[ 41.415917][ T25] audit: type=1800 audit(1575363472.066:27): pid=7939 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 41.479050][ T25] audit: type=1800 audit(1575363472.076:28): pid=7939 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 42.035195][ T25] audit: type=1800 audit(1575363472.726:29): pid=7939 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 42.054618][ T25] audit: type=1800 audit(1575363472.736:30): pid=7939 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 '10.128.10.9' (ECDSA) to the list of known hosts. 2019/12/03 08:58:02 fuzzer started 2019/12/03 08:58:04 dialing manager at 10.128.0.26:38907 2019/12/03 08:58:04 syscalls: 2697 2019/12/03 08:58:04 code coverage: enabled 2019/12/03 08:58:04 comparison tracing: enabled 2019/12/03 08:58:04 extra coverage: extra coverage is not supported by the kernel 2019/12/03 08:58:04 setuid sandbox: enabled 2019/12/03 08:58:04 namespace sandbox: enabled 2019/12/03 08:58:04 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 08:58:04 fault injection: enabled 2019/12/03 08:58:04 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 08:58:04 net packet injection: enabled 2019/12/03 08:58:04 net device setup: enabled 2019/12/03 08:58:04 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 08:58:04 devlink PCI setup: PCI device 0000:00:10.0 is not available 08:58:05 executing program 0: mkdir(&(0x7f0000000400)='./file1\x00', 0x0) lsetxattr$system_posix_acl(&(0x7f0000000080)='./file1\x00', &(0x7f0000000140)='system.posix_acl_default\x00', &(0x7f0000000180)=ANY=[@ANYBLOB="020000000100000000000000040000000000000020000000", @ANYRES32, @ANYBLOB="08000000e27790f5f956cd5dcbb7fbded85d09f85e7aec2ae1b09d5cab209b4a8ce60f3e42f6454a33d850c4e060927fb7cae3966b0960f6213e18b42f2b9dfe1971e04dddd75effbc1970e635f2ea713bd3d72829bed50e1fc5ce4871e0c5573f9f06a872590b66191a013685d98d12593b51019422f59663b3eae72506dfba6a8b01da26633acb9c6b00", @ANYRES32=0x0, @ANYBLOB='\x00\x00'], 0x1c, 0x2) mkdir(&(0x7f0000000000)='./file1/file0\x00', 0x0) 08:58:05 executing program 1: r0 = syz_open_dev$cec(&(0x7f00000001c0)='/dev/cec#\x00', 0xffffffffffffffff, 0x2) ioctl$IOC_PR_PREEMPT(r0, 0x40046109, &(0x7f0000000000)={0xd1}) syzkaller login: [ 54.842734][ T8105] IPVS: ftp: loaded support on port[0] = 21 [ 54.962708][ T8105] chnl_net:caif_netlink_parms(): no params data found [ 55.018457][ T8105] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.027238][ T8105] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.036566][ T8105] device bridge_slave_0 entered promiscuous mode [ 55.045025][ T8105] bridge0: port 2(bridge_slave_1) entered blocking state 08:58:05 executing program 2: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) sendmsg(0xffffffffffffffff, &(0x7f0000000180)={0x0, 0xff, &(0x7f0000000080)=[{&(0x7f0000000040)="2f0000001c0005c5ffffff080d0000000200001f01000000190102", 0x1cb}], 0x1}, 0x0) r2 = socket(0x10, 0x80002, 0x0) sendmmsg$alg(r2, &(0x7f0000000140)=[{0x6, 0x0, &(0x7f0000000100), 0x6, &(0x7f0000000100)}], 0x492492492492805, 0x0) [ 55.062173][ T8105] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.071309][ T8105] device bridge_slave_1 entered promiscuous mode [ 55.098565][ T8108] IPVS: ftp: loaded support on port[0] = 21 [ 55.134523][ T8105] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.169857][ T8105] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.230335][ T8105] team0: Port device team_slave_0 added [ 55.248562][ T8105] team0: Port device team_slave_1 added 08:58:06 executing program 3: set_mempolicy(0x3, &(0x7f0000000080)=0x4, 0xee) [ 55.349430][ T8105] device hsr_slave_0 entered promiscuous mode [ 55.376086][ T8105] device hsr_slave_1 entered promiscuous mode [ 55.436802][ T8111] IPVS: ftp: loaded support on port[0] = 21 [ 55.471043][ T8113] IPVS: ftp: loaded support on port[0] = 21 [ 55.513723][ T8108] chnl_net:caif_netlink_parms(): no params data found 08:58:06 executing program 4: keyctl$dh_compute(0x17, &(0x7f00000001c0), &(0x7f0000000200)=""/4096, 0x1000, &(0x7f0000002240)={0x0}) [ 55.557247][ T8105] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 55.629450][ T8105] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 55.680314][ T8105] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 55.778149][ T8105] netdevsim netdevsim0 netdevsim3: renamed from eth3 08:58:06 executing program 5: socketpair$unix(0x1, 0x2, 0x0, &(0x7f00000002c0)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000140)={0x0, 0x0, &(0x7f00000000c0)={0x0}}, 0x0) r1 = socket$inet6(0xa, 0x8000008000080003, 0x5) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000340)={'bridge_slave_0\x00', 0x0}) sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000080)={0x0, 0x4000, &(0x7f00000000c0)={&(0x7f0000000000)=ANY=[@ANYBLOB="2c00000011003586000000030000000007000000", @ANYRES32=r2, @ANYBLOB="00000085000000000c001a000800020000000400"], 0x2c}}, 0x0) r3 = socket(0x10, 0x80002, 0x0) sendmmsg$alg(r3, &(0x7f0000000140), 0x332, 0x0) [ 55.831706][ T8115] IPVS: ftp: loaded support on port[0] = 21 [ 55.838394][ T8105] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.845571][ T8105] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.853394][ T8105] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.860506][ T8105] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.894553][ T8108] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.903227][ T8108] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.911378][ T8108] device bridge_slave_0 entered promiscuous mode [ 