Warning: Permanently added '10.128.0.33' (ECDSA) to the list of known hosts. [ 40.053394] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 40.171944] audit: type=1400 audit(1579777974.572:36): avc: denied { map } for pid=7345 comm="syz-executor285" path="/root/syz-executor285101129" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 40.175312] ODEBUG: free active (active state 1) object type: rcu_head hint: (null) [ 40.207111] ------------[ cut here ]------------ [ 40.211863] WARNING: CPU: 0 PID: 7345 at lib/debugobjects.c:287 debug_print_object.cold+0xa7/0xdb [ 40.221311] Kernel panic - not syncing: panic_on_warn set ... [ 40.221311] [ 40.228836] CPU: 0 PID: 7345 Comm: syz-executor285 Not tainted 4.14.167-syzkaller #0 [ 40.236709] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.246054] Call Trace: [ 40.248629] dump_stack+0x142/0x197 [ 40.252241] panic+0x1f9/0x42d [ 40.255416] ? add_taint.cold+0x16/0x16 [ 40.259388] ? debug_print_object.cold+0xa7/0xdb [ 40.264127] ? debug_print_object.cold+0xa7/0xdb [ 40.269155] __warn.cold+0x2f/0x2f [ 40.272692] ? ist_end_non_atomic+0x10/0x10 [ 40.277114] ? debug_print_object.cold+0xa7/0xdb [ 40.281859] report_bug+0x216/0x254 [ 40.285480] do_error_trap+0x1bb/0x310 [ 40.289408] ? math_error+0x360/0x360 [ 40.293196] ? vprintk_emit+0x171/0x600 [ 40.297254] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.302084] do_invalid_op+0x1b/0x20 [ 40.305794] invalid_op+0x1b/0x40 [ 40.309344] RIP: 0010:debug_print_object.cold+0xa7/0xdb [ 40.314787] RSP: 0018:ffff8880a46ff110 EFLAGS: 00010086 [ 40.320138] RAX: 0000000000000051 RBX: 0000000000000003 RCX: 0000000000000000 [ 40.327585] RDX: 0000000000000000 RSI: ffffffff86cc2fe0 RDI: ffffed10148dfe18 [ 40.334906] RBP: ffff8880a46ff138 R08: 0000000000000051 R09: 0000000000000000 [ 40.342342] R10: 0000000000000000 R11: ffff88807f53e3c0 R12: ffffffff86cb86e0 [ 40.349761] R13: 0000000000000000 R14: 0000000000000001 R15: ffff888099e07bd0 [ 40.357038] debug_check_no_obj_freed+0x3f5/0x7b7 [ 40.361866] ? free_obj_work+0x6d0/0x6d0 [ 40.365914] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 40.371357] kfree+0xbd/0x270 [ 40.374574] free_tcf+0x13c/0x190 [ 40.378011] __tcf_idr_release+0x213/0x260 [ 40.382250] tcf_sample_init+0x7f2/0x960 [ 40.386412] ? tcf_sample_act+0x9f0/0x9f0 [ 40.390813] ? rcu_read_lock_sched_held+0x110/0x130 [ 40.395979] ? _raw_read_unlock+0x2d/0x50 [ 40.400278] tcf_action_init_1+0x53c/0xaa0 [ 40.404517] ? tcf_action_dump_old+0x80/0x80 [ 40.409369] ? lock_downgrade+0x740/0x740 [ 40.413505] ? nla_parse+0x186/0x240 [ 40.417211] tcf_action_init+0x2ab/0x480 [ 40.421263] ? tcf_action_init_1+0xaa0/0xaa0 [ 40.427360] ? memset+0x32/0x40 [ 40.430624] ? nla_parse+0x186/0x240 [ 40.434319] tc_ctl_action+0x30a/0x548 [ 40.438237] ? tca_action_gd+0x840/0x840 [ 40.442376] ? tca_action_gd+0x840/0x840 [ 40.446422] rtnetlink_rcv_msg+0x3da/0xb70 [ 40.450651] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 40.455222] ? netlink_deliver_tap+0x93/0x8f0 [ 40.459699] netlink_rcv_skb+0x14f/0x3c0 [ 