[ 41.934842][ T25] audit: type=1800 audit(1575464415.281:26): pid=8009 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.005775][ T25] audit: type=1800 audit(1575464415.281:27): pid=8009 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.045536][ T25] audit: type=1800 audit(1575464415.291:28): pid=8009 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. [ 43.144339][ T25] audit: type=1800 audit(1575464416.501:29): pid=8009 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.61' (ECDSA) to the list of known hosts. 2019/12/04 13:00:25 fuzzer started 2019/12/04 13:00:27 dialing manager at 10.128.0.26:36481 2019/12/04 13:00:27 syscalls: 2691 2019/12/04 13:00:27 code coverage: enabled 2019/12/04 13:00:27 comparison tracing: enabled 2019/12/04 13:00:27 extra coverage: extra coverage is not supported by the kernel 2019/12/04 13:00:27 setuid sandbox: enabled 2019/12/04 13:00:27 namespace sandbox: enabled 2019/12/04 13:00:27 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 13:00:27 fault injection: enabled 2019/12/04 13:00:27 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 13:00:27 net packet injection: enabled 2019/12/04 13:00:27 net device setup: enabled 2019/12/04 13:00:27 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 13:00:27 devlink PCI setup: PCI device 0000:00:10.0 is not available 13:00:28 executing program 0: syz_mount_image$iso9660(&(0x7f0000000200)='iso9660\x00', &(0x7f0000000240)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f0000000980)={[{@mode={'mode', 0x3d, 0x100000000}}]}) 13:00:28 executing program 1: perf_event_open(&(0x7f0000000040)={0x2, 0x70, 0x3ea, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = openat$dlm_control(0xffffffffffffff9c, &(0x7f0000000100)='/dev/dlm-control\x00', 0x1, 0x0) write$9p(r0, &(0x7f0000000000)="0600000000000000c9b90003040000002a1ff7adf576f3790f68bc2c197cbf8d63735a09ab8383afd2de1a5587fe067fde18fa64249e1dabdd9514480a16f3733d18f833b3aacfcf04f7b0bdd78687423a6bff51b9f9218a249e3d00"/104, 0xb3) syzkaller login: [ 55.235429][ T8174] IPVS: ftp: loaded support on port[0] = 21 [ 55.400457][ T8174] chnl_net:caif_netlink_parms(): no params data found [ 55.429937][ T8177] IPVS: ftp: loaded support on port[0] = 21 13:00:28 executing program 2: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = socket$nl_generic(0x10, 0x3, 0x10) sendmsg$nl_generic(r2, &(0x7f0000000000)={0x0, 0x296, &(0x7f0000000040)={&(0x7f0000000080)={0x24, 0x33, 0x119, 0x0, 0x0, {0x2, 0xf}, [@nested={0xfffffffffffffff5}, @nested={0xc, 0x1, [@typed={0x8, 0x20000016, @ipv4=@rand_addr=0x7}]}]}, 0x24}}, 0x0) [ 55.462747][ T8174] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.476241][ T8174] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.487240][ T8174] device bridge_slave_0 entered promiscuous mode [ 55.507984][ T8174] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.517385][ T8174] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.525627][ T8174] device bridge_slave_1 entered promiscuous mode [ 55.574927][ T8174] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.614758][ T8174] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 13:00:29 executing program 3: r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000000)={0x26, 'skcipher\x00', 0x0, 0x0, 'salsa20\x00'}, 0x58) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000100)="71e67a111fde54fe46b904832c8fff73", 0x10) r1 = accept4$alg(r0, 0x0, 0x0, 0x0) write$binfmt_script(r1, &(0x7f0000000140)=ANY=[@ANYRESDEC], 0x14) r2 = socket$inet6_tcp(0xa, 0x1, 0x0) r3 = fcntl$dupfd(r2, 0x0, r2) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) read(r1, &(0x7f0000000380)=""/225, 0xfffffd0d) [ 55.676229][ T8174] team0: Port device team_slave_0 added [ 55.688952][ T8177] chnl_net:caif_netlink_parms(): no params data found [ 55.709441][ T8174] team0: Port device team_slave_1 added [ 55.839392][ T8174] device hsr_slave_0 entered promiscuous mode 13:00:29 executing program 4: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = dup(r0) getsockopt$IP_VS_SO_GET_DESTS(r1, 0x0, 0x487, &(0x7f0000000080)=""/4096, &(0x7f0000001080)=0x1000) [ 55.905500][ T8174] device hsr_slave_1 entered promiscuous mode [ 55.961741][ T8180] IPVS: ftp: loaded support on port[0] = 21 [ 56.000831][ T8177] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.013114][ T8177] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.023304][ T8177] device bridge_slave_0 entered promiscuous mode [ 56.047758][ T8182] IPVS: ftp: loaded support on port[0] = 21 [ 56.062138][ T8177] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.070687][ T8177] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.080414][ T8177] device bridge_slave_1 entered promiscuous mode 13:00:29 executing program 5: bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000280)={&(0x7f0000000640)={{0xeb9f, 0x1, 0x0, 0x18, 0x22, 0x0, 0x0, 0x2}}, &(0x7f0000000340)=""/142, 0x1a, 0x8e, 0x1}, 0x20) [ 56.143834][ T8174] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.209215][ T8174] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.270932][ T8177] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.284574][ T8184] IPVS: ftp: loaded support on port[0] = 21 [ 56.296282][ T8174] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.333165][ T8177] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.353527][ T8174] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.398236][ T8186] IPVS: ftp: loaded support on port[0] = 21 [ 56.414386][ T8177] team0: Port device team_slave_0 added [ 56.440150][ T8177] team0: Port device team_slave_1 added [ 56.481335][ T8180] chnl_net:caif_netlink_parms(): no params data found [ 56.538286][ T8180] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.545817][ T8180] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.553472][ T8180] device bridge_slave_0 entered promiscuous mode [ 56.607798][ T8177] device hsr_slave_0 entered promiscuous mode [ 56.675562][ T8177] device hsr_slave_1 entered promiscuous mode [ 56.725284][ T8177] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.748278][ T8180] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.755853][ T8180] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.763571][ T8180] device bridge_slave_1 entered promiscuous mode [ 56.798288][ T8182] chnl_net:caif_netlink_parms(): no params data found [ 56.826651][ T8180] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.874009][ T8177] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 56.928055][ T8180] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.949911][ T8184] chnl_net:caif_netlink_parms(): no params data found [ 56.964382][ T8177] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 57.002971][ T8182] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.010274][ T8182] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.018486][ T8182] device bridge_slave_0 entered promiscuous mode [ 57.027377][ T8182] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.034441][ T8182] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.042374][ T8182] device bridge_slave_1 entered promiscuous mode [ 57.059813][ T8177] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 57.110518][ T8177] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 57.191281][ T8184] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.198706][ T8184] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.207519][ T8184] device bridge_slave_0 entered promiscuous mode [ 57.218398][ T8180] team0: Port device team_slave_0 added [ 57.229291][ T8174] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.241104][ T8182] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.256082][ T8184] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.263164][ T8184] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.271827][ T8184] device bridge_slave_1 entered promiscuous mode [ 57.279782][ T8180] team0: Port device team_slave_1 added [ 57.315949][ T8182] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.343591][ T8184] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.372996][ T8184] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.390955][ T8186] chnl_net:caif_netlink_parms(): no params data found [ 57.410250][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.418790][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.429512][ T8174] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.440651][ T8182] team0: Port device team_slave_0 added [ 57.451511][ T8182] team0: Port device team_slave_1 added [ 57.474861][ T8184] team0: Port device team_slave_0 added [ 57.486529][ T8184] team0: Port device team_slave_1 added [ 57.557687][ T8180] device hsr_slave_0 entered promiscuous mode [ 57.595370][ T8180] device hsr_slave_1 entered promiscuous mode [ 57.645155][ T8180] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.737059][ T8182] device hsr_slave_0 entered promiscuous mode [ 57.765489][ T8182] device hsr_slave_1 entered promiscuous mode [ 57.805272][ T8182] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.819189][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.828665][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.837143][ T3080] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.844281][ T3080] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.852849][ T3080] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.906896][ T8184] device hsr_slave_0 entered promiscuous mode [ 57.965437][ T8184] device hsr_slave_1 entered promiscuous mode [ 58.005260][ T8184] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.013857][ T8186] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.021780][ T8186] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.029816][ T8186] device bridge_slave_0 entered promiscuous mode [ 58.042725][ T8186] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.055285][ T8186] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.062909][ T8186] device bridge_slave_1 entered promiscuous mode [ 58.107824][ T8177] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.119397][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.128790][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.137264][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.144309][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.151884][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.160759][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.169672][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.178265][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.197418][ T8180] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 58.231146][ T8180] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 58.279028][ T8182] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 58.326660][ T8182] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 58.366474][ T8191] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.374889][ T8191] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.383820][ T8191] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.399915][ T8174] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 58.412711][ T8174] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.427530][ T8186] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.437300][ T8180] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.478876][ T8182] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 58.538731][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.547290][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.556286][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.564495][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.572783][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.580755][ T8184] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 58.626717][ T8184] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 58.667804][ T8186] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.682578][ T8180] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 58.732878][ T8182] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 58.788099][ T8184] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 58.851332][ T8184] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 58.912850][ T8177] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.932393][ T8186] team0: Port device team_slave_0 added [ 58.942240][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.950217][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.958545][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 58.967335][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.975784][ T2731] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.982823][ T2731] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.036670][ T8186] team0: Port device team_slave_1 added [ 59.044489][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.052831][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.061571][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.070124][ T8189] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.078622][ T8189] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.086700][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.095268][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.103642][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.112150][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.120383][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.128846][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.137104][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.145434][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.153600][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.161076][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.248224][ T8186] device hsr_slave_0 entered promiscuous mode [ 59.315441][ T8186] device hsr_slave_1 entered promiscuous mode [ 59.385385][ T8186] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.393268][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.404763][ T8180] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.418786][ T8174] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.442291][ T8177] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 59.454570][ T8177] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.471613][ T8180] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.486867][ T8191] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.505396][ T8191] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.513884][ T8191] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.522271][ T8191] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.558518][ T8193] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.578656][ T8193] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.587442][ T8193] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.594516][ T8193] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.602262][ T8193] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.610740][ T8193] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.619093][ T8193] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.626182][ T8193] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.633918][ T8193] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.642711][ T8193] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.651603][ T8193] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.664050][ T8182] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.677047][ T8186] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 59.736991][ T8186] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 164.704973][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 164.711795][ C0] rcu: 0-...!: (10499 ticks this GP) idle=9f6/1/0x4000000000000002 softirq=12034/12034 fqs=41 [ 164.722358][ C0] (t=10500 jiffies g=6393 q=125) [ 164.727376][ C0] rcu: rcu_preempt kthread starved for 10417 jiffies! g6393 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 164.738458][ C0] rcu: RCU grace-period kthread stack dump: [ 164.744331][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 164.752222][ C0] Call Trace: [ 164.755509][ C0] __schedule+0x9a0/0xcc0 [ 164.759834][ C0] schedule+0x181/0x210 [ 164.763978][ C0] schedule_timeout+0x14f/0x240 [ 164.768815][ C0] ? run_local_timers+0x120/0x120 [ 164.773845][ C0] rcu_gp_kthread+0xed8/0x1770 [ 164.778607][ C0] kthread+0x332/0x350 [ 164.782658][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 164.787753][ C0] ? kthread_blkcg+0xe0/0xe0 [ 164.792328][ C0] ret_from_fork+0x24/0x30 [ 164.796749][ C0] NMI backtrace for cpu 0 [ 164.801067][ C0] CPU: 0 PID: 8197 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 [ 164.809281][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 164.819333][ C0] Call Trace: [ 164.822609][ C0] [ 164.825459][ C0] dump_stack+0x1fb/0x318 [ 164.829780][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 164.834615][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 164.840756][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 164.846812][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 164.852794][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 164.858671][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 164.863893][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 164.869105][ C0] ? trace_hardirqs_off+0x74/0x80 [ 164.874128][ C0] update_process_times+0x12d/0x180 [ 164.879322][ C0] tick_sched_timer+0x263/0x420 [ 164.884170][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 164.889708][ C0] __hrtimer_run_queues+0x403/0x840 [ 164.894911][ C0] hrtimer_interrupt+0x38c/0xda0 [ 164.899854][ C0] ? debug_smp_processor_id+0x9/0x20 [ 164.905129][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 164.910664][ C0] apic_timer_interrupt+0xf/0x20 [ 164.915587][ C0] [ 164.918518][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 [ 164.924573][ C0] Code: 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d f4 3c cd 07 48 89 de e8 d4 01 3b 00 5b 5d c3 cc <48> 8b 04 24 65 48 8b 0c 25 c0 1d 02 00 65 8b 15 38 84 8b 7e f7 c2 [ 164.944162][ C0] RSP: 0018:ffffc900024b7a30 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 164.952557][ C0] RAX: 1ffffd4000491797 RBX: 0000000000000000 RCX: 0000000000040000 [ 164.960516][ C0] RDX: ffffc90001f49000 RSI: 000000000003ffff RDI: 0000000000040000 [ 164.968474][ C0] RBP: ffffc900024b7a58 R08: dffffc0000000000 R09: fffffbfff120248a [ 164.976431][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: dffffc0000000000 [ 164.984402][ C0] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880992ef7e8 [ 164.992402][ C0] ? mod_memcg_page_state+0x123/0x190 [ 164.997778][ C0] free_thread_stack+0x168/0x590 [ 165.002711][ C0] put_task_stack+0xa3/0x130 [ 165.007299][ C0] finish_task_switch+0x3f1/0x550 [ 165.012324][ C0] __schedule+0x9a8/0xcc0 [ 165.016656][ C0] ? ___preempt_schedule_notrace+0x16/0x27 [ 165.022468][ C0] preempt_schedule_notrace+0xdb/0x120 [ 165.027916][ C0] ___preempt_schedule_notrace+0x16/0x27 [ 165.033537][ C0] ? rcu_is_watching+0x57/0xa0 [ 165.038411][ C0] rcu_is_watching+0x82/0xa0 [ 165.042999][ C0] memcg_kmem_get_cache+0x2e8/0x570 [ 165.048186][ C0] ? __should_failslab+0x11a/0x160 [ 165.053298][ C0] ? shmem_alloc_inode+0x1b/0x40 [ 165.058224][ C0] kmem_cache_alloc+0x86/0x2e0 [ 165.062976][ C0] ? shmem_match+0x180/0x180 [ 165.067554][ C0] shmem_alloc_inode+0x1b/0x40 [ 165.072309][ C0] ? shmem_match+0x180/0x180 [ 165.076887][ C0] new_inode_pseudo+0x68/0x240 [ 165.081643][ C0] new_inode+0x28/0x1c0 [ 165.085794][ C0] shmem_get_inode+0x108/0x6e0 [ 165.090556][ C0] __shmem_file_setup+0x129/0x280 [ 165.095574][ C0] shmem_file_setup+0x2f/0x40 [ 165.100430][ C0] __se_sys_memfd_create+0x28e/0x4b0 [ 165.105701][ C0] ? do_syscall_64+0x1d/0x1c0 [ 165.110365][ C0] __x64_sys_memfd_create+0x5b/0x70 [ 165.115552][ C0] do_syscall_64+0xf7/0x1c0 [ 165.121014][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 165.126888][ C0] RIP: 0033:0x45a679 [ 165.130779][ 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 [ 165.150376][ C0] RSP: 002b:00007f882d7f7a88 EFLAGS: 00000246 ORIG_RAX: 000000000000013f [ 165.158772][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045a679 [ 165.166729][ C0] RDX: 0000000000000010 RSI: 0000000000000000 RDI: 00000000004bf712 [ 165.174690][ C0] RBP: 000000000075bf20 R08: fe03f80fe03f80ff R09: 0000000000000000 [ 165.182647][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f882d7f86d4 [ 165.190604][ C0] R13: 00000000004caa79 R14: 00000000004e3ee8 R15: 00000000ffffffff