[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 44.855399][ T23] audit: type=1800 audit(1575321919.470:25): pid=8100 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 44.875413][ T23] audit: type=1800 audit(1575321919.470:26): pid=8100 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 44.923383][ T23] audit: type=1800 audit(1575321919.470:27): pid=8100 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 '10.128.10.22' (ECDSA) to the list of known hosts. 2019/12/02 21:25:27 fuzzer started 2019/12/02 21:25:28 dialing manager at 10.128.0.26:38907 2019/12/02 21:25:28 syscalls: 2697 2019/12/02 21:25:28 code coverage: enabled 2019/12/02 21:25:28 comparison tracing: enabled 2019/12/02 21:25:28 extra coverage: extra coverage is not supported by the kernel 2019/12/02 21:25:28 setuid sandbox: enabled 2019/12/02 21:25:28 namespace sandbox: enabled 2019/12/02 21:25:28 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/02 21:25:28 fault injection: enabled 2019/12/02 21:25:28 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/02 21:25:28 net packet injection: enabled 2019/12/02 21:25:28 net device setup: enabled 2019/12/02 21:25:28 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/02 21:25:28 devlink PCI setup: PCI device 0000:00:10.0 is not available 21:25:29 executing program 0: r0 = socket$inet_dccp(0x2, 0x6, 0x0) ioctl$sock_inet_SIOCGARP(r0, 0x8954, &(0x7f0000000080)={{}, {0x0, @random="93df915983d2"}, 0x0, {0x2, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}}, 'veth1\x00'}) 21:25:29 executing program 1: rt_sigpending(0xfffffffffffffffd, 0x0) syzkaller login: [ 55.302661][ T8263] IPVS: ftp: loaded support on port[0] = 21 21:25:30 executing program 2: 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$packet(0x11, 0x3, 0x300) setsockopt$packet_int(r0, 0x107, 0xf, &(0x7f0000000000)=0xfc, 0x13e) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000001340)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f00000000c0)={'syz_tun\x00', 0x0}) bind$packet(r0, &(0x7f0000000140)={0x11, 0x0, r2, 0x1, 0x0, 0x6, @broadcast}, 0x14) sendto$inet6(r0, &(0x7f0000000040)="0303030003004c0000001100ff015b4202938207d9fb3780398d5375010000007929301ee616d5c01843e06590080053a6e385472da7222a2bb401000000c3b50035110f118d0000f5cfe606f6925cbf34658ea132797b1a", 0x1af, 0x0, 0x0, 0xfffffffffffffec9) [ 55.467946][ T8266] IPVS: ftp: loaded support on port[0] = 21 [ 55.479515][ T8263] chnl_net:caif_netlink_parms(): no params data found [ 55.552158][ T8263] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.569149][ T8263] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.580238][ T8263] device bridge_slave_0 entered promiscuous mode [ 55.601852][ T8263] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.620045][ T8263] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.630167][ T8263] device bridge_slave_1 entered promiscuous mode [ 55.654513][ T8263] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.666676][ T8263] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.694692][ T8268] IPVS: ftp: loaded support on port[0] = 21 [ 55.713397][ T8263] team0: Port device team_slave_0 added [ 55.725892][ T8263] team0: Port device team_slave_1 added 21:25:30 executing program 3: prctl$PR_SET_MM_MAP(0x23, 0xe, &(0x7f0000000000)={&(0x7f0000ffc000/0x4000)=nil, &(0x7f0000ffe000/0x2000)=nil, &(0x7f0000002000/0x3000)=nil, &(0x7f0000003000/0x2000)=nil, &(0x7f0000007000/0x3000)=nil, &(0x7f0000008000/0x4000)=nil, &(0x7f0000ffa000/0x4000)=nil, &(0x7f0000ffc000/0x2000)=nil, &(0x7f0000ffc000/0x1000)=nil, &(0x7f0000009000/0x1000)=nil, &(0x7f0000fff000/0x1000)=nil, 0x0}, 0x68) r0 = inotify_init1(0x0) fcntl$setown(r0, 0x8, 0xffffffffffffffff) fcntl$getownex(r0, 0x10, &(0x7f0000000100)={0x0, 0x0}) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000080)={0xffffffffffffffff, 0xffffffffffffffff}) r3 = dup(r2) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) process_vm_readv(r1, &(0x7f0000000380)=[{&(0x7f0000000340)=""/61, 0x3d}], 0x1, &(0x7f0000002540)=[{&(0x7f00000003c0)=""/63, 0x7ffff002}], 0x2, 0x0) [ 55.862718][ T8263] device hsr_slave_0 entered promiscuous mode 21:25:30 executing program 4: r0 = socket$inet6(0xa, 0x3, 0x6b) ioctl(r0, 0x1000008912, &(0x7f0000000000)="0815b5055e0bcfe87b3071") r1 = socket$inet6_tcp(0xa, 0x1, 0x0) fsetxattr$smack_xattr_label(r1, &(0x7f0000000040)='security.SMACK64IPIN\x00', &(0x7f00000000c0)={':&wlan1$vmnet0wlan0eth0\\.