40.463935] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 40.468520] ? lock_downgrade+0x740/0x740 [ 40.472661] ? netlink_ack+0x9a0/0x9a0 [ 40.476540] ? netlink_deliver_tap+0xba/0x8f0 [ 40.481142] rtnetlink_rcv+0x1d/0x30 [ 40.484840] netlink_unicast+0x44d/0x650 [ 40.488894] ? netlink_attachskb+0x6a0/0x6a0 [ 40.493297] ? security_netlink_send+0x81/0xb0 [ 40.497863] netlink_sendmsg+0x7c4/0xc60 [ 40.501936] ? netlink_unicast+0x650/0x650 [ 40.506153] ? security_socket_sendmsg+0x89/0xb0 [ 40.511017] ? netlink_unicast+0x650/0x650 [ 40.515346] sock_sendmsg+0xce/0x110 [ 40.519285] ___sys_sendmsg+0x70a/0x840 [ 40.523239] ? lock_downgrade+0x740/0x740 [ 40.527511] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 40.532249] ? do_raw_spin_unlock+0x174/0x260 [ 40.536913] ? _raw_spin_unlock+0x2d/0x50 [ 40.541058] ? do_huge_pmd_anonymous_page+0x2f9/0x1200 [ 40.546441] ? prep_transhuge_page+0xa0/0xa0 [ 40.550845] ? __handle_mm_fault+0x692/0x33d0 [ 40.555356] ? save_trace+0x290/0x290 [ 40.559163] ? copy_page_range+0x1de0/0x1de0 [ 40.563554] ? __do_page_fault+0x4e9/0xb80 [ 40.567783] ? __fget_light+0x172/0x1f0 [ 40.571776] ? __fdget+0x1b/0x20 [ 40.575236] ? sockfd_lookup_light+0xb4/0x160 [ 40.579744] __sys_sendmsg+0xb9/0x140 [ 40.583545] ? SyS_shutdown+0x170/0x170 [ 40.587504] SyS_sendmsg+0x2d/0x50 [ 40.591033] ? __sys_sendmsg+0x140/0x140 [ 40.595091] do_syscall_64+0x1e8/0x640 [ 40.598962] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.603851] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.609074] RIP: 0033:0x440369 [ 40.612245] RSP: 002b:00007ffdc8ba89c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 40.620280] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440369 [ 40.628109] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 40.635674] RBP: 00000000006ca018 R08: 000000000000000b R09: 00000000004002c8 [ 40.643063] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000401bf0 [ 40.651300] R13: 0000000000401c80 R14: 0000000000000000 R15: 0000000000000000 [ 40.658576] [ 40.658579] ====================================================== [ 40.658581] WARNING: possible circular locking dependency detected [ 40.658582] 4.14.167-syzkaller #0 Not tainted [ 40.658584] ------------------------------------------------------ [ 40.658585] syz-executor285/7345 is trying to acquire lock: [ 40.658586] ((console_sem).lock){-...}, at: [] down_trylock+0x13/0x70 [ 40.658590] [ 40.658592] but task is already holding lock: [ 40.658592] (&obj_hash[i].lock){-.-.}, at: [] debug_check_no_obj_freed+0x12d/0x7b7 [ 40.658597] [ 40.658598] which lock already depends on the new lock. [ 40.658599] [ 40.658600] [ 40.658601] the existing dependency chain (in reverse order) is: [ 40.658602] [ 40.658603] -> #5 (&obj_hash[i].lock){-.-.