[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 43.399716][ T23] audit: type=1800 audit(1575418758.518:25): pid=8082 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 43.424659][ T23] audit: type=1800 audit(1575418758.518:26): pid=8082 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 43.467619][ T23] audit: type=1800 audit(1575418758.528:27): pid=8082 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 '10.128.0.102' (ECDSA) to the list of known hosts. 2019/12/04 00:19:28 fuzzer started 2019/12/04 00:19:30 dialing manager at 10.128.0.26:42111 2019/12/04 00:19:30 syscalls: 2689 2019/12/04 00:19:30 code coverage: enabled 2019/12/04 00:19:30 comparison tracing: enabled 2019/12/04 00:19:30 extra coverage: extra coverage is not supported by the kernel 2019/12/04 00:19:30 setuid sandbox: enabled 2019/12/04 00:19:30 namespace sandbox: enabled 2019/12/04 00:19:30 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 00:19:30 fault injection: enabled 2019/12/04 00:19:30 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 00:19:30 net packet injection: enabled 2019/12/04 00:19:30 net device setup: enabled 2019/12/04 00:19:30 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 00:19:30 devlink PCI setup: PCI device 0000:00:10.0 is not available 00:19:31 executing program 0: r0 = perf_event_open(&(0x7f0000000180)={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) perf_event_open(&(0x7f0000000400)={0x2, 0x70, 0x0, 0x9, 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, 0x9, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0x0, r0, 0xb) 00:19:31 executing program 1: r0 = socket$kcm(0x10, 0x2, 0x10) sendmsg$kcm(r0, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000080)=[{&(0x7f00000000c0)="140000002a000502d25a0004000000000200fc00", 0x14}], 0x1}, 0x0) syzkaller login: [ 56.522514][ T8245] IPVS: ftp: loaded support on port[0] = 21 [ 56.658496][ T8245] chnl_net:caif_netlink_parms(): no params data found 00:19:31 executing program 2: lstat(&(0x7f00000000c0)='.\x00', &(0x7f0000000100)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) setresgid(0x0, 0x0, r0) r1 = socket$inet_udplite(0x2, 0x2, 0x88) getsockopt$sock_cred(r1, 0x1, 0x11, &(0x7f00000001c0)={0x0, 0x0}, &(0x7f0000000200)=0x7) setreuid(0x0, r2) lstat(&(0x7f00000000c0)='.\x00', &(0x7f0000000100)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) setresgid(0x0, 0x0, r3) [ 56.739375][ T8245] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.753906][ T8245] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.775515][ T8245] device bridge_slave_0 entered promiscuous mode [ 56.798147][ T8245] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.810162][ T8245] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.819498][ T8245] device bridge_slave_1 entered promiscuous mode [ 56.838739][ T8249] IPVS: ftp: loaded support on port[0] = 21 [ 56.876254][ T8245] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.899000][ T8245] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.962915][ T8245] team0: Port device team_slave_0 added [ 56.972214][ T8245] team0: Port device team_slave_1 added 00:19:32 executing program 3: perf_event_open(&(0x7f000025c000)={0x2, 0x70, 0x5aeb, 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_bp={0x0}}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = socket$inet_dccp(0x2, 0x6, 0x0) getsockopt$inet_int(r0, 0x10d, 0xd4, &(0x7f0000000000), &(0x7f00000000c0)=0x4) [ 57.030106][ T8250] IPVS: ftp: loaded support on port[0] = 21 [ 57.117080][ T8245] device hsr_slave_0 entered promiscuous mode [ 57.165521][ T8245] device hsr_slave_1 entered promiscuous mode [ 57.208349][ T8249] chnl_net:caif_netlink_parms(): no params data found 00:19:32 executing program 4: r0 = socket$nl_crypto(0x10, 0x3, 0x15) sendmsg$nl_crypto(r0, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000000140)={&(0x7f00000001c0)=@upd={0xe0, 0x10, 0x690ee9b7eac96905, 0x0, 0x0, {{'drbg-pr_-ha1(-(\x02\x00'}}}, 0xe0}}, 0x0) [ 57.293778][ T8253] IPVS: ftp: loaded support on port[0] = 21 [ 57.307478][ T8249] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.324391][ T8249] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.332106][ T8249] device bridge_slave_0 entered promiscuous mode [ 57.367501][ T8249] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.384292][ T8249] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.392202][ T8249] device bridge_slave_1 entered promiscuous mode [ 57.453650][ T8245] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.523870][ T8249] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.552628][ T8249] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.564620][ T8245] netdevsim netdevsim0 netdevsim1: renamed from eth1 00:19:32 executing program 5: r0 = socket$inet6(0xa, 0x400000000001, 0x0) close(r0) r1 = socket$inet6_sctp(0xa, 0x801, 0x84) setsockopt$inet_sctp_SCTP_SOCKOPT_BINDX_ADD(r1, 0x84, 0x64, &(0x7f0000cf6fe4)=[@in6={0xa, 