[ 42.304009][ T25] audit: type=1800 audit(1575317919.870:30): pid=7930 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.125' (ECDSA) to the list of known hosts. 2019/12/02 20:18:47 fuzzer started 2019/12/02 20:18:48 dialing manager at 10.128.0.26:38907 2019/12/02 20:18:48 checking machine... 2019/12/02 20:18:48 checking revisions... 2019/12/02 20:18:48 testing simple program... syzkaller login: [ 51.538341][ T8095] IPVS: ftp: loaded support on port[0] = 21 2019/12/02 20:18:49 building call list... [ 51.906274][ T7] tipc: TX() has been purged, node left! [ 52.286462][ T8093] can: request_module (can-proto-0) failed. executing program [ 54.949096][ T8093] can: request_module (can-proto-0) failed. [ 54.960679][ T8093] can: request_module (can-proto-0) failed. 2019/12/02 20:18:58 syscalls: 2697 2019/12/02 20:18:58 code coverage: enabled 2019/12/02 20:18:58 comparison tracing: enabled 2019/12/02 20:18:58 extra coverage: extra coverage is not supported by the kernel 2019/12/02 20:18:58 setuid sandbox: enabled 2019/12/02 20:18:58 namespace sandbox: enabled 2019/12/02 20:18:58 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/02 20:18:58 fault injection: enabled 2019/12/02 20:18:58 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/02 20:18:58 net packet injection: enabled 2019/12/02 20:18:58 net device setup: enabled 2019/12/02 20:18:58 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/02 20:18:58 devlink PCI setup: PCI device 0000:00:10.0 is not available 20:18:59 executing program 0: r0 = syz_open_dev$usbfs(&(0x7f0000000180)='/dev/bus/usb/00#/00#\x00', 0x200, 0x1) ioctl$USBDEVFS_CONTROL(r0, 0xc0185500, &(0x7f0000000000)={0x80, 0x6, 0x0, 0x0, 0x0, 0x0, 0x0}) [ 61.732275][ T8141] IPVS: ftp: loaded support on port[0] = 21 20:18:59 executing program 1: perf_event_open(&(0x7f0000000000)={0x2, 0x70, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0x0, 0xffffffffffffffff, 0x0) clone(0x0, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) prctl$PR_TASK_PERF_EVENTS_DISABLE(0x1f) [ 61.845061][ T8141] chnl_net:caif_netlink_parms(): no params data found [ 61.918258][ T8141] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.925948][ T8141] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.934114][ T8141] device bridge_slave_0 entered promiscuous mode [ 61.944943][ T8141] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.952297][ T8141] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.961503][ T8141] device bridge_slave_1 entered promiscuous mode [ 61.981238][ T8144] IPVS: ftp: loaded support on port[0] = 21 [ 61.990710][ T8141] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.003102][ T8141] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.032677][ T8141] team0: Port device team_slave_0 added [ 62.046087][ T8141] team0: Port device team_slave_1 added 20:18:59 executing program 2: r0 = socket$netlink(0x10, 0x3, 0x9) bind$netlink(r0, &(0x7f0000000040)={0x10, 0x0, 0x0, 0x2ffffffff}, 0xc) [ 62.139198][ T8141] device hsr_slave_0 entered promiscuous mode [ 62.176507][ T8141] device hsr_slave_1 entered promiscuous mode 20:18:59 executing program 3: mremap(&(0x7f0000182000/0x3000)=nil, 0x7ffffffff000, 0x7ffffffff000, 0x0, &(0x7f00000be000/0x2000)=nil) [ 62.267862][ T8141] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 62.329355][ T8141] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 62.419774][ T8141] netdevsim netdevsim0 netdevsim2: renamed from eth2 20:19:00 executing program 4: unshare(0x8000400) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = dup2(r1, r0) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) r3 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0) bind$bt_sco(r3, &(0x7f0000000040), 0x8) listen(r3, 0x0) [ 62.529955][ T8141] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 62.635201][ T8146] IPVS: ftp: loaded support on port[0] = 21 [ 62.638536][ T8141] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.648258][ T8141] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.655934][ T8141] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.663051][ T8141] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.706886][ T8144] chnl_net:caif_netlink_parms(): no params data found [ 62.720939][ T8148] IPVS: ftp: loaded support on port[0] = 21 [ 62.746240][ T8141] 8021q: adding VLAN 0 to HW filter on device bond0 20:19:00 executing program 5: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) ioctl$KVM_CHECK_EXTENSION(r0, 0xae03, 0x99) [ 62.785473][ T8150] IPVS: ftp: loaded support on port[0] = 21 [ 62.826687][ T8101] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.841608][ T8101] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.851117][ T8101] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.861413][ T8101] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 62.878880][ T8141] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.912744][ T8144] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.921759][ T8144] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.929665][ T8144] device bridge_slave_0 entered promiscuous mode [ 62.948522][ T8144] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.957167][ T8144] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.964853][ T8144] device bridge_slave_1 entered promiscuous mode [ 62.983813][ T8151] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.992443][ T8151] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.001867][ T8151] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.008934][ T8151] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.046044][ T8144] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.057106][ T8154] IPVS: ftp: loaded support on port[0] = 21 [ 63.065482][ T8144] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.089014][ T2749] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.098890][ T2749] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.107262][ T2749] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.114291][ T2749] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.122913][ T2749] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.131810][ T2749] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.147427][ T2749] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 63.155922][ T2749] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.164730][ T2749] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 63.173289][ T2749] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.181968][ T2749] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 63.190240][ T2749] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.198319][ T2749] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 63.207681][ T2749] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 63.229986][ T8144] team0: Port device team_slave_0 added [ 63.237458][ T8144] team0: Port device team_slave_1 added [ 63.243761][ T8141] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.255228][ T8151] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.303930][ T8141] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 63.334733][ T8101] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 63.343030][ T8101] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 63.350871][ T8146] chnl_net:caif_netlink_parms(): no params data found [ 63.389841][ T8146] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.397073][ T8146] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.404829][ T8146] device bridge_slave_0 entered promiscuous mode [ 63.429774][ T8148] chnl_net:caif_netlink_parms(): no params data found [ 63.448760][ T8146] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.455826][ T8146] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.464993][ T8146] device bridge_slave_1 entered promiscuous mode [ 63.528864][ T8144] device hsr_slave_0 entered promiscuous mode [ 63.566629][ T8144] device hsr_slave_1 entered promiscuous mode [ 63.606392][ T8144] debugfs: Directory 'hsr0' with parent '/' already present! [ 63.625621][ T8150] chnl_net:caif_netlink_parms(): no params data found [ 63.662521][ T8146] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.702886][ T8146] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.718265][ T8148] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.725495][ T8148] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.739408][ T8148] device bridge_slave_0 entered promiscuous mode [ 63.748500][ T8148] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.755630][ T8148] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.764313][ T8148] device bridge_slave_1 entered promiscuous mode [ 63.785859][ T8148] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.798953][ T8148] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.849191][ T8144] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 168.736135][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 168.742921][ C1] rcu: 1-....: (10500 ticks this GP) idle=b6a/1/0x4000000000000002 softirq=11386/11386 fqs=2903 [ 168.753661][ C1] (t=10501 jiffies g=6117 q=99) [ 168.758624][ C1] rcu: rcu_preempt kthread