[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 51.552452][ T23] audit: type=1800 audit(1578467950.186:25): pid=8314 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 51.580737][ T23] audit: type=1800 audit(1578467950.186:26): pid=8314 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 51.634457][ T23] audit: type=1800 audit(1578467950.186:27): pid=8314 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.38' (ECDSA) to the list of known hosts. 2020/01/08 07:19:20 fuzzer started 2020/01/08 07:19:22 dialing manager at 10.128.0.26:35703 2020/01/08 07:19:22 syscalls: 2824 2020/01/08 07:19:22 code coverage: enabled 2020/01/08 07:19:22 comparison tracing: enabled 2020/01/08 07:19:22 extra coverage: enabled 2020/01/08 07:19:22 setuid sandbox: enabled 2020/01/08 07:19:22 namespace sandbox: enabled 2020/01/08 07:19:22 Android sandbox: /sys/fs/selinux/policy does not exist 2020/01/08 07:19:22 fault injection: enabled 2020/01/08 07:19:22 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/01/08 07:19:22 net packet injection: enabled 2020/01/08 07:19:22 net device setup: enabled 2020/01/08 07:19:22 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2020/01/08 07:19:22 devlink PCI setup: PCI device 0000:00:10.0 is not available 07:19:23 executing program 0: bind$alg(0xffffffffffffffff, 0x0, 0x0) perf_event_open(&(0x7f0000000180)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x365f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8001, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0, 0x1}}, 0x0, 0x0, 0xffffffffffffffff, 0x0) rt_sigtimedwait(0x0, 0x0, &(0x7f0000000200)={0x0, 0x1c9c380}, 0x0) r0 = getpid() rt_tgsigqueueinfo(0x0, r0, 0x16, 0x0) ptrace(0xffffffffffffffff, 0x0) openat$dlm_plock(0xffffffffffffff9c, &(0x7f0000000040)='/dev/dlm_plock\x00', 0x8000, 0x0) r1 = syz_open_dev$video4linux(&(0x7f00000000c0)='/dev/v4l-subdev#\x00', 0x0, 0x0) ioctl$VIDIOC_SUBDEV_ENUM_FRAME_SIZE(r1, 0xc040564a, &(0x7f0000000000)={0x0, 0x0, 0x300e}) 07:19:23 executing program 1: recvmmsg(0xffffffffffffffff, &(0x7f0000003140)=[{{&(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @local}}}, 0xfffffffffffffc57, 0x0, 0x0, 0x0, 0x274}}], 0x1, 0x0, 0x0) perf_event_open(&(0x7f0000000240)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, 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, 0x0, 0xffffffffffffffff, 0x0) r0 = syz_open_procfs(0x0, &(0x7f0000000100)='net/igmp6\x00') preadv(r0, &(0x7f00000017c0), 0x315, 0x800000) syzkaller login: [ 64.699927][ T8481] IPVS: ftp: loaded support on port[0] = 21 [ 64.867778][ T8481] chnl_net:caif_netlink_parms(): no params data found [ 64.917818][ T8481] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.925956][ T8481] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.934970][ T8481] device bridge_slave_0 entered promiscuous mode [ 64.944381][ T8481] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.952658][ T8481] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.961799][ T8481] device bridge_slave_1 entered promiscuous mode 07:19:23 executing program 2: openat$hwrng(0xffffffffffffff9c, 0x0, 0x0, 0x0) ioctl$sock_inet_udp_SIOCINQ(0xffffffffffffffff, 0x541b, 0x0) openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000000)='./cgroup/syz0\x00', 0x200002, 0x0) ppoll(&(0x7f0000000000)=[{0xffffffffffffffff, 0x8}, {}, {0xffffffffffffffff, 0x140}, {}], 0x4, &(0x7f0000000040), 0x0, 0x0) prctl$PR_SET_MM_MAP(0x23, 0xe, 0x0, 0x0) r0 = inotify_init1(0x0) syz_open_dev$media(&(0x7f0000000140)='/dev/media#\x00', 0x1562, 0x20000) r1 = openat$ashmem(0xffffffffffffff9c, &(0x7f0000000040)='/dev/ashmem\x00', 0x0, 0x0) ioctl$ASHMEM_SET_SIZE(r1, 0x40087703, 0x0) mmap(&(0x7f0000701000/0x1000)=nil, 0x1000, 0x0, 0x12, r1, 0x0) ioctl$ASHMEM_SET_NAME(r1, 0x40087708, &(0x7f00000011c0)) getsockopt$inet_sctp6_SCTP_AUTH_ACTIVE_KEY(0xffffffffffffffff, 0x84, 0x18, 0x0, 0x0) pipe(&(0x7f0000000280)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$DRM_IOCTL_AGP_ENABLE(r2, 0x40086432, 0x0) fcntl$setown(r0, 0x8, 0xffffffffffffffff) fcntl$getownex(r0, 0x10, &(0x7f0000000100)={0x0, 0x0}) clone(0x2000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) process_vm_readv(r3, &(0x7f0000000380)=[{&(0x7f0000000340)=""/61, 0x3d}], 0x1, &(0x7f0000002540)=[{&(0x7f00000003c0)=""/63, 0x7ffff002}], 0x2, 0x0) pipe(&(0x7f0000000280)) [ 64.977304][ T8484] IPVS: ftp: loaded support on port[0] = 21 [ 65.054471][ T8481] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.074807][ T8481] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.118574][ T8481] team0: Port device team_slave_0 added [ 65.137706][ T8481] team0: Port device team_slave_1 added 07:19:23 executing program 3: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x81, 