[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 80.370643][ T27] audit: type=1800 audit(1580170191.092:25): pid=9371 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 80.391273][ T27] audit: type=1800 audit(1580170191.122:26): pid=9371 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 80.412165][ T27] audit: type=1800 audit(1580170191.122:27): pid=9371 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.187' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 255.000575][ T9532] xt_CT: You must specify a L4 protocol and not use inversions on it [ 255.000642][ T9531] xt_CT: You must specify a L4 protocol and not use inversions on it [ 255.002854][ T9535] xt_CT: You must specify a L4 protocol and not use inversions on it [ 255.009634][ T9533] xt_CT: You must specify a L4 protocol and not use inversions on it [ 255.019305][ T9536] xt_CT: You must specify a L4 protocol and not use inversions on it [ 255.025637][ T9534] 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 executing program executing program executing program executing program executing program executing program [ 255.042490][ T9537] xt_CT: You must specify a L4 protocol and not use inversions on it [ 255.052743][ T9526] xt_CT: You must specify a L4 protocol and not use inversions on it [ 255.059482][ T9542] xt_CT: You must specify a L4 protocol and not use inversions on it executing program executing program [ 255.066519][ T9538] xt_CT: You must specify a L4 protocol and not use inversions on it [ 403.300749][ T1108] INFO: task syz-executor297:9538 blocked for more than 143 seconds. [ 403.317111][ T1108] Not tainted 5.5.0-syzkaller #0 [ 403.329414][ T1108] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 403.338564][ T1108] syz-executor297 D28248 9538 9528 0x00004004 [ 403.345544][ T1108] Call Trace: [ 403.348911][ T1108] __schedule+0x934/0x1f90 [ 403.353690][ T1108] ? __sched_text_start+0x8/0x8 [ 403.358598][ T1108] ? __lock_acquire+0x29c9/0x4a00 [ 403.364089][ T1108] schedule+0xdc/0x2b0 [ 403.368666][ T1108] schedule_timeout+0x717/0xc50 [ 403.373927][ T1108] ? __kasan_check_read+0x11/0x20 [ 403.378979][ T1108] ? usleep_range+0x170/0x170 [ 403.384971][ T1108] ? mark_held_locks+0xa4/0xf0 [ 403.389751][ T1108] ? _raw_spin_unlock_irq+0x23/0x80 [ 403.395280][ T1108] ? wait_for_completion+0x294/0x440 [ 403.400866][ T1108] ? _raw_spin_unlock_irq+0x23/0x80 [ 403.406088][ T1108] ? lockdep_hardirqs_on+0x421/0x5e0 [ 403.411751][ T1108] ? trace_hardirqs_on+0x67/0x240 [ 403.416796][ T1108] wait_for_completion+0x29c/0x440 [ 403.422341][ T1108] ? wait_for_completion_interruptible+0x470/0x470 [ 403.428923][ T1108] ? wake_up_q+0x140/0x140 [ 403.433659][ T1108] ? lockdep_hardirqs_on+0x421/0x5e0 [ 403.438959][ T1108] ? __kasan_check_read+0x11/0x20 [ 403.444318][ T1108] __flush_work+0x4fe/0xa50 [ 403.448844][ T1108] ? queue_delayed_work_on+0x210/0x210 [ 403.454618][ T1108] ? init_pwq+0x360/0x360 [ 403.458971][ T1108] ? __cancel_work_timer+0xc4/0x540 [ 403.464619][ T1108] ? __cancel_work_timer+0x1e0/0x540 [ 403.469915][ T1108] ? cancel_delayed_work_sync+0x1b/0x20 [ 403.475763][ T1108] ? __cancel_work_timer+0x1e0/0x540 [ 403.481319][ T1108] ? lockdep_hardirqs_on+0x421/0x5e0 [ 403.486618][ T1108] ? trace_hardirqs_on+0x67/0x240 [ 403.491969][ T1108] __cancel_work_timer+0x3d9/0x540 [ 403.497202][ T1108] ? mutex_trylock+0x2d0/0x2d0 [ 403.502281][ T1108] ? mod_delayed_work_on+0x200/0x200 [ 403.507578][ T1108] ? __kasan_check_write+0x14/0x20 [ 403.514205][ T1108] ? xt_ct_tg_check_v1+0x7c/0xa0 [ 403.519171][ T1108] ? xt_ct_tg_check_v2+0xa0/0xa0 [ 403.524514][ T1108] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 403.531080][ T1108] cancel_delayed_work_sync+0x1b/0x20 [ 403.536506][ T1108] htable_put+0x15f/0x220 [ 403.541158][ T1108] ? hashlimit_mt_destroy_v2+0x70/0x70 [ 403.546629][ T1108] hashlimit_mt_destroy_v1+0x50/0x70 [ 403.552281][ T1108] cleanup_match+0xde/0x170 [ 403.556819][ T1108] ? icmp_checkentry+0xa0/0xa0 [ 403.561897][ T1108] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 403.568153][ T1108] find_check_entry.isra.0+0x454/0x920 [ 403.573956][ T1108] ? ipt_do_table+0x1b80/0x1b80 [ 403.578828][ T1108] ? lockdep_hardirqs_on+0x421/0x5e0 [ 403.584575][ T1108] ? kvfree+0x61/0x70 [ 403.588582][ T1108] translate_table+0xcb4/0x17d0 [ 403.593781][ T1108] ? compat_do_ipt_get_ctl+0x910/0x910 [ 403.599281][ T1108] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 403.606097][ T1108] ? _copy_from_user+0x12c/0x1a0 [ 403.611347][ T1108] do_ipt_set_ctl+0x2fe/0x4c2 [ 403.616038][ T1108] ? compat_do_ipt_set_ctl+0x170/0x170 [ 403.621802][ T1108] ? mutex_unlock+0xd/0x10 [ 403.626294][ T1108] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 403.632617][ T1108] nf_setsockopt+0x77/0xd0 [ 403.637062][ T1108] ip_setsockopt+0xdf/0x100 [ 403.642907][ T1108] tcp_setsockopt+0x8f/0xe0 [ 403.647439][ T1108] sock_common_setsockopt+0x94/0xd0 [ 403.653038][ T1108] __sys_setsockopt+0x261/0x4c0 [ 403.658190][ T1108] ? sock_create_kern+0x50/0x50 [ 403.663449][ T1108] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 403.669262][ T1108] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 403.676103][ T1108] ? handle_mm_fault+0x4ab/0xa50 [ 403.681524][ T1108] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 403.687121][ T1108] ? do_syscall_64+0x26/0x790 [ 403.692330][ T1108] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 403.698413][ T1108] ? do_syscall_64+0x26/0x790 [ 403.703451][ T1108] __x64_sys_setsockopt+0xbe/0x150 [ 403.708704][ T1108] do_syscall_64+0xfa/0x790 [ 403.713570][ T1108] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 403.719488][ T1108] RIP: 0033:0x441639 [ 403.723850][ T1108] Code: 00 09 33 32 62 69 74 20 41 74 6f 6d 69 63 20 6f 70 65 72 61 74 69 6f 6e 73 20 73 75 70 70 6f 72 74 65 64 3a 09 59 65 73 00 09 <36> 34 62 69 74 20 41 74 6f 6d 69 63 20 6f 70 65 72 61 74 69 6f 6e [ 403.744031][ T1108] RSP: 002b:00007ffd631e5128 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 403.752816][ T1108] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441639 [ 403.761144][ T1108] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 403.769347][ T1108] RBP: 000000000003c574 R08: 00000000000002e8 R09: 0000000000402440 [ 403.778773][ T1108] R10: 0000000020000640 R11: 0000000000000246 R12: 00000000004023b0 [ 403.787251][ T1108] R13: 0000000000402440 R14: 0000000000000000 R15: 0000000000000000 [ 403.795818][ T1108] INFO: task syz-executor297:9553 blocked for more than 143 seconds. [ 403.804331][ T1108] Not tainted 5.5.0-syzkaller #0 [ 403.810025][ T1108] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 403.819028][ T1108] syz-executor297 D28312 9553 9530 0x00000004 [ 403.825878][ T1108] Call Trace: [ 403.829195][ T1108] __schedule+0x934/0x1f90 [ 403.834400][ T1108] ? __sched_text_start+0x8/0x8 [ 403.839263][ T1108] ? lock_downgrade+0x920/0x920 [ 403.844880][ T1108] ? rwlock_bug.part.0+0x90/0x90 [ 403.849851][ T1108] schedule+0xdc/0x2b0 [ 403.854264][ T1108] schedule_preempt_disabled+0x13/0x20 [ 403.859742][ T1108] __mutex_lock+0x7ab/0x13c0 [ 403.864802][ T1108] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 403.872071][ T1108] ? mutex_trylock+0x2d0/0x2d0 [ 403.876860][ T1108] ? pcpu_alloc+0x100c/0x1380 [ 403.882213][ T1108] ? mark_held_locks+0xf0/0xf0 [ 403.886996][ T1108] ? __mutex_lock+0x458/0x13c0 [ 403.892361][ T1108] mutex_lock_nested+0x16/0x20 [ 403.897138][ T1108] ? mutex_lock_nested+0x16/0x20 [ 403.903809][ T1108] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 403.910315][ T1108] hashlimit_mt_check_v1+0x325/0x3ab [ 403.915936][ T1108] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 403.921676][ T1108] ? lock_downgrade+0x920/0x920 [ 403.926539][ T1108] ? xt_find_match+0xa6/0x280 [ 403.931554][ T1108] ? mutex_trylock+0x2d0/0x2d0 [ 403.936439][ T1108] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 403.942225][ T1108] xt_check_match+0x280/0x690 [ 403.946919][ T1108] ? xt_check_target+0x690/0x690 [ 403.952186][ T1108] ? pcpu_alloc_area+0x820/0x820 [ 403.957143][ T1108] ? mutex_unlock+0xd/0x10 [ 403.961863][ T1108] ? xt_find_match+0x73/0x280 [ 403.966564][ T1108] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 403.973142][ T1108] find_check_entry.isra.0+0x32f/0x920 [ 403.978620][ T1108] ? ipt_do_table+0x1b80/0x1b80 [ 403.983790][ T1108] ? lockdep_hardirqs_on+0x421/0x5e0 [ 403.989089][ T1108] ? trace_hardirqs_on+0x67/0x240 [ 403.994433][ T1108] ? kvfree+0x61/0x70 [ 403.998435][ T1108] translate_table+0xcb4/0x17d0 [ 404.003622][ T1108] ? compat_do_ipt_get_ctl+0x910/0x910 [ 404.009411][ T1108] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 404.016063][ T1108] ? _copy_from_user+0x12c/0x1a0 [ 404.021528][ T1108] do_ipt_set_ctl+0x2fe/0x4c2 [ 404.026468][ T1108] ? compat_do_ipt_set_ctl+0x170/0x170 [ 404.033284][ T1108] ? mutex_unlock+0xd/0x10 [ 404.037720][ T1108] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 404.044030][ T1108] nf_setsockopt+0x77/0xd0 [ 404.048467][ T1108] ip_setsockopt+0xdf/0x100 [ 404.053317][ T1108] tcp_setsockopt+0x8f/0xe0 [ 404.057840][ T1108] sock_common_setsockopt+0x94/0xd0 [ 404.063490][ T1108] __sys_setsockopt+0x261/0x4c0 [ 404.068360][ T1108] ? sock_create_kern+0x50/0x50 [ 404.073522][ T1108] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 404.079084][ T1108] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 404.085635][ T1108] ? handle_mm_fault+0x4ab/0xa50 [ 404.091152][ T1108] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 404.096630][ T1108] ? do_syscall_64+0x26/0x790 [ 404.101754][ T1108] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 404.107835][ T1108] ? do_syscall_64+0x26/0x790 [ 404.112919][ T1108] __x64_sys_setsockopt+0xbe/0x150 [ 404.118050][ T1108] do_syscall_64+0xfa/0x790 [ 404.122866][ T1108] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 404.128770][ T1108] RIP: 0033:0x441639 [ 404.133079][ T1108] Code: 00 09 33 32 62 69 74 20 41 74 6f 6d 69 63 20 6f 70 65 72 61 74 69 6f 6e 73 20 73 75 70 70 6f 72 74 65 64 3a 09 59 65 73 00 09 <36> 34 62 69 74 20 41 74 6f 6d 69 63 20 6f 70 65 72 61 74 69 6f 6e [ 404.153048][ T1108] RSP: 002b:00007ffd631e5128 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 404.162693][ T1108] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441639 [ 404.170975][ T1108] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 404.178955][ T1108] RBP: 000000000003e45d R08: 00000000000002e8 R09: 0000000000402440 [ 404.187296][ T1108] R10: 0000000020000640 R11: 0000000000000246 R12: 00000000004023b0 [ 404.195768][ T1108] R13: 0000000000402440 R14: 0000000000000000 R15: 0000000000000000 [ 404.204353][ T1108] INFO: task syz-executor297:9554 blocked for more than 144 seconds. [ 404.212690][ T1108] Not tainted 5.5.0-syzkaller #0 [ 404.218153][ T1108] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 404.227319][ T1108] syz-executor297 D28312 9554 9529 0x00000004 [ 404.233979][ T1108] Call Trace: [ 404.237292][ T1108] __schedule+0x934/0x1f90 [ 404.242039][ T1108] ? __sched_text_start+0x8/0x8 [ 404.246902][ T1108] ? lock_downgrade+0x920/0x920 [ 404.252082][ T1108] ? rwlock_bug.part.0+0x90/0x90 [ 404.257045][ T1108] schedule+0xdc/0x2b0 [ 404.261411][ T1108] schedule_preempt_disabled+0x13/0x20 [ 404.267012][ T1108] __mutex_lock+0x7ab/0x13c0 [ 404.272227][ T1108] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 404.278762][ T1108] ? mutex_trylock+0x2d0/0x2d0 [ 404.284064][ T1108] ? pcpu_alloc+0x100c/0x1380 [ 404.288770][ T1108] ? mark_held_locks+0xf0/0xf0 [ 404.294818][ T1108] ? __mutex_lock+0x458/0x13c0 [ 404.299609][ T1108] mutex_lock_nested+0x16/0x20 [ 404.305000][ T1108] ? mutex_lock_nested+0x16/0x20 [ 404.309956][ T1108] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 404.316634][ T1108] hashlimit_mt_check_v1+0x325/0x3ab [ 404.322204][ T1108] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 404.327675][ T1108] ? lock_downgrade+0x920/0x920 [ 404.332845][ T1108] ? xt_find_match+0xa6/0x280 [ 404.337542][ T1108] ? mutex_trylock+0x2d0/0x2d0 [ 404.342612][ T1108] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 404.348084][ T1108] xt_check_match+0x280/0x690 [ 404.353166][ T1108] ? xt_check_target+0x690/0x690 [ 404.358120][ T1108] ? pcpu_alloc_area+0x820/0x820 [ 404.363368][ T1108] ? mutex_unlock+0xd/0x10 [ 404.367794][ T1108] ? xt_find_match+0x73/0x280 [ 404.372859][ T1108] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 404.379122][ T1108] find_check_entry.isra.0+0x32f/0x920 [ 404.384901][ T1108] ? ipt_do_table+0x1b80/0x1b80 [ 404.389774][ T1108] ? lockdep_hardirqs_on+0x421/0x5e0 [ 404.395420][ T1108] ? trace_hardirqs_on+0x67/0x240 [ 404.400462][ T1108] ? kvfree+0x61/0x70 [ 404.404909][ T1108] translate_table+0xcb4/0x17d0 [ 404.409791][ T1108] ? compat_do_ipt_get_ctl+0x910/0x910 [ 404.415584][ T1108] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 404.423047][ T1108] ? _copy_from_user+0x12c/0x1a0 [ 404.428003][ T1108] do_ipt_set_ctl+0x2fe/0x4c2 [ 404.433016][ T1108] ? compat_do_ipt_set_ctl+0x170/0x170 [ 404.438752][ T1108] ? mutex_unlock+0xd/0x10 [ 404.443632][ T1108] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 404.449740][ T1108] nf_setsockopt+0x77/0xd0 [ 404.454534][ T1108] ip_setsockopt+0xdf/0x100 [ 404.459083][ T1108] tcp_setsockopt+0x8f/0xe0 [ 404.463915][ T1108] sock_common_setsockopt+0x94/0xd0 [ 404.469142][ T1108] __sys_setsockopt+0x261/0x4c0 [ 404.474370][ T1108] ? sock_create_kern+0x50/0x50 [ 404.479306][ T1108] ? down_read_non_owner+0x490/0x490 [ 404.484921][ T1108] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 404.491467][ T1108] ? handle_mm_fault+0x4ab/0xa50 [ 404.496425][ T1108] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 404.502195][ T1108] ? do_syscall_64+0x26/0x790 [ 404.507044][ T1108] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 404.513780][ T1108] ? do_syscall_64+0x26/0x790 [ 404.518474][ T1108] __x64_sys_setsockopt+0xbe/0x150 [ 404.523982][ T1108] do_syscall_64+0xfa/0x790 [ 404.528504][ T1108] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 404.534726][ T1108] RIP: 0033:0x441639 [ 404.538632][ T1108] Code: 00 09 33 32 62 69 74 20 41 74 6f 6d 69 63 20 6f 70 65 72 61 74 69 6f 6e 73 20 73 75 70 70 6f 72 74 65 64 3a 09 59 65 73 00 09 <36> 34 62 69 74 20 41 74 6f 6d 69 63 20 6f 70 65 72 61 74 69 6f 6e [ 404.559518][ T1108] RSP: 002b:00007ffd631e5128 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 404.568246][ T1108] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441639 [ 404.576519][ T1108] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 404.585138][ T1108] RBP: 000000000003e45e R08: 00000000000002e8 R09: 0000000000402440 [ 404.593404][ T1108] R10: 0000000020000640 R11: 0000000000000246 R12: 00000000004023b0 [ 404.601738][ T1108] R13: 0000000000402440 R14: 0000000000000000 R15: 0000000000000000 [ 404.609744][ T1108] INFO: task syz-executor297:9555 blocked for more than 144 seconds. [ 404.618107][ T1108] Not tainted 5.5.0-syzkaller #0 [ 404.623861][ T1108] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 404.632773][ T1108] syz-executor297 D28312 9555 9525 0x00000004 [ 404.639116][ T1108] Call Trace: [ 404.642709][ T1108] __schedule+0x934/0x1f90 [ 404.647148][ T1108] ? __sched_text_start+0x8/0x8 [ 404.652302][ T1108] ? lock_downgrade+0x920/0x920 [ 404.657166][ T1108] ? rwlock_bug.part.0+0x90/0x90 [ 404.662632][ T1108] schedule+0xdc/0x2b0 [ 404.666736][ T1108] schedule_preempt_disabled+0x13/0x20 [ 404.672527][ T1108] __mutex_lock+0x7ab/0x13c0 [ 404.677147][ T1108] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 404.684998][ T1108] ? mutex_trylock+0x2d0/0x2d0 [ 404.689785][ T1108] ? pcpu_alloc+0x100c/0x1380 [ 404.694788][ T1108] ? mark_held_locks+0xf0/0xf0 [ 404.699564][ T1108] ? __mutex_lock+0x458/0x13c0 [ 404.704886][ T1108] mutex_lock_nested+0x16/0x20 [ 404.709672][ T1108] ? mutex_lock_nested+0x16/0x20 [ 404.714974][ T1108] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 404.721779][ T1108] hashlimit_mt_check_v1+0x325/0x3ab [ 404.727233][ T1108] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 404.733046][ T1108] ? lock_downgrade+0x920/0x920 [ 404.737911][ T1108] ? xt_find_match+0xa6/0x280 [ 404.743038][ T1108] ? mutex_trylock+0x2d0/0x2d0 [ 404.747822][ T1108] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 404.753780][ T1108] xt_check_match+0x280/0x690 [ 404.758472][ T1108] ? xt_check_target+0x690/0x690 [ 404.763901][ T1108] ? pcpu_alloc_area+0x820/0x820 [ 404.768876][ T1108] ? mutex_unlock+0xd/0x10 [ 404.773740][ T1108] ? xt_find_match+0x73/0x280 [ 404.778448][ T1108] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 404.785166][ T1108] find_check_entry.isra.0+0x32f/0x920 [ 404.791081][ T1108] ? ipt_do_table+0x1b80/0x1b80 [ 404.795998][ T1108] ? lockdep_hardirqs_on+0x421/0x5e0 [ 404.801754][ T1108] ? trace_hardirqs_on+0x67/0x240 [ 404.806797][ T1108] ? kvfree+0x61/0x70 [ 404.812578][ T1108] translate_table+0xcb4/0x17d0 [ 404.817474][ T1108] ? compat_do_ipt_get_ctl+0x910/0x910 [ 404.823283][ T1108] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 404.829543][ T1108] ? _copy_from_user+0x12c/0x1a0 [ 404.834829][ T1108] do_ipt_set_ctl+0x2fe/0x4c2 [ 404.839526][ T1108] ? compat_do_ipt_set_ctl+0x170/0x170 [ 404.845646][ T1108] ? mutex_unlock+0xd/0x10 [ 404.850124][ T1108] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 404.856675][ T1108] nf_setsockopt+0x77/0xd0 [ 404.861587][ T1108] ip_setsockopt+0xdf/0x100 [ 404.866109][ T1108] tcp_setsockopt+0x8f/0xe0 [ 404.871033][ T1108] sock_common_setsockopt+0x94/0xd0 [ 404.876361][ T1108] __sys_setsockopt+0x261/0x4c0 [ 404.881609][ T1108] ? sock_create_kern+0x50/0x50 [ 404.886510][ T1108] ? down_read_non_owner+0x490/0x490 [ 404.892397][ T1108] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 404.898936][ T1108] ? handle_mm_fault+0x4ab/0xa50 [ 404.904246][ T1108] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 404.909723][ T1108] ? do_syscall_64+0x26/0x790 [ 404.914981][ T1108] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 404.921520][ T1108] ? do_syscall_64+0x26/0x790 [ 404.926603][ T1108] __x64_sys_setsockopt+0xbe/0x150 [ 404.932461][ T1108] do_syscall_64+0xfa/0x790 [ 404.937000][ T1108] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 404.944364][ T1108] RIP: 0033:0x441639 [ 404.948451][ T1108] Code: 00 09 33 32 62 69 74 20 41 74 6f 6d 69 63 20 6f 70 65 72 61 74 69 6f 6e 73 20 73 75 70 70 6f 72 74 65 64 3a 09 59 65 73 00 09 <36> 34 62 69 74 20 41 74 6f 6d 69 63 20 6f 70 65 72 61 74 69 6f 6e [ 404.968682][ T1108] RSP: 002b:00007ffd631e5128 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 404.977700][ T1108] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441639 [ 404.986133][ T1108] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 404.994604][ T1108] RBP: 000000000003e464 R08: 00000000000002e8 R09: 0000000000402440 [ 405.003082][ T1108] R10: 0000000020000640 R11: 0000000000000246 R12: 00000000004023b0 [ 405.011656][ T1108] R13: 0000000000402440 R14: 0000000000000000 R15: 0000000000000000 [ 405.019824][ T1108] INFO: task syz-executor297:9556 blocked for more than 145 seconds. [ 405.028765][ T1108] Not tainted 5.5.0-syzkaller #0 [ 405.034504][ T1108] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 405.043423][ T1108] syz-executor297 D28312 9556 9524 0x00000004 [ 405.049885][ T1108] Call Trace: [ 405.053558][ T1108] __schedule+0x934/0x1f90 [ 405.057996][ T1108] ? __sched_text_start+0x8/0x8 [ 405.063427][ T1108] ? lock_downgrade+0x920/0x920 [ 405.068295][ T1108] ? rwlock_bug.part.0+0x90/0x90 [ 405.074544][ T1108] schedule+0xdc/0x2b0 [ 405.078797][ T1108] schedule_preempt_disabled+0x13/0x20 [ 405.084910][ T1108] __mutex_lock+0x7ab/0x13c0 [ 405.089524][ T1108] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 405.096553][ T1108] ? mutex_trylock+0x2d0/0x2d0 [ 405.101614][ T1108] ? pcpu_next_md_free_region+0x176/0x350 [ 405.107350][ T1108] ? pcpu_alloc+0x100c/0x1380 [ 405.112428][ T1108] ? mark_held_locks+0xf0/0xf0 [ 405.117203][ T1108] ? __mutex_lock+0x458/0x13c0 [ 405.122401][ T1108] mutex_lock_nested+0x16/0x20 [ 405.127178][ T1108] ? mutex_lock_nested+0x16/0x20 [ 405.132502][ T1108] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 405.138866][ T1108] hashlimit_mt_check_v1+0x325/0x3ab [ 405.144620][ T1108] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 405.150088][ T1108] ? lock_downgrade+0x920/0x920 [ 405.155249][ T1108] ? xt_find_match+0xa6/0x280 [ 405.159945][ T1108] ? mutex_trylock+0x2d0/0x2d0 [ 405.165016][ T1108] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 405.170493][ T1108] xt_check_match+0x280/0x690 [ 405.175488][ T1108] ? xt_check_target+0x690/0x690 [ 405.180439][ T1108] ? pcpu_alloc_area+0x820/0x820 [ 405.185783][ T1108] ? mutex_unlock+0xd/0x10 [ 405.190214][ T1108] ? xt_find_match+0x73/0x280 [ 405.195219][ T1108] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 405.202914][ T1108] find_check_entry.isra.0+0x32f/0x920 [ 405.208403][ T1108] ? ipt_do_table+0x1b80/0x1b80 [ 405.213693][ T1108] ? lockdep_hardirqs_on+0x421/0x5e0 [ 405.219030][ T1108] ? trace_hardirqs_on+0x67/0x240 [ 405.224398][ T1108] ? kvfree+0x61/0x70 [ 405.228412][ T1108] translate_table+0xcb4/0x17d0 [ 405.233631][ T1108] ? compat_do_ipt_get_ctl+0x910/0x910 [ 405.239138][ T1108] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 405.245883][ T1108] ? _copy_from_user+0x12c/0x1a0 [ 405.251216][ T1108] do_ipt_set_ctl+0x2fe/0x4c2 [ 405.255909][ T1108] ? compat_do_ipt_set_ctl+0x170/0x170 [ 405.261683][ T1108] ? mutex_unlock+0xd/0x10 [ 405.266114][ T1108] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 405.272432][ T1108] nf_setsockopt+0x77/0xd0 [ 405.276863][ T1108] ip_setsockopt+0xdf/0x100 [ 405.281953][ T1108] tcp_setsockopt+0x8f/0xe0 [ 405.286487][ T1108] sock_common_setsockopt+0x94/0xd0 [ 405.292319][ T1108] __sys_setsockopt+0x261/0x4c0 [ 405.297502][ T1108] ? sock_create_kern+0x50/0x50 [ 405.302738][ T1108] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 