[ 52.182797] audit: type=1800 audit(1580830853.567:29): pid=8112 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2447 res=0 [ 52.221174] audit: type=1800 audit(1580830853.567:30): pid=8112 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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 Warning: Permanently added '10.128.0.244' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 775.007487] kauditd_printk_skb: 5 callbacks suppressed [ 775.007505] audit: type=1400 audit(1580831576.397:36): avc: denied { map } for pid=8297 comm="syz-executor200" path="/root/syz-executor200927537" 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 executing program executing program [ 779.818206] xt_CT: You must specify a L4 protocol and not use inversions on it [ 779.823853] xt_CT: You must specify a L4 protocol and not use inversions on it [ 779.826312] xt_CT: You must specify a L4 protocol and not use inversions on it [ 779.842605] xt_CT: You must specify a L4 protocol and not use inversions on it [ 779.843139] xt_CT: You must specify a L4 protocol and not use inversions on it [ 779.854693] xt_CT: You must specify a L4 protocol and not use inversions on it executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 779.863414] xt_CT: You must specify a L4 protocol and not use inversions on it [ 779.879864] xt_CT: You must specify a L4 protocol and not use inversions on it [ 779.889334] xt_CT: You must specify a L4 protocol and not use inversions on it [ 779.895770] xt_CT: You must specify a L4 protocol and not use inversions on it [ 928.834656] INFO: task syz-executor200:8325 blocked for more than 140 seconds. [ 928.842316] Not tainted 4.19.101-syzkaller #0 [ 928.850310] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 928.858759] syz-executor200 D27680 8325 8298 0x00000004 [ 928.864601] Call Trace: [ 928.868087] __schedule+0x866/0x1dc0 [ 928.872030] ? firmware_map_remove+0x1a6/0x1a6 [ 928.883512] ? mark_held_locks+0x100/0x100 [ 928.888248] schedule+0x92/0x1c0 [ 928.891725] schedule_timeout+0x8c8/0xfc0 [ 928.896440] ? wait_for_completion+0x294/0x440 [ 928.901053] ? find_held_lock+0x35/0x130 [ 928.905762] ? usleep_range+0x170/0x170 [ 928.909828] ? mark_held_locks+0xb1/0x100 [ 928.914033] ? _raw_spin_unlock_irq+0x28/0x90 [ 928.919031] ? wait_for_completion+0x294/0x440 [ 928.923729] ? _raw_spin_unlock_irq+0x28/0x90 [ 928.928753] ? lockdep_hardirqs_on+0x415/0x5d0 [ 928.933563] ? trace_hardirqs_on+0x67/0x220 [ 928.938600] wait_for_completion+0x29c/0x440 [ 928.943036] ? wait_for_completion_interruptible+0x4b0/0x4b0 [ 928.949326] ? preempt_schedule_common+0x4f/0xe0 [ 928.954187] ? wake_up_q+0x100/0x100 [ 928.958413] ? ___preempt_schedule+0x16/0x18 [ 928.965605] __flush_work+0x49f/0x870 [ 928.969446] ? insert_work+0x3a0/0x3a0 [ 928.973376] ? flush_workqueue_prep_pwqs+0x590/0x590 [ 928.979284] ? __cancel_work_timer+0x1d3/0x520 [ 928.983965] ? cancel_delayed_work_sync+0x1b/0x20 [ 928.989498] ? __cancel_work_timer+0x1d3/0x520 [ 928.994113] ? lockdep_hardirqs_on+0x415/0x5d0 [ 928.999141] ? trace_hardirqs_on+0x67/0x220 [ 929.003541] __cancel_work_timer+0x3bf/0x520 [ 929.009210] ? try_to_grab_pending+0x710/0x710 [ 929.013931] ? kasan_check_write+0x14/0x20 [ 929.018941] ? xt_ct_tg_check_v1+0x7c/0xa0 [ 929.023208] ? xt_ct_tg_check_v2+0xa0/0xa0 [ 929.027877] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 929.033458] cancel_delayed_work_sync+0x1b/0x20 [ 929.038739] htable_put+0x15f/0x220 [ 929.042530] ? htable_put+0x220/0x220 [ 929.046781] hashlimit_mt_destroy+0x56/0x70 [ 929.051326] cleanup_match+0xde/0x170 [ 929.055567] ? icmp_checkentry+0xa0/0xa0 [ 929.059790] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 929.065815] find_check_entry.isra.0+0x454/0x920 [ 929.070631] ? ipt_do_table+0x1b30/0x1b30 [ 929.075238] ? lockdep_hardirqs_on+0x415/0x5d0 [ 929.079962] ? kvfree+0x61/0x70 [ 929.083286] translate_table+0xcb4/0x17d0 [ 929.088073] ? alloc_counters.isra.0+0x680/0x680 [ 929.092868] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 929.099191] ? _copy_from_user+0xdd/0x150 [ 929.103393] do_ipt_set_ctl+0x2ef/0x492 [ 929.107808] ? compat_do_ipt_set_ctl+0x160/0x160 [ 929.112840] ? mutex_unlock+0xd/0x10 [ 929.117133] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 929.122570] nf_setsockopt+0x77/0xd0 [ 929.126803] ip_setsockopt+0xdf/0x100 [ 929.130943] tcp_setsockopt+0x8f/0xe0 [ 929.136088] sock_common_setsockopt+0x94/0xd0 [ 929.140686] __sys_setsockopt+0x17a/0x280 [ 929.145551] ? kernel_accept+0x310/0x310 [ 929.149666] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 929.154875] ? do_syscall_64+0x26/0x620 [ 929.159132] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 929.165091] ? do_syscall_64+0x26/0x620 [ 929.169098] __x64_sys_setsockopt+0xbe/0x150 [ 929.173544] do_syscall_64+0xfd/0x620 [ 929.177855] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 929.183072] RIP: 0033:0x447209 [ 929.186744] Code: 6c 64 0a 00 74 72 79 69 6e 67 20 74 6f 20 64 65 6c 65 74 65 20 61 70 63 20 25 6c 64 0a 00 73 6f 6d 65 74 68 69 6e 67 00 61 70 <63> 2e 63 00 61 70 63 00 00 00 00 00 00 00 00 41 50 43 20 6d 6f 64 [ 929.206139] RSP: 002b:00007fa123e91d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 929.213991] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000447209 [ 929.222026] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 929.229994] RBP: 00000000006dbc20 R08: 00000000000003e0 R09: 0000000000000000 [ 929.237753] R10: 0000000020000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 929.245554] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172 [ 929.253002] INFO: task syz-executor200:8338 blocked for more than 140 seconds. [ 929.260974] Not tainted 4.19.101-syzkaller #0 [ 929.267395] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 929.276199] syz-executor200 D28872 8338 8300 0x00000004 [ 929.281863] Call Trace: [ 929.285211] __schedule+0x866/0x1dc0 [ 929.289309] ? __mutex_lock+0x721/0x1300 [ 929.293410] ? firmware_map_remove+0x1a6/0x1a6 [ 929.298633] ? kasan_check_read+0x11/0x20 [ 929.302821] schedule+0x92/0x1c0 [ 929.306842] schedule_preempt_disabled+0x13/0x20 [ 929.311649] __mutex_lock+0x726/0x1300 [ 929.316191] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 929.323309] ? mutex_trylock+0x1e0/0x1e0 [ 929.327893] ? xt_find_match+0xa6/0x280 [ 929.331989] ? xt_find_match+0x1e8/0x280 [ 929.336636] ? find_held_lock+0x35/0x130 [ 929.340868] mutex_lock_nested+0x16/0x20 [ 929.345416] ? mutex_lock_nested+0x16/0x20 [ 929.349890] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 929.356187] ? lock_downgrade+0x880/0x880 [ 929.360390] hashlimit_mt_check+0xa4/0xd0 [ 929.365063] ? hashlimit_mt_check_common.isra.0+0x1500/0x1500 [ 929.371596] xt_check_match+0x280/0x690 [ 929.376227] ? xt_check_target+0x6a0/0x6a0 [ 929.380500] ? mutex_unlock+0xd/0x10 [ 929.384388] ? xt_find_match+0x73/0x280 [ 929.388825] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 929.395701] find_check_entry.isra.0+0x32f/0x920 [ 929.400504] ? ipt_do_table+0x1b30/0x1b30 [ 929.405185] ? lockdep_hardirqs_on+0x415/0x5d0 [ 929.409805] ? trace_hardirqs_on+0x67/0x220 [ 929.414186] ? kvfree+0x61/0x70 [ 929.417983] translate_table+0xcb4/0x17d0 [ 