*'}, 0x1b, 0x0) [ 55.940444][ T8263] device hsr_slave_1 entered promiscuous mode [ 55.996471][ T8266] chnl_net:caif_netlink_parms(): no params data found [ 56.070025][ T8271] IPVS: ftp: loaded support on port[0] = 21 [ 56.088238][ T8266] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.119215][ T8266] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.127238][ T8266] device bridge_slave_0 entered promiscuous mode [ 56.150689][ T8266] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.157804][ T8266] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.170197][ T8266] device bridge_slave_1 entered promiscuous mode [ 56.212126][ T8273] IPVS: ftp: loaded support on port[0] = 21 [ 56.280704][ T8266] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.301911][ T8268] chnl_net:caif_netlink_parms(): no params data found 21:25:30 executing program 5: socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = fcntl$dupfd(r1, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) keyctl$instantiate(0xc, 0x0, &(0x7f0000000100)=@encrypted_new={'new ', 'default', 0x20, 'user:', 'em1', 0x20, 0xdfc}, 0x2a, 0xfffffffffffffffd) add_key(&(0x7f0000000140)='encrypted\x00', &(0x7f0000000180)={'syz'}, &(0x7f0000000100), 0x1f1, 0xfffffffffffffffe) add_key(0x0, 0x0, 0x0, 0x0, 0xfffffffffffffffe) [ 56.327532][ T8263] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.402250][ T8263] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.462125][ T8266] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.488346][ T8263] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.558848][ T8263] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.612861][ T8266] team0: Port device team_slave_0 added [ 56.640323][ T8266] team0: Port device team_slave_1 added [ 56.647812][ T8277] IPVS: ftp: loaded support on port[0] = 21 [ 56.666169][ T8268] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.673539][ T8268] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.681384][ T8268] device bridge_slave_0 entered promiscuous mode [ 56.717382][ T8268] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.727535][ T8268] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.735657][ T8268] device bridge_slave_1 entered promiscuous mode [ 56.801623][ T8266] device hsr_slave_0 entered promiscuous mode [ 56.849493][ T8266] device hsr_slave_1 entered promiscuous mode [ 56.889225][ T8266] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.913211][ T8271] chnl_net:caif_netlink_parms(): no params data found [ 56.928484][ T8268] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.978461][ T8268] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.009257][ T8268] team0: Port device team_slave_0 added [ 57.016729][ T8273] chnl_net:caif_netlink_parms(): no params data found [ 57.036057][ T8268] team0: Port device team_slave_1 added [ 57.133227][ T8268] device hsr_slave_0 entered promiscuous mode [ 57.199369][ T8268] device hsr_slave_1 entered promiscuous mode [ 57.289246][ T8268] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.296980][ T8266] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 57.345677][ T8266] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 57.446357][ T8266] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 57.531252][ T8266] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 57.573541][ T8271] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.580732][ T8271] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.589230][ T8271] device bridge_slave_0 entered promiscuous mode [ 57.598522][ T8271] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.605961][ T8271] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.614649][ T8271] device bridge_slave_1 entered promiscuous mode [ 57.627346][ T8273] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.637215][ T8273] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.645482][ T8273] device bridge_slave_0 entered promiscuous mode [ 57.653732][ T8273] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.661644][ T8273] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.670659][ T8273] device bridge_slave_1 entered promiscuous mode [ 57.689710][ T8273] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.706866][ T8273] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.724318][ T8277] chnl_net:caif_netlink_parms(): no params data found [ 57.746605][ T8271] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.768274][ T8273] team0: Port device team_slave_0 added [ 57.779264][ T8271] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.798061][ T8273] team0: Port device team_slave_1 added [ 57.824812][ T8277] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.832232][ T8277] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.840455][ T8277] device bridge_slave_0 entered promiscuous mode [ 57.854007][ T8268] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 57.891247][ T8268] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 57.954299][ T8277] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.962498][ T8277] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.972517][ T8277] device bridge_slave_1 entered promiscuous mode [ 57.996599][ T8263] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.004254][ T8268] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.082712][ T8273] device hsr_slave_0 entered promiscuous mode [ 58.109437][ T8273] device hsr_slave_1 entered promiscuous mode [ 58.159393][ T8273] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.168702][ T8271] team0: Port device team_slave_0 added [ 58.176226][ T8271] team0: Port device team_slave_1 added [ 58.252085][ T8271] device hsr_slave_0 entered promiscuous mode [ 58.289510][ T8271] device hsr_slave_1 entered promiscuous mode [ 58.329226][ T8271] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.337122][ T8268] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 58.404403][ T8277] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.416238][ T8277] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.468336][ T8273] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 58.493977][ T8273] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 58.550108][ T8271] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 58.595145][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.604361][ T2706] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.613214][ T8273] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 58.662740][ T8273] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 58.713066][ T8277] team0: Port device team_slave_0 added [ 58.722971][ T8263] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.733424][ T8271] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 58.792018][ T8271] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 58.843560][ T8277] team0: Port device team_slave_1 added [ 58.902249][ T8277] device hsr_slave_0 entered promiscuous mode [ 58.960060][ T8277] device hsr_slave_1 entered promiscuous mode [ 58.999184][ T8277] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.009470][ T8271] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 59.090890][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.100288][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.109269][ T8278] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.116833][ T8278] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.125851][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.135643][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.144458][ T8278] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.151569][ T8278] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.159132][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.167757][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.189716][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.207798][ T8266] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.239102][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.247656][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.258793][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.267411][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.275759][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.284700][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.293065][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.301600][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.319322][ T8266] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.343585][ T8263] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.353158][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.361945][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.370740][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.392979][ T8277] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 59.463954][ T8277] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 59.512788][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.523167][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.532445][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.539763][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.547532][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.556638][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.565178][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.572471][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.580923][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.591834][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.613898][ T8277] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 59.661656][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.671626][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.679714][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.687280][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.696305][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.705277][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.721007][ T8268] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.735828][ T8273] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.743315][ T8277] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 59.786265][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.795255][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.804098][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.812898][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.824922][ T8263] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.840576][ T8271] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.865399][ T8268] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.884480][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.895000][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.903630][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.912112][ T8278] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.932313][ T8273] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.945863][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.954861][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.963368][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.988982][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.004527][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.013599][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.022013][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.029116][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.038126][ T8266] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.063855][ T8266] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 164.999008][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 165.005872][ C1] rcu: 1-...!: (10500 ticks this GP) idle=1da/1/0x4000000000000002 softirq=11279/11279 fqs=40 [ 165.017303][ C1] (t=10502 jiffies g=6557 q=181) [ 165.022336][ C1] rcu: rcu_preempt kthread starved for 10423 jiffies! g6557 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 165.033794][ C1] rcu: RCU grace-period kthread stack dump: [ 165.039688][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 165.047961][ C1] Call Trace: [ 165.051256][ C1] __schedule+0x9a0/0xcc0 [ 165.055676][ C1] schedule+0x181/0x210 [ 165.060025][ C1] schedule_timeout+0x14f/0x240 [ 165.064952][ C1] ? run_local_timers+0x120/0x120 [ 165.070141][ C1] rcu_gp_kthread+0xed8/0x1770 [ 165.074901][ C1] kthread+0x332/0x350 [ 165.078952][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 165.084046][ C1] ? kthread_blkcg+0xe0/0xe0 [ 165.088725][ C1] ret_from_fork+0x24/0x30 [ 165.093144][ C1] NMI backtrace for cpu 1 [ 165.097462][ C1] CPU: 1 PID: 8138 Comm: rsyslogd Not tainted 5.4.0-syzkaller #0 [ 165.105439][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 165.117159][ C1] Call Trace: [ 165.120781][ C1] [ 165.123649][ C1] dump_stack+0x1fb/0x318 [ 165.127969][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 165.133778][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 165.140301][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 165.146356][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 165.152424][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 165.158911][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 165.164031][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 165.169230][ C1] ? trace_hardirqs_off+0x74/0x80 [ 165.174247][ C1] update_process_times+0x12d/0x180 [ 165.179437][ C1] tick_sched_timer+0x263/0x420 [ 165.184286][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 165.189906][ C1] __hrtimer_run_queues+0x403/0x840 [ 165.195105][ C1] hrtimer_interrupt+0x38c/0xda0 [ 165.200303][ C1] ? debug_smp_processor_id+0x9/0x20 [ 165.205926][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 165.211806][ C1] apic_timer_interrupt+0xf/0x20 [ 165.216730][ C1] [ 165.219672][ C1] RIP: 0010:mod_memcg_page_state+0x168/0x190 [ 165.225769][ C1] Code: c7 28 96 0a 89 e8 a8 9e 69 00 48 83 3d c8 21 c2 07 00 74 2d e8 99 27 2e 00 4c 89 ff 57 9d 0f 1f 44 00 00 5b 41 5c 41 5e 41 5f <5d> c3 e8 81 27 2e 00 0f 0b e8 7a 27 2e 00 0f 0b e8 73 27 2e 00 0f [ 165.245624][ C1] RSP: 0018:ffffc90001a37a50 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 165.254062][ C1] RAX: ffffffff81487433 RBX: ffff88808fb46808 RCX: ffff8880a500a100 [ 165.262039][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00028b6540 [ 165.270102][ C1] RBP: ffffc90001a37a50 R08: 000000000003a768 R09: ffffed1012eb231f [ 165.278072][ C1] R10: ffffed1012eb231f R11: 0000000000000000 R12: ffff88808fb468a0 [ 165.286145][ C1] R13: dffffc0000000000 R14: 1ffff11011f68d14 R15: ffff8880975918e8 [ 165.295622][ C1] ? mod_memcg_page_state+0x123/0x190 [ 165.301011][ C1] free_thread_stack+0x168/0x590 [ 165.305941][ C1] put_task_stack+0xa3/0x130 [ 165.310521][ C1] finish_task_switch+0x3f1/0x550 [ 165.315537][ C1] __schedule+0x9a8/0xcc0 [ 165.319866][ C1] schedule+0x181/0x210 [ 165.324020][ C1] do_syslog+0xdc7/0x1740 [ 165.328531][ C1] ? init_wait_entry+0xe0/0xe0 [ 165.333289][ C1] kmsg_read+0x94/0xd0 [ 165.337359][ C1] ? mmap_vmcore_fault+0x10/0x10 [ 165.342286][ C1] proc_reg_read+0x1e2/0x2d0 [ 165.346865][ C1] ? proc_reg_llseek+0x2c0/0x2c0 [ 165.351820][ C1] __vfs_read+0xb8/0x730 [ 165.356077][ C1] ? security_file_permission+0x23c/0x350 [ 165.361789][ C1] ? rw_verify_area+0x1c2/0x360 [ 165.366633][ C1] vfs_read+0x1dd/0x420 [ 165.370814][ C1] ksys_read+0x117/0x220 [ 165.375070][ C1] __x64_sys_read+0x7b/0x90 [ 165.379658][ C1] do_syscall_64+0xf7/0x1c0 [ 165.384151][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 165.390171][ C1] RIP: 0033:0x7f3792d2b1fd [ 165.394602][ C1] 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 [ 165.414222][ C1] RSP: 002b:00007f37902cae30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 [ 165.423157][ C1] RAX: ffffffffffffffda RBX: 00000000024cb650 RCX: 00007f3792d2b1fd [ 165.431121][ C1] RDX: 0000000000000fff RSI: 00007f3791aff5a0 RDI: 0000000000000004 [ 165.439091][ C1] RBP: 0000000000000000 R08: 00000000024b6260 R09: 0000000000000000 [ 165.447052][ C1] R10: 203a7463656a626f R11: 0000000000000293 R12: 000000000065e420 [ 165.455078][ C1] R13: 00007f37902cb9c0 R14: 00007f3793370040 R15: 0000000000000003