[   32.944089] audit: type=1800 audit(1581621195.632:34): pid=7114 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   36.273428] random: sshd: uninitialized urandom read (32 bytes read)
[   36.629167] audit: type=1400 audit(1581621199.332:35): avc:  denied  { map } for  pid=7287 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
[   36.679134] random: sshd: uninitialized urandom read (32 bytes read)
[   37.368775] random: sshd: uninitialized urandom read (32 bytes read)
[  259.321665] audit: type=1400 audit(1581621422.032:36): avc:  denied  { map } for  pid=7295 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
[  890.761733] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.201' (ECDSA) to the list of known hosts.
[  896.352464] random: sshd: uninitialized urandom read (32 bytes read)
executing program
executing program
executing program
executing program
executing program
executing program
[  896.475769] audit: type=1400 audit(1581622059.182:37): avc:  denied  { map } for  pid=7302 comm="syz-executor484" path="/root/syz-executor484995355" 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
[  899.828794] xt_HMARK: hash modulus can't be zero
[  899.828850] xt_HMARK: hash modulus can't be zero
[  899.834276] xt_HMARK: hash modulus can't be zero
[  899.838647] xt_HMARK: hash modulus can't be zero
[  899.849566] xt_HMARK: hash modulus can't be zero
[  899.849589] xt_HMARK: hash modulus can't be zero
[  899.855185] xt_HMARK: hash modulus can't be zero
[  899.859382] xt_HMARK: hash modulus can't be zero
[  899.866503] xt_HMARK: hash modulus can't be zero
[  899.873900] xt_HMARK: hash modulus can't be zero
executing program
executing program
executing program
executing program
executing program
executing program
[  899.873915] xt_HMARK: hash modulus can't be zero
[  899.884183] xt_HMARK: hash modulus can't be zero
[  899.885956] xt_HMARK: hash modulus can't be zero
[  899.898078] xt_HMARK: hash modulus can't be zero
[  899.901164] xt_HMARK: hash modulus can't be zero
[  899.908714] xt_HMARK: hash modulus can't be zero
[  899.909302] xt_HMARK: hash modulus can't be zero
[  899.916931] xt_HMARK: hash modulus can't be zero
executing program
executing program
executing program
executing program
executing program
executing program
executing program
[  899.925908] xt_HMARK: hash modulus can't be zero
[  899.927123] xt_HMARK: hash modulus can't be zero
[  899.932297] xt_HMARK: hash modulus can't be zero
[  899.939653] xt_HMARK: hash modulus can't be zero
[  899.944053] xt_HMARK: hash modulus can't be zero
[  899.946589] xt_HMARK: hash modulus can't be zero
[  899.952767] xt_HMARK: hash modulus can't be zero
[  899.959629] xt_HMARK: hash modulus can't be zero
[  899.966297] xt_HMARK: hash modulus can't be zero
[  899.974162] xt_HMARK: hash modulus can't be zero
[ 1144.790210] INFO: task syz-executor484:7365 blocked for more than 140 seconds.
[ 1144.797773]       Not tainted 4.14.170-syzkaller #0
[ 1144.804501] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1144.812551] syz-executor484 D28192  7365   7307 0x00000004
[ 1144.818253] Call Trace:
[ 1144.824749]  __schedule+0x7b8/0x1cd0
[ 1144.828483]  ? __mutex_lock+0x737/0x1470
[ 1144.832888]  ? firmware_map_remove+0x196/0x196
[ 1144.837484]  schedule+0x92/0x1c0
[ 1144.841154]  schedule_preempt_disabled+0x13/0x20
[ 1144.845905]  __mutex_lock+0x73c/0x1470
[ 1144.849885]  ? hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1144.856039]  ? mutex_trylock+0x1c0/0x1c0
[ 1144.860259]  ? pcpu_next_md_free_region+0x14c/0x2f0
[ 1144.865288]  mutex_lock_nested+0x16/0x20
[ 1144.869344]  ? mutex_lock_nested+0x16/0x20
[ 1144.873984]  hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1144.879629]  hashlimit_mt_check_v1+0x302/0x389
[ 1144.884673]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1144.889507]  ? xt_find_match+0x3e/0x1e0
[ 1144.893826]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1144.898600]  xt_check_match+0x254/0x530
[ 1144.903565]  ? xt_check_target+0x510/0x510
[ 1144.907807]  ? wait_for_completion+0x420/0x420
[ 1144.912896]  ? mutex_unlock+0xd/0x10
[ 1144.916628]  ? xt_find_match+0x178/0x1e0
[ 1144.921042]  ? xt_request_find_match+0x4b/0xe0
[ 1144.925713]  find_check_entry.isra.0+0x2f9/0x920
[ 1144.930926]  ? ipt_do_table+0x1770/0x1770
[ 1144.935147]  ? kfree+0x183/0x270
[ 1144.938511]  ? kvfree+0x4d/0x60
[ 1144.942220]  ? trace_hardirqs_on_caller+0x400/0x590
[ 1144.947262]  ? trace_hardirqs_on+0xd/0x10
[ 1144.951747]  translate_table+0xb3f/0x15a0
[ 1144.955920]  ? __do_replace+0x5b0/0x5b0
[ 1144.959958]  ? _copy_from_user+0x99/0x110
[ 1144.964444]  do_ipt_set_ctl+0x268/0x3ee
[ 1144.968433]  ? compat_do_ipt_set_ctl+0x150/0x150
[ 1144.973606]  ? mutex_unlock+0xd/0x10
[ 1144.977402]  ? nf_sockopt_find.constprop.0+0x1b7/0x230
[ 1144.983027]  nf_setsockopt+0x67/0xc0
[ 1144.986804]  ip_setsockopt+0x9b/0xb0
[ 1144.990814]  tcp_setsockopt+0x84/0xd0
[ 1144.994649]  sock_common_setsockopt+0x94/0xd0
[ 1144.999198]  SyS_setsockopt+0x13c/0x210
[ 1145.003486]  ? SyS_recv+0x40/0x40
[ 1145.006941]  ? do_syscall_64+0x53/0x640
[ 1145.011281]  ? SyS_recv+0x40/0x40
[ 1145.014742]  do_syscall_64+0x1e8/0x640
[ 1145.018630]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1145.023955]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 1145.029146] RIP: 0033:0x4472c9
[ 1145.033555] RSP: 002b:00007fe1126d3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1145.041304] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 00000000004472c9
[ 1145.049171] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000004
[ 1145.056808] RBP: 00000000006dbc30 R08: 0000000000000318 R09: 0000000000000000
[ 1145.064129] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000006dbc3c
[ 1145.071741] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172
[ 1145.079045] INFO: task syz-executor484:7368 blocked for more than 140 seconds.
