[ 150.264502] audit: type=1400 audit(1544516221.548:36): avc: denied { map } for pid=6261 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 150.289774] cron (6260) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts. [ 815.807138] audit: type=1400 audit(1544516887.088:37): avc: denied { map } for pid=6268 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/12/11 08:28:07 parsed 1 programs [ 816.440694] audit: type=1400 audit(1544516887.718:38): avc: denied { map } for pid=6268 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=14833 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2018/12/11 08:28:09 executed programs: 0 [ 818.062733] IPVS: ftp: loaded support on port[0] = 21 [ 818.321786] bridge0: port 1(bridge_slave_0) entered blocking state [ 818.328706] bridge0: port 1(bridge_slave_0) entered disabled state [ 818.336240] device bridge_slave_0 entered promiscuous mode [ 818.356082] bridge0: port 2(bridge_slave_1) entered blocking state [ 818.362689] bridge0: port 2(bridge_slave_1) entered disabled state [ 818.369634] device bridge_slave_1 entered promiscuous mode [ 818.387738] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 818.407606] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 818.458313] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 818.479230] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 818.556718] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 818.564293] team0: Port device team_slave_0 added [ 818.581171] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 818.588553] team0: Port device team_slave_1 added [ 818.607072] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 818.626981] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 818.646241] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 818.665923] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 818.818324] bridge0: port 2(bridge_slave_1) entered blocking state [ 818.824913] bridge0: port 2(bridge_slave_1) entered forwarding state [ 818.831732] bridge0: port 1(bridge_slave_0) entered blocking state [ 818.838060] bridge0: port 1(bridge_slave_0) entered forwarding state [ 819.365939] 8021q: adding VLAN 0 to HW filter on device bond0 [ 819.419685] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 819.474670] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 819.480790] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 819.488940] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 819.535187] 8021q: adding VLAN 0 to HW filter on device team0 [ 819.832249] audit: type=1400 audit(1544516891.118:39): avc: denied { associate } for pid=6281 comm="syz-executor0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 819.880394] audit: type=1400 audit(1544516891.158:40): avc: denied { create } for pid=6541 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 819.910165] audit: type=1400 audit(1544516891.168:41): avc: denied { write } for pid=6541 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 819.935816] audit: type=1400 audit(1544516891.178:42): avc: denied { read } for pid=6541 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 972.791400] INFO: task syz-executor0:6586 blocked for more than 140 seconds. [ 972.799037] Not tainted 4.20.0-rc6+ #151 [ 972.803947] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 972.812226] syz-executor0 D23328 6586 6281 0x00000004 [ 972.817847] Call Trace: [ 972.820473] __schedule+0x8cf/0x21d0 [ 972.826965] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 972.831962] ? __sched_text_start+0x8/0x8 [ 972.836140] ? zap_class+0x640/0x640 [ 972.839861] ? lock_downgrade+0x900/0x900 [ 972.844771] ? check_preemption_disabled+0x48/0x280 [ 