[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 53.070507][ T27] audit: type=1800 audit(1578466956.506:25): pid=8663 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 53.098055][ T27] audit: type=1800 audit(1578466956.506:26): pid=8663 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 53.146812][ T27] audit: type=1800 audit(1578466956.506:27): pid=8663 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 '10.128.0.13' (ECDSA) to the list of known hosts. 2020/01/08 07:02:45 fuzzer started 2020/01/08 07:02:47 dialing manager at 10.128.0.26:35703 2020/01/08 07:02:47 syscalls: 2824 2020/01/08 07:02:47 code coverage: enabled 2020/01/08 07:02:47 comparison tracing: enabled 2020/01/08 07:02:47 extra coverage: enabled 2020/01/08 07:02:47 setuid sandbox: enabled 2020/01/08 07:02:47 namespace sandbox: enabled 2020/01/08 07:02:47 Android sandbox: /sys/fs/selinux/policy does not exist 2020/01/08 07:02:47 fault injection: enabled 2020/01/08 07:02:47 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/01/08 07:02:47 net packet injection: enabled 2020/01/08 07:02:47 net device setup: enabled 2020/01/08 07:02:47 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2020/01/08 07:02:47 devlink PCI setup: PCI device 0000:00:10.0 is not available 07:02:49 executing program 0: r0 = socket$inet6(0xa, 0x2, 0x0) setsockopt$sock_int(r0, 0x1, 0xf, &(0x7f0000f59ffc)=0x4, 0x4) bind$inet6(r0, &(0x7f0000000480)={0xa, 0x4e20, 0x0, @mcast1, 0x2}, 0x1c) r1 = socket(0x10, 0x2, 0x0) getsockopt$sock_cred(r1, 0x1, 0x11, &(0x7f0000caaffb)={0x0, 0x0}, &(0x7f0000cab000)=0xc) setfsuid(r2) r3 = socket$inet6(0xa, 0x2, 0x0) setsockopt$sock_int(r3, 0x1, 0xf, &(0x7f0000f59ffc)=0x4, 0x4) bind$inet6(r3, &(0x7f0000000480)={0xa, 0x4e20, 0x0, @mcast1={0xff, 0x1, [0x0, 0x7]}, 0x2}, 0x1c) 07:02:49 executing program 1: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = socket$inet(0x2, 0x3, 0x2) r3 = openat$ttynull(0xffffffffffffff9c, &(0x7f0000000100)='/dev/ttynull\x00', 0x0, 0x0) dup2(r2, r3) syzkaller login: [ 65.776652][ T8833] IPVS: ftp: loaded support on port[0] = 21 07:02:49 executing program 2: prctl$PR_SET_PTRACER(0x59616d61, 0xffffffffffffffff) clone(0x100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = gettid() wait4(0x0, 0x0, 0x80000002, 0x0) vmsplice(0xffffffffffffffff, &(0x7f00000000c0)=[{0x0}, {0x0}, {0x0}, {&(0x7f00000001c0)="6653070000053c07bc3376003639405cb4aed12f0000000000ae47a825d86800278dcff47d010000805ae64f8f36460234432479aed75d492b41fd983f79e651", 0x40}], 0x4, 0x0) ptrace$setopts(0x4206, r0, 0x0, 0x0) tkill(r0, 0x3c) ptrace$cont(0x18, r0, 0x0, 0x0) socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000280)={0xffffffffffffffff, 0xffffffffffffffff}) r3 = fcntl$dupfd(r2, 0x0, r1) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) ptrace$setregs(0xd, r0, 0x0, &(0x7f0000000080)) ptrace$cont(0x20, r0, 0x0, 0x0) [ 65.935673][ T8836] IPVS: ftp: loaded support on port[0] = 21 [ 65.978947][ T8833] chnl_net:caif_netlink_parms(): no params data found [ 66.101177][ T8833] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.112701][ T8833] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.127776][ T8833] device bridge_slave_0 entered promiscuous mode [ 66.146220][ T8833] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.154101][ T8833] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.162233][ T8833] device bridge_slave_1 entered promiscuous mode [ 66.167731][ T8838] IPVS: ftp: loaded support on port[0] = 21 [ 66.210595][ T8833] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.242533][ T8833] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 07:02:49 executing program 3: r0 = socket$inet_udp(0x2, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000000)={'bridge_slave_1\x00', 0x0}) sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000240)={0x0, 0x50000000000, &(0x7f0000000080)={&(0x7f0000000280)=ANY=[@ANYBLOB="7c00000024002f083f923db02579c0b105070500", @ANYRES32=r1, @ANYBLOB="00000060ffffffff000000f20a000100636f64656c00fdff4b000200080005000000000008000200000000000800050000000000080003000000000008000500000081ee070004000000000008000200000000000800010000000000a802040000000000f142179a35eceb8df34539fa53c90dde2aa8b0fa463d089a5e17bc79508509a388bee0927713eabb94c26dc83b601045e9c80604a79a4a9b48f11ecf5bf496f2acd115ad58c32553174f31ae7924553e6d53d8a4"], 0x7c}}, 0x0) r2 = socket(0x10, 0x80002, 0x0) sendmmsg$alg(r2, &(0x7f0000000140)=[{0x0, 0x0, &(0x7f0000000100), 0x0, &(0x7f0000000100)}], 0x492492492492805, 0x0) [ 66.301172][ T8836] chnl_net:caif_netlink_parms(): no params data found [ 66.319413][ T8833] team0: Port device team_slave_0 added [ 66.345000][ T8833] team0: Port device team_slave_1 added [ 66.471159][ T8833] device hsr_slave_0 entered promiscuous mode 07:02:49 executing program 4: socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = fcntl$dupfd(r1, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) prctl$PR_SET_SECCOMP(0x16, 0x2, &(0x7f0000000300)={0x2, &(0x7f00000001c0)=[{0x1}, {0x6, 0x0, 0x0, 0x50000}]}) [ 66.548851][ T8833] device hsr_slave_1 entered promiscuous mode [ 66.626514][ T8838] chnl_net:caif_netlink_parms(): no params data found [ 66.651729][ T8836] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.662191][ T8842] IPVS: ftp: loaded support on port[0] = 21 [ 66.666879][ T8836] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.675836][ T8836] device bridge_slave_0 entered promiscuous mode [ 66.721635][ T8836] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.732363][ T8836] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.740781][ T8836] device bridge_slave_1 entered promiscuous mode [ 66.824165][ T8836] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.839518][ T8844] IPVS: ftp: loaded support on port[0] = 21 [ 66.853464][ T8838] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.863378][ T8838] bridge0: port 1(bridge_slave_0) entered disabled state 07:02:50 