Warning: Permanently added '10.128.1.20' (ECDSA) to the list of known hosts. 2020/01/08 03:33:00 fuzzer started 2020/01/08 03:33:03 dialing manager at 10.128.0.26:35703 2020/01/08 03:33:03 syscalls: 2824 2020/01/08 03:33:03 code coverage: enabled 2020/01/08 03:33:03 comparison tracing: enabled 2020/01/08 03:33:03 extra coverage: enabled 2020/01/08 03:33:03 setuid sandbox: enabled 2020/01/08 03:33:03 namespace sandbox: enabled 2020/01/08 03:33:03 Android sandbox: /sys/fs/selinux/policy does not exist 2020/01/08 03:33:03 fault injection: enabled 2020/01/08 03:33:03 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/01/08 03:33:03 net packet injection: enabled 2020/01/08 03:33:03 net device setup: enabled 2020/01/08 03:33:03 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2020/01/08 03:33:03 devlink PCI setup: PCI device 0000:00:10.0 is not available 03:33:04 executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) writev(r0, &(0x7f00000001c0)=[{&(0x7f0000000480)="390000001300034700bb65e1c3e4ffff06000000070000004500000025000000190004000400ad000200000000000006040000000000000000", 0x39}], 0x1) 03:33:04 executing program 1: pipe(&(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = socket$inet_udp(0x2, 0x2, 0x0) writev(r1, &(0x7f0000000200)=[{&(0x7f00000000c0)="580000001400ad", 0x7}], 0x1) sendmmsg$alg(0xffffffffffffffff, &(0x7f0000000180)=[{0x3, 0x300000000000000, &(0x7f0000000080)}], 0x1, 0x0) write$binfmt_elf64(r1, &(0x7f0000000740)=ANY=[@ANYBLOB="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"], 0xa) close(r2) socket(0x10, 0x3, 0x0) write(0xffffffffffffffff, &(0x7f0000000180)="2000008012005fff", 0x8) writev(r1, &(0x7f0000000600)=[{&(0x7f0000000380)="f98ac693ce6908", 0x7}], 0x1) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) r4 = dup(r3) ioctl$PERF_EVENT_IOC_ENABLE(r4, 0x8912, 0x400200) accept4$packet(0xffffffffffffffff, &(0x7f0000000240)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @link_local}, &(0x7f0000000180)=0x14, 0x0) write$binfmt_misc(r1, &(0x7f0000000140)=ANY=[], 0xfef0) splice(r0, 0x0, r2, 0x0, 0x80000001, 0x0) [ 60.255241][ T8408] IPVS: ftp: loaded support on port[0] = 21 [ 60.402841][ T8408] chnl_net:caif_netlink_parms(): no params data found [ 60.443452][ T8408] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.452114][ T8408] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.460046][ T8408] device bridge_slave_0 entered promiscuous mode [ 60.469908][ T8408] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.477124][ T8408] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.484942][ T8408] device bridge_slave_1 entered promiscuous mode [ 60.507160][ T8408] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.518593][ T8408] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.539793][ T8411] IPVS: ftp: loaded support on port[0] = 21 [ 60.541815][ T8408] team0: Port device team_slave_0 added 03:33:04 executing program 2: perf_event_open(&(0x7f000001d000)={0x0, 0x70, 0xad, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 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) syz_open_dev$media(0x0, 0x7, 0x0) mmap(&(0x7f0000ffd000/0x3000)=nil, 0x3000, 0x0, 0x11, 0xffffffffffffffff, 0x0) openat$loop_ctrl(0xffffffffffffff9c, 0x0, 0x0, 0x0) openat$kvm(0xffffffffffffff9c, 0x0, 0x0, 0x0) getsockopt$inet6_IPV6_IPSEC_POLICY(0xffffffffffffffff, 0x29, 0x22, 0x0, 0x0) r0 = perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 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) fchmod(r0, 0x0) stat(&(0x7f0000000140)='./file0\x00', &(0x7f0000000180)) getsockopt$sock_cred(0xffffffffffffffff, 0x1, 0x11, 0x0, 0x0) r1 = socket$unix(0x1, 0x5, 0x0) bind$unix(r1, &(0x7f0000003000)=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0xc) listen(r1, 0x0) r2 = socket$unix(0x1, 0x5, 0x0) connect(r2, &(0x7f0000931ff4)=@un=@file={0x1, '\xe9\x1fq\x89Y\x1e\x923aK\x00'}, 0xc) r3 = gettid() r4 = gettid() sendmmsg$unix(r2, &(0x7f0000003f40)=[{&(0x7f0000000040)=@abs, 0x6e, 0x0, 0x0, &(0x7f0000001bc0)=[@rights={{0x14, 0x1, 0x1, [r2]}}, @cred={{0x1c, 0x1, 0x2, {r3}}}, @rights={{0x14, 0x1, 0x1, [r1]}}, @cred={{0x1c, 0x1, 0x2, {r4}}}], 0x70}], 0xfd, 0x0) [ 60.554283][ T8408] team0: Port device team_slave_1 added [ 60.629868][ T8408] device hsr_slave_0 entered promiscuous mode 03:33:04 executing program 3: r0 = socket(0x10, 0x3, 0x0) ioctl$sock_ifreq(r0, 0x89f0, &(0x7f0000000080)={'ip_vti0\x00', @ifru_data=&(0x7f0000000000)="b06f31673d3da2b793d4f9a507e3c9133ba7ce8f5e6e538ecf8829b08f7f4aae"}) r1 = socket(0x10, 0x3, 0x0) poll(&(0x7f0000000000)=[{}, {}, {}], 0x2, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) r3 = dup(r2) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) ioctl$sock_ifreq(r1, 0x89f1, &(0x7f0000000080)={'ip_vti0\x00', @ifru_flags}) ioctl$sock_ifreq(r0, 