[ 1145.086752]       Not tainted 4.14.170-syzkaller #0
[ 1145.091805] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1145.099774] syz-executor484 D28392  7368   7305 0x00000004
[ 1145.105762] Call Trace:
[ 1145.108388]  __schedule+0x7b8/0x1cd0
[ 1145.112419]  ? __mutex_lock+0x737/0x1470
[ 1145.116610]  ? firmware_map_remove+0x196/0x196
[ 1145.121571]  schedule+0x92/0x1c0
[ 1145.124942]  schedule_preempt_disabled+0x13/0x20
[ 1145.129815]  __mutex_lock+0x73c/0x1470
[ 1145.134042]  ? hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1145.139840]  ? mutex_trylock+0x1c0/0x1c0
[ 1145.144406]  ? pcpu_next_md_free_region+0x14c/0x2f0
[ 1145.149444]  mutex_lock_nested+0x16/0x20
[ 1145.153927]  ? mutex_lock_nested+0x16/0x20
[ 1145.158185]  hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1145.164869]  hashlimit_mt_check_v1+0x302/0x389
[ 1145.169465]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1145.174540]  ? xt_find_match+0x3e/0x1e0
[ 1145.178527]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1145.183574]  xt_check_match+0x254/0x530
[ 1145.187563]  ? xt_check_target+0x510/0x510
[ 1145.192080]  ? wait_for_completion+0x420/0x420
[ 1145.196675]  ? mutex_unlock+0xd/0x10
[ 1145.200699]  ? xt_find_match+0x178/0x1e0
[ 1145.204764]  ? xt_request_find_match+0x4b/0xe0
[ 1145.209354]  find_check_entry.isra.0+0x2f9/0x920
[ 1145.214473]  ? ipt_do_table+0x1770/0x1770
[ 1145.218632]  ? kfree+0x183/0x270
[ 1145.222298]  ? kvfree+0x4d/0x60
[ 1145.225589]  ? trace_hardirqs_on_caller+0x400/0x590
[ 1145.230918]  ? trace_hardirqs_on+0xd/0x10
[ 1145.235194]  translate_table+0xb3f/0x15a0
[ 1145.239360]  ? __do_replace+0x5b0/0x5b0
[ 1145.243649]  ? _copy_from_user+0x99/0x110
[ 1145.247810]  do_ipt_set_ctl+0x268/0x3ee
[ 1145.252087]  ? compat_do_ipt_set_ctl+0x150/0x150
[ 1145.256854]  ? mutex_unlock+0xd/0x10
[ 1145.260883]  ? nf_sockopt_find.constprop.0+0x1b7/0x230
[ 1145.266185]  nf_setsockopt+0x67/0xc0
[ 1145.269896]  ip_setsockopt+0x9b/0xb0
[ 1145.274028]  tcp_setsockopt+0x84/0xd0
[ 1145.277848]  sock_common_setsockopt+0x94/0xd0
[ 1145.282640]  SyS_setsockopt+0x13c/0x210
[ 1145.286637]  ? SyS_recv+0x40/0x40
[ 1145.291034]  ? do_syscall_64+0x53/0x640
[ 1145.295007]  ? SyS_recv+0x40/0x40
[ 1145.298461]  do_syscall_64+0x1e8/0x640
[ 1145.302666]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1145.307521]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 1145.313018] RIP: 0033:0x4472c9
[ 1145.316205] RSP: 002b:00007fe1126b2d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1145.324223] RAX: ffffffffffffffda RBX: 00000000006dbc48 RCX: 00000000004472c9
[ 1145.331532] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000004
[ 1145.338913] RBP: 00000000006dbc40 R08: 0000000000000318 R09: 0000000000000000
[ 1145.346639] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000006dbc4c
[ 1145.353958] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172
[ 1145.361567] INFO: task syz-executor484:7364 blocked for more than 140 seconds.
[ 1145.368944]       Not tainted 4.14.170-syzkaller #0
[ 1145.374268] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1145.382279] syz-executor484 D28976  7364   7308 0x00000004
[ 1145.387914] Call Trace:
[ 1145.390857]  __schedule+0x7b8/0x1cd0
[ 1145.394586]  ? __mutex_lock+0x737/0x1470
[ 1145.399102]  ? firmware_map_remove+0x196/0x196
[ 1145.404112]  schedule+0x92/0x1c0
[ 1145.407483]  schedule_preempt_disabled+0x13/0x20
[ 1145.412595]  __mutex_lock+0x73c/0x1470
[ 1145.416494]  ? hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1145.423398]  ? mutex_trylock+0x1c0/0x1c0
[ 1145.427463]  ? lock_acquire+0x16f/0x430
[ 1145.431689]  ? find_next_bit+0x28/0x30
[ 1145.435613]  mutex_lock_nested+0x16/0x20
[ 1145.440382]  ? mutex_lock_nested+0x16/0x20
[ 1145.444748]  hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1145.450713]  hashlimit_mt_check_v1+0x302/0x389
[ 1145.455306]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1145.460398]  ? xt_find_match+0x3e/0x1e0
[ 1145.464536]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1145.469293]  xt_check_match+0x254/0x530
[ 1145.473654]  ? xt_check_target+0x510/0x510
[ 1145.477908]  ? wait_for_completion+0x420/0x420
[ 1145.482999]  ? mutex_unlock+0xd/0x10
[ 1145.486727]  ? xt_find_match+0x178/0x1e0
[ 1145.491123]  ? xt_request_find_match+0x4b/0xe0
[ 1145.495720]  find_check_entry.isra.0+0x2f9/0x920
[ 1145.500808]  ? ipt_do_table+0x1770/0x1770
[ 1145.504963]  ? kfree+0x183/0x270
[ 1145.508345]  ? kvfree+0x4d/0x60
[ 1145.511977]  ? trace_hardirqs_on_caller+0x400/0x590
[ 1145.517006]  ? trace_hardirqs_on+0xd/0x10
[ 1145.521557]  translate_table+0xb3f/0x15a0
[ 1145.525720]  ? __do_replace+0x5b0/0x5b0
[ 1145.529715]  ? _copy_from_user+0x99/0x110
[ 1145.534234]  do_ipt_set_ctl+0x268/0x3ee
[ 1145.538216]  ? compat_do_ipt_set_ctl+0x150/0x150
[ 1145.543311]  ? mutex_unlock+0xd/0x10
[ 1145.547041]  ? nf_sockopt_find.constprop.0+0x1b7/0x230
[ 1145.553318]  nf_setsockopt+0x67/0xc0
[ 1145.557043]  ip_setsockopt+0x9b/0xb0
[ 1145.561182]  tcp_setsockopt+0x84/0xd0
[ 1145.564995]  sock_common_setsockopt+0x94/0xd0
[ 1145.569504]  SyS_setsockopt+0x13c/0x210
[ 1145.573879]  ? SyS_recv+0x40/0x40
[ 1145.577362]  ? do_syscall_64+0x53/0x640
[ 1145.581720]  ? SyS_recv+0x40/0x40
[ 1145.585211]  do_syscall_64+0x1e8/0x640
[ 1145.589115]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1145.594314]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 1145.599646] RIP: 0033:0x4472c9
[ 1145.603155] RSP: 002b:00007fe1126f4d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1145.610923] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004472c9
[ 1145.618195] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003
[ 1145.625829] RBP: 00000000006dbc20 R08: 0000000000000318 R09: 0000000000000000
[ 1145.633135] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000006dbc2c
[ 1145.640771] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172
[ 1145.648063] INFO: task syz-executor484:7372 blocked for more than 140 seconds.
