[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 43.412317][ T23] audit: type=1800 audit(1575393927.958:25): pid=8007 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 43.431138][ T23] audit: type=1800 audit(1575393927.958:26): pid=8007 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 43.456440][ T23] audit: type=1800 audit(1575393927.958:27): pid=8007 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 '10.128.0.146' (ECDSA) to the list of known hosts. 2019/12/03 17:25:38 fuzzer started 2019/12/03 17:25:40 dialing manager at 10.128.0.26:42111 2019/12/03 17:25:40 syscalls: 2689 2019/12/03 17:25:40 code coverage: enabled 2019/12/03 17:25:40 comparison tracing: enabled 2019/12/03 17:25:40 extra coverage: extra coverage is not supported by the kernel 2019/12/03 17:25:40 setuid sandbox: enabled 2019/12/03 17:25:40 namespace sandbox: enabled 2019/12/03 17:25:40 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 17:25:40 fault injection: enabled 2019/12/03 17:25:40 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 17:25:40 net packet injection: enabled 2019/12/03 17:25:40 net device setup: enabled 2019/12/03 17:25:40 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 17:25:40 devlink PCI setup: PCI device 0000:00:10.0 is not available 17:25:41 executing program 0: 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) socketpair(0x11, 0x3, 0x0, &(0x7f0000000000)) 17:25:41 executing program 1: socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000001440)={0xffffffffffffffff, 0xffffffffffffffff}) close(r1) recvfrom(r0, 0x0, 0x0, 0x40000040, &(0x7f0000000100)=@vsock={0x28, 0x0, 0x0, @my=0x0}, 0x712000) syzkaller login: [ 57.045427][ T8170] IPVS: ftp: loaded support on port[0] = 21 17:25:41 executing program 2: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = socket(0x10, 0x2, 0x0) setsockopt$netlink_NETLINK_TX_RING(r2, 0x10e, 0xc, &(0x7f0000000040)={0x7ff}, 0x272) write(r2, &(0x7f000018efdc)="2400000052001f0014f9f407000904000200071010000100feffffff0800000000000000", 0x24) [ 57.204306][ T8170] chnl_net:caif_netlink_parms(): no params data found [ 57.243999][ T8173] IPVS: ftp: loaded support on port[0] = 21 [ 57.281112][ T8170] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.289459][ T8170] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.307911][ T8170] device bridge_slave_0 entered promiscuous mode [ 57.339100][ T8170] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.346185][ T8170] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.368219][ T8170] device bridge_slave_1 entered promiscuous mode 17:25:42 executing program 3: sendmsg$nl_generic(0xffffffffffffffff, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000002c0)={0x14, 0x40000000000013, 0xfffffffffffffffb, 0x0, 0x0, {0x1}}, 0x14}, 0x1, 0x68}, 0x0) r0 = socket(0x10, 0x800000000080002, 0x10) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) r2 = dup2(r1, r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) sendmmsg$alg(r0, &(0x7f0000000140), 0x4924924924925b9, 0x0) [ 57.439310][ T8170] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.469208][ T8170] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.545383][ T8175] IPVS: ftp: loaded support on port[0] = 21 [ 57.555506][ T8170] team0: Port device team_slave_0 added [ 57.611215][ T8170] team0: Port device team_slave_1 added [ 57.645117][ T8173] chnl_net:caif_netlink_parms(): no params data found [ 57.658092][ T8178] IPVS: ftp: loaded support on port[0] = 21 17:25:42 executing program 4: r0 = socket$inet6(0xa, 0x803, 0x1) bind$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty}, 0x1c) [ 57.729391][ T8170] device hsr_slave_0 entered promiscuous mode [ 57.767464][ T8170] device hsr_slave_1 entered promiscuous mode 17:25:42 executing program 5: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = socket(0x15, 0x80005, 0x0) getsockopt(r1, 0x200000000114, 0x2710, &(0x7f0000c35fff)=""/1, &(0x7f0000000000)=0xf000) r2 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) r3 = socket(0x15, 0x80005, 0x0) getsockopt(r3, 0x200000000114, 0x2710, &(0x7f0000c35fff)=""/1, &(0x7f0000000000)=0xf002) [ 57.982043][ T8170] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.040369][ T8170] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.128318][ T8173] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.135428][ T8173] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.144139][ T8173] device bridge_slave_0 entered promiscuous mode [ 58.153622][ T8173] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.160808][ T8173] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.168492][ T8173] device bridge_slave_1 entered promiscuous mode [ 58.188301][ T8182] IPVS: ftp: loaded support on port[0] = 21 [ 58.189243][ T8170] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 58.202824][ T8180] IPVS: ftp: loaded support on port[0] = 21 [ 58.219967][ T8170] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.301006][ T8173] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.323593][ T8173] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.346354][ T8173] team0: Port device team_slave_0 added [ 58.382589][ T8173] team0: Port device team_slave_1 added [ 58.435459][ T8175] chnl_net:caif_netlink_parms(): no params data found [ 58.518153][ T8173] device hsr_slave_0 