[ 46.217987][ T23] audit: type=1800 audit(1575347929.453:26): pid=8195 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 46.277186][ T23] audit: type=1800 audit(1575347929.453:27): pid=8195 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 46.315418][ T23] audit: type=1800 audit(1575347929.453:28): pid=8195 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. [ 47.004258][ T23] audit: type=1800 audit(1575347930.253:29): pid=8195 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 '10.128.15.221' (ECDSA) to the list of known hosts. 2019/12/03 04:39:00 fuzzer started 2019/12/03 04:39:02 dialing manager at 10.128.0.26:38907 2019/12/03 04:39:02 syscalls: 2697 2019/12/03 04:39:02 code coverage: enabled 2019/12/03 04:39:02 comparison tracing: enabled 2019/12/03 04:39:02 extra coverage: extra coverage is not supported by the kernel 2019/12/03 04:39:02 setuid sandbox: enabled 2019/12/03 04:39:02 namespace sandbox: enabled 2019/12/03 04:39:02 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 04:39:02 fault injection: enabled 2019/12/03 04:39:02 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 04:39:02 net packet injection: enabled 2019/12/03 04:39:02 net device setup: enabled 2019/12/03 04:39:02 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 04:39:02 devlink PCI setup: PCI device 0000:00:10.0 is not available 04:39:03 executing program 0: r0 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000180)=@newlink={0x48, 0x10, 0x705, 0x0, 0x0, {}, [@IFLA_LINKINFO={0x28, 0x12, @erspan={{0xc, 0x1, 'erspan\x00'}, {0x18, 0x2, [@gre_common_policy=[@IFLA_GRE_COLLECT_METADATA={0x4}, @IFLA_GRE_IFLAGS={0x8}], @IFLA_GRE_REMOTE={0x8, 0x7, @local}]}}}]}, 0x48}}, 0x0) 04:39:03 executing program 1: bpf$MAP_CREATE(0x0, &(0x7f00000001c0)={0x15, 0x10, 0xffffffff, 0x0, 0x4}, 0x3c) syzkaller login: [ 60.683770][ T8358] IPVS: ftp: loaded support on port[0] = 21 04:39:04 executing program 2: mmap(&(0x7f0000000000/0xff5000)=nil, 0xff5000, 0x0, 0x4c831, 0xffffffffffffffff, 0x0) madvise(&(0x7f0000779000/0x600000)=nil, 0x600000, 0x4) [ 60.839030][ T8358] chnl_net:caif_netlink_parms(): no params data found [ 60.839627][ T8360] IPVS: ftp: loaded support on port[0] = 21 [ 60.967576][ T8358] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.974664][ T8358] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.987257][ T8358] device bridge_slave_0 entered promiscuous mode [ 60.995461][ T8358] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.002555][ T8358] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.010705][ T8358] device bridge_slave_1 entered promiscuous mode [ 61.062088][ T8363] IPVS: ftp: loaded support on port[0] = 21 [ 61.068273][ T8358] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.097445][ T8358] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.139571][ T8358] team0: Port device team_slave_0 added [ 61.155567][ T8358] team0: Port device team_slave_1 added [ 61.161481][ T8360] chnl_net:caif_netlink_parms(): no params data found 04:39:04 executing program 3: r0 = semget$private(0x0, 0x5, 0x0) semop(r0, &(0x7f00000000c0)=[{0x0, 0x7fff}], 0x1) semop(r0, &(0x7f0000000040)=[{0x3}, {0x0, 0x7ff}], 0x2) [ 61.259466][ T8358] device hsr_slave_0 entered promiscuous mode [ 61.307220][ T8358] device hsr_slave_1 entered promiscuous mode [ 61.381755][ T8367] IPVS: ftp: loaded support on port[0] = 21 [ 61.417604][ T8360] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.424689][ T8360] bridge0: port 1(bridge_slave_0) entered disabled state 04:39:04 executing program 4: r0 = socket$netlink(0x10, 0x3, 0x0) sendmsg$nl_route(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000180)=@newlink={0x50, 0x10, 0x705, 0x0, 0x0, {}, [@IFLA_MASTER={0x8, 0x29}, @IFLA_LINKINFO={0x14, 0x12, @veth={{0xc, 0x1, 'veth\x00'}, {0x18, 0x2, @VETH_INFO_PEER={0xa, 0x3, {0x2e}}}}}]}, 0x50}}, 0x0) [ 61.435421][ T8360] device bridge_slave_0 entered promiscuous mode [ 61.445356][ T8360] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.453132][ T8360] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.467417][ T8360] device bridge_slave_1 entered promiscuous mode [ 61.484680][ T8358] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 61.538804][ T8358] netdevsim netdevsim0 netdevsim1: renamed from eth1 04:39:04 executing program 5: r0 = socket$inet_udp(0x2, 0x2, 0x0) setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000000)='bridge0\x00', 0x3ee) connect$inet(r0, &(0x7f0000000140)={0x2, 0x0, @multicast1}, 0x10) setsockopt$inet_udp_int(r0, 0x11, 0x67, &(0x7f0000000100)=0x3, 0x4) sendmsg(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)=[{&(0x7f0000000340)='$\x00\x00\x00', 0x4}], 0x1}, 0x0) [ 61.709694][ T8358] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 61.749430][ T8358] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 61.864689][ T8360] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.876824][ T8360] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.921773][ T8369] IPVS: ftp: loaded support on port[0] = 21 [ 61.930241][ T8363] chnl_net:caif_netlink_parms(): no params data found [ 61.944761][ T8371] IPVS: ftp: loaded support on port[0] = 21 [ 61.959469][ T8360] team0: Port device team_slave_0 added [ 61.984823][ T8360] team0: Port device team_slave_1 added [ 62.019248][ T8363] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.026518][ T8363] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.034125][ T8363] device bridge_slave_0 entered promiscuous mode [ 62.088174][ T8360] device hsr_slave_0 entered promiscuous mode [ 62.126402][ T8360] device hsr_slave_1 entered promiscuous mode [ 62.167613][ T8360] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.180444][ T8363] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.187794][ T8363] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.195274][ T8363] device bridge_slave_1 entered promiscuous mode [ 62.245024][ T8363] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.257617][ T8363] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.281981][ T8363] team0: Port device team_slave_0 added [ 62.323405][ T8367] chnl_net:caif_netlink_parms(): no params data found [ 62.333440][ T8363] team0: Port device team_slave_1 added [ 62.339346][ T8360] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 62.377642][ T8360] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 62.429297][ T8360] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 62.539017][ T8363] device hsr_slave_0 entered promiscuous mode [ 62.586756][ T8363] device hsr_slave_1 entered promiscuous mode [ 62.656182][ T8363] debugfs: Directory 'hsr0' with parent '/' already present! [ 62.667544][ T8360] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 62.743147][ T8367] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.752797][ T8367] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.761240][ T8367] device bridge_slave_0 entered promiscuous mode [ 62.770941][ T8367] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.778185][ T8367] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.785901][ T8367] device bridge_slave_1 entered promiscuous mode [ 62.859455][ T8367] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.873169][ T8367] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.891130][ T8363] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 62.945203][ T8363] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 62.998243][ T8371] chnl_net:caif_netlink_parms(): no params data found [ 63.019001][ T8358] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.043489][ T8363] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 63.111772][ T8363] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 63.179282][ T8369] chnl_net:caif_netlink_parms(): no params data found [ 63.198388][ T8367] team0: Port device team_slave_0 added [ 63.206828][ T8367] team0: Port device team_slave_1 added [ 63.214290][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 63.223539][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.247444][ T8358] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.299151][ T8367] device hsr_slave_0 entered promiscuous mode [ 63.346699][ T8367] device hsr_slave_1 entered promiscuous mode [ 63.396241][ T8367] debugfs: Directory 'hsr0' with parent '/' already present! [ 63.410839][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.420302][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.428875][ T44] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.436062][ T44] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.478954][ T8369] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.486530][ T8369] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.494222][ T8369] device bridge_slave_0 entered promiscuous mode [ 63.502799][ T8364] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.510985][ T8364] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.519805][ T8364] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.528055][ T8364] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.535070][ T8364] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.543402][ T8371] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.551491][ T8371] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.559190][ T8371] device bridge_slave_0 entered promiscuous mode [ 63.567228][ T8371] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.574264][ T8371] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.582209][ T8371] device bridge_slave_1 entered promiscuous mode [ 63.591370][ T8367] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 63.637419][ T8369] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.644488][ T8369] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.655092][ T8369] device bridge_slave_1 entered promiscuous mode [ 