[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 44.171004][ T25] audit: type=1800 audit(1575411282.927:25): pid=8122 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 44.195756][ T25] audit: type=1800 audit(1575411282.927:26): pid=8122 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 44.236557][ T25] audit: type=1800 audit(1575411282.937:27): pid=8122 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 '10.128.10.32' (ECDSA) to the list of known hosts. 2019/12/03 22:14:51 fuzzer started 2019/12/03 22:14:52 dialing manager at 10.128.0.26:42111 2019/12/03 22:14:53 syscalls: 2689 2019/12/03 22:14:53 code coverage: enabled 2019/12/03 22:14:53 comparison tracing: enabled 2019/12/03 22:14:53 extra coverage: extra coverage is not supported by the kernel 2019/12/03 22:14:53 setuid sandbox: enabled 2019/12/03 22:14:53 namespace sandbox: enabled 2019/12/03 22:14:53 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 22:14:53 fault injection: enabled 2019/12/03 22:14:53 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 22:14:53 net packet injection: enabled 2019/12/03 22:14:53 net device setup: enabled 2019/12/03 22:14:53 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 22:14:53 devlink PCI setup: PCI device 0000:00:10.0 is not available 22:14:54 executing program 0: r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000080)='/dev/uinput\x00', 0x4000000000802, 0x0) write$uinput_user_dev(r0, &(0x7f0000000400)={'syz1\x00'}, 0x45c) ioctl$UI_SET_EVBIT(r0, 0x40045564, 0x12) ioctl$UI_SET_EVBIT(r0, 0x40045564, 0x2) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000040)={0xffffffffffffffff, 0xffffffffffffffff}) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) ioctl$UI_SET_RELBIT(r0, 0x40045566, 0x0) ioctl$UI_DEV_SETUP(r0, 0x5501, 0x0) 22:14:54 executing program 1: bpf$PROG_LOAD(0x5, &(0x7f0000000200)={0xc, 0xe, &(0x7f0000000380)=ANY=[@ANYBLOB="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"], &(0x7f0000000340)='GPL\x00'}, 0x1e) syzkaller login: [ 55.523590][ T8286] IPVS: ftp: loaded support on port[0] = 21 [ 55.580681][ T8288] IPVS: ftp: loaded support on port[0] = 21 [ 55.673884][ T8286] chnl_net:caif_netlink_parms(): no params data found [ 55.721662][ T8286] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.730804][ T8286] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.742224][ T8286] device bridge_slave_0 entered promiscuous mode [ 55.752048][ T8286] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.760247][ T8286] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.768715][ T8286] device bridge_slave_1 entered promiscuous mode 22:14:54 executing program 2: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) getsockopt$sock_linger(r0, 0x1, 0x38, 0x0, &(0x7f0000000080)) [ 55.793902][ T8286] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.830056][ T8286] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 55.870476][ T8286] team0: Port device team_slave_0 added [ 55.881539][ T8288] chnl_net:caif_netlink_parms(): no params data found [ 55.895710][ T8286] team0: Port device team_slave_1 added [ 55.977915][ T8286] device hsr_slave_0 entered promiscuous mode 22:14:54 executing program 3: r0 = socket$inet6(0xa, 0x6, 0x0) setsockopt$inet6_int(r0, 0x29, 0x1a, &(0x7f00000005c0)=0x1, 0x4) connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4}, 0x1c) [ 56.027357][ T8286] device hsr_slave_1 entered promiscuous mode [ 56.099587][ T8292] IPVS: ftp: loaded support on port[0] = 21 [ 56.127677][ T8288] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.135861][ T8288] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.143976][ T8288] device bridge_slave_0 entered promiscuous mode [ 56.171330][ T8288] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.185324][ T8288] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.193571][ T8288] device bridge_slave_1 entered promiscuous mode [ 56.242025][ T8288] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link 22:14:55 executing program 4: r0 = socket(0x2, 0x3, 0x67) ioctl$sock_kcm_SIOCKCMUNATTACH(r0, 0x89e1, &(0x7f00000001c0)) [ 56.294144][ T8286] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.360149][ T8288] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.381115][ T8294] IPVS: ftp: loaded support on port[0] = 21 [ 56.393416][ T8286] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.485069][ T8286] netdevsim netdevsim0 netdevsim2: renamed from eth2 22:14:55 executing program 5: r0 = socket$packet(0x11, 0x3, 0x300) r1 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='cpu.stat\x00', 0x275a, 0x0) mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x0, 0x10012, r1, 0x0) setsockopt$packet_fanout_data(r0, 0x107, 0x9, &(0x7f00000000c0)={0x0, 0x0}, 0x10) [ 56.549052][ T8286] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.623673][ T8288] team0: Port device team_slave_0 added [ 56.650393][ T8288] team0: Port device team_slave_1 added [ 56.671391][ T8296] IPVS: ftp: loaded support on port[0] = 21 [ 56.693330][ T8286] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.700859][ T8286] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.708713][ T8286] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.715957][ T8286] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.738406][ T2724] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.747763][ T2724] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.770147][ T8299] IPVS: ftp: loaded support on port[0] = 21 [ 56.847595][ T8288] device hsr_slave_0 entered promiscuous mode [ 56.905596][ T8288] device hsr_slave_1 entered promiscuous mode [ 56.955368][ T8288] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.963452][ T8292] chnl_net:caif_netlink_parms(): no params data found [ 57.058121][ T8288] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 57.128667][ T8288] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 57.184932][ T8288] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 57.229793][ T8288] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 57.287777][ T8292] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.295058][ T8292] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.303528][ T8292] device bridge_slave_0 entered promiscuous mode [ 57.332909][ T8292] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.340173][ T8292] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.347974][ T8292] device bridge_slave_1 entered promiscuous mode [ 57.416156][ T8292] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.433604][ T8292] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.458023][ T8296] chnl_net:caif_netlink_parms(): no params data found [ 57.489596][ T8294] chnl_net:caif_netlink_parms(): no params data found [ 57.511490][ T8299] chnl_net:caif_netlink_parms(): no params data found [ 57.525708][ T8292] team0: Port device team_slave_0 added [ 57.544424][ T8296] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.551705][ T8296] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.559819][ T8296] device bridge_slave_0 entered promiscuous mode [ 57.584246][ T8292] team0: Port device team_slave_1 added [ 57.592850][ T8296] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.600086][ T8296] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.608403][ T8296] device bridge_slave_1 entered promiscuous mode [ 57.640366][ T8286] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.650412][ T8294] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.658278][ T8294] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.666500][ T8294] device bridge_slave_0 entered promiscuous mode [ 57.694819][ T8296] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.717562][ T8286] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.724443][ T8294] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.732142][ T8294] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.740123][ T8294] device bridge_slave_1 entered promiscuous mode [ 57.787852][ T8292] device hsr_slave_0 entered promiscuous mode [ 57.845688][ T8292] device hsr_slave_1 entered promiscuous mode [ 57.915341][ T8292] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.924372][ T8296] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.933894][ T8299] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.941581][ T8299] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.949414][ T8299] device bridge_slave_0 entered promiscuous mode [ 57.961973][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.970766][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.985698][ T2724] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.994318][ T2724] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.003894][ T2724] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.011070][ T2724] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.019321][ T2724] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.028462][ T2724] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.036867][ T2724] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.043909][ T2724] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.064238][ T8299] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.072802][ T8299] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.081128][ T8299] device bridge_slave_1 entered promiscuous mode [ 58.111781][ T8294] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.124946][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.133848][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.158972][ T8296] team0: Port device team_slave_0 added [ 58.172255][ T8294] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.183642][ T8288] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.194902][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.203774][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.215076][ T8302] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.225320][ T8296] team0: Port device team_slave_1 added [ 58.233356][ T8299] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.259238][ T8294] team0: Port device team_slave_0 added [ 58.274528][ T8299] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.285694][ T8294] team0: Port device team_slave_1 added [ 58.294383][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.303919][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.316148][ T8292] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 58.367483][ T8292] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 58.428062][ T8292] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.507260][ T8292] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 58.538280][ T8302] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 58.547994][ T8302] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 