[ 42.537762][ T25] audit: type=1800 audit(1575377311.283:25): pid=7999 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 42.556897][ T25] audit: type=1800 audit(1575377311.283:26): pid=7999 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.676849][ T25] audit: type=1800 audit(1575377311.423:27): pid=7999 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.705869][ T25] audit: type=1800 audit(1575377311.443:28): pid=7999 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.203' (ECDSA) to the list of known hosts. 2019/12/03 12:48:42 fuzzer started 2019/12/03 12:48:44 dialing manager at 10.128.0.26:45711 2019/12/03 12:48:44 syscalls: 2689 2019/12/03 12:48:44 code coverage: enabled 2019/12/03 12:48:44 comparison tracing: enabled 2019/12/03 12:48:44 extra coverage: extra coverage is not supported by the kernel 2019/12/03 12:48:44 setuid sandbox: enabled 2019/12/03 12:48:44 namespace sandbox: enabled 2019/12/03 12:48:44 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 12:48:44 fault injection: enabled 2019/12/03 12:48:44 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 12:48:44 net packet injection: enabled 2019/12/03 12:48:44 net device setup: enabled 2019/12/03 12:48:44 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 12:48:44 devlink PCI setup: PCI device 0000:00:10.0 is not available 12:48:45 executing program 0: prctl$PR_SET_PTRACER(0x59616d61, 0xffffffffffffffff) clone(0x100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = gettid() wait4(0x0, 0x0, 0x8000000a, 0x0) vmsplice(0xffffffffffffffff, &(0x7f00000000c0)=[{0x0}, {0x0}, {0x0}, {&(0x7f0000000300)="6653a8990785363940aed12f0000db2f0000", 0x12}], 0x4, 0x0) ptrace$setopts(0x4206, r0, 0x0, 0x0) tkill(r0, 0x3c) ptrace$cont(0x18, r0, 0x0, 0x0) syz_emit_ethernet(0x4, &(0x7f00000000c0)=ANY=[@ANYBLOB="aaaaaaaaaaaaaaaaaaaaaaaa080045000028000000000000907800"/38, @ANYRES32=0x42424242, @ANYRES32=0x41424344, @ANYBLOB='\x00\x00\x00\x00\x00\x00'], 0x0) ptrace$setregs(0xd, r0, 0x0, &(0x7f0000000080)) ptrace$cont(0x9, r0, 0x0, 0x0) 12:48:45 executing program 1: r0 = openat$sequencer2(0xffffffffffffff9c, &(0x7f0000000040)='/dev/sequencer2\x00', 0x1, 0x0) ioctl$TCSETSF(r0, 0xc0046d00, 0x0) syzkaller login: [ 56.593930][ T8164] IPVS: ftp: loaded support on port[0] = 21 [ 56.737668][ T8164] chnl_net:caif_netlink_parms(): no params data found [ 56.770229][ T8167] IPVS: ftp: loaded support on port[0] = 21 [ 56.792841][ T8164] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.801031][ T8164] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.809310][ T8164] device bridge_slave_0 entered promiscuous mode [ 56.830900][ T8164] bridge0: port 2(bridge_slave_1) entered blocking state 12:48:45 executing program 2: socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) getdents64(0xffffffffffffffff, 0xffffffffffffffff, 0xfffffffffffffe70) [ 56.846719][ T8164] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.854337][ T8164] device bridge_slave_1 entered promiscuous mode [ 56.910469][ T8164] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.933983][ T8164] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.996144][ T8164] team0: Port device team_slave_0 added [ 57.012004][ T8167] chnl_net:caif_netlink_parms(): no params data found [ 57.027594][ T8164] team0: Port device team_slave_1 added 12:48:45 executing program 3: r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000000)={0x26, 'aead\x00', 0x0, 0x0, 'aegis128-generic\x00'}, 0x58) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000180)="71e67a15cdf0311cfcf33a52a7d86bd1", 0x10) r1 = accept4$alg(r0, 0x0, 0x0, 0x0) sendmmsg(r1, &(0x7f0000008e80)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0, 0x0, &(0x7f0000002e00)=[{0x10}, {0x10, 0x117}], 0x20}}], 0x2, 0x0) [ 57.108690][ T8164] device hsr_slave_0 entered promiscuous mode [ 57.137258][ T8164] device hsr_slave_1 entered promiscuous mode [ 57.179268][ T8167] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.186740][ T8167] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.207560][ T8167] device bridge_slave_0 entered promiscuous mode [ 57.222033][ T8167] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.241026][ T8170] IPVS: ftp: loaded support on port[0] = 21 [ 57.246785][ T8167] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.255779][ T8167] device bridge_slave_1 entered promiscuous mode [ 57.314779][ T8167] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.348382][ T8167] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.370637][ T8164] netdevsim netdevsim0 netdevsim0: renamed from eth0 12:48:46 executing program 4: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$tipc2(&(0x7f00000000c0)='TIPCv2\x00') sendmsg$TIPC_NL_MEDIA_SET(r2, &(0x7f0000000300)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)={0x14, r3, 0x1, 0x0, 0x0, {0xf}}, 0x14}}, 0x0) [ 57.478809][ T8164] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.528490][ T8164] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.589776][ T8164] netdevsim netdevsim0 netdevsim3: renamed from eth3 12:48:46 executing program 5: bpf$PROG_LOAD(0x5, &(0x7f000000d000)={0xb, 0x3, &(0x7f0000008000)=@framed={{0xffffff85, 0x0, 0x0, 0x0, 0x1c, 0xffffffc5}}, &(0x7f0000000000)='s\x96zka\x00\x00\x00\x00\x00\xf3\x13+\xa9i\xe2\x14\'\xf5\x14\xeeL\xd7\xad\xfc\xc4\xac\xd7\xdb\xcb+h\x02f\x19d\xd8\x90dN\xfa\xb2\xa3z', 0x2, 