[ 1145.655753]       Not tainted 4.14.170-syzkaller #0
[ 1145.660788] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1145.668753] syz-executor484 D28976  7372   7308 0x00000004
[ 1145.674784] Call Trace:
[ 1145.677381]  __schedule+0x7b8/0x1cd0
[ 1145.682144]  ? __mutex_lock+0x737/0x1470
[ 1145.686226]  ? firmware_map_remove+0x196/0x196
[ 1145.691175]  schedule+0x92/0x1c0
[ 1145.694546]  schedule_preempt_disabled+0x13/0x20
[ 1145.699307]  __mutex_lock+0x73c/0x1470
[ 1145.703524]  ? hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1145.709330]  ? mutex_trylock+0x1c0/0x1c0
[ 1145.713822]  ? pcpu_next_md_free_region+0x14c/0x2f0
[ 1145.718872]  mutex_lock_nested+0x16/0x20
[ 1145.723233]  ? mutex_lock_nested+0x16/0x20
[ 1145.727469]  hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1145.733367]  hashlimit_mt_check_v1+0x302/0x389
[ 1145.738091]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1145.743171]  ? xt_find_match+0x3e/0x1e0
[ 1145.747287]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1145.752356]  xt_check_match+0x254/0x530
[ 1145.756334]  ? xt_check_target+0x510/0x510
[ 1145.760799]  ? wait_for_completion+0x420/0x420
[ 1145.765408]  ? mutex_unlock+0xd/0x10
[ 1145.769129]  ? xt_find_match+0x178/0x1e0
[ 1145.773580]  ? xt_request_find_match+0x4b/0xe0
[ 1145.778178]  find_check_entry.isra.0+0x2f9/0x920
[ 1145.783247]  ? ipt_do_table+0x1770/0x1770
[ 1145.787405]  ? kfree+0x183/0x270
[ 1145.791079]  ? kvfree+0x4d/0x60
[ 1145.794359]  ? trace_hardirqs_on_caller+0x400/0x590
[ 1145.799581]  ? trace_hardirqs_on+0xd/0x10
[ 1145.804060]  translate_table+0xb3f/0x15a0
[ 1145.808336]  ? __do_replace+0x5b0/0x5b0
[ 1145.813313]  ? _copy_from_user+0x99/0x110
[ 1145.817473]  do_ipt_set_ctl+0x268/0x3ee
[ 1145.821761]  ? compat_do_ipt_set_ctl+0x150/0x150
[ 1145.826527]  ? mutex_unlock+0xd/0x10
[ 1145.830555]  ? nf_sockopt_find.constprop.0+0x1b7/0x230
[ 1145.835846]  nf_setsockopt+0x67/0xc0
[ 1145.839568]  ip_setsockopt+0x9b/0xb0
[ 1145.843623]  tcp_setsockopt+0x84/0xd0
[ 1145.847426]  sock_common_setsockopt+0x94/0xd0
[ 1145.852252]  SyS_setsockopt+0x13c/0x210
[ 1145.856241]  ? SyS_recv+0x40/0x40
[ 1145.859702]  ? do_syscall_64+0x53/0x640
[ 1145.864055]  ? SyS_recv+0x40/0x40
[ 1145.867523]  do_syscall_64+0x1e8/0x640
[ 1145.871726]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1145.876593]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 1145.882201] RIP: 0033:0x4472c9
[ 1145.885408] RSP: 002b:00007fe1126b2d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1145.893454] RAX: ffffffffffffffda RBX: 00000000006dbc48 RCX: 00000000004472c9
[ 1145.900763] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003
[ 1145.908146] RBP: 00000000006dbc40 R08: 0000000000000318 R09: 0000000000000000
[ 1145.916021] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000006dbc4c
[ 1145.923343] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172
[ 1145.931096] INFO: task syz-executor484:7361 blocked for more than 140 seconds.
