[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 45.485521][ T25] audit: type=1800 audit(1575452568.305:25): pid=7935 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 45.507670][ T25] audit: type=1800 audit(1575452568.315:26): pid=7935 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 45.548145][ T25] audit: type=1800 audit(1575452568.315:27): pid=7935 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 '10.128.0.234' (ECDSA) to the list of known hosts. 2019/12/04 09:42:58 fuzzer started 2019/12/04 09:42:59 dialing manager at 10.128.0.26:36481 2019/12/04 09:42:59 syscalls: 2691 2019/12/04 09:42:59 code coverage: enabled 2019/12/04 09:42:59 comparison tracing: enabled 2019/12/04 09:42:59 extra coverage: extra coverage is not supported by the kernel 2019/12/04 09:42:59 setuid sandbox: enabled 2019/12/04 09:42:59 namespace sandbox: enabled 2019/12/04 09:42:59 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 09:42:59 fault injection: enabled 2019/12/04 09:42:59 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 09:42:59 net packet injection: enabled 2019/12/04 09:42:59 net device setup: enabled 2019/12/04 09:42:59 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 09:42:59 devlink PCI setup: PCI device 0000:00:10.0 is not available 09:43:00 executing program 0: r0 = syz_open_dev$evdev(&(0x7f0000000100)='/dev/input/event#\x00', 0x2, 0x0) request_key(&(0x7f0000000240)='keyring\x00', 0x0, 0x0, 0xffffffffffffffff) ioctl$EVIOCGKEYCODE(r0, 0x80084504, &(0x7f0000000240)=""/78) 09:43:01 executing program 1: socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = dup2(r1, r0) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) r3 = memfd_create(&(0x7f00000000c0)='vboxnet0md5sum\x00', 0x0) write(r3, &(0x7f0000000040)="06", 0x1) mmap(&(0x7f0000000000/0x7000)=nil, 0x7000, 0x80000000004, 0x11, r3, 0x0) r4 = socket$inet_dccp(0x2, 0x6, 0x0) getsockopt$inet_int(r4, 0x10d, 0x0, 0x0, &(0x7f0000000000)) unshare(0x2000400) r5 = socket$inet_dccp(0x2, 0x6, 0x0) getsockopt$inet_int(r5, 0x10d, 0xcd, 0x0, &(0x7f0000000000)) syzkaller login: [ 58.285826][ T8102] IPVS: ftp: loaded support on port[0] = 21 [ 58.411085][ T8104] IPVS: ftp: loaded support on port[0] = 21 09:43:01 executing program 2: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 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_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = socket$netlink(0x10, 0x3, 0x0) r1 = socket(0x10, 0x803, 0x0) sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000180)={0x0}}, 0x0) getsockname$packet(r1, &(0x7f0000000100)={0x11, 0x0, 0x0, 0x1, 0x0, 0x6, @broadcast}, &(0x7f0000000200)=0x14) sendmsg$nl_route(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000240)={&(0x7f00000003c0)=@newlink={0x38, 0x10, 0x705, 0xd002, 0x0, {0x0, 0x0, 0x0, 0x0, 0x3}, [@IFLA_LINKINFO={0x18, 0x12, @sit={{0x8, 0x1, 'sit\x00'}, {0xc, 0x2, [@tunl_policy=[@IFLA_IPTUN_LINK={0x8, 0x3, r2}]]}}}]}, 0x38}}, 0x0) [ 58.462010][ T8102] chnl_net:caif_netlink_parms(): no params data found [ 58.600690][ T8102] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.617566][ T8102] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.625655][ T8102] device bridge_slave_0 entered promiscuous mode [ 58.640931][ T8104] chnl_net:caif_netlink_parms(): no params data found [ 58.651880][ T8102] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.660690][ T8102] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.669505][ T8102] device bridge_slave_1 entered promiscuous mode [ 58.692171][ T8108] IPVS: ftp: loaded support on port[0] = 21 [ 58.709250][ T8102] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.737708][ T8102] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.754582][ T8104] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.762723][ T8104] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.771560][ T8104] device bridge_slave_0 entered promiscuous mode 09:43:01 executing program 3: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) bpf$PROG_LOAD(0x5, &(0x7f0000000100)={0x1, 0x3, &(0x7f0000001fd8)=@framed={{0xffffffb4, 0x0, 0x0, 0x0, 0x0, 0x72, 0xa, 0xffc2}}, &(0x7f0000000180)='EP\xd4\x00\x1f\x91\xeb/W\xb72$C0%\x03\x9c0\x96\xb2\fkC\x93H\xbfh\x9c\b`\x857\xd6\">c\xad\xc0bO\xba\xe2\xe1\t5\x9d\xcei\"2L\xcc\x13\x16\vh\xca\xe6C\x06\x97%\x9d\xd5-\x1fs\xe1j\xdc5\x92\xd0)%\xdf\xfa\xe8^\x9c\xd29\x8clg\xc8\x7f\xb5\xb1&\x02\xf1E\xb4\x84\xbeE\x91)f\xe8\xb7\xe2\xf6`i\xc5m\xd7l\x1d\xc1\x12\x01<:kM\xe9\x99\xcd\xcd\xc8\x85Z\xee47\xdc\xc8u\x80\xcf\xbeTo\xbb\xfb\xc0\xebV\xd8\xbb\xbe\xa2\x90J|s\xc2', 0x1, 0xc3, &(0x7f0000000000)=""/195, 0x0, 0x0, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xd13c1c00]}, 0x48) [ 58.800225][ T8104] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.807365][ T8104] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.816298][ T8104] device bridge_slave_1 entered promiscuous mode [ 58.828643][ T8102] team0: Port device team_slave_0 added [ 58.843364][ T8102] team0: Port device team_slave_1 added [ 58.890351][ T8104] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.910347][ T8104] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.959179][ T8104] team0: Port device team_slave_0 added [ 58.967357][ T8104] team0: Port device team_slave_1 added 09:43:01 executing program 4: r0 = socket$inet6(0xa, 0x3, 0x81) ioctl(r0, 0x1000008912, &(0x7f0000000000)="0815b5055e0bcfe87b3071") r1 = socket$alg(0x26, 0x5, 0x0) bind$alg(r1, &(0x7f0000000080)={0x26, 'skcipher\x00', 0x0, 0x0, 'pcbc(fcrypt)\x00'}, 0x58) setsockopt$ALG_SET_KEY(r1, 0x117, 0x1, &(0x7f0000412ff8)="3665a1ab415b7ac7", 0x8) r2 = accept(r1, 0x0, 0x0) sendmsg$NBD_CMD_STATUS(r2, &(0x7f00000004c0)={0x0, 0x0, &(0x7f0000000480)={&(0x7f0000000040)={0x14}, 0xf5}}, 0x4008014) recvmsg(r2, &(0x7f000000b680)={0x0, 0x0, &(0x7f000000b600)=[{&(0x7f000000b4c0)=""/5, 0x5}, {&(0x7f000000b500)=""/153, 0x7fffeffb}], 0x2}, 0x0) [ 59.029621][ T8102] device hsr_slave_0 entered promiscuous mode [ 59.067822][ T8102] device hsr_slave_1 entered promiscuous mode [ 59.151976][ T8104] device hsr_slave_0 entered promiscuous mode [ 59.230036][ T8104] device hsr_slave_1 entered promiscuous mode [ 59.257745][ T8104] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.274130][ T8110] IPVS: ftp: loaded support on port[0] = 21 09:43:02 executing program 5: r0 = socket$inet_tcp(0x2, 0x1, 0x0) bind$inet(r0, &(0x7f0000000200)={0x2, 0x4e20, @multicast1}, 0x10) setsockopt$sock_int(r0, 0x1, 0x8, &(0x7f00000000c0)=0xfffffff9, 0x4) connect$inet(r0, &(0x7f0000000000)={0x2, 0x4e20, @dev={0xac, 0x14, 0x14, 0x18}}, 0x10) [ 59.323111][ T8112] IPVS: ftp: loaded support on port[0] = 21 [ 59.370283][ T8102] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 59.442250][ T8102] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 59.490464][ T8102] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 59.530856][ T8102] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 59.589880][ T8104] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 59.658790][ T8104] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 59.712044][ T8104] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 59.759179][ T8104] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 59.808828][ T8108] chnl_net:caif_netlink_parms(): no params data found [ 59.841314][ T8115] IPVS: ftp: loaded support on port[0] = 21 [ 59.903357][ T8108] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.911986][ T8108] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.919736][ T8108] device bridge_slave_0 entered promiscuous mode [ 59.928146][ T8108] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.935210][ T8108] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.943061][ T8108] device bridge_slave_1 entered promiscuous mode [ 59.985153][ T8108] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.033215][ T8108] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.060693][ T8112] chnl_net:caif_netlink_parms(): no params data found [ 60.075999][ T8110] chnl_net:caif_netlink_parms(): no params data found [ 60.119250][ T8108] team0: Port device team_slave_0 added [ 60.133959][ T8112] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.141159][ T8112] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.149062][ T8112] device bridge_slave_0 entered promiscuous mode [ 60.173453][ T8112] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.180955][ T8112] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.189026][ T8112] device bridge_slave_1 entered promiscuous mode [ 60.211331][ T8108] team0: Port device team_slave_1 added [ 60.218185][ T8110] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.225232][ T8110] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.233000][ T8110] device bridge_slave_0 entered promiscuous mode [ 60.241127][ T8110] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.248268][ T8110] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.257133][ T8110] device bridge_slave_1 entered promiscuous mode [ 60.274322][ T8112] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.285211][ T8112] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.389564][ T8108] device hsr_slave_0 entered promiscuous mode [ 60.457984][ T8108] device hsr_slave_1 entered promiscuous mode [ 60.517557][ T8108] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.534432][ T8115] chnl_net:caif_netlink_parms(): no params data found [ 60.548536][ T8112] team0: Port device team_slave_0 added [ 60.556398][ T8102] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.567730][ T8104] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.575869][ T8110] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.593288][ T8112] team0: Port device team_slave_1 added [ 60.606529][ T8102] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.617682][ T8110] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.636210][ T3707] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.644538][ T3707] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.665441][ T8110] team0: Port device team_slave_0 added [ 60.691505][ T8110] team0: Port device team_slave_1 added [ 60.713222][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.722911][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.731415][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.738582][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.746508][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.756275][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.764627][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.771674][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.779859][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.788107][ T8108] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 60.833620][ T8108] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 60.869042][ T8108] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 60.912828][ T8108] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 60.978785][ T8115] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.985872][ T8115] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.996326][ T8115] device bridge_slave_0 entered promiscuous mode [ 61.005244][ T8115] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.012855][ T8115] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.020707][ T8115] device bridge_slave_1 entered promiscuous mode [ 61.032475][ T8104] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.090122][ T8112] device hsr_slave_0 entered promiscuous mode [ 61.127801][ T8112] device hsr_slave_1 entered promiscuous mode [ 61.187539][ T8112] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.195595][ T8119] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.204597][ T8119] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.212511][ T8119] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.252431][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.262194][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.271138][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.279685][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.288283][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.300514][ T8115] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.390187][ T8110] device hsr_slave_0 entered promiscuous mode [ 61.437834][ T8110] device hsr_slave_1 entered promiscuous mode [ 61.478662][ T8110] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.488841][ T8102] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 61.499584][ T8102] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 61.512225][ T8121] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.521310][ T8121] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.529630][ T8121] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.538495][ T8121] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.546689][ T8121] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.556518][ T8121] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.564292][ T8121] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.573214][ T8121] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.581633][ T8121] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.588702][ T8121] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.597532][ T8115] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.640093][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.648741][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.657137][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.666451][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.673529][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.681323][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.709504][ T8112] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 61.749924][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.757351][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.765008][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.775540][ T8112] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.840633][ T8102] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.853399][ T8115] team0: Port device team_slave_0 added [ 61.862993][ T8115] team0: Port device team_slave_1 added [ 61.874636][ T8112] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 61.930375][ T8112] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 61.966779][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.976698][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.991367][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.010974][ T8108] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.029733][ T8110] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 62.060939][ T8110] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 167.087402][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 167.094515][ C1] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8124 [ 167.101954][ C1] (detected by 1, t=10503 jiffies, g=6213, q=273) [ 167.108440][ C1] syz-executor.0 R running task 28304 8124 8102 0x0000400e [ 167.116330][ C1] Call Trace: [ 167.119603][ C1] [ 167.122437][ C1] sched_show_task+0x40f/0x560 [ 167.127328][ C1] rcu_sched_clock_irq+0x16b1/0x1ad0 [ 167.132624][ C1] update_process_times+0x12d/0x180 [ 167.137855][ C1] tick_sched_timer+0x263/0x420 [ 167.142685][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 167.148215][ C1] __hrtimer_run_queues+0x403/0x840 [ 167.153449][ C1] hrtimer_interrupt+0x38c/0xda0 [ 167.158370][ C1] ? debug_smp_processor_id+0x9/0x20 [ 167.163633][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 167.169584][ C1] apic_timer_interrupt+0xf/0x20 [ 167.174504][ C1] [ 167.177418][ C1] RIP: 0010:mod_memcg_page_state+0x2b/0x190 [ 167.183283][ C1] Code: 48 89 e5 41 57 41 56 41 54 53 41 89 f6 48 89 fb e8 5a 26 2e 00 48 83 c3 38 48 89 d8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df <42> 80 3c 20 00 74 08 48 89 df e8 b6 9b 69 00 48 8b 1b 48 85 db 0f [ 167.202859][ C1] RSP: 0018:ffffc90002bc7480 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff13 [ 167.211254][ C1] RAX: 1ffffd400035e10f RBX: ffffea0001af0878 RCX: ffff8880a8008140 [ 167.219197][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0001af0840 [ 167.227140][ C1] RBP: ffffc90002bc74a0 R08: dffffc0000000000 R09: fffffbfff120248a [ 167.235085][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: dffffc0000000000 [ 167.243031][ C1] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff888086d2b4e8 [ 167.250989][ C1] free_thread_stack+0x168/0x590 [ 167.255899][ C1] put_task_stack+0xa3/0x130 [ 167.260486][ C1] finish_task_switch+0x3f1/0x550 [ 167.265500][ C1] __schedule+0x9a8/0xcc0 [ 167.269831][ C1] ? ___preempt_schedule_notrace+0x16/0x27 [ 167.275624][ C1] preempt_schedule_notrace+0xdb/0x120 [ 167.281201][ C1] ___preempt_schedule_notrace+0x16/0x27 [ 167.286819][ C1] ? rcu_is_watching+0x57/0xa0 [ 167.291586][ C1] rcu_is_watching+0x82/0xa0 [ 167.296166][ C1] memcg_kmem_get_cache+0x2e8/0x570 [ 167.301348][ C1] ? __should_failslab+0x11a/0x160 [ 167.306450][ C1] ? proc_alloc_inode+0x1f/0xe0 [ 167.311314][ C1] kmem_cache_alloc+0x86/0x2e0 [ 167.316073][ C1] ? init_once+0x20/0x20 [ 167.320364][ C1] proc_alloc_inode+0x1f/0xe0 [ 167.325034][ C1] ? init_once+0x20/0x20 [ 167.329369][ C1] new_inode_pseudo+0x68/0x240 [ 167.334110][ C1] new_inode+0x28/0x1c0 [ 167.338241][ C1] proc_pid_make_inode+0x27/0x1d0 [ 167.343340][ C1] proc_pid_instantiate+0x4f/0x1a0 [ 167.348445][ C1] proc_pid_lookup+0x21f/0x300 [ 167.353183][ C1] proc_root_lookup+0x22/0x50 [ 167.357837][ C1] __lookup_slow+0x285/0x380 [ 167.362404][ C1] walk_component+0x2d6/0x7b0 [ 167.367054][ C1] ? inode_permission+0xe0/0x520 [ 167.371964][ C1] link_path_walk+0x75b/0x1410 [ 167.376708][ C1] path_openat+0x139/0x44a0 [ 167.381184][ C1] ? __kasan_kmalloc+0x178/0x1b0 [ 167.386102][ C1] ? rcu_read_lock_sched_held+0x10b/0x170 [ 167.391806][ C1] do_filp_open+0x192/0x3d0 [ 167.396287][ C1] ? noop_direct_IO+0x20/0x20 [ 167.400956][ C1] do_sys_open+0x29f/0x560 [ 167.405352][ C1] __x64_sys_open+0x87/0x90 [ 167.409844][ C1] do_syscall_64+0xf7/0x1c0 [ 167.414434][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 167.420313][ C1] RIP: 0033:0x4143f0 [ 167.424182][ C1] Code: 05 48 3d 01 f0 ff ff 0f 83 2d 19 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 7d 40 66 00 00 75 14 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 0a fa ff ff [ 167.443787][ C1] RSP: 002b:00007ffe0a008018 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 167.452170][ C1] RAX: ffffffffffffffda RBX: 00007ffe0a008044 RCX: 00000000004143f0 [ 167.460117][ C1] RDX: 00007ffe0a00804a RSI: 0000000000080001 RDI: 00000000004c00fb [ 167.468078][ C1] RBP: 00007ffe0a008040 R08: 0000000000000000 R09: 0000000000000004 [ 167.476044][ C1] R10: 0000000000000075 R11: 0000000000000246 R12: 00000000004c00fb [ 167.483988][ C1] R13: 00007ffe0a008560 R14: 0000000000000000 R15: 00007ffe0a008570 [ 167.491955][ C1] rcu: rcu_preempt kthread starved for 4885 jiffies! g6213 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 167.502956][ C1] rcu: RCU grace-period kthread stack dump: [ 167.508836][ C1] rcu_preempt R running task 28792 10 2 0x80004000 [ 167.516721][ C1] Call Trace: [ 167.520004][ C1] __schedule+0x9a0/0xcc0 [ 167.524330][ C1] schedule+0x181/0x210 [ 167.528475][ C1] schedule_timeout+0x14f/0x240 [ 167.533313][ C1] ? run_local_timers+0x120/0x120 [ 167.538327][ C1] rcu_gp_kthread+0xed8/0x1770 [ 167.543085][ C1] kthread+0x332/0x350 [ 167.547137][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 167.552232][ C1] ? kthread_blkcg+0xe0/0xe0 [ 167.556810][ C1] ret_from_fork+0x24/0x30