0x1000, &(0x7f0000014000)=""/4096}, 0x48) [ 57.674586][ T8172] IPVS: ftp: loaded support on port[0] = 21 [ 57.685157][ T8167] team0: Port device team_slave_0 added [ 57.701625][ T8164] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.708834][ T8164] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.709357][ T8164] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.723208][ T8164] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.734963][ T8167] team0: Port device team_slave_1 added [ 57.743702][ T8174] IPVS: ftp: loaded support on port[0] = 21 [ 57.800667][ T8176] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.809748][ T8176] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.878808][ T8167] device hsr_slave_0 entered promiscuous mode [ 57.917110][ T8167] device hsr_slave_1 entered promiscuous mode [ 57.956881][ T8167] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.021196][ T8164] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.040515][ T8170] chnl_net:caif_netlink_parms(): no params data found [ 58.057409][ T8179] IPVS: ftp: loaded support on port[0] = 21 [ 58.084689][ T8164] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.099971][ T8167] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 58.130100][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.138822][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.168199][ T8167] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 58.240167][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 58.249332][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.258464][ T43] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.265521][ T43] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.275265][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.284687][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.293077][ T43] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.300139][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.310720][ T8167] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 58.374286][ T8170] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.381495][ T8170] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.389458][ T8170] device bridge_slave_0 entered promiscuous mode [ 58.428562][ T8172] chnl_net:caif_netlink_parms(): no params data found [ 58.437001][ T8167] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 58.470609][ T8170] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.477842][ T8170] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.485463][ T8170] device bridge_slave_1 entered promiscuous mode [ 58.505545][ T8170] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.534224][ T8170] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.544266][ T3102] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.552840][ T3102] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.584317][ T3102] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.593220][ T3102] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.601603][ T3102] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.622523][ T8172] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.629853][ T8172] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.637782][ T8172] device bridge_slave_0 entered promiscuous mode [ 58.646570][ T8172] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.653777][ T8172] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.661422][ T8172] device bridge_slave_1 entered promiscuous mode [ 58.683232][ T8170] team0: Port device team_slave_0 added [ 58.704703][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.715375][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.736087][ T8164] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 58.747205][ T8164] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.765112][ T8170] team0: Port device team_slave_1 added [ 58.776026][ T8174] chnl_net:caif_netlink_parms(): no params data found [ 58.791697][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.801212][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.809864][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.818580][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.827104][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.835709][ T8172] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.847598][ T8172] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.899485][ T8170] device hsr_slave_0 entered promiscuous mode [ 58.937256][ T8170] device hsr_slave_1 entered promiscuous mode [ 58.976881][ T8170] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.002369][ T8179] chnl_net:caif_netlink_parms(): no params data found [ 59.045472][ T8172] team0: Port device team_slave_0 added [ 59.056314][ T8172] team0: Port device team_slave_1 added [ 59.080057][ T8174] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.087566][ T8174] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.095649][ T8174] device bridge_slave_0 entered promiscuous mode [ 59.104325][ T8174] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.111448][ T8174] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.120465][ T8174] device bridge_slave_1 entered promiscuous mode [ 59.144576][ T8164] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.154680][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.162392][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.181538][ T8167] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.249371][ T8172] device hsr_slave_0 entered promiscuous mode [ 59.287826][ T8172] device hsr_slave_1 entered promiscuous mode [ 59.326847][ T8172] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.346092][ T8179] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.357066][ T8179] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.364908][ T8179] device bridge_slave_0 entered promiscuous mode [ 59.385894][ T8167] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.400681][ T8179] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.408687][ T8179] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.418572][ T8179] device bridge_slave_1 entered promiscuous mode [ 59.426828][ T8174] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.444848][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.452927][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.464812][ T8170] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 59.503616][ T8170] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 59.559668][ T8174] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.589758][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.604831][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.618443][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.626233][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.634779][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.643520][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.652427][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.659552][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.670923][ T8189] ptrace attach of "/root/syz-executor.0"[8188] was attempted by "/root/syz-executor.0"[8189] [ 59.686896][ T8179] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 164.696609][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 164.703396][ C1] rcu: 1-...!: (1 GPs behind) idle=896/1/0x4000000000000002 softirq=11130/11131 fqs=0 [ 164.713278][ C1] (t=10501 jiffies g=5857 q=69) [ 164.718211][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g5857 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 164.729387][ C1] rcu: RCU grace-period kthread stack dump: [ 164.735259][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 164.743157][ C1] Call Trace: [ 164.746450][ C1] __schedule+0x9a0/0xcc0 [ 164.753205][ C1] schedule+0x181/0x210 [ 164.757347][ C1] schedule_timeout+0x14f/0x240 [ 164.762213][ C1] ? run_local_timers+0x120/0x120 [ 164.767253][ C1] rcu_gp_kthread+0xed8/0x1770 [ 164.772051][ C1] kthread+0x332/0x350 [ 164.776136][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 164.781253][ C1] ? kthread_blkcg+0xe0/0xe0 [ 164.785843][ C1] ret_from_fork+0x24/0x30 [ 164.790263][ C1] NMI backtrace for cpu 1 [ 164.794582][ C1] CPU: 1 PID: 87 Comm: kworker/u4:2 Not tainted 5.4.0-syzkaller #0 [ 164.802453][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 164.812545][ C1] Workqueue: 0x0 (gid-cache-wq) [ 164.817465][ C1] Call Trace: [ 164.820733][ C1] [ 164.823571][ C1] dump_stack+0x1fb/0x318 [ 164.827890][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 164.832725][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 164.838872][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 164.844927][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 164.850894][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 164.856787][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 164.861918][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 164.867120][ C1] ? trace_hardirqs_off+0x74/0x80 [ 164.872143][ C1] update_process_times+0x12d/0x180 [ 164.877418][ C1] tick_sched_timer+0x263/0x420 [ 164.882256][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 164.887794][ C1] __hrtimer_run_queues+0x403/0x840 [ 164.892991][ C1] hrtimer_interrupt+0x38c/0xda0 [ 164.898053][ C1] ? debug_smp_processor_id+0x9/0x20 [ 164.903356][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 164.909432][ C1] apic_timer_interrupt+0xf/0x20 [ 164.914353][ C1] [ 164.917280][ C1] RIP: 0010:__memcg_kmem_uncharge+0xe/0x2e0 [ 164.923157][ C1] Code: c3 08 02 00 00 48 89 df 4c 89 f6 e8 dc 7d ff ff 5b 41 5e 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 50 <89> f3 49 89 fc 48 b8 00 00 00 00 00 fc ff df 4c 8d 77 38 4d 89 f5 [ 164.942761][ C1] RSP: 0018:ffffc90001117bf0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 164.951167][ C1] RAX: ffffffff81486ea4 RBX: ffffea00024a3280 RCX: ffff8880a9b7e200 [ 164.959128][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00024a3280 [ 164.967089][ C1] RBP: ffffc90001117c20 R08: 000000000003a768 R09: fffffbfff120248a [ 164.975054][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff8880973fce20 [ 164.983009][ C1] R13: dffffc0000000000 R14: 1ffff11012e7f9c4 R15: ffff88809721b7a8 [ 164.990977][ C1] ? free_thread_stack+0x124/0x590 [ 164.996089][ C1] ? free_thread_stack+0x124/0x590 [ 165.001186][ C1] free_thread_stack+0x12e/0x590 [ 165.006110][ C1] put_task_stack+0xa3/0x130 [ 165.010685][ C1] finish_task_switch+0x3f1/0x550 [ 165.015702][ C1] __schedule+0x9a8/0xcc0 [ 165.020024][ C1] schedule+0x181/0x210 [ 165.024167][ C1] worker_thread+0x10d6/0x1630 [ 165.028936][ C1] kthread+0x332/0x350 [ 165.032987][ C1] ? rcu_lock_release+0x30/0x30 [ 165.037822][ C1] ? kthread_blkcg+0xe0/0xe0 [ 165.042403][ C1] ret_from_fork+0x24/0x30