[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 47.908607] kauditd_printk_skb: 4 callbacks suppressed [ 47.908628] audit: type=1400 audit(1581585411.536:35): avc: denied { map } for pid=8104 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 [ 58.124868] audit: type=1400 audit(1581585421.756:36): avc: denied { map } for pid=8112 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.1.34' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 785.993408] audit: type=1400 audit(1581586149.626:37): avc: denied { map } for pid=8119 comm="syz-executor853" path="/root/syz-executor853016945" 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 [ 940.221690] INFO: task syz-executor853:8127 blocked for more than 140 seconds. [ 940.229291] Not tainted 4.19.103-syzkaller #0 [ 940.235291] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 940.243436] syz-executor853 D28216 8127 8123 0x00000004 [ 940.249141] Call Trace: [ 940.252052] __schedule+0x866/0x1dc0 [ 940.255784] ? __mutex_lock+0x721/0x1300 [ 940.259865] ? firmware_map_remove+0x1a6/0x1a6 [ 940.265656] schedule+0x92/0x1c0 [ 940.269048] schedule_preempt_disabled+0x13/0x20 [ 940.274004] __mutex_lock+0x726/0x1300 [ 940.277961] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 940.283949] ? mutex_trylock+0x1e0/0x1e0 [ 940.288097] ? __bitmap_weight+0xdb/0x110 [ 940.292499] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 940.297564] ? pcpu_alloc+0xf95/0x12b0 [ 940.301662] ? pcpu_alloc+0xf95/0x12b0 [ 940.305570] ? __kprobes_text_end+0x339d0/0xac2d0 [ 940.310568] mutex_lock_nested+0x16/0x20 [ 940.314851] ? mutex_lock_nested+0x16/0x20 [ 940.319099] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 940.324921] hashlimit_mt_check_v1+0x325/0x3ab [ 940.329520] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 940.334471] ? mutex_trylock+0x1e0/0x1e0 [ 940.338553] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 940.343584] xt_check_match+0x280/0x690 [ 940.347577] ? xt_check_target+0x6a0/0x6a0 [ 940.352200] ? mutex_unlock+0xd/0x10 [ 940.355933] ? xt_find_match+0x73/0x280 [ 940.359932] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 940.365729] find_check_entry.isra.0+0x32f/0x920 [ 940.370517] ? ipt_do_table+0x1b30/0x1b30 [ 940.374950] ? lockdep_hardirqs_on+0x415/0x5d0 [ 940.379586] ? trace_hardirqs_on+0x67/0x220 [ 940.384135] ? kvfree+0x61/0x70 [ 940.387436] translate_table+0xcb4/0x17d0 [ 940.392618] ? alloc_counters.isra.0+0x680/0x680 [ 940.397403] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 940.403306] ? _copy_from_user+0xdd/0x150 [ 940.407501] do_ipt_set_ctl+0x2ef/0x492 [ 940.411694] ? compat_do_ipt_set_ctl+0x160/0x160 [ 940.416487] ? mutex_unlock+0xd/0x10 [ 940.420303] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 940.426015] nf_setsockopt+0x77/0xd0 [ 940.429806] ip_setsockopt+0xdf/0x100 [ 940.433858] tcp_setsockopt+0x8f/0xe0 [ 940.437727] sock_common_setsockopt+0x94/0xd0 [ 940.442396] __sys_setsockopt+0x17a/0x280 [ 940.446572] ? kernel_accept+0x310/0x310 [ 940.450736] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 940.455721] ? do_syscall_64+0x26/0x620 [ 940.459712] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 940.465273] ? do_syscall_64+0x26/0x620 [ 940.469264] __x64_sys_setsockopt+0xbe/0x150 [ 940.473907] do_syscall_64+0xfd/0x620 [ 940.477730] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 940.483129] RIP: 0033:0x441c39 [ 940.486332] 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 [ 940.505478] RSP: 002b:00007ffe74f1e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 