972.849802] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 972.854981] ? kasan_check_read+0x11/0x20 [ 972.859137] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 972.864618] ? find_held_lock+0x36/0x1c0 [ 972.868674] schedule+0xfe/0x460 [ 972.872240] ? __mutex_lock+0xafa/0x16f0 [ 972.876289] ? __schedule+0x21d0/0x21d0 [ 972.880249] ? kasan_check_read+0x11/0x20 [ 972.884584] ? do_raw_spin_unlock+0xa7/0x330 [ 972.888982] ? do_raw_spin_trylock+0x270/0x270 [ 972.893753] ? ww_mutex_lock.part.8+0xf0/0xf0 [ 972.898246] ? mutex_destroy+0x200/0x200 [ 972.902530] schedule_preempt_disabled+0x13/0x20 [ 972.907278] __mutex_lock+0xaff/0x16f0 [ 972.911171] ? ctrl_getfamily+0x313/0x420 [ 972.915545] ? mutex_trylock+0x2b0/0x2b0 [ 972.919597] ? find_held_lock+0x36/0x1c0 [ 972.923872] ? zap_class+0x640/0x640 [ 972.927584] ? find_held_lock+0x36/0x1c0 [ 972.931866] ? lock_acquire+0x1ed/0x520 [ 972.935829] ? ctrl_getfamily+0x305/0x420 [ 972.939963] ? lock_release+0xa00/0xa00 [ 972.944213] ? mutex_trylock+0x2b0/0x2b0 [ 972.948305] ? down_read+0x8d/0x120 [ 972.952175] ? ctrl_getfamily+0x305/0x420 [ 972.956344] ? __down_interruptible+0x700/0x700 [ 972.961045] ? __nla_parse+0x12c/0x3e0 [ 972.965172] mutex_lock_nested+0x16/0x20 [ 972.969225] ? mutex_lock_nested+0x16/0x20 [ 972.974141] ctrl_getfamily+0x313/0x420 [ 972.978126] genl_family_rcv_msg+0x8a7/0x11a0 [ 972.982839] ? genl_unregister_family+0x8a0/0x8a0 [ 972.987672] ? lock_downgrade+0x900/0x900 [ 972.992089] ? check_preemption_disabled+0x48/0x280 [ 972.997100] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 973.002494] ? kasan_check_read+0x11/0x20 [ 973.006705] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 973.012191] ? rcu_softirq_qs+0x20/0x20 [ 973.016167] genl_rcv_msg+0xc6/0x168 [ 973.019869] netlink_rcv_skb+0x172/0x440 [ 973.024126] ? genl_family_rcv_msg+0x11a0/0x11a0 [ 973.028874] ? netlink_ack+0xb80/0xb80 [ 973.032940] ? down_read+0x8d/0x120 [ 973.036564] genl_rcv+0x28/0x40 [ 973.039831] netlink_unicast+0x5a5/0x760 [ 973.044178] ? netlink_attachskb+0x9a0/0x9a0 [ 973.048637] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 973.054406] netlink_sendmsg+0xa18/0xfc0 [ 973.058465] ? netlink_unicast+0x760/0x760 [ 973.062895] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 973.068475] ? security_socket_sendmsg+0x94/0xc0 [ 973.073463] ? netlink_unicast+0x760/0x760 [ 973.077727] sock_sendmsg+0xd5/0x120 [ 973.081700] ___sys_sendmsg+0x7fd/0x930 [ 973.085666] ? find_held_lock+0x36/0x1c0 [ 973.089720] ? copy_msghdr_from_user+0x580/0x580 [ 973.094760] ? __fd_install+0x2b5/0x8f0 [ 973.098729] ? check_preemption_disabled+0x48/0x280 [ 973.104418] ? __fget_light+0x2e9/0x430 [ 973.108399] ? fget_raw+0x20/0x20 [ 973.112036] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 973.117563] ? __fd_install+0x2f9/0x8f0 [ 973.121726] ? get_unused_fd_flags+0x1a0/0x1a0 [ 973.126303] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 973.132033] ? sockfd_lookup_light+0xc5/0x160 [ 973.136801] __sys_sendmsg+0x11d/0x280 [ 973.140675] ? __ia32_sys_shutdown+0x80/0x80 [ 973.145300] ? do_syscall_64+0x9a/0x820 [ 973.149265] ? do_syscall_64+0x9a/0x820 [ 973.153464] ? trace_hardirqs_off_caller+0x310/0x310 [ 973.158561] __x64_sys_sendmsg+0x78/0xb0 [ 973.162817] do_syscall_64+0x1b9/0x820 [ 973.166700] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 973.172268] ? syscall_return_slowpath+0x5e0/0x5e0 [ 973.177188] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 973.182307] ? trace_hardirqs_on_caller+0x310/0x310 [ 973.187316] ? prepare_exit_to_usermode+0x291/0x3b0 [ 973.192533] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 973.197387] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 