[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 43.132639][ T23] audit: type=1800 audit(1575382067.812:25): pid=8051 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 43.159376][ T23] audit: type=1800 audit(1575382067.812:26): pid=8051 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 43.203721][ T23] audit: type=1800 audit(1575382067.822:27): pid=8051 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 '10.128.0.203' (ECDSA) to the list of known hosts. 2019/12/03 14:07:58 fuzzer started 2019/12/03 14:08:00 dialing manager at 10.128.0.26:45711 2019/12/03 14:08:00 syscalls: 2689 2019/12/03 14:08:00 code coverage: enabled 2019/12/03 14:08:00 comparison tracing: enabled 2019/12/03 14:08:00 extra coverage: extra coverage is not supported by the kernel 2019/12/03 14:08:00 setuid sandbox: enabled 2019/12/03 14:08:00 namespace sandbox: enabled 2019/12/03 14:08:00 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 14:08:00 fault injection: enabled 2019/12/03 14:08:00 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 14:08:00 net packet injection: enabled 2019/12/03 14:08:00 net device setup: enabled 2019/12/03 14:08:00 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 14:08:00 devlink PCI setup: PCI device 0000:00:10.0 is not available 14:08:01 executing program 0: mknod$loop(&(0x7f0000000080)='./file0\x00', 0x0, 0xffffffffffffffff) mount(0x0, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000140)='ceph\x00', 0x0, 0x0) 14:08:01 executing program 1: r0 = syz_init_net_socket$ax25(0x3, 0x5, 0x0) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r3 = fcntl$dupfd(r2, 0x0, r1) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) getsockopt$ax25_int(r0, 0x101, 0x8, 0x0, &(0x7f0000000000)=0x2c) syzkaller login: [ 57.257120][ T8217] IPVS: ftp: loaded support on port[0] = 21 14:08:02 executing program 2: r0 = socket$kcm(0xa, 0x2, 0x73) shutdown(r0, 0x0) recvmmsg(r0, &(0x7f00000057c0)=[{{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}], 0x2, 0x10000, 0x0) [ 57.405918][ T8219] IPVS: ftp: loaded support on port[0] = 21 [ 57.450815][ T8217] chnl_net:caif_netlink_parms(): no params data found [ 57.530816][ T8217] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.538592][ T8217] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.549231][ T8217] device bridge_slave_0 entered promiscuous mode [ 57.581798][ T8217] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.588891][ T8217] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.610570][ T8217] device bridge_slave_1 entered promiscuous mode [ 57.664132][ T8217] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.692301][ T8217] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.693254][ T8222] IPVS: ftp: loaded support on port[0] = 21 [ 57.701742][ T8219] chnl_net:caif_netlink_parms(): no params data found 14:08:02 executing program 3: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = syz_open_dev$loop(&(0x7f0000000200)='/dev/loop#\x00', 0x0, 0x182) r1 = memfd_create(&(0x7f0000000240)='.^\xc5', 0x0) pwritev(r1, &(0x7f0000000340)=[{&(0x7f0000000140)='!', 0x1}], 0x1, 0x81805) ioctl$LOOP_CHANGE_FD(r0, 0x4c00, r1) sendfile(r0, r0, 0x0, 0x24000000) read(0xffffffffffffffff, 0x0, 0x0) shutdown(0xffffffffffffffff, 0x0) ioctl$LOOP_CLR_FD(r0, 0x4c01) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r1) lsetxattr$security_ima(0x0, 0x0, 0x0, 0x0, 0x7d4e1696091c44cc) [ 57.730292][ T8217] team0: Port device team_slave_0 added [ 57.756938][ T8217] team0: Port device team_slave_1 added [ 57.848080][ T8219] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.857012][ T8219] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.879549][ T8219] device bridge_slave_0 entered promiscuous mode 14:08:02 executing program 4: sched_setattr(0x0, 0x0, 0x0) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xffffffffffffffff, 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$netlink(0x10, 0x3, 0x4) writev(r0, &(0x7f0000fb1000)=[{&(0x7f0000000180)="48000000140019080000000101048c590a88ffffff010001000000000028213ee20600d4ff5bffff00c7e5ed5e00000000000000000000eaf60d18125d4b18857a9eace3dbe8b12c", 0x48}], 0x1) ioctl$sock_inet6_SIOCADDRT(0xffffffffffffffff, 0x89a0, 0x0) write$USERIO_CMD_SEND_INTERRUPT(0xffffffffffffffff, 0x0, 0x0) getpid() [ 57.961800][ T8217] device hsr_slave_0 entered promiscuous mode [ 58.009678][ T8217] device hsr_slave_1 entered promiscuous mode [ 58.051673][ T8219] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.058756][ T8219] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.099419][ T8219] device bridge_slave_1 entered promiscuous mode [ 58.134185][ T8225] IPVS: ftp: loaded support on port[0] = 21 [ 58.184328][ T8227] IPVS: ftp: loaded support on port[0] = 21 [ 58.207614][ T8219] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.222237][ T8219] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 14:08:03 executing program 5: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x80000000000002, &(0x7f00000000c0)=0x2000000000000074, 0x25d) bind$inet(r0, &(0x7f0000000280)={0x2, 0x4e23, @multicast1}, 0x10) setsockopt$SO_ATTACH_FILTER(r0, 