0x89f2, &(0x7f0000000080)={'ip_vti0\x00', @ifru_flags}) [ 60.756388][ T8408] device hsr_slave_1 entered promiscuous mode [ 60.850110][ T8413] IPVS: ftp: loaded support on port[0] = 21 [ 60.931301][ T8408] netdevsim netdevsim0 netdevsim0: renamed from eth0 03:33:05 executing program 4: r0 = openat$ttynull(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/ttynull\x00', 0x0, 0x0) ioctl$TIOCGSOFTCAR(r0, 0x5406, &(0x7f0000000240)) [ 60.998835][ T8408] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 61.047785][ T8408] netdevsim netdevsim0 netdevsim2: renamed from eth2 03:33:05 executing program 5: socket$inet_udplite(0x2, 0x2, 0x88) mmap(&(0x7f0000011000/0x3000)=nil, 0x3000, 0x4, 0x10, 0xffffffffffffffff, 0x0) ioctl$UFFDIO_REGISTER(0xffffffffffffffff, 0xc020aa00, &(0x7f0000000300)={{&(0x7f0000011000/0x3000)=nil, 0x3000}, 0x1}) r0 = socket$inet6_sctp(0xa, 0x5, 0x84) getsockopt$inet_sctp6_SCTP_DELAYED_SACK(r0, 0x84, 0xf, &(0x7f0000013ff4)=@assoc_value, 0x0) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 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) r1 = syz_open_dev$dri(&(0x7f00000001c0)='/dev/dri/card#\x00', 0x1, 0x0) ioctl$DRM_IOCTL_MODE_SETCRTC(r1, 0xc06864a2, &(0x7f0000000000)={0x0, 0x0, 0x20}) [ 61.173741][ T8408] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 61.255046][ T8417] IPVS: ftp: loaded support on port[0] = 21 [ 61.259694][ T8408] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.268141][ T8408] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.275751][ T8408] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.282847][ T8408] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.321060][ T8415] IPVS: ftp: loaded support on port[0] = 21 [ 61.419155][ T2766] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.427093][ T2766] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.444248][ T8420] IPVS: ftp: loaded support on port[0] = 21 [ 61.458558][ T8411] chnl_net:caif_netlink_parms(): no params data found [ 61.519328][ T8413] chnl_net:caif_netlink_parms(): no params data found [ 61.563447][ T8413] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.570681][ T8413] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.578663][ T8413] device bridge_slave_0 entered promiscuous mode [ 61.588674][ T8413] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.595748][ T8413] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.603470][ T8413] device bridge_slave_1 entered promiscuous mode [ 61.624293][ T8408] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.663038][ T8413] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.683415][ T8411] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.693463][ T8411] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.701176][ T8411] device bridge_slave_0 entered promiscuous mode [ 61.719628][ T8413] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.733710][ T8417] chnl_net:caif_netlink_parms(): no params data found [ 61.755339][ T8411] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.763376][ T8411] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.772448][ T8411] device bridge_slave_1 entered promiscuous mode [ 61.815902][ T8411] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.833611][ T8411] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.853458][ T8413] team0: Port device team_slave_0 added [ 61.868328][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.876641][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.913467][ T8417] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.921177][ T8417] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.928922][ T8417] device bridge_slave_0 entered promiscuous mode [ 61.939038][ T8408] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.947535][ T8413] team0: Port device team_slave_1 added [ 61.953240][ T8417] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.961186][ T8417] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.968865][ T8417] device bridge_slave_1 entered promiscuous mode [ 61.983726][ T8411] team0: Port device team_slave_0 added [ 61.991382][ T8411] team0: Port device team_slave_1 added [ 62.057796][ T8411] device hsr_slave_0 entered promiscuous mode [ 62.116512][ T8411] device hsr_slave_1 entered promiscuous mode [ 62.156254][ T8411] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 62.163999][ T8411] Cannot create hsr debugfs directory [ 62.171974][ T8420] chnl_net:caif_netlink_parms(): no params data found [ 62.181580][ T8415] chnl_net:caif_netlink_parms(): no params data found [ 62.195555][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.204839][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.213730][ T26] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.220833][ T26] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.283803][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.292420][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.300942][ T2766] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.308051][ T2766] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.324931][ T8417] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.338684][ T8417] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.388773][ T8413] device hsr_slave_0 entered promiscuous mode [ 62.426489][ T8413] device hsr_slave_1 entered promiscuous mode [ 62.496217][ T8413] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 62.503808][ T8413] Cannot create hsr debugfs directory [ 62.510686][ T4009] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 62.519475][ T4009] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 62.528223][ T4009] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.537037][ T4009] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.545617][ T4009] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.584971][ T8415] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.593119][ T8415] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.600745][ T8415] device bridge_slave_0 entered promiscuous mode [ 62.615734][ T8408] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 62.626609][ T8408] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 62.652331][ T8417] team0: Port device team_slave_0 added [ 62.670366][ T2679] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.678844][ T2679] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.687470][ T2679] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.695654][ T2679] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.704179][ T2679] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.712338][ T2679] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.725180][ T2679] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.735256][ T8415] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.743564][ T8415] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.751205][ T8415] device bridge_slave_1 entered promiscuous mode [ 62.769571][ T8417] team0: Port device team_slave_1 added [ 62.777650][ T8420] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.784819][ T8420] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.793005][ T8420] device bridge_slave_0 entered promiscuous mode [ 62.824435][ T8415] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.834106][ T8420] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.841608][ T8420] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.849581][ T8420] device bridge_slave_1 entered promiscuous mode [ 62.870141][ T8411] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 62.918765][ T8411] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 62.970632][ T8415] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.994216][ T8411] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 63.053114][ T8411] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 63.110815][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 63.119242][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 63.139599][ T8415] team0: Port device team_slave_0 added [ 63.152340][ T8415] team0: Port device team_slave_1 added [ 63.172391][ T8420] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.183834][ T8420] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.205235][ T8408] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 63.259332][ T8417] device hsr_slave_0 entered promiscuous mode [ 63.306562][ T8417] device hsr_slave_1 entered promiscuous mode [ 63.366203][ T8417] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 63.373976][ T8417] Cannot create hsr debugfs directory [ 63.439239][ T8415] device hsr_slave_0 entered promiscuous mode [ 63.486587][ T8415] device hsr_slave_1 entered promiscuous mode [ 63.526220][ T8415] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 63.533813][ T8415] Cannot create hsr debugfs directory [ 63.541523][ T8420] team0: Port device team_slave_0 added [ 63.549301][ T8420] team0: Port device team_slave_1 added [ 63.555283][ T8413] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 63.601846][ T8413] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 63.667910][ T8413] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 63.808748][ T8420] device hsr_slave_0 entered promiscuous mode [ 63.846475][ T8420] device hsr_slave_1 entered promiscuous mode [ 63.896216][ T8420] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 63.903811][ T8420] Cannot create hsr debugfs directory [ 63.910026][ T8413] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 63.987619][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 63.996592][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 64.084619][ T8408] device