}: [ 40.658607] lock_acquire+0x16f/0x430 [ 40.658609] _raw_spin_lock_irqsave+0x95/0xcd [ 40.658610] debug_object_activate+0x10b/0x450 [ 40.658611] enqueue_hrtimer+0x27/0x3b0 [ 40.658613] hrtimer_start_range_ns+0x50a/0x10d0 [ 40.658614] schedule_hrtimeout_range_clock+0x17c/0x340 [ 40.658615] schedule_hrtimeout+0x25/0x30 [ 40.658617] wait_task_inactive+0x4ac/0x580 [ 40.658618] __kthread_bind_mask+0x24/0xc0 [ 40.658619] kthread_bind_mask+0x23/0x30 [ 40.658620] create_worker+0x31b/0x530 [ 40.658622] workqueue_init+0x57b/0x68a [ 40.658623] kernel_init_freeable+0x2af/0x532 [ 40.658624] kernel_init+0x12/0x162 [ 40.658625] ret_from_fork+0x24/0x30 [ 40.658626] [ 40.658627] -> #4 (hrtimer_bases.lock){-.-.}: [ 40.658631] lock_acquire+0x16f/0x430 [ 40.658632] _raw_spin_lock_irqsave+0x95/0xcd [ 40.658634] lock_hrtimer_base.isra.0+0x75/0x130 [ 40.658635] hrtimer_start_range_ns+0x7a/0x10d0 [ 40.658636] enqueue_task_rt+0x972/0xe40 [ 40.658638] __sched_setscheduler.constprop.0+0xc59/0x2340 [ 40.658640] _sched_setscheduler+0x10e/0x180 [ 40.658641] sched_setscheduler+0xe/0x10 [ 40.658642] watchdog_enable+0x10b/0x160 [ 40.658643] smpboot_thread_fn+0x444/0x960 [ 40.658645] kthread+0x319/0x430 [ 40.658646] ret_from_fork+0x24/0x30 [ 40.658647] [ 40.658647] -> #3 (&rt_b->rt_runtime_lock){-...}: [ 40.658651] lock_acquire+0x16f/0x430 [ 40.658653] _raw_spin_lock+0x2f/0x40 [ 40.658654] enqueue_task_rt+0x524/0xe40 [ 40.658656] __sched_setscheduler.constprop.0+0xc59/0x2340 [ 40.658657] _sched_setscheduler+0x10e/0x180 [ 40.658658] sched_setscheduler+0xe/0x10 [ 40.658659] watchdog_enable+0x10b/0x160 [ 40.658661] smpboot_thread_fn+0x444/0x960 [ 40.658662] kthread+0x319/0x430 [ 40.658663] ret_from_fork+0x24/0x30 [ 40.658664] [ 40.658664] -> #2 (&rq->lock){-.-.}: [ 40.658668] lock_acquire+0x16f/0x430 [ 40.658669] _raw_spin_lock+0x2f/0x40 [ 40.658671] task_fork_fair+0x63/0x5b0 [ 40.658672] sched_fork+0x3a6/0xc10 [ 40.658673] copy_process.part.0+0x15b7/0x6a70 [ 40.658674] _do_fork+0x19e/0xce0 [ 40.658676] kernel_thread+0x34/0x40 [ 40.658677] rest_init+0x24/0x1e2 [ 40.658678] start_kernel+0x6df/0x6fd [ 40.658679] x86_64_start_reservations+0x29/0x2b [ 40.658681] x86_64_start_kernel+0x77/0x7b [ 40.658682] secondary_startup_64+0xa5/0xb0 [ 40.658683] [ 40.658683] -> #1 (&p->pi_lock){-.-.}: [ 40.658688] lock_acquire+0x16f/0x430 [ 40.658689] _raw_spin_lock_irqsave+0x95/0xcd [ 40.658690] try_to_wake_up+0x79/0xf90 [ 40.658691] wake_up_process+0x10/0x20 [ 40.658693] __up.isra.0+0x136/0x1a0 [ 40.658694] up+0x9c/0xe0 [ 40.658695] __up_console_sem+0xad/0x1b0 [ 40.658696] console_unlock+0x59d/0xed0 [ 40.658697] vprintk_emit+0x1f9/0x600 [ 40.658699] vprintk_default+0x28/0x30 [ 40.658700] vprintk_func+0x5d/0x159 [ 40.658701] printk+0x9e/0xbc [ 40.658702] kauditd_hold_skb.cold+0x3e/0x4d [ 40.658704] kauditd_send_queue+0xfe/0x140 [ 40.658705] kauditd_thread+0x644/0x860 [ 40.658706] kthread+0x319/0x430 [ 40.658707] ret_from_fork+0x24/0x30 [ 40.658708] [ 40.658708] -> #0 ((console_sem).lock){-...