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, 0xf}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = open(0x0, 0x0, 0x0) r1 = socket$inet(0x2, 0x4000000000000001, 0x6) bind$inet(0xffffffffffffffff, &(0x7f0000000080)={0x2, 0x4e23, @dev}, 0x10) r2 = socket(0xa, 0x2, 0x0) setsockopt$EBT_SO_SET_ENTRIES(r2, 0x0, 0x80, &(0x7f0000000300)=@broute={'broute\x00', 0x20, 0x2, 0x0, [0x0, 0x0, 0x0, 0x0, 0x0, 0x200004c0], 0x0, 0x0, &(0x7f00000004c0)=ANY=[@ANYBLOB]}, 0x78) getsockname$packet(r2, &(0x7f0000000240)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @dev}, 0x0) sendto$inet(r1, 0x0, 0x0, 0x200007f9, &(0x7f0000000140)={0x2, 0x4e23, @dev={0xac, 0x14, 0x14, 0x1e}}, 0x206) setsockopt$SO_BINDTODEVICE(0xffffffffffffffff, 0x1, 0x19, &(0x7f0000000200)='sit0\x00', 0x10) r3 = syz_open_dev$loop(0x0, 0x0, 0x0) r4 = memfd_create(0x0, 0x0) pwritev(r4, 0x0, 0x0, 0x0) ioctl$LOOP_CHANGE_FD(r3, 0x4c00, 0xffffffffffffffff) move_pages(0x0, 0x2352, &(0x7f0000000180)=[&(0x7f0000ffe000/0x1000)=nil], 0x0, &(0x7f00000004c0)=[0x0, 0x0, 0x0, 0x0], 0x0) ioctl$BLKSECDISCARD(0xffffffffffffffff, 0x127d, 0x0) fcntl$setlease(0xffffffffffffffff, 0x400, 0x2) openat$cgroup_subtree(0xffffffffffffffff, &(0x7f0000000340)='cgroup.subtree_control\x00', 0x2, 0x0) ioctl$TCGETA(r0, 0x5405, 0x0) r5 = socket$inet(0x2, 0x4000000000000001, 0x0) r6 = openat$sequencer2(0xffffffffffffff9c, 0x0, 0x20000, 0x0) setsockopt$bt_rfcomm_RFCOMM_LM(r6, 0x12, 0x3, 0x0, 0x0) bind$inet(r5, &(0x7f0000000080)={0x2, 0x0, @dev}, 0x10) bind$inet(0xffffffffffffffff, 0x0, 0x0) sendto$inet(0xffffffffffffffff, 0x0, 0x0, 0x0, &(0x7f0000000140)={0x2, 0x0, @dev}, 0x10) ioctl$LOOP_CHANGE_FD(0xffffffffffffffff, 0x4c00, 0xffffffffffffffff) [ 65.178345][ T8486] IPVS: ftp: loaded support on port[0] = 21 [ 65.214265][ T8481] device hsr_slave_0 entered promiscuous mode [ 65.252138][ T8481] device hsr_slave_1 entered promiscuous mode [ 65.439100][ T8484] chnl_net:caif_netlink_parms(): no params data found 07:19:24 executing program 4: r0 = socket$inet6(0xa, 0x3, 0x4) connect$inet6(r0, &(0x7f0000000080)={0xa, 0x0, 0x0, @empty}, 0x1c) sendmmsg$inet6(r0, &(0x7f0000007e40)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f0000000400)=[@pktinfo={{0x24, 0x29, 0x32, {@empty}}}, @hoplimit={{0x14}}], 0x40}}], 0x1, 0x0) [ 65.488823][ T8489] IPVS: ftp: loaded support on port[0] = 21 [ 65.624428][ T8484] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.632116][ T8484] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.639972][ T8484] device bridge_slave_0 entered promiscuous mode [ 65.710258][ T8481] netdevsim netdevsim0 netdevsim0: renamed from eth0 07:19:24 executing program 5: pipe(&(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = socket$alg(0x26, 0x5, 0x0) bind$alg(r2, &(0x7f00000000c0)={0x26, 'hash\x00', 0x0, 0x0, 'cmac(aes)\x00'}, 0x58) r3 = accept4(r2, 0x0, 0x0, 0x0) write$binfmt_script(r1, &(0x7f0000000040)=ANY=[@ANYPTR], 0x4) setsockopt$ALG_SET_KEY(r2, 0x117, 0x1, &(0x7f0000000200)="ad56b6cc0400aeb995298992ea5400c2", 0x10) splice(r0, 0x0, r3, 0x0, 0x1f, 0x0) [ 65.764199][ T8484] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.779989][ T8484] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.799044][ T8484] device bridge_slave_1 entered promiscuous mode [ 65.814549][ T8481] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 65.885619][ T8481] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 65.943682][ T8481] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 65.983180][ T8486] chnl_net:caif_netlink_parms(): no params data found [ 65.996477][ T8493] IPVS: ftp: loaded support on port[0] = 21 [ 66.028562][ T8484] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.028847][ T8494] IPVS: ftp: loaded support on port[0] = 21 [ 66.064460][ T8484] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.138842][ T8484] team0: Port device team_slave_0 added [ 66.158516][ T8486] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.166081][ T8486] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.175361][ T8486] device bridge_slave_0 entered promiscuous mode [ 66.183954][ T8484] team0: Port device team_slave_1 added [ 66.189712][ T8486] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.196885][ T8486] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.204643][ T8486] device bridge_slave_1 entered promiscuous mode [ 66.222140][ T8489] chnl_net:caif_netlink_parms(): no params data found [ 66.293460][ T8484] device hsr_slave_0 entered promiscuous mode [ 66.351395][ T8484] device hsr_slave_1 entered promiscuous mode [ 66.430829][ T8484] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 66.438509][ T8484] Cannot create hsr debugfs directory [ 