940.513587] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 940.520896] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 940.529214] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 940.536700] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 940.544272] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 940.551751] INFO: task syz-executor853:8128 blocked for more than 140 seconds. [ 940.559237] Not tainted 4.19.103-syzkaller #0 [ 940.564757] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 940.572932] syz-executor853 D28216 8128 8121 0x00000004 [ 940.578582] Call Trace: [ 940.581190] __schedule+0x866/0x1dc0 [ 940.585175] ? __mutex_lock+0x721/0x1300 [ 940.589263] ? firmware_map_remove+0x1a6/0x1a6 [ 940.594086] ? kasan_check_read+0x11/0x20 [ 940.598341] schedule+0x92/0x1c0 [ 940.601896] schedule_preempt_disabled+0x13/0x20 [ 940.606675] __mutex_lock+0x726/0x1300 [ 940.610585] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 940.616622] ? mutex_trylock+0x1e0/0x1e0 [ 940.620708] ? lockdep_hardirqs_on+0x415/0x5d0 [ 940.625943] ? trace_hardirqs_on+0x67/0x220 [ 940.630406] ? finish_task_switch+0x118/0x7c0 [ 940.635094] mutex_lock_nested+0x16/0x20 [ 940.639166] ? mutex_lock_nested+0x16/0x20 [ 940.643731] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 940.649383] hashlimit_mt_check_v1+0x325/0x3ab [ 940.654911] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 940.659721] ? mutex_trylock+0x1e0/0x1e0 [ 940.663997] ? pcpu_alloc+0x6c4/0x12b0 [ 940.667942] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 940.672940] xt_check_match+0x280/0x690 [ 940.676948] ? xt_check_target+0x6a0/0x6a0 [ 940.681214] ? mutex_unlock+0xd/0x10 [ 940.685187] ? xt_find_match+0x73/0x280 [ 940.689190] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 940.694933] find_check_entry.isra.0+0x32f/0x920 [ 940.699724] ? ipt_do_table+0x1b30/0x1b30 [ 940.704204] ? lockdep_hardirqs_on+0x415/0x5d0 [ 940.708800] ? trace_hardirqs_on+0x67/0x220 [ 940.713267] ? kvfree+0x61/0x70 [ 940.716574] translate_table+0xcb4/0x17d0 [ 940.720833] ? alloc_counters.isra.0+0x680/0x680 [ 940.725815] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 940.731398] ? _copy_from_user+0xdd/0x150 [ 940.735739] do_ipt_set_ctl+0x2ef/0x492 [ 940.739731] ? compat_do_ipt_set_ctl+0x160/0x160 [ 940.744719] ? mutex_unlock+0xd/0x10 [ 940.748555] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 940.754004] nf_setsockopt+0x77/0xd0 [ 940.757731] ip_setsockopt+0xdf/0x100 [ 940.761744] tcp_setsockopt+0x8f/0xe0 [ 940.765567] sock_common_setsockopt+0x94/0xd0 [ 940.770072] __sys_setsockopt+0x17a/0x280 [ 940.774581] ? kernel_accept+0x310/0x310 [ 940.778662] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 940.784391] ? do_syscall_64+0x26/0x620 [ 940.788561] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 940.794130] ? do_syscall_64+0x26/0x620 [ 940.798121] __x64_sys_setsockopt+0xbe/0x150 [ 940.802848] do_syscall_64+0xfd/0x620 [ 940.806693] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 940.812063] RIP: 0033:0x441c39 [ 940.815511] 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 [ 940.838300] RSP: 002b:00007ffe74f1e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 940.846225] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 940.853704] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 940.860989] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 940.868587] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 940.876194] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 940.883813] INFO: task syz-executor853:8129 blocked for more than 140 seconds. [ 