929.422189] ? alloc_counters.isra.0+0x680/0x680 [ 929.427462] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 929.433029] ? _copy_from_user+0xdd/0x150 [ 929.437680] do_ipt_set_ctl+0x2ef/0x492 [ 929.441722] ? compat_do_ipt_set_ctl+0x160/0x160 [ 929.446994] ? mutex_unlock+0xd/0x10 [ 929.450767] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 929.456770] nf_setsockopt+0x77/0xd0 [ 929.460515] ip_setsockopt+0xdf/0x100 [ 929.464340] tcp_setsockopt+0x8f/0xe0 [ 929.468814] sock_common_setsockopt+0x94/0xd0 [ 929.474135] __sys_setsockopt+0x17a/0x280 [ 929.478883] ? kernel_accept+0x310/0x310 [ 929.482982] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 929.488231] ? do_syscall_64+0x26/0x620 [ 929.492247] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 929.498153] ? do_syscall_64+0x26/0x620 [ 929.502293] __x64_sys_setsockopt+0xbe/0x150 [ 929.507334] do_syscall_64+0xfd/0x620 [ 929.511347] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 929.516964] RIP: 0033:0x447209 [ 929.520172] Code: 6c 64 0a 00 74 72 79 69 6e 67 20 74 6f 20 64 65 6c 65 74 65 20 61 70 63 20 25 6c 64 0a 00 73 6f 6d 65 74 68 69 6e 67 00 61 70 <63> 2e 63 00 61 70 63 00 00 00 00 00 00 00 00 41 50 43 20 6d 6f 64 [ 929.540497] RSP: 002b:00007fa123e91d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 929.549407] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000447209 [ 929.557379] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 929.565361] RBP: 00000000006dbc20 R08: 00000000000003e0 R09: 0000000000000000 [ 929.572763] R10: 0000000020000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 929.580577] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172 [ 929.588408] INFO: task syz-executor200:8343 blocked for more than 140 seconds. [ 929.596164] Not tainted 4.19.101-syzkaller #0 [ 929.601200] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 929.609578] syz-executor200 D28040 8343 8302 0x00000004 [ 929.615850] Call Trace: [ 929.618587] __schedule+0x866/0x1dc0 [ 929.622471] ? __mutex_lock+0x721/0x1300 [ 929.627132] ? firmware_map_remove+0x1a6/0x1a6 [ 929.631976] ? kasan_check_read+0x11/0x20 [ 929.636566] schedule+0x92/0x1c0 [ 929.639965] schedule_preempt_disabled+0x13/0x20 [ 929.645190] __mutex_lock+0x726/0x1300 [ 929.649286] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 929.655562] ? mutex_trylock+0x1e0/0x1e0 [ 929.659663] ? xt_find_match+0xa6/0x280 [ 929.663679] ? xt_find_match+0x1e8/0x280 [ 929.669288] ? find_held_lock+0x35/0x130 [ 929.673406] mutex_lock_nested+0x16/0x20 [ 929.677944] ? mutex_lock_nested+0x16/0x20 [ 929.682273] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 929.688559] ? lock_downgrade+0x880/0x880 [ 929.692770] hashlimit_mt_check+0xa4/0xd0 [ 929.697469] ? hashlimit_mt_check_common.isra.0+0x1500/0x1500 [ 929.703448] xt_check_match+0x280/0x690 [ 929.707907] ? xt_check_target+0x6a0/0x6a0 [ 929.712367] ? mutex_unlock+0xd/0x10 [ 929.717135] ? xt_find_match+0x73/0x280 [ 929.721242] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 929.727262] find_check_entry.isra.0+0x32f/0x920 [ 929.732149] ? ipt_do_table+0x1b30/0x1b30 [ 929.736759] ? lockdep_hardirqs_on+0x415/0x5d0 [ 929.741395] ? trace_hardirqs_on+0x67/0x220 [ 929.746190] ? kvfree+0x61/0x70 [ 929.749520] translate_table+0xcb4/0x17d0 [ 929.753723] ? alloc_counters.isra.0+0x680/0x680 [ 929.759071] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 929.765097] ? _copy_from_user+0xdd/0x150 [ 929.769452] do_ipt_set_ctl+0x2ef/0x492 [ 929.773460] ? compat_do_ipt_set_ctl+0x160/0x160 [ 929.779189] ? mutex_unlock+0xd/0x10 [ 929.782938] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 