55.921957][ T8108] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.929337][ T8108] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.937399][ T8108] device bridge_slave_1 entered promiscuous mode [ 56.008050][ T8119] IPVS: ftp: loaded support on port[0] = 21 [ 56.014238][ T8108] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.028821][ T8111] chnl_net:caif_netlink_parms(): no params data found [ 56.039100][ T2711] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.057876][ T2711] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.091074][ T8108] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.155544][ T8108] team0: Port device team_slave_0 added [ 56.171287][ T8113] chnl_net:caif_netlink_parms(): no params data found [ 56.189806][ T8108] team0: Port device team_slave_1 added [ 56.195586][ T8111] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.202818][ T8111] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.210858][ T8111] device bridge_slave_0 entered promiscuous mode [ 56.239043][ T8111] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.246543][ T8111] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.254277][ T8111] device bridge_slave_1 entered promiscuous mode [ 56.280183][ T8105] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.299390][ T8111] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.310048][ T8111] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.358814][ T8115] chnl_net:caif_netlink_parms(): no params data found [ 56.367826][ T8113] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.374922][ T8113] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.384671][ T8113] device bridge_slave_0 entered promiscuous mode [ 56.428517][ T8108] device hsr_slave_0 entered promiscuous mode [ 56.486231][ T8108] device hsr_slave_1 entered promiscuous mode [ 56.546001][ T8108] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.565323][ T8105] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.575727][ T8111] team0: Port device team_slave_0 added [ 56.589187][ T8113] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.596371][ T8113] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.603839][ T8113] device bridge_slave_1 entered promiscuous mode [ 56.628916][ T3119] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.637305][ T3119] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.646570][ T8111] team0: Port device team_slave_1 added [ 56.693266][ T8108] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 56.759990][ T8113] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.782963][ T8113] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.794115][ T3119] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.802951][ T3119] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.812145][ T3119] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.819277][ T3119] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.828158][ T3119] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.836789][ T3119] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.845026][ T3119] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.852105][ T3119] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.859730][ T3119] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 56.868216][ T3119] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 56.881552][ T8115] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.889834][ T8115] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.897861][ T8115] device bridge_slave_0 entered promiscuous mode [ 56.904808][ T8108] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 56.947673][ T8119] chnl_net:caif_netlink_parms(): no params data found [ 56.974922][ T8115] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.982096][ T8115] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.990143][ T8115] device bridge_slave_1 entered promiscuous mode [ 57.010615][ T8108] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 57.108589][ T8111] device hsr_slave_0 entered promiscuous mode [ 57.146235][ T8111] device hsr_slave_1 entered promiscuous mode [ 57.196042][ T8111] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.228415][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 57.239153][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.248437][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.256922][ T8108] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 57.341051][ T8113] team0: Port device team_slave_0 added [ 57.348550][ T8115] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.358062][ T8119] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.365113][ T8119] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.373374][ T8119] device bridge_slave_0 entered promiscuous mode [ 57.380864][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 57.389742][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.398261][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 57.406679][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.415025][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 57.423398][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.434822][ T8105] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.449686][ T8113] team0: Port device team_slave_1 added [ 57.462667][ T8115] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.472478][ T8119] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.480009][ T8119] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.488007][ T8119] device bridge_slave_1 