940.891185] Not tainted 4.19.103-syzkaller #0 [ 940.896425] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 940.904593] syz-executor853 D28216 8129 8124 0x00000004 [ 940.910365] Call Trace: [ 940.913969] __schedule+0x866/0x1dc0 [ 940.917697] ? __mutex_lock+0x721/0x1300 [ 940.921907] ? firmware_map_remove+0x1a6/0x1a6 [ 940.926516] ? kasan_check_read+0x11/0x20 [ 940.930682] schedule+0x92/0x1c0 [ 940.934271] schedule_preempt_disabled+0x13/0x20 [ 940.939054] __mutex_lock+0x726/0x1300 [ 940.943135] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 940.949043] ? mutex_trylock+0x1e0/0x1e0 [ 940.953298] ? __bitmap_weight+0xdb/0x110 [ 940.957461] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 940.962857] ? pcpu_alloc+0xf95/0x12b0 [ 940.966765] ? pcpu_alloc+0xf95/0x12b0 [ 940.970667] mutex_lock_nested+0x16/0x20 [ 940.974953] ? mutex_lock_nested+0x16/0x20 [ 940.979310] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 940.985310] hashlimit_mt_check_v1+0x325/0x3ab [ 940.989913] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 940.994876] ? mutex_trylock+0x1e0/0x1e0 [ 940.998950] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 941.003961] xt_check_match+0x280/0x690 [ 941.007972] ? xt_check_target+0x6a0/0x6a0 [ 941.012547] ? mutex_unlock+0xd/0x10 [ 941.016284] ? xt_find_match+0x73/0x280 [ 941.020284] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 941.026060] find_check_entry.isra.0+0x32f/0x920 [ 941.030847] ? ipt_do_table+0x1b30/0x1b30 [ 941.035244] ? lockdep_hardirqs_on+0x415/0x5d0 [ 941.039863] ? trace_hardirqs_on+0x67/0x220 [ 941.045194] ? kvfree+0x61/0x70 [ 941.048596] translate_table+0xcb4/0x17d0 [ 941.053155] ? alloc_counters.isra.0+0x680/0x680 [ 941.057946] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 941.063672] ? _copy_from_user+0xdd/0x150 [ 941.067838] do_ipt_set_ctl+0x2ef/0x492 [ 941.072031] ? compat_do_ipt_set_ctl+0x160/0x160 [ 941.076820] ? mutex_unlock+0xd/0x10 [ 941.080566] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 941.086051] nf_setsockopt+0x77/0xd0 [ 941.089779] ip_setsockopt+0xdf/0x100 [ 941.093757] tcp_setsockopt+0x8f/0xe0 [ 941.097702] sock_common_setsockopt+0x94/0xd0 [ 941.102387] __sys_setsockopt+0x17a/0x280 [ 941.106557] ? kernel_accept+0x310/0x310 [ 941.110638] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 941.115630] ? do_syscall_64+0x26/0x620 [ 941.119621] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 941.125186] ? do_syscall_64+0x26/0x620 [ 941.129183] __x64_sys_setsockopt+0xbe/0x150 [ 941.133970] do_syscall_64+0xfd/0x620 [ 941.137825] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 941.143240] RIP: 0033:0x441c39 [ 941.146450] 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 [ 941.165587] RSP: 002b:00007ffe74f1e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 941.174425] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 941.182019] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 941.189421] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 941.197067] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 941.204541] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 941.212113] INFO: task syz-executor853:8130 blocked for more than 140 seconds. [ 941.219522] Not tainted 4.19.103-syzkaller #0 [ 941.224869] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 941.233013] syz-executor853 D28216 8130 8122 0x00000004 [ 941.238656] Call Trace: [ 941.241263] __schedule+0x866/0x1dc0 [ 941.245212] ? __mutex_lock+0x721/0x1300 [ 941.249288] ? firmware_map_remove+0x1a6/0x1a6 [ 941.254022] ? kasan_check_read+0x11/0x20 [ 