[ 1145.938461]       Not tainted 4.14.170-syzkaller #0
[ 1145.944762] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1145.952874] syz-executor484 D28976  7361   7306 0x00000004
[ 1145.958514] Call Trace:
[ 1145.961455]  __schedule+0x7b8/0x1cd0
[ 1145.965286]  ? __mutex_lock+0x737/0x1470
[ 1145.969468]  ? firmware_map_remove+0x196/0x196
[ 1145.974409]  schedule+0x92/0x1c0
[ 1145.977816]  schedule_preempt_disabled+0x13/0x20
[ 1145.982926]  __mutex_lock+0x73c/0x1470
[ 1145.986823]  ? hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1145.993045]  ? mutex_trylock+0x1c0/0x1c0
[ 1145.997123]  ? pcpu_next_md_free_region+0x14c/0x2f0
[ 1146.002518]  mutex_lock_nested+0x16/0x20
[ 1146.006602]  ? mutex_lock_nested+0x16/0x20
[ 1146.011163]  hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1146.016921]  hashlimit_mt_check_v1+0x302/0x389
[ 1146.021849]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1146.026624]  ? xt_find_match+0x3e/0x1e0
[ 1146.031005]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1146.035779]  xt_check_match+0x254/0x530
[ 1146.039761]  ? xt_check_target+0x510/0x510
[ 1146.044344]  ? wait_for_completion+0x420/0x420
[ 1146.048949]  ? mutex_unlock+0xd/0x10
[ 1146.053068]  ? xt_find_match+0x178/0x1e0
[ 1146.057158]  ? xt_request_find_match+0x4b/0xe0
[ 1146.062237]  find_check_entry.isra.0+0x2f9/0x920
[ 1146.067012]  ? ipt_do_table+0x1770/0x1770
[ 1146.072316]  ? kfree+0x183/0x270
[ 1146.075694]  ? kvfree+0x4d/0x60
[ 1146.078976]  ? trace_hardirqs_on_caller+0x400/0x590
[ 1146.084424]  ? trace_hardirqs_on+0xd/0x10
[ 1146.088601]  translate_table+0xb3f/0x15a0
[ 1146.093093]  ? __do_replace+0x5b0/0x5b0
[ 1146.097089]  ? _copy_from_user+0x99/0x110
[ 1146.101789]  do_ipt_set_ctl+0x268/0x3ee
[ 1146.105771]  ? compat_do_ipt_set_ctl+0x150/0x150
[ 1146.110896]  ? mutex_unlock+0xd/0x10
[ 1146.114772]  ? nf_sockopt_find.constprop.0+0x1b7/0x230
[ 1146.120378]  nf_setsockopt+0x67/0xc0
[ 1146.124114]  ip_setsockopt+0x9b/0xb0
[ 1146.127841]  tcp_setsockopt+0x84/0xd0
[ 1146.131993]  sock_common_setsockopt+0x94/0xd0
[ 1146.136518]  SyS_setsockopt+0x13c/0x210
[ 1146.140813]  ? SyS_recv+0x40/0x40
[ 1146.144277]  ? do_syscall_64+0x53/0x640
[ 1146.148249]  ? SyS_recv+0x40/0x40
[ 1146.152191]  do_syscall_64+0x1e8/0x640
[ 1146.156082]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1146.161360]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 1146.166554] RIP: 0033:0x4472c9
[ 1146.169748] RSP: 002b:00007fe1126f4d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1146.177806] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004472c9
[ 1146.185159] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003
[ 1146.192903] RBP: 00000000006dbc20 R08: 0000000000000318 R09: 0000000000000000
[ 1146.200871] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000006dbc2c
[ 1146.208158] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172
[ 1146.215818] INFO: task syz-executor484:7370 blocked for more than 140 seconds.
[ 1146.223228]       Not tainted 4.14.170-syzkaller #0
[ 1146.228233] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1146.236542] syz-executor484 D28392  7370   7306 0x00000004
[ 1146.242215] Call Trace:
[ 1146.244818]  __schedule+0x7b8/0x1cd0
[ 1146.248542]  ? __mutex_lock+0x737/0x1470
[ 1146.252966]  ? firmware_map_remove+0x196/0x196
[ 1146.257558]  schedule+0x92/0x1c0
[ 1146.261158]  schedule_preempt_disabled+0x13/0x20
[ 1146.265928]  __mutex_lock+0x73c/0x1470
[ 1146.269827]  ? hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1146.276027]  ? mutex_trylock+0x1c0/0x1c0
[ 1146.280124]  ? pcpu_next_md_free_region+0x14c/0x2f0
[ 1146.285146]  mutex_lock_nested+0x16/0x20
[ 1146.289241]  ? mutex_lock_nested+0x16/0x20
[ 1146.293961]  hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1146.299610]  hashlimit_mt_check_v1+0x302/0x389
[ 1146.305056]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1146.309824]  ? xt_find_match+0x3e/0x1e0
[ 1146.314080]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1146.318856]  xt_check_match+0x254/0x530
[ 1146.323153]  ? xt_check_target+0x510/0x510
[ 1146.327389]  ? wait_for_completion+0x420/0x420
[ 1146.333035]  ? mutex_unlock+0xd/0x10
[ 1146.336785]  ? xt_find_match+0x178/0x1e0
[ 1146.341197]  ? xt_request_find_match+0x4b/0xe0
[ 1146.345782]  find_check_entry.isra.0+0x2f9/0x920
[ 1146.350856]  ? ipt_do_table+0x1770/0x1770
[ 1146.355026]  ? kfree+0x183/0x270
[ 1146.358390]  ? kvfree+0x4d/0x60
[ 1146.361990]  ? trace_hardirqs_on_caller+0x400/0x590
[ 1146.367014]  ? trace_hardirqs_on+0xd/0x10
[ 1146.371411]  translate_table+0xb3f/0x15a0
[ 1146.375583]  ? __do_replace+0x5b0/0x5b0
[ 1146.379556]  ? _copy_from_user+0x99/0x110
[ 1146.384131]  do_ipt_set_ctl+0x268/0x3ee
[ 1146.388141]  ? compat_do_ipt_set_ctl+0x150/0x150
[ 1146.393237]  ? mutex_unlock+0xd/0x10
[ 1146.396958]  ? nf_sockopt_find.constprop.0+0x1b7/0x230
[ 1146.402492]  nf_setsockopt+0x67/0xc0
[ 1146.406212]  ip_setsockopt+0x9b/0xb0
[ 1146.410357]  tcp_setsockopt+0x84/0xd0
[ 1146.414167]  sock_common_setsockopt+0x94/0xd0
[ 1146.418676]  SyS_setsockopt+0x13c/0x210
[ 1146.422972]  ? SyS_recv+0x40/0x40
[ 1146.426434]  ? do_syscall_64+0x53/0x640
[ 1146.430631]  ? SyS_recv+0x40/0x40
[ 1146.434086]  do_syscall_64+0x1e8/0x640
[ 1146.437990]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1146.443279]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 1146.448499] RIP: 0033:0x4472c9
[ 1146.451988] RSP: 002b:00007fe1126b2d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1146.459714] RAX: ffffffffffffffda RBX: 00000000006dbc48 RCX: 00000000004472c9
[ 1146.468001] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000004
[ 1146.475344] RBP: 00000000006dbc40 R08: 0000000000000318 R09: 0000000000000000
[ 1146.482982] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000006dbc4c
[ 1146.490320] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172
[ 1146.497614] INFO: task syz-executor484:7362 blocked for more than 140 seconds.