929.788663] nf_setsockopt+0x77/0xd0 [ 929.792443] ip_setsockopt+0xdf/0x100 [ 929.797730] tcp_setsockopt+0x8f/0xe0 [ 929.801564] sock_common_setsockopt+0x94/0xd0 [ 929.806512] __sys_setsockopt+0x17a/0x280 [ 929.810860] ? kernel_accept+0x310/0x310 [ 929.815405] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 929.820457] ? do_syscall_64+0x26/0x620 [ 929.824998] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 929.830412] ? do_syscall_64+0x26/0x620 [ 929.835255] __x64_sys_setsockopt+0xbe/0x150 [ 929.839708] do_syscall_64+0xfd/0x620 [ 929.843544] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 929.849164] RIP: 0033:0x447209 [ 929.852374] Code: 6c 64 0a 00 74 72 79 69 6e 67 20 74 6f 20 64 65 6c 65 74 65 20 61 70 63 20 25 6c 64 0a 00 73 6f 6d 65 74 68 69 6e 67 00 61 70 <63> 2e 63 00 61 70 63 00 00 00 00 00 00 00 00 41 50 43 20 6d 6f 64 [ 929.871973] RSP: 002b:00007fa123e91d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 929.880339] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000447209 [ 929.888062] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 929.895906] RBP: 00000000006dbc20 R08: 00000000000003e0 R09: 0000000000000000 [ 929.903227] R10: 0000000020000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 929.911071] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172 [ 929.918904] INFO: task syz-executor200:8340 blocked for more than 140 seconds. [ 929.927553] Not tainted 4.19.101-syzkaller #0 [ 929.932587] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 929.941003] syz-executor200 D28872 8340 8303 0x00000004 [ 929.947216] Call Trace: [ 929.949846] __schedule+0x866/0x1dc0 [ 929.953690] ? __mutex_lock+0x721/0x1300 [ 929.958297] ? firmware_map_remove+0x1a6/0x1a6 [ 929.963072] ? kasan_check_read+0x11/0x20 [ 929.967960] schedule+0x92/0x1c0 [ 929.971560] schedule_preempt_disabled+0x13/0x20 [ 929.976751] __mutex_lock+0x726/0x1300 [ 929.980673] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 929.987328] ? mutex_trylock+0x1e0/0x1e0 [ 929.991419] ? xt_find_match+0xa6/0x280 [ 929.995985] ? xt_find_match+0x1e8/0x280 [ 930.000078] ? find_held_lock+0x35/0x130 [ 930.004156] mutex_lock_nested+0x16/0x20 [ 930.009031] ? mutex_lock_nested+0x16/0x20 [ 930.013312] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.019352] ? lock_downgrade+0x880/0x880 [ 930.023523] hashlimit_mt_check+0xa4/0xd0 [ 930.028402] ? hashlimit_mt_check_common.isra.0+0x1500/0x1500 [ 930.034853] xt_check_match+0x280/0x690 [ 930.038859] ? xt_check_target+0x6a0/0x6a0 [ 930.043117] ? mutex_unlock+0xd/0x10 [ 930.047250] ? xt_find_match+0x73/0x280 [ 930.051279] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.058266] find_check_entry.isra.0+0x32f/0x920 [ 930.063093] ? ipt_do_table+0x1b30/0x1b30 [ 930.067732] ? lockdep_hardirqs_on+0x415/0x5d0 [ 930.072365] ? trace_hardirqs_on+0x67/0x220 [ 930.077265] ? kvfree+0x61/0x70 [ 930.080597] translate_table+0xcb4/0x17d0 [ 930.085324] ? alloc_counters.isra.0+0x680/0x680 [ 930.090371] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.096366] ? _copy_from_user+0xdd/0x150 [ 930.100551] do_ipt_set_ctl+0x2ef/0x492 [ 930.105230] ? compat_do_ipt_set_ctl+0x160/0x160 [ 930.110039] ? mutex_unlock+0xd/0x10 [ 930.113797] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 930.119687] nf_setsockopt+0x77/0xd0 [ 930.123440] ip_setsockopt+0xdf/0x100 [ 930.127724] tcp_setsockopt+0x8f/0xe0 [ 930.131582] sock_common_setsockopt+0x94/0xd0 [ 930.136558] __sys_setsockopt+0x17a/0x280 [ 930.140763] ? kernel_accept+0x310/0x310 [ 930.145286] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 