941.258193] schedule+0x92/0x1c0 [ 941.261839] schedule_preempt_disabled+0x13/0x20 [ 941.266618] __mutex_lock+0x726/0x1300 [ 941.270525] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 941.276559] ? mutex_trylock+0x1e0/0x1e0 [ 941.280636] ? lockdep_hardirqs_on+0x415/0x5d0 [ 941.285570] ? trace_hardirqs_on+0x67/0x220 [ 941.289944] ? finish_task_switch+0x1db/0x7c0 [ 941.294651] mutex_lock_nested+0x16/0x20 [ 941.299629] ? mutex_lock_nested+0x16/0x20 [ 941.304895] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 941.310560] hashlimit_mt_check_v1+0x325/0x3ab [ 941.315379] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 941.320159] ? mutex_trylock+0x1e0/0x1e0 [ 941.324428] ? pcpu_alloc+0x6c4/0x12b0 [ 941.328337] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 941.333332] xt_check_match+0x280/0x690 [ 941.337345] ? xt_check_target+0x6a0/0x6a0 [ 941.341836] ? mutex_unlock+0xd/0x10 [ 941.345569] ? xt_find_match+0x73/0x280 [ 941.349574] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 941.355378] find_check_entry.isra.0+0x32f/0x920 [ 941.360175] ? ipt_do_table+0x1b30/0x1b30 [ 941.364639] ? lockdep_hardirqs_on+0x415/0x5d0 [ 941.369272] ? trace_hardirqs_on+0x67/0x220 [ 941.373835] ? kvfree+0x61/0x70 [ 941.377141] translate_table+0xcb4/0x17d0 [ 941.381333] ? alloc_counters.isra.0+0x680/0x680 [ 941.386355] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 941.392208] ? _copy_from_user+0xdd/0x150 [ 941.396393] do_ipt_set_ctl+0x2ef/0x492 [ 941.400475] ? compat_do_ipt_set_ctl+0x160/0x160 [ 941.405679] ? mutex_unlock+0xd/0x10 [ 941.409422] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 941.414952] nf_setsockopt+0x77/0xd0 [ 941.418720] ip_setsockopt+0xdf/0x100 [ 941.422749] tcp_setsockopt+0x8f/0xe0 [ 941.426577] sock_common_setsockopt+0x94/0xd0 [ 941.431268] __sys_setsockopt+0x17a/0x280 [ 941.436413] ? kernel_accept+0x310/0x310 [ 941.440540] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 941.445805] ? do_syscall_64+0x26/0x620 [ 941.449818] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 941.455394] ? do_syscall_64+0x26/0x620 [ 941.459395] __x64_sys_setsockopt+0xbe/0x150 [ 941.464040] do_syscall_64+0xfd/0x620 [ 941.467884] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 941.473233] RIP: 0033:0x441c39 [ 941.476437] 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 [ 941.495727] RSP: 002b:00007ffe74f1e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 941.503637] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 941.510937] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 941.518454] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 941.525902] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 941.533394] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 941.540707] INFO: task syz-executor853:8131 blocked for more than 140 seconds. [ 941.548291] Not tainted 4.19.103-syzkaller #0 [ 941.553508] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 941.562463] syz-executor853 D28216 8131 8120 0x00000004 [ 941.568134] Call Trace: [ 941.570744] __schedule+0x866/0x1dc0 [ 941.574721] ? __mutex_lock+0x721/0x1300 [ 941.578922] ? firmware_map_remove+0x1a6/0x1a6 [ 941.583818] ? kasan_check_read+0x11/0x20 [ 941.588064] schedule+0x92/0x1c0 [ 941.591453] schedule_preempt_disabled+0x13/0x20 [ 941.596487] __mutex_lock+0x726/0x1300 [ 941.600472] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 941.606664] ? mutex_trylock+0x1e0/0x1e0 [ 941.610744] ? __bitmap_weight+0xdb/0x110 [ 941.615414] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 941.620462] ? pcpu_alloc+0xf95/0x12b0 [ 