[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 51.607916][ T27] audit: type=1800 audit(1578471043.777:25): pid=8348 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 51.635710][ T27] audit: type=1800 audit(1578471043.777:26): pid=8348 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 51.684474][ T27] audit: type=1800 audit(1578471043.777:27): pid=8348 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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 '10.128.10.31' (ECDSA) to the list of known hosts. 2020/01/08 08:10:56 fuzzer started 2020/01/08 08:10:57 dialing manager at 10.128.0.26:35703 syzkaller login: [ 65.736695][ T8503] gcc (8503) used greatest stack depth: 23848 bytes left 2020/01/08 08:10:57 syscalls: 2824 2020/01/08 08:10:57 code coverage: enabled 2020/01/08 08:10:57 comparison tracing: enabled 2020/01/08 08:10:57 extra coverage: enabled 2020/01/08 08:10:57 setuid sandbox: enabled 2020/01/08 08:10:57 namespace sandbox: enabled 2020/01/08 08:10:57 Android sandbox: /sys/fs/selinux/policy does not exist 2020/01/08 08:10:57 fault injection: enabled 2020/01/08 08:10:57 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/01/08 08:10:57 net packet injection: enabled 2020/01/08 08:10:57 net device setup: enabled 2020/01/08 08:10:57 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2020/01/08 08:10:57 devlink PCI setup: PCI device 0000:00:10.0 is not available 08:10:59 executing program 0: socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = dup2(r1, r0) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) r3 = openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000100)='/dev/dlm_plock\x00', 0x41, 0x0) write$nbd(r3, &(0x7f0000000080)={0x1000000, 0x0, 0x0, 0x0, 0x0, "82b0cfc4336aa6771538be0633e8bd3410000000000000005616b17333ad88f7e4a258981e458e96afda2a87223ba7f4"}, 0x40) 08:10:59 executing program 1: r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0) setsockopt$bt_l2cap_L2CAP_OPTIONS(r0, 0x6, 0x1, &(0x7f0000000000), 0xc) [ 66.992853][ T8515] IPVS: ftp: loaded support on port[0] = 21 [ 67.149989][ T8515] chnl_net:caif_netlink_parms(): no params data found [ 67.189747][ T8515] bridge0: port 1(bridge_slave_0) entered blocking state 08:10:59 executing program 2: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = socket$alg(0x26, 0x5, 0x0) close(r2) socket$pppoe(0x18, 0x1, 0x0) syz_kvm_setup_cpu$x86(r2, 0xffffffffffffffff, &(0x7f0000000000/0x18000)=nil, 0x0, 0x480b75594570cc50, 0x0, 0x0, 0xfffffcc5) [ 67.204506][ T8515] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.217125][ T8515] device bridge_slave_0 entered promiscuous mode [ 67.232240][ T8518] IPVS: ftp: loaded support on port[0] = 21 [ 67.255597][ T8515] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.262889][ T8515] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.277609][ T8515] device bridge_slave_1 entered promiscuous mode [ 67.347662][ T8515] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.361533][ T8515] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.391481][ T8515] team0: Port device team_slave_0 added [ 67.399938][ T8515] team0: Port device team_slave_1 added 08:10:59 executing program 3: unshare(0x20600) r0 = socket$inet6_icmp_raw(0xa, 0x3, 0x3a) fadvise64(r0, 0x0, 0x0, 0x0) [ 67.440503][ T8520] IPVS: ftp: loaded support on port[0] = 21 [ 67.467880][ T8515] device hsr_slave_0 entered promiscuous mode [ 67.545665][ T8515] device hsr_slave_1 entered promiscuous mode [ 67.692530][ T8522] IPVS: ftp: loaded support on port[0] = 21 08:10:59 executing program 4: socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000100)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = socket$nl_route(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000300)={'bridge_slave_0\x00', 0x0}) sendmsg$nl_route(r1, &(0x7f0000000080)={0x0, 0x0, &(0x7f00000006c0)={&(0x7f0000001700)=@newlink={0x4c, 0x10, 0x1, 0x0, 0x0, {0x0, 0x0, 0x0, r2}, [@IFLA_LINKINFO={0x2c, 0x12, @bridge_slave={{0x14, 0x1, 'bridge_slave\x00'}, {0x14, 0x5, [@IFLA_BRPORT_COST={0x8, 0x3, 0x8}, @IFLA_BRPORT_PRIORITY={0x8}]}}}]}, 0x4c}}, 0x0) [ 67.733880][ T8518] chnl_net:caif_netlink_parms(): no params data found [ 67.872765][ T8515] netdevsim netdevsim0 netdevsim0: renamed from eth0 08:11:00 executing program 5: futex(&(0x7f000000cffc)=0x4, 0xb, 0x4, &(0x7f0000000040)={0x77359400}, &(0x7f0000048000), 0x0) r0 = gettid() timer_create(0x0, &(0x7f0000044000)={0x0, 0x12}, &(0x7f0000044000)) timer_settime(0x0, 0x0, &(0x7f000006b000)={{0x0, 0x8}, {0x0, 0x9}}, 0x0) tkill(r0, 0x16) futex(&(0x7f000000cffc), 0xc, 0x1, 0x0, &(0x7f0000048000), 0x0) [ 67.955168][ T8515] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 68.032601][ T8518] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.042975][ T8526] IPVS: ftp: loaded support on port[0] = 21 [ 68.049100][ T8518] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.056786][ T8518] device bridge_slave_0 entered promiscuous mode [ 68.076835][ T8515] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 68.126801][ T8515] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.183556][ T8518] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.191425][ T8518] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.199478][ T8518] device bridge_slave_1 entered promiscuous mode [ 68.223675][ T8518] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.237874][ T8520] chnl_net:caif_netlink_parms(): no params data found [ 68.257126][ T8528] IPVS: ftp: loaded support on port[0] = 21 [ 68.267002][ T8518] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.309445][ T8518] team0: Port device team_slave_0 added [ 68.344344][ T8520] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.353673][ T8520] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.361464][ T8520] device bridge_slave_0 entered promiscuous mode [ 68.370927][ T8518] team0: Port device team_slave_1 added [ 68.427075][ T8518] device hsr_slave_0 entered promiscuous mode [ 68.464757][ T8518] device hsr_slave_1 entered promiscuous mode [ 68.514592][ T8518] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 68.522282][ T8518] Cannot create hsr debugfs directory [ 68.533281][ T8520] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.540892][ T8520] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.548816][ T8520] device bridge_slave_1 entered promiscuous mode [ 68.572168][ T8522] chnl_net:caif_netlink_parms(): no params data found [ 68.587579][ T8520] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.619245][ T8520] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.644703][ T8520] team0: Port device team_slave_0 added [ 68.653956][ T8520] team0: Port device team_slave_1 added [ 68.727675][ T8522] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.735609][ T8522] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.743158][ T8522] device bridge_slave_0 entered promiscuous mode [ 68.752569][ T8522] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.759682][ T8522] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.767542][ T8522] device bridge_slave_1 entered promiscuous mode [ 68.816010][ T8520] device hsr_slave_0 entered promiscuous mode [ 68.864722][ T8520] device hsr_slave_1 entered promiscuous mode [ 68.904540][ T8520] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 68.912139][ T8520] Cannot create hsr debugfs directory [ 68.922004][ T8526] chnl_net:caif_netlink_parms(): no params data found [ 68.933536][ T8522] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.974520][ T8522] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.024039][ T8518] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 69.068117][ T8518] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 69.116256][ T8518] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 69.160046][ T8518] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 69.215504][ T8522] team0: Port device team_slave_0 added [ 69.244191][ T8526] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.252179][ T8526] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.260523][ T8526] device bridge_slave_0 entered promiscuous mode [ 69.268867][ T8522] team0: Port device team_slave_1 added [ 69.275543][ T8528] chnl_net:caif_netlink_parms(): no params data found [ 69.291482][ T8515] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.304025][ T8526] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.311462][ T8526] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.319623][ T8526] device bridge_slave_1 entered promiscuous mode [ 69.387182][ T8522] device hsr_slave_0 entered promiscuous mode [ 69.445532][ T8522] device hsr_slave_1 entered promiscuous mode [ 69.484534][ T8522] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 69.492162][ T8522] Cannot create hsr debugfs directory [ 69.521488][ T8526] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.532775][ T8526] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.552436][ T8515] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.583190][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 69.593395][ T2784] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.617671][ T8526] team0: Port device team_slave_0 added [ 69.623479][ T8528] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.631364][ T8528] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.639258][ T8528] device bridge_slave_0 entered promiscuous mode [ 69.649091][ T8528] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.657360][ T8528] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.667462][ T8528] device bridge_slave_1 entered promiscuous mode [ 69.685179][ T8528] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.699238][ T8528] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.709394][ T8526] team0: Port device team_slave_1 added [ 69.720492][ T2898] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 69.729090][ T2898] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.737752][ T2898] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.744917][ T2898] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.754197][ T2898] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 69.838038][ T8526] device hsr_slave_0 entered promiscuous mode [ 69.877514][ T8526] device hsr_slave_1 entered promiscuous mode [ 69.924514][ T8526] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 69.932086][ T8526] Cannot create hsr debugfs directory [ 69.944475][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 69.953030][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.962829][ T2778] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.969918][ T2778] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.978516][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 70.000885][ T8520] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 70.066291][ T8520] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 70.122182][ T8520] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 70.191396][ T8528] team0: Port device team_slave_0 added [ 70.206035][ T8528] team0: Port device team_slave_1 added [ 70.213573][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 70.222416][ T8520] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 70.291997][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 70.300846][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.309128][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 70.317790][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.326897][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.397199][ T8528] device hsr_slave_0 entered promiscuous mode [ 70.435820][ T8528] device hsr_slave_1 entered promiscuous mode [ 70.484568][ T8528] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 70.492140][ T8528] Cannot create hsr debugfs directory [ 70.540210][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 70.549247][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.557849][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 70.566121][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.579636][ T8515] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.592410][ T8518] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.626648][ T8515] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.642642][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.650741][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.663178][ T8522] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 70.727977][ T8522] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 70.758387][ T8522] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 70.815811][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 70.824981][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.833721][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 70.841623][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.856677][ T8518] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.869239][ T8515] device veth0_vlan entered promiscuous mode [ 70.885217][ T8522] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 70.935684][ T8520] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.942502][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 70.950761][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.959489][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.967886][ T2893] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.988268][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 70.997299][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.006044][ T2778] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.013115][ T2778] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.021520][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 71.054343][ T8515] device veth1_vlan entered promiscuous mode [ 71.064885][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.072732][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 71.081347][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.090186][ T2896] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.097278][ T2896] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.110358][ T8528] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 71.170012][ T8528] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 71.227629][ T8528] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 71.277803][ T8528] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 71.343631][ T8520] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.362407][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.371078][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 71.380185][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.388571][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 71.415731][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 71.424260][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 71.433896][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.443156][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 