[ 41.249040][ T25] audit: type=1800 audit(1575389693.949:27): pid=7940 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 41.284216][ T25] audit: type=1800 audit(1575389693.949:28): pid=7940 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. [ 42.018355][ T25] audit: type=1800 audit(1575389694.799:29): pid=7940 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 42.037516][ T25] audit: type=1800 audit(1575389694.799:30): pid=7940 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.79' (ECDSA) to the list of known hosts. 2019/12/03 16:15:04 fuzzer started 2019/12/03 16:15:06 dialing manager at 10.128.0.26:45711 2019/12/03 16:15:06 syscalls: 2689 2019/12/03 16:15:06 code coverage: enabled 2019/12/03 16:15:06 comparison tracing: enabled 2019/12/03 16:15:06 extra coverage: extra coverage is not supported by the kernel 2019/12/03 16:15:06 setuid sandbox: enabled 2019/12/03 16:15:06 namespace sandbox: enabled 2019/12/03 16:15:06 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 16:15:06 fault injection: enabled 2019/12/03 16:15:06 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 16:15:06 net packet injection: enabled 2019/12/03 16:15:06 net device setup: enabled 2019/12/03 16:15:06 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 16:15:06 devlink PCI setup: PCI device 0000:00:10.0 is not available 16:15:07 executing program 0: perf_event_open(&(0x7f0000000040)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x50d, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3ff, 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, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = socket$inet6(0xa, 0x803, 0x3) r1 = socket$inet(0x2, 0x4000000000000001, 0x0) socket$inet6_tcp(0xa, 0x1, 0x0) dup(0xffffffffffffffff) ioctl$EXT4_IOC_SETFLAGS(0xffffffffffffffff, 0x40086602, 0x0) setsockopt$inet_tcp_int(r1, 0x6, 0x80000000000002, &(0x7f00000005c0)=0x78, 0x4) prctl$PR_SET_MM_EXE_FILE(0x23, 0xd, 0xffffffffffffffff) setsockopt$inet_tcp_TCP_MD5SIG(r1, 0x6, 0xe, &(0x7f0000000280)={@in={{0x2, 0x0, @initdev={0xac, 0x1e, 0x1, 0x0}}}, 0x0, 0x2, 0x0, "a77760f5a7645bc43c241d69912dda0c63c2a66726f8cfafd6c8fe2c98de7ba44947a79015f0fe57917cb62a93987a938fdedfce7bbba4fec2d8a09c41fb233245f2604b9e07b8ab79ec15ef2818a179"}, 0xd8) bind$inet(r1, &(0x7f0000000180)={0x2, 0x4e23, @dev}, 0x10) prctl$PR_GET_ENDIAN(0x13, 0x0) connect$inet(r1, &(0x7f0000000040)={0x2, 0x4e23}, 0x10) dup3(r1, r0, 0x0) recvmsg(r0, &(0x7f0000000240)={0x0, 0x4000000000000000, &(0x7f0000000080)=[{&(0x7f0000003ac0)=""/4096, 0x1000}], 0x1, 0x0, 0x4f}, 0x100) write$binfmt_elf64(r1, &(0x7f0000002300)=ANY=[@ANYRES64], 0x1000001bd) 16:15:07 executing program 1: socketpair$unix(0x1, 0x1, 0x0, &(0x7f00000000c0)={0xffffffffffffffff}) r1 = socket$inet_udplite(0x2, 0x2, 0x88) r2 = fcntl$dupfd(r1, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) keyctl$set_reqkey_keyring(0x10, 0xffffffffffffffff) syzkaller login: [ 54.500017][ T8106] IPVS: ftp: loaded support on port[0] = 21 16:15:07 executing program 2: r0 = syz_open_dev$sndmidi(&(0x7f00000001c0)='/dev/snd/midiC#D#\x00', 0x2, 0x0) ioctl$SNDRV_RAWMIDI_IOCTL_INFO(r0, 0x810c5701, &(0x7f0000000200)) [ 54.650867][ T8108] IPVS: ftp: loaded support on port[0] = 21 [ 54.678846][ T8106] chnl_net:caif_netlink_parms(): no params data found [ 54.851840][ T8106] bridge0: port 1(bridge_slave_0) entered blocking state [ 54.859645][ T8106] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.867832][ T8106] device bridge_slave_0 entered promiscuous mode [ 54.882565][ T8112] IPVS: ftp: loaded support on port[0] = 21 16:15:07 executing program 3: r0 = socket$inet6_udp(0xa, 0x2, 0x0) connect$inet6(r0, &(0x7f0000000200)={0xa, 0x0, 0x0, @loopback}, 0x1c) r1 = socket$inet_udplite(0x2, 0x2, 0x88) ioctl(r1, 0x1000008912, &(0x7f0000000140)="0800a1695e1dcfe87b1071") setsockopt$inet6_group_source_req(0xffffffffffffffff, 0x29, 0x0, &(0x7f0000000000)={0x0, {{0xa, 0x0, 0x0, @rand_addr="901985496ab351837e75fb14591a7c00"}}, {{0xa, 0x0, 0x0, @rand_addr="6bff838e000400007cc537e67f2e2e5e"}}}, 0x108) getsockopt$inet6_buf(r0, 0x29, 0x30, &(0x7f0000000000)=""/40, &(0x7f0000001000)=0xfffffffffffffff9) [ 54.905298][ T8106] bridge0: port 2(bridge_slave_1) entered blocking state [ 54.912947][ T8106] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.920759][ T8106] device bridge_slave_1 entered promiscuous mode [ 54.943966][ T8108] chnl_net:caif_netlink_parms(): no params data found [ 54.986836][ T8106] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.004652][ T8106] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.069550][ T8108] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.093017][ T8108] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.100974][ T8108] device bridge_slave_0 entered promiscuous mode [ 55.125307][ T8106] team0: Port device team_slave_0 added [ 55.131209][ T8108] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.138698][ T8108] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.146877][ T8108] device bridge_slave_1 entered promiscuous mode [ 55.162342][ T8106] team0: Port device team_slave_1 added 16:15:08 