executing program 5: r0 = memfd_create(&(0x7f0000000140)='$.6/%cpuset]\x00', 0x0) r1 = socket(0x10, 0x2, 0x0) getsockopt$sock_cred(r1, 0x1, 0x11, &(0x7f0000caaffb)={0x0, 0x0}, &(0x7f0000cab000)=0xc) setresuid(0x0, r2, 0x0) clone(0x100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) execveat(r0, &(0x7f0000000000)='\x00', 0x0, 0x0, 0x1000) [ 66.873540][ T8838] device bridge_slave_0 entered promiscuous mode [ 66.892804][ T8836] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.914348][ T8838] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.927619][ T8838] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.935913][ T8838] device bridge_slave_1 entered promiscuous mode [ 67.033825][ T8833] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.092140][ T8836] team0: Port device team_slave_0 added [ 67.111931][ T8838] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.122678][ T8833] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.190707][ T8833] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.238904][ T8836] team0: Port device team_slave_1 added [ 67.244871][ T8833] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.302510][ T8838] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.333247][ T8847] IPVS: ftp: loaded support on port[0] = 21 [ 67.367330][ T8842] chnl_net:caif_netlink_parms(): no params data found [ 67.378049][ T8838] team0: Port device team_slave_0 added [ 67.388433][ T8838] team0: Port device team_slave_1 added [ 67.429630][ T8836] device hsr_slave_0 entered promiscuous mode [ 67.467043][ T8836] device hsr_slave_1 entered promiscuous mode [ 67.537104][ T8836] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 67.544970][ T8836] Cannot create hsr debugfs directory [ 67.670106][ T8838] device hsr_slave_0 entered promiscuous mode [ 67.727190][ T8838] device hsr_slave_1 entered promiscuous mode [ 67.766892][ T8838] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 67.774489][ T8838] Cannot create hsr debugfs directory [ 67.783286][ T8842] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.791269][ T8842] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.799243][ T8842] device bridge_slave_0 entered promiscuous mode [ 67.809642][ T8842] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.816827][ T8842] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.824401][ T8842] device bridge_slave_1 entered promiscuous mode [ 67.848015][ T8842] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.872260][ T8844] chnl_net:caif_netlink_parms(): no params data found [ 67.881688][ T8842] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.945798][ T8842] team0: Port device team_slave_0 added [ 67.969800][ T8842] team0: Port device team_slave_1 added [ 68.030210][ T8844] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.039661][ T8844] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.047846][ T8844] device bridge_slave_0 entered promiscuous mode [ 68.060098][ T8844] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.068144][ T8844] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.075919][ T8844] device bridge_slave_1 entered promiscuous mode [ 68.141306][ T8836] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 68.199319][ T8836] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 68.262219][ T8836] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 68.378952][ T8842] device hsr_slave_0 entered promiscuous mode [ 68.427160][ T8842] device hsr_slave_1 entered promiscuous mode [ 68.466915][ T8842] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 68.474548][ T8842] Cannot create hsr debugfs directory [ 68.485249][ T8844] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.500490][ T8844] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.509882][ T8836] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 68.580276][ T8847] chnl_net:caif_netlink_parms(): no params data found [ 68.608359][ T8838] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 68.639992][ T8838] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 68.703608][ T8838] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 68.751314][ T8838] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 68.825729][ T8844] team0: Port device team_slave_0 added [ 68.836181][ T8844] team0: Port device team_slave_1 added [ 68.950277][ T8844] device hsr_slave_0 entered promiscuous mode [ 69.017764][ T8844] device hsr_slave_1 entered promiscuous mode [ 69.067742][ T8844] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 69.075353][ T8844] Cannot create hsr debugfs directory [ 69.091641][ T8833] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.105312][ T8847] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.112589][ T8847] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.121248][ T8847] device bridge_slave_0 entered promiscuous mode [ 69.130062][ T8847] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.138424][ T8847] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.146359][ T8847] device bridge_slave_1 entered promiscuous mode [ 69.208884][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 69.222107][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.239000][ T8847] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.270025][ T8833] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.283918][ T8847] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.300998][ T8842] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 69.355044][ T2797] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 69.365192][ T2797] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.374859][ T2797] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.382926][ T2797] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.405926][ T8836] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.421408][ T8842] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 69.462316][ T8842] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 69.520479][ T8842] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 69.578754][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 69.596216][ T8836] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.605365][ T8847] team0: Port device team_slave_0 added [ 69.614333][ T8847] team0: Port device team_slave_1 added [ 69.635125][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 69.644562][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.653717][ T2754] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.660805][ T2754] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.668691][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 69.678973][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 69.686591][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.694475][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 69.706949][ T2797] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 69.716160][ T2797] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.725869][ T2797] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.740449][ T8844] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 69.800395][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 69.809681][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.818696][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 69.828187][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.837314][ T2800] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.845180][ T2800] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.853529][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 69.910632][ T8847] device hsr_slave_0 entered promiscuous mode [ 69.947242][ T8847] device hsr_slave_1 entered promiscuous mode [ 69.987635][ T8847] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 69.995346][ T8847] Cannot create hsr debugfs directory [ 70.001368][ T8844] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 70.059374][ T8844] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 70.123716][ T2747] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 70.133545][ T2747] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.156608][ T8833] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 70.169383][ T8833] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.177727][ T8844] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 70.228876][ T8838] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.241140][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 70.251519][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.260404][ T2754] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.267517][ T2754] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.276166][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 70.285346][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.294474][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 70.304047][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 70.343190][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.351594][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.360352][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 70.369513][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.378786][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.417486][ T8833] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.432493][ T2797] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 70.441699][ T2797] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.470920][ T2747] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 70.480089][ T2747] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.490013][ T2747] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 70.499903][ T2747] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.532398][ T8838] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.543458][ T8836] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.556928][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 70.565642][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 70.579289][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 70.588036][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.607811][ T8842] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.638621][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 70.648506][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 70.657236][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 70.665825][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.675152][ T2800] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.682269][ T2800] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.690165][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 70.699086][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.707824][ T2800] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.715386][ T2800] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.723088][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 70.732284][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 70.740220][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 70.748124][ T2800] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 70.765322][ T8842] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.778413][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 70.786202][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.794733][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 70.803925][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 70.812937][ T2754] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.820235][ T2754] bridge0: port 1(bridge_slave_0) entered forwarding state [ 70.831775][ T2747] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 70.845831][ T8833] device veth0_vlan entered promiscuous mode [ 70.860619][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 70.875091][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 