405.308305][ T1108] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 405.314904][ T1108] ? handle_mm_fault+0x4ab/0xa50 [ 405.319866][ T1108] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 405.325832][ T1108] ? do_syscall_64+0x26/0x790 [ 405.331769][ T1108] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 405.337852][ T1108] ? do_syscall_64+0x26/0x790 [ 405.342845][ T1108] __x64_sys_setsockopt+0xbe/0x150 [ 405.347978][ T1108] do_syscall_64+0xfa/0x790 [ 405.352976][ T1108] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 405.358876][ T1108] RIP: 0033:0x441639 [ 405.363151][ T1108] Code: 00 09 33 32 62 69 74 20 41 74 6f 6d 69 63 20 6f 70 65 72 61 74 69 6f 6e 73 20 73 75 70 70 6f 72 74 65 64 3a 09 59 65 73 00 09 <36> 34 62 69 74 20 41 74 6f 6d 69 63 20 6f 70 65 72 61 74 69 6f 6e [ 405.383154][ T1108] RSP: 002b:00007ffd631e5128 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 405.391943][ T1108] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441639 [ 405.399925][ T1108] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 405.408348][ T1108] RBP: 000000000003e468 R08: 00000000000002e8 R09: 0000000000402440 [ 405.416599][ T1108] R10: 0000000020000640 R11: 0000000000000246 R12: 00000000004023b0 [ 405.424894][ T1108] R13: 0000000000402440 R14: 0000000000000000 R15: 0000000000000000 [ 405.433234][ T1108] INFO: task syz-executor297:9557 blocked for more than 145 seconds. [ 405.442644][ T1108] Not tainted 5.5.0-syzkaller #0 [ 405.448119][ T1108] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 405.457064][ T1108] syz-executor297 D27792 9557 9527 0x00000004 [ 405.464642][ T1108] Call Trace: [ 405.467973][ T1108] __schedule+0x934/0x1f90 [ 405.472773][ T1108] ? __sched_text_start+0x8/0x8 [ 405.477635][ T1108] ? lock_downgrade+0x920/0x920 [ 405.482828][ T1108] ? rwlock_bug.part.0+0x90/0x90 [ 405.487807][ T1108] schedule+0xdc/0x2b0 [ 405.492287][ T1108] schedule_preempt_disabled+0x13/0x20 [ 405.497764][ T1108] __mutex_lock+0x7ab/0x13c0 [ 405.502693][ T1108] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 405.509429][ T1108] ? mutex_trylock+0x2d0/0x2d0 [ 405.514574][ T1108] ? pcpu_next_md_free_region+0x176/0x350 [ 405.520491][ T1108] ? pcpu_alloc+0x100c/0x1380 [ 405.525549][ T1108] ? mark_held_locks+0xf0/0xf0 [ 405.530330][ T1108] ? __mutex_lock+0x458/0x13c0 [ 405.535455][ T1108] mutex_lock_nested+0x16/0x20 [ 405.540233][ T1108] ? mutex_lock_nested+0x16/0x20 [ 405.545516][ T1108] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 405.552354][ T1108] hashlimit_mt_check_v1+0x325/0x3ab [ 405.557659][ T1108] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 405.563750][ T1108] ? lock_downgrade+0x920/0x920 [ 405.568686][ T1108] ? xt_find_match+0xa6/0x280 [ 405.573720][ T1108] ? mutex_trylock+0x2d0/0x2d0 [ 405.578635][ T1108] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 405.584451][ T1108] xt_check_match+0x280/0x690 [ 405.589151][ T1108] ? xt_check_target+0x690/0x690 [ 405.595388][ T1108] ? pcpu_alloc_area+0x820/0x820 [ 405.600892][ T1108] ? mutex_unlock+0xd/0x10 [ 405.605490][ T1108] ? xt_find_match+0x73/0x280 [ 405.610358][ T1108] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 405.617086][ T1108] find_check_entry.isra.0+0x32f/0x920 [ 405.623051][ T1108] ? ipt_do_table+0x1b80/0x1b80 [ 405.627960][ T1108] ? lockdep_hardirqs_on+0x421/0x5e0 [ 405.633668][ T1108] ? trace_hardirqs_on+0x67/0x240 [ 405.638711][ T1108] ? kvfree+0x61/0x70 [ 405.643448][ T1108] translate_table+0xcb4/0x17d0 [ 405.648346][ T1108] ? compat_do_ipt_get_ctl+0x910/0x910 [ 405.654372][ T1108] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 405.661074][ T1108] ? _copy_from_user+0x12c/0x1a0 [ 405.666271][ T1108] do_ipt_set_ctl+0x2fe/0x4c2 [ 405.671456][ T1108] ? compat_do_ipt_set_ctl+0x170/0x170 [ 405.677137][ T1108] ? mutex_unlock+0xd/0x10 [ 405.681927][ T1108] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 405.688473][ T1108] nf_setsockopt+0x77/0xd0 [ 405.693263][ T1108] ip_setsockopt+0xdf/0x100 [ 405.697907][ T1108] tcp_setsockopt+0x8f/0xe0 [ 405.702801][ T1108] sock_common_setsockopt+0x94/0xd0 [ 405.708184][ T1108] __sys_setsockopt+0x261/0x4c0 [ 405.713393][ T1108] ? sock_create_kern+0x50/0x50 [ 405.718572][ T1108] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 405.725761][ T1108] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 405.732459][ T1108] ? handle_mm_fault+0x4ab/0xa50 [ 405.737656][ T1108] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 405.743758][ T1108] ? do_syscall_64+0x26/0x790 [ 405.748454][ T1108] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 405.755189][ T1108] ? do_syscall_64+0x26/0x790 [ 405.760184][ T1108] __x64_sys_setsockopt+0xbe/0x150 [ 405.765847][ T1108] do_syscall_64+0xfa/0x790 [ 405.770377][ T1108] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 405.776915][ T1108] RIP: 0033:0x441639 [ 405.781140][ T1108] Code: 00 09 33 32 62 69 74 20 41 74 6f 6d 69 63 20 6f 70 65 72 61 74 69 6f 6e 73 20 73 75 70 70 6f 72 74 65 64 3a 09 59 65 73 00 09 <36> 34 62 69 74 20 41 74 6f 6d 69 63 20 6f 70 65 72 61 74 69 6f 6e [ 405.801267][ T1108] RSP: 002b:00007ffd631e5128 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 405.809981][ T1108] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441639 [ 405.818516][ T1108] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 405.826956][ T1108] RBP: 000000000003e469 R08: 00000000000002e8 R09: 0000000000402440 [ 405.835446][ T1108] R10: 0000000020000640 R11: 0000000000000246 R12: 00000000004023b0 [ 405.843756][ T1108] R13: 0000000000402440 R14: 0000000000000000 R15: 0000000000000000 [ 405.853336][ T1108] [ 405.853336][ T1108] Showing all locks held in the system: [ 405.861396][ T1108] 1 lock held by khungtaskd/1108: [ 405.866562][ T1108] #0: ffffffff899a3dc0 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 [ 405.876332][ T1108] 3 locks held by kworker/0:48/2791: [ 405.881921][ T1108] 1 lock held by rsyslogd/9409: [ 405.886922][ T1108] #0: ffff888094720620 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 405.896233][ T1108] 2 locks held by getty/9499: [ 405.901298][ T1108] #0: ffff888091e57090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 405.910267][ T1108] #1: ffffc9000177b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 405.920437][ T1108] 2 locks held by getty/9500: [ 405.925662][ T1108] #0: ffff8880a056e090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 405.934941][ T1108] #1: ffffc900017eb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 405.945017][ T1108] 2 locks held by getty/9501: [ 405.949728][ T1108] #0: ffff8880a292e090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 405.959131][ T1108] #1: ffffc900017cb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 405.969233][ T1108] 2 locks held by getty/9502: [ 405.974215][ T1108] #0: ffff888099dd7090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 405.984913][ T1108] #1: ffffc9000175b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 405.995174][ T1108] 2 locks held by getty/9503: [ 405.999857][ T1108] #0: ffff8880a0417090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 406.009646][ T1108] #1: ffffc900017db2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 406.019863][ T1108] 2 locks held by getty/9504: [ 406.024835][ T1108] #0: ffff8880968c6090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 406.034155][ T1108] #1: ffffc900017bb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 406.044032][ T1108] 2 locks held by getty/9505: [ 406.048847][ T1108] #0: ffff8880a327a090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 406.058153][ T1108] #1: ffffc9000172b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 406.068035][ T1108] 1 lock held by syz-executor297/9538: [ 406.073776][ T1108] #0: ffffffff8a54eac0 (hashlimit_mutex){+.+.}, at: htable_put+0x21/0x220 [ 406.082682][ T1108] 1 lock held by syz-executor297/9553: [ 406.088285][ T1108] #0: ffffffff8a54eac0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 406.099331][ T1108] 1 lock held by syz-executor297/9554: [ 406.105067][ T1108] #0: ffffffff8a54eac0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 406.117306][ T1108] 1 lock held by syz-executor297/9555: [ 406.123053][ T1108] #0: ffffffff8a54eac0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 406.134078][ T1108] 1 lock held by syz-executor297/9556: [ 406.139537][ T1108] #0: ffffffff8a54eac0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 406.150687][ T1108] 1 lock held by syz-executor297/9557: [ 406.156160][ T1108] #0: ffffffff8a54eac0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 406.167468][ T1108] [ 406.169807][ T1108] ============================================= [ 406.169807][ T1108] [ 406.178622][ T1108] NMI backtrace