[ 1146.505349]       Not tainted 4.14.170-syzkaller #0
[ 1146.510406] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1146.518381] syz-executor484 D28976  7362   7304 0x00000004
[ 1146.524503] Call Trace:
[ 1146.527098]  __schedule+0x7b8/0x1cd0
[ 1146.531068]  ? __mutex_lock+0x737/0x1470
[ 1146.535146]  ? firmware_map_remove+0x196/0x196
[ 1146.539736]  schedule+0x92/0x1c0
[ 1146.543510]  schedule_preempt_disabled+0x13/0x20
[ 1146.548391]  __mutex_lock+0x73c/0x1470
[ 1146.552641]  ? hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1146.558456]  ? mutex_trylock+0x1c0/0x1c0
[ 1146.562871]  ? pcpu_next_md_free_region+0x14c/0x2f0
[ 1146.567911]  mutex_lock_nested+0x16/0x20
[ 1146.572376]  ? mutex_lock_nested+0x16/0x20
[ 1146.576633]  hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1146.582589]  hashlimit_mt_check_v1+0x302/0x389
[ 1146.587175]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1146.592921]  ? xt_find_match+0x3e/0x1e0
[ 1146.596918]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1146.602107]  xt_check_match+0x254/0x530
[ 1146.606095]  ? xt_check_target+0x510/0x510
[ 1146.610703]  ? wait_for_completion+0x420/0x420
[ 1146.615305]  ? mutex_unlock+0xd/0x10
[ 1146.619032]  ? xt_find_match+0x178/0x1e0
[ 1146.623413]  ? xt_request_find_match+0x4b/0xe0
[ 1146.628109]  find_check_entry.isra.0+0x2f9/0x920
[ 1146.633187]  ? ipt_do_table+0x1770/0x1770
[ 1146.637490]  ? kfree+0x183/0x270
[ 1146.641152]  ? kvfree+0x4d/0x60
[ 1146.644447]  ? trace_hardirqs_on_caller+0x400/0x590
[ 1146.649510]  ? trace_hardirqs_on+0xd/0x10
[ 1146.654014]  translate_table+0xb3f/0x15a0
[ 1146.658205]  ? __do_replace+0x5b0/0x5b0
[ 1146.662478]  ? _copy_from_user+0x99/0x110
[ 1146.666639]  do_ipt_set_ctl+0x268/0x3ee
[ 1146.670910]  ? compat_do_ipt_set_ctl+0x150/0x150
[ 1146.675685]  ? mutex_unlock+0xd/0x10
[ 1146.679400]  ? nf_sockopt_find.constprop.0+0x1b7/0x230
[ 1146.685057]  nf_setsockopt+0x67/0xc0
[ 1146.688775]  ip_setsockopt+0x9b/0xb0
[ 1146.692835]  tcp_setsockopt+0x84/0xd0
[ 1146.696659]  sock_common_setsockopt+0x94/0xd0
[ 1146.701426]  SyS_setsockopt+0x13c/0x210
[ 1146.705419]  ? SyS_recv+0x40/0x40
[ 1146.708881]  ? do_syscall_64+0x53/0x640
[ 1146.713234]  ? SyS_recv+0x40/0x40
[ 1146.716695]  do_syscall_64+0x1e8/0x640
[ 1146.721665]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1146.726626]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 1146.732128] RIP: 0033:0x4472c9
[ 1146.735316] RSP: 002b:00007fe1126f4d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1146.743466] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004472c9
[ 1146.750784] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003
[ 1146.758052] RBP: 00000000006dbc20 R08: 0000000000000318 R09: 0000000000000000
[ 1146.765817] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000006dbc2c
[ 1146.773157] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172
[ 1146.780875] INFO: task syz-executor484:7374 blocked for more than 140 seconds.
[ 1146.788237]       Not tainted 4.14.170-syzkaller #0
[ 1146.793543] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1146.801547] syz-executor484 D28192  7374   7304 0x00000004
[ 1146.807185] Call Trace:
[ 1146.809779]  __schedule+0x7b8/0x1cd0
[ 1146.813916]  ? __mutex_lock+0x737/0x1470
[ 1146.818000]  ? firmware_map_remove+0x196/0x196
[ 1146.822906]  schedule+0x92/0x1c0
[ 1146.826277]  schedule_preempt_disabled+0x13/0x20
[ 1146.831496]  __mutex_lock+0x73c/0x1470
[ 1146.835405]  ? hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1146.841616]  ? mutex_trylock+0x1c0/0x1c0
[ 1146.845704]  ? pcpu_next_md_free_region+0x14c/0x2f0
[ 1146.851685]  mutex_lock_nested+0x16/0x20
[ 1146.855766]  ? mutex_lock_nested+0x16/0x20
[ 1146.860000]  hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1146.865935]  hashlimit_mt_check_v1+0x302/0x389
[ 1146.870795]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1146.875553]  ? xt_find_match+0x3e/0x1e0
[ 1146.879641]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1146.884704]  xt_check_match+0x254/0x530
[ 1146.888715]  ? xt_check_target+0x510/0x510
[ 1146.893240]  ? wait_for_completion+0x420/0x420
[ 1146.897840]  ? mutex_unlock+0xd/0x10
[ 1146.901828]  ? xt_find_match+0x178/0x1e0
[ 1146.905900]  ? xt_request_find_match+0x4b/0xe0
[ 1146.910816]  find_check_entry.isra.0+0x2f9/0x920
[ 1146.915603]  ? ipt_do_table+0x1770/0x1770
[ 1146.919844]  ? kfree+0x183/0x270
[ 1146.923517]  ? kvfree+0x4d/0x60
[ 1146.926820]  ? trace_hardirqs_on_caller+0x400/0x590
[ 1146.932274]  ? trace_hardirqs_on+0xd/0x10
[ 1146.936442]  translate_table+0xb3f/0x15a0
[ 1146.940892]  ? __do_replace+0x5b0/0x5b0
[ 1146.944880]  ? _copy_from_user+0x99/0x110
[ 1146.949038]  do_ipt_set_ctl+0x268/0x3ee
[ 1146.953398]  ? compat_do_ipt_set_ctl+0x150/0x150
[ 1146.958183]  ? mutex_unlock+0xd/0x10
[ 1146.962213]  ? nf_sockopt_find.constprop.0+0x1b7/0x230
[ 1146.967644]  nf_setsockopt+0x67/0xc0
[ 1146.971684]  ip_setsockopt+0x9b/0xb0
[ 1146.975412]  tcp_setsockopt+0x84/0xd0
[ 1146.979225]  sock_common_setsockopt+0x94/0xd0
[ 1146.984732]  SyS_setsockopt+0x13c/0x210
[ 1146.988715]  ? SyS_recv+0x40/0x40
[ 1146.992594]  ? do_syscall_64+0x53/0x640
[ 1146.996582]  ? SyS_recv+0x40/0x40
[ 1147.000340]  do_syscall_64+0x1e8/0x640
[ 1147.004239]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1147.009095]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 1147.014743] RIP: 0033:0x4472c9
[ 1147.017931] RSP: 002b:00007fe1126b2d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1147.026044] RAX: ffffffffffffffda RBX: 00000000006dbc48 RCX: 00000000004472c9
[ 1147.033757] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000004
[ 1147.041468] RBP: 00000000006dbc40 R08: 0000000000000318 R09: 0000000000000000
[ 1147.048779] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000006dbc4c
[ 1147.056412] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172
[ 1147.063853] INFO: task syz-executor484:7366 blocked for more than 140 seconds.