70.883839][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 70.892651][ T2754] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.900717][ T2754] bridge0: port 2(bridge_slave_1) entered forwarding state [ 70.914999][ T8844] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.933714][ T8833] device veth1_vlan entered promiscuous mode [ 70.942822][ T8847] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 70.969632][ T8847] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 71.009029][ T8847] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 71.063586][ T2743] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 71.071578][ T2743] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 71.079420][ T2743] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 71.086937][ T2743] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 71.095524][ T2743] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 71.104071][ T2743] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 71.113115][ T2743] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 71.121985][ T2743] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 71.149144][ T8847] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 71.198589][ T8836] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 71.205702][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 71.216380][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 71.227447][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 71.235248][ T2754] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 176.266699][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 176.273522][ C1] rcu: 1-...!: (10499 ticks this GP) idle=182/1/0x4000000000000002 softirq=13230/13230 fqs=0 [ 176.284019][ C1] (t=10501 jiffies g=7429 q=70) [ 176.288947][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g7429 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 176.300046][ C1] rcu: RCU grace-period kthread stack dump: [ 176.305926][ C1] rcu_preempt R running task 28984 10 2 0x80004000 [ 176.313836][ C1] Call Trace: [ 176.317131][ C1] __schedule+0x9a0/0xcc0 [ 176.321465][ C1] schedule+0x181/0x210 [ 176.325646][ C1] schedule_timeout+0x14f/0x240 [ 176.330515][ C1] ? run_local_timers+0x120/0x120 [ 176.335549][ C1] rcu_gp_kthread+0xed8/0x1770 [ 176.340330][ C1] kthread+0x332/0x350 [ 176.346562][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 176.351661][ C1] ? kthread_blkcg+0xe0/0xe0 [ 176.356276][ C1] ret_from_fork+0x24/0x30 [ 176.360702][ C1] NMI backtrace for cpu 1 [ 176.365023][ C1] CPU: 1 PID: 8802 Comm: udevd Not tainted 5.5.0-rc5-syzkaller #0 [ 176.373153][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 176.383204][ C1] Call Trace: [ 176.386478][ C1] [ 176.389325][ C1] dump_stack+0x1fb/0x318 [ 176.393648][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 176.398492][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 176.404634][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 176.410696][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 176.416667][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 176.422638][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 176.427834][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 176.433030][ C1] ? trace_hardirqs_off+0x74/0x80 [ 176.438046][ C1] update_process_times+0x12d/0x180 [ 176.443281][ C1] tick_sched_timer+0x263/0x420 [ 176.448146][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 176.453700][ C1] __hrtimer_run_queues+0x403/0x840 [ 176.458926][ C1] hrtimer_interrupt+0x38c/0xda0 [ 176.463986][ C1] ? debug_smp_processor_id+0x9/0x20 [ 176.469300][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 176.474929][ C1] apic_timer_interrupt+0xf/0x20 [ 176.479854][ C1] [ 176.482806][ C1] RIP: 0010:free_thread_stack+0x195/0x590 [ 176.488614][ C1] Code: 2e 00 74 08 4c 89 e7 e8 39 94 6a 00 49 8b 1c 24 48 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 1b 94 6a 00 <48> 8b 1b e9 82 ff ff ff e8 be 2b 2e 00 43 80 3c 2e 00 75 18 eb 1e [ 176.508206][ C1] RSP: 0018:ffffc90001e37b10 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 176.516604][ C1] RAX: 1ffff1101285db11 RBX: ffff8880942ed888 RCX: ffff88808a9ba4c0 [ 176.525090][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0001a7e700 [ 176.533070][ C1] RBP: ffffc90001e37b48 R08: 000000000003a728 R09: fffffbfff124248a [ 176.541030][ C1] R10: fffffbfff124248a R11: 0000000000000000 R12: ffff8880942ed920 [ 176.548991][ C1] R13: dffffc0000000000 R14: 1ffff1101285db24 R15: ffff888095ef96f8 [ 176.556977][ C1] put_task_stack+0xa3/0x130 [ 176.561562][ C1] finish_task_switch+0x3f1/0x550 [ 176.566582][ C1] __schedule+0x9a8/0xcc0 [ 176.570921][ C1] schedule+0x181/0x210 [ 176.575073][ C1] schedule_hrtimeout_range_clock+0x3c7/0x510 [ 176.581136][ C1] ? trace_hrtimer_expire_exit+0x2d0/0x2d0 [ 176.586938][ C1] schedule_hrtimeout_range+0x2a/0x40 [ 176.592308][ C1] ep_poll+0xa4d/0xe80 [ 176.596378][ C1] ? do_task_dead+0xc0/0xc0 [ 176.600875][ C1] ? __kasan_check_read+0x11/0x20 [ 176.605894][ C1] do_epoll_wait+0x1ee/0x260 [ 176.611291][ C1] __x64_sys_epoll_wait+0x9a/0xb0 [ 176.616318][ C1] do_syscall_64+0xf7/0x1c0 [ 176.620831][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 176.626712][ C1] RIP: 0033:0x7f19105b3943 [ 176.631119][ C1] Code: 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 83 3d b5 dc 2a 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 3b c4 00 00 48 89 04 24 [ 176.650717][ C1] RSP: 002b:00007ffc08114df8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 [ 176.659126][ C1] RAX: ffffffffffffffda RBX: 0000000001940250 RCX: 00007f19105b3943 [ 176.667086][ C1] RDX: 0000000000000004 RSI: 00007ffc08114ec0 RDI: 0000000000000007 [ 176.675042][ C1] RBP: 0000000000625500 R08: 00007ffc08114de0 R09: 00007ffc081cb0b8 [ 176.683001][ C1] R10: 000000000000ee42 R11: 0000000000000246 R12: 0000000001940ba0 [ 176.690987][ C1] R13: 00007ffc08115f17 R14: 0000000000000005 R15: 0000000001940250