starved for 4695 jiffies! g6117 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 168.770078][ C1] rcu: RCU grace-period kthread stack dump: [ 168.775969][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 168.783861][ C1] Call Trace: [ 168.787153][ C1] __schedule+0x9a0/0xcc0 [ 168.791484][ C1] schedule+0x181/0x210 [ 168.795718][ C1] schedule_timeout+0x14f/0x240 [ 168.800555][ C1] ? run_local_timers+0x120/0x120 [ 168.805581][ C1] rcu_gp_kthread+0xed8/0x1770 [ 168.810433][ C1] kthread+0x332/0x350 [ 168.814512][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 168.819610][ C1] ? kthread_blkcg+0xe0/0xe0 [ 168.824188][ C1] ret_from_fork+0x24/0x30 [ 168.828980][ C1] NMI backtrace for cpu 1 [ 168.833309][ C1] CPU: 1 PID: 8160 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 [ 168.841626][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 168.851684][ C1] Call Trace: [ 168.855000][ C1] [ 168.857845][ C1] dump_stack+0x1fb/0x318 [ 168.862172][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 168.867007][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 168.873252][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 168.879314][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 168.887383][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 168.893352][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 168.898456][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 168.903758][ C1] ? trace_hardirqs_off+0x74/0x80 [ 168.908774][ C1] update_process_times+0x12d/0x180 [ 168.913968][ C1] tick_sched_timer+0x263/0x420 [ 168.918803][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 168.924357][ C1] __hrtimer_run_queues+0x403/0x840 [ 168.929588][ C1] hrtimer_interrupt+0x38c/0xda0 [ 168.934568][ C1] ? debug_smp_processor_id+0x9/0x20 [ 168.939858][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 168.945533][ C1] apic_timer_interrupt+0xf/0x20 [ 168.950554][ C1] [ 168.953485][ C1] RIP: 0010:free_thread_stack+0x18b/0x590 [ 168.959220][ C1] Code: ff ff e8 28 04 00 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 09 a4 69 00 49 8b 1c 24 48 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <74> 08 48 89 df e8 eb a3 69 00 48 8b 1b e9 82 ff ff ff e8 de 2c 2e [ 168.978814][ C1] RSP: 0018:ffffc900029c7780 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 168.987212][ C1] RAX: 1ffff11012cceee1 RBX: ffff888096677708 RCX: ffff88809649e480 [ 168.995170][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00028facc0 [ 169.003843][ C1] RBP: ffffc900029c77b8 R08: 000000000003a768 R09: fffffbfff120248a [ 169.011819][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff888096677520 [ 169.020063][ C1] R13: dffffc0000000000 R14: 1ffff11012cceea4 R15: ffff888098333868 [ 169.028046][ C1] put_task_stack+0xa3/0x130 [ 169.032741][ C1] finish_task_switch+0x3f1/0x550 [ 169.037770][ C1] __schedule+0x9a8/0xcc0 [ 169.042110][ C1] ? ___preempt_schedule+0x16/0x18 [ 169.047209][ C1] preempt_schedule+0xdb/0x120 [ 169.052722][ C1] ? __d_alloc+0x2d/0x6e0 [ 169.057085][ C1] ___preempt_schedule+0x16/0x18 [ 169.062218][ C1] memcg_kmem_put_cache+0x164/0x170 [ 169.067424][ C1] ? __d_alloc+0x2d/0x6e0 [ 169.071761][ C1] kmem_cache_alloc+0x20b/0x2e0 [ 169.076598][ C1] ? __d_alloc+0x2d/0x6e0 [ 169.080915][ C1] __d_alloc+0x2d/0x6e0 [ 169.085062][ C1] d_alloc_parallel+0x7f/0x1430 [ 169.089898][ C1] ? rcu_lock_release+0x21/0x30 [ 169.094820][ C1] ? __d_lookup+0x64f/0x6f0 [ 169.099319][ C1] ? d_lookup+0x2a/0x60 [ 169.103468][ C1] path_openat+0xbf3/0x44a0 [ 169.108000][ C1] do_filp_open+0x192/0x3d0 [ 169.112498][ C1] ? noop_direct_IO+0x20/0x20 [ 169.117261][ C1] do_sys_open+0x29f/0x560 [ 169.121672][ C1] __x64_sys_open+0x87/0x90 [ 169.126172][ C1] do_syscall_64+0xf7/0x1c0 [ 169.131182][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 169.137419][ C1] RIP: 0033:0x4143f0 [ 169.141314][ C1] Code: 05 48 3d 01 f0 ff ff 0f 83 2d 19 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 7d 40 66 00 00 75 14 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 0a fa ff ff [ 169.160999][ C1] RSP: 002b:00007ffc25ae3858 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 169.169395][ C1] RAX: ffffffffffffffda RBX: 00007ffc25ae3884 RCX: 00000000004143f0 [ 169.177359][ C1] RDX: 00007ffc25ae388a RSI: 0000000000080001 RDI: 00000000004c00fb [ 169.185318][ C1] RBP: 00007ffc25ae3880 R08: 0000000000000000 R09: 0000000000000004 [ 169.193340][ C1] R10: 0000000000000075 R11: 0000000000000246 R12: 00000000004c00fb [ 169.201381][ C1] R13: 00007ffc25ae3da0 R14: 0000000000000000 R15: 00007ffc25ae3db0