entered promiscuous mode [ 57.506428][ T8111] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 57.551025][ T8111] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 57.600411][ T8111] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 57.658159][ T8111] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 57.713724][ T8115] team0: Port device team_slave_0 added [ 57.721440][ T8115] team0: Port device team_slave_1 added [ 57.740588][ T8119] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.758852][ T8119] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.784856][ T8119] team0: Port device team_slave_0 added [ 57.828840][ T8113] device hsr_slave_0 entered promiscuous mode [ 57.876222][ T8113] device hsr_slave_1 entered promiscuous mode [ 57.925985][ T8113] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.935686][ T2711] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.943136][ T2711] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.956309][ T8105] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.969975][ T8119] team0: Port device team_slave_1 added [ 58.030321][ T8115] device hsr_slave_0 entered promiscuous mode [ 58.087336][ T8115] device hsr_slave_1 entered promiscuous mode [ 58.115913][ T8115] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.131770][ T8108] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.203124][ T8119] device hsr_slave_0 entered promiscuous mode [ 163.185759][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 163.192516][ C0] rcu: 0-...!: (10499 ticks this GP) idle=586/1/0x4000000000000002 softirq=9918/9918 fqs=5 [ 163.202803][ C0] (t=10501 jiffies g=5877 q=71) [ 163.207728][ C0] rcu: rcu_preempt kthread starved for 10492 jiffies! g5877 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 163.218808][ C0] rcu: RCU grace-period kthread stack dump: [ 163.224684][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 163.232571][ C0] Call Trace: [ 163.235852][ C0] __schedule+0x9a0/0xcc0 [ 163.240181][ C0] schedule+0x181/0x210 [ 163.244325][ C0] schedule_timeout+0x14f/0x240 [ 163.249162][ C0] ? run_local_timers+0x120/0x120 [ 163.254184][ C0] rcu_gp_kthread+0xed8/0x1770 [ 163.258944][ C0] kthread+0x332/0x350 [ 163.262996][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 163.268096][ C0] ? kthread_blkcg+0xe0/0xe0 [ 163.272672][ C0] ret_from_fork+0x24/0x30 [ 163.277090][ C0] NMI backtrace for cpu 0 [ 163.281405][ C0] CPU: 0 PID: 440 Comm: kworker/u4:6 Not tainted 5.4.0-syzkaller #0 [ 163.289367][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 163.299417][ C0] Workqueue: events_unbound fsnotify_connector_destroy_workfn [ 163.306851][ C0] Call Trace: [ 163.310117][ C0] [ 163.312968][ C0] dump_stack+0x1fb/0x318 [ 163.317302][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 163.322135][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 163.328275][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 163.334328][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 163.340296][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 163.346183][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 163.351292][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 163.356482][ C0] ? trace_hardirqs_off+0x74/0x80 [ 163.361499][ C0] update_process_times+0x12d/0x180 [ 163.366686][ C0] tick_sched_timer+0x263/0x420 [ 163.371525][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 163.377055][ C0] __hrtimer_run_queues+0x403/0x840 [ 163.382253][ C0] hrtimer_interrupt+0x38c/0xda0 [ 163.387194][ C0] ? debug_smp_processor_id+0x9/0x20 [ 163.392466][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 163.397993][ C0] apic_timer_interrupt+0xf/0x20 [ 163.402911][ C0] [ 163.405835][ C0] RIP: 0010:mod_memcg_page_state+0x123/0x190 [ 163.411798][ C0] Code: e8 f2 9e 69 00 48 83 3d 12 22 c2 07 00 74 70 e8 e3 27 2e 00 4c 89 ff 57 9d 0f 1f 44 00 00 e8 f4 c2 33 00 eb 43 e8 cd 27 2e 00 3c e8 86 c0 33 00 48 c7 c0 28 96 0a 89 48 c1 e8 03 42 80 3c 20 [ 163.431395][ C0] RSP: 0018:ffffc900026b78d8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 163.439788][ C0] RAX: ffffffff81487433 RBX: 0000000000000000 RCX: ffff8880a873a340 [ 163.447759][ C0] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0002a7a400 [ 163.455744][ C0] RBP: ffffc900026b78f8 R08: 000000000003a768 R09: ffffed1011a9eaef [ 163.463729][ C0] R10: ffffed1011a9eaef R11: 0000000000000000 R12: dffffc0000000000 [ 163.471709][ C0] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff88808d4f5768 [ 163.479694][ C0] ? mod_memcg_page_state+0x123/0x190 [ 163.485077][ C0] ? mod_memcg_page_state+0x123/0x190 [ 163.490436][ C0] free_thread_stack+0x168/0x590 [ 163.495386][ C0] put_task_stack+0xa3/0x130 [ 163.499963][ C0] finish_task_switch+0x3f1/0x550 [ 163.504981][ C0] __schedule+0x9a8/0xcc0 [ 163.509305][ C0] ? ___preempt_schedule+0x16/0x18 [ 163.514404][ C0] preempt_schedule+0xdb/0x120 [ 163.519155][ C0] ___preempt_schedule+0x16/0x18 [ 163.524084][ C0] _raw_spin_unlock_irqrestore+0xcc/0xe0 [ 163.529701][ C0] __call_srcu+0x7ab/0xb00 [ 163.534116][ C0] __synchronize_srcu+0x1cf/0x260 [ 163.539131][ C0] ? rcu_read_lock_any_held+0x1a0/0x1a0 [ 163.544695][ C0] synchronize_srcu+0x2cb/0x2f0 [ 163.549563][ C0] fsnotify_connector_destroy_workfn+0x44/0xb0 [ 163.555825][ C0] process_one_work+0x7ef/0x10d0 [ 163.560771][ C0] worker_thread+0xc01/0x1630 [ 163.565462][ C0] kthread+0x332/0x350 [ 163.569518][ C0] ? rcu_lock_release+0x30/0x30 [ 163.574361][ C0] ? kthread_blkcg+0xe0/0xe0 [ 163.578941][ C0] ret_from_fork+0x24/0x30