[ 42.744607][ T23] audit: type=1800 audit(1575433796.472:25): pid=8004 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 42.772545][ T23] audit: type=1800 audit(1575433796.472:26): pid=8004 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.821204][ T23] audit: type=1800 audit(1575433796.472:27): pid=8004 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.845510][ T23] audit: type=1800 audit(1575433796.482:28): pid=8004 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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 '10.128.0.190' (ECDSA) to the list of known hosts. 2019/12/04 04:30:08 fuzzer started 2019/12/04 04:30:10 dialing manager at 10.128.0.26:42111 2019/12/04 04:30:10 syscalls: 2689 2019/12/04 04:30:10 code coverage: enabled 2019/12/04 04:30:10 comparison tracing: enabled 2019/12/04 04:30:10 extra coverage: extra coverage is not supported by the kernel 2019/12/04 04:30:10 setuid sandbox: enabled 2019/12/04 04:30:10 namespace sandbox: enabled 2019/12/04 04:30:10 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 04:30:10 fault injection: enabled 2019/12/04 04:30:10 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 04:30:10 net packet injection: enabled 2019/12/04 04:30:10 net device setup: enabled 2019/12/04 04:30:10 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 04:30:10 devlink PCI setup: PCI device 0000:00:10.0 is not available 04:30:11 executing program 0: r0 = socket$inet6_sctp(0xa, 0x5, 0x84) setsockopt$inet_sctp6_SCTP_EVENTS(r0, 0x84, 0xb, &(0x7f0000000040)={0x0, 0x3}, 0xb) shutdown(r0, 0x0) getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f0000000000)={0x0, 0x10, &(0x7f00000002c0)=[@in={0x2, 0x0, @local}]}, &(0x7f0000000180)=0x10) r1 = socket$inet(0x2, 0x80001, 0x84) getsockopt$inet_sctp_SCTP_MAX_BURST(r1, 0x84, 0x14, &(0x7f0000000000)=@assoc_value={0x0}, &(0x7f0000000040)=0x8) getsockopt$inet_sctp6_SCTP_PR_ASSOC_STATUS(r0, 0x84, 0x7d, &(0x7f0000000280)={r2}, &(0x7f00000002c0)=0x18) 04:30:11 executing program 1: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000340)={0x15, 0x65, 0xffff, 0x8001, 0x8, '9P2000.L'}, 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000000)={0x18}, 0x18) write$FUSE_CREATE_OPEN(r2, &(0x7f0000000400)={0xa0}, 0xa0) mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f0000000180)='9p\x00', 0x0, &(0x7f0000000380)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[{@access_any='access=any'}]}}) chmod(&(0x7f00000000c0)='./file0\x00', 0x0) syzkaller login: [ 57.919850][ T8169] IPVS: ftp: loaded support on port[0] = 21 04:30:11 executing program 2: keyctl$instantiate(0xc, 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB='new '], 0x1, 0xfffffffffffffffd) r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) clone(0x2000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) add_key(&(0x7f0000000140)='encrypted\x00', &(0x7f0000000180)={'syz'}, &(0x7f0000000100), 0xca, 0xfffffffffffffffe) [ 58.065949][ T8169] chnl_net:caif_netlink_parms(): no params data found [ 58.085823][ T8171] IPVS: ftp: loaded support on port[0] = 21 [ 58.147831][ T8169] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.162368][ T8169] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.170367][ T8169] device bridge_slave_0 entered promiscuous mode [ 58.184276][ T8169] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.191406][ T8169] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.199253][ T8169] device bridge_slave_1 entered promiscuous mode [ 58.223423][ T8169] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.235958][ T8169] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.264428][ T8169] team0: Port device team_slave_0 added [ 58.271652][ T8169] team0: Port device team_slave_1 added 04:30:12 executing program 3: socketpair$unix(0x1, 0x40000000000001, 0x0, &(0x7f0000000140)={0xffffffffffffffff}) r1 = socket$inet_tcp(0x2, 0x1, 0x0) r2 = fcntl$dupfd(r0, 0x0, r1) r3 = openat$vhci(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/vhci\x00', 0x0) dup2(r2, r3) [ 58.395000][ T8169] device hsr_slave_0 entered promiscuous mode [ 58.453527][ T8169] device hsr_slave_1 entered promiscuous mode [ 58.558203][ T8174] IPVS: ftp: loaded support on port[0] = 21 [ 58.567811][ T8171] chnl_net:caif_netlink_parms(): no params data found [ 58.590739][ T8177] IPVS: ftp: loaded support on port[0] = 21 04:30:12 executing program 4: openat$cgroup_ro(0xffffffffffffffff, &(0x7f0000000140)='cpuacct.stat\x00', 0x0, 0x0) write(0xffffffffffffffff, &(0x7f0000000040)="0f42", 0x2) r0 = openat$kvm(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) write$P9_RRENAMEAT(0xffffffffffffffff, &(0x7f0000000080)={0x7}, 0x7) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) clock_getres(0x0, &(0x7f0000000000)) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) ioctl$KVM_SET_REGS(r2, 0x4090ae82, &(0x7f0000000500)={[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xfb]}) ioctl$KVM_RUN(r2, 0xae80, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) ioctl$KVM_SET_REGS(r2, 0x4090ae82, &(0x7f0000000380)) ioctl$KVM_RUN(r2, 0xae80, 0x0) [ 58.619772][ T8169] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.685670][ T8169] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.760241][ T8169] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.804203][ T8169] netdevsim netdevsim0 netdevsim3: renamed from eth3 04:30:12 