0x1, 0x1a, &(0x7f0000000480)={0x1, &(0x7f0000000400)=[{0x6, 0x0, 0x0, 0xe5}]}, 0x10) sendto$inet(r0, 0x0, 0x0, 0x2800878d, &(0x7f0000e68000)={0x2, 0x4e23, @local}, 0x10) setsockopt$inet_tcp_TCP_CONGESTION(r0, 0x6, 0xd, &(0x7f0000000440)='veno\x00', 0x5) setsockopt$sock_int(r0, 0x1, 0x8, &(0x7f0000000600), 0x4) sendto$inet(r0, &(0x7f00000012c0)="20048a927f1f6588b967481241ba7860f46ef65ac618ded8974895abeaf4b4834ff922b3f1e0b02bd67aa03059bcecc7a95c25a3a07e758044ab4ea6f7ae55d88fecf9221a750fbf746bec66ba", 0x478, 0xe, 0x0, 0xfffffffffffffe86) [ 58.276496][ T8219] team0: Port device team_slave_0 added [ 58.303498][ T8217] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.364485][ T8219] team0: Port device team_slave_1 added [ 58.373845][ T8222] chnl_net:caif_netlink_parms(): no params data found [ 58.390751][ T8217] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.432763][ T8217] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.491973][ T8217] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.652134][ T8219] device hsr_slave_0 entered promiscuous mode [ 58.689806][ T8219] device hsr_slave_1 entered promiscuous mode [ 58.739514][ T8219] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.769204][ T8222] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.776771][ T8222] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.784481][ T8222] device bridge_slave_0 entered promiscuous mode [ 58.797647][ T8230] IPVS: ftp: loaded support on port[0] = 21 [ 58.820750][ T8225] chnl_net:caif_netlink_parms(): no params data found [ 58.829237][ T8222] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.836632][ T8222] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.844531][ T8222] device bridge_slave_1 entered promiscuous mode [ 58.884864][ T8222] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.895402][ T8222] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.910138][ T8219] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 58.970838][ T8219] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 59.024642][ T8219] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 59.101131][ T8222] team0: Port device team_slave_0 added [ 59.107342][ T8219] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 59.163679][ T8225] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.171420][ T8225] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.179033][ T8225] device bridge_slave_0 entered promiscuous mode [ 59.187517][ T8225] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.194809][ T8225] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.202930][ T8225] device bridge_slave_1 entered promiscuous mode [ 59.211329][ T8222] team0: Port device team_slave_1 added [ 59.244392][ T8227] chnl_net:caif_netlink_parms(): no params data found [ 59.277833][ T8225] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.361901][ T8222] device hsr_slave_0 entered promiscuous mode [ 59.409902][ T8222] device hsr_slave_1 entered promiscuous mode [ 59.469981][ T8222] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.478725][ T8225] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.504803][ T8225] team0: Port device team_slave_0 added [ 59.520151][ T8230] chnl_net:caif_netlink_parms(): no params data found [ 59.546906][ T8225] team0: Port device team_slave_1 added [ 59.557394][ T8217] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.581752][ T8227] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.588943][ T8227] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.597312][ T8227] device bridge_slave_0 entered promiscuous mode [ 59.605650][ T8227] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.613206][ T8227] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.621379][ T8227] device bridge_slave_1 entered promiscuous mode [ 59.648533][ T8217] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.663249][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.673511][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.682867][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.692178][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.701388][ T2725] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.708715][ T2725] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.717575][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.727986][ T8227] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.740762][ T8219] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.758597][ T8230] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.765889][ T8230] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.774233][ T8230] device bridge_slave_0 entered promiscuous mode [ 59.786722][ T8230] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.794394][ T8230] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.802613][ T8230] device bridge_slave_1 entered promiscuous mode [ 59.814667][ T8227] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.834767][ T913] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.844010][ T913] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.852851][ T913] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.859977][ T913] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.875968][ T8222] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 59.935170][ T8227] team0: Port device team_slave_0 added [ 59.964247][ T8225] device hsr_slave_0 entered promiscuous mode [ 60.019917][ T8225] device hsr_slave_1 entered promiscuous mode [ 60.059502][ T8225] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.067102][ T8222] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 60.111986][ T8230] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.122852][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.132118][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.140188][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.148789][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.160113][ T8227] team0: Port device team_slave_1 added [ 60.167903][ T8219] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.179476][ T8222] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 60.232926][ T8230] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.256795][ T8222] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 60.318088][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.327831][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.336414][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.345943][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.354678][ T2725] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.361927][ T2725] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.369905][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.378388][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.387179][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.396044][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.404559][ T2725] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.411681][ T2725] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.419722][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.428601][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.437281][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.445212][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.464499][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.474625][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.483398][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.502780][ T8230] team0: Port device team_slave_0 added [ 60.520445][ T8217] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.572547][ T8227] device hsr_slave_0 entered promiscuous mode [ 60.629762][ T8227] device hsr_slave_1 entered promiscuous mode [ 60.669516][ T8227] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.684366][ T8230] team0: Port device team_slave_1 added [ 60.702231][ T8225] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 60.755278][ T8225] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 60.803209][ T913] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.812542][ T913] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.821237][ T913] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.829613][ T913] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.838122][ T913] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.847463][ T913] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.932791][ T8230] device hsr_slave_0 entered promiscuous mode [ 60.971597][ T8230] device hsr_slave_1 entered promiscuous mode [ 61.009513][ T8230] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.031544][ T8225] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 61.071638][ T8225] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 61.131851][ T8234] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.142685][ T8234] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.156197][ T8234] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.164726][ T8234] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.175555][ T8219] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.211011][ T8230] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 61.252452][ T8230] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 61.321646][ T8227] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 61.362040][ T8227] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.419260][ T8230] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 61.461655][ T8234] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.469159][ T8234] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.476862][ T8234] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.484453][ T8234] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.493084][ T8227] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 61.525249][ T8219] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.540816][ T8230] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 61.613748][ T8217] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.626096][ T8227] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 61.678510][ T8222] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.715480][ T8222] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.728055][ T8234] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.736181][ T8234] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.792336][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.803005][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.816300][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.823466][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.837334][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 166.839303][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 166.846185][ C0] rcu: 0-...!: (1 GPs behind) idle=1a6/1/0x4000000000000002 softirq=11471/11481 fqs=37 [ 166.856395][ C0] (t=10501 jiffies g=6165 q=131) [ 166.861436][ C0] rcu: rcu_preempt kthread starved for 10428 jiffies! g6165 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 166.872857][ C0] rcu: RCU grace-period kthread stack dump: [ 166.878832][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 166.886726][ C0] Call Trace: [ 166.890024][ C0] __schedule+0x9a0/0xcc0 [ 166.894354][ C0] schedule+0x181/0x210 [ 166.898501][ C0] schedule_timeout+0x14f/0x240 [ 166.903350][ C0] ? run_local_timers+0x120/0x120 [ 166.908544][ C0] rcu_gp_kthread+0xed8/0x1770 [ 166.913333][ C0] kthread+0x332/0x350 [ 166.917398][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 166.922509][ C0] ? kthread_blkcg+0xe0/0xe0 [ 166.927124][ C0] ret_from_fork+0x24/0x30 [ 166.931642][ C0] NMI backtrace for cpu 0 [ 166.935966][ C0] CPU: 0 PID: 8089 Comm: rsyslogd Not tainted 5.4.0-syzkaller #0 [ 166.943673][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 166.953715][ C0] Call Trace: [ 166.956985][ C0] [ 166.959830][ C0] dump_stack+0x1fb/0x318 [ 166.964151][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 166.968988][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 166.975138][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 166.981196][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 166.987169][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 166.993053][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 166.998157][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 167.003373][ C0] ? trace_hardirqs_off+0x74/0x80 [ 167.008393][ C0] update_process_times+0x12d/0x180 [ 167.013585][ C0] tick_sched_timer+0x263/0x420 [ 167.018424][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 167.023982][ C0] __hrtimer_run_queues+0x403/0x840 [ 167.029196][ C0] hrtimer_interrupt+0x38c/0xda0 [ 167.034147][ C0] ? debug_smp_processor_id+0x9/0x20 [ 167.039452][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 167.045001][ C0] apic_timer_interrupt+0xf/0x20 [ 167.049921][ C0] [ 167.052854][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x22/0x50 [ 167.059000][ C0] Code: 64 02 3b 00 5b 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 [ 167.078618][ C0] RSP: 0018:ffffc90001a97a28 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 167.087080][ C0] RAX: ffffffff81487433 RBX: 0000000000000000 RCX: ffff888093d6c300 [ 167.095051][ C0] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00027c58c0 [ 167.103042][ C0] RBP: ffffc90001a97a50 R08: dffffc0000000000 R09: fffffbfff120248a [ 167.111017][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: dffffc0000000000 [ 167.118983][ C0] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff888095a27628 [ 167.126970][ C0] ? mod_memcg_page_state+0x123/0x190 [ 167.132337][ C0] ? free_thread_stack+0x124/0x590 [ 167.137440][ C0] ? mod_memcg_page_state+0x123/0x190 [ 167.142809][ C0] free_thread_stack+0x168/0x590 [ 167.147743][ C0] put_task_stack+0xa3/0x130 [ 167.152328][ C0] finish_task_switch+0x3f1/0x550 [ 167.157360][ C0] __schedule+0x9a8/0xcc0 [ 167.161697][ C0] schedule+0x181/0x210 [ 167.166192][ C0] do_syslog+0xdc7/0x1740 [ 167.170521][ C0] ? init_wait_entry+0xe0/0xe0 [ 167.175286][ C0] kmsg_read+0x94/0xd0 [ 167.179346][ C0] ? mmap_vmcore_fault+0x10/0x10 [ 167.184278][ C0] proc_reg_read+0x1e2/0x2d0 [ 167.188858][ C0] ? proc_reg_llseek+0x2c0/0x2c0 [ 167.193793][ C0] __vfs_read+0xb8/0x730 [ 167.198032][ C0] ? security_file_permission+0x23c/0x350 [ 167.203750][ C0] ? rw_verify_area+0x1c2/0x360 [ 167.208590][ C0] vfs_read+0x1dd/0x420 [ 167.212763][ C0] ksys_read+0x117/0x220 [ 167.217022][ C0] __x64_sys_read+0x7b/0x90 [ 167.221560][ C0] do_syscall_64+0xf7/0x1c0 [ 167.226067][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 167.231951][ C0] RIP: 0033:0x7f897e4a71fd [ 167.236360][ C0] Code: d1 20 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 5e fa ff ff 48 89 04 24 b8 00 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 a7 fa ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 167.255959][ C0] RSP: 002b:00007f897ba46e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 [ 167.264362][ C0] RAX: ffffffffffffffda RBX: 0000000001b2a650 RCX: 00007f897e4a71fd [ 167.272325][ C0] RDX: 0000000000000fff RSI: 00007f897d27b5a0 RDI: 0000000000000004 [ 167.280287][ C0] RBP: 0000000000000000 R08: 0000000001b15260 R09: 0000000000000000 [ 167.288249][ C0] R10: 203a7463656a626f R11: 0000000000000293 R12: 000000000065e420 [ 167.296213][ C0] R13: 00007f897ba479c0 R14: 00007f897eaec040 R15: 0000000000000003