973.202775] RIP: 0033:0x411231 [ 973.205960] Code: 01 4c 89 54 24 28 e9 6f fa ff ff 49 8b 7c 24 70 8b 35 43 c4 24 00 ff 15 ed 83 24 00 85 c0 0f 85 b3 fe ff ff 49 8b 7c 24 70 be <20> 13 41 00 ff 15 dd 83 24 00 85 c0 0f 85 9b fe ff ff 49 8b 7c 24 [ 973.225117] RSP: 002b:00007fedfae5a9c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002e [ 973.233533] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000411231 [ 973.240794] RDX: 0000000000000000 RSI: 00007fedfae5aa00 RDI: 0000000000000008 [ 973.248252] RBP: 0000000000000008 R08: 00007fedfae5a9d0 R09: 000000000072bfa0 [ 973.255726] R10: 0000000000000000 R11: 0000000000000293 R12: 00007fedfae5aa40 [ 973.263167] R13: 00000000004cc498 R14: 00000000004d9968 R15: 00000000ffffffff [ 973.270581] [ 973.270581] Showing all locks held in the system: [ 973.277183] 1 lock held by khungtaskd/1019: [ 973.281866] #0: 0000000037177328 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 [ 973.290470] 1 lock held by rsyslogd/6114: [ 973.294857] #0: 00000000c7cdec10 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 [ 973.303022] 2 locks held by getty/6236: [ 973.306980] #0: 00000000ee8013ef (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 973.315500] #1: 0000000035b00336 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 973.324564] 2 locks held by getty/6237: [ 973.328522] #0: 00000000b8177c84 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 973.337007] #1: 000000003a3d1b2b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 973.346110] 2 locks held by getty/6238: [ 973.350068] #0: 000000000c22e0c1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 973.358490] #1: 00000000ab4fd834 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 973.367986] 2 locks held by getty/6239: [ 973.372166] #0: 000000008e0adb33 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 973.380394] #1: 00000000a9397083 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 973.389427] 2 locks held by getty/6240: [ 973.393596] #0: 00000000df8ef64e (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 973.402041] #1: 00000000e6608498 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 973.410881] 2 locks held by getty/6241: [ 973.415033] #0: 000000003c07cf12 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 973.423452] #1: 0000000063f4d993 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 973.432541] 2 locks held by getty/6242: [ 973.436496] #0: 00000000260a9821 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 973.444945] #1: 000000004fece6cf (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 [ 973.454029] 2 locks held by syz-executor0/6584: [ 973.458712] 2 locks held by syz-executor0/6586: [ 973.463553] #0: 000000008f85a4a3 (cb_lock){++++}, at: ctrl_getfamily+0x305/0x420 [ 973.471180] #1: 0000000091d95376 (genl_mutex){+.+.}, at: ctrl_getfamily+0x313/0x420 [ 973.479503] [ 973.481123] ============================================= [ 973.481123] [ 973.488331] NMI backtrace for cpu 0 [ 973.492003] CPU: 0 PID: 1019 Comm: khungtaskd Not tainted 4.20.0-rc6+ #151 [ 973.499055] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 973.508722] Call Trace: [ 973.511340] dump_stack+0x244/0x39d [ 973.514967] ? dump_stack_print_info.cold.1+0x20/0x20 [ 973.520139] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 973.525658] nmi_cpu_backtrace.cold.2+0x5c/0xa1 [ 973.530343] ? lapic_can_unplug_cpu.cold.27+0x3f/0x3f [ 973.535522] nmi_trigger_cpumask_backtrace+0x1e8/0x22a [ 973.540781] arch_trigger_cpumask_backtrace+0x14/0x20 [ 973.545965] watchdog+0xb51/0x1060 [ 973.549500] ? hungtask_pm_notify+0xb0/0xb0 [ 973.553839] ? __kthread_parkme+0xce/0x1a0 [ 