63.679700][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.690297][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.699789][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 63.708462][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.717661][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.725301][ T8367] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 63.771233][ T8367] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 63.833707][ T8367] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 63.858657][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 63.867978][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.878458][ T8369] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.890698][ T8371] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.901960][ T8371] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.931589][ T8369] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.947771][ T8371] team0: Port device team_slave_0 added [ 63.970454][ T8363] 8021q: adding VLAN 0 to HW filter on device bond0 [ 63.979628][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 63.989627][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.000901][ T8371] team0: Port device team_slave_1 added [ 64.011579][ T8369] team0: Port device team_slave_0 added [ 64.019119][ T8369] team0: Port device team_slave_1 added [ 64.032863][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.041332][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.055011][ T8360] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.067162][ T8358] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.139479][ T8371] device hsr_slave_0 entered promiscuous mode [ 64.176479][ T8371] device hsr_slave_1 entered promiscuous mode [ 64.216223][ T8371] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.226316][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.233921][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.263122][ T8363] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.298991][ T8369] device hsr_slave_0 entered promiscuous mode [ 64.336407][ T8369] device hsr_slave_1 entered promiscuous mode [ 64.376176][ T8369] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.392041][ T8358] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.407866][ T8360] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.422685][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.430361][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.438283][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.445891][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.453826][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 64.462660][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.471462][ T3892] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.478650][ T3892] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.486559][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.495243][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.503665][ T3892] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.510731][ T3892] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.522268][ T3892] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.554486][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 64.565845][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.575646][ T44] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.582786][ T44] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.591522][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.600548][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.609045][ T44] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.616123][ T44] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.623702][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 64.632980][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 64.688914][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.713806][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.729012][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.742302][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 64.753289][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.769065][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.781285][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.793077][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.804680][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.819078][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 64.830747][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 64.842691][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.854342][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.868994][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 64.880507][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.891921][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.903108][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.914793][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.929455][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.941412][ T8363] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.975106][ T8360] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 64.993806][ T8360] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.023759][ T8360] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 65.086581][ T8369] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 169.726004][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 169.732831][ C0] rcu: 0-...!: (10499 ticks this GP) idle=98e/1/0x4000000000000002 softirq=12451/12451 fqs=19 [ 169.743445][ C0] (t=10501 jiffies g=6521 q=323) [ 169.748461][ C0] rcu: rcu_preempt kthread starved for 10463 jiffies! g6521 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 169.759566][ C0] rcu: RCU grace-period kthread stack dump: [ 169.765441][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 169.773330][ C0] Call Trace: [ 169.776622][ C0] __schedule+0x9a0/0xcc0 [ 169.780946][ C0] schedule+0x181/0x210 [ 169.785089][ C0] schedule_timeout+0x14f/0x240 [ 169.789926][ C0] ? run_local_timers+0x120/0x120 [ 169.794951][ C0] rcu_gp_kthread+0xed8/0x1770 [ 169.799714][ C0] kthread+0x332/0x350 [ 169.803768][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 169.808876][ C0] ? kthread_blkcg+0xe0/0xe0 [ 169.813455][ C0] ret_from_fork+0x24/0x30 [ 169.817879][ C0] NMI backtrace for cpu 0 [ 169.822201][ C0] CPU: 0 PID: 8007 Comm: udevd Not tainted 5.4.0-syzkaller #0 [ 169.829638][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 169.839693][ C0] Call Trace: [ 169.842975][ C0] [ 169.845818][ C0] dump_stack+0x1fb/0x318 [ 169.850146][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 169.854981][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 169.861123][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 169.867177][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 169.873148][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 169.879026][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 169.884128][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 169.889315][ C0] ? trace_hardirqs_off+0x74/0x80 [ 169.894440][ C0] update_process_times+0x12d/0x180 [ 169.899627][ C0] tick_sched_timer+0x263/0x420 [ 169.904463][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 169.909999][ C0] __hrtimer_run_queues+0x403/0x840 [ 169.915199][ C0] hrtimer_interrupt+0x38c/0xda0 [ 169.920140][ C0] ? debug_smp_processor_id+0x9/0x20 [ 169.925418][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 169.930956][ C0] apic_timer_interrupt+0xf/0x20 [ 169.935878][ C0] [ 169.938806][ C0] RIP: 0010:free_thread_stack+0x13d/0x590 [ 169.944521][ C0] Code: 00 00 e8 06 a2 60 00 e9 5d 04 00 00 e8 5c 2d 2e 00 48 89 df 31 f6 e8 42 af 6e 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 43 a4 69 00 <49> 8b 1c 24 48 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 [ 169.964113][ C0] RSP: 0018:ffffc90006bd7b10 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 169.972511][ C0] RAX: 0000000000000001 RBX: ffffea0002462280 RCX: 0000000000000000 [ 169.980573][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0002462280 [ 169.988549][ C0] RBP: ffffc90006bd7b48 R08: 000000000003a768 R09: ffffed101461fed7 [ 169.996534][ C0] R10: ffffed101461fed7 R11: 0000000000000000 R12: ffff8880a21469a0 [ 170.004500][ C0] R13: dffffc0000000000 R14: 1ffff11014428d34 R15: ffff8880a30ff6a8 [ 170.012495][ C0] put_task_stack+0xa3/0x130 [ 170.017080][ C0] finish_task_switch+0x3f1/0x550 [ 170.022096][ C0] __schedule+0x9a8/0xcc0 [ 170.026419][ C0] schedule+0x181/0x210 [ 170.030566][ C0] schedule_hrtimeout_range_clock+0x3c7/0x510 [ 170.036622][ C0] ? trace_hrtimer_expire_exit+0x2d0/0x2d0 [ 170.042444][ C0] schedule_hrtimeout_range+0x2a/0x40 [ 170.047805][ C0] ep_poll+0xa4d/0xe80 [ 170.051871][ C0] ? do_task_dead+0xc0/0xc0 [ 170.056365][ C0] ? __kasan_check_read+0x11/0x20 [ 170.061382][ C0] do_epoll_wait+0x1ee/0x260 [ 170.065959][ C0] __x64_sys_epoll_wait+0x9a/0xb0 [ 170.070971][ C0] do_syscall_64+0xf7/0x1c0 [ 170.075472][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 170.081356][ C0] RIP: 0033:0x7f18d5df9943 [ 170.085851][ C0] Code: 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 83 3d b5 dc 2a 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 3b c4 00 00 48 89 04 24 [ 170.105441][ C0] RSP: 002b:00007fff284bb758 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 [ 170.113852][ C0] RAX: ffffffffffffffda RBX: 0000000002413250 RCX: 00007f18d5df9943 [ 170.121811][ C0] RDX: 0000000000000004 RSI: 00007fff284bb820 RDI: 0000000000000007 [ 170.129768][ C0] RBP: 0000000000625500 R08: 00007fff284bb740 R09: 00007fff285040b8 [ 170.137748][ C0] R10: 000000000000ee41 R11: 0000000000000246 R12: 0000000002424af0 [ 170.145723][ C0] R13: 00007fff284bc877 R14: 0000000000000005 R15: 0000000002413250