[ 1147.071546]       Not tainted 4.14.170-syzkaller #0
[ 1147.076563] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1147.084819] syz-executor484 D28392  7366   7303 0x00000004
[ 1147.090515] Call Trace:
[ 1147.093106]  __schedule+0x7b8/0x1cd0
[ 1147.096810]  ? __mutex_lock+0x737/0x1470
[ 1147.101248]  ? firmware_map_remove+0x196/0x196
[ 1147.105841]  schedule+0x92/0x1c0
[ 1147.109218]  schedule_preempt_disabled+0x13/0x20
[ 1147.114952]  __mutex_lock+0x73c/0x1470
[ 1147.118847]  ? hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.124880]  ? mutex_trylock+0x1c0/0x1c0
[ 1147.128961]  ? pcpu_next_md_free_region+0x14c/0x2f0
[ 1147.134332]  mutex_lock_nested+0x16/0x20
[ 1147.138395]  ? mutex_lock_nested+0x16/0x20
[ 1147.143030]  hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.148674]  hashlimit_mt_check_v1+0x302/0x389
[ 1147.153561]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1147.158445]  ? xt_find_match+0x3e/0x1e0
[ 1147.162747]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1147.167513]  xt_check_match+0x254/0x530
[ 1147.171744]  ? xt_check_target+0x510/0x510
[ 1147.175982]  ? wait_for_completion+0x420/0x420
[ 1147.181102]  ? mutex_unlock+0xd/0x10
[ 1147.184819]  ? xt_find_match+0x178/0x1e0
[ 1147.188918]  ? xt_request_find_match+0x4b/0xe0
[ 1147.193811]  find_check_entry.isra.0+0x2f9/0x920
[ 1147.198592]  ? ipt_do_table+0x1770/0x1770
[ 1147.203010]  ? kfree+0x183/0x270
[ 1147.206385]  ? kvfree+0x4d/0x60
[ 1147.209675]  ? trace_hardirqs_on_caller+0x400/0x590
[ 1147.214999]  ? trace_hardirqs_on+0xd/0x10
[ 1147.219164]  translate_table+0xb3f/0x15a0
[ 1147.223764]  ? __do_replace+0x5b0/0x5b0
[ 1147.227760]  ? _copy_from_user+0x99/0x110
[ 1147.232306]  do_ipt_set_ctl+0x268/0x3ee
[ 1147.236293]  ? compat_do_ipt_set_ctl+0x150/0x150
[ 1147.242002]  ? mutex_unlock+0xd/0x10
[ 1147.245733]  ? nf_sockopt_find.constprop.0+0x1b7/0x230
[ 1147.251318]  nf_setsockopt+0x67/0xc0
[ 1147.255045]  ip_setsockopt+0x9b/0xb0
[ 1147.258755]  tcp_setsockopt+0x84/0xd0
[ 1147.262868]  sock_common_setsockopt+0x94/0xd0
[ 1147.267367]  SyS_setsockopt+0x13c/0x210
[ 1147.271789]  ? SyS_recv+0x40/0x40
[ 1147.275258]  ? do_syscall_64+0x53/0x640
[ 1147.279254]  ? SyS_recv+0x40/0x40
[ 1147.283301]  do_syscall_64+0x1e8/0x640
[ 1147.288504]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1147.293683]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 1147.298891] RIP: 0033:0x4472c9
[ 1147.302367] RSP: 002b:00007fe1126f4d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1147.310236] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004472c9
[ 1147.317511] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003
[ 1147.325155] RBP: 00000000006dbc20 R08: 0000000000000318 R09: 0000000000000000
[ 1147.332473] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000006dbc2c
[ 1147.339765] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172
[ 1147.347409] INFO: task syz-executor484:7376 blocked for more than 140 seconds.
