:00007ffcec7c8618 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 932.575613][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 932.575617][ C0] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 932.575622][ C0] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 932.575626][ C0] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 932.575631][ C0] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 932.578329][ T1141] Kernel panic - not syncing: hung_task: blocked tasks [ 933.010359][ T1141] CPU: 1 PID: 1141 Comm: khungtaskd Not tainted 5.6.0-rc1-syzkaller #0 [ 933.018602][ T1141] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 933.029188][ T1141] Call Trace: [ 933.032500][ T1141] dump_stack+0x197/0x210 [ 933.037006][ T1141] panic+0x2e3/0x75c [ 933.040968][ T1141] ? add_taint.cold+0x16/0x16 [ 933.045668][ T1141] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 933.051332][ T1141] ? ___preempt_schedule+0x16/0x18 [ 933.056488][ T1141] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 933.062656][ T1141] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b [ 933.068823][ T1141] ? nmi_trigger_cpumask_backtrace+0x256/0x28b [ 933.074991][ T1141] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 933.081271][ T1141] watchdog+0xb22/0x10c0 [ 933.085561][ T1141] kthread+0x361/0x430 [ 933.089645][ T1141] ? reset_hung_task_detector+0x30/0x30 [ 933.095199][ T1141] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 933.100962][ T1141] ret_from_fork+0x24/0x30 [ 933.107312][ T1141] Kernel Offset: disabled [ 933.111644][ T1141] Rebooting in 86400 seconds..