Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 110.124958][ T27] audit: type=1400 audit(1579542698.538:37): avc: denied { watch } for pid=10600 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 113.420660][ T27] kauditd_printk_skb: 3 callbacks suppressed [ 113.420676][ T27] audit: type=1400 audit(1579542701.838:41): avc: denied { map } for pid=10688 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.22' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 817.714910][ T27] audit: type=1400 audit(1579543406.128:42): avc: denied { map } for pid=10700 comm="syz-executor256" path="/root/syz-executor256449748" 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 executing program [ 825.729475][T10709] xt_CT: You must specify a L4 protocol and not use inversions on it [ 825.731112][T10710] xt_CT: You must specify a L4 protocol and not use inversions on it [ 825.731655][T10711] xt_CT: You must specify a L4 protocol and not use inversions on it [ 825.739346][T10707] xt_CT: You must specify a L4 protocol and not use inversions on it [ 825.747581][T10712] 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 [ 825.758510][T10714] xt_CT: You must specify a L4 protocol and not use inversions on it [ 825.776259][T10713] xt_CT: You must specify a L4 protocol and not use inversions on it [ 825.785627][T10715] xt_CT: You must specify a L4 protocol and not use inversions on it [ 825.799833][T10716] xt_CT: You must specify a L4 protocol and not use inversions on it [ 825.810476][T10717] xt_CT: You must specify a L4 protocol and not use inversions on it [ 983.985205][ T1121] INFO: task syz-executor256:10714 blocked for more than 143 seconds. [ 984.001729][ T1121] Not tainted 5.5.0-rc7-syzkaller #0 [ 984.007789][ T1121] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 984.022208][ T1121] syz-executor256 D28248 10714 10706 0x00004004 [ 984.029026][ T1121] Call Trace: [ 984.032375][ T1121] __schedule+0x934/0x1f90 [ 984.037218][ T1121] ? __sched_text_start+0x8/0x8 [ 984.042127][ T1121] ? __lock_acquire+0x29c9/0x4a00 [ 984.047544][ T1121] schedule+0xdc/0x2b0 [ 984.051629][ T1121] schedule_timeout+0x717/0xc50 [ 984.056902][ T1121] ? __kasan_check_read+0x11/0x20 [ 984.061935][ T1121] ? usleep_range+0x170/0x170 [ 984.067192][ T1121] ? mark_held_locks+0xa4/0xf0 [ 984.072051][ T1121] ? _raw_spin_unlock_irq+0x23/0x80 [ 984.077807][ T1121] ? wait_for_completion+0x294/0x440 [ 984.083098][ T1121] ? _raw_spin_unlock_irq+0x23/0x80 [ 984.089136][ T1121] ? lockdep_hardirqs_on+0x421/0x5e0 [ 984.094760][ T1121] ? trace_hardirqs_on+0x67/0x240 [ 984.100203][ T1121] wait_for_completion+0x29c/0x440 [ 984.105664][ T1121] ? wait_for_completion_interruptible+0x470/0x470 [ 984.112330][ T1121] ? wake_up_q+0x140/0x140 [ 984.117100][ T1121] ? lockdep_hardirqs_on+0x421/0x5e0 [ 984.122401][ T1121] ? __kasan_check_read+0x11/0x20 [ 984.127990][ T1121] __flush_work+0x4fe/0xa50 [ 984.132523][ T1121] ? queue_delayed_work_on+0x210/0x210 [ 984.138466][ T1121] ? init_pwq+0x360/0x360 [ 984.142929][ T1121] ? __cancel_work_timer+0xc4/0x540 [ 984.148545][ T1121] ? __cancel_work_timer+0x1e0/0x540 [ 984.153840][ T1121] ? cancel_delayed_work_sync+0x1b/0x20 [ 984.159715][ T1121] ? __cancel_work_timer+0x1e0/0x540 [ 984.165329][ T1121] ? lockdep_hardirqs_on+0x421/0x5e0 [ 984.170629][ T1121] ? trace_hardirqs_on+0x67/0x240 [ 984.176063][ T1121] __cancel_work_timer+0x3d9/0x540 [ 984.181179][ T1121] ? mutex_trylock+0x2d0/0x2d0 [ 984.186595][ T1121] ? mod_delayed_work_on+0x200/0x200 [ 984.191915][ T1121] ? __kasan_check_write+0x14/0x20 [ 984.197554][ T1121] ? xt_ct_tg_check_v1+0x7c/0xa0 [ 984.202523][ T1121] ? xt_ct_tg_check_v2+0xa0/0xa0 [ 984.207940][ T1121] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 984.214222][ T1121] cancel_delayed_work_sync+0x1b/0x20 [ 984.219979][ T1121] htable_put+0x15f/0x220 [ 984.224749][ T1121] ? hashlimit_mt_destroy_v2+0x70/0x70 [ 984.230575][ T1121] hashlimit_mt_destroy_v1+0x50/0x70 [ 984.236203][ T1121] cleanup_match+0xde/0x170 [ 984.240736][ T1121] ? icmp_checkentry+0xa0/0xa0 [ 984.245880][ T1121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 984.252396][ T1121] find_check_entry.isra.0+0x454/0x920 [ 984.258186][ T1121] ? ipt_do_table+0x1b80/0x1b80 [ 984.263048][ T1121] ? lockdep_hardirqs_on+0x421/0x5e0 [ 984.268793][ T1121] ? kvfree+0x61/0x70 [ 984.272815][ T1121] translate_table+0xcb4/0x17d0 [ 984.278181][ T1121] ? compat_do_ipt_get_ctl+0x910/0x910 [ 