58.563295][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.572319][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.584566][ T8299] team0: Port device team_slave_0 added [ 58.592264][ T8299] team0: Port device team_slave_1 added [ 58.606258][ T8286] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 58.618229][ T8286] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 58.678094][ T8296] device hsr_slave_0 entered promiscuous mode [ 58.715716][ T8296] device hsr_slave_1 entered promiscuous mode [ 58.755817][ T8296] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.777409][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 58.785875][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 58.796362][ T8288] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.857271][ T8294] device hsr_slave_0 entered promiscuous mode [ 58.925692][ T8294] device hsr_slave_1 entered promiscuous mode [ 58.965536][ T8294] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.047025][ T8299] device hsr_slave_0 entered promiscuous mode [ 59.085725][ T8299] device hsr_slave_1 entered promiscuous mode [ 59.125357][ T8299] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.134229][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.142959][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.151588][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.158723][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.167896][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.178263][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.186924][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.194612][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.202296][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.213063][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.285720][ T8296] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 59.336607][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.346325][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.353867][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.369810][ T8299] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 59.407544][ T8294] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 59.449903][ T8296] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 59.497664][ T8296] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 59.537024][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.546919][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.555505][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.564066][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.575853][ T8299] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 59.609928][ T8294] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 59.667519][ T8294] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 59.727631][ T8294] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 59.787244][ T8296] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 59.827814][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.837762][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.846468][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.855575][ T8299] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 59.879567][ T8299] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 59.929884][ T8286] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.950114][ T8288] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 59.962392][ T8288] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.989598][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.999271][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.008955][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.016970][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.034479][ T8292] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.057311][ T8288] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.090049][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.102731][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.112910][ T8292] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.193822][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 165.205149][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 165.211927][ C1] rcu: 1-...!: (10499 ticks this GP) idle=576/1/0x4000000000000002 softirq=11249/11250 fqs=0 [ 165.222717][ C1] (t=10500 jiffies g=6389 q=74) [ 165.227659][ C1] rcu: rcu_preempt kthread starved for 10500 jiffies! g6389 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 165.239344][ C1] rcu: RCU grace-period kthread stack dump: [ 165.245251][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 165.253309][ C1] Call Trace: [ 165.256634][ C1] __schedule+0x9a0/0xcc0 [ 165.261128][ C1] schedule+0x181/0x210 [ 165.265320][ C1] schedule_timeout+0x14f/0x240 [ 165.270171][ C1] ? run_local_timers+0x120/0x120 [ 165.275348][ C1] rcu_gp_kthread+0xed8/0x1770 [ 165.280119][ C1] kthread+0x332/0x350 [ 165.284208][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 165.289322][ C1] ? kthread_blkcg+0xe0/0xe0 [ 165.294049][ C1] ret_from_fork+0x24/0x30 [ 165.298506][ C1] NMI backtrace for cpu 1 [ 165.302865][ C1] CPU: 1 PID: 8288 Comm: syz-executor.1 Not tainted 5.4.0-syzkaller #0 [ 165.311095][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 165.321495][ C1] Call Trace: [ 165.324780][ C1] [ 165.327625][ C1] dump_stack+0x1fb/0x318 [ 165.331989][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 165.336840][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 