for cpu 1 [ 406.183009][ T1108] CPU: 1 PID: 1108 Comm: khungtaskd Not tainted 5.5.0-syzkaller #0 [ 406.191088][ T1108] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 406.201146][ T1108] Call Trace: [ 406.204499][ T1108] dump_stack+0x197/0x210 [ 406.208846][ T1108] nmi_cpu_backtrace.cold+0x70/0xb2 [ 406.214082][ T1108] ? vprintk_func+0x86/0x189 [ 406.218725][ T1108] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 406.224372][ T1108] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 406.230377][ T1108] arch_trigger_cpumask_backtrace+0x14/0x20 [ 406.236282][ T1108] watchdog+0xb11/0x10c0 [ 406.240539][ T1108] kthread+0x361/0x430 [ 406.244625][ T1108] ? reset_hung_task_detector+0x30/0x30 [ 406.250551][ T1108] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 406.256417][ T1108] ret_from_fork+0x24/0x30 [ 406.260958][ T1108] Sending NMI from CPU 1 to CPUs 0: [ 406.266482][ C0] NMI backtrace for cpu 0 [ 406.266488][ C0] CPU: 0 PID: 2791 Comm: kworker/0:48 Not tainted 5.5.0-syzkaller #0 [ 406.266494][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 406.266499][ C0] Workqueue: events_power_efficient htable_gc [ 406.266505][ C0] RIP: 0010:lock_release+0x5fe/0x960 [ 406.266518][ C0] Code: 0f 85 99 fb ff ff e8 d2 95 a5 ff e9 8f fb ff ff 4c 89 ea 4c 89 e6 4c 89 ff e8 de 6b ff ff e9 4c fe ff ff 65 ff 05 8a 4a a7 7e <48> 8b 05 43 0a 1c 09 e8 66 5c 06 00 85 c0 74 0d 80 3d 74 ab 1b 09 [ 406.266522][ C0] RSP: 0018:ffffc900082efbb0 EFLAGS: 00000083 [ 406.266529][ C0] RAX: 0000000000000001 RBX: 1ffff9200105df7b RCX: ffffffff815acfa1 [ 406.266535][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8a7b3880 [ 406.266540][ C0] RBP: ffffc900082efc80 R08: 1ffffffff14f6710 R09: fffffbfff14f6711 [ 406.266546][ C0] R10: fffffbfff14f6710 R11: ffffffff8a7b3887 R12: ffffc9000dcd1060 [ 406.266551][ C0] R13: ffffffff8671c479 R14: ffffc900082efc58 R15: 0000000000000000 [ 406.266557][ C0] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 406.266562][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 406.266567][ C0] CR2: 0000000020000640 CR3: 0000000096ef1000 CR4: 00000000001406f0 [ 406.266573][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 406.266578][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 406.266581][ C0] Call Trace: [ 406.266584][ C0] ? __kasan_check_write+0x14/0x20 [ 406.266588][ C0] ? lock_downgrade+0x920/0x920 [ 406.266591][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 406.266594][ C0] ? lock_acquire+0x190/0x410 [ 406.266598][ C0] ? htable_selective_cleanup+0xa6/0x330 [ 406.266602][ C0] _raw_spin_unlock_bh+0x16/0x30 [ 406.266606][ C0] htable_selective_cleanup+0x219/0x330 [ 406.266610][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 406.266614][ C0] ? select_all+0x10/0x10 [ 406.266617][ C0] htable_gc+0x26/0xc0 [ 406.266620][ C0] process_one_work+0x9af/0x1740 [ 406.266624][ C0] ? pwq_dec_nr_in_flight+0x320/0x320 [ 406.266627][ C0] ? lock_acquire+0x190/0x410 [ 406.266631][ C0] worker_thread+0x98/0xe40 [ 406.266634][ C0] kthread+0x361/0x430 [ 406.266637][ C0] ? process_one_work+0x1740/0x1740 [ 406.266641][ C0] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 406.266645][ C0] ret_from_fork+0x24/0x30 [ 406.275259][ T1108] Kernel panic - not syncing: hung_task: blocked tasks [ 406.504940][ T1108] CPU: 1 PID: 1108 Comm: khungtaskd Not tainted 5.5.0-syzkaller #0 [ 406.513001][ T1108] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 406.523197][ T1108] Call Trace: [ 406.526505][ T1108] dump_stack+0x197/0x210 [ 406.530906][ T1108] panic+0x2e3/0x75c [ 406.534814][ T1108] ? add_taint.cold+0x16/0x16 [ 406.539502][ T1108] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 406.545148][ T1108] ? ___preempt_schedule+0x16/0x18 [ 406.550276][ T1108] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 406.556441][ T1108] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b [ 406.562603][ T1108] ? nmi_trigger_cpumask_backtrace+0x256/0x28b [ 406.568767][ T1108] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 406.575250][ T1108] watchdog+0xb22/0x10c0 [ 406.579756][ T1108] kthread+0x361/0x430 [ 406.583932][ T1108] ? reset_hung_task_detector+0x30/0x30 [ 406.589621][ T1108] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 406.595354][ T1108] ret_from_fork+0x24/0x30 [ 406.601743][ T1108] Kernel Offset: disabled [ 406.606080][ T1108] Rebooting in 86400 seconds..