984.283664][ T1121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 984.290358][ T1121] ? _copy_from_user+0x12c/0x1a0 [ 984.295600][ T1121] do_ipt_set_ctl+0x2fe/0x4c2 [ 984.300288][ T1121] ? compat_do_ipt_set_ctl+0x170/0x170 [ 984.306090][ T1121] ? mutex_unlock+0xd/0x10 [ 984.310584][ T1121] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 984.316964][ T1121] nf_setsockopt+0x77/0xd0 [ 984.321432][ T1121] ip_setsockopt+0xdf/0x100 [ 984.326477][ T1121] tcp_setsockopt+0x8f/0xe0 [ 984.331246][ T1121] sock_common_setsockopt+0x94/0xd0 [ 984.336915][ T1121] __sys_setsockopt+0x261/0x4c0 [ 984.341911][ T1121] ? sock_create_kern+0x50/0x50 [ 984.347312][ T1121] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 984.353117][ T1121] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 984.359871][ T1121] ? handle_mm_fault+0x4ab/0xa50 [ 984.364843][ T1121] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 984.370795][ T1121] ? do_syscall_64+0x26/0x790 [ 984.375849][ T1121] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 984.381927][ T1121] ? do_syscall_64+0x26/0x790 [ 984.386991][ T1121] __x64_sys_setsockopt+0xbe/0x150 [ 984.392116][ T1121] do_syscall_64+0xfa/0x790 [ 984.396948][ T1121] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 984.402839][ T1121] RIP: 0033:0x441269 [ 984.407080][ T1121] Code: 66 69 67 20 69 73 20 6e 6f 74 20 63 6c 65 61 6e 2e 0a 43 68 65 63 6b 20 65 72 72 6f 72 20 6c 6f 67 20 66 6f 72 20 64 65 74 61 <69> 6c 73 2c 20 66 69 78 20 65 72 72 6f 72 73 20 61 6e 64 20 72 65 [ 984.427105][ T1121] RSP: 002b:00007ffe193db838 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 984.435857][ T1121] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 984.443829][ T1121] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 984.452147][ T1121] RBP: 00000000000c7a0c R08: 0000000000000509 R09: 00000009004002c8 [ 984.460418][ T1121] R10: 00000000200002c0 R11: 0000000000000246 R12: 0000000000401fe0 [ 984.468702][ T1121] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 984.476990][ T1121] INFO: task syz-executor256:10719 blocked for more than 143 seconds. [ 984.485622][ T1121] Not tainted 5.5.0-rc7-syzkaller #0 [ 984.491418][ T1121] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 984.500832][ T1121] syz-executor256 D28296 10719 10705 0x00000004 [ 984.507478][ T1121] Call Trace: [ 984.510782][ T1121] __schedule+0x934/0x1f90 [ 984.515513][ T1121] ? __sched_text_start+0x8/0x8 [ 984.520372][ T1121] ? lock_downgrade+0x920/0x920 [ 984.525541][ T1121] ? rwlock_bug.part.0+0x90/0x90 [ 984.530553][ T1121] schedule+0xdc/0x2b0 [ 984.534631][ T1121] schedule_preempt_disabled+0x13/0x20 [ 984.540440][ T1121] __mutex_lock+0x7ab/0x13c0 [ 984.545372][ T1121] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 984.551884][ T1121] ? mutex_trylock+0x2d0/0x2d0 [ 984.557031][ T1121] ? pcpu_next_md_free_region+0x176/0x350 [ 984.562757][ T1121] ? pcpu_alloc+0x100c/0x1380 [ 984.567781][ T1121] ? mark_held_locks+0xf0/0xf0 [ 984.572549][ T1121] ? __mutex_lock+0x458/0x13c0 [ 984.577634][ T1121] mutex_lock_nested+0x16/0x20 [ 984.582401][ T1121] ? mutex_lock_nested+0x16/0x20 [ 984.587774][ T1121] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 984.594116][ T1121] hashlimit_mt_check_v1+0x325/0x3ab [ 984.599727][ T1121] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 984.605479][ T1121] ? lock_downgrade+0x920/0x920 [ 984.610333][ T1121] ? xt_find_match+0xa6/0x280 [ 984.615361][ T1121] ? mutex_trylock+0x2d0/0x2d0 [ 984.620138][ T1121] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 984.626056][ T1121] xt_check_match+0x280/0x690 [ 984.630742][ T1121] ? xt_check_target+0x690/0x690 [ 984.636101][ T1121] ? pcpu_alloc_area+0x820/0x820 [ 984.641072][ T1121] ? mutex_unlock+0xd/0x10 [ 984.645882][ T1121] ? xt_find_match+0x73/0x280 [ 984.650701][ T1121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 984.657467][ T1121] find_check_entry.isra.0+0x32f/0x920 [ 984.662955][ T1121] ? ipt_do_table+0x1b80/0x1b80 [ 984.668164][ T1121] ? lockdep_hardirqs_on+0x421/0x5e0 [ 984.673473][ T1121] ? trace_hardirqs_on+0x67/0x240 [ 984.678982][ T1121] ? kvfree+0x61/0x70 [ 984.683002][ T1121] translate_table+0xcb4/0x17d0 [ 984.688265][ T1121] ? compat_do_ipt_get_ctl+0x910/0x910 [ 984.693738][ T1121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 984.700500][ T1121] ? _copy_from_user+0x12c/0x1a0 [ 984.705791][ T1121] do_ipt_set_ctl+0x2fe/0x4c2 [ 984.710475][ T1121] ? compat_do_ipt_set_ctl+0x170/0x170 [ 984.716268][ T1121] ? mutex_unlock+0xd/0x10 [ 984.720693][ T1121] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 984.727140][ T1121] nf_setsockopt+0x77/0xd0 [ 984.731610][ T1121] ip_setsockopt+0xdf/0x100 [ 984.736775][ T1121] tcp_setsockopt+0x8f/0xe0 [ 984.741326][ T1121] sock_common_setsockopt+0x94/0xd0 [ 984.747012][ T1121] __sys_setsockopt+0x261/0x4c0 [ 984.751878][ T1121] ? sock_create_kern+0x50/0x50 [ 984.757109][ T1121] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 984.762666][ T1121] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 984.769270][ T1121] ? handle_mm_fault+0x4ab/0xa50 [ 984.774240][ T1121] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 984.780143][ T1121] ? do_syscall_64+0x26/0x790 [ 984.784839][ T1121] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 984.791347][ T1121] ? do_syscall_64+0x26/0x790 [ 984.796356][ T1121] __x64_sys_setsockopt+0xbe/0x150 [ 984.801478][ T1121] do_syscall_64+0xfa/0x790 [ 984.806331][ T1121] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 984.812222][ T1121] RIP: 0033:0x441269 [ 984.816445][ T1121] Code: 66 69 67 20 69 73 20 6e 6f 74 20 63 6c 65 61 6e 2e 0a 43 68 65 63 6b 20 65 72 72 6f 72 20 6c 6f 67 20 66 6f 72 20 64 65 74 61 <69> 6c 73 2c 20 66 69 78 20 65 72 72 6f 72 73 20 61 6e 64 20 72 65 [ 984.836516][ T1121] RSP: 002b:00007ffe193db838 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 984.844945][ T1121] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 984.853293][ T1121] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 984.861785][ T1121] RBP: 00000000000c9956 R08: 0000000000000509 R09: 00000000004002c8 [ 984.870286][ T1121] R10: 00000000200002c0 R11: 0000000000000246 R12: 0000000000401fe0 [ 984.878686][ T1121] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 984.887054][ T1121] INFO: task syz-executor256:10720 blocked for more than 144 seconds. [ 984.895614][ T1121] Not tainted 5.5.0-rc7-syzkaller #0 [ 984.901435][ T1121] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 984.910731][ T1121] syz-executor256 D28296 10720 10704 0x00004004 [ 984.917391][ T1121] Call Trace: [ 984.920867][ T1121] __schedule+0x934/0x1f90 [ 984.925613][ T1121] ? __sched_text_start+0x8/0x8 [ 984.930489][ T1121] ? lock_downgrade+0x920/0x920 [ 984.935904][ T1121] ? rwlock_bug.part.0+0x90/0x90 [ 984.940867][ T1121] schedule+0xdc/0x2b0 [ 984.944943][ T1121] schedule_preempt_disabled+0x13/0x20 [ 984.950868][ T1121] __mutex_lock+0x7ab/0x13c0 [ 984.955865][ T1121] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 984.962408][ T1121] ? mutex_trylock+0x2d0/0x2d0 [ 984.967749][ T1121] ? pcpu_next_md_free_region+0x176/0x350 [ 984.973594][ T1121] ? pcpu_alloc+0x100c/0x1380 [ 984.978777][ T1121] ? mark_held_locks+0xf0/0xf0 [ 984.983559][ T1121] ? __mutex_lock+0x458/0x13c0 [ 984.988888][ T1121] mutex_lock_nested+0x16/0x20 [ 984.993662][ T1121] ? mutex_lock_nested+0x16/0x20 [ 984.999235][ T1121] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 985.006013][ T1121] hashlimit_mt_check_v1+0x325/0x3ab [ 985.011440][ T1121] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 985.017377][ T1121] ? lock_downgrade+0x920/0x920 [ 985.022244][ T1121] ? xt_find_match+0xa6/0x280 [ 985.027600][ T1121] ? mutex_trylock+0x2d0/0x2d0 [ 985.032388][ T1121] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 985.038317][ T1121] xt_check_match+0x280/0x690 [ 985.043035][ T1121] ? xt_check_target+0x690/0x690 [ 985.048438][ T1121] ? pcpu_alloc_area+0x820/0x820 [ 985.053401][ T1121] ? mutex_unlock+0xd/0x10 [ 985.058442][ T1121] ? xt_find_match+0x73/0x280 [ 985.063268][ T1121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 985.070010][ T1121] find_check_entry.isra.0+0x32f/0x920 [ 985.075845][ T1121] ? ipt_do_table+0x1b80/0x1b80 [ 985.080715][ T1121] ? lockdep_hardirqs_on+0x421/0x5e0 [ 985.086444][ T1121] ? trace_hardirqs_on+0x67/0x240 [ 985.091489][ T1121] ? kvfree+0x61/0x70 [ 985.095864][ T1121] translate_table+0xcb4/0x17d0 [ 985.100766][ T1121] ? compat_do_ipt_get_ctl+0x910/0x910 [ 985.106705][ T1121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 985.113058][ T1121] ? _copy_from_user+0x12c/0x1a0 [ 985.118573][ T1121] do_ipt_set_ctl+0x2fe/0x4c2 [ 985.123278][ T1121] ? compat_do_ipt_set_ctl+0x170/0x170 [ 985.129391][ T1121] ? mutex_unlock+0xd/0x10 [ 985.133829][ T1121] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 985.140196][ T1121] nf_setsockopt+0x77/0xd0 [ 985.144764][ T1121] ip_setsockopt+0xdf/0x100 [ 985.149912][ T1121] tcp_setsockopt+0x8f/0xe0 [ 985.154573][ T1121] sock_common_setsockopt+0x94/0xd0 [ 985.160540][ T1121] __sys_setsockopt+0x261/0x4c0 [ 985.165824][ T1121] ? sock_create_kern+0x50/0x50 [ 985.170686][ T1121] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 985.176835][ T1121] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 985.183217][ T1121] ? handle_mm_fault+0x4ab/0xa50 [ 985.188618][ T1121] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 985.194116][ T1121] ? do_syscall_64+0x26/0x790 [ 985.199288][ T1121] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 985.205978][ T1121] ? do_syscall_64+0x26/0x790 [ 985.210793][ T1121] __x64_sys_setsockopt+0xbe/0x150 [ 985.216513][ T1121] do_syscall_64+0xfa/0x790 [ 985.221048][ T1121] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 985.227522][ T1121] RIP: 0033:0x441269 [ 985.231432][ T1121] Code: 66 69 67 20 69 73 20 6e 6f 74 20 63 6c 65 61 6e 2e 0a 43 68 65 63 6b 20 65 72 72 6f 72 20 6c 6f 67 20 66 6f 72 20 64 65 74 61 <69> 6c 73 2c 20 66 69 78 20 65 72 72 6f 72 73 20 61 6e 64 20 72 65 [ 985.251622][ T1121] RSP: 002b:00007ffe193db838 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 985.260729][ T1121] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 985.269169][ T1121] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 985.277464][ T1121] RBP: 00000000000c9969 R08: 0000000000000509 R09: 00000000004002c8 [ 985.285778][ T1121] R10: 00000000200002c0 R11: 0000000000000246 R12: 0000000000401fe0 [ 985.293759][ T1121] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 985.302159][ T1121] INFO: task syz-executor256:10721 blocked for more than 144 seconds. [ 985.310699][ T1121] Not tainted 5.5.0-rc7-syzkaller #0 [ 985.316751][ T1121] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 985.325869][ T1121] syz-executor256 D28296 10721 10703 0x00000004 [ 985.332222][ T1121] Call Trace: [ 985.335969][ T1121] __schedule+0x934/0x1f90 [ 985.340577][ T1121] ? __sched_text_start+0x8/0x8 [ 985.347119][ T1121] ? lock_downgrade+0x920/0x920 [ 985.352006][ T1121] ? rwlock_bug.part.0+0x90/0x90 [ 985.357401][ T1121] schedule+0xdc/0x2b0 [ 985.361709][ T1121] schedule_preempt_disabled+0x13/0x20 [ 985.367614][ T1121] __mutex_lock+0x7ab/0x13c0 [ 985.372241][ T1121] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 985.379206][ T1121] ? mutex_trylock+0x2d0/0x2d0 [ 985.384256][ T1121] ? pcpu_alloc+0x100c/0x1380 [ 985.389508][ T1121] ? mark_held_locks+0xf0/0xf0 [ 985.394302][ T1121] ? __mutex_lock+0x458/0x13c0 [ 985.399538][ T1121] mutex_lock_nested+0x16/0x20 [ 985.404308][ T1121] ? mutex_lock_nested+0x16/0x20 [ 985.409727][ T1121] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 985.416489][ T1121] hashlimit_mt_check_v1+0x325/0x3ab [ 985.422409][ T1121] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 985.428312][ T1121] ? lock_downgrade+0x920/0x920 [ 985.433728][ T1121] ? xt_find_match+0xa6/0x280 [ 985.438863][ T1121] ? mutex_trylock+0x2d0/0x2d0 [ 985.443664][ T1121] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 985.449765][ T1121] xt_check_match+0x280/0x690 [ 985.454461][ T1121] ? xt_check_target+0x690/0x690 [ 985.460173][ T1121] ? pcpu_alloc_area+0x820/0x820 [ 985.465551][ T1121] ? mutex_unlock+0xd/0x10 [ 985.469994][ T1121] ? xt_find_match+0x73/0x280 [ 985.474684][ T1121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 985.481547][ T1121] find_check_entry.isra.0+0x32f/0x920 [ 985.487642][ T1121] ? ipt_do_table+0x1b80/0x1b80 [ 985.492787][ T1121] ? lockdep_hardirqs_on+0x421/0x5e0 [ 985.499047][ T1121] ? trace_hardirqs_on+0x67/0x240 [ 985.504118][ T1121] ? kvfree+0x61/0x70 [ 985.508597][ T1121] translate_table+0xcb4/0x17d0 [ 985.513492][ T1121] ? compat_do_ipt_get_ctl+0x910/0x910 [ 985.519455][ T1121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 985.526167][ T1121] ? _copy_from_user+0x12c/0x1a0 [ 985.531137][ T1121] do_ipt_set_ctl+0x2fe/0x4c2 [ 985.536496][ T1121] ? compat_do_ipt_set_ctl+0x170/0x170 [ 985.541984][ T1121] ? mutex_unlock+0xd/0x10 [ 985.546793][ T1121] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 985.552792][ T1121] nf_setsockopt+0x77/0xd0 [ 985.557558][ T1121] ip_setsockopt+0xdf/0x100 [ 985.562067][ T1121] tcp_setsockopt+0x8f/0xe0 [ 985.566921][ T1121] sock_common_setsockopt+0x94/0xd0 [ 985.572220][ T1121] __sys_setsockopt+0x261/0x4c0 [ 985.577405][ T1121] ? sock_create_kern+0x50/0x50 [ 985.582319][ T1121] ? down_read_non_owner+0x490/0x490 [ 985.588056][ T1121] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 985.594911][ T1121] ? handle_mm_fault+0x4ab/0xa50 [ 985.600209][ T1121] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 985.605973][ T1121] ? do_syscall_64+0x26/0x790 [ 985.610657][ T1121] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 985.617062][ T1121] ? do_syscall_64+0x26/0x790 [ 985.621838][ T1121] __x64_sys_setsockopt+0xbe/0x150 [ 985.627384][ T1121] do_syscall_64+0xfa/0x790 [ 985.631920][ T1121] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 985.638408][ T1121] RIP: 0033:0x441269 [ 985.642335][ T1121] Code: 66 69 67 20 69 73 20 6e 6f 74 20 63 6c 65 61 6e 2e 0a 43 68 65 63 6b 20 65 72 72 6f 72 20 6c 6f 67 20 66 6f 72 20 64 65 74 61 <69> 6c 73 2c 20 66 69 78 20 65 72 72 6f 72 73 20 61 6e 64 20 72 65 [ 985.662517][ T1121] RSP: 002b:00007ffe193db838 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 985.671265][ T1121] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 985.679710][ T1121] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 985.688088][ T1121] RBP: 00000000000c99b0 R08: 0000000000000509 R09: 00000000004002c8 [ 985.696417][ T1121] R10: 00000000200002c0 R11: 0000000000000246 R12: 0000000000401fe0 [ 985.704391][ T1121] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 985.712815][ T1121] INFO: task syz-executor256:10722 blocked for more than 145 seconds. [ 985.721254][ T1121] Not tainted 5.5.0-rc7-syzkaller #0 [ 985.727324][ T1121] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 985.736273][ T1121] syz-executor256 D28296 10722 10701 0x00000004 [ 985.742627][ T1121] Call Trace: [ 985.746503][ T1121] __schedule+0x934/0x1f90 [ 985.750938][ T1121] ? __sched_text_start+0x8/0x8 [ 985.756123][ T1121] ? lock_downgrade+0x920/0x920 [ 985.760982][ T1121] ? rwlock_bug.part.0+0x90/0x90 [ 985.766257][ T1121] schedule+0xdc/0x2b0 [ 985.770337][ T1121] schedule_preempt_disabled+0x13/0x20 [ 985.776124][ T1121] __mutex_lock+0x7ab/0x13c0 [ 985.780732][ T1121] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 985.787807][ T1121] ? mutex_trylock+0x2d0/0x2d0 [ 985.792575][ T1121] ? pcpu_next_md_free_region+0x176/0x350 [ 985.799047][ T1121] ? pcpu_alloc+0x100c/0x1380 [ 985.803755][ T1121] ? mark_held_locks+0xf0/0xf0 [ 985.808943][ T1121] ? __mutex_lock+0x458/0x13c0 [ 985.813720][ T1121] mutex_lock_nested+0x16/0x20 [ 985.818906][ T1121] ? mutex_lock_nested+0x16/0x20 [ 985.823860][ T1121] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 985.831545][ T1121] hashlimit_mt_check_v1+0x325/0x3ab [ 985.837311][ T1121] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 985.842780][ T1121] ? lock_downgrade+0x920/0x920 [ 985.848095][ T1121] ? xt_find_match+0xa6/0x280 [ 985.852790][ T1121] ? mutex_trylock+0x2d0/0x2d0 [ 985.858135][ T1121] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 985.863616][ T1121] xt_check_match+0x280/0x690 [ 985.868671][ T1121] ? xt_check_target+0x690/0x690 [ 985.873621][ T1121] ? pcpu_alloc_area+0x820/0x820 [ 985.878919][ T1121] ? mutex_unlock+0xd/0x10 [ 985.883348][ T1121] ? xt_find_match+0x73/0x280 [ 985.888387][ T1121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 985.894640][ T1121] find_check_entry.isra.0+0x32f/0x920 [ 985.900555][ T1121] ? ipt_do_table+0x1b80/0x1b80 [ 985.905724][ T1121] ? lockdep_hardirqs_on+0x421/0x5e0 [ 985.911047][ T1121] ? trace_hardirqs_on+0x67/0x240 [ 985.916507][ T1121] ? kvfree+0x61/0x70 [ 985.920677][ T1121] translate_table+0xcb4/0x17d0 [ 985.926089][ T1121] ? compat_do_ipt_get_ctl+0x910/0x910 [ 985.931601][ T1121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 985.938314][ T1121] ? _copy_from_user+0x12c/0x1a0 [ 985.943284][ T1121] do_ipt_set_ctl+0x2fe/0x4c2 [ 985.948714][ T1121] ? compat_do_ipt_set_ctl+0x170/0x170 [ 985.956313][ T1121] ? mutex_unlock+0xd/0x10 [ 985.960743][ T1121] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 985.967168][ T1121] nf_setsockopt+0x77/0xd0 [ 985.971598][ T1121] ip_setsockopt+0xdf/0x100 [ 985.976661][ T1121] tcp_setsockopt+0x8f/0xe0 [ 985.981209][ T1121] sock_common_setsockopt+0x94/0xd0 [ 985.987088][ T1121] __sys_setsockopt+0x261/0x4c0 [ 985.991961][ T1121] ? sock_create_kern+0x50/0x50 [ 985.997289][ T1121] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 986.002866][ T1121] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 986.009574][ T1121] ? handle_mm_fault+0x4ab/0xa50 [ 986.014562][ T1121] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 986.020522][ T1121] ? do_syscall_64+0x26/0x790 [ 986.025646][ T1121] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 986.031766][ T1121] ? do_syscall_64+0x26/0x790 [ 986.036984][ T1121] __x64_sys_setsockopt+0xbe/0x150 [ 986.042127][ T1121] do_syscall_64+0xfa/0x790 [ 986.047123][ T1121] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 986.053058][ T1121] RIP: 0033:0x441269 [ 986.057408][ T1121] Code: 66 69 67 20 69 73 20 6e 6f 74 20 63 6c 65 61 6e 2e 0a 43 68 65 63 6b 20 65 72 72 6f 72 20 6c 6f 67 20 66 6f 72 20 64 65 74 61 <69> 6c 73 2c 20 66 69 78 20 65 72 72 6f 72 73 20 61 6e 64 20 72 65 [ 986.077529][ T1121] RSP: 002b:00007ffe193db838 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 986.086365][ T1121] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 986.094402][ T1121] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 986.103010][ T1121] RBP: 00000000000c9980 R08: 0000000000000509 R09: 00000000004002c8 [ 986.111560][ T1121] R10: 00000000200002c0 R11: 0000000000000246 R12: 0000000000401fe0 [ 986.120132][ T1121] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 986.128582][ T1121] INFO: task syz-executor256:10723 blocked for more than 145 seconds. [ 986.137186][ T1121] Not tainted 5.5.0-rc7-syzkaller #0 [ 986.143015][ T1121] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 986.152211][ T1121] syz-executor256 D27792 10723 10702 0x00000004 [ 986.158933][ T1121] Call Trace: [ 986.162238][ T1121] __schedule+0x934/0x1f90 [ 986.167169][ T1121] ? __sched_text_start+0x8/0x8 [ 986.172025][ T1121] ? lock_downgrade+0x920/0x920 [ 986.177266][ T1121] ? rwlock_bug.part.0+0x90/0x90 [ 986.182217][ T1121] schedule+0xdc/0x2b0 [ 986.186636][ T1121] schedule_preempt_disabled+0x13/0x20 [ 986.192097][ T1121] __mutex_lock+0x7ab/0x13c0 [ 986.197156][ T1121] ? hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 986.204111][ T1121] ? mutex_trylock+0x2d0/0x2d0 [ 986.209259][ T1121] ? pcpu_next_md_free_region+0x176/0x350 [ 986.214989][ T1121] ? pcpu_alloc+0x100c/0x1380 [ 986.220178][ T1121] ? mark_held_locks+0xf0/0xf0 [ 986.224963][ T1121] ? __mutex_lock+0x458/0x13c0 [ 986.230468][ T1121] mutex_lock_nested+0x16/0x20 [ 986.235591][ T1121] ? mutex_lock_nested+0x16/0x20 [ 986.240541][ T1121] hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 986.247204][ T1121] hashlimit_mt_check_v1+0x325/0x3ab [ 986.252496][ T1121] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 986.258299][ T1121] ? lock_downgrade+0x920/0x920 [ 986.263151][ T1121] ? xt_find_match+0xa6/0x280 [ 986.268231][ T1121] ? mutex_trylock+0x2d0/0x2d0 [ 986.273092][ T1121] ? hashlimit_mt_check_v2+0x3b0/0x3b0 [ 986.278888][ T1121] xt_check_match+0x280/0x690 [ 986.283667][ T1121] ? xt_check_target+0x690/0x690 [ 986.288930][ T1121] ? pcpu_alloc_area+0x820/0x820 [ 986.293882][ T1121] ? mutex_unlock+0xd/0x10 [ 986.298663][ T1121] ? xt_find_match+0x73/0x280 [ 986.303361][ T1121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 986.309913][ T1121] find_check_entry.isra.0+0x32f/0x920 [ 986.315795][ T1121] ? ipt_do_table+0x1b80/0x1b80 [ 986.320674][ T1121] ? lockdep_hardirqs_on+0x421/0x5e0 [ 986.326616][ T1121] ? trace_hardirqs_on+0x67/0x240 [ 986.332083][ T1121] ? kvfree+0x61/0x70 [ 986.336542][ T1121] translate_table+0xcb4/0x17d0 [ 986.341423][ T1121] ? compat_do_ipt_get_ctl+0x910/0x910 [ 986.347242][ T1121] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 986.353495][ T1121] ? _copy_from_user+0x12c/0x1a0 [ 986.358935][ T1121] do_ipt_set_ctl+0x2fe/0x4c2 [ 986.363626][ T1121] ? compat_do_ipt_set_ctl+0x170/0x170 [ 986.369435][ T1121] ? mutex_unlock+0xd/0x10 [ 986.373867][ T1121] ? nf_sockopt_find.constprop.0+0x226/0x290 [ 986.380398][ T1121] nf_setsockopt+0x77/0xd0 [ 986.384830][ T1121] ip_setsockopt+0xdf/0x100 [ 986.389736][ T1121] tcp_setsockopt+0x8f/0xe0 [ 986.394267][ T1121] sock_common_setsockopt+0x94/0xd0 [ 986.400000][ T1121] __sys_setsockopt+0x261/0x4c0 [ 986.404949][ T1121] ? sock_create_kern+0x50/0x50 [ 986.410145][ T1121] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 986.416043][ T1121] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 986.422290][ T1121] ? handle_mm_fault+0x4ab/0xa50 [ 986.427558][ T1121] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 986.433648][ T1121] ? do_syscall_64+0x26/0x790 [ 986.438724][ T1121] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 