entered promiscuous mode [ 58.576673][ T8173] device hsr_slave_1 entered promiscuous mode [ 58.656580][ T8173] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.696016][ T8175] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.703222][ T8175] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.711661][ T8175] device bridge_slave_0 entered promiscuous mode [ 58.723400][ T8178] chnl_net:caif_netlink_parms(): no params data found [ 58.736093][ T8175] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.743560][ T8175] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.751261][ T8175] device bridge_slave_1 entered promiscuous mode [ 58.800721][ T8182] chnl_net:caif_netlink_parms(): no params data found [ 58.844741][ T8175] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.873108][ T8182] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.883460][ T8182] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.891209][ T8182] device bridge_slave_0 entered promiscuous mode [ 58.910080][ T8175] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.927450][ T8182] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.934504][ T8182] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.942950][ T8182] device bridge_slave_1 entered promiscuous mode [ 58.961635][ T8178] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.968766][ T8178] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.978877][ T8178] device bridge_slave_0 entered promiscuous mode [ 58.991391][ T8178] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.998777][ T8178] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.007168][ T8178] device bridge_slave_1 entered promiscuous mode [ 59.015200][ T8173] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 59.082625][ T8173] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 59.131767][ T8173] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 59.200918][ T8178] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.212941][ T8173] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 59.259706][ T8175] team0: Port device team_slave_0 added [ 59.268604][ T8182] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.278306][ T8180] chnl_net:caif_netlink_parms(): no params data found [ 59.288243][ T8178] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.305429][ T8175] team0: Port device team_slave_1 added [ 59.316204][ T8182] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.372213][ T8182] team0: Port device team_slave_0 added [ 59.380915][ T8182] team0: Port device team_slave_1 added [ 59.404586][ T8178] team0: Port device team_slave_0 added [ 59.412413][ T8178] team0: Port device team_slave_1 added [ 59.421217][ T8180] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.428782][ T8180] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.436643][ T8180] device bridge_slave_0 entered promiscuous mode [ 59.444414][ T8180] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.451527][ T8180] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.459462][ T8180] device bridge_slave_1 entered promiscuous mode [ 59.508244][ T8182] device hsr_slave_0 entered promiscuous mode [ 59.556805][ T8182] device hsr_slave_1 entered promiscuous mode [ 59.596512][ T8182] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.639284][ T8175] device hsr_slave_0 entered promiscuous mode [ 59.687078][ T8175] device hsr_slave_1 entered promiscuous mode [ 59.726626][ T8175] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.828169][ T8178] device hsr_slave_0 entered promiscuous mode [ 59.877502][ T8178] device hsr_slave_1 entered promiscuous mode [ 59.916532][ T8178] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.941149][ T8170] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.948359][ T8182] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 59.982206][ T8182] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 60.030559][ T8180] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.039844][ T8182] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 60.089357][ T8182] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 60.159049][ T8180] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.180617][ T8180] team0: Port device team_slave_0 added [ 60.202600][ T8173] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.216182][ T8180] team0: Port device team_slave_1 added [ 60.289481][ T8180] device hsr_slave_0 entered promiscuous mode [ 60.326904][ T8180] device hsr_slave_1 entered promiscuous mode [ 60.376552][ T8180] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.394557][ T8173] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.401957][ T8175] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 60.438121][ T8178] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 60.488898][ T8178] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 60.554160][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.562491][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.570521][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.578994][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.599083][ T8175] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 60.658071][ T8178] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 60.698628][ T8178] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 