66.465293][ T8486] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.490422][ T8489] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.499381][ T8489] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.507774][ T8489] device bridge_slave_0 entered promiscuous mode [ 66.544521][ T8486] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.577263][ T8489] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.584538][ T8489] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.592674][ T8489] device bridge_slave_1 entered promiscuous mode [ 66.610033][ T8493] chnl_net:caif_netlink_parms(): no params data found [ 66.630610][ T8494] chnl_net:caif_netlink_parms(): no params data found [ 66.669136][ T8486] team0: Port device team_slave_0 added [ 66.681806][ T8486] team0: Port device team_slave_1 added [ 66.706269][ T8489] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.760503][ T8494] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.769269][ T8494] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.778079][ T8494] device bridge_slave_0 entered promiscuous mode [ 66.786624][ T8489] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.853407][ T8486] device hsr_slave_0 entered promiscuous mode [ 66.891178][ T8486] device hsr_slave_1 entered promiscuous mode [ 66.950878][ T8486] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 66.958499][ T8486] Cannot create hsr debugfs directory [ 66.975191][ T8494] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.983231][ T8494] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.991189][ T8494] device bridge_slave_1 entered promiscuous mode [ 66.999675][ T8489] team0: Port device team_slave_0 added [ 67.006019][ T8493] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.013900][ T8493] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.021842][ T8493] device bridge_slave_0 entered promiscuous mode [ 67.049100][ T8489] team0: Port device team_slave_1 added [ 67.056795][ T8493] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.063967][ T8493] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.072635][ T8493] device bridge_slave_1 entered promiscuous mode [ 67.097736][ T8494] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.126736][ T8494] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.145020][ T8493] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.202682][ T8489] device hsr_slave_0 entered promiscuous mode [ 67.241103][ T8489] device hsr_slave_1 entered promiscuous mode [ 67.280947][ T8489] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 67.288631][ T8489] Cannot create hsr debugfs directory [ 67.299499][ T8484] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 67.346015][ T8493] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.370291][ T8481] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.379167][ T8494] team0: Port device team_slave_0 added [ 67.385956][ T8484] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 67.438412][ T8484] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 67.485548][ T8484] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 67.543299][ T8494] team0: Port device team_slave_1 added [ 67.589020][ T8493] team0: Port device team_slave_0 added [ 67.603637][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.611942][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.623309][ T8481] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.646559][ T8493] team0: Port device team_slave_1 added [ 67.713955][ T8494] device hsr_slave_0 entered promiscuous mode [ 67.761220][ T8494] device hsr_slave_1 entered promiscuous mode [ 67.810790][ T8494] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 67.818386][ T8494] Cannot create hsr debugfs directory [ 67.832576][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 67.847128][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.855833][ T2897] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.862992][ T2897] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.883987][ T8486] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 67.953326][ T8486] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 68.023636][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 68.032117][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 68.040538][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.049164][ T2708] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.056811][ T2708] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.065548][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 68.074808][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 68.096649][ T8486] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 68.138364][ T8486] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 68.197458][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 68.206363][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.215025][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 68.224203][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.233195][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.293671][ T8493] device hsr_slave_0 entered promiscuous mode [ 68.351953][ T8493] device hsr_slave_1 entered promiscuous mode [ 68.410881][ T8493] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 68.418454][ T8493] Cannot create hsr debugfs directory [ 68.436427][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 68.446232][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.455045][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 68.463972][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.497836][ T8481] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.512488][ T8489] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 68.573681][ T8489] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 68.606501][ T8489] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 68.663582][ T8489] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 68.713719][ T8484] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.731606][ T8481] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.777194][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 68.785056][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 68.822602][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 68.833861][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 68.843002][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 68.850645][ T2699] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.881704][ T8484] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.893684][ T8494] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 68.945796][ T8493] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 69.016471][ T8494] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 69.063072][ T8493] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 69.116503][ T8481] device veth0_vlan entered promiscuous mode [ 69.127666][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 69.136578][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 69.145601][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 69.155408][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.163960][ T2708] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.171072][ T2708] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.179060][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 69.187253][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 69.195174][ T2708] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 69.203358][ T8494] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 69.252778][ T8493] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 69.295908][ T8493] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 69.357828][ T8481] device veth1_vlan entered promiscuous mode [ 69.372962][ T8494] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 69.423546][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 69.432165][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.440999][ T2897] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.448303][ T2897] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.455955][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 69.465020][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 69.486751][ T8486] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.508579][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 69.517368][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.526188][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 69.534933][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.544876][ T2897] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.580128][ T8486] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.609460][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 69.617677][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.626231][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 69.636398][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.645264][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 69.654378][ T2936] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 69.665493][ T8489] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.688561][ T8484] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.699417][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 69.708870][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.723608][ T2695] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.730739][ T2695] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.741437][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 69.750355][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.763611][ T2695] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.770732][ T2695] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.784016][ T2695] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 174.790664][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 174.797493][ C1] rcu: 1-...!: (1 GPs behind) idle=d22/1/0x4000000000000002 softirq=13169/13173 fqs=36 [ 174.807463][ C1] (t=10500 jiffies g=6353 q=57) [ 174.812393][ C1] rcu: rcu_preempt kthread starved for 10427 jiffies! g6353 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 174.823475][ C1] rcu: RCU grace-period kthread stack dump: [ 174.829371][ C1] rcu_preempt R running task 28984 10 2 0x80004000 [ 174.837298][ C1] Call Trace: [ 174.840586][ C1] __schedule+0x9a0/0xcc0 [ 174.844925][ C1] schedule+0x181/0x210 [ 174.849085][ C1] schedule_timeout+0x14f/0x240 [ 174.853953][ C1] ? run_local_timers+0x120/0x120 [ 174.859319][ C1] rcu_gp_kthread+0xed8/0x1770 [ 174.864089][ C1] kthread+0x332/0x350 [ 174.868150][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 174.873251][ C1] ? kthread_blkcg+0xe0/0xe0 [ 174.877831][ C1] ret_from_fork+0x24/0x30 [ 174.882247][ C1] NMI backtrace for cpu 1 [ 174.886567][ C1] CPU: 1 PID: 8481 Comm: syz-executor.0 Not tainted 5.5.0-rc5-syzkaller #0 [ 174.895130][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 174.905169][ C1] Call Trace: [ 174.908440][ C1] [ 174.911286][ C1] dump_stack+0x1fb/0x318 [ 174.915607][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 174.920445][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 174.926589][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 174.932649][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 174.938628][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 174.944593][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 174.949705][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 174.954895][ C1] ? trace_hardirqs_off+0x74/0x80 [ 174.959912][ C1] update_process_times+0x12d/0x180 [ 174.965103][ C1] tick_sched_timer+0x263/0x420 [ 174.969973][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 174.975535][ C1] __hrtimer_run_queues+0x403/0x840 [ 174.980746][ C1] hrtimer_interrupt+0x38c/0xda0 [ 174.985692][ C1] ? debug_smp_processor_id+0x9/0x20 [ 174.990972][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 174.996507][ C1] apic_timer_interrupt+0xf/0x20 [ 175.001435][ C1] [ 175.004365][ C1] RIP: 0010:free_thread_stack+0x124/0x590 [ 175.010071][ C1] Code: ff 48 c1 e8 06 48 83 e0 c0 48 bf 00 00 00 00 00 ea ff ff 48 01 c7 be 03 00 00 00 e8 86 91 61 00 e9 5d 04 00 00 e8 3c 2c 2e 00 <48> 89 df 31 f6 e8 02 8d 6f 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 73 [ 175.029834][ C1] RSP: 0018:ffffc90001e47bd0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 175.038389][ C1] RAX: ffffffff81489244 RBX: ffffea00024e0800 RCX: ffff88807db78040 [ 175.046364][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00024e0800 [ 175.054672][ C1] RBP: ffffc90001e47c08 R08: 000000000003a728 R09: ffffed10143d3ec1 [ 175.062633][ C1] R10: ffffed10143d3ec1 R11: 0000000000000000 R12: ffff8880a6fc2920 [ 175.070591][ C1] R13: dffffc0000000000 R14: 1ffff11014df8524 R15: ffff8880a1e9f5f8 [ 175.078569][ C1] ? free_thread_stack+0x124/0x590 [ 175.083677][ C1] put_task_stack+0xa3/0x130 [ 175.088255][ C1] finish_task_switch+0x3f1/0x550 [ 175.093289][ C1] __schedule+0x9a8/0xcc0 [ 175.097619][ C1] schedule+0x181/0x210 [ 175.101767][ C1] do_nanosleep+0x1d0/0x6c0 [ 175.106283][ C1] hrtimer_nanosleep+0x3a6/0x5b0 [ 175.111213][ C1] ? trace_hrtimer_expire_exit+0x2d0/0x2d0 [ 175.117011][ C1] __x64_sys_nanosleep+0x186/0x1d0 [ 175.122114][ C1] do_syscall_64+0xf7/0x1c0 [ 175.126622][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 175.132506][ C1] RIP: 0033:0x4593f0 [ 175.136401][ C1] Code: c0 5b 5d c3 66 0f 1f 44 00 00 8b 04 24 48 83 c4 18 5b 5d c3 66 0f 1f 44 00 00 83 3d 41 f5 61 00 00 75 14 b8 23 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 d4 d1 fb ff c3 48 83 ec 08 e8 ea 46 00 00 [ 175.156004][ C1] RSP: 002b:00007fff05169a58 EFLAGS: 00000246 ORIG_RAX: 0000000000000023 [ 175.164401][ C1] RAX: ffffffffffffffda RBX: 0000000000011053 RCX: 00000000004593f0 [ 175.172361][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fff05169a60 [ 175.180319][ C1] RBP: 0000000000000002 R08: 0000000000000001 R09: 000000000166c940 [ 175.188277][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 175.196258][ C1] R13: 00007fff05169ab0 R14: 000000000001104d R15: 00007fff05169ac0