973.558063] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 973.563146] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 973.568233] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 973.572804] ? trace_hardirqs_on+0xbd/0x310 [ 973.577123] ? kasan_check_read+0x11/0x20 [ 973.581250] ? __kthread_parkme+0xce/0x1a0 [ 973.585471] ? trace_hardirqs_off_caller+0x310/0x310 [ 973.590556] ? preempt_schedule+0x4d/0x60 [ 973.594723] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 973.599808] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 973.605328] ? __kthread_parkme+0xfb/0x1a0 [ 973.609546] ? hungtask_pm_notify+0xb0/0xb0 [ 973.613852] kthread+0x35a/0x440 [ 973.617199] ? kthread_stop+0x900/0x900 [ 973.621155] ret_from_fork+0x3a/0x50 [ 973.624973] Sending NMI from CPU 0 to CPUs 1: [ 973.631520] NMI backtrace for cpu 1 [ 973.631524] CPU: 1 PID: 6584 Comm: syz-executor0 Not tainted 4.20.0-rc6+ #151 [ 973.631536] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.202 msecs [ 973.631540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 973.631547] RIP: 0010:__lock_acquire+0x9fc/0x4c20 [ 973.631556] Code: 48 33 0c 25 28 00 00 00 0f 85 3e 2b 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 b8 00 00 00 00 00 fc ff df 4c 89 ea <48> c1 ea 03 80 3c 02 00 0f 85 aa 2c 00 00 49 81 7d 00 a0 52 54 8a [ 973.631559] RSP: 0018:ffff8881bc7c6400 EFLAGS: 00000002 [ 973.631564] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000002 [ 973.631568] RDX: ffffffff8959bf40 RSI: 0000000000000000 RDI: ffffffff8959bf40 [ 973.631571] RBP: ffff8881bc7c6790 R08: 0000000000000000 R09: 0000000000000000 [ 973.631575] R10: 0000000000000001 R11: ffff8881bc4be640 R12: ffff8881bc4be640 [ 973.631578] R13: ffffffff8959bf40 R14: 0000000000000000 R15: 0000000000000000 [ 973.631582] FS: 00007fedfae7c700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000 [ 973.631585] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 973.631589] CR2: ffffffffff600400 CR3: 00000001bff64000 CR4: 00000000001406e0 [ 973.631592] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 973.631596] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 973.631598] Call Trace: [ 973.631600] ? print_usage_bug+0xc0/0xc0 [ 973.631603] ? mark_held_locks+0x130/0x130 [ 973.631605] ? print_usage_bug+0xc0/0xc0 [ 973.631607] ? print_usage_bug+0xc0/0xc0 [ 973.631610] ? trace_hardirqs_off_caller+0x310/0x310 [ 973.631613] ? compat_start_thread+0x80/0x80 [ 973.631615] ? print_usage_bug+0xc0/0xc0 [ 973.631618] ? print_usage_bug+0xc0/0xc0 [ 973.631620] ? print_usage_bug+0xc0/0xc0 [ 973.631622] ? print_usage_bug+0xc0/0xc0 [ 973.631625] ? mark_held_locks+0xc7/0x130 [ 973.631627] ? mark_held_locks+0xc7/0x130 [ 973.631630] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 973.631632] ? zap_class+0x640/0x640 [ 973.631634] ? retint_kernel+0x2d/0x2d [ 973.631637] ? trace_hardirqs_on_caller+0xc0/0x310 [ 973.631639] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 973.631642] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 973.631645] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 973.631647] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 973.631650] ? find_held_lock+0x36/0x1c0 [ 973.631652] lock_acquire+0x1ed/0x520 [ 973.631654] ? tipc_sk_lookup+0x2f7/0xff0 [ 973.631657] ? check_preemption_disabled+0x48/0x280 [ 973.631659] ? lock_release+0xa00/0xa00 [ 973.631662] ? kasan_check_read+0x11/0x20 [ 973.631665] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 973.631667] ? rcu_softirq_qs+0x20/0x20 [ 973.631669] tipc_sk_lookup+0x33a/0xff0 [ 973.631672] ? tipc_sk_lookup+0x2f7/0xff0 [ 973.631674] ? tipc_connect+0x820/0x820 [ 973.631676] ? validate_nla+0x29a/0x1650 [ 