[ 43.361126][ T23] audit: type=1800 audit(1575402624.688:26): pid=8073 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 43.395148][ T23] audit: type=1800 audit(1575402624.688:27): pid=8073 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 43.415400][ T23] audit: type=1800 audit(1575402624.688:28): pid=8073 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. [ 43.829558][ T8138] sshd (8138) used greatest stack depth: 24024 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.242' (ECDSA) to the list of known hosts. 2019/12/03 19:50:35 fuzzer started 2019/12/03 19:50:36 dialing manager at 10.128.0.26:42111 2019/12/03 19:50:36 syscalls: 2689 2019/12/03 19:50:36 code coverage: enabled 2019/12/03 19:50:36 comparison tracing: enabled 2019/12/03 19:50:36 extra coverage: extra coverage is not supported by the kernel 2019/12/03 19:50:36 setuid sandbox: enabled 2019/12/03 19:50:36 namespace sandbox: enabled 2019/12/03 19:50:36 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 19:50:36 fault injection: enabled 2019/12/03 19:50:36 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 19:50:36 net packet injection: enabled 2019/12/03 19:50:36 net device setup: enabled 2019/12/03 19:50:36 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 19:50:36 devlink PCI setup: PCI device 0000:00:10.0 is not available 19:50:37 executing program 0: mkdir(&(0x7f0000000180)='./file0\x00', 0x0) r0 = openat$fuse(0xffffffffffffff9c, &(0x7f0000000080)='/dev/fuse\x00', 0x2, 0x0) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) r2 = fcntl$dupfd(r1, 0x0, r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) mount$fuse(0x0, &(0x7f0000000200)='./file0\x00', &(0x7f0000000300)='fuse\x00', 0x0, &(0x7f0000000500)={{'fd', 0x3d, r0}, 0x2c, {'rootmode', 0x3d, 0x4000}, 0x2c, {'user_id'}, 0x2c, {'group_id'}, 0x2c, {[{@default_permissions='default_permissions'}]}}) 19:50:37 executing program 1: r0 = bpf$PROG_LOAD(0x5, &(0x7f0000000200)={0x6, 0xe, &(0x7f00000002c0)=ANY=[@ANYBLOB="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"], &(0x7f0000000280)='\xd8e_\x9c\xb1\xb1\xd0\xca\xfe\xe8\xc6\xb7y\xc7\x1f\x1c \x828\xf8\xa2Q\x18\xa1\xed\x88MoS\xf6g\xdd\xa1IK\x80\x13(b\x85zO\xf3u\xa9\x9a\xfd `V\xcaRIU\xff\x8a\x80', 0x0, 0x0, 0x0, 0x0, 0x0, [], 0x0, 0x0, 0xffffffffffffffff, 0x8, &(0x7f0000000040), 0x0, 0x10, &(0x7f0000000000), 0xfd15}, 0x48) bpf$BPF_PROG_TEST_RUN(0xa, &(0x7f0000000080)={r0, 0x18000000000002a0, 0x2000051f, 0x0, &(0x7f0000000500)="b9ff0300000d698cb89e14f008000015ffff00000500638877fbac141414e9", 0x0, 0x100}, 0x28) syzkaller login: [ 56.583195][ T8236] IPVS: ftp: loaded support on port[0] = 21 [ 56.690201][ T8238] IPVS: ftp: loaded support on port[0] = 21 [ 56.765980][ T8236] chnl_net:caif_netlink_parms(): no params data found [ 56.804881][ T8236] bridge0: port 1(bridge_slave_0) entered blocking state 19:50:38 executing program 2: r0 = socket$inet6_sctp(0xa, 0x5, 0x84) shutdown(r0, 0x0) getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r0, 0x84, 0x6f, &(0x7f0000000100)={0x0, 0x10, &(0x7f0000000040)=[@in={0x2, 0x0, @dev}]}, &(0x7f0000000600)=0x10) setsockopt$inet_sctp6_SCTP_I_WANT_MAPPED_V4_ADDR(r0, 0x84, 0xc, &(0x7f0000000000), 0x4) getsockopt$inet_sctp6_SCTP_GET_ASSOC_STATS(r0, 0x84, 0x6c, &(0x7f0000000480)={r1, @in6={{0xa, 0x0, 0x0, @mcast1}}}, &(0x7f0000000140)=0x2d3) [ 56.812567][ T8236] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.821506][ T8236] device bridge_slave_0 entered promiscuous mode [ 56.831369][ T8236] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.839548][ T8236] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.848453][ T8236] device bridge_slave_1 entered promiscuous mode [ 56.877408][ T8236] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.888068][ T8236] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.922786][ T8236] team0: Port device team_slave_0 added [ 56.931187][ T8236] team0: Port device team_slave_1 added 19:50:38 executing program 3: r0 = socket$inet6_udp(0xa, 0x2, 0x0) r1 = socket$l2tp(0x18, 0x1, 0x1) connect$l2tp(r1, &(0x7f0000000040)=@pppol2tp={0x18, 0x1, {0x0, r0, {0x2, 0x0, @dev}, 0x4}}, 0x26) r2 = socket$l2tp(0x18, 0x1, 0x1) connect$l2tp(r2, &(0x7f0000000140)=@pppol2tpv3in6={0x18, 0x1, {0x0, 0xffffffffffffffff, 0x4, 0x2, 0x0, 0x0, {0xa, 0x0, 0x0, @mcast1}}}, 0x3a) setsockopt$l2tp_PPPOL2TP_SO_REORDERTO(r2, 0x111, 0x5, 0x20000000, 0x4) [ 57.097758][ T8236] device hsr_slave_0 entered promiscuous mode [ 57.175451][ T8236] device hsr_slave_1 entered promiscuous mode [ 57.236523][ T8241] IPVS: ftp: loaded support on port[0] = 21 19:50:38 executing program 4: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$SO_ATTACH_FILTER(r0, 0x1, 0x1a, &(0x7f0000fbe000)={0x2, &(0x7f0000000080)=[{0x30, 0x0, 0x0, 0xfffff010}, {0x80000006}]}, 0x10) r1 = socket(0x10, 0x803, 0x0) sendmsg$NBD_CMD_DISCONNECT(r1, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000180)={0x0}}, 0x0) [ 57.282366][ T8243] IPVS: ftp: loaded support on port[0] = 21 [ 57.347493][ T8238] chnl_net:caif_netlink_parms(): no params data found [ 57.387667][ T8236] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.457507][ T8236] netdevsim netdevsim0 netdevsim1: renamed from eth1 19:50:38 executing program 5: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c0, 