986.444991][ T1121] ? do_syscall_64+0x26/0x790 [ 986.449995][ T1121] __x64_sys_setsockopt+0xbe/0x150 [ 986.455943][ T1121] do_syscall_64+0xfa/0x790 [ 986.460472][ T1121] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 986.466797][ T1121] RIP: 0033:0x441269 [ 986.470725][ T1121] Code: 66 69 67 20 69 73 20 6e 6f 74 20 63 6c 65 61 6e 2e 0a 43 68 65 63 6b 20 65 72 72 6f 72 20 6c 6f 67 20 66 6f 72 20 64 65 74 61 <69> 6c 73 2c 20 66 69 78 20 65 72 72 6f 72 73 20 61 6e 64 20 72 65 [ 986.490896][ T1121] RSP: 002b:00007ffe193db838 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 986.499730][ T1121] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441269 [ 986.508235][ T1121] RDX: 0000000000000040 RSI: 0004000000000000 RDI: 0000000000000003 [ 986.516844][ T1121] RBP: 00000000000c9995 R08: 0000000000000509 R09: 00000000004002c8 [ 986.524819][ T1121] R10: 00000000200002c0 R11: 0000000000000246 R12: 0000000000401fe0 [ 986.533190][ T1121] R13: 0000000000402070 R14: 0000000000000000 R15: 0000000000000000 [ 986.541579][ T1121] [ 986.541579][ T1121] Showing all locks held in the system: [ 986.549667][ T1121] 1 lock held by khungtaskd/1121: [ 986.554698][ T1121] #0: ffffffff899a3dc0 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x279 [ 986.564357][ T1121] 3 locks held by kworker/1:100/3130: [ 986.570107][ T1121] 1 lock held by rsyslogd/10547: [ 986.575332][ T1121] #0: ffff888097e3b0e0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 986.583976][ T1121] 2 locks held by getty/10669: [ 986.589298][ T1121] #0: ffff8880a27c6090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 986.598552][ T1121] #1: ffffc900018db2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 986.608528][ T1121] 2 locks held by getty/10670: [ 986.613371][ T1121] #0: ffff88809fef6090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 986.622757][ T1121] #1: ffffc9000193b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 986.632744][ T1121] 2 locks held by getty/10671: [ 986.637801][ T1121] #0: ffff88809eb9d090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 986.647142][ T1121] #1: ffffc9000190b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 986.657129][ T1121] 2 locks held by getty/10672: [ 986.661886][ T1121] #0: ffff8880910a9090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 986.671385][ T1121] #1: ffffc900018fb2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 986.681305][ T1121] 2 locks held by getty/10673: [ 986.686641][ T1121] #0: ffff8880a2e85090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 986.696232][ T1121] #1: ffffc9000191b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 986.706165][ T1121] 2 locks held by getty/10674: [ 986.710923][ T1121] #0: ffff88807d4fd090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 986.720208][ T1121] #1: ffffc9000192b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 986.730111][ T1121] 2 locks held by getty/10675: [ 986.734868][ T1121] #0: ffff888097787090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 986.744163][ T1121] #1: ffffc9000187b2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x220/0x1bf0 [ 986.754192][ T1121] 1 lock held by syz-executor256/10714: [ 986.760016][ T1121] #0: ffffffff8a5500e0 (hashlimit_mutex){+.+.}, at: htable_put+0x21/0x220 [ 986.768948][ T1121] 1 lock held by syz-executor256/10719: [ 986.774484][ T1121] #0: ffffffff8a5500e0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 986.785704][ T1121] 1 lock held by syz-executor256/10720: [ 986.791248][ T1121] #0: ffffffff8a5500e0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 986.802486][ T1121] 1 lock held by syz-executor256/10721: [ 986.808366][ T1121] #0: ffffffff8a5500e0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 986.819403][ T1121] 1 lock held by syz-executor256/10722: [ 986.824962][ T1121] #0: ffffffff8a5500e0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 986.836195][ T1121] 1 lock held by syz-executor256/10723: [ 986.841742][ T1121] #0: ffffffff8a5500e0 (hashlimit_mutex){+.+.