[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. [ 20.763580][ C1] random: crng init done [ 20.767850][ C1] random: 7 urandom warning(s) missed due to ratelimiting Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.170' (ECDSA) to the list of known hosts. 2020/06/30 20:44:46 fuzzer started 2020/06/30 20:44:46 dialing manager at 10.128.0.105:37157 2020/06/30 20:44:46 syscalls: 3106 2020/06/30 20:44:46 code coverage: enabled 2020/06/30 20:44:46 comparison tracing: enabled 2020/06/30 20:44:46 extra coverage: enabled 2020/06/30 20:44:46 setuid sandbox: enabled 2020/06/30 20:44:46 namespace sandbox: enabled 2020/06/30 20:44:46 Android sandbox: /sys/fs/selinux/policy does not exist 2020/06/30 20:44:46 fault injection: enabled 2020/06/30 20:44:46 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/06/30 20:44:46 net packet injection: enabled 2020/06/30 20:44:46 net device setup: enabled 2020/06/30 20:44:46 concurrency sanitizer: enabled 2020/06/30 20:44:46 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/06/30 20:44:46 USB emulation: enabled 2020/06/30 20:44:47 suppressing KCSAN reports in functions: 'generic_write_end' 'page_counter_charge' '__ext4_new_inode' 'blk_mq_dispatch_rq_list' 20:44:49 executing program 0: r0 = socket$nl_route(0x10, 0x3, 0x0) r1 = socket$nl_route(0x10, 0x3, 0x0) r2 = socket$netlink(0x10, 0x3, 0x0) r3 = socket(0x10, 0x803, 0x0) sendmsg$NBD_CMD_DISCONNECT(r3, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000180)={0x0}}, 0x0) getsockname$packet(r3, &(0x7f0000000100)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @broadcast}, &(0x7f00000002c0)=0x14) sendmsg$nl_route(r2, &(0x7f0000000040)={0x0, 0x2a9, &(0x7f0000000000)={&(0x7f0000000080)=ANY=[@ANYBLOB="48000000100005e7ffffff000000000000000000", @ANYRES32=r4, @ANYBLOB="000000000000000028001200090001007665746800000000180002001400010000000000", @ANYRES32=0x0, @ANYBLOB="0000b20000000000"], 0x48}}, 0x0) sendmsg$nl_route_sched(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000140)={&(0x7f00000003c0)=ANY=[@ANYBLOB="38000000240007050000004007a2a30005000000", @ANYRES32=r4, @ANYBLOB="00000000ffffffff000000000900010068667363000000000800020000000000"], 0x38}}, 0x0) sendmsg$nl_route_sched(r0, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000300)={&(0x7f00000004c0)=@newtfilter={0x4c, 0x2c, 0xd27, 0x0, 0x0, {0x0, 0x0, 0x0, r4, {}, {}, {0x8}}, [@filter_kind_options=@f_u32={{0x8, 0x1, 'u32\x00'}, {0x20, 0x2, [@TCA_U32_LINK={0x8, 0x3, 0x7}, @TCA_U32_SEL={0x14}]}}]}, 0x4c}}, 0x0) syzkaller login: [ 33.808042][ T8645] IPVS: ftp: loaded support on port[0] = 21 [ 33.865894][ T8645] chnl_net:caif_netlink_parms(): no params data found [ 33.898937][ T8645] bridge0: port 1(bridge_slave_0) entered blocking state [ 33.906014][ T8645] bridge0: port 1(bridge_slave_0) entered disabled state [ 33.914329][ T8645] device bridge_slave_0 entered promiscuous mode [ 33.922417][ T8645] bridge0: port 2(bridge_slave_1) entered blocking state [ 33.929450][ T8645] bridge0: port 2(bridge_slave_1) entered disabled state [ 33.937780][ T8645] device bridge_slave_1 entered promiscuous mode [ 33.953117][ T8645] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link 20:44:49 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000200)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x0, 0x0, 0x0, 0x0) ioctl$KVM_SET_NESTED_STATE(0xffffffffffffffff, 0x4080aebf, &(0x7f0000000440)={{0x0, 0x0, 0x80}, 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perf_event_open(&(0x7f0000000180)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 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, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) openat(0xffffffffffffffff, &(0x7f0000000000)='./file0\x00', 0x0, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) socket$inet6(0xa, 0x0, 0x0) bind$alg(0xffffffffffffffff, &(0x7f0000000000)={0x26, 'aead\x00', 0x0, 0x0, 'rfc4106-gcm-aesni\x00'}, 0x58) ioctl$LOOP_CTL_REMOVE(0xffffffffffffffff, 0x4c81, 0x0) syz_open_dev$vcsu(&(0x7f0000000040)='/dev/vcsu#\x00', 0x0, 0x80001) syz_genetlink_get_family_id$nl80211(0x0) sendmsg$NL80211_CMD_NEW_INTERFACE(0xffffffffffffffff, 0x0, 0x0) [ 33.963592][ T8645] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 33.993164][ T8645] team0: Port device team_slave_0 added [ 34.012125][ T8645] team0: Port device team_slave_1 added [ 34.033597][ T8645] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 34.040559][ T8645] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 34.092036][ T8645] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 34.108172][ T8799] IPVS: ftp: loaded support on port[0] = 21 [ 34.115614][ T8645] batman_adv: batadv0: Adding interface: batadv_slave_1 20:44:49 executing program 2: r0 = perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) fcntl$setstatus(r0, 0x4, 0x3800) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r3 = dup3(r2, r1, 0x0) ioctl$sock_SIOCSIFVLAN_ADD_VLAN_CMD(r1, 0x8983, &(0x7f0000000000)={0x0, 'batadv0\x00', {0x900}, 0x1ff}) r4 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='memory.events\x00', 0x7a05, 0x1700) pwrite64(r4, &(0x7f0000000400)="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", 0x200, 0x0) r5 = openat$autofs(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/autofs\x00', 0x2000, 0x0) ioctl$VIDIOC_G_EXT_CTRLS(r3, 0xc0205647, &(0x7f0000000200)={0x9c0000, 0x3ff, 0x81, r5, 0x0, &(0x7f00000001c0)={0x9909c8, 0xff, [], @value64=0xb938}}) r6 = perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) getsockopt$inet_sctp6_SCTP_MAX_BURST(0xffffffffffffffff, 0x84, 0x14, &(0x7f0000000100)=@assoc_value={0x0}, 0x0) semop(0x0, &(0x7f0000000240), 0x6) semctl$IPC_RMID(0x0, 0x0, 0x0) semctl$SEM_STAT(0x0, 0x0, 0x12, &(0x7f0000000240)=""/20) getsockopt$inet_sctp6_SCTP_GET_ASSOC_STATS(0xffffffffffffffff, 0x84, 0x70, &(0x7f00000005c0)={r7, @in, [0x0, 0x3, 0x0, 0x0, 0x0, 0x3, 0x8, 0x951, 0x800000000007ff, 0x0, 0x5, 0x0, 0x4, 0x0, 0xfffffffffffffffe]}, 0x0) getsockopt$inet_sctp_SCTP_PEER_ADDR_THLDS(r6, 0x84, 0x1f, &(0x7f0000000100)={r7, @in={{0x2, 0x4e23, @remote}}, 0xfffd, 0x1}, &(0x7f0000000040)=0x90) getsockopt$inet_sctp_SCTP_GET_LOCAL_ADDRS(r4, 0x84, 0x6d, &(0x7f0000000040)={r7, 0x2d, "7711054fdfa7c5b4e3b726f4eae1a2bbbee79c8ae33ff953638bc6f53b51a734ba7adc89e4b6cee146e4e9c8d2"}, &(0x7f0000000080)=0x35) r8 = socket$nl_generic(0x10, 0x3, 0x10) r9 = syz_genetlink_get_family_id$ethtool(&(0x7f0000000440)='ethtool\x00') sendmsg$ETHTOOL_MSG_STRSET_GET(r8, &(0x7f0000000780)={0x0, 0x0, &(0x7f0000000740)={&(0x7f0000000480)={0x18, r9, 0x703, 0x0, 0x0, {}, [@ETHTOOL_A_STRSET_HEADER={0x4}]}, 0x18}}, 0x0) [ 34.125369][ T8645] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 34.151828][ T8645] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 34.213371][ T8645] device hsr_slave_0 entered promiscuous mode [ 34.282019][ T8645] device hsr_slave_1 entered promiscuous mode 20:44:50 executing program 3: r0 = socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$mptcp(&(0x7f0000000280)='mptcp_pm\x00') sendmsg$MPTCP_PM_CMD_SET_LIMITS(r0, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000100)={0x1c, r1, 0x1, 0x0, 0x0, {}, [@MPTCP_PM_ATTR_RCV_ADD_ADDRS={0x8, 0x3, 0x9}]}, 0x1c}}, 0x0) [ 34.341461][ T8833] IPVS: ftp: loaded support on port[0] = 21 [ 34.373520][ T8799] chnl_net:caif_netlink_parms(): no params data found [ 34.489752][ T8799] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.501755][ T8799] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.509439][ T8799] device bridge_slave_0 entered promiscuous mode [ 34.527816][ T9074] IPVS: ftp: loaded support on port[0] = 21 [ 34.533808][ T8833] chnl_net:caif_netlink_parms(): no params data found [ 34.545369][ T8645] netdevsim netdevsim0 netdevsim0: renamed from eth0 20:44:50 executing program 4: r0 = socket(0x10, 0x3, 0x0) setsockopt$netlink_NETLINK_TX_RING(r0, 0x10e, 0xc, &(0x7f0000000000)={0xfff}, 0x10) write(r0, &(0x7f0000000180)="2000000012005f0214f9f4070000fbe40a0000000000", 0x3e5) recvmmsg(r0, &(0x7f0000006180)=[{{0x0, 0x0, 0x0}}], 0x1, 0x0, 0x0) [ 34.593302][ T8799] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.600337][ T8799] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.608712][ T8799] device bridge_slave_1 entered promiscuous mode [ 34.623308][ T8645] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 