941.624589] ? pcpu_alloc+0xf95/0x12b0 [ 941.628557] ? get_trap_addr+0x10/0x1e0 [ 941.632787] mutex_lock_nested+0x16/0x20 [ 941.636951] ? mutex_lock_nested+0x16/0x20 [ 941.641199] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 941.647059] hashlimit_mt_check_v1+0x325/0x3ab [ 941.651912] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 941.656709] ? mutex_trylock+0x1e0/0x1e0 [ 941.660795] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 941.665787] xt_check_match+0x280/0x690 [ 941.669784] ? xt_check_target+0x6a0/0x6a0 [ 941.674253] ? mutex_unlock+0xd/0x10 [ 941.678012] ? xt_find_match+0x73/0x280 [ 941.683072] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 941.688644] find_check_entry.isra.0+0x32f/0x920 [ 941.694430] ? ipt_do_table+0x1b30/0x1b30 [ 941.698737] ? lockdep_hardirqs_on+0x415/0x5d0 [ 941.703585] ? trace_hardirqs_on+0x67/0x220 [ 941.708803] ? kvfree+0x61/0x70 [ 941.712333] translate_table+0xcb4/0x17d0 [ 941.716630] ? alloc_counters.isra.0+0x680/0x680 [ 941.721395] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 941.727184] ? _copy_from_user+0xdd/0x150 [ 941.731360] do_ipt_set_ctl+0x2ef/0x492 [ 941.735560] ? compat_do_ipt_set_ctl+0x160/0x160 [ 941.740355] ? mutex_unlock+0xd/0x10 [ 941.744279] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 941.749581] nf_setsockopt+0x77/0xd0 [ 941.753518] ip_setsockopt+0xdf/0x100 [ 941.757413] tcp_setsockopt+0x8f/0xe0 [ 941.761260] sock_common_setsockopt+0x94/0xd0 [ 941.765989] __sys_setsockopt+0x17a/0x280 [ 941.770165] ? kernel_accept+0x310/0x310 [ 941.774551] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 941.779362] ? do_syscall_64+0x26/0x620 [ 941.783574] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 941.789021] ? do_syscall_64+0x26/0x620 [ 941.793232] __x64_sys_setsockopt+0xbe/0x150 [ 941.797664] do_syscall_64+0xfd/0x620 [ 941.801671] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 941.806877] RIP: 0033:0x441c39 [ 941.810075] 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 [ 941.830186] RSP: 002b:00007ffe74f1e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 941.838102] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 941.845600] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 941.853119] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 941.860405] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 941.868097] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 941.875705] [ 941.875705] Showing all locks held in the system: [ 941.882239] 1 lock held by khungtaskd/1079: [ 941.886668] #0: 0000000044c8ff75 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e [ 941.895604] 3 locks held by rs:main Q:Reg/7968: [ 941.900403] #0: 000000008c18a93d (&rq->lock){-.-.}, at: __schedule+0x1f8/0x1dc0 [ 941.908185] #1: 0000000044c8ff75 (rcu_read_lock){....}, at: vfs_write+0x429/0x560 [ 941.916113] #2: 0000000044c8ff75 (rcu_read_lock){....}, at: ext4_file_write_iter+0x23f/0x1060 [ 941.925140] 1 lock held by rsyslogd/7970: [ 941.929289] #0: 00000000ef8f2a85 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 941.937422] 2 locks held by getty/8092: [ 941.941413] #0: 00000000aa508422 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 941.949911] #1: 00000000dd41eb41 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 941.959946] 2 locks held by getty/8093: [ 941.964133] #0: 000000008fb5df3a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 941.972577] #1: 0000000044f68f4f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 941.981936] 2 locks held by getty/8094: [ 941.985919] #0: 00000000270c72fa (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 941.994401] #1: 000000003e468b04 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 942.003503] 2 locks held by getty/8095: [ 942.007598] #0: 00000000f3064898 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 942.016076] #1: 00000000b42dd2ea (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 942.025155] 2 locks held by getty/8096: [ 942.029135] #0: 00000000e7c8408a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 942.037755] #1: 00000000e9f1f9a8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 942.046851] 2 locks held by getty/8097: [ 942.050848] #0: 0000000024c4da74 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 942.059327] #1: 00000000b4b1ef11 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 942.068791] 2 locks held by getty/8098: [ 942.072933] #0: 000000006168fbc7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 942.081303] #1: 0000000013156aa1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 942.091253] 1 lock held by syz-executor853/8126: [ 942.096227] 1 lock held by syz-executor853/8127: [ 942.100998] #0: 000000004c6a4b7f (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 942.111458] 1 lock held by syz-executor853/8128: [ 942.116326] #0: 000000004c6a4b7f (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 942.126546] 1 lock held by syz-executor853/8129: [ 942.131307] #0: 000000004c6a4b7f (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 942.141765] 1 lock held by syz-executor853/8130: [ 942.146534] #0: 000000004c6a4b7f (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 942.156848] 1 lock held by syz-executor853/8131: [ 942.161765] #0: 000000004c6a4b7f (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 942.171978] [ 942.173614] ============================================= [ 942.173614] [ 942.180731] NMI backtrace for cpu 0 [ 942.184559] CPU: 0 PID: 1079 Comm: khungtaskd Not tainted 4.19.103-syzkaller #0 [ 942.192021] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 942.201481] Call Trace: [ 942.204148] dump_stack+0x197/0x210 [ 942.207804] nmi_cpu_backtrace.cold+0x63/0xa4 [ 942.212351] ? lapic_can_unplug_cpu.cold+0x47/0x47 [ 942.217329] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 942.222624] arch_trigger_cpumask_backtrace+0x14/0x20 [ 942.227863] watchdog+0x9df/0xee0 [ 942.231436] kthread+0x354/0x420 [ 942.234814] ? reset_hung_task_detector+0x30/0x30 [ 942.239675] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 942.245248] ret_from_fork+0x24/0x30 [ 942.249151] Sending NMI from CPU 0 to CPUs 1: [ 942.254261] NMI backtrace for cpu 1 [ 942.254284] CPU: 1 PID: 8126 Comm: syz-executor853 Not tainted 4.19.103-syzkaller #0 [ 942.254292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 942.254296] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x3/0x20 [ 942.254308] Code: ff 5d c3 0f 1f 40 00 55 0f b7 d6 0f b7 f7 bf 03 00 00 00 48 89 e5 48 8b 4d 08 e8 d8 fe ff ff 5d c3 66 0f 1f 44 00 00 55 89 f2 <89> fe bf 05 00 00 00 48 89 e5 48 8b 4d 08 e8 ba fe ff ff 5d c3 0f [ 942.254312] RSP: 0018:ffff8880a4d67758 EFLAGS: 00000046 [ 942.254320] RAX: ffff888087a6e380 RBX: 0000000000000000 RCX: ffffffff817065b6 [ 942.254325] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 942.254330] RBP: ffff8880a4d67798 R08: ffff888087a6e380 R09: fffff52000bd2c0a [ 942.254335] R10: fffff52000bd2c09 R11: ffffc90005e9604b R12: ffffffff8609d719 [ 942.254341] R13: ffff888087a6e380 R14: ffffc90005e96000 R15: 0000000010345371 [ 942.254346] FS: 0000000000e58880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 