executing program 5: r0 = syz_open_dev$sndpcmc(&(0x7f0000000040)='/dev/snd/pcmC#D#c\x00', 0x0, 0x0) ioctl$RTC_EPOCH_SET(r0, 0xc1004110, 0x400000) [ 58.864226][ T8179] IPVS: ftp: loaded support on port[0] = 21 [ 58.880207][ T8171] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.902375][ T8171] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.910203][ T8171] device bridge_slave_0 entered promiscuous mode [ 58.933491][ T8171] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.941167][ T8171] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.963221][ T8171] device bridge_slave_1 entered promiscuous mode [ 59.002117][ T8171] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.027818][ T8171] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.063150][ T8169] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.070278][ T8169] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.078014][ T8169] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.085111][ T8169] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.118488][ T8171] team0: Port device team_slave_0 added [ 59.125985][ T8171] team0: Port device team_slave_1 added [ 59.141873][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.150034][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.166232][ T8181] IPVS: ftp: loaded support on port[0] = 21 [ 59.224414][ T8171] device hsr_slave_0 entered promiscuous mode [ 59.272995][ T8171] device hsr_slave_1 entered promiscuous mode [ 59.322455][ T8171] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.342373][ T8174] chnl_net:caif_netlink_parms(): no params data found [ 59.396999][ T8171] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 59.448449][ T8177] chnl_net:caif_netlink_parms(): no params data found [ 59.485335][ T8171] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 59.535569][ T8171] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 59.584584][ T8177] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.591850][ T8177] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.600251][ T8177] device bridge_slave_0 entered promiscuous mode [ 59.610674][ T8177] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.619234][ T8177] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.627883][ T8177] device bridge_slave_1 entered promiscuous mode [ 59.652582][ T8177] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.661692][ T8171] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 59.709495][ T8177] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.720078][ T8174] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.728028][ T8174] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.735911][ T8174] device bridge_slave_0 entered promiscuous mode [ 59.778031][ T8174] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.787632][ T8174] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.795742][ T8174] device bridge_slave_1 entered promiscuous mode [ 59.807016][ T8179] chnl_net:caif_netlink_parms(): no params data found [ 59.825550][ T8177] team0: Port device team_slave_0 added [ 59.833479][ T8177] team0: Port device team_slave_1 added [ 59.876351][ T8179] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.885030][ T8179] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.893256][ T8179] device bridge_slave_0 entered promiscuous mode [ 59.902415][ T8174] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.912895][ T8179] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.920041][ T8179] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.928334][ T8179] device bridge_slave_1 entered promiscuous mode [ 59.995148][ T8177] device hsr_slave_0 entered promiscuous mode [ 60.053573][ T8177] device hsr_slave_1 entered promiscuous mode [ 60.092760][ T8177] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.104575][ T8174] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.128822][ T8179] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.174026][ T8174] team0: Port device team_slave_0 added [ 60.181606][ T8179] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.210459][ T8181] chnl_net:caif_netlink_parms(): no params data found [ 60.220984][ T8174] team0: Port device team_slave_1 added [ 60.258876][ T8169] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.272395][ T8179] team0: Port device team_slave_0 added [ 60.296387][ T8181] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.303918][ T8181] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.311460][ T8181] device bridge_slave_0 entered promiscuous mode [ 60.319923][ T8181] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.327398][ T8181] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.335419][ T8181] device bridge_slave_1 entered promiscuous mode [ 60.343572][ T8179] team0: Port device team_slave_1 added [ 60.361086][ T8171] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.375789][ T8169] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.385095][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.393892][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.419092][ T8171] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.436968][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.446707][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.455482][ T47] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.462596][ T47] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.470129][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.478004][ T47] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.489468][ T8177] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 60.574132][ T8174] device hsr_slave_0 entered promiscuous mode [ 60.622738][ T8174] device hsr_slave_1 entered promiscuous mode [ 60.672515][ T8174] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.686974][ T8181] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.697133][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.705893][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.714472][ T8183] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.721507][ T8183] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.729114][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.738111][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.746507][ T8183] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.753569][ T8183] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.761012][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.769977][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.778858][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.787850][ T8183] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.794909][ T8183] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.802528][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.810968][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.820469][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.828678][ T8177] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 60.883881][ T8177] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 60.923915][ T8177] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 61.004036][ T8179] device hsr_slave_0 entered promiscuous mode [ 61.055735][ T8179] device hsr_slave_1 entered promiscuous mode [ 61.092439][ T8179] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.103620][ T8181] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.125701][ T8181] team0: Port device team_slave_0 added [ 61.158940][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.167851][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.176501][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.186244][ T8181] team0: Port device team_slave_1 added [ 61.210498][ T8174] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 61.258504][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.268541][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.277402][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.344999][ T8181] device hsr_slave_0 entered promiscuous mode [ 61.382541][ T8181] device hsr_slave_1 entered promiscuous mode [ 61.442701][ T8181] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.459656][ T8174] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 61.500215][ T8179] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 61.544020][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.551879][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.560828][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.570036][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.578870][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.591885][ T8174] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 61.644729][ T8174] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 61.686588][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.697755][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.707588][ T8179] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.737977][ T8179] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 61.801856][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.810528][ T3008] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.824886][ T8179] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 61.870415][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.878917][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.887245][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.896037][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.908431][ T8169] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.928007][ T8171] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.938528][ T8181] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 61.994463][ T8181] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 62.025048][ T8181] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 62.074169][ T8181] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 62.144707][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.152148][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.176630][ T8169] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.215275][ T8171] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.236342][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.245417][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.261525][ T8177] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.369063][ T8181] 8021q: adding VLAN 0 to HW filter on device bond0 [ 167.372221][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 167.379004][ C0] rcu: 0-...!: (10499 ticks this GP) idle=136/1/0x4000000000000002 softirq=10847/10847 fqs=1 [ 167.389477][ C0] (t=10501 jiffies g=6513 q=131) [ 167.394499][ C0] rcu: rcu_preempt kthread starved for 10500 jiffies! g6513 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 