0x4e23, 0x0, @loopback}], 0x1c) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) connect$inet6(r1, &(0x7f0000000080)={0xa, 0x4e23, 0x0, @loopback}, 0x1c) r2 = open(&(0x7f0000000080)='./bus\x00', 0x141042, 0x0) setsockopt$inet_sctp6_SCTP_DEFAULT_PRINFO(r1, 0x84, 0x72, &(0x7f0000000100)={0x0, 0x0, 0x10}, 0xc) setsockopt$inet_sctp6_SCTP_EVENTS(r1, 0x84, 0xb, &(0x7f0000000180)={0x0, 0x0, 0x0, 0x3}, 0xb) ftruncate(r2, 0x200004) sendfile(r0, r2, 0x0, 0x80001d00c0d0) [ 57.607100][ T8245] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.680134][ T8255] IPVS: ftp: loaded support on port[0] = 21 [ 57.692727][ T8245] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.752251][ T8249] team0: Port device team_slave_0 added [ 57.760830][ T8249] team0: Port device team_slave_1 added [ 57.800899][ T8258] IPVS: ftp: loaded support on port[0] = 21 [ 57.856041][ T8249] device hsr_slave_0 entered promiscuous mode [ 57.905322][ T8249] device hsr_slave_1 entered promiscuous mode [ 57.944407][ T8249] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.040194][ T8253] chnl_net:caif_netlink_parms(): no params data found [ 58.069312][ T8250] chnl_net:caif_netlink_parms(): no params data found [ 58.108259][ T8249] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 58.172020][ T8249] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 58.217645][ T8249] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 58.274797][ T8250] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.281892][ T8250] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.291567][ T8250] device bridge_slave_0 entered promiscuous mode [ 58.301417][ T8250] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.309024][ T8250] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.317033][ T8250] device bridge_slave_1 entered promiscuous mode [ 58.331805][ T8245] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.338923][ T8249] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 58.395760][ T8253] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.402843][ T8253] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.411282][ T8253] device bridge_slave_0 entered promiscuous mode [ 58.421273][ T8253] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.428424][ T8253] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.436168][ T8253] device bridge_slave_1 entered promiscuous mode [ 58.492724][ T8250] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.505680][ T8250] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.547548][ T8253] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.561052][ T8245] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.570328][ T8250] team0: Port device team_slave_0 added [ 58.597913][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.606763][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.616020][ T8253] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.637110][ T8250] team0: Port device team_slave_1 added [ 58.643164][ T8255] chnl_net:caif_netlink_parms(): no params data found [ 58.675780][ T8258] chnl_net:caif_netlink_parms(): no params data found [ 58.690334][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 58.702235][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.710737][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.717920][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.729160][ T8253] team0: Port device team_slave_0 added [ 58.740615][ T8253] team0: Port device team_slave_1 added [ 58.769113][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.778103][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.786941][ T3139] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.795359][ T3139] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.802393][ T3139] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.867557][ T8250] device hsr_slave_0 entered promiscuous mode [ 58.894628][ T8250] device hsr_slave_1 entered promiscuous mode [ 58.944454][ T8250] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.972187][ T8255] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.979506][ T8255] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.988742][ T8255] device bridge_slave_0 entered promiscuous mode [ 59.000811][ T8255] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.008204][ T8255] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.016605][ T8255] device bridge_slave_1 entered promiscuous mode [ 59.026539][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.036096][ T8258] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.043153][ T8258] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.051195][ T8258] device bridge_slave_0 entered promiscuous mode [ 59.096290][ T8253] device hsr_slave_0 entered promiscuous mode [ 59.144849][ T8253] device hsr_slave_1 entered promiscuous mode [ 59.204451][ T8253] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.223557][ T8255] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.241636][ T8258] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.249830][ T8258] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.258070][ T8258] device bridge_slave_1 entered promiscuous mode [ 59.272991][ T8255] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.292432][ T8249] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.303374][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.312659][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.321350][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.330863][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.351967][ T8258] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.377374][ T8255] team0: Port device team_slave_0 added [ 59.386992][ T8255] team0: Port device team_slave_1 added [ 59.401048][ T8258] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.439001][ T8250] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 59.488138][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.496895][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.557628][ T8255] device hsr_slave_0 entered promiscuous mode [ 59.594816][ T8255] device hsr_slave_1 entered promiscuous mode [ 59.634371][ T8255] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.645578][ T8258] team0: Port device team_slave_0 added [ 59.652067][ T8250] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 59.728453][ T8249] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.736694][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.744821][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.752433][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.760811][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.782198][ T8258] team0: Port device team_slave_1 added [ 59.788978][ T8250] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 59.841656][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.850017][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.861034][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.869668][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.878171][ T3960] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.885252][ T3960] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.896289][ T3960] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.910397][ T8245] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.919827][ T8250] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 59.980888][ T8253] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 60.028188][ T8264] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.037162][ T8264] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.046047][ T8264] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.053083][ T8264] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.069222][ T8255] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 60.117104][ T8255] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 60.162486][ T8253] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 60.206305][ T8253] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 60.258419][ T8255] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 60.296139][ T8255] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 60.348913][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.358230][ T8253] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 60.466505][ T8258] device hsr_slave_0 entered promiscuous mode [ 60.504649][ T8258] device hsr_slave_1 entered promiscuous mode [ 60.544371][ T8258] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.586440][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.595172][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.603820][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.612466][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.621627][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.629961][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.637452][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.653308][ T8249] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 60.665209][ T8249] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 60.696855][ T8245] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.703870][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.712687][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.721076][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.730095][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.738740][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.748203][ T8257] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.765925][ T8258] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 60.810779][ T8258] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 60.897900][ T8249] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.929933][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.938039][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.956239][ T8258] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 61.004096][ T8250] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.019191][ T8258] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 61.116947][ T8250] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.198264][ T8258] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.219319][ T8258] 8021q: adding VLAN 0 to HW filter on device team0 [ 166.144191][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 166.151029][ C0] rcu: 0-...!: (10499 ticks this GP) idle=bfe/1/0x4000000000000002 softirq=11206/11206 fqs=4 [ 166.161529][ C0] (t=10500 jiffies g=6593 q=288) [ 166.166547][ C0] rcu: rcu_preempt kthread starved for 10492 jiffies! g6593 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 166.177626][ C0] rcu: RCU grace-period kthread stack dump: [ 166.183500][ C0] rcu_preempt R running task 28992 10 2 0x80004000 [ 166.191390][ C0] Call Trace: [ 166.194675][ C0] __schedule+0x9a0/0xcc0 [ 166.198998][ C0] schedule+0x181/0x210 [ 166.203138][ C0] schedule_timeout+0x14f/0x240 [ 166.207979][ C0] ? run_local_timers+0x120/0x120 [ 166.213000][ C0] rcu_gp_kthread+0xed8/0x1770 [ 166.217761][ C0] kthread+0x332/0x350 [ 166.221933][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 166.227053][ C0] ? kthread_blkcg+0xe0/0xe0 [ 166.231661][ C0] ret_from_fork+0x24/0x30 [ 166.236087][ C0] NMI backtrace for cpu 0 [ 166.240506][ C0] CPU: 0 PID: 8269 Comm: blkid Not tainted 5.4.0-syzkaller #0 [ 166.247949][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 166.258004][ C0] Call Trace: [ 166.261278][ C0] [ 166.264125][ C0] dump_stack+0x1fb/0x318 [ 166.268453][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 166.273289][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 166.279431][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 166.285490][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 166.291482][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 166.297381][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 166.302622][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 166.307826][ C0] ? trace_hardirqs_off+0x74/0x80 [ 166.312846][ C0] update_process_times+0x12d/0x180 [ 166.318048][ C0] tick_sched_timer+0x263/0x420 [ 166.322891][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 166.328429][ C0] __hrtimer_run_queues+0x403/0x840 [ 166.333634][ C0] hrtimer_interrupt+0x38c/0xda0 [ 166.338583][ C0] ? debug_smp_processor_id+0x9/0x20 [ 166.343857][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 166.349387][ C0] apic_timer_interrupt+0xf/0x20 [ 166.354303][ C0] [ 166.357230][ C0] RIP: 0010:free_thread_stack+0x124/0x590 [ 166.362936][ C0] Code: ff 48 c1 e8 06 48 83 e0 c0 48 bf 00 00 00 00 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 [ 166.382523][ C0] RSP: 0018:ffffc900026279f0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 166.390921][ C0] RAX: ffffffff81486ea4 RBX: ffffea0002337e80 RCX: ffff8880a8632640 [ 166.398884][ C0] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0002337e80 [ 166.406855][ C0] RBP: ffffc90002627a28 R08: 000000000003a768 R09: ffffed1014e23ae7 [ 166.414842][ C0] R10: ffffed1014e23ae7 R11: 0000000000000000 R12: ffff8880a49553a0 [ 166.422838][ C0] R13: dffffc0000000000 R14: 1ffff1101492aa74 R15: ffff8880a711d728 [ 166.430844][ C0] ? free_thread_stack+0x124/0x590 [ 166.435960][ C0] put_task_stack+0xa3/0x130 [ 166.440541][ C0] finish_task_switch+0x3f1/0x550 [ 166.445582][ C0] __schedule+0x9a8/0xcc0 [ 166.449955][ C0] ? ___preempt_schedule+0x16/0x18 [ 166.455090][ C0] preempt_schedule+0xdb/0x120 [ 166.459850][ C0] ___preempt_schedule+0x16/0x18 [ 166.464782][ C0] _raw_spin_unlock_irqrestore+0xcc/0xe0 [ 166.470427][ C0] __wake_up_sync_key+0xe2/0x150 [ 166.475374][ C0] pipe_release+0x17b/0x330 [ 166.479863][ C0] ? fifo_open+0xc70/0xc70 [ 166.484283][ C0] __fput+0x2e4/0x740 [ 166.488275][ C0] ____fput+0x15/0x20 [ 166.492248][ C0] task_work_run+0x17e/0x1b0 [ 166.496845][ C0] do_exit+0x5c4/0x2020 [ 166.501029][ C0] ? check_preemption_disabled+0xb4/0x260 [ 166.506751][ C0] do_group_exit+0x15c/0x2b0 [ 166.511365][ C0] __do_sys_exit_group+0x17/0x20 [ 166.516297][ C0] __se_sys_exit_group+0x14/0x20 [ 166.521259][ C0] __x64_sys_exit_group+0x3b/0x40 [ 166.526277][ C0] do_syscall_64+0xf7/0x1c0 [ 166.530780][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 166.536801][ C0] RIP: 0033:0x7f30f6db71e8 [ 166.541223][ C0] Code: Bad RIP value. [ 166.545285][ C0] RSP: 002b:00007ffdb1369cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 166.553690][ C0] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f30f6db71e8 [ 166.561670][ C0] RDX: 0000000000000002 RSI: 000000000000003c RDI: 0000000000000002 [ 166.569654][ C0] RBP: 00007f30f708c840 R08: 00000000000000e7 R09: ffffffffffffffa8 [ 166.577730][ C0] R10: 00007f30f7092740 R11: 0000000000000246 R12: 00007f30f708c840 [ 166.585702][ C0] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000