[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 44.448760][ T26] audit: type=1800 audit(1575375259.082:25): pid=8116 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 44.480123][ T26] audit: type=1800 audit(1575375259.082:26): pid=8116 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 44.519191][ T26] audit: type=1800 audit(1575375259.082:27): pid=8116 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 '10.128.1.40' (ECDSA) to the list of known hosts. 2019/12/03 12:14:29 fuzzer started 2019/12/03 12:14:31 dialing manager at 10.128.0.26:45711 2019/12/03 12:14:31 syscalls: 2689 2019/12/03 12:14:31 code coverage: enabled 2019/12/03 12:14:31 comparison tracing: enabled 2019/12/03 12:14:31 extra coverage: extra coverage is not supported by the kernel 2019/12/03 12:14:31 setuid sandbox: enabled 2019/12/03 12:14:31 namespace sandbox: enabled 2019/12/03 12:14:31 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 12:14:31 fault injection: enabled 2019/12/03 12:14:31 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 12:14:31 net packet injection: enabled 2019/12/03 12:14:31 net device setup: enabled 2019/12/03 12:14:31 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 12:14:31 devlink PCI setup: PCI device 0000:00:10.0 is not available 12:14:32 executing program 0: openat$uinput(0xffffffffffffff9c, 0x0, 0x2, 0x0) openat$null(0xffffffffffffff9c, &(0x7f0000000240)='/dev/null\x00', 0x0, 0x0) r0 = openat$autofs(0xffffffffffffff9c, &(0x7f0000000300)='/dev/autofs\x00', 0x0, 0x0) getsockopt$inet_sctp_SCTP_PEER_ADDR_PARAMS(0xffffffffffffff9c, 0x84, 0x9, &(0x7f0000000940)={0x0, @in6={{0xa, 0x4e21, 0xe, @initdev={0xfe, 0x88, [], 0x1, 0x0}}}, 0x0, 0x7}, 0x0) r1 = syz_open_procfs(0x0, &(0x7f0000000100)='setgroups\x00') write$P9_RSTATFS(r1, &(0x7f0000000640)={0x43, 0x9, 0x0, {0x2, 0x7, 0x3, 0x2, 0x0, 0x8000, 0x20, 0x400, 0xfffffffd}}, 0x43) syz_genetlink_get_family_id$tipc(&(0x7f00000002c0)='TIPC\x00') socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040)={0xffffffffffffffff, 0xffffffffffffffff}) r3 = dup(r2) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) getsockopt$inet_sctp_SCTP_RECVNXTINFO(r3, 0x84, 0x21, &(0x7f0000000540), &(0x7f00000006c0)=0x4) getpgrp(0x0) r4 = syz_open_procfs(0x0, &(0x7f0000000100)='setgroups\x00') ioctl$VHOST_SET_FEATURES(r4, 0x4008af00, &(0x7f0000000140)=0x1000000) r5 = open(&(0x7f0000000080)='.\x00', 0x0, 0x0) ioctl$EXT4_IOC_SETFLAGS(r5, 0x40086602, &(0x7f0000000000)=0x3000a) pidfd_send_signal(r0, 0x7, &(0x7f0000000480), 0x0) open(&(0x7f0000000180)='./file0\x00', 0x40, 0x1) clone(0x4007fc, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) execve(&(0x7f0000000440)='./file0\x00', &(0x7f0000000280)=[&(0x7f0000000580)='wlan1\x00', &(0x7f0000000600)='security.capability\x00'], &(0x7f0000000780)=[&(0x7f0000000740)='!\x00']) 12:14:32 executing program 1: r0 = syz_open_dev$evdev(&(0x7f0000000000)='/dev/input/event#\x00', 0x0, 0x0) r1 = dup(r0) ioctl$EVIOCGNAME(r1, 0x40284502, 0x0) syzkaller login: [ 58.269136][ T8279] IPVS: ftp: loaded support on port[0] = 21 12:14:33 executing program 2: r0 = userfaultfd(0x0) ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f00000000c0)={0xaa, 0x8}) ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000001fe2)={{&(0x7f0000011000/0x3000)=nil, 0x3000}, 0x1}) madvise(&(0x7f0000000000/0x600000)=nil, 0x602000, 0x8) ioctl$UFFDIO_ZEROPAGE(r0, 0xc020aa04, 0x0) [ 58.474419][ T8279] chnl_net:caif_netlink_parms(): no params data found [ 58.593050][ T8279] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.610841][ T8279] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.631057][ T8279] device bridge_slave_0 entered promiscuous mode [ 58.651976][ T8279] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.659075][ T8279] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.680910][ T8279] device bridge_slave_1 entered promiscuous mode 12:14:33 executing program 3: r0 = syz_init_net_socket$nfc_llcp(0x27, 0x2, 0x1) bind$nfc_llcp(r0, &(0x7f0000000000)={0x27, 0x0, 0x0, 0x0, 0x0, 0x0, "00f40c442848cb166b002ee8dc4da7ae20d7c965d4fab6ad71c03cb2aa506b39b663e1c4c87d263fc05a6a042b6feba7da240eb2ca83e630e3b925b24361dc", 0x1}, 0x60) r1 = syz_init_net_socket$nfc_llcp(0x27, 0x1, 0x1) bind$nfc_llcp(r1, &(0x7f0000000140)={0x27, 0x0, 0x0, 0x0, 0x0, 0x0, "6cb782e4ad88b89d1fd309169f44a72107130ee55d660510420aaa96759ecbc36eb9bb12b6124793608dd0e7316d1d4f4dbac39877e4ac714b7ecefa8a934a", 0x1}, 0x60) [ 58.739062][ T8283] IPVS: ftp: loaded support on port[0] = 21 [ 58.757814][ T8285] IPVS: ftp: loaded support on port[0] = 21 [ 58.765860][ T8279] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.785434][ T8279] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.884501][ T8279] team0: Port device team_slave_0 added [ 58.910012][ T8279] team0: Port device team_slave_1 added 12:14:33 executing program 4: unshare(0x400) r0 = userfaultfd(0x0) ioctl$UFFDIO_API(r0, 0xc018aa3f, &(0x7f0000000480)) ioctl$UFFDIO_REGISTER(r0, 0xc020aa00, &(0x7f0000000300)={{&(0x7f0000011000/0x3000)=nil, 0x3000}, 0x1}) r1 = userfaultfd(0x0) ioctl$UFFDIO_API(r1, 0xc018aa3f, &(0x7f0000000480)) ioctl$UFFDIO_REGISTER(r1, 0xc020aa00, &(0x7f0000000300)={{&(0x7f0000011000/0x3000)=nil, 0x3000}, 0x1}) [ 59.002947][ T8279] device hsr_slave_0 entered promiscuous mode [ 59.050583][ T8279] device