[ 1147.354842]       Not tainted 4.14.170-syzkaller #0
[ 1147.359849] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1147.369185] syz-executor484 D28976  7376   7303 0x00000004
[ 1147.375554] Call Trace:
[ 1147.378160]  __schedule+0x7b8/0x1cd0
[ 1147.382287]  ? __mutex_lock+0x737/0x1470
[ 1147.386359]  ? firmware_map_remove+0x196/0x196
[ 1147.391290]  schedule+0x92/0x1c0
[ 1147.394661]  schedule_preempt_disabled+0x13/0x20
[ 1147.399413]  __mutex_lock+0x73c/0x1470
[ 1147.403625]  ? hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.409433]  ? mutex_trylock+0x1c0/0x1c0
[ 1147.413849]  ? pcpu_next_md_free_region+0x14c/0x2f0
[ 1147.418902]  mutex_lock_nested+0x16/0x20
[ 1147.423387]  ? mutex_lock_nested+0x16/0x20
[ 1147.427850]  hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.433803]  hashlimit_mt_check_v1+0x302/0x389
[ 1147.438486]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1147.443595]  ? xt_find_match+0x3e/0x1e0
[ 1147.447598]  ? hashlimit_mt_check_v2+0x390/0x390
[ 1147.452685]  xt_check_match+0x254/0x530
[ 1147.456676]  ? xt_check_target+0x510/0x510
[ 1147.461285]  ? wait_for_completion+0x420/0x420
[ 1147.465894]  ? mutex_unlock+0xd/0x10
[ 1147.469609]  ? xt_find_match+0x178/0x1e0
[ 1147.474103]  ? xt_request_find_match+0x4b/0xe0
[ 1147.478704]  find_check_entry.isra.0+0x2f9/0x920
[ 1147.483811]  ? ipt_do_table+0x1770/0x1770
[ 1147.487974]  ? kfree+0x183/0x270
[ 1147.491687]  ? kvfree+0x4d/0x60
[ 1147.495087]  ? trace_hardirqs_on_caller+0x400/0x590
[ 1147.501069]  ? trace_hardirqs_on+0xd/0x10
[ 1147.505228]  translate_table+0xb3f/0x15a0
[ 1147.509486]  ? __do_replace+0x5b0/0x5b0
[ 1147.513944]  ? _copy_from_user+0x99/0x110
[ 1147.518117]  do_ipt_set_ctl+0x268/0x3ee
[ 1147.522621]  ? compat_do_ipt_set_ctl+0x150/0x150
[ 1147.528104]  ? mutex_unlock+0xd/0x10
[ 1147.532313]  ? nf_sockopt_find.constprop.0+0x1b7/0x230
[ 1147.537606]  nf_setsockopt+0x67/0xc0
[ 1147.541648]  ip_setsockopt+0x9b/0xb0
[ 1147.545366]  tcp_setsockopt+0x84/0xd0
[ 1147.549196]  sock_common_setsockopt+0x94/0xd0
[ 1147.554068]  SyS_setsockopt+0x13c/0x210
[ 1147.558070]  ? SyS_recv+0x40/0x40
[ 1147.561883]  ? do_syscall_64+0x53/0x640
[ 1147.565871]  ? SyS_recv+0x40/0x40
[ 1147.569333]  do_syscall_64+0x1e8/0x640
[ 1147.573598]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1147.578459]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 1147.583987] RIP: 0033:0x4472c9
[ 1147.587189] RSP: 002b:00007fe1126b2d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1147.595342] RAX: ffffffffffffffda RBX: 00000000006dbc48 RCX: 00000000004472c9
[ 1147.602681] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003
[ 1147.609957] RBP: 00000000006dbc40 R08: 0000000000000318 R09: 0000000000000000
[ 1147.617757] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000006dbc4c
[ 1147.625144] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172
[ 1147.633525] 
[ 1147.633525] Showing all locks held in the system:
[ 1147.639884] 1 lock held by khungtaskd/1055:
[ 1147.644330]  #0:  (tasklist_lock){.+.+}, at: [<ffffffff81488cf8>] debug_show_all_locks+0x7f/0x21f
[ 1147.653468] 2 locks held by getty/7275:
[ 1147.657434]  #0:  (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40
[ 1147.666173]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0
[ 1147.675617] 2 locks held by getty/7276:
[ 1147.679595]  #0:  (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40
[ 1147.688356]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0
[ 1147.697733] 2 locks held by getty/7277:
[ 1147.701767]  #0:  (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40
[ 1147.710498]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0
[ 1147.719806] 2 locks held by getty/7278:
[ 1147.723830]  #0:  (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40
[ 1147.732597]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0
[ 1147.741946] 2 locks held by getty/7279:
[ 1147.745921]  #0:  (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40
[ 1147.754796]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0
[ 1147.764168] 2 locks held by getty/7280:
[ 1147.768134]  #0:  (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40
[ 1147.776896]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0
[ 1147.786274] 2 locks held by getty/7281:
[ 1147.790275]  #0:  (&tty->ldisc_sem){++++}, at: [<ffffffff866928d3>] ldsem_down_read+0x33/0x40
[ 1147.798971]  #1:  (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff834c38d6>] n_tty_read+0x1e6/0x17d0
[ 1147.808334] 1 lock held by syz-executor484/7365:
[ 1147.813163]  #0:  (hashlimit_mutex){+.+.}, at: [<ffffffff854ff888>] hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.823656] 1 lock held by syz-executor484/7368:
[ 1147.828420]  #0:  (hashlimit_mutex){+.+.}, at: [<ffffffff854ff888>] hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.838958] 1 lock held by syz-executor484/7364:
[ 1147.843762]  #0:  (hashlimit_mutex){+.+.}, at: [<ffffffff854ff888>] hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.854274] 1 lock held by syz-executor484/7372:
[ 1147.859034]  #0:  (hashlimit_mutex){+.+.}, at: [<ffffffff854ff888>] hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.869678] 1 lock held by syz-executor484/7361:
[ 1147.874522]  #0:  (hashlimit_mutex){+.+.}, at: [<ffffffff854ff888>] hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.885077] 1 lock held by syz-executor484/7370:
[ 1147.889835]  #0:  (hashlimit_mutex){+.+.}, at: [<ffffffff854ff888>] hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.900327] 1 lock held by syz-executor484/7362:
