[ 38.920223] audit: type=1800 audit(1568142439.979:32): pid=7423 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 39.534211] audit: type=1800 audit(1568142440.699:33): pid=7423 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.171' (ECDSA) to the list of known hosts. syzkaller login: [ 206.801784] kauditd_printk_skb: 2 callbacks suppressed [ 206.801798] audit: type=1400 audit(1568142607.969:36): avc: denied { map } for pid=7611 comm="syz-executor459" path="/root/syz-executor459051835" 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 [ 206.822569] IPVS: ftp: loaded support on port[0] = 21 [ 206.894762] chnl_net:caif_netlink_parms(): no params data found [ 206.926992] bridge0: port 1(bridge_slave_0) entered blocking state [ 206.934662] bridge0: port 1(bridge_slave_0) entered disabled state [ 206.942014] device bridge_slave_0 entered promiscuous mode [ 206.949778] bridge0: port 2(bridge_slave_1) entered blocking state [ 206.956188] bridge0: port 2(bridge_slave_1) entered disabled state [ 206.963272] device bridge_slave_1 entered promiscuous mode [ 206.979466] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 206.988297] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 207.005230] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 207.013011] team0: Port device team_slave_0 added [ 207.019173] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 207.026405] team0: Port device team_slave_1 added [ 207.031797] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 207.039109] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 207.111208] device hsr_slave_0 entered promiscuous mode [ 207.169411] device hsr_slave_1 entered promiscuous mode [ 207.209621] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 207.216581] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 207.230425] bridge0: port 2(bridge_slave_1) entered blocking state [ 207.236998] bridge0: port 2(bridge_slave_1) entered forwarding state [ 207.244056] bridge0: port 1(bridge_slave_0) entered blocking state [ 207.250458] bridge0: port 1(bridge_slave_0) entered forwarding state [ 207.280990] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 207.287112] 8021q: adding VLAN 0 to HW filter on device bond0 [ 207.295892] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 207.305561] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 207.325204] bridge0: port 1(bridge_slave_0) entered disabled state [ 207.332621] bridge0: port 2(bridge_slave_1) entered disabled state [ 207.341355] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 207.351542] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 207.357623] 8021q: adding VLAN 0 to HW filter on device team0 [ 207.367145] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 207.374863] bridge0: port 1(bridge_slave_0) entered blocking state [ 207.381281] bridge0: port 1(bridge_slave_0) entered forwarding state [ 207.391085] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 207.398649] bridge0: port 2(bridge_slave_1) entered blocking state [ 207.405045] bridge0: port 2(bridge_slave_1) entered forwarding state [ 207.426765] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 207.436800] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 207.448184] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 207.456392] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 207.464400] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 207.472712] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 207.480453] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 207.487925] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 207.494866] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 207.507133] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 207.517189] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 312.509063] rcu: INFO: rcu_preempt self-detected stall on CPU [ 312.516743] rcu: 0-...!: (10499 ticks this GP) idle=7b2/0/0x3 softirq=10712/10712 fqs=0 [ 312.525302] rcu: (t=10501 jiffies g=5245 q=94) [ 312.530070] rcu: rcu_preempt kthread starved for 10502 jiffies! g5245 