hsr_slave_1 entered promiscuous mode [ 59.186973][ T8287] IPVS: ftp: loaded support on port[0] = 21 [ 59.220799][ T8283] chnl_net:caif_netlink_parms(): no params data found [ 59.256051][ T8285] chnl_net:caif_netlink_parms(): no params data found [ 59.294462][ T8291] IPVS: ftp: loaded support on port[0] = 21 12:14:33 executing program 5: r0 = syz_open_dev$vbi(&(0x7f0000000140)='/dev/vbi#\x00', 0x3, 0x2) ioctl$VIDIOC_G_PARM(r0, 0xc0cc5615, &(0x7f0000000040)={0x6, @output}) [ 59.324131][ T8279] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 59.413044][ T8279] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 59.473447][ T8279] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 59.572774][ T8279] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.651311][ T8285] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.658638][ T8285] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.666994][ T8285] device bridge_slave_0 entered promiscuous mode [ 59.674925][ T8283] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.682501][ T8283] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.691136][ T8283] device bridge_slave_0 entered promiscuous mode [ 59.705147][ T8283] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.712527][ T8283] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.720361][ T8283] device bridge_slave_1 entered promiscuous mode [ 59.731072][ T8285] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.738504][ T8285] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.747969][ T8285] device bridge_slave_1 entered promiscuous mode [ 59.771099][ T8285] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.804459][ T8285] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.812161][ T8293] IPVS: ftp: loaded support on port[0] = 21 [ 59.824681][ T8283] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.839378][ T8283] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.875612][ T8283] team0: Port device team_slave_0 added [ 59.886792][ T8283] team0: Port device team_slave_1 added [ 59.904846][ T8285] team0: Port device team_slave_0 added [ 59.952677][ T8283] device hsr_slave_0 entered promiscuous mode [ 59.991023][ T8283] device hsr_slave_1 entered promiscuous mode [ 60.060006][ T8283] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.070112][ T8285] team0: Port device team_slave_1 added [ 60.171737][ T8285] device hsr_slave_0 entered promiscuous mode [ 60.221849][ T8285] device hsr_slave_1 entered promiscuous mode [ 60.279991][ T8285] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.316238][ T8291] chnl_net:caif_netlink_parms(): no params data found [ 60.371761][ T8287] chnl_net:caif_netlink_parms(): no params data found [ 60.415731][ T8283] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 60.452108][ T8283] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 60.501114][ T8285] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 60.537021][ T8285] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 60.593733][ T8283] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 60.631752][ T8291] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.638848][ T8291] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.646681][ T8291] device bridge_slave_0 entered promiscuous mode [ 60.661704][ T8285] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 60.711604][ T8285] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 60.751622][ T8283] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 60.813247][ T8287] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.820991][ T8287] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.828836][ T8287] device bridge_slave_0 entered promiscuous mode [ 60.836402][ T8291] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.843877][ T8291] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.851796][ T8291] device bridge_slave_1 entered promiscuous mode [ 60.861506][ T8279] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.892125][ T8287] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.899203][ T8287] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.907790][ T8287] device bridge_slave_1 entered promiscuous mode [ 60.931670][ T8291] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.945459][ T8291] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.003697][ T8279] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.017089][ T8291] team0: Port device team_slave_0 added [ 61.031563][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.040854][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.072971][ T8291] team0: Port device team_slave_1 added [ 61.080618][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.089543][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.101686][ T2996] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.109089][ T2996] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.117682][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.127566][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.136508][ T2996] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.143635][ T2996] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.153909][ T8287] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.166644][ T8287] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.203711][ T8297] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.217044][ T8285] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.242962][ T8287] team0: Port device team_slave_0 added [ 61.283364][ T8291] device hsr_slave_0 entered promiscuous mode [ 61.341206][ T8291] device hsr_slave_1 entered promiscuous mode [ 61.380340][ T8291] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.388395][ T8293] chnl_net:caif_netlink_parms(): no params data found [ 61.418172][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.427954][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.436303][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.451141][ T8287] team0: Port device team_slave_1 added [ 61.473724][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.488777][ T8291] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 61.554503][ T8291] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.623858][ T8285] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.640865][ T8291] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 61.672875][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.682827][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.709599][ T8291] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 61.756918][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.765386][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.775035][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.784041][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.793305][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.802176][ T22] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.809524][ T22] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.863051][ T8287] device hsr_slave_0 entered promiscuous mode [ 61.911548][ T8287] device hsr_slave_1 entered promiscuous mode [ 61.950147][ T8287] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.980914][ T8293] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.988008][ T8293] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.996309][ T8293] device bridge_slave_0 entered promiscuous mode [ 62.004656][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 62.014746][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.023447][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.031847][ T2996] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.038948][ T2996] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.048355][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.057351][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.066696][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.075331][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.083784][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.094375][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.102757][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.111216][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.120656][ T2996] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.148598][ T8287] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 62.201954][ T8287] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 62.253167][ T8287] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 62.302733][ T8293] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.310065][ T8293] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.318067][ T8293] device bridge_slave_1 entered promiscuous mode [ 62.330991][ T8283] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.348878][ T8279] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.356910][ T8287] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 62.441507][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.450921][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.459347][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.469392][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.478945][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.488609][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.516683][ T8293] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.534181][ T8285] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.553100][ T8293] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.581410][ T8293] team0: Port device team_slave_0 added [ 62.591284][ T8293] team0: Port device team_slave_1 added [ 62.632947][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 62.644113][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.653748][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.663041][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.695527][ T8283] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.742610][ T8293] device hsr_slave_0 entered promiscuous mode [ 62.780295][ T8293] device hsr_slave_1 entered promiscuous mode [ 62.830102][ T8293] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.851271][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.858778][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.871374][ T8285] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.880466][ T8279] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.916218][ T8291] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.935847][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.954549][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.963194][ T8284] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.970287][ T8284] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.978254][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.990994][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.000051][ T8284] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.007293][ T8284] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.017228][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.025394][ T8284] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.046562][ T8291] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.095768][ T8287] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.108515][ T8294] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 63.129644][ T8294] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.137780][ T8294] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 168.109784][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 168.116631][ C1] rcu: 1-...!: (10499 ticks this GP) idle=942/1/0x4000000000000002 softirq=11519/11519 fqs=39 [ 168.127251][ C1] (t=10501 jiffies g=6533 q=163) [ 168.132449][ C1] rcu: rcu_preempt kthread starved for 10424 jiffies! g6533 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 168.143534][ C1] rcu: RCU grace-period kthread stack dump: [ 168.149417][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 168.157314][ C1] Call Trace: [ 168.160693][ C1] __schedule+0x9a0/0xcc0 [ 168.165022][ C1] schedule+0x181/0x210 [ 168.169190][ C1] schedule_timeout+0x14f/0x240 [ 168.174030][ C1] ? run_local_timers+0x120/0x120 [ 168.179049][ C1] rcu_gp_kthread+0xed8/0x1770 [ 168.183814][ C1] kthread+0x332/0x350 [ 168.187869][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 168.193024][ C1] ? kthread_blkcg+0xe0/0xe0 [ 168.197652][ C1] ret_from_fork+0x24/0x30 [ 168.202095][ C1] NMI backtrace for cpu 1 [ 168.206429][ C1] CPU: 1 PID: 8279 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 [ 168.214787][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 168.226073][ C1] Call Trace: [ 168.229357][ C1] [ 168.232208][ C1] dump_stack+0x1fb/0x318 [ 168.236534][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 168.241461][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 168.247612][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 168.253900][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 168.259880][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 168.265765][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 168.270876][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 168.276068][ C1] ? trace_hardirqs_off+0x74/0x80 [ 168.281116][ C1] update_process_times+0x12d/0x180 [ 168.286326][ C1] tick_sched_timer+0x263/0x420 [ 168.291166][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 168.296788][ C1] __hrtimer_run_queues+0x403/0x840 [ 168.302008][ C1] hrtimer_interrupt+0x38c/0xda0 [ 168.306963][ C1] ? debug_smp_processor_id+0x9/0x20 [ 168.312263][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 168.317802][ C1] apic_timer_interrupt+0xf/0x20 [ 168.324044][ C1] [ 168.326977][ C1] RIP: 0010:free_thread_stack+0x186/0x590 [ 168.332700][ C1] Code: 8b 3b be fc ff ff ff e8 28 04 00 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 09 a4 69 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 eb a3 69 00 48 8b 1b e9 82 ff ff [ 168.352321][ C1] RSP: 0018:ffffc90002097a28 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13 [ 168.360727][ C1] RAX: 1ffff1100d81a481 RBX: ffff88806c0d2408 RCX: ffff888096a74140 [ 168.369260][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00024a5540 [ 168.377236][ C1] RBP: ffffc90002097a60 R08: 000000000003a768 R09: ffffed101270970f [ 168.385212][ C1] R10: ffffed101270970f R11: 0000000000000000 R12: ffff88806c0d24a0 [ 168.393174][ C1] R13: dffffc0000000000 R14: 1ffff1100d81a494 R15: ffff88809384b868 [ 168.401183][ C1] ? free_thread_stack+0x168/0x590 [ 168.406338][ C1] put_task_stack+0xa3/0x130 [ 168.410922][ C1] finish_task_switch+0x3f1/0x550 [ 168.415960][ C1] __schedule+0x9a8/0xcc0 [ 168.420293][ C1] ? ___preempt_schedule+0x16/0x18 [ 168.425391][ C1] preempt_schedule+0xdb/0x120 [ 168.430141][ C1] ___preempt_schedule+0x16/0x18 [ 168.435098][ C1] _raw_spin_unlock_irq+0x77/0x80 [ 168.440132][ C1] pipe_write+0x507/0x1130 [ 168.444574][ C1] __vfs_write+0x5a1/0x740 [ 168.449002][ C1] vfs_write+0x275/0x590 [ 168.453244][ C1] ksys_write+0x117/0x220 [ 168.457565][ C1] __x64_sys_write+0x7b/0x90 [ 168.462149][ C1] do_syscall_64+0xf7/0x1c0 [ 168.466652][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 168.472531][ C1] RIP: 0033:0x414130 [ 168.476582][ C1] Code: b0 89 c8 f7 d8 eb ed b8 6e 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 3d 3d 43 66 00 00 75 14 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 c4 1b 00 00 c3 48 83 ec 08 e8 ca fc ff ff [ 168.496479][ C1] RSP: 002b:00007ffd3a099dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 168.504902][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000414130 [ 168.513227][ C1] RDX: 0000000000000004 RSI: 00007ffd3a099e10 RDI: 00000000000000f8 [ 168.521199][ C1] RBP: 0000000000715460 R08: 0000000000000000 R09: 0000000000000000 [ 168.529253][ C1] R10: 000000524f525245 R11: 0000000000000246 R12: 0000000000714de8 [ 168.537212][ C1] R13: 00007ffd3a099e10 R14: 0000000000000003 R15: 00007ffd3a099e20