60.770509][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.781905][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.790852][ T8183] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.798065][ T8183] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.806161][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.816582][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.824879][ T8183] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.831956][ T8183] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.840225][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.848526][ T8175] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 60.890043][ T8170] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.910073][ T8175] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 60.952644][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.962887][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.971735][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.978832][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.993512][ T8180] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 61.042631][ T3208] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.050556][ T3208] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.060041][ T3208] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.069900][ T3208] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.079213][ T3208] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.088799][ T3208] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.095945][ T3208] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.103642][ T3208] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.112517][ T3208] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.120945][ T3208] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.129384][ T3208] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.138671][ T3208] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.152582][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.161447][ T8180] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.209630][ T8180] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 61.259606][ T8180] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 61.329368][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.338139][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.348363][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.356809][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.364952][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.373767][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.382849][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.391818][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.401495][ T8173] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.420018][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.428729][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.469188][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.479314][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.487845][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.496024][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.505953][ T8170] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.526334][ T8182] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.540331][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.550025][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.561014][ T8173] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.592073][ T8175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.602956][ T8182] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.633208][ T8170] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.644368][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.653871][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.663914][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.672726][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.681359][ T8183] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.688474][ T8183] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.696138][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.704185][ T8183] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.723834][ T8175] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.742372][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.755595][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 61.764737][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.779369][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.786482][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.799068][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 166.806373][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 166.813206][ C0] rcu: 0-...!: (10500 ticks this GP) idle=d2a/1/0x4000000000000002 softirq=10921/10921 fqs=0 [ 166.823700][ C0] (t=10501 jiffies g=6449 q=54) [ 166.828629][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g6449 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 166.839881][ C0] rcu: RCU grace-period kthread stack dump: [ 166.845753][ C0] rcu_preempt I29032 10 2 0x80004000 [ 166.852075][ C0] Call Trace: [ 166.855397][ C0] __schedule+0x9a0/0xcc0 [ 166.859725][ C0] schedule+0x181/0x210 [ 166.863865][ C0] schedule_timeout+0x14f/0x240 [ 166.868700][ C0] ? run_local_timers+0x120/0x120 [ 166.873712][ C0] rcu_gp_kthread+0xed8/0x1770 [ 166.878472][ C0] kthread+0x332/0x350 [ 166.882521][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 166.887616][ C0] ? kthread_blkcg+0xe0/0xe0 [ 166.892189][ C0] ret_from_fork+0x24/0x30 [ 166.896632][ C0] NMI backtrace for cpu 0 [ 166.900947][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.4.0-syzkaller #0 [ 166.908642][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 166.918680][ C0] Call Trace: [ 166.921946][ C0] [ 166.924783][ C0] dump_stack+0x1fb/0x318 [ 166.929104][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 166.933952][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 166.940089][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 166.946141][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 166.952110][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 166.957985][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 166.963087][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 166.968274][ C0] ? trace_hardirqs_off+0x74/0x80 [ 166.973286][ C0] update_process_times+0x12d/0x180 [ 166.978473][ C0] tick_sched_timer+0x263/0x420 [ 166.983307][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 166.988859][ C0] __hrtimer_run_queues+0x403/0x840 [ 166.994055][ C0] hrtimer_interrupt+0x38c/0xda0 [ 166.998996][ C0] ? debug_smp_processor_id+0x9/0x20 [ 167.004269][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 167.009799][ C0] apic_timer_interrupt+0xf/0x20 [ 167.014716][ C0] [ 167.017657][ C0] RIP: 0010:free_thread_stack+0x133/0x590 [ 167.023362][ C0] Code: 00 ea ff ff 48 01 c7 be 03 00 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 [ 167.042947][ C0] RSP: 0018:ffffc90000cffcb0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 167.051343][ C0] RAX: 0000000000000001 RBX: ffffea0002a4ee00 RCX: 0000000000000000 [ 167.059298][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0002a4ee00 [ 167.067692][ C0] RBP: ffffc90000cffce8 R08: dffffc0000000000 R09: fffffbfff12877ed [ 167.075649][ C0] R10: fffffbfff12877ed R11: 0000000000000000 R12: ffff8880a6cee920 [ 167.083604][ C0] R13: dffffc0000000000 R14: 1ffff11014d9dd24 R15: ffff888092903468 [ 167.091584][ C0] put_task_stack+0xa3/0x130 [ 167.096162][ C0] finish_task_switch+0x3f1/0x550 [ 167.101174][ C0] __schedule+0x9a8/0xcc0 [ 167.105497][ C0] schedule+0x181/0x210 [ 167.109641][ C0] smpboot_thread_fn+0x65f/0x9a0 [ 167.114574][ C0] kthread+0x332/0x350 [ 167.118624][ C0] ? cpu_report_death+0x120/0x120 [ 167.123628][ C0] ? kthread_blkcg+0xe0/0xe0 [ 167.128206][ C0] ret_from_fork+0x24/0x30 [ 167.132783][ C0] Sending NMI from CPU 0 to CPUs 1: [ 167.138254][ C1] NMI backtrace for cpu 1 [ 167.138258][ C1] CPU: 1 PID: 8191 Comm: blkid Not tainted 5.4.0-syzkaller #0 [ 167.138262][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 167.138264][ C1] RIP: 0010:free_thread_stack+0x177/0x590 [ 167.138270][ C1] Code: 80 3c 28 00 74 08 48 89 df e8 25 a4 69 00 48 8b 3b be fc ff ff ff e8 28 04 00 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 09 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 [ 167.138272][ C1] RSP: 0018:ffffc90002227b98 EFLAGS: 00000246 [ 167.138277][ C1] RAX: ffffffff81487433 RBX: ffff8880a3a02988 RCX: ffff8880965d4340 [ 167.138281][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0002917940 [ 167.138283][ C1] RBP: ffffc90002227bd0 R08: dffffc0000000000 R09: fffffbfff12877ed [ 167.138286][ C1] R10: fffffbfff12877ed R11: 0000000000000000 R12: ffff8880a3a02a20 [ 167.138289][ C1] R13: dffffc0000000000 R14: 1ffff11014740544 R15: ffff8880a920fa28 [ 167.138292][ C1] FS: 00007fb508dc1740(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 [ 167.138294][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 167.138297][ C1] CR2: 0000000000712000 CR3: 00000000a99ef000 CR4: 00000000001406e0 [ 167.138300][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 167.138303][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 167.138305][ C1] Call Trace: [ 167.138307][ C1] put_task_stack+0xa3/0x130 [ 167.138309][ C1] finish_task_switch+0x3f1/0x550 [ 167.138311][ C1] __schedule+0x9a8/0xcc0 [ 167.138313][ C1] ? ___preempt_schedule+0x16/0x18 [ 167.138315][ C1] preempt_schedule+0xdb/0x120 [ 167.138317][ C1] ___preempt_schedule+0x16/0x18 [ 167.138319][ C1] ? do_exit+0x1431/0x2020 [ 167.138321][ C1] _raw_write_unlock_irq+0x77/0x80 [ 167.138323][ C1] do_exit+0x1431/0x2020 [ 167.138325][ C1] do_group_exit+0x15c/0x2b0 [ 167.138327][ C1] __do_sys_exit_group+0x17/0x20 [ 167.138329][ C1] __se_sys_exit_group+0x14/0x20 [ 167.138331][ C1] __x64_sys_exit_group+0x3b/0x40 [ 167.138333][ C1] do_syscall_64+0xf7/0x1c0 [ 167.138335][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 167.138337][ C1] RIP: 0033:0x7fb5086a51e8 [ 167.138339][ C1] Code: Bad RIP value. [ 167.138341][ C1] RSP: 002b:00007ffca551f7c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 167.138347][ C1] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fb5086a51e8 [ 167.138350][ C1] RDX: 0000000000000002 RSI: 000000000000003c RDI: 0000000000000002 [ 167.138352][ C1] RBP: 00007fb50897a840 R08: 00000000000000e7 R09: ffffffffffffffa8 [ 167.138355][ C1] R10: 00007fb508980740 R11: 0000000000000246 R12: 00007fb50897a840 [ 167.138358][ C1] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000