930.150076] ? do_syscall_64+0x26/0x620 [ 930.154217] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.160087] ? do_syscall_64+0x26/0x620 [ 930.164114] __x64_sys_setsockopt+0xbe/0x150 [ 930.169003] do_syscall_64+0xfd/0x620 [ 930.172994] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.178683] RIP: 0033:0x447209 [ 930.181901] Code: 6c 64 0a 00 74 72 79 69 6e 67 20 74 6f 20 64 65 6c 65 74 65 20 61 70 63 20 25 6c 64 0a 00 73 6f 6d 65 74 68 69 6e 67 00 61 70 <63> 2e 63 00 61 70 63 00 00 00 00 00 00 00 00 41 50 43 20 6d 6f 64 [ 930.202399] RSP: 002b:00007fa123e91d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 930.210684] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000447209 [ 930.218414] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 930.226108] RBP: 00000000006dbc20 R08: 00000000000003e0 R09: 0000000000000000 [ 930.233559] R10: 0000000020000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 930.241650] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172 [ 930.249366] INFO: task syz-executor200:8341 blocked for more than 140 seconds. [ 930.257232] Not tainted 4.19.101-syzkaller #0 [ 930.262274] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 930.270639] syz-executor200 D28872 8341 8299 0x00000004 [ 930.276677] Call Trace: [ 930.279332] __schedule+0x866/0x1dc0 [ 930.283068] ? __mutex_lock+0x721/0x1300 [ 930.287749] ? firmware_map_remove+0x1a6/0x1a6 [ 930.292459] ? kasan_check_read+0x11/0x20 [ 930.297205] schedule+0x92/0x1c0 [ 930.300653] schedule_preempt_disabled+0x13/0x20 [ 930.305827] __mutex_lock+0x726/0x1300 [ 930.309849] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.316122] ? mutex_trylock+0x1e0/0x1e0 [ 930.320224] ? xt_find_match+0xa6/0x280 [ 930.324240] ? xt_find_match+0x1e8/0x280 [ 930.329785] ? find_held_lock+0x35/0x130 [ 930.333890] mutex_lock_nested+0x16/0x20 [ 930.338425] ? mutex_lock_nested+0x16/0x20 [ 930.342707] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.348962] ? lock_downgrade+0x880/0x880 [ 930.353149] hashlimit_mt_check+0xa4/0xd0 [ 930.357966] ? hashlimit_mt_check_common.isra.0+0x1500/0x1500 [ 930.363896] xt_check_match+0x280/0x690 [ 930.368351] ? xt_check_target+0x6a0/0x6a0 [ 930.372708] ? mutex_unlock+0xd/0x10 [ 930.377006] ? xt_find_match+0x73/0x280 [ 930.381029] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.387069] find_check_entry.isra.0+0x32f/0x920 [ 930.391878] ? ipt_do_table+0x1b30/0x1b30 [ 930.396545] ? lockdep_hardirqs_on+0x415/0x5d0 [ 930.401166] ? trace_hardirqs_on+0x67/0x220 [ 930.406222] ? kvfree+0x61/0x70 [ 930.409695] translate_table+0xcb4/0x17d0 [ 930.413892] ? alloc_counters.isra.0+0x680/0x680 [ 930.419145] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.425426] ? _copy_from_user+0xdd/0x150 [ 930.429634] do_ipt_set_ctl+0x2ef/0x492 [ 930.433654] ? compat_do_ipt_set_ctl+0x160/0x160 [ 930.438919] ? mutex_unlock+0xd/0x10 [ 930.442790] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 930.448816] nf_setsockopt+0x77/0xd0 [ 930.452678] ip_setsockopt+0xdf/0x100 [ 930.457751] tcp_setsockopt+0x8f/0xe0 [ 930.461699] sock_common_setsockopt+0x94/0xd0 [ 930.466745] __sys_setsockopt+0x17a/0x280 [ 930.470929] ? kernel_accept+0x310/0x310 [ 930.475461] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 930.480299] ? do_syscall_64+0x26/0x620 [ 930.484302] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.490210] ? do_syscall_64+0x26/0x620 [ 930.494239] __x64_sys_setsockopt+0xbe/0x150 [ 930.499024] do_syscall_64+0xfd/0x620 [ 930.502870] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.508516] RIP: 0033:0x447209 [ 930.511984] Code: 6c 64 