942.254351] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 942.254356] CR2: ffffffffff600400 CR3: 000000008c924000 CR4: 00000000001406e0 [ 942.254362] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 942.254367] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 942.254370] Call Trace: [ 942.254373] ? trace_hardirqs_off+0x50/0x220 [ 942.254377] ? htable_selective_cleanup+0x219/0x330 [ 942.254381] __local_bh_enable_ip+0x11a/0x270 [ 942.254385] _raw_spin_unlock_bh+0x31/0x40 [ 942.254389] htable_selective_cleanup+0x219/0x330 [ 942.254392] ? esp_mt+0x420/0x420 [ 942.254395] htable_put+0x176/0x220 [ 942.254399] ? hashlimit_mt_destroy_v2+0x70/0x70 [ 942.254403] hashlimit_mt_destroy_v1+0x50/0x70 [ 942.254406] cleanup_match+0xde/0x170 [ 942.254410] ? icmp_checkentry+0xa0/0xa0 [ 942.254414] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 942.254418] find_check_entry.isra.0+0x454/0x920 [ 942.254422] ? ipt_do_table+0x1b30/0x1b30 [ 942.254425] ? lockdep_hardirqs_on+0x415/0x5d0 [ 942.254429] ? kvfree+0x61/0x70 [ 942.254432] translate_table+0xcb4/0x17d0 [ 942.254436] ? alloc_counters.isra.0+0x680/0x680 [ 942.254440] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 942.254444] ? _copy_from_user+0xdd/0x150 [ 942.254447] do_ipt_set_ctl+0x2ef/0x492 [ 942.254451] ? compat_do_ipt_set_ctl+0x160/0x160 [ 942.254454] ? mutex_unlock+0xd/0x10 [ 942.254458] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 942.254462] nf_setsockopt+0x77/0xd0 [ 942.254465] ip_setsockopt+0xdf/0x100 [ 942.254468] tcp_setsockopt+0x8f/0xe0 [ 942.254472] sock_common_setsockopt+0x94/0xd0 [ 942.254476] __sys_setsockopt+0x17a/0x280 [ 942.254479] ? kernel_accept+0x310/0x310 [ 942.254483] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 942.254487] ? do_syscall_64+0x26/0x620 [ 942.254491] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 942.254494] ? do_syscall_64+0x26/0x620 [ 942.254498] __x64_sys_setsockopt+0xbe/0x150 [ 942.254502] do_syscall_64+0xfd/0x620 [ 942.254506] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 942.254509] RIP: 0033:0x441c39 [ 942.254520] 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 [ 942.254524] RSP: 002b:00007ffe74f1e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 942.254533] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441c39 [ 942.254538] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 942.254544] RBP: 00000000006cc018 R08: 0000000000000318 R09: 00000000004002c8 [ 942.254549] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000004029b0 [ 942.254555] R13: 0000000000402a40 R14: 0000000000000000 R15: 0000000000000000 [ 942.256450] Kernel panic - not syncing: hung_task: blocked tasks [ 942.616318] CPU: 0 PID: 1079 Comm: khungtaskd Not tainted 4.19.103-syzkaller #0 [ 942.624914] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 942.634297] Call Trace: [ 942.636902] dump_stack+0x197/0x210 [ 942.640547] panic+0x26a/0x50e [ 942.643756] ? __warn_printk+0xf3/0xf3 [ 942.647657] ? lapic_can_unplug_cpu.cold+0x47/0x47 [ 942.652606] ? ___preempt_schedule+0x16/0x18 [ 942.657037] ? nmi_trigger_cpumask_backtrace+0x165/0x1f8 [ 942.663454] ? nmi_trigger_cpumask_backtrace+0x1c1/0x1f8 [ 942.668923] ? nmi_trigger_cpumask_backtrace+0x1cb/0x1f8 [ 942.674392] ? nmi_trigger_cpumask_backtrace+0x165/0x1f8 [ 942.679864] watchdog+0x9f0/0xee0 [ 942.683339] kthread+0x354/0x420 [ 942.686728] ? reset_hung_task_detector+0x30/0x30 [ 942.691693] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 942.697348] ret_from_fork+0x24/0x30 [ 942.703017] Kernel Offset: disabled [ 942.706676] Rebooting in 86400 seconds..