[ 42.545806][ T25] audit: type=1800 audit(1575360061.141:27): pid=7971 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.565723][ T25] audit: type=1800 audit(1575360061.141:28): pid=7971 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. [ 43.045786][ T25] audit: type=1800 audit(1575360061.731:29): pid=7971 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 43.066869][ T25] audit: type=1800 audit(1575360061.741:30): pid=7971 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 '10.128.0.254' (ECDSA) to the list of known hosts. 2019/12/03 08:01:11 fuzzer started 2019/12/03 08:01:12 dialing manager at 10.128.0.26:38907 2019/12/03 08:01:12 syscalls: 2697 2019/12/03 08:01:12 code coverage: enabled 2019/12/03 08:01:12 comparison tracing: enabled 2019/12/03 08:01:12 extra coverage: extra coverage is not supported by the kernel 2019/12/03 08:01:12 setuid sandbox: enabled 2019/12/03 08:01:12 namespace sandbox: enabled 2019/12/03 08:01:12 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 08:01:12 fault injection: enabled 2019/12/03 08:01:12 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 08:01:12 net packet injection: enabled 2019/12/03 08:01:12 net device setup: enabled 2019/12/03 08:01:12 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 08:01:12 devlink PCI setup: PCI device 0000:00:10.0 is not available 08:01:13 executing program 0: syz_mount_image$vfat(&(0x7f0000000540)='vfat\x00', &(0x7f00000002c0)='./file0\x00', 0x0, 0x1, &(0x7f0000000380)=[{&(0x7f0000000100)="eb3c906d6b66732e666174000204010002000270fff8", 0xffdf}], 0x3, 0x0) 08:01:14 executing program 1: socket$inet6(0xa, 0x1, 0x0) pipe(&(0x7f0000000480)) openat$ptmx(0xffffffffffffff9c, &(0x7f00001f0000)='/dev/ptmx\x00', 0x0, 0x0) openat$cachefiles(0xffffffffffffff9c, &(0x7f0000000040)='/dev/cachefiles\x00', 0x0, 0x0) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 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, 0x0, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) pselect6(0x40, &(0x7f00000000c0), 0x0, &(0x7f0000000140)={0x1ff}, &(0x7f0000000200), 0x0) syzkaller login: [ 55.396926][ T8143] IPVS: ftp: loaded support on port[0] = 21 08:01:14 executing program 2: r0 = syz_open_dev$usbfs(&(0x7f0000000840)='/dev/bus/usb/00#/00#\x00', 0x908, 0x1) ioctl$USBDEVFS_SUBMITURB(r0, 0x8004550f, &(0x7f0000000040)=@urb_type_control={0x2, {}, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) [ 55.554330][ T8145] IPVS: ftp: loaded support on port[0] = 21 [ 55.564927][ T8143] chnl_net:caif_netlink_parms(): no params data found [ 55.602421][ T8143] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.611144][ T8143] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.619252][ T8143] device bridge_slave_0 entered promiscuous mode [ 55.629840][ T8143] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.636935][ T8143] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.645892][ T8143] device bridge_slave_1 entered promiscuous mode [ 55.699546][ T8143] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.729645][ T8143] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.804147][ T8143] team0: Port device team_slave_0 added [ 55.813282][ T8143] team0: Port device team_slave_1 added 08:01:14 executing program 3: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) mount(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f0000000100)='debugfs\x00', 0x0, 0x0) r0 = open(&(0x7f0000000140)='./file0\x00', 0x0, 0x0) lseek(r0, 0x0, 0x0) [ 55.880867][ T8143] device hsr_slave_0 entered promiscuous mode [ 55.968191][ T8143] device hsr_slave_1 entered promiscuous mode [ 56.018435][ T8145] chnl_net:caif_netlink_parms(): no params data found [ 56.032111][ T8149] IPVS: ftp: loaded support on port[0] = 21 [ 56.050788][ T8151] IPVS: ftp: loaded support on port[0] = 21 08:01:14 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_bp={0x0}}, 0x0, 0xffffff7fffffffff, 0xffffffffffffffff, 0x0) r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = socket$inet6(0xa, 0x2, 0x0) setsockopt$sock_int(r1, 0x1, 0xf, &(0x7f0000f59ffc)=0x4, 0x4) bind$inet6(r1, &(0x7f0000000480)={0xa, 0x0, 0x0, @mcast1, 0x2}, 0x1c) dup2(r0, r1) [ 56.156909][ T8145] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.164614][ T8145] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.188970][ T8145] device bridge_slave_0 entered promiscuous mode [ 56.196449][ T8143] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.262022][ T8143] netdevsim netdevsim0 netdevsim1: renamed from eth1 08:01:15 executing program 5: unshare(0x2a000400) r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='stat\t\xc0\xd2\xfe\xbc\xf9\xdf-\xea\xc8\xc1w\xff\x17\x12H\xe9\x11\x93Q0I\xf81U\ro}\xe6l\xf67\xbd\xbf\x13\x11\x92\f\x8a&\xed\xa4\xdc\xc3x?