973.631678] ? nla_memcmp+0x90/0x90 [ 973.631681] ? zap_class+0x640/0x640 [ 973.631683] ? retint_kernel+0x2d/0x2d [ 973.631686] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 973.631688] ? __nla_parse+0x12c/0x3e0 [ 973.631690] ? nla_parse+0x46/0x60 [ 973.631693] tipc_nl_publ_dump+0x22d/0xf93 [ 973.631695] ? tipc_nl_sk_dump+0x30/0x30 [ 973.631697] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 973.631700] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 973.631702] ? retint_kernel+0x2d/0x2d [ 973.631705] ? trace_hardirqs_on_caller+0xc0/0x310 [ 973.631708] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 973.631710] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 973.631729] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 973.631731] ? retint_kernel+0x1b/0x2d [ 973.631734] ? trace_hardirqs_on+0x310/0x310 [ 973.631736] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 973.631739] __tipc_nl_compat_dumpit.isra.11+0x25d/0xb60 [ 973.631741] ? __alloc_skb+0x4c6/0x770 [ 973.631744] ? __tipc_add_link_prop.isra.9+0x2d0/0x2d0 [ 973.631747] ? skb_put+0x17b/0x1e0 [ 973.631749] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 973.631752] ? skb_put+0x17b/0x1e0 [ 973.631754] ? nla_put+0x117/0x150 [ 973.631757] tipc_nl_compat_sk_dump+0x88e/0xc50 [ 973.631760] ? __tipc_nl_compat_dumpit.isra.11+0xb60/0xb60 [ 973.631768] ? rcu_softirq_qs+0x20/0x20 [ 973.631770] ? zap_class+0x640/0x640 [ 973.631773] ? rhashtable_walk_next+0x2a9/0x6c0 [ 973.631791] ? tipc_nl_sk_dump+0x30/0x30 [ 973.631793] ? tipc_tlv_sprintf+0x2e0/0x2e0 [ 973.631796] ? rhashtable_walk_stop+0x1ca/0x450 [ 973.631798] ? release_sock+0x1ec/0x2c0 [ 973.631801] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 973.631804] ? __tipc_nl_compat_dumpit.isra.11+0xb60/0xb60 [ 973.631807] __tipc_nl_compat_dumpit.isra.11+0x389/0xb60 [ 973.631809] ? __alloc_skb+0x4c6/0x770 [ 973.631812] ? __tipc_add_link_prop.isra.9+0x2d0/0x2d0 [ 973.631814] ? lock_release+0xa00/0xa00 [ 973.631833] ? perf_trace_sched_process_exec+0x860/0x860 [ 973.631836] ? check_preemption_disabled+0x48/0x280 [ 973.631838] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 973.631841] ? skb_put+0x17b/0x1e0 [ 973.631859] tipc_nl_compat_dumpit+0x1f4/0x440 [ 973.631861] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 973.631864] tipc_nl_compat_recv+0x12b3/0x19a0 [ 973.631866] ? tipc_nl_compat_doit+0x650/0x650 [ 973.631869] ? tipc_dump_start+0x90/0x90 [ 973.631872] ? __tipc_nl_compat_dumpit.isra.11+0xb60/0xb60 [ 973.631876] ? find_held_lock+0x36/0x1c0 [ 973.631878] genl_family_rcv_msg+0x8a7/0x11a0 [ 973.631881] ? genl_unregister_family+0x8a0/0x8a0 [ 973.631883] ? lock_downgrade+0x900/0x900 [ 973.631886] ? check_preemption_disabled+0x48/0x280 [ 973.631889] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 973.631891] ? kasan_check_read+0x11/0x20 [ 973.631894] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 973.631896] ? rcu_softirq_qs+0x20/0x20 [ 973.631899] genl_rcv_msg+0xc6/0x168 [ 973.631901] netlink_rcv_skb+0x172/0x440 [ 973.631904] ? genl_family_rcv_msg+0x11a0/0x11a0 [ 973.631906] ? netlink_ack+0xb80/0xb80 [ 973.631908] ? down_read+0x8d/0x120 [ 973.631910] genl_rcv+0x28/0x40 [ 973.631913] netlink_unicast+0x5a5/0x760 [ 973.631915] ? netlink_attachskb+0x9a0/0x9a0 [ 973.631918] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 973.631920] netlink_sendmsg+0xa18/0xfc0 [ 973.631923] ? netlink_unicast+0x760/0x760 [ 973.631926] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 973.631928] ? security_socket_sendmsg+0x94/0xc0 [ 973.631931] ? netlink_unicast+0x760/0x760 [ 973.631933] sock_sendmsg+0xd5/0x120 [ 973.631935] ___sys_sendmsg+0x7fd/0x930 [ 