[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 45.729924][ T26] audit: type=1800 audit(1575340238.414:25): pid=8139 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 45.757879][ T26] audit: type=1800 audit(1575340238.414:26): pid=8139 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 45.797577][ T26] audit: type=1800 audit(1575340238.414:27): pid=8139 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 '10.128.0.239' (ECDSA) to the list of known hosts. 2019/12/03 02:30:50 fuzzer started 2019/12/03 02:30:52 dialing manager at 10.128.0.26:38907 2019/12/03 02:30:52 syscalls: 2697 2019/12/03 02:30:52 code coverage: enabled 2019/12/03 02:30:52 comparison tracing: enabled 2019/12/03 02:30:52 extra coverage: extra coverage is not supported by the kernel 2019/12/03 02:30:52 setuid sandbox: enabled 2019/12/03 02:30:52 namespace sandbox: enabled 2019/12/03 02:30:52 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 02:30:52 fault injection: enabled 2019/12/03 02:30:52 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 02:30:52 net packet injection: enabled 2019/12/03 02:30:52 net device setup: enabled 2019/12/03 02:30:52 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 02:30:52 devlink PCI setup: PCI device 0000:00:10.0 is not available 02:30:53 executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./file0\x00', 0x0) mount$overlay(0x400002, &(0x7f0000000000)='./file0\x00', &(0x7f00000000c0)='overlay\x00', 0x0, &(0x7f00000002c0)={[{@lowerdir={'lowerdir', 0x3d, './file0'}, 0x3a}], [], 0x42f}) 02:30:53 executing program 1: bpf$MAP_CREATE(0x0, &(0x7f0000214fd4)={0x19, 0x4, 0x4, 0x234, 0x0, 0xffffffffffffffff, 0x0, [0x305f, 0x5f, 0x32e, 0x5f, 0x5f, 0x80ffff, 0x80ffff], 0x0, 0xffffffffffffffff, 0x7}, 0x3c) syzkaller login: [ 60.625900][ T8304] IPVS: ftp: loaded support on port[0] = 21 02:30:53 executing program 2: bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000000)={&(0x7f0000000100)={{0xeb9f, 0x1, 0x0, 0x18, 0x0, 0x18, 0x18, 0x2, [@struct={0x0, 0x1, 0x0, 0x4, 0x0, 0x0, [{}]}]}}, &(0x7f0000000240)=""/178, 0xffff7f, 0xb2, 0x8}, 0x20) [ 60.804256][ T8304] chnl_net:caif_netlink_parms(): no params data found [ 60.852209][ T8307] IPVS: ftp: loaded support on port[0] = 21 [ 60.890934][ T8304] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.900633][ T8304] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.908986][ T8304] device bridge_slave_0 entered promiscuous mode [ 60.932994][ T8304] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.941970][ T8304] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.951186][ T8304] device bridge_slave_1 entered promiscuous mode [ 61.002253][ T8304] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.046332][ T8304] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.065243][ T8309] IPVS: ftp: loaded support on port[0] = 21 02:30:53 executing program 3: r0 = memfd_create(&(0x7f00000000c0)='queue1\x00\x00\x00\x00\x00\x00\x00\x001;\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x06\x00\x00\x00\x00\x00\xcc\xbf}\xdd\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xb2\x1e\x00', 0x0) r1 = syz_open_dev$sndseq(&(0x7f0000000100)='/dev/snd/seq\x00', 0x0, 0x1) r2 = dup2(r1, r0) ioctl$SNDRV_SEQ_IOCTL_CREATE_QUEUE(r2, 0xc08c5332, &(0x7f0000000140)={0x0, 0x0, 0x0, 'queue1\x00'}) write$sndseq(r2, &(0x7f0000000000)=[{0x0, 0x3, 0x0, 0x0, @tick, {}, {}, @connect}], 0xfcc8) setsockopt(0xffffffffffffffff, 0x8, 0x0, &(0x7f0000000200), 0x0) write$P9_RXATTRCREATE(0xffffffffffffffff, &(0x7f0000000080)={0x7}, 0x7) socketpair$unix(0x1, 0x0, 0x0, &(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}) dup(r3) socket$inet_udplite(0x2, 0x2, 0x88) keyctl$get_persistent(0x3, 0x0, 0x0) [ 61.111594][ T8307] chnl_net:caif_netlink_parms(): no params data found [ 61.131528][ T8304] team0: Port device team_slave_0 added [ 61.147160][ T8304] team0: Port device team_slave_1 added [ 61.241462][ T8304] device hsr_slave_0 entered promiscuous mode [ 61.299816][ T8304] device hsr_slave_1 entered promiscuous mode 02:30:54 executing program 4: r0 = socket$nl_generic(0x10, 0x3, 0x10) sendmsg$nl_generic(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)={&(0x7f00000000c0)=ANY=[@ANYBLOB="240000003300070100000000400000e002000000ffd38d9b0800010004000b0004000800"], 0x24}}, 0x0) [ 61.363252][ T8307] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.370955][ T8307] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.378918][ T8307] device bridge_slave_0 entered promiscuous mode [ 61.403514][ T8312] IPVS: ftp: loaded support on port[0] = 21 [ 61.422553][ T8307] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.438448][ T8307] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.458475][ T8307] device bridge_slave_1 entered promiscuous mode [ 61.516063][ T8304] netdevsim netdevsim0 netdevsim0: renamed from eth0 02:30:54 executing program 5: r0 = socket$vsock_stream(0x28, 0x1, 0x0) connect$vsock_stream(r0, &(0x7f0000000000)={0x28, 0x0, 0x0, @reserved}, 0x10) connect$vsock_stream(r0, &(0x7f0000000140)={0x28, 0x0, 0x0, @host}, 0x10) [ 61.593923][ T8304] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 61.654089][ T8307] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.672017][ T8304] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 61.673649][ T8314] IPVS: ftp: loaded support on port[0] = 21 [ 61.753383][ T8307] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.775867][ T8307] team0: Port device team_slave_0 added [ 61.782470][ T8304] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 61.847599][ T8307] team0: Port device team_slave_1 added [ 61.869438][ T8316] IPVS: ftp: loaded support on port[0] = 21 [ 61.910208][ T8307] device hsr_slave_0 entered promiscuous mode [ 61.938110][ T8307] device hsr_slave_1 entered promiscuous mode [ 62.009038][ T8307] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.024307][ T8309] chnl_net:caif_netlink_parms(): no params data found [ 62.077333][ T8309] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.084678][ T8309] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.092844][ T8309] device bridge_slave_0 entered promiscuous mode [ 62.100682][ T8309] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.107721][ T8309] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.115601][ T8309] device bridge_slave_1 entered promiscuous mode [ 62.179555][ T8309] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.205813][ T8307] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 62.261936][ T8307] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 62.314248][ T8309] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.334068][ T8312] chnl_net:caif_netlink_parms(): no params data found [ 62.342192][ T8307] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 62.410822][ T8307] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 62.506723][ T8309] team0: Port device team_slave_0 added [ 62.516861][ T8309] team0: Port device team_slave_1 added [ 62.579082][ T8312] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.586151][ T8312] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.594876][ T8312] device bridge_slave_0 entered promiscuous mode [ 62.606511][ T8312] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.613647][ T8312] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.621374][ T8312] device bridge_slave_1 entered promiscuous mode [ 62.710405][ T8309] device hsr_slave_0 entered promiscuous mode [ 62.748358][ T8309] device hsr_slave_1 entered promiscuous mode [ 62.817902][ T8309] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.833927][ T8314] chnl_net:caif_netlink_parms(): no params data found [ 62.851498][ T8312] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.862621][ T8312] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.888898][ T8304] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.915913][ T8312] team0: Port device team_slave_0 added [ 62.929407][ T8316] chnl_net:caif_netlink_parms(): no params data found [ 62.960895][ T8314] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.970530][ T8314] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.978916][ T8314] device bridge_slave_0 entered promiscuous mode [ 62.987657][ T8312] team0: Port device team_slave_1 added [ 63.012374][ T8314] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.019954][ T8314] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.028047][ T8314] device bridge_slave_1 entered promiscuous mode [ 63.055517][ T8316] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.066039][ T8316] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.075356][ T8316] device bridge_slave_0 entered promiscuous mode [ 63.083799][ T8316] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.090997][ T8316] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.098947][ T8316] device bridge_slave_1 entered promiscuous mode [ 63.120354][ T8314] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.200502][ T8312] device hsr_slave_0 entered promiscuous mode [ 63.238313][ T8312] device hsr_slave_1 entered promiscuous mode [ 63.307917][ T8312] debugfs: Directory 'hsr0' with parent '/' already present! [ 63.319520][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 63.327721][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.336026][ T8309] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 63.373067][ T8309] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 63.421605][ T8314] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.444296][ T8304] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.455898][ T8316] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.465088][ T8309] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 63.501248][ T8314] team0: Port device team_slave_0 added [ 63.507059][ T8309] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 63.565042][ T8316] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.575242][ T8314] team0: Port device team_slave_1 added [ 63.590747][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.603258][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.612848][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.620205][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.629295][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.638147][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.646402][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.653478][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.692042][ T8316] team0: Port device team_slave_0 added [ 63.698577][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.707308][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.779716][ T8314] device hsr_slave_0 entered promiscuous mode [ 63.808233][ T8314] device hsr_slave_1 entered promiscuous mode [ 63.877917][ T8314] debugfs: Directory 'hsr0' with parent '/' already present! [ 63.886760][ T8316] team0: Port device team_slave_1 added [ 63.896984][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.905619][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 63.914200][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.923963][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 63.933762][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.947343][ T8312] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 64.011426][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.020444][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.029537][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.046030][ T8312] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 64.100755][ T8307] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.107534][ T8312] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 64.149568][ T8312] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 64.185539][ T8304] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 64.196713][ T8304] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.220239][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.229459][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.246196][ T8309] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.291204][ T8316] device hsr_slave_0 entered promiscuous mode [ 64.358228][ T8316] device hsr_slave_1 entered promiscuous mode [ 64.408030][ T8316] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.418362][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.426231][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.446223][ T8307] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.473652][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.481783][ T8323] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.489871][ T8314] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 64.521512][ T8314] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 64.578998][ T8309] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.593043][ T8304] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.601028][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 64.610544][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.619621][ T1099] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.626714][ T1099] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.634549][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.643191][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.651303][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.659874][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.668327][ T1099] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.675361][ T1099] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.683554][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.691723][ T8314] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 64.743186][ T8314] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 64.801010][ T8316] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 64.850363][ T8316] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 64.892471][ T8316] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 64.954439][ T8316] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 65.021122][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.030002][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.038694][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.045739][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.053579][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.063045][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.071982][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.081050][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.088159][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.130508][ T8321] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.139626][ T8321] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.148396][ T8321] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.156884][ T8321] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.165356][ T8321] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.210610][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.235046][ T8327] overlayfs: overlapping lowerdir path [ 65.247458][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.256477][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.272401][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.284756][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.297593][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.312101][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.322991][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.336019][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.347343][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.359667][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 65.372691][ T1099] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.400056][ T8309] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 65.416166][ T8309] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 65.461967][ T8309] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 170.437757][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 170.444518][ C1] rcu: 1-...!: (1 GPs behind) idle=4ba/1/0x4000000000000002 softirq=11535/11544 fqs=28 [ 170.454565][ C1] (t=10500 jiffies g=6517 q=346) [ 170.459581][ C1] rcu: rcu_preempt kthread starved for 10442 jiffies! g6517 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 170.470667][ C1] rcu: RCU grace-period kthread stack dump: [ 170.476544][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 170.484451][ C1] Call Trace: [ 170.487740][ C1] __schedule+0x9a0/0xcc0 [ 170.492067][ C1] schedule+0x181/0x210 [ 170.496233][ C1] schedule_timeout+0x14f/0x240 [ 170.501075][ C1] ? run_local_timers+0x120/0x120 [ 170.506119][ C1] rcu_gp_kthread+0xed8/0x1770 [ 170.510882][ C1] kthread+0x332/0x350 [ 170.515028][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 170.520137][ C1] ? kthread_blkcg+0xe0/0xe0 [ 170.524720][ C1] ret_from_fork+0x24/0x30 [ 170.529168][ C1] NMI backtrace for cpu 1 [ 170.533489][ C1] CPU: 1 PID: 8327 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 [ 170.541710][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 170.551752][ C1] Call Trace: [ 170.555023][ C1] [ 170.557867][ C1] dump_stack+0x1fb/0x318 [ 170.562194][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 170.567048][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 170.573368][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 170.579439][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 170.585438][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 170.591323][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 170.596430][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 170.601624][ C1] ? trace_hardirqs_off+0x74/0x80 [ 170.606668][ C1] update_process_times+0x12d/0x180 [ 170.613874][ C1] tick_sched_timer+0x263/0x420 [ 170.619610][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 170.625158][ C1] __hrtimer_run_queues+0x403/0x840 [ 170.630368][ C1] hrtimer_interrupt+0x38c/0xda0 [ 170.635312][ C1] ? debug_smp_processor_id+0x9/0x20 [ 170.640592][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 170.646127][ C1] apic_timer_interrupt+0xf/0x20 [ 170.651047][ C1] [ 170.653978][ C1] RIP: 0010:mod_memcg_page_state+0x16/0x190 [ 170.659857][ C1] Code: 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 54 53 41 89 f6 48 89 fb e8 da 28 2e 00 <48> 83 c3 38 48 89 d8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 [ 170.679454][ C1] RSP: 0018:ffffc900025477d0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 170.688204][ C1] RAX: ffffffff81487326 RBX: ffffea00026c6300 RCX: 0000000000040000 [ 170.696168][ C1] RDX: ffffc90001e19000 RSI: 000000000003ffff RDI: 0000000000040000 [ 170.704130][ C1] RBP: ffffc900025477f0 R08: 000000000003a768 R09: ffffed10127152c7 [ 170.712091][ C1] R10: ffffed10127152c7 R11: 0000000000000000 R12: ffff88809a687ca0 [ 170.720069][ C1] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880938a9628 [ 170.728147][ C1] ? mod_memcg_page_state+0x16/0x190 [ 170.733431][ C1] free_thread_stack+0x168/0x590 [ 170.738359][ C1] put_task_stack+0xa3/0x130 [ 170.742942][ C1] finish_task_switch+0x3f1/0x550 [ 170.747962][ C1] __schedule+0x9a8/0xcc0 [ 170.752291][ C1] ? ___preempt_schedule+0x16/0x18 [ 170.757393][ C1] preempt_schedule+0xdb/0x120 [ 170.762150][ C1] ___preempt_schedule+0x16/0x18 [ 170.767078][ C1] ? vprintk_emit+0x2fe/0x3a0 [ 170.771741][ C1] ? vprintk_emit+0x368/0x3a0 [ 170.776410][ C1] vprintk_emit+0x36d/0x3a0 [ 170.780911][ C1] vprintk_default+0x28/0x30 [ 170.785490][ C1] vprintk_func+0x158/0x170 [ 170.789982][ C1] printk+0x62/0x8d [ 170.793778][ C1] ? ovl_lookup_inode+0x130/0x130 [ 170.798793][ C1] ? iput+0x90/0x690 [ 170.802682][ C1] ovl_check_layer+0x125/0x180 [ 170.807437][ C1] ovl_fill_super+0x3006/0x49e0 [ 170.812310][ C1] ? ovl_mount+0x40/0x40 [ 170.816546][ C1] mount_nodev+0x57/0xf0 [ 170.820782][ C1] ovl_mount+0x2c/0x40 [ 170.824842][ C1] legacy_get_tree+0xf9/0x1a0 [ 170.829504][ C1] ? virtio_fs_request_dispatch_work+0x620/0x620 [ 170.835820][ C1] vfs_get_tree+0x8b/0x2a0 [ 170.840223][ C1] do_mount+0x16bb/0x24f0 [ 170.844548][ C1] ? copy_mount_options+0x308/0x3c0 [ 170.849734][ C1] ksys_mount+0xcc/0x100 [ 170.854056][ C1] __x64_sys_mount+0xbf/0xd0 [ 170.858639][ C1] do_syscall_64+0xf7/0x1c0 [ 170.863137][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 170.869018][ C1] RIP: 0033:0x45a679 [ 170.872902][ C1] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 170.892768][ C1] RSP: 002b:00007f18101f2c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 170.901171][ C1] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045a679 [ 170.909135][ C1] RDX: 00000000200000c0 RSI: 0000000020000000 RDI: 0000000000400002 [ 170.917094][ C1] RBP: 000000000075bf20 R08: 00000000200002c0 R09: 0000000000000000 [ 170.925060][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f18101f36d4 [ 170.933021][ C1] R13: 00000000004c7a03 R14: 00000000004de858 R15: 00000000ffffffff