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, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = syz_open_procfs(0x0, &(0x7f0000000000)='map_files\x00') getdents64(r0, &(0x7f00000045c0)=""/4087, 0xff7) getdents64(r0, 0x0, 0x0) [ 57.518273][ T8236] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.596867][ T8246] IPVS: ftp: loaded support on port[0] = 21 [ 57.603191][ T8236] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.678021][ T8238] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.687027][ T8238] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.689101][ T8248] IPVS: ftp: loaded support on port[0] = 21 [ 57.700869][ T8238] device bridge_slave_0 entered promiscuous mode [ 57.710356][ T8238] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.717761][ T8238] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.725719][ T8238] device bridge_slave_1 entered promiscuous mode [ 57.757642][ T8238] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.781705][ T8238] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.803548][ T8238] team0: Port device team_slave_0 added [ 57.811949][ T8238] team0: Port device team_slave_1 added [ 57.820041][ T8236] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.827219][ T8236] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.835131][ T8236] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.842199][ T8236] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.877843][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.886080][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.956714][ T8238] device hsr_slave_0 entered promiscuous mode [ 58.004525][ T8238] device hsr_slave_1 entered promiscuous mode [ 58.064404][ T8238] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.088505][ T8241] chnl_net:caif_netlink_parms(): no params data found [ 58.204866][ T8243] chnl_net:caif_netlink_parms(): no params data found [ 58.213577][ T8238] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 58.265858][ T8238] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 58.305973][ T8238] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 58.345554][ T8241] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.352621][ T8241] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.360527][ T8241] device bridge_slave_0 entered promiscuous mode [ 58.369708][ T8241] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.377218][ T8241] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.385210][ T8241] device bridge_slave_1 entered promiscuous mode [ 58.411831][ T8238] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 58.446105][ T8246] chnl_net:caif_netlink_parms(): no params data found [ 58.520356][ T8243] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.527691][ T8243] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.535809][ T8243] device bridge_slave_0 entered promiscuous mode [ 58.545074][ T8243] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.552132][ T8243] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.559819][ T8243] device bridge_slave_1 entered promiscuous mode [ 58.572683][ T8241] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.584772][ T8241] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.617676][ T8243] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.627300][ T8246] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.634842][ T8246] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.642399][ T8246] device bridge_slave_0 entered promiscuous mode [ 58.652685][ T8236] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.666584][ T8241] team0: Port device team_slave_0 added [ 58.674112][ T8241] team0: Port device team_slave_1 added [ 58.683491][ T8243] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.697402][ T8246] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.707175][ T8246] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.715067][ T8246] device bridge_slave_1 entered promiscuous mode [ 58.787190][ T8241] device hsr_slave_0 entered promiscuous mode [ 58.824673][ T8241] device hsr_slave_1 entered promiscuous mode [ 58.864604][ T8241] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.877099][ T8248] chnl_net:caif_netlink_parms(): no params data found [ 58.894973][ T8243] team0: Port device team_slave_0 added [ 58.904066][ T8243] team0: Port device team_slave_1 added [ 58.917511][ T8246] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.937843][ T8246] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.988863][ T8246] team0: Port device team_slave_0 added [ 58.996574][ T8246] team0: Port device team_slave_1 added [ 59.005865][ T8236] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.018410][ T8241] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 59.073473][ T8250] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.082082][ T8250] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.136953][ T8246] device hsr_slave_0 entered promiscuous mode [ 59.184680][ T8246] device hsr_slave_1 entered promiscuous mode [ 59.244346][ T8246] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.253271][ T8241] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 59.310147][ T8241] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 59.366247][ T8248] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.373313][ T8248] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.381818][ T8248] device bridge_slave_0 entered promiscuous mode [ 59.437001][ T8243] device hsr_slave_0 entered promiscuous mode [ 59.494668][ T8243] device hsr_slave_1 entered promiscuous mode [ 59.534307][ T8243] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.541969][ T8241] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 59.586968][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.596270][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.605153][ T44] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.612271][ T44] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.619909][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.629193][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.637588][ T44] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.644672][ T44] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.653865][ T8248] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.661527][ T8248] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.669409][ T8248] device bridge_slave_1 entered promiscuous mode [ 59.686633][ T8250] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.713891][ T8248] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.726333][ T8248] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.758423][ T8246] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 59.810078][ T8246] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 59.869050][ T8246] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 59.918088][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.927230][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.937664][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.946053][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.954879][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.963542][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.994714][ T8243] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 60.036604][ T8243] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 60.086596][ T8246] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 60.141192][ T8248] team0: Port device team_slave_0 added [ 60.149121][ T8238] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.156723][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.165184][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.174048][ T8243] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 60.219668][ T8243] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 60.278119][ T8248] team0: Port device team_slave_1 added [ 60.311675][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.320789][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.329743][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.337596][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.357690][ T8238] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.380034][ T8241] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.417479][ T8248] device hsr_slave_0 entered promiscuous mode [ 60.484530][ T8248] device hsr_slave_1 entered promiscuous mode [ 60.534354][ T8248] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.553321][ T8236] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.568211][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.576759][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.586443][ T44] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.593485][ T44] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.601845][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.626245][ T8241] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.635821][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.644027][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.655463][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.663888][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.672688][ T44] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.679781][ T44] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.687662][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.696263][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.705392][ T44] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.712428][ T44] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.722825][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.746991][ T8236] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.779669][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.796982][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.812673][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.820606][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.829336][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.837929][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.846705][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.855779][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.864085][ T2778] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.871215][ T2778] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.879169][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.888479][ T2778] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.919948][ T8248] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 