167.406023][ C0] rcu: RCU grace-period kthread stack dump: [ 167.411913][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 167.419914][ C0] Call Trace: [ 167.423383][ C0] __schedule+0x9a0/0xcc0 [ 167.427716][ C0] schedule+0x181/0x210 [ 167.431865][ C0] schedule_timeout+0x14f/0x240 [ 167.436714][ C0] ? run_local_timers+0x120/0x120 [ 167.441728][ C0] rcu_gp_kthread+0xed8/0x1770 [ 167.447446][ C0] kthread+0x332/0x350 [ 167.451501][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 167.456594][ C0] ? kthread_blkcg+0xe0/0xe0 [ 167.461170][ C0] ret_from_fork+0x24/0x30 [ 167.465586][ C0] NMI backtrace for cpu 0 [ 167.469900][ C0] CPU: 0 PID: 8193 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 [ 167.478133][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 167.488184][ C0] Call Trace: [ 167.491453][ C0] [ 167.494294][ C0] dump_stack+0x1fb/0x318 [ 167.498614][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 167.503464][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 167.509608][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 167.515662][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 167.521630][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 167.527514][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 167.532618][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 167.537806][ C0] ? trace_hardirqs_off+0x74/0x80 [ 167.542819][ C0] update_process_times+0x12d/0x180 [ 167.548003][ C0] tick_sched_timer+0x263/0x420 [ 167.552842][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 167.558375][ C0] __hrtimer_run_queues+0x403/0x840 [ 167.563574][ C0] hrtimer_interrupt+0x38c/0xda0 [ 167.568516][ C0] ? debug_smp_processor_id+0x9/0x20 [ 167.573790][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 167.579507][ C0] apic_timer_interrupt+0xf/0x20 [ 167.584424][ C0] [ 167.587354][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x27/0x50 [ 167.593497][ C0] Code: 5d c3 cc 48 8b 04 24 65 48 8b 0c 25 c0 1d 02 00 65 8b 15 b8 81 8b 7e f7 c2 00 01 1f 00 75 2c 8b 91 80 13 00 00 83 fa 02 75 21 <48> 8b 91 88 13 00 00 48 8b 32 48 8d 7e 01 8b 89 84 13 00 00 48 39 [ 167.613098][ C0] RSP: 0018:ffffc900026ff720 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 167.621509][ C0] RAX: ffffffff81487326 RBX: ffffea00027fb580 RCX: ffff8880a0164040 [ 167.629467][ C0] RDX: 0000000000000002 RSI: 00000000fffffffc RDI: ffffea00027fb580 [ 167.637439][ C0] RBP: ffffc900026ff748 R08: 000000000003a768 R09: ffffed1012728ef7 [ 167.645396][ C0] R10: ffffed1012728ef7 R11: 0000000000000000 R12: ffff8880a977b420 [ 167.653440][ C0] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880939477a8 [ 167.661411][ C0] ? mod_memcg_page_state+0x16/0x190 [ 167.666686][ C0] ? mod_memcg_page_state+0x16/0x190 [ 167.671957][ C0] free_thread_stack+0x168/0x590 [ 167.676882][ C0] put_task_stack+0xa3/0x130 [ 167.681457][ C0] finish_task_switch+0x3f1/0x550 [ 167.686479][ C0] __schedule+0x9a8/0xcc0 [ 167.690807][ C0] preempt_schedule_irq+0xc1/0x140 [ 167.695934][ C0] retint_kernel+0x1b/0x2b [ 167.700358][ C0] RIP: 0010:debug_lockdep_rcu_enabled+0x0/0xe0 [ 167.706519][ C0] Code: 07 80 c1 03 38 c1 7c e3 48 c7 c7 f4 18 81 89 e8 66 f0 4e 00 eb d5 0f 1f 40 00 55 48 89 e5 e8 a7 b7 00 00 e8 a2 b8 00 00 5d c3 <55> 48 89 e5 41 57 41 56 53 48 c7 c0 5c c0 43 89 48 c1 e8 03 49 bf [ 167.726121][ C0] RSP: 0018:ffffc900026ff9a8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 167.734520][ C0] RAX: ffffffff8766a21d RBX: 0000000000000030 RCX: 0000000000040000 [ 167.742479][ C0] RDX: ffffc90001fd9000 RSI: 0000000000004bc6 RDI: 0000000000004bc7 [ 167.750440][ C0] RBP: ffffc900026ffa80 R08: ffffffff8766a1db R09: fffffbfff128b316 [ 167.758397][ C0] R10: fffffbfff128b316 R11: 0000000000000000 R12: 1ffff1101347c300 [ 167.766369][ C0] R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000001 [ 167.774433][ C0] ? sctp_hash_transport+0x100b/0x1600 [ 167.779877][ C0] ? sctp_hash_transport+0x104d/0x1600 [ 167.785330][ C0] ? sctp_hash_transport+0x1237/0x1600 [ 167.790784][ C0] ? jhash+0x750/0x750 [ 167.794855][ C0] ? sctp_hash_key+0x230/0x230 [ 167.799601][ C0] ? sctp_hash_obj+0x270/0x270 [ 167.804365][ C0] sctp_assoc_add_peer+0xb94/0x1600 [ 167.809559][ C0] sctp_connect_new_asoc+0x2a0/0x610 [ 167.814842][ C0] __sctp_connect+0x560/0x1180 [ 167.819614][ C0] sctp_getsockopt+0x961a/0x11770 [ 167.825682][ C0] ? rcu_lock_release+0xd/0x30 [ 167.830437][ C0] ? rcu_lock_release+0x21/0x30 [ 167.835275][ C0] ? __fget+0x4e6/0x510 [ 167.839426][ C0] sock_common_getsockopt+0x99/0xb0 [ 167.844621][ C0] __sys_getsockopt+0x24c/0x2b0 [ 167.849571][ C0] __x64_sys_getsockopt+0xbf/0xd0 [ 167.854588][ C0] do_syscall_64+0xf7/0x1c0 [ 167.859175][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 167.865056][ C0] RIP: 0033:0x45a679 [ 167.868939][ C0] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 167.888528][ C0] RSP: 002b:00007fb0ff4b4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 167.896926][ C0] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045a679 [ 167.904885][ C0] RDX: 000000000000006f RSI: 0000000000000084 RDI: 0000000000000003 [ 167.912842][ C0] RBP: 000000000075bf20 R08: 0000000020000180 R09: 0000000000000000 [ 167.920798][ C0] R10: 0000000020000000 R11: 0000000000000246 R12: 00007fb0ff4b56d4 [ 167.928842][ C0] R13: 00000000004ceac0 R14: 00000000004d6410 R15: 00000000ffffffff