}: [ 40.658713] __lock_acquire+0x2cb3/0x4620 [ 40.658714] lock_acquire+0x16f/0x430 [ 40.658715] _raw_spin_lock_irqsave+0x95/0xcd [ 40.658716] down_trylock+0x13/0x70 [ 40.658718] __down_trylock_console_sem+0x9c/0x200 [ 40.658719] console_trylock+0x17/0x80 [ 40.658720] vprintk_emit+0x1eb/0x600 [ 40.658721] vprintk_default+0x28/0x30 [ 40.658723] vprintk_func+0x5d/0x159 [ 40.658724] printk+0x9e/0xbc [ 40.658725] debug_print_object.cold+0xa7/0xdb [ 40.658727] debug_check_no_obj_freed+0x3f5/0x7b7 [ 40.658728] kfree+0xbd/0x270 [ 40.658729] free_tcf+0x13c/0x190 [ 40.658730] __tcf_idr_release+0x213/0x260 [ 40.658731] tcf_sample_init+0x7f2/0x960 [ 40.658733] tcf_action_init_1+0x53c/0xaa0 [ 40.658734] tcf_action_init+0x2ab/0x480 [ 40.658735] tc_ctl_action+0x30a/0x548 [ 40.658737] rtnetlink_rcv_msg+0x3da/0xb70 [ 40.658738] netlink_rcv_skb+0x14f/0x3c0 [ 40.658739] rtnetlink_rcv+0x1d/0x30 [ 40.658740] netlink_unicast+0x44d/0x650 [ 40.658741] netlink_sendmsg+0x7c4/0xc60 [ 40.658743] sock_sendmsg+0xce/0x110 [ 40.658744] ___sys_sendmsg+0x70a/0x840 [ 40.658745] __sys_sendmsg+0xb9/0x140 [ 40.658746] SyS_sendmsg+0x2d/0x50 [ 40.658748] do_syscall_64+0x1e8/0x640 [ 40.658749] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.658750] [ 40.658751] other info that might help us debug this: [ 40.658752] [ 40.658753] Chain exists of: [ 40.658753] (console_sem).lock --> hrtimer_bases.lock --> &obj_hash[i].lock [ 40.658759] [ 40.658760] Possible unsafe locking scenario: [ 40.658761] [ 40.658762] CPU0 CPU1 [ 40.658763] ---- ---- [ 40.658764] lock(&obj_hash[i].lock); [ 40.658767] lock(hrtimer_bases.lock); [ 40.658770] lock(&obj_hash[i].lock); [ 40.658772] lock((console_sem).lock); [ 40.658775] [ 40.658776] *** DEADLOCK *** [ 40.658776] [ 40.658778] 2 locks held by syz-executor285/7345: [ 40.658778] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x339/0xb70 [ 40.658783] #1: (&obj_hash[i].lock){-.-.}, at: [] debug_check_no_obj_freed+0x12d/0x7b7 [ 40.658788] [ 40.658789] stack backtrace: [ 40.658791] CPU: 0 PID: 7345 Comm: syz-executor285 Not tainted 4.14.167-syzkaller #0 [ 40.658793] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.658794] Call Trace: [ 40.658795] dump_stack+0x142/0x197 [ 40.658797] print_circular_bug.isra.0.cold+0x1cc/0x28f [ 40.658798] __lock_acquire+0x2cb3/0x4620 [ 40.658799] ? string+0x184/0x1d0 [ 40.658800] ? trace_hardirqs_on+0x10/0x10 [ 40.658801] ? netdev_bits+0xb0/0xb0 [ 40.658803] ? format_decode+0x1d8/0x930 [ 40.658804] ? kvm_clock_read+0x23/0x40 [ 40.658805] ? kvm_sched_clock_read+0x9/0x20 [ 40.658806] lock_acquire+0x16f/0x430 [ 40.658807] ? down_trylock+0x13/0x70 [ 40.658809] ? vprintk_emit+0x109/0x600 [ 40.658810] _raw_spin_lock_irqsave+0x95/0xcd [ 40.658811] ? down_trylock+0x13/0x70 [ 40.658812] ? vprintk_emit+0x1eb/0x600 [ 40.658813] down_trylock+0x13/0x70 [ 40.658815] ? vprintk_emit+0x1eb/0x600 [ 40.658816] __down_trylock_console_sem+0x9c/0x200 [ 40.658817] console_trylock+0x17/0x80 [ 40.658818] vprintk_emit+0x1eb/0x600 [ 40.658819] vprintk_default+0x28/0x30 [ 40.658821] vprintk_func+0x5d/0x159 [ 40.658822] printk+0x9e/0xbc [ 40.658823] ? show_regs_print_info+0x63/0x63 [ 40.658824] ? lock_acquire+0x16f/0x430 [ 40.658826] ? debug_check_no_obj_freed+0x12d/0x7b7 [ 40.658827] debug_print_object.cold+0xa7/0xdb [ 40.658828] debug_check_no_obj_freed+0x3f5/0x7b7 [ 40.658829] ? free_obj_work+0x6d0/0x6d0 [ 40.658831] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 40.658832] kfree+0xbd/0x270 [ 40.658833] free_tcf+0x13c/0x190 [ 40.658834] __tcf_idr_release+0x213/0x260 [ 40.658836] tcf_sample_init+0x7f2/0x960 [ 40.658837] ? tcf_sample_act+0x9f0/0x9f0 [ 40.658838] ? rcu_read_lock_sched_held+0x110/0x130 [ 40.658839] ? _raw_read_unlock+0x2d/0x50 [ 40.658841] tcf_action_init_1+0x53c/0xaa0 [ 40.658842] ? tcf_action_dump_old+0x80/0x80 [ 40.658843] ? lock_downgrade+0x740/0x740 [ 40.658844] ? nla_parse+0x186/0x240 [ 40.658846] tcf_action_init+0x2ab/0x480 [ 40.658847] ? tcf_action_init_1+0xaa0/0xaa0 [ 40.658848] ? memset+0x32/0x40 [ 40.658849] ? nla_parse+0x186/0x240 [ 40.658850] tc_ctl_action+0x30a/0x548 [ 40.658852] ? tca_action_gd+0x840/0x840 [ 40.658853] ? tca_action_gd+0x840/0x840 [ 40.658854] rtnetlink_rcv_msg+0x3da/0xb70 [ 40.658855] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 40.658857] ? netlink_deliver_tap+0x93/0x8f0 [ 40.658858] netlink_rcv_skb+0x14f/0x3c0 [ 40.658859] ? rtnl_bridge_getlink+0x7a0/0x7a0 [ 40.658860] ? lock_downgrade+0x740/0x740 [ 40.658862] ? netlink_ack+0x9a0/0x9a0 [ 40.658863] ? netlink_deliver_tap+0xba/0x8f0 [ 40.658864] rtnetlink_rcv+0x1d/0x30 [ 40.658865] netlink_unicast+0x44d/0x650 [ 40.658867] ? netlink_attachskb+0x6a0/0x6a0 [ 40.658868] ? security_netlink_send+0x81/0xb0 [ 40.658869] netlink_sendmsg+0x7c4/0xc60 [ 40.658871] ? netlink_unicast+0x650/0x650 [ 40.658872] ? security_socket_sendmsg+0x89/0xb0 [ 40.658873] ? netlink_unicast+0x650/0x650 [ 40.658874] sock_sendmsg+0xce/0x110 [ 40.658876] ___sys_sendmsg+0x70a/0x840 [ 40.658877] ? lock_downgrade+0x740/0x740 [ 40.658878] ? copy_msghdr_from_user+0x3f0/0x3f0 [ 40.658880] ? do_raw_spin_unlock+0x174/0x260 [ 40.658881] ? _raw_spin_unlock+0x2d/0x50 [ 40.658882] ? do_huge_pmd_anonymous_page+0x2f9/0x1200 [ 40.658883] ? prep_transhuge_page+0xa0/0xa0 [ 40.658885] ? __handle_mm_fault+0x692/0x33d0 [ 40.658886] ? save_trace+0x290/0x290 [ 40.658887] ? copy_page_range+0x1de0/0x1de0 [ 40.658889] ? __do_page_fault+0x4e9/0xb80 [ 40.658890] ? __fget_light+0x172/0x1f0 [ 40.658891] ? __fdget+0x1b/0x20 [ 40.658892] ? sockfd_lookup_light+0xb4/0x160 [ 40.658893] __sys_sendmsg+0xb9/0x140 [ 40.658894] ? SyS_shutdown+0x170/0x170 [ 40.658895] SyS_sendmsg+0x2d/0x50 [ 40.658897] ? __sys_sendmsg+0x140/0x140 [ 40.658898] do_syscall_64+0x1e8/0x640 [ 40.658899] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.658901] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.658902] RIP: 0033:0x440369 [ 40.658903] RSP: 002b:00007ffdc8ba89c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 40.658906] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440369 [ 40.658908] RDX: 0000000000000000 RSI: 0000000020002980 RDI: 0000000000000003 [ 40.658910] RBP: 00000000006ca018 R08: 000000000000000b R09: 00000000004002c8 [ 40.658911] R10: 0000000000000040 R11: 0000000000000246 [ 40.658915] Lost 1 message(s)! [ 40.660712] Kernel Offset: disabled [ 41.726745] Rebooting in 86400 seconds..