executing program 4: r0 = socket$inet6(0xa, 0x5, 0x0) setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x1a, &(0x7f00000000c0)=ANY=[@ANYPTR=&(0x7f0000000000)=ANY=[], @ANYPTR, @ANYPTR, @ANYRES64], 0x4) getsockopt$inet_sctp6_SCTP_GET_PEER_ADDR_INFO(r0, 0x84, 0xf, &(0x7f0000000180)={0x0, @in={{0x2, 0x0, @multicast1}}}, &(0x7f0000000240)=0x98) [ 55.198994][ T8108] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.215725][ T8114] IPVS: ftp: loaded support on port[0] = 21 [ 55.286504][ T8106] device hsr_slave_0 entered promiscuous mode [ 55.354904][ T8106] device hsr_slave_1 entered promiscuous mode 16:15:08 executing program 5: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 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_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = socket$nl_generic(0x10, 0x3, 0x10) sendmsg$SEG6_CMD_GET_TUNSRC(0xffffffffffffffff, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000080)={0x24, 0x0, 0x0, 0x0, 0x0, {}, [@SEG6_ATTR_DSTLEN={0x8, 0x2, 0x4}, @SEG6_ATTR_HMACKEYID={0x8}]}, 0x24}}, 0x0) sendmsg$nl_generic(r0, &(0x7f0000000180)={0x0, 0x5, &(0x7f0000000100)={&(0x7f0000000040)={0xc7, 0x34, 0x829, 0x0, 0x0, {0x3, 0x9}, [@nested={0x18, 0x0, [@typed={0x3b, 0x1, @ipv6=@loopback={0xffff000000000000}}]}]}, 0xfde8}, 0x1, 0xffffff7f0e000000}, 0x0) [ 55.406264][ T8108] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.459155][ T8116] IPVS: ftp: loaded support on port[0] = 21 [ 55.528099][ T8108] team0: Port device team_slave_0 added [ 55.570220][ T8108] team0: Port device team_slave_1 added [ 55.582411][ T8112] chnl_net:caif_netlink_parms(): no params data found [ 55.599794][ T8119] IPVS: ftp: loaded support on port[0] = 21 [ 55.613937][ T8106] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 55.635222][ T8106] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 55.677919][ T8106] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 55.746455][ T8106] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 55.865533][ T8108] device hsr_slave_0 entered promiscuous mode [ 55.903232][ T8108] device hsr_slave_1 entered promiscuous mode [ 55.943089][ T8108] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.032397][ T8112] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.039999][ T8112] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.047692][ T8112] device bridge_slave_0 entered promiscuous mode [ 56.075607][ T8108] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 56.125420][ T8112] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.132499][ T8112] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.140439][ T8112] device bridge_slave_1 entered promiscuous mode [ 56.158513][ T8112] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.173873][ T8108] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 56.206970][ T8108] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 56.264804][ T8114] chnl_net:caif_netlink_parms(): no params data found [ 56.289773][ T8112] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.304795][ T8108] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 56.382731][ T8114] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.390323][ T8114] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.398470][ T8114] device bridge_slave_0 entered promiscuous mode [ 56.407049][ T8114] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.414152][ T8114] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.421747][ T8114] device bridge_slave_1 entered promiscuous mode [ 56.482665][ T8114] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.494016][ T8114] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.506224][ T8112] team0: Port device team_slave_0 added [ 56.516548][ T8112] team0: Port device team_slave_1 added [ 56.552716][ T8116] chnl_net:caif_netlink_parms(): no params data found [ 56.595729][ T8114] team0: Port device team_slave_0 added [ 56.604424][ T8106] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.654987][ T8112] device hsr_slave_0 entered promiscuous mode [ 56.723165][ T8112] device hsr_slave_1 entered promiscuous mode [ 56.793115][ T8112] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.805767][ T8114] team0: Port device team_slave_1 added [ 56.819787][ T8119] chnl_net:caif_netlink_parms(): no params data found [ 56.885205][ T8114] device hsr_slave_0 entered promiscuous mode [ 56.923164][ T8114] device hsr_slave_1 entered promiscuous mode [ 56.973474][ T8114] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.998902][ T8108] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.029995][ T8116] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.037827][ T8116] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.045889][ T8116] device bridge_slave_0 entered promiscuous mode [ 57.053852][ T8116] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.060906][ T8116] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.068708][ T8116] device bridge_slave_1 entered promiscuous mode [ 57.075941][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.085015][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.129040][ T8112] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 57.184337][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.192002][ T3107] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.207940][ T8106] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.219733][ T8116] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.231192][ T8108] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.238771][ T8112] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 57.304810][ T8119] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.311886][ T8119] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.319925][ T8119] device bridge_slave_0 entered promiscuous mode [ 57.327774][ T8114] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 57.386816][ T8116] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.407644][ T8116] team0: Port device team_slave_0 added [ 57.415080][ T8116] team0: Port device team_slave_1 added [ 57.428753][ T8112] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 57.494453][ T8119] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.501527][ T8119] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.512058][ T8119] device bridge_slave_1 entered promiscuous mode [ 57.520417][ T2952] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.531972][ T2952] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.540419][ T2952] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.547570][ T2952] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.558410][ T2952] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.567031][ T2952] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.575417][ T2952] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.582436][ T2952] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.590050][ T2952] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.598020][ T2952] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.606977][ T8114] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 57.746504][ T8116] device hsr_slave_0 entered promiscuous mode [ 57.803361][ T8116] device hsr_slave_1 entered promiscuous mode [ 57.863250][ T8116] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.870924][ T8112] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 57.943427][ T8114] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 57.995494][ T8114] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 58.034832][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.044216][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.052463][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.059542][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.067092][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.076760][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.085191][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.092236][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.128981][ T8116] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 58.186585][ T8119] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.199925][ T8119] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.214833][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.224511][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.232841][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.241504][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.249837][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.258508][ T8116] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 58.321272][ T8108] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 58.333090][ T8108] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.344690][ T8120] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.352360][ T8120] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.361586][ T8120] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.369995][ T8120] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.378444][ T8120] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.387182][ T8120] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.395536][ T8120] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.403798][ T8116] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 58.444672][ T8116] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 58.490027][ T8119] team0: Port device team_slave_0 added [ 58.497622][ T8119] team0: Port device team_slave_1 added [ 58.511811][ T8120] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.523575][ T8120] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 58.530945][ T8120] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 58.554488][ T8108] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 58.567444][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.576991][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.590843][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.599895][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.629812][ T8106] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 58.640648][ T8106] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.688793][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.697860][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.710854][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.719804][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.728485][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.737026][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.753032][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 163.702872][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 163.709739][ C1] rcu: 1-...!: (10499 ticks this GP) idle=6a2/1/0x4000000000000002 softirq=10580/10580 fqs=39 [ 163.720287][ C1] (t=10501 jiffies g=5937 q=218) [ 163.725299][ C1] rcu: rcu_preempt kthread starved for 10424 jiffies! g5937 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 163.736380][ C1] rcu: RCU grace-period kthread stack dump: [ 163.742348][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 163.750323][ C1] Call Trace: [ 163.753610][ C1] __schedule+0x9a0/0xcc0 [ 163.757943][ C1] schedule+0x181/0x210 [ 163.762089][ C1] schedule_timeout+0x14f/0x240 [ 163.766924][ C1] ? run_local_timers+0x120/0x120 [ 163.771940][ C1] rcu_gp_kthread+0xed8/0x1770 [ 163.776704][ C1] kthread+0x332/0x350 [ 163.780755][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 163.785851][ C1] ? kthread_blkcg+0xe0/0xe0 [ 163.790440][ C1] ret_from_fork+0x24/0x30 [ 163.794858][ C1] NMI backtrace for cpu 1 [ 163.799177][ C1] CPU: 1 PID: 8128 Comm: syz-executor.1 Not tainted 5.4.0-syzkaller #0 [ 163.807397][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 163.817457][ C1] Call Trace: [ 163.820739][ C1] [ 163.823603][ C1] dump_stack+0x1fb/0x318 [ 163.827923][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 163.832772][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 163.838915][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 163.844968][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 163.850937][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 163.856816][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 163.861921][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 163.867111][ C1] ? trace_hardirqs_off+0x74/0x80 [ 163.872126][ C1] update_process_times+0x12d/0x180 [ 163.877327][ C1] tick_sched_timer+0x263/0x420 [ 163.883051][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 163.888588][ C1] __hrtimer_run_queues+0x403/0x840 [ 163.893791][ C1] hrtimer_interrupt+0x38c/0xda0 [ 163.898733][ C1] ? debug_smp_processor_id+0x9/0x20 [ 163.904007][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 163.909539][ C1] apic_timer_interrupt+0xf/0x20 [ 163.914460][ C1] [ 163.917389][ C1] RIP: 0010:__memcg_kmem_uncharge+0x44/0x2e0 [ 163.923358][ C1] Code: fc ff df 4c 8d 77 38 4d 89 f5 49 c1 ed 03 41 80 7c 05 00 00 74 08 4c 89 f7 e8 d8 f4 fa ff 4d 8b 3e b8 01 00 00 00 89 d9 d3 e0 <4d> 85 ff 0f 84 bf 01 00 00 4c 39 3d 04 ce 8c 07 0f 84 6e 02 00 00 [ 163.942947][ C1] RSP: 0018:ffffc90002487980 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 163.951342][ C1] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 [ 163.959301][ C1] RDX: ffffc90007891000 RSI: 0000000000000000 RDI: ffffea0002345b80 [ 163.967257][ C1] RBP: ffffc900024879b0 R08: 000000000003a768 R09: ffffed101317bac7 [ 163.975217][ C1] R10: ffffed101317bac7 R11: 0000000000000000 R12: ffffea0002345b80 [ 163.983175][ C1] R13: 1ffffd4000468b77 R14: ffffea0002345bb8 R15: 0000000000000000 [ 163.991151][ C1] ? free_thread_stack+0x124/0x590 [ 163.996274][ C1] free_thread_stack+0x12e/0x590 [ 164.001229][ C1] put_task_stack+0xa3/0x130 [ 164.005813][ C1] finish_task_switch+0x3f1/0x550 [ 164.010835][ C1] __schedule+0x9a8/0xcc0 [ 164.015178][ C1] ? debug_smp_processor_id+0x9/0x20 [ 164.020462][ C1] schedule+0x181/0x210 [ 164.024642][ C1] schedule_preempt_disabled+0x13/0x20 [ 164.030206][ C1] mutex_optimistic_spin+0x445/0x480 [ 164.035533][ C1] __mutex_lock_common+0x2e7/0x2e10 [ 164.040726][ C1] ? rtnl_lock+0x17/0x20 [ 164.044966][ C1] ? __might_fault+0xf9/0x160 [ 164.049649][ C1] mutex_lock_nested+0x1b/0x30 [ 164.054419][ C1] rtnl_lock+0x17/0x20 [ 164.058490][ C1] sock_do_ioctl+0x11e/0x260 [ 164.063105][ C1] sock_ioctl+0x464/0x690 [ 164.067447][ C1] ? sock_poll+0x310/0x310 [ 164.071884][ C1] do_vfs_ioctl+0x70b/0x1a30 [ 164.076487][ C1] ? __fget+0x441/0x510 [ 164.080656][ C1] ? tomoyo_file_ioctl+0x23/0x30 [ 164.085613][ C1] ? security_file_ioctl+0xa1/0xd0 [ 164.090725][ C1] __x64_sys_ioctl+0xe3/0x120 [ 164.095420][ C1] do_syscall_64+0xf7/0x1c0 [ 164.100022][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 164.105920][ C1] RIP: 0033:0x45a679 [ 164.109816][ C1] 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 [ 164.129563][ C1] RSP: 002b:00007fe85cf57c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 164.137983][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a679 [ 164.145967][ C1] RDX: 0000000000400200 RSI: 0000000000008912 RDI: 0000000000000006 [ 164.153946][ C1] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 164.161906][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe85cf586d4 [ 164.169866][ C1] R13: 00000000004c44cb R14: 00000000004d9b48 R15: 00000000ffffffff