60.967048][ T8248] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 165.984191][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 165.990979][ C0] rcu: 0-...!: (1 GPs behind) idle=e72/1/0x4000000000000002 softirq=10189/10190 fqs=39 [ 166.000943][ C0] (t=10500 jiffies g=6285 q=183) [ 166.005963][ C0] rcu: rcu_preempt kthread starved for 10419 jiffies! g6285 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 166.017058][ C0] rcu: RCU grace-period kthread stack dump: [ 166.022932][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 166.031017][ C0] Call Trace: [ 166.034304][ C0] __schedule+0x9a0/0xcc0 [ 166.038629][ C0] schedule+0x181/0x210 [ 166.042860][ C0] schedule_timeout+0x14f/0x240 [ 166.047699][ C0] ? run_local_timers+0x120/0x120 [ 166.052711][ C0] rcu_gp_kthread+0xed8/0x1770 [ 166.057476][ C0] kthread+0x332/0x350 [ 166.061528][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 166.066623][ C0] ? kthread_blkcg+0xe0/0xe0 [ 166.071198][ C0] ret_from_fork+0x24/0x30 [ 166.075627][ C0] NMI backtrace for cpu 0 [ 166.079950][ C0] CPU: 0 PID: 7920 Comm: udevd Not tainted 5.4.0-syzkaller #0 [ 166.087404][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 166.097452][ C0] Call Trace: [ 166.100727][ C0] [ 166.103574][ C0] dump_stack+0x1fb/0x318 [ 166.107896][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 166.112736][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 166.118892][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 166.124946][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 166.130918][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 166.136891][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 166.142145][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 166.147448][ C0] ? trace_hardirqs_off+0x74/0x80 [ 166.152470][ C0] update_process_times+0x12d/0x180 [ 166.157660][ C0] tick_sched_timer+0x263/0x420 [ 166.162590][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 166.168386][ C0] __hrtimer_run_queues+0x403/0x840 [ 166.173598][ C0] hrtimer_interrupt+0x38c/0xda0 [ 166.178544][ C0] ? debug_smp_processor_id+0x9/0x20 [ 166.183825][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 166.189379][ C0] apic_timer_interrupt+0xf/0x20 [ 166.194302][ C0] [ 166.197234][ C0] RIP: 0010:__memcg_kmem_uncharge+0x2e/0x2e0 [ 166.203205][ C0] Code: 41 57 41 56 41 55 41 54 53 50 89 f3 49 89 fc 48 b8 00 00 00 00 00 fc ff df 4c 8d 77 38 4d 89 f5 49 c1 ed 03 41 80 7c 05 00 00 <74> 08 4c 89 f7 e8 d8 f4 fa ff 4d 8b 3e b8 01 00 00 00 89 d9 d3 e0 [ 166.224446][ C0] RSP: 0018:ffffc90006c77720 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 166.233017][ C0] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff888097118280 [ 166.240974][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea000280e780 [ 166.248941][ C0] RBP: ffffc90006c77750 R08: dffffc0000000000 R09: fffffbfff120248a [ 166.256900][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: ffffea000280e780 [ 166.264860][ C0] R13: 1ffffd4000501cf7 R14: ffffea000280e7b8 R15: ffff8880938833e8 [ 166.272850][ C0] ? free_thread_stack+0x124/0x590 [ 166.278213][ C0] free_thread_stack+0x12e/0x590 [ 166.283149][ C0] put_task_stack+0xa3/0x130 [ 166.287724][ C0] finish_task_switch+0x3f1/0x550 [ 166.292737][ C0] __schedule+0x9a8/0xcc0 [ 166.297065][ C0] schedule+0x181/0x210 [ 166.301298][ C0] schedule_hrtimeout_range_clock+0x3c7/0x510 [ 166.307356][ C0] ? trace_hrtimer_expire_exit+0x2d0/0x2d0 [ 166.313154][ C0] schedule_hrtimeout_range+0x2a/0x40 [ 166.318514][ C0] poll_schedule_timeout+0x11c/0x1c0 [ 166.323790][ C0] do_sys_poll+0x82f/0x1240 [ 166.328298][ C0] ? debug_object_activate+0x2f7/0x6f0 [ 166.333750][ C0] ? debug_object_active_state+0x1e3/0x4a0 [ 166.339553][ C0] ? __lock_acquire+0xc75/0x1be0 [ 166.344486][ C0] ? __x32_compat_sys_ppoll_time64+0xd0/0xd0 [ 166.350468][ C0] ? trace_hardirqs_on+0x74/0x80 [ 166.355391][ C0] ? ktime_get_ts64+0x6e/0x2c0 [ 166.360148][ C0] ? ktime_get_ts64+0x6e/0x2c0 [ 166.364899][ C0] ? read_seqcount_begin+0x125/0x1c0 [ 166.370187][ C0] ? trace_hardirqs_on+0x74/0x80 [ 166.375111][ C0] ? ktime_get_ts64+0x6e/0x2c0 [ 166.379870][ C0] ? read_seqcount_begin+0x17a/0x1c0 [ 166.385151][ C0] ? ktime_get_ts64+0x240/0x2c0 [ 166.390088][ C0] ? timespec64_add_safe+0x171/0x1b0 [ 166.395464][ C0] __se_sys_poll+0x1b0/0x360 [ 166.400054][ C0] __x64_sys_poll+0x7b/0x90 [ 166.404547][ C0] do_syscall_64+0xf7/0x1c0 [ 166.409044][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 166.414939][ C0] RIP: 0033:0x7f11fa749678 [ 166.419342][ C0] Code: 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 90 90 90 48 83 ec 28 8b 05 82 8f 2b 00 85 c0 75 17 48 63 d2 b8 07 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 48 83 c4 28 c3 89 54 24 08 48 89 74 24 10 [ 166.438934][ C0] RSP: 002b:00007ffc7c457700 EFLAGS: 00000246 ORIG_RAX: 0000000000000007 [ 166.447343][ C0] RAX: ffffffffffffffda RBX: 20c49ba5e353f7cf RCX: 00007f11fa749678 [ 166.455306][ C0] RDX: 000000000000ee34 RSI: 0000000000000001 RDI: 00007ffc7c4577c0 [ 166.463265][ C0] RBP: 0000000000000000 R08: 00007ffc7c457710 R09: 00007ffc7c4d40b8 [ 166.471260][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001f71830 [ 166.479246][ C0] R13: 0000000000002040 R14: 00007ffc7c457794 R15: 0000000001f58250