\x9d\xb5\x11k4\xd3\x1b\x05\x12\xa5`\x8a\xaf\xf0\x1eyR4\f\xd6\xfd\x00\x00\x00\x00', 0x275a, 0x0) r1 = creat(&(0x7f0000000140)='./file0\x00', 0x0) fallocate(r1, 0x0, 0x40000, 0x4) fallocate(r0, 0x0, 0x0, 0x110001) ioctl$EXT4_IOC_MOVE_EXT(r0, 0xc028660f, &(0x7f0000000040)={0xd000000, r1}) [ 56.354376][ T8145] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.365778][ T8145] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.374596][ T8145] device bridge_slave_1 entered promiscuous mode [ 56.391607][ T8143] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.431330][ T8143] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.495248][ T8153] IPVS: ftp: loaded support on port[0] = 21 [ 56.513034][ T8145] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.525520][ T8145] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.562012][ T8156] IPVS: ftp: loaded support on port[0] = 21 [ 56.581891][ T8143] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.589277][ T8143] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.597040][ T8143] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.604213][ T8143] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.616800][ T8145] team0: Port device team_slave_0 added [ 56.625520][ T8145] team0: Port device team_slave_1 added [ 56.645185][ T8154] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.653987][ T8154] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.770359][ T8145] device hsr_slave_0 entered promiscuous mode [ 56.808355][ T8145] device hsr_slave_1 entered promiscuous mode [ 56.848112][ T8145] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.895925][ T8151] chnl_net:caif_netlink_parms(): no params data found [ 56.906573][ T8149] chnl_net:caif_netlink_parms(): no params data found [ 57.009793][ T8151] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.017122][ T8151] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.027403][ T8151] device bridge_slave_0 entered promiscuous mode [ 57.037506][ T8151] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.044759][ T8151] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.052644][ T8151] device bridge_slave_1 entered promiscuous mode [ 57.059866][ T8145] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 57.124067][ T8145] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 57.170456][ T8145] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 57.226744][ T8149] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.234081][ T8149] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.242478][ T8149] device bridge_slave_0 entered promiscuous mode [ 57.281783][ T8145] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 57.352924][ T8149] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.361884][ T8149] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.371437][ T8149] device bridge_slave_1 entered promiscuous mode [ 57.382749][ T8151] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.394025][ T8153] chnl_net:caif_netlink_parms(): no params data found [ 57.424154][ T8151] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.457288][ T8153] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.464563][ T8153] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.472685][ T8153] device bridge_slave_0 entered promiscuous mode [ 57.481805][ T8149] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.493610][ T8149] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.503056][ T8156] chnl_net:caif_netlink_parms(): no params data found [ 57.521533][ T8153] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.529048][ T8153] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.536764][ T8153] device bridge_slave_1 entered promiscuous mode [ 57.561633][ T8149] team0: Port device team_slave_0 added [ 57.570517][ T8143] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.578575][ T8149] team0: Port device team_slave_1 added [ 57.586165][ T8151] team0: Port device team_slave_0 added [ 57.604781][ T8151] team0: Port device team_slave_1 added [ 57.617635][ T8153] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.680313][ T8149] device hsr_slave_0 entered promiscuous mode [ 57.709000][ T8149] device hsr_slave_1 entered promiscuous mode [ 57.748033][ T8149] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.771781][ T8153] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.799848][ T8143] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.851896][ T8151] device hsr_slave_0 entered promiscuous mode [ 57.908526][ T8151] device hsr_slave_1 entered promiscuous mode [ 57.948321][ T8151] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.964503][ T8154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.973559][ T8154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.981484][ T8154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.990707][ T8154] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.999332][ T8154] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.006427][ T8154] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.030729][ T8145] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.048756][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.058699][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.067155][ T8162] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.075578][ T8162] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.083927][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.092636][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.101083][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.110432][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.119633][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.127225][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.146287][ T8153] team0: Port device team_slave_0 added [ 58.152572][ T8156] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.163802][ T8156] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.172214][ T8156] device bridge_slave_0 entered promiscuous mode [ 58.180419][ T8156] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.187544][ T8156] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.195523][ T8156] device bridge_slave_1 entered promiscuous mode [ 58.209538][ T8145] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.219404][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.227226][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.236185][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.244982][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.253753][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.267265][ T8153] team0: Port device team_slave_1 added [ 58.330913][ T8153] device hsr_slave_0 entered promiscuous mode [ 58.378947][ T8153] device hsr_slave_1 entered promiscuous mode [ 58.428070][ T8153] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.451513][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.460092][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.492075][ T8156] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.504872][ T8143] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.514523][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 58.524527][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.534151][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.541444][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.549734][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.558568][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.566925][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.574416][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.582222][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.592890][ T8149] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 58.654502][ T8156] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.684017][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.694129][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.706508][ T8149] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 58.770157][ T8149] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.802199][ T8156] team0: Port device team_slave_0 added [ 58.809876][ T8156] team0: Port device team_slave_1 added [ 58.830096][ T8151] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 58.892447][ T8149] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 59.001092][ T8156] device hsr_slave_0 entered promiscuous mode [ 59.058392][ T8156] device hsr_slave_1 entered promiscuous mode [ 59.098289][ T8156] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.106543][ T8153] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 59.159604][ T8151] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 59.199821][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.207298][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.222678][ T8143] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.236961][ T8153] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 59.279261][ T8151] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 59.322241][ T8151] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 59.360555][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.369359][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.391752][ T8153] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 59.459491][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.471060][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.480055][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.489323][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.497525][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.505877][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.514140][ T8162] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.527602][ T8153] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 164.557845][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 164.564702][ C1] rcu: 1-...!: (10499 ticks this GP) idle=6c6/1/0x4000000000000002 softirq=11882/11882 fqs=0 [ 164.575600][ C1] (t=10500 jiffies g=6089 q=40) [ 164.580555][ C1] rcu: rcu_preempt kthread starved