[ 1147.905078]  #0:  (hashlimit_mutex){+.+.}, at: [<ffffffff854ff888>] hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.916484] 1 lock held by syz-executor484/7374:
[ 1147.921290]  #0:  (hashlimit_mutex){+.+.}, at: [<ffffffff854ff888>] hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.931777] 1 lock held by syz-executor484/7366:
[ 1147.936537]  #0:  (hashlimit_mutex){+.+.}, at: [<ffffffff854ff888>] hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.947074] 1 lock held by syz-executor484/7376:
[ 1147.951872]  #0:  (hashlimit_mutex){+.+.}, at: [<ffffffff854ff888>] hashlimit_mt_check_common.isra.0+0x2b8/0x11b0
[ 1147.962363] 
[ 1147.964022] =============================================
[ 1147.964022] 
[ 1147.971797] NMI backtrace for cpu 1
[ 1147.975431] CPU: 1 PID: 1055 Comm: khungtaskd Not tainted 4.14.170-syzkaller #0
[ 1147.982882] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1147.992339] Call Trace:
[ 1147.995059]  dump_stack+0x142/0x197
[ 1147.998687]  nmi_cpu_backtrace.cold+0x57/0x94
[ 1148.003281]  ? irq_force_complete_move.cold+0x7d/0x7d
[ 1148.008470]  nmi_trigger_cpumask_backtrace+0x141/0x189
[ 1148.013761]  arch_trigger_cpumask_backtrace+0x14/0x20
[ 1148.019029]  watchdog+0x5e7/0xb90
[ 1148.022528]  kthread+0x319/0x430
[ 1148.025896]  ? hungtask_pm_notify+0x50/0x50
[ 1148.030226]  ? kthread_create_on_node+0xd0/0xd0
[ 1148.034906]  ret_from_fork+0x24/0x30
[ 1148.038826] Sending NMI from CPU 1 to CPUs 0:
[ 1148.043934] NMI backtrace for cpu 0
[ 1148.043938] CPU: 0 PID: 7356 Comm: syz-executor484 Not tainted 4.14.170-syzkaller #0
[ 1148.043942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1148.043944] task: ffff88808df025c0 task.stack: ffff888071b88000
[ 1148.043947] RIP: 0010:trace_hardirqs_on_caller+0x6b/0x590
[ 1148.043949] RSP: 0018:ffff888071b8f820 EFLAGS: 00000803
[ 1148.043954] RAX: dffffc0000000000 RBX: ffff88808df025c0 RCX: 1ffffffff1067aa8
[ 1148.043957] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88808df02e3c
[ 1148.043959] RBP: ffff888071b8f830 R08: 0000000000000001 R09: 0000000000000001
[ 1148.043962] R10: 0000000000000000 R11: ffff88808df025c0 R12: ffffffff8138d779
[ 1148.043965] R13: dffffc0000000000 R14: ffffc90005e2c000 R15: ffffffff854f9a60
[ 1148.043969] FS:  00007fe1126f5700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
[ 1148.043972] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1148.043975] CR2: 00007f4500005198 CR3: 000000009faeb000 CR4: 00000000001406f0
[ 1148.043978] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1148.043980] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1148.043982] Call Trace:
[ 1148.043985]  ? htable_selective_cleanup+0x204/0x300
[ 1148.043987]  trace_hardirqs_on+0xd/0x10
[ 1148.043989]  __local_bh_enable_ip+0x99/0x1a0
[ 1148.043991]  _raw_spin_unlock_bh+0x31/0x40
[ 1148.043993]  htable_selective_cleanup+0x204/0x300
[ 1148.043995]  htable_put+0x164/0x210
[ 1148.043998]  ? hashlimit_mt_destroy_v2+0x70/0x70
[ 1148.044000]  hashlimit_mt_destroy_v1+0x50/0x70
[ 1148.044002]  cleanup_match+0xc2/0x140
[ 1148.044004]  ? icmp_checkentry+0x90/0x90
[ 1148.044006]  ? xt_request_find_target+0x4b/0xe0
[ 1148.044008]  find_check_entry.isra.0+0x3fe/0x920
[ 1148.044010]  ? ipt_do_table+0x1770/0x1770
[ 1148.044012]  ? kfree+0x183/0x270
[ 1148.044014]  ? kvfree+0x4d/0x60
[ 1148.044016]  translate_table+0xb3f/0x15a0
[ 1148.044018]  ? __do_replace+0x5b0/0x5b0
[ 1148.044020]  ? _copy_from_user+0x99/0x110
[ 1148.044022]  do_ipt_set_ctl+0x268/0x3ee
[ 1148.044024]  ? compat_do_ipt_set_ctl+0x150/0x150
[ 1148.044026]  ? mutex_unlock+0xd/0x10
[ 1148.044028]  ? nf_sockopt_find.constprop.0+0x1b7/0x230
[ 1148.044030]  nf_setsockopt+0x67/0xc0
[ 1148.044032]  ip_setsockopt+0x9b/0xb0
[ 1148.044034]  tcp_setsockopt+0x84/0xd0
[ 1148.044037]  sock_common_setsockopt+0x94/0xd0
[ 1148.044039]  SyS_setsockopt+0x13c/0x210
[ 1148.044040]  ? SyS_recv+0x40/0x40
[ 1148.044042]  ? do_syscall_64+0x53/0x640
[ 1148.044044]  ? SyS_recv+0x40/0x40
[ 1148.044046]  do_syscall_64+0x1e8/0x640
[ 1148.044054]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1148.044057]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 1148.044058] RIP: 0033:0x4472c9
[ 1148.044061] RSP: 002b:00007fe1126f4d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 1148.044069] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 00000000004472c9
[ 1148.044072] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003
[ 1148.044075] RBP: 00000000006dbc20 R08: 0000000000000318 R09: 0000000000000000
[ 1148.044078] R10: 0000000020000540 R11: 0000000000000246 R12: 00000000006dbc2c
[ 1148.044081] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172
[ 1148.044083] Code: 0f 84 68 02 00 00 65 48 8b 1c 25 40 ee 01 00 48 8d bb 7c 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 19 04 00 00 
[ 1148.044507] Kernel panic - not syncing: hung_task: blocked tasks
[ 1148.369021] CPU: 1 PID: 1055 Comm: khungtaskd Not tainted 4.14.170-syzkaller #0
[ 1148.376487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1148.385849] Call Trace:
[ 1148.388458]  dump_stack+0x142/0x197
[ 1148.392100]  panic+0x1f9/0x42d
[ 1148.395297]  ? add_taint.cold+0x16/0x16
[ 1148.399298]  ? irq_force_complete_move.cold+0x7d/0x7d
[ 1148.404589]  watchdog+0x5f8/0xb90
[ 1148.408049]  kthread+0x319/0x430
[ 1148.411426]  ? hungtask_pm_notify+0x50/0x50
[ 1148.415741]  ? kthread_create_on_node+0xd0/0xd0
[ 1148.420421]  ret_from_fork+0x24/0x30
[ 1148.425813] Kernel Offset: disabled
[ 1148.429549] Rebooting in 86400 seconds..