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 312.540644] rcu: RCU grace-period kthread stack dump: [ 312.545845] rcu_preempt I29024 10 2 0x80000000 [ 312.551480] Call Trace: [ 312.554161] __schedule+0x866/0x1dc0 [ 312.557870] ? pci_mmcfg_check_reserved+0x170/0x170 [ 312.562875] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 312.568019] ? lockdep_hardirqs_on+0x415/0x5d0 [ 312.572613] ? trace_hardirqs_on+0x67/0x220 [ 312.576929] schedule+0x92/0x1c0 [ 312.580291] schedule_timeout+0x4db/0xfc0 [ 312.584429] ? usleep_range+0x170/0x170 [ 312.588398] ? trace_hardirqs_on+0x67/0x220 [ 312.592748] ? kasan_check_read+0x11/0x20 [ 312.596919] ? __next_timer_interrupt+0x1a0/0x1a0 [ 312.601785] ? prepare_to_swait_exclusive+0x120/0x120 [ 312.606993] rcu_gp_kthread+0xd5c/0x2190 [ 312.611057] ? rcu_blocking_is_gp+0x90/0x90 [ 312.615364] ? trace_hardirqs_on+0x67/0x220 [ 312.619675] ? kasan_check_read+0x11/0x20 [ 312.623816] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 312.628943] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 312.634519] ? __kthread_parkme+0xfb/0x1b0 [ 312.638748] kthread+0x354/0x420 [ 312.642114] ? rcu_blocking_is_gp+0x90/0x90 [ 312.646433] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 312.651960] ret_from_fork+0x24/0x30 [ 312.655693] NMI backtrace for cpu 0 [ 312.659311] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.72 #0 [ 312.665439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 312.674873] Call Trace: [ 312.677445] [ 312.679616] dump_stack+0x172/0x1f0 [ 312.683245] nmi_cpu_backtrace.cold+0x63/0xa4 [ 312.687792] ? lapic_can_unplug_cpu.cold+0x45/0x45 [ 312.692713] nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 [ 312.697985] arch_trigger_cpumask_backtrace+0x14/0x20 [ 312.703174] rcu_dump_cpu_stacks+0x189/0x1d5 [ 312.707609] ? wake_up_process+0x10/0x20 [ 312.711662] rcu_check_callbacks.cold+0x5e3/0xd90 [ 312.716494] ? trace_hardirqs_off+0x62/0x220 [ 312.720935] update_process_times+0x32/0x80 [ 312.725289] tick_sched_handle+0xa2/0x190 [ 312.729426] tick_sched_timer+0x47/0x130 [ 312.733476] __hrtimer_run_queues+0x33b/0xdc0 [ 312.737960] ? tick_sched_do_timer+0x1b0/0x1b0 [ 312.742533] ? hrtimer_fixup_activate+0x30/0x30 [ 312.747190] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 312.752204] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 312.757563] hrtimer_interrupt+0x314/0x770 [ 312.761796] smp_apic_timer_interrupt+0x111/0x550 [ 312.766804] apic_timer_interrupt+0xf/0x20 [ 312.771102] RIP: 0010:__list_del_entry_valid+0x98/0xf5 [ 312.776379] Code: 0f 84 e2 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 75 53 49 8b 14 24 4c 39 f2 0f 85 99 00 00 00 <49> 8d 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 [ 312.795371] RSP: 0018:ffff8880ae806fa0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 312.803087] RAX: dffffc0000000000 RBX: ffff8880899a94f8 RCX: ffffffff858e78e9 [ 312.810350] RDX: ffff8880899a94f8 RSI: ffffffff858e7d9b RDI: ffff8880899a9500 [ 312.817604] RBP: ffff8880ae806fb8 R08: ffffffff88679ec0 R09: 0000000000000007 [ 312.824875] R10: ffffffff8867a858 R11: 000000005b7027c1 R12: ffff8880899a9590 [ 312.832162] R13: ffff8880899a9590 R14: ffff8880899a94f8 R15: 0000000000000000 [ 312.839461] ? apic_timer_interrupt+0xa/0x20 [ 312.843945] ? hhf_dequeue+0xb9/0xa00 [ 312.847733] ? hhf_dequeue+0x56b/0xa00 [ 312.851612] hhf_dequeue+0x5aa/0xa00 [ 312.855372] __qdisc_run+0x1e7/0x1960 [ 312.859218] __dev_queue_xmit+0x165c/0x2fe0 [ 312.863534] ? netdev_pick_tx+0x300/0x300 [ 312.867699] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 312.873336] ? br_nf_post_routing+0x780/0x12f0 [ 312.877952] ? br_forward_finish+0x235/0x400 [ 312.882373] ? find_held_lock+0x35/0x130 [ 312.886425] ? br_forward_finish+0x235/0x400 [ 312.891263] dev_queue_xmit+0x18/0x20 [ 312.895053] ? dev_queue_xmit+0x18/0x20 [ 312.899016] br_dev_queue_push_xmit+0x405/0x5d0 [ 312.903676] ? kasan_check_read+0x11/0x20 [ 312.907826] br_forward_finish+0xfa/0x400 [ 312.911964] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 312.916796] ? br_fdb_add.cold+0x8a/0x8a [ 312.920848] ? kasan_check_read+0x11/0x20 [ 312.924986] __br_forward+0x647/0xb30 [ 312.928775] ? br_forward_finish+0x400/0x400 [ 312.933181] ? br_dev_queue_push_xmit+0x5d0/0x5d0 [ 312.938016] deliver_clone+0x61/0xc0 [ 312.941729] br_flood+0x4da/0x710 [ 312.945180] br_dev_xmit+0xeeb/0x1490 [ 312.948980] ? br_poll_controller+0x10/0x10 [ 312.953307] ? __lock_is_held+0xb6/0x140 [ 312.957363] dev_hard_start_xmit+0x1a5/0x980 [ 312.961763] ? check_preemption_disabled+0x48/0x290 [ 312.966869] __dev_queue_xmit+0x2704/0x2fe0 [ 312.971193] ? mark_held_locks+0x100/0x100 [ 312.975419] ? netdev_pick_tx+0x300/0x300 [ 312.979638] ? ip6_finish_output+0x574/0xbe0 [ 312.984035] ? find_held_lock+0x35/0x130 [ 312.988093] ? ip6_finish_output+0x574/0xbe0 [ 312.992494] ? mark_held_locks+0xb1/0x100 [ 312.996634] ? ip6_finish_output2+0x1784/0x2550 [ 313.001289] ? ip6_finish_output+0x574/0xbe0 [ 313.005858] ? ip6_finish_output2+0x1784/0x2550 [ 313.010519] dev_queue_xmit+0x18/0x20 [ 313.014304] ? dev_queue_xmit+0x18/0x20 [ 313.018269] ip6_finish_output2+0x12fd/0x2550 [ 313.022791] ? ip6_mtu+0x2e6/0x460 [ 313.026336] ? ip6_forward_finish+0x4d0/0x4d0 [ 313.030819] ? lock_downgrade+0x810/0x810 [ 313.034955] ? kasan_check_read+0x11/0x20 [ 313.039097] ip6_finish_output+0x574/0xbe0 [ 313.043317] ? ip6_finish_output+0x574/0xbe0 [ 313.047716] ip6_output+0x235/0x7c0 [ 313.051333] ? ip6_finish_output+0xbe0/0xbe0 [ 313.055733] ? ip6_fragment+0x3770/0x3770 [ 313.059870] ? icmp6_dst_alloc+0x432/0x660 [ 313.064173] mld_sendpack+0x9d3/0xeb0 [ 313.068007] ? nf_hook.constprop.0+0x560/0x560 [ 313.072593] ? mld_ifc_timer_expire+0x437/0x8a0 [ 313.077314] ? __local_bh_enable_ip+0x15a/0x270 [ 313.081977] mld_ifc_timer_expire+0x449/0x8a0 [ 313.086469] call_timer_fn+0x18d/0x720 [ 313.090344] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 313.094999] ? process_timeout+0x40/0x40 [ 313.099062] ? run_timer_softirq+0x647/0x1700 [ 313.103548] ? trace_hardirqs_on+0x67/0x220 [ 313.107857] ? kasan_check_read+0x11/0x20 [ 313.111994] ? mld_dad_timer_expire+0x1c0/0x1c0 [ 313.116655] run_timer_softirq+0x652/0x1700 [ 313.120968] ? add_timer+0xbe0/0xbe0 [ 313.124712] ? kvm_clock_read+0x18/0x30 [ 313.128678] ? check_preemption_disabled+0x48/0x290 [ 313.133724] ? sched_clock+0x2e/0x50 [ 313.137457] __do_softirq+0x25c/0x921 [ 313.141246] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 313.146768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 313.152301] irq_exit+0x180/0x1d0 [ 313.155741] smp_apic_timer_interrupt+0x13b/0x550 [ 313.160573] apic_timer_interrupt+0xf/0x20 [ 313.164788] [ 313.167012] RIP: 0010:native_safe_halt+0xe/0x10 [ 313.171669] Code: ff ff 48 89 df e8 72 12 ae fa eb 82 e9 07 00 00 00 0f 00 2d 94 03 54 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 84 03 54 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 be f4 65 fa e8 69 [ 313.190561] RSP: 0018:ffffffff88607ca8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 313.198259] RAX: 1ffffffff10e48c4 RBX: ffffffff88679ec0 RCX: 0000000000000000 [ 313.205527] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff8867a73c [ 313.212794] RBP: ffffffff88607cd8 R08: ffffffff88679ec0 R09: 0000000000000000 [ 313.220052] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 313.227331] R13: ffffffff88724610 R14: 0000000000000000 R15: 0000000000000000 [ 313.234621] ? default_idle+0x4e/0x320 [ 313.238514] arch_cpu_idle+0xa/0x10 [ 313.242139] default_idle_call+0x36/0x90 [ 313.246244] do_idle+0x377/0x560 [ 313.249612] ? arch_cpu_idle_exit+0x80/0x80 [ 313.253928] ? check_preemption_disabled+0x48/0x290 [ 313.259213] cpu_startup_entry+0xc8/0xe0 [ 313.263347] ? cpu_in_idle+0x20/0x20 [ 313.267067] rest_init+0x219/0x222 [ 313.270637] start_kernel+0x88c/0x8c5 [ 313.274444] ? mem_encrypt_init+0xb/0xb [ 313.278417] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 313.283943] ? x86_family+0x41/0x50 [ 313.287557] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 313.293084] x86_64_start_reservations+0x29/0x2b [ 313.297825] x86_64_start_kernel+0x77/0x7b [ 313.302067] secondary_startup_64+0xa4/0xb0