973.631938] ? copy_msghdr_from_user+0x580/0x580 [ 973.631941] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 973.631943] ? rcu_pm_notify+0xc0/0xc0 [ 973.631945] ? __fget_light+0x2e9/0x430 [ 973.631947] ? fget_raw+0x20/0x20 [ 973.631950] ? __might_fault+0x12b/0x1e0 [ 973.631952] ? lock_downgrade+0x900/0x900 [ 973.631954] ? lock_release+0xa00/0xa00 [ 973.631957] ? perf_trace_sched_process_exec+0x860/0x860 [ 973.631960] ? posix_ktime_get_ts+0x15/0x20 [ 973.631962] ? trace_hardirqs_off_caller+0x310/0x310 [ 973.631965] ? trace_hardirqs_on+0xbd/0x310 [ 973.631967] ? kasan_check_read+0x11/0x20 [ 973.631970] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 973.631972] ? sockfd_lookup_light+0xc5/0x160 [ 973.631975] __sys_sendmsg+0x11d/0x280 [ 973.631977] ? __ia32_sys_shutdown+0x80/0x80 [ 973.631980] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 973.631982] ? put_timespec64+0x10f/0x1b0 [ 973.631985] ? do_syscall_64+0x9a/0x820 [ 973.631987] ? do_syscall_64+0x9a/0x820 [ 973.631990] ? trace_hardirqs_off_caller+0x310/0x310 [ 973.631992] __x64_sys_sendmsg+0x78/0xb0 [ 973.631994] do_syscall_64+0x1b9/0x820 [ 973.631997] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 973.632000] ? syscall_return_slowpath+0x5e0/0x5e0 [ 973.632002] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 973.632005] ? trace_hardirqs_on_caller+0x310/0x310 [ 973.632008] ? prepare_exit_to_usermode+0x291/0x3b0 [ 973.632010] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 973.632013] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 973.632015] RIP: 0033:0x457659 [ 973.632023] Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 973.632026] RSP: 002b:00007fedfae7bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 973.632032] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457659 [ 973.632035] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000005 [ 973.632039] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 973.632042] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fedfae7c6d4 [ 973.632046] R13: 00000000004c4171 R14: 00000000004d7058 R15: 00000000ffffffff [ 973.635951] Kernel panic - not syncing: hung_task: blocked tasks [ 974.449267] CPU: 0 PID: 1019 Comm: khungtaskd Not tainted 4.20.0-rc6+ #151 [ 974.456270] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 974.465613] Call Trace: [ 974.468226] dump_stack+0x244/0x39d [ 974.471886] ? dump_stack_print_info.cold.1+0x20/0x20 [ 974.477209] panic+0x2ad/0x55c [ 974.480402] ? add_taint.cold.5+0x16/0x16 [ 974.484553] ? nmi_trigger_cpumask_backtrace+0x1c8/0x22a [ 974.490032] ? nmi_trigger_cpumask_backtrace+0x1f9/0x22a [ 974.495494] ? nmi_trigger_cpumask_backtrace+0x1d1/0x22a [ 974.500984] ? nmi_trigger_cpumask_backtrace+0x1c8/0x22a [ 974.506457] watchdog+0xb62/0x1060 [ 974.510054] ? hungtask_pm_notify+0xb0/0xb0 [ 974.514395] ? __kthread_parkme+0xce/0x1a0 [ 974.518654] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 974.523807] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 974.528912] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 974.533496] ? trace_hardirqs_on+0xbd/0x310 [ 974.537820] ? kasan_check_read+0x11/0x20 [ 974.541989] ? __kthread_parkme+0xce/0x1a0 [ 974.546222] ? trace_hardirqs_off_caller+0x310/0x310 [ 974.551332] ? preempt_schedule+0x4d/0x60 [ 974.555496] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 974.560605] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 974.566151] ? __kthread_parkme+0xfb/0x1a0 [ 974.570406] ? hungtask_pm_notify+0xb0/0xb0 [ 974.574760] kthread+0x35a/0x440 [ 974.578134] ? kthread_stop+0x900/0x900 [ 974.582135] ret_from_fork+0x3a/0x50 [ 974.587061] Kernel Offset: disabled [ 974.590687] Rebooting in 86400 seconds..