34.683060][ T8645] netdevsim netdevsim0 netdevsim2: renamed from eth2 20:44:50 executing program 5: r0 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_team(r0, 0x8933, &(0x7f0000000040)={'team0\x00', 0x0}) r2 = socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$team(&(0x7f0000000000)='team\x00') ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000140)={'team_slave_0\x00', 0x0}) sendmsg$TEAM_CMD_OPTIONS_SET(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000480)={0x5c, r3, 0x1, 0x0, 0x0, {0x1, 0x6c00000000000000}, [{{0x8, 0x1, r1}, {0x40, 0x2, 0x0, 0x1, [{0x3c, 0x1, @enabled={{{0x24, 0x1, 'enabled\x00'}, {0x5}, {0x4}}, {0x8, 0x6, r4}}}]}}]}, 0x5c}}, 0x0) [ 34.770821][ T9097] IPVS: ftp: loaded support on port[0] = 21 [ 34.776791][ T8645] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 34.830888][ T8645] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.837953][ T8645] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.845239][ T8645] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.852333][ T8645] bridge0: port 1(bridge_slave_0) entered forwarding state [ 34.875860][ T3919] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.883761][ T3919] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.904813][ T8833] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.913198][ T8833] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.920532][ T8833] device bridge_slave_0 entered promiscuous mode [ 34.928211][ T8799] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 34.946730][ T8799] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 34.962862][ T8833] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.969886][ T8833] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.978278][ T8833] device bridge_slave_1 entered promiscuous mode [ 34.994725][ T9139] IPVS: ftp: loaded support on port[0] = 21 [ 35.007118][ T8799] team0: Port device team_slave_0 added [ 35.021379][ T8799] team0: Port device team_slave_1 added [ 35.068933][ T8799] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 35.076071][ T8799] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 35.103888][ T8799] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 35.116395][ T8799] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 35.123756][ T8799] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 35.149853][ T8799] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 35.161810][ T8833] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 35.179415][ T8833] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 35.190088][ T9074] chnl_net:caif_netlink_parms(): no params data found [ 35.263094][ T8799] device hsr_slave_0 entered promiscuous mode [ 35.301649][ T8799] device hsr_slave_1 entered promiscuous mode [ 35.341358][ T8799] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 35.348902][ T8799] Cannot create hsr debugfs directory [ 35.374983][ T9097] chnl_net:caif_netlink_parms(): no params data found [ 35.411958][ T9074] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.419046][ T9074] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.434554][ T9074] device bridge_slave_0 entered promiscuous mode [ 35.446037][ T8833] team0: Port device team_slave_0 added [ 35.455638][ T9139] chnl_net:caif_netlink_parms(): no params data found [ 35.468980][ T8799] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 35.504441][ T8799] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 35.552395][ T9074] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.559433][ T9074] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.567386][ T9074] device bridge_slave_1 entered promiscuous mode [ 35.580715][ T8833] team0: Port device team_slave_1 added [ 35.593223][ T8799] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 35.633234][ T9074] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 35.650672][ T8833] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 35.658534][ T8833] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 35.684843][ T8833] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 35.697261][ T8645] 8021q: adding VLAN 0 to HW filter on device bond0 [ 35.707487][ T8799] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 35.742993][ T9074] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 35.755443][ T8833] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 35.763233][ T8833] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 35.789195][ T8833] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 35.814999][ T8645] 8021q: adding VLAN 0 to HW filter on device team0 [ 35.826215][ T3919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 35.834026][ T3919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 35.843361][ T9097] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.850374][ T9097] bridge0: port 1(bridge_slave_0) entered disabled state [ 35.859344][ T9097] device bridge_slave_0 entered promiscuous mode [ 35.868976][ T9097] bridge0: port 2(bridge_slave_1) entered blocking state [ 35.876122][ T9097] bridge0: port 2(bridge_slave_1) entered disabled state [ 35.883579][ T9097] device bridge_slave_1 entered promiscuous mode [ 35.901780][ T9097] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 35.920451][ T8378] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 35.929495][ T8378] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 35.937774][ T8378] bridge0: port 1(bridge_slave_0) entered blocking state [ 35.944976][ T8378] bridge0: port 1(bridge_slave_0) entered forwarding state [ 35.956556][ T9074] team0: Port device team_slave_0 added [ 35.970722][ T9074] team0: Port device team_slave_1 added [ 35.977128][ T9097] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 36.042490][ T8833] device hsr_slave_0 entered promiscuous mode [ 36.081485][ T8833] device hsr_slave_1 entered promiscuous mode [ 36.130984][ T8833] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 36.138534][ T8833] Cannot create hsr debugfs directory [ 36.158096][ T9097] team0: Port device team_slave_0 added [ 36.165892][ T9139] bridge0: port 1(bridge_slave_0) entered blocking state [ 36.173035][ T9139] bridge0: port 1(bridge_slave_0) entered disabled state [ 36.180335][ T9139] device bridge_slave_0 entered promiscuous mode [ 36.187830][ T9139] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.194953][ T9139] bridge0: port 2(bridge_slave_1) entered disabled state [ 36.202964][ T9139] device bridge_slave_1 entered promiscuous mode [ 36.209868][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 36.219211][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 36.228398][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 36.235430][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 36.245830][ T9074] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 36.252920][ T9074] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 36.279152][ T9074] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 36.290432][ T9097] team0: Port device team_slave_1 added [ 36.309082][ T9074] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 36.316255][ T9074] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 36.342464][ T9074] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 36.353806][ T8378] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 36.363525][ T9097] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 36.370469][ T9097] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 36.396522][ T9097] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 36.413968][ T9139] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 36.425217][ T9139] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 36.442441][ T9097] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 36.449376][ T9097] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 36.476309][ T9097] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 36.495428][ T3919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 36.572247][ T9074] device hsr_slave_0 entered promiscuous mode [ 36.621067][ T9074] device hsr_slave_1 entered promiscuous mode [ 36.660849][ T9074] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 36.668531][ T9074] Cannot create hsr debugfs directory [ 36.681456][ T3919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 36.689658][ T3919] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 