0a 00 74 72 79 69 6e 67 20 74 6f 20 64 65 6c 65 74 65 20 61 70 63 20 25 6c 64 0a 00 73 6f 6d 65 74 68 69 6e 67 00 61 70 <63> 2e 63 00 61 70 63 00 00 00 00 00 00 00 00 41 50 43 20 6d 6f 64 [ 930.531591] RSP: 002b:00007fa123e91d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 930.539816] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000447209 [ 930.547543] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 930.555565] RBP: 00000000006dbc20 R08: 00000000000003e0 R09: 0000000000000000 [ 930.562884] R10: 0000000020000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 930.570624] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172 [ 930.578363] INFO: task syz-executor200:8342 blocked for more than 140 seconds. [ 930.587326] Not tainted 4.19.101-syzkaller #0 [ 930.592360] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 930.600830] syz-executor200 D28296 8342 8301 0x00000004 [ 930.606895] Call Trace: [ 930.609530] __schedule+0x866/0x1dc0 [ 930.613382] ? __mutex_lock+0x721/0x1300 [ 930.618113] ? firmware_map_remove+0x1a6/0x1a6 [ 930.622874] ? kasan_check_read+0x11/0x20 [ 930.627530] schedule+0x92/0x1c0 [ 930.630930] schedule_preempt_disabled+0x13/0x20 [ 930.636140] __mutex_lock+0x726/0x1300 [ 930.640417] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.646685] ? mutex_trylock+0x1e0/0x1e0 [ 930.650837] ? xt_find_match+0xa6/0x280 [ 930.655311] ? xt_find_match+0x1e8/0x280 [ 930.659517] ? find_held_lock+0x35/0x130 [ 930.663610] mutex_lock_nested+0x16/0x20 [ 930.668126] ? mutex_lock_nested+0x16/0x20 [ 930.672381] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 930.678631] ? lock_downgrade+0x880/0x880 [ 930.682929] hashlimit_mt_check+0xa4/0xd0 [ 930.687513] ? hashlimit_mt_check_common.isra.0+0x1500/0x1500 [ 930.693455] xt_check_match+0x280/0x690 [ 930.697920] ? xt_check_target+0x6a0/0x6a0 [ 930.702198] ? mutex_unlock+0xd/0x10 [ 930.706356] ? xt_find_match+0x73/0x280 [ 930.710537] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.717411] find_check_entry.isra.0+0x32f/0x920 [ 930.722199] ? ipt_do_table+0x1b30/0x1b30 [ 930.726850] ? lockdep_hardirqs_on+0x415/0x5d0 [ 930.731623] ? trace_hardirqs_on+0x67/0x220 [ 930.736341] ? kvfree+0x61/0x70 [ 930.739647] translate_table+0xcb4/0x17d0 [ 930.743993] ? alloc_counters.isra.0+0x680/0x680 [ 930.750103] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 930.756085] ? _copy_from_user+0xdd/0x150 [ 930.760273] do_ipt_set_ctl+0x2ef/0x492 [ 930.764272] ? compat_do_ipt_set_ctl+0x160/0x160 [ 930.769513] ? mutex_unlock+0xd/0x10 [ 930.773264] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 930.778979] nf_setsockopt+0x77/0xd0 [ 930.782729] ip_setsockopt+0xdf/0x100 [ 930.787250] tcp_setsockopt+0x8f/0xe0 [ 930.791208] sock_common_setsockopt+0x94/0xd0 [ 930.796156] __sys_setsockopt+0x17a/0x280 [ 930.800362] ? kernel_accept+0x310/0x310 [ 930.804855] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 930.809630] ? do_syscall_64+0x26/0x620 [ 930.813631] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.819540] ? do_syscall_64+0x26/0x620 [ 930.823588] __x64_sys_setsockopt+0xbe/0x150 [ 930.828627] do_syscall_64+0xfd/0x620 [ 930.832475] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 930.838279] RIP: 0033:0x447209 [ 930.841589] Code: 6c 64 0a 00 74 72 79 69 6e 67 20 74 6f 20 64 65 6c 65 74 65 20 61 70 63 20 25 6c 64 0a 00 73 6f 6d 65 74 68 69 6e 67 00 61 70 <63> 2e 63 00 61 70 63 00 00 00 00 00 00 00 00 41 50 43 20 6d 6f 64 [ 930.861963] RSP: 002b:00007fa123e91d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 930.870196] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000447209 [ 930.878018] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 930.885604] RBP: 00000000006dbc20 R08: 00000000000003e0 R09: 0000000000000000 [ 930.892898] R10: 0000000020000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 930.900656] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000776172 [ 930.908522] [ 930.908522] Showing all locks held in the system: [ 930.915240] 2 locks held by kworker/1:0/19: [ 930.919584] 1 lock held by khungtaskd/1080: [ 930.923915] #0: 0000000078cc925f (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e [ 930.933085] 1 lock held by khugepaged/1087: [ 930.937900] #0: 0000000085d06606 (pcpu_drain_mutex){+.+.}, at: drain_all_pages+0x4d/0x570 [ 930.947138] 1 lock held by rsyslogd/8150: [ 930.951304] #0: 00000000d8b2777b (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 930.959851] 2 locks held by getty/8272: [ 930.963848] #0: 000000000e78ed46 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 930.972586] #1: 0000000080e2d174 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 930.982073] 2 locks held by getty/8273: [ 930.987325] #0: 0000000013f71695 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 930.996161] #1: 0000000012522e69 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 931.005568] 2 locks held by getty/8274: [ 931.009564] #0: 00000000d759fdba (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 931.018373] #1: 000000003f0c5cde (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 931.028234] 2 locks held by getty/8275: [ 931.032242] #0: 00000000be084d3d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 931.041169] #1: 000000002aeaa42e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 931.050584] 2 locks held by getty/8276: [ 931.054919] #0: 000000007e4dfd34 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 931.063384] #1: 00000000ce8667f8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 931.072750] 2 locks held by getty/8277: [ 931.077152] #0: 00000000ccd4af0b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 931.086083] #1: 00000000061162c8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 931.095321] 2 locks held by getty/8278: [ 931.099320] #0: 00000000efc307b4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 931.108091] #1: 000000003497abdf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70 [ 931.118484] 1 lock held by syz-executor200/8325: [ 931.123383] #0: 00000000fec76d3f (hashlimit_mutex){+.+.}, at: htable_put+0x21/0x220 [ 931.131739] 1 lock held by syz-executor200/8338: [ 931.137141] #0: 00000000fec76d3f (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.147859] 1 lock held by syz-executor200/8343: [ 931.152644] #0: 00000000fec76d3f (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.163137] 1 lock held by syz-executor200/8340: [ 931.168474] #0: 00000000fec76d3f (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.179159] 1 lock held by syz-executor200/8341: [ 931.184089] #0: 00000000fec76d3f (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.194600] 1 lock held by syz-executor200/8342: [ 931.199480] #0: 00000000fec76d3f (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 931.209918] [ 931.211572] ============================================= [ 931.211572] [ 931.219241] NMI backtrace for cpu 0 [ 931.222902] CPU: 0 PID: 1080 Comm: khungtaskd Not tainted 4.19.101-syzkaller #0 [ 931.230382] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 931.239836] Call Trace: [ 931.242731] dump_stack+0x197/0x210 [ 931.246397] nmi_cpu_backtrace.cold+0x63/0xa4 [ 931.250986] ? lapic_can_unplug_cpu.cold+0x47/0x47 [ 931.256209] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 931.261508] arch_trigger_cpumask_backtrace+0x14/0x20 [ 931.266705] watchdog+0x9df/0xee0 [ 931.270308] kthread+0x354/0x420 [ 931.273714] ? reset_hung_task_detector+0x30/0x30 [ 931.278578] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 931.284143] ret_from_fork+0x24/0x30 [ 931.288043] Sending NMI from CPU 0 to CPUs 1: [ 931.293051] NMI backtrace for cpu 1 [ 931.293062] CPU: 1 PID: 19 Comm: kworker/1:0 Not tainted 4.19.101-syzkaller #0 [ 931.293070] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 931.293074] Workqueue: events_power_efficient htable_gc [ 931.293081] RIP: 0010:lockdep_hardirqs_on+0x1a/0x5d0 [ 931.293095] Code: 8b 7d c0 e9 6b fe ff ff 0f 1f 84 00 00 00 00 00 48 c7 c0 c0 57 3c 89 55 48 ba 00 00 00 00 00 fc ff df 48 89 c1 48 89 e5 41 54 <83> e0 07 48 c1 e9 03 53 83 c0 03 49 89 fc 0f b6 14 11 38 d0 7c 08 [ 931.293099] RSP: 0018:ffff8880aa3efc10 EFLAGS: 00000093 [ 931.293108] RAX: ffffffff893c57c0 RBX: 0000000000000000 RCX: ffffffff893c57c0 [ 931.293114] RDX: dffffc0000000000 RSI: ffffffff8170472e RDI: ffffffff8140221a [ 931.293119] RBP: ffff8880aa3efc18 R08: ffff8880aa3da500 R09: fffff52000bd3c0a [ 931.293126] R10: fffff52000bd3c09 R11: ffffc90005e9e04b R12: ffffffff8609ac19 [ 931.293132] R13: ffffffff8754f321 R14: ffffffff8140221a R15: 000000000e7a5ec7 [ 931.293138] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 931.293143] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 931.293149] CR2: 00007fa123e91e78 CR3: 0000000082fa8000 CR4: 00000000001406e0 [ 931.293154] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 931.293160] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 931.293163] Call Trace: [ 931.293167] ? htable_selective_cleanup+0x219/0x330 [ 931.293171] trace_hardirqs_on+0x67/0x220 [ 931.293176] ? htable_selective_cleanup+0x219/0x330 [ 931.293180] __local_bh_enable_ip+0x15a/0x270 [ 931.293183] _raw_spin_unlock_bh+0x31/0x40 [ 931.293188] htable_selective_cleanup+0x219/0x330 [ 931.293191] ? select_all+0x10/0x10 [ 931.293194] htable_gc+0x26/0xc0 [ 931.293199] ? rcu_read_lock_sched_held+0x110/0x130 [ 931.293202] process_one_work+0x989/0x1750 [ 931.293207] ? pwq_dec_nr_in_flight+0x320/0x320 [ 931.293211] ? lock_acquire+0x16f/0x3f0 [ 931.293215] ? kasan_check_write+0x14/0x20 [ 931.293218] ? do_raw_spin_lock+0xd7/0x250 [ 931.293222] worker_thread+0x98/0xe40 [ 931.293225] kthread+0x354/0x420 [ 931.293229] ? process_one_work+0x1750/0x1750 [ 931.293234] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 931.293237] ret_from_fork+0x24/0x30 [ 931.295079] Kernel panic - not syncing: hung_task: blocked tasks [ 931.513240] CPU: 0 PID: 1080 Comm: khungtaskd Not tainted 4.19.101-syzkaller #0 [ 931.520785] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 931.530377] Call Trace: [ 931.533082] dump_stack+0x197/0x210 [ 931.536726] panic+0x26a/0x50e [ 931.539948] ? __warn_printk+0xf3/0xf3 [ 931.543856] ? lapic_can_unplug_cpu.cold+0x47/0x47 [ 931.548983] ? ___preempt_schedule+0x16/0x18 [ 931.553413] ? nmi_trigger_cpumask_backtrace+0x165/0x1f8 [ 931.558888] ? nmi_trigger_cpumask_backtrace+0x1c1/0x1f8 [ 931.564347] ? nmi_trigger_cpumask_backtrace+0x1cb/0x1f8 [ 931.569977] ? nmi_trigger_cpumask_backtrace+0x165/0x1f8 [ 931.575460] watchdog+0x9f0/0xee0 [ 931.578953] kthread+0x354/0x420 [ 931.582341] ? reset_hung_task_detector+0x30/0x30 [ 931.587206] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 931.592757] ret_from_fork+0x24/0x30 [ 931.599215] Kernel Offset: disabled [ 931.602887] Rebooting in 86400 seconds..