}, at: hashlimit_mt_check_common.isra.0+0x341/0x1500 [ 986.853034][ T1121] [ 986.855890][ T1121] ============================================= [ 986.855890][ T1121] [ 986.864461][ T1121] NMI backtrace for cpu 0 [ 986.868958][ T1121] CPU: 0 PID: 1121 Comm: khungtaskd Not tainted 5.5.0-rc7-syzkaller #0 [ 986.877398][ T1121] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 986.887461][ T1121] Call Trace: [ 986.890764][ T1121] dump_stack+0x197/0x210 [ 986.895131][ T1121] nmi_cpu_backtrace.cold+0x70/0xb2 [ 986.900438][ T1121] ? vprintk_func+0x86/0x189 [ 986.905114][ T1121] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 986.910772][ T1121] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 986.916782][ T1121] arch_trigger_cpumask_backtrace+0x14/0x20 [ 986.922689][ T1121] watchdog+0xb11/0x10c0 [ 986.926949][ T1121] kthread+0x361/0x430 [ 986.931028][ T1121] ? reset_hung_task_detector+0x30/0x30 [ 986.936674][ T1121] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 986.942509][ T1121] ret_from_fork+0x24/0x30 [ 986.947027][ T1121] Sending NMI from CPU 0 to CPUs 1: [ 986.952753][ C1] NMI backtrace for cpu 1 [ 986.952760][ C1] CPU: 1 PID: 3130 Comm: kworker/1:100 Not tainted 5.5.0-rc7-syzkaller #0 [ 986.952767][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 986.952771][ C1] Workqueue: events_power_efficient htable_gc [ 986.952778][ C1] RIP: 0010:check_memory_region+0x104/0x1a0 [ 986.952790][ C1] Code: 00 eb 0c 49 83 c0 01 4c 89 c8 4d 39 c8 74 10 41 80 38 00 74 ee 4b 8d 44 25 00 4d 85 c0 75 31 49 89 d9 49 29 c1 e9 68 ff ff ff <5b> b8 01 00 00 00 41 5c 41 5d 5d c3 4d 85 c9 74 ef 4d 01 e1 eb 09 [ 986.952794][ C1] RSP: 0018:ffffc900090cfab0 EFLAGS: 00000046 [ 986.952801][ C1] RAX: fffffbfff165e7b3 RBX: fffffbfff165e7b3 RCX: ffffffff815a8fbc [ 986.952807][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8b2f3d90 [ 986.952812][ C1] RBP: ffffc900090cfac8 R08: 1ffffffff165e7b2 R09: fffffbfff165e7b3 [ 986.952817][ C1] R10: fffffbfff165e7b2 R11: ffffffff8b2f3d97 R12: fffffbfff165e7b2 [ 986.952823][ C1] R13: ffffffff8a7b8070 R14: ffff88809e12eb40 R15: 0000000000000000 [ 986.952829][ C1] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 986.952833][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 986.952839][ C1] CR2: 00000000200002c0 CR3: 0000000093f40000 CR4: 00000000001406e0 [ 986.952844][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 986.952850][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 986.952852][ C1] Call Trace: [ 986.952856][ C1] __kasan_check_read+0x11/0x20 [ 986.952859][ C1] __lock_acquire+0x19ec/0x4a00 [ 986.952863][ C1] ? lockdep_hardirqs_on+0x421/0x5e0 [ 986.952866][ C1] ? retint_kernel+0x2b/0x2b [ 986.952870][ C1] ? trace_hardirqs_on_caller+0x6a/0x240 [ 986.952874][ C1] ? mark_held_locks+0xf0/0xf0 [ 986.952877][ C1] ? mark_held_locks+0xa4/0xf0 [ 986.952880][ C1] lock_acquire+0x190/0x410 [ 986.952884][ C1] ? htable_selective_cleanup+0xa6/0x330 [ 986.952888][ C1] _raw_spin_lock_bh+0x33/0x50 [ 986.952892][ C1] ? htable_selective_cleanup+0xa6/0x330 [ 986.952896][ C1] htable_selective_cleanup+0xa6/0x330 [ 986.952900][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 986.952903][ C1] ? select_all+0x10/0x10 [ 986.952906][ C1] htable_gc+0x26/0xc0 [ 986.952910][ C1] process_one_work+0x9af/0x1740 [ 986.952914][ C1] ? pwq_dec_nr_in_flight+0x320/0x320 [ 986.952917][ C1] ? lock_acquire+0x190/0x410 [ 986.952921][ C1] worker_thread+0x98/0xe40 [ 986.952924][ C1] kthread+0x361/0x430 [ 986.952927][ C1] ? process_one_work+0x1740/0x1740 [ 986.952931][ C1] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 986.952935][ C1] ret_from_fork+0x24/0x30 [ 986.961189][ T1121] Kernel panic - not syncing: hung_task: blocked tasks [ 987.223324][ T1121] CPU: 0 PID: 1121 Comm: khungtaskd Not tainted 5.5.0-rc7-syzkaller #0 [ 987.231564][ T1121] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 987.241626][ T1121] Call Trace: [ 987.245029][ T1121] dump_stack+0x197/0x210 [ 987.249433][ T1121] panic+0x2e3/0x75c [ 987.253381][ T1121] ? add_taint.cold+0x16/0x16 [ 987.258080][ T1121] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 987.263993][ T1121] ? ___preempt_schedule+0x16/0x18 [ 987.269135][ T1121] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 987.275323][ T1121] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b [ 987.281500][ T1121] ? nmi_trigger_cpumask_backtrace+0x256/0x28b [ 987.287679][ T1121] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 987.294022][ T1121] watchdog+0xb22/0x10c0 [ 987.298297][ T1121] kthread+0x361/0x430 [ 987.302376][ T1121] ? reset_hung_task_detector+0x30/0x30 [ 987.308020][ T1121] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 987.313935][ T1121] ret_from_fork+0x24/0x30 [ 987.320379][ T1121] Kernel Offset: disabled [ 987.324789][ T1121] Rebooting in 86400 seconds..