36.698495][ T733] ================================================================== [ 36.706583][ T733] BUG: KCSAN: data-race in copy_process / copy_process [ 36.712945][ T3919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 36.713411][ T733] [ 36.722359][ T3919] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 36.723687][ T733] write to 0xffffffff8927a410 of 4 bytes by task 7 on cpu 1: [ 36.733930][ T3919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 36.738802][ T733] copy_process+0x2e84/0x3300 [ 36.747210][ T3919] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 36.751227][ T733] _do_fork+0xf1/0x660 [ 36.751237][ T733] kernel_thread+0x85/0xb0 [ 36.751248][ T733] call_usermodehelper_exec_work+0x4f/0x1b0 [ 36.751256][ T733] process_one_work+0x3e1/0x9a0 [ 36.751265][ T733] worker_thread+0x665/0xbe0 [ 36.751272][ T733] kthread+0x20d/0x230 [ 36.751281][ T733] ret_from_fork+0x1f/0x30 [ 36.751283][ T733] [ 36.751291][ T733] read to 0xffffffff8927a410 of 4 bytes by task 733 on cpu 0: [ 36.751300][ T733] copy_process+0xac4/0x3300 [ 36.751308][ T733] _do_fork+0xf1/0x660 [ 36.751316][ T733] kernel_thread+0x85/0xb0 [ 36.751324][ T733] call_usermodehelper_exec_work+0x4f/0x1b0 [ 36.751334][ T733] process_one_work+0x3e1/0x9a0 [ 36.751348][ T733] worker_thread+0x665/0xbe0 [ 36.761975][ T3919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 36.763065][ T733] kthread+0x20d/0x230 [ 36.763082][ T733] ret_from_fork+0x1f/0x30 [ 36.767768][ T3919] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 36.773327][ T733] [ 36.773329][ T733] Reported by Kernel Concurrency Sanitizer on: [ 36.773340][ T733] CPU: 0 PID: 733 Comm: kworker/u4:4 Not tainted 5.8.0-rc3-syzkaller #0 [ 36.773345][ T733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.773358][ T733] Workqueue: events_unbound call_usermodehelper_exec_work [ 36.773364][ T733] ================================================================== [ 36.773369][ T733] Kernel panic - not syncing: panic_on_warn set ... [ 36.773377][ T733] CPU: 0 PID: 733 Comm: kworker/u4:4 Not tainted 5.8.0-rc3-syzkaller #0 [ 36.773382][ T733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.773390][ T733] Workqueue: events_unbound call_usermodehelper_exec_work [ 36.773394][ T733] Call Trace: [ 36.773406][ T733] dump_stack+0x10f/0x19d [ 36.773414][ T733] panic+0x207/0x64a [ 36.773425][ T733] ? vprintk_emit+0x44a/0x4f0 [ 36.773450][ T733] kcsan_report+0x684/0x690 [ 36.783081][ T3919] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 36.786880][ T733] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 36.786895][ T733] ? copy_process+0xac4/0x3300 [ 36.964849][ T733] ? _do_fork+0xf1/0x660 [ 36.969062][ T733] ? kernel_thread+0x85/0xb0 [ 36.973621][ T733] ? call_usermodehelper_exec_work+0x4f/0x1b0 [ 36.979667][ T733] ? process_one_work+0x3e1/0x9a0 [ 36.984751][ T733] ? worker_thread+0x665/0xbe0 [ 36.989482][ T733] ? kthread+0x20d/0x230 [ 36.993694][ T733] ? ret_from_fork+0x1f/0x30 [ 36.998258][ T733] ? debug_smp_processor_id+0x18/0x20 [ 37.003611][ T733] ? copy_creds+0x280/0x350 [ 37.008088][ T733] ? copy_creds+0x280/0x350 [ 37.012560][ T733] kcsan_setup_watchpoint+0x453/0x4d0 [ 37.018161][ T733] ? copy_creds+0x280/0x350 [ 37.022639][ T733] copy_process+0xac4/0x3300 [ 37.027209][ T733] ? check_preempt_wakeup+0x1cb/0x370 [ 37.032547][ T733] ? proc_cap_handler+0x280/0x280 [ 37.037537][ T733] _do_fork+0xf1/0x660 [ 37.041583][ T733] ? check_preemption_disabled+0x51/0x140 [ 37.047266][ T733] ? proc_cap_handler+0x280/0x280 [ 37.052258][ T733] kernel_thread+0x85/0xb0 [ 37.056729][ T733] ? proc_cap_handler+0x280/0x280 [ 37.061721][ T733] call_usermodehelper_exec_work+0x4f/0x1b0 [ 37.067583][ T733] process_one_work+0x3e1/0x9a0 [ 37.072403][ T733] worker_thread+0x665/0xbe0 [ 37.076961][ T733] ? finish_task_switch+0x8b/0x270 [ 37.082044][ T733] ? process_one_work+0x9a0/0x9a0 [ 37.087046][ T733] kthread+0x20d/0x230 [ 37.091090][ T733] ? process_one_work+0x9a0/0x9a0 [ 37.096089][ T733] ? kthread_blkcg+0x80/0x80 [ 37.100660][ T733] ret_from_fork+0x1f/0x30 [ 37.106154][ T733] Kernel Offset: disabled [ 37.110459][ T733] Rebooting in 86400 seconds..