71.451785][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 71.460271][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 71.468570][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 71.478074][ T2896] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.494900][ T8526] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 71.550282][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 71.560344][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 71.590408][ T2778] bridge0: port 1(bridge_slave_0) entered blocking state [ 71.597551][ T2778] bridge0: port 1(bridge_slave_0) entered forwarding state [ 71.616785][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 71.630671][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 71.639367][ T2778] bridge0: port 2(bridge_slave_1) entered blocking state [ 71.646458][ T2778] bridge0: port 2(bridge_slave_1) entered forwarding state [ 71.661012][ T8526] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 176.604405][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 176.611240][ C0] rcu: 0-....: (1 GPs behind) idle=9ae/1/0x4000000000000002 softirq=13186/13194 fqs=2764 [ 176.621383][ C0] (t=10500 jiffies g=6729 q=192) [ 176.626402][ C0] rcu: rcu_preempt kthread starved for 4959 jiffies! g6729 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 176.637604][ C0] rcu: RCU grace-period kthread stack dump: [ 176.643479][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 176.651367][ C0] Call Trace: [ 176.654750][ C0] __schedule+0x9a0/0xcc0 [ 176.659080][ C0] schedule+0x181/0x210 [ 176.663229][ C0] schedule_timeout+0x14f/0x240 [ 176.668194][ C0] ? run_local_timers+0x120/0x120 [ 176.673224][ C0] rcu_gp_kthread+0xed8/0x1770 [ 176.677997][ C0] kthread+0x332/0x350 [ 176.682055][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 176.687159][ C0] ? kthread_blkcg+0xe0/0xe0 [ 176.691746][ C0] ret_from_fork+0x24/0x30 [ 176.696166][ C0] NMI backtrace for cpu 0 [ 176.700483][ C0] CPU: 0 PID: 8533 Comm: syz-executor.0 Not tainted 5.5.0-rc5-syzkaller #0 [ 176.709051][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 176.719091][ C0] Call Trace: [ 176.722362][ C0] [ 176.725207][ C0] dump_stack+0x1fb/0x318 [ 176.729533][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 176.734371][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 176.740516][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 176.746570][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 176.752539][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 176.758417][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 176.763539][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 176.768732][ C0] ? trace_hardirqs_off+0x74/0x80 [ 176.773746][ C0] update_process_times+0x12d/0x180 [ 176.778938][ C0] tick_sched_timer+0x263/0x420 [ 176.783814][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 176.789350][ C0] __hrtimer_run_queues+0x403/0x840 [ 176.794583][ C0] hrtimer_interrupt+0x38c/0xda0 [ 176.799651][ C0] ? debug_smp_processor_id+0x9/0x20 [ 176.804935][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 176.810479][ C0] apic_timer_interrupt+0xf/0x20 [ 176.815399][ C0] [ 176.818328][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x1c/0x50 [ 176.824469][ C0] Code: ed 07 48 89 de e8 84 f4 3b 00 5b 5d c3 cc 48 8b 04 24 65 48 8b 0c 25 c0 1d 02 00 65 8b 15 38 5f 8b 7e f7 c2 00 01 1f 00 75 2c <8b> 91 80 13 00 00 83 fa 02 75 21 48 8b 91 88 13 00 00 48 8b 32 48 [ 176.844062][ C0] RSP: 0018:ffffc90002207e08 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 176.852459][ C0] RAX: ffffffff814896c6 RBX: ffffea00026a09c0 RCX: ffff88808b6a4200 [ 176.860420][ C0] RDX: 0000000000000001 RSI: 00000000fffffffc RDI: ffffea00026a09c0 [ 176.868376][ C0] RBP: ffffc90002207e30 R08: 000000000003a728 R09: fffffbfff124248a [ 176.876333][ C0] R10: fffffbfff124248a R11: 0000000000000000 R12: ffff888096ebcba0 [ 176.884296][ C0] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880a4d655b8 [ 176.892269][ C0] ? mod_memcg_page_state+0x16/0x190 [ 176.897545][ C0] ? free_thread_stack+0x124/0x590 [ 176.902643][ C0] ? mod_memcg_page_state+0x16/0x190 [ 176.907915][ C0] free_thread_stack+0x168/0x590 [ 176.912849][ C0] put_task_stack+0xa3/0x130 [ 176.917515][ C0] finish_task_switch+0x3f1/0x550 [ 176.922534][ C0] schedule_tail+0x20/0x1a0 [ 176.927025][ C0] ret_from_fork+0x8/0x30 [ 176.931338][ C0] RIP: 0033:0x45951a [ 176.935290][ C0] Code: Bad RIP value. [ 176.939368][ C0] RSP: 002b:00007ffc04e90870 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 176.947783][ C0] RAX: 0000000000000000 RBX: 00007ffc04e90870 RCX: 000000000045951a [ 176.958263][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 176.966225][ C0] RBP: 00007ffc04e908b0 R08: 0000000000000001 R09: 000000000100f940 [ 176.974188][ C0] R10: 000000000100fc10 R11: 0000000000000246 R12: 0000000000000001 [ 176.982152][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffc04e90900