for 10500 jiffies! g6089 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 164.592259][ C1] rcu: RCU grace-period kthread stack dump: [ 164.599103][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 164.607031][ C1] Call Trace: [ 164.610513][ C1] __schedule+0x9a0/0xcc0 [ 164.614961][ C1] schedule+0x181/0x210 [ 164.619120][ C1] schedule_timeout+0x14f/0x240 [ 164.624107][ C1] ? run_local_timers+0x120/0x120 [ 164.629161][ C1] rcu_gp_kthread+0xed8/0x1770 [ 164.633932][ C1] kthread+0x332/0x350 [ 164.637991][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 164.643092][ C1] ? kthread_blkcg+0xe0/0xe0 [ 164.647688][ C1] ret_from_fork+0x24/0x30 [ 164.652216][ C1] NMI backtrace for cpu 1 [ 164.656887][ C1] CPU: 1 PID: 8113 Comm: udevd Not tainted 5.4.0-syzkaller #0 [ 164.664332][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 164.674401][ C1] Call Trace: [ 164.677684][ C1] [ 164.680715][ C1] dump_stack+0x1fb/0x318 [ 164.685056][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 164.689897][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 164.696134][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 164.702193][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 164.708198][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 164.714340][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 164.719447][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 164.724652][ C1] ? trace_hardirqs_off+0x74/0x80 [ 164.729772][ C1] update_process_times+0x12d/0x180 [ 164.734963][ C1] tick_sched_timer+0x263/0x420 [ 164.739805][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 164.745344][ C1] __hrtimer_run_queues+0x403/0x840 [ 164.750575][ C1] hrtimer_interrupt+0x38c/0xda0 [ 164.755523][ C1] ? debug_smp_processor_id+0x9/0x20 [ 164.760802][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 164.766339][ C1] apic_timer_interrupt+0xf/0x20 [ 164.771434][ C1] [ 164.774366][ C1] RIP: 0010:__memcg_kmem_uncharge+0x0/0x2e0 [ 164.780550][ C1] Code: 00 eb 1b 83 3d 40 90 8c 07 00 74 12 48 81 c3 08 02 00 00 48 89 df 4c 89 f6 e8 dc 7d ff ff 5b 41 5e 5d c3 0f 1f 80 00 00 00 00 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 50 89 f3 49 89 fc 48 b8 00 [ 164.800246][ C1] RSP: 0018:ffffc90001dd7758 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 164.808820][ C1] RAX: ffffffff81486ea4 RBX: ffffea000243b500 RCX: ffff888098c2c000 [ 164.817054][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea000243b500 [ 164.825199][ C1] RBP: ffffc90001dd7798 R08: dffffc0000000000 R09: fffffbfff120248a [ 164.833156][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff8880a0742220 [ 164.841396][ C1] R13: dffffc0000000000 R14: 1ffff110140e8444 R15: ffff8880a825f568 [ 164.849471][ C1] ? free_thread_stack+0x124/0x590 [ 164.854574][ C1] ? free_thread_stack+0x12e/0x590 [ 164.860108][ C1] put_task_stack+0xa3/0x130 [ 164.864918][ C1] finish_task_switch+0x3f1/0x550 [ 164.869942][ C1] __schedule+0x9a8/0xcc0 [ 164.874358][ C1] schedule+0x181/0x210 [ 164.878802][ C1] schedule_hrtimeout_range_clock+0x3c7/0x510 [ 164.885030][ C1] ? trace_hrtimer_expire_exit+0x2d0/0x2d0 [ 164.891259][ C1] schedule_hrtimeout_range+0x2a/0x40 [ 164.896807][ C1] poll_schedule_timeout+0x11c/0x1c0 [ 164.902092][ C1] do_sys_poll+0x82f/0x1240 [ 164.906605][ C1] ? debug_object_activate+0x2f7/0x6f0 [ 164.912150][ C1] ? debug_object_active_state+0x1e3/0x4a0 [ 164.917952][ C1] ? __lock_acquire+0xc75/0x1be0 [ 164.922881][ C1] ? __x32_compat_sys_ppoll_time64+0xd0/0xd0 [ 164.929810][ C1] ? trace_hardirqs_on+0x74/0x80 [ 164.934739][ C1] ? ktime_get_ts64+0x6e/0x2c0 [ 164.939504][ C1] ? ktime_get_ts64+0x6e/0x2c0 [ 164.944277][ C1] ? read_seqcount_begin+0x125/0x1c0 [ 164.949551][ C1] ? trace_hardirqs_on+0x74/0x80 [ 164.954484][ C1] ? ktime_get_ts64+0x6e/0x2c0 [ 164.959241][ C1] ? read_seqcount_begin+0x17a/0x1c0 [ 164.964516][ C1] ? ktime_get_ts64+0x240/0x2c0 [ 164.969361][ C1] ? timespec64_add_safe+0x171/0x1b0 [ 164.974650][ C1] __se_sys_poll+0x1b0/0x360 [ 164.979237][ C1] __x64_sys_poll+0x7b/0x90 [ 164.983732][ C1] do_syscall_64+0xf7/0x1c0 [ 164.988223][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 164.994112][ C1] RIP: 0033:0x7ff731b23678 [ 164.998777][ C1] Code: 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 90 90 90 48 83 ec 28 8b 05 82 8f 2b 00 85 c0 75 17 48 63 d2 b8 07 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 48 83 c4 28 c3 89 54 24 08 48 89 74 24 10 [ 165.019288][ C1] RSP: 002b:00007ffc664014d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000007 [ 165.027702][ C1] RAX: ffffffffffffffda RBX: 20c49ba5e353f7cf RCX: 00007ff731b23678 [ 165.036118][ C1] RDX: 000000000000ee32 RSI: 0000000000000001 RDI: 00007ffc66401590 [ 165.044099][ C1] RBP: 0000000000000000 R08: 00007ffc664014e0 R09: 00007ffc665c80b8 [ 165.053190][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000024c72d0 [ 165.061412][ C1] R13: 0000000000001fe4 R14: 00007ffc66401564 R15: 00000000024c7250