165.342984][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 165.349050][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 165.355041][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 165.360955][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 165.366109][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 165.371315][ C1] ? trace_hardirqs_off+0x74/0x80 [ 165.376675][ C1] update_process_times+0x12d/0x180 [ 165.381893][ C1] tick_sched_timer+0x263/0x420 [ 165.386750][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 165.392322][ C1] __hrtimer_run_queues+0x403/0x840 [ 165.397555][ C1] hrtimer_interrupt+0x38c/0xda0 [ 165.402540][ C1] ? debug_smp_processor_id+0x9/0x20 [ 165.407827][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 165.413365][ C1] apic_timer_interrupt+0xf/0x20 [ 165.418291][ C1] [ 165.421223][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 [ 165.427280][ C1] Code: 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 53 48 89 fb e8 13 00 00 00 48 8b 3d 74 25 cd 07 48 89 de e8 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 [ 165.446888][ C1] RSP: 0018:ffffc90001d77400 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 165.455298][ C1] RAX: 1ffff11012ad30e1 RBX: ffffea0002a66b00 RCX: ffff88808f4b2000 [ 165.463261][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0002a66b00 [ 165.471225][ C1] RBP: ffffc90001d77440 R08: 000000000003a768 R09: ffffed1012504337 [ 165.479212][ C1] R10: ffffed1012504337 R11: 0000000000000000 R12: ffff8880956986a0 [ 165.487202][ C1] R13: dffffc0000000000 R14: 1ffff11012ad30d4 R15: ffff8880928219a8 [ 165.495380][ C1] ? free_thread_stack+0x124/0x590 [ 165.500765][ C1] put_task_stack+0xa3/0x130 [ 165.505380][ C1] finish_task_switch+0x3f1/0x550 [ 165.510408][ C1] __schedule+0x9a8/0xcc0 [ 165.514769][ C1] preempt_schedule_irq+0xc1/0x140 [ 165.520356][ C1] retint_kernel+0x1b/0x2b [ 165.524972][ C1] RIP: 0010:__memset+0x0/0x30 [ 165.529648][ C1] Code: 66 44 8b 1e 66 44 8b 54 16 fe 66 44 89 1f 66 44 89 54 17 fe eb 0c 48 83 fa 01 72 06 44 8a 1e 44 88 1f c3 cc cc cc cc cc cc cc 2e 0f 1f 00 49 89 f9 48 89 d1 83 e2 07 48 c1 e9 03 40 0f b6 f6 [ 165.549371][ C1] RSP: 0018:ffffc90001d77658 EFLAGS: 00000256 ORIG_RAX: ffffffffffffff13 [ 165.558157][ C1] RAX: ffff88808f4b2001 RBX: ffffc90001d77710 RCX: ffffffff81353c34 [ 165.566161][ C1] RDX: 0000000000000060 RSI: 0000000000000000 RDI: ffffc90001d77710 [ 165.574173][ C1] RBP: ffffc90001d77678 R08: dffffc0000000000 R09: fffff520003aeeee [ 165.582169][ C1] R10: fffff520003aeeee R11: 0000000000000000 R12: dffffc0000000000 [ 165.590162][ C1] R13: ffffc90001d77710 R14: 0000000000000000 R15: 0000000000000060 [ 165.598171][ C1] ? __unwind_start+0x34/0x440 [ 165.602952][ C1] ? memset+0x31/0x40 [ 165.606929][ C1] __unwind_start+0x34/0x440 [ 165.611658][ C1] ? stack_trace_save+0x150/0x150 [ 165.616680][ C1] ? __kernel_text_address+0x9a/0x110 [ 165.622060][ C1] ? stack_trace_save+0x150/0x150 [ 165.627112][ C1] arch_stack_walk+0x78/0xe0 [ 165.631717][ C1] stack_trace_save+0xb6/0x150 [ 165.636603][ C1] __kasan_kmalloc+0x11c/0x1b0 [ 165.641409][ C1] ? __kasan_kmalloc+0x11c/0x1b0 [ 165.646343][ C1] ? kasan_slab_alloc+0xf/0x20 [ 165.651128][ C1] ? kmem_cache_alloc_trace+0x1fa/0x2f0 [ 165.656677][ C1] ? memcg_kmem_get_cache+0x37a/0x590 [ 165.662191][ C1] ? kmem_cache_alloc+0x86/0x2e0 [ 165.667146][ C1] ? dup_mmap+0x587/0xe00 [ 165.671479][ C1] ? dup_mm+0x9e/0x340 [ 165.675555][ C1] ? copy_process+0x1e49/0x5510 [ 165.680393][ C1] ? _do_fork+0x13e/0x660 [ 165.684719][ C1] ? __x64_sys_clone+0x20b/0x250 [ 165.689647][ C1] ? do_syscall_64+0xf7/0x1c0 [ 165.694311][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 165.700379][ C1] ? __kasan_check_read+0x11/0x20 [ 165.705394][ C1] ? mark_lock+0x107/0x1650 [ 165.709892][ C1] ? rcu_lock_release+0x4/0x20 [ 165.714687][ C1] ? should_fail+0x153/0x770 [ 165.719281][ C1] ? lockdep_hardirqs_on+0x3c5/0x7d0 [ 165.724587][ C1] ? kmem_cache_alloc_trace+0x199/0x2f0 [ 165.730142][ C1] kasan_kmalloc+0x9/0x10 [ 165.734465][ C1] kmem_cache_alloc_trace+0x221/0x2f0 [ 165.739961][ C1] ? memcg_kmem_get_cache+0x37a/0x590 [ 165.745355][ C1] memcg_kmem_get_cache+0x37a/0x590 [ 165.750549][ C1] ? __should_failslab+0x11a/0x160 [ 165.755652][ C1] ? dup_mmap+0x587/0xe00 [ 165.760182][ C1] kmem_cache_alloc+0x86/0x2e0 [ 165.764977][ C1] dup_mmap+0x587/0xe00 [ 165.769141][ C1] dup_mm+0x9e/0x340 [ 165.773065][ C1] copy_process+0x1e49/0x5510 [ 165.777770][ C1] _do_fork+0x13e/0x660 [ 165.781953][ C1] ? check_preemption_disabled+0xb4/0x260 [ 165.787697][ C1] ? debug_smp_processor_id+0x9/0x20 [ 165.792985][ C1] ? debug_smp_processor_id+0x1c/0x20 [ 165.798354][ C1] __x64_sys_clone+0x20b/0x250 [ 165.803378][ C1] do_syscall_64+0xf7/0x1c0 [ 165.807876][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 165.813786][ C1] RIP: 0033:0x458c4a [ 165.817702][ C1] Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 [ 165.837323][ C1] RSP: 002b:00007ffc3c151a30 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 165.846035][ C1] RAX: ffffffffffffffda RBX: 00007ffc3c151a30 RCX: 0000000000458c4a [ 165.854008][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 165.862113][ C1] RBP: 00007ffc3c151a70 R08: 0000000000000001 R09: 0000000001919940 [ 165.870108][ C1] R10: 0000000001919c10 R11: 0000000000000246 R12: 0000000000000001 [ 165.878396][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffc3c151ac0