veth0_vlan entered promiscuous mode [ 64.113078][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 64.122400][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 64.131716][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 64.142083][ T2766] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 64.173145][ T8411] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.187683][ T8408] device veth1_vlan entered promiscuous mode [ 64.244386][ T8417] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 64.308918][ T8417] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 64.350092][ T8411] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.361010][ T8415] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 64.401141][ T8415] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 64.457486][ T8417] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 169.436067][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 169.442895][ C1] rcu: 1-...!: (10499 ticks this GP) idle=496/1/0x4000000000000002 softirq=11848/11848 fqs=39 [ 169.453481][ C1] (t=10501 jiffies g=6321 q=78) [ 169.458413][ C1] rcu: rcu_preempt kthread starved for 10424 jiffies! g6321 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 169.469495][ C1] rcu: RCU grace-period kthread stack dump: [ 169.475374][ C1] rcu_preempt R running task 28984 10 2 0x80004000 [ 169.483261][ C1] Call Trace: [ 169.486546][ C1] __schedule+0x9a0/0xcc0 [ 169.490882][ C1] schedule+0x181/0x210 [ 169.495029][ C1] schedule_timeout+0x14f/0x240 [ 169.499868][ C1] ? run_local_timers+0x120/0x120 [ 169.504925][ C1] rcu_gp_kthread+0xed8/0x1770 [ 169.509705][ C1] kthread+0x332/0x350 [ 169.513767][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 169.518870][ C1] ? kthread_blkcg+0xe0/0xe0 [ 169.523454][ C1] ret_from_fork+0x24/0x30 [ 169.527996][ C1] NMI backtrace for cpu 1 [ 169.532328][ C1] CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 5.5.0-rc5-syzkaller #0 [ 169.540474][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 169.550529][ C1] Workqueue: rcu_gp process_srcu [ 169.555455][ C1] Call Trace: [ 169.558729][ C1] [ 169.561586][ C1] dump_stack+0x1fb/0x318 [ 169.565917][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 169.570754][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 169.576900][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 169.583305][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 169.589279][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 169.595158][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 169.600264][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 169.605453][ C1] ? trace_hardirqs_off+0x74/0x80 [ 169.610469][ C1] update_process_times+0x12d/0x180 [ 169.615657][ C1] tick_sched_timer+0x263/0x420 [ 169.620498][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 169.626032][ C1] __hrtimer_run_queues+0x403/0x840 [ 169.631273][ C1] hrtimer_interrupt+0x38c/0xda0 [ 169.636233][ C1] ? debug_smp_processor_id+0x9/0x20 [ 169.641518][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 169.647069][ C1] apic_timer_interrupt+0xf/0x20 [ 169.651992][ C1] [ 169.654922][ C1] RIP: 0010:free_thread_stack+0x16d/0x590 [ 169.660631][ C1] Code: c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 55 94 6a 00 48 8b 3b be fc ff ff ff e8 28 04 00 00 43 80 3c 2e 00 <74> 08 4c 89 e7 e8 39 94 6a 00 49 8b 1c 24 48 83 c3 08 48 89 d8 48 [ 169.680226][ C1] RSP: 0018:ffffc90000d8f958 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 169.688632][ C1] RAX: ffffffff814897d3 RBX: ffff888096174608 RCX: ffff8880a9a48480 [ 169.696597][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00024d42c0 [ 169.704559][ C1] RBP: ffffc90000d8f990 R08: 000000000003a728 R09: fffffbfff124248a [ 169.712517][ C1] R10: fffffbfff124248a R11: 0000000000000000 R12: ffff8880961746a0 [ 169.720479][ C1] R13: dffffc0000000000 R14: 1ffff11012c2e8d4 R15: ffff888090e113f8 [ 169.728449][ C1] ? mod_memcg_page_state+0x123/0x190 [ 169.733812][ C1] ? free_thread_stack+0x168/0x590 [ 169.738914][ C1] put_task_stack+0xa3/0x130 [ 169.743498][ C1] finish_task_switch+0x3f1/0x550 [ 169.748517][ C1] __schedule+0x9a8/0xcc0 [ 169.752844][ C1] ? ___preempt_schedule+0x16/0x18 [ 169.757944][ C1] preempt_schedule+0xdb/0x120 [ 169.762696][ C1] ___preempt_schedule+0x16/0x18 [ 169.767628][ C1] ? check_preemption_disabled+0x37/0x260 [ 169.773362][ C1] delay_tsc+0x63/0xf0 [ 169.778050][ C1] __const_udelay+0x5e/0x70 [ 169.782551][ C1] try_check_zero+0x6e/0x380 [ 169.787270][ C1] process_srcu+0x1b7/0xd20 [ 169.791794][ C1] process_one_work+0x7ef/0x10d0 [ 169.796833][ C1] worker_thread+0xc01/0x1630 [ 169.801527][ C1] kthread+0x332/0x350 [ 169.805588][ C1] ? rcu_lock_release+0x30/0x30 [ 169.810432][ C1] ? kthread_blkcg+0xe0/0xe0 [ 169.815016][ C1] ret_from_fork+0x24/0x30