[ 42.081016][ T25] audit: type=1800 audit(1575368222.566:26): pid=8016 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.102577][ T25] audit: type=1800 audit(1575368222.566:27): pid=8016 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.102596][ T25] audit: type=1800 audit(1575368222.566:28): pid=8016 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 42.948327][ T25] audit: type=1800 audit(1575368223.446:29): pid=8016 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.224' (ECDSA) to the list of known hosts. 2019/12/03 10:17:13 fuzzer started 2019/12/03 10:17:15 dialing manager at 10.128.0.26:38907 2019/12/03 10:17:15 syscalls: 2697 2019/12/03 10:17:15 code coverage: enabled 2019/12/03 10:17:15 comparison tracing: enabled 2019/12/03 10:17:15 extra coverage: extra coverage is not supported by the kernel 2019/12/03 10:17:15 setuid sandbox: enabled 2019/12/03 10:17:15 namespace sandbox: enabled 2019/12/03 10:17:15 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 10:17:15 fault injection: enabled 2019/12/03 10:17:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 10:17:15 net packet injection: enabled 2019/12/03 10:17:15 net device setup: enabled 2019/12/03 10:17:15 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 10:17:15 devlink PCI setup: PCI device 0000:00:10.0 is not available 10:17:16 executing program 0: prctl$PR_SET_PTRACER(0x59616d61, 0xffffffffffffffff) clone(0x100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = gettid() wait4(0x0, 0x0, 0x80000002, 0x0) vmsplice(0xffffffffffffffff, &(0x7f00000000c0)=[{0x0}, {0x0}, {0x0, 0xfffffffffffffde8}, {&(0x7f00000001c0)="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", 0x135}], 0x100000000000011e, 0x0) ptrace$setopts(0x4206, r0, 0x0, 0x0) tkill(r0, 0x3c) ptrace$cont(0x18, r0, 0x0, 0x0) ptrace$setregs(0xd, r0, 0x0, &(0x7f0000000080)) ptrace$cont(0x20, r0, 0x0, 0x0) 10:17:16 executing program 1: r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1) r1 = socket(0xa, 0x2, 0x0) getsockopt$sock_cred(r1, 0x1, 0x11, &(0x7f0000caaffb)={0x0, 0x0}, &(0x7f0000cab000)=0xa) setreuid(0x0, r2) r3 = fcntl$dupfd(r0, 0x0, r0) ioctl$RNDADDTOENTCNT(r3, 0x40045201, 0x0) bind$bt_rfcomm(r3, &(0x7f0000000000)={0x1f, {0xffffffffffffffff, 0x1ff, 0x3}}, 0xa) syzkaller login: [ 56.227150][ T8184] IPVS: ftp: loaded support on port[0] = 21 10:17:16 executing program 2: creat(&(0x7f0000000040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RLERRORu(r1, &(0x7f0000000340)=ANY=[@ANYBLOB="1c00000007ffff0f00fb36b7f08c169e6bb085a70e69"], 0x16) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000100)='9p\x00', 0x0, &(0x7f0000000280)={'trans=fd,', {'rfdno', 0x3d, r0}, 0x2c, {'wfdno', 0x3d, r1}, 0x2c, {[{@noextend='noextend'}]}}) [ 56.384891][ T8184] chnl_net:caif_netlink_parms(): no params data found [ 56.404035][ T8187] IPVS: ftp: loaded support on port[0] = 21 [ 56.473426][ T8184] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.483713][ T8184] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.492035][ T8184] device bridge_slave_0 entered promiscuous mode [ 56.512476][ T8184] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.521192][ T8184] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.529646][ T8184] device bridge_slave_1 entered promiscuous mode [ 56.616105][ T8187] chnl_net:caif_netlink_parms(): no params data found [ 56.631468][ T8191] IPVS: ftp: loaded support on port[0] = 21 [ 56.640311][ T8184] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link 10:17:17 executing program 3: bpf$PROG_LOAD(0x5, &(0x7f0000000180)={0x9, 0x4, &(0x7f0000000000)=@framed={{}, [@call={0x61, 0x11, 0x10}]}, &(0x7f00000000c0)='GPL\x00', 0x4, 0x1000, &(0x7f0000000200)=""/4096, 0x0, 0x0, [], 0x0, 0x0, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0}, 0x70) [ 56.672791][ T8184] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.695075][ T8187] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.702296][ T8187] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.710154][ T8187] device bridge_slave_0 entered promiscuous mode [ 56.750155][ T8187] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.757245][ T8187] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.779546][ T8187] device bridge_slave_1 entered promiscuous mode [ 56.819847][ T8184] team0: Port device team_slave_0 added [ 56.828315][ T8184] team0: Port device team_slave_1 added [ 56.855150][ T8187] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.899180][ T8187] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 10:17:17 executing program 4: r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0) setsockopt$inet6_MRT6_DEL_MFC_PROXY(0xffffffffffffffff, 0x29, 0xd3, &(0x7f0000000100)={{0xa, 0x0, 0x0, @dev}, {0xa, 0x0, 0x0, @initdev={0xfe, 0x88, [], 0x0, 0x0}}}, 0x5c) shutdown(r0, 0x0) recvmmsg(r0, &(0x7f0000000080), 0x72a, 0x0, 0x0) write(r0, 0x0, 0x0) [ 56.942291][ T8184] device hsr_slave_0 entered promiscuous mode [ 56.999530][ T8184] device hsr_slave_1 entered promiscuous mode [ 57.087414][ T8193] IPVS: ftp: loaded support on port[0] = 21 [ 57.169934][ T8187] team0: Port device team_slave_0 added [ 57.197433][ T8196] IPVS: ftp: loaded support on port[0] = 21 10:17:17 executing program 5: r0 = syz_open_procfs(0x0, &(0x7f0000000040)='net/tcp\x00') r1 = syz_init_net_socket$netrom(0x6, 0x5, 0x0) sendfile(r1, r0, 0x0, 0x80000005) [ 57.229861][ T8191] chnl_net:caif_netlink_parms(): no params data found [ 57.247182][ T8187] team0: Port device team_slave_1 added [ 57.306722][ T8184] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.352431][ T8184] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.423423][ T8184] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.492490][ T8184] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.560164][ T8198] IPVS: ftp: loaded support on port[0] = 21 [ 57.602959][ T8187] device hsr_slave_0 entered promiscuous mode [ 57.659112][ T8187] device hsr_slave_1 entered promiscuous mode [ 57.718916][ T8187] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.754165][ T8191] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.762388][ T8191] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.770179][ T8191] device bridge_slave_0 entered promiscuous mode [ 57.800861][ T8191] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.807935][ T8191] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.816098][ T8191] device bridge_slave_1 entered promiscuous mode [ 57.878030][ T8193] chnl_net:caif_netlink_parms(): no params data found [ 57.889271][ T8191] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.898470][ T8187] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 57.943382][ T8187] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 58.001647][ T8187] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 58.048379][ T8191] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.075911][ T8187] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 58.149451][ T8191] team0: Port device team_slave_0 added [ 58.192180][ T8191] team0: Port device team_slave_1 added [ 58.211838][ T8196] chnl_net:caif_netlink_parms(): no params data found [ 58.233407][ T8193] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.240643][ T8193] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.248241][ T8193] device bridge_slave_0 entered promiscuous mode [ 58.321460][ T8191] device hsr_slave_0 entered promiscuous mode [ 58.359174][ T8191] device hsr_slave_1 entered promiscuous mode [ 58.398824][ T8191] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.424924][ T8193] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.432100][ T8193] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.439796][ T8193] device bridge_slave_1 entered promiscuous mode [ 58.477371][ T8193] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.524067][ T8196] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.532160][ T8196] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.540050][ T8196] device bridge_slave_0 entered promiscuous mode [ 58.547634][ T8196] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.554772][ T8196] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.564694][ T8196] device bridge_slave_1 entered promiscuous mode [ 58.577346][ T8193] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.588319][ T8191] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 58.657611][ T8191] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 58.726980][ T8196] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.749641][ T8193] team0: Port device team_slave_0 added [ 58.756890][ T8191] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.783161][ T8196] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.802308][ T8198] chnl_net:caif_netlink_parms(): no params data found [ 58.814025][ T8193] team0: Port device team_slave_1 added [ 58.821493][ T8187] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.840406][ T8191] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 58.882264][ T8196] team0: Port device team_slave_0 added [ 58.951584][ T8193] device hsr_slave_0 entered promiscuous mode [ 59.009263][ T8193] device hsr_slave_1 entered promiscuous mode [ 59.048905][ T8193] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.057801][ T8196] team0: Port device team_slave_1 added [ 59.122193][ T8196] device hsr_slave_0 entered promiscuous mode [ 59.169192][ T8196] device hsr_slave_1 entered promiscuous mode [ 59.209412][ T8196] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.237981][ T8187] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.263840][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.272147][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.280975][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.290149][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.298504][ T8189] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.305742][ T8189] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.313904][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.323183][ T8189] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.331528][ T8189] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.338542][ T8189] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.359664][ T8184] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.384228][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.405452][ T8184] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.412396][ T8198] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.422261][ T8198] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.430277][ T8198] device bridge_slave_0 entered promiscuous mode [ 59.437700][ T8198] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.444830][ T8198] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.452583][ T8198] device bridge_slave_1 entered promiscuous mode [ 59.470810][ T8193] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 59.520724][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.528463][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.558344][ T8196] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 59.600502][ T8193] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 59.650672][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.659676][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.668078][ T3192] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.675210][ T3192] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.683474][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.692330][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.700750][ T3192] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.707778][ T3192] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.715344][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.723803][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.732393][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.740814][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.749205][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.757515][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.765826][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.774645][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.783674][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.795578][ T8198] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.805264][ T8196] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 59.850213][ T8193] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 59.905853][ T8184] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 59.916536][ T8184] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 59.941670][ T8198] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.951268][ T8196] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 59.991252][ T8205] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.000221][ T8205] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.008912][ T8205] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.017083][ T8205] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.025353][ T8205] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.033909][ T8205] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.042521][ T8205] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.051314][ T8205] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.060281][ T8205] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.068567][ T8205] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.076238][ T8205] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.083967][ T8193] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 60.164732][ T8196] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 60.253313][ T8204] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.260965][ T8204] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.268352][ T8204] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.277528][ T8204] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.294579][ T8198] team0: Port device team_slave_0 added [ 60.304856][ T8198] team0: Port device team_slave_1 added [ 60.313231][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.321536][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.332692][ T8184] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.341335][ T8187] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.363696][ T8191] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.422302][ T8198] device hsr_slave_0 entered promiscuous mode [ 60.459412][ T8198] device hsr_slave_1 entered promiscuous mode [ 60.498954][ T8198] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.520749][ T8191] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.543840][ T8204] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.562263][ T8204] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.570526][ T8204] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.577996][ T8204] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.589580][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.598043][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.611031][ T3192] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.618194][ T3192] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.628553][ T8187] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.658822][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.667094][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.680713][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.701219][ T3192] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.708293][ T3192] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.747019][ T8196] 8021q: adding VLAN 0 to HW filter on device bond0 [ 165.698683][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 165.705447][ C0] rcu: 0-...!: (10499 ticks this GP) idle=aea/1/0x4000000000000002 softirq=11426/11428 fqs=2 [ 165.715920][ C0] (t=10501 jiffies g=6177 q=85) [ 165.720843][ C0] rcu: rcu_preempt kthread starved for 10498 jiffies! g6177 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 165.731924][ C0] rcu: RCU grace-period kthread stack dump: [ 165.737804][ C0] rcu_preempt R running task 29104 10 2 0x80004000 [ 165.745687][ C0] Call Trace: [ 165.748979][ C0] __schedule+0x9a0/0xcc0 [ 165.753307][ C0] schedule+0x181/0x210 [ 165.757450][ C0] schedule_timeout+0x14f/0x240 [ 165.762286][ C0] ? run_local_timers+0x120/0x120 [ 165.767299][ C0] rcu_gp_kthread+0xed8/0x1770 [ 165.772070][ C0] kthread+0x332/0x350 [ 165.776121][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 165.781218][ C0] ? kthread_blkcg+0xe0/0xe0 [ 165.785805][ C0] ret_from_fork+0x24/0x30 [ 165.790221][ C0] NMI backtrace for cpu 0 [ 165.794536][ C0] CPU: 0 PID: 8206 Comm: blkid Not tainted 5.4.0-syzkaller #0 [ 165.801968][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 165.812011][ C0] Call Trace: [ 165.815293][ C0] [ 165.818158][ C0] dump_stack+0x1fb/0x318 [ 165.822492][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 165.827335][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 165.833499][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 165.839550][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 165.845528][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 165.851424][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 165.856526][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 165.861711][ C0] ? trace_hardirqs_off+0x74/0x80 [ 165.866724][ C0] update_process_times+0x12d/0x180 [ 165.871908][ C0] tick_sched_timer+0x263/0x420 [ 165.876745][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 165.882276][ C0] __hrtimer_run_queues+0x403/0x840 [ 165.887472][ C0] hrtimer_interrupt+0x38c/0xda0 [ 165.892411][ C0] ? debug_smp_processor_id+0x9/0x20 [ 165.897698][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 165.903252][ C0] apic_timer_interrupt+0xf/0x20 [ 165.908370][ C0] [ 165.911297][ C0] RIP: 0010:mod_memcg_page_state+0x16/0x190 [ 165.917264][ C0] Code: 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 54 53 41 89 f6 48 89 fb e8 da 28 2e 00 <48> 83 c3 38 48 89 d8 48 c1 e8 03 49 bc 00 00 00 00 00 fc ff df 42 [ 165.936850][ C0] RSP: 0018:ffffc900022277d8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 165.945273][ C0] RAX: ffffffff81487326 RBX: ffffea0001b08e40 RCX: ffff88809a652600 [ 165.953256][ C0] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0001b08e40 [ 165.961401][ C0] RBP: ffffc900022277f8 R08: dffffc0000000000 R09: fffffbfff1287025 [ 165.969494][ C0] R10: fffffbfff1287025 R11: 0000000000000000 R12: ffff88806c15d3a0 [ 165.977695][ C0] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff88806c2754e8 [ 165.985690][ C0] ? mod_memcg_page_state+0x16/0x190 [ 165.990989][ C0] ? mod_memcg_page_state+0x16/0x190 [ 165.996296][ C0] free_thread_stack+0x168/0x590 [ 166.001231][ C0] put_task_stack+0xa3/0x130 [ 166.005839][ C0] finish_task_switch+0x3f1/0x550 [ 166.010880][ C0] __schedule+0x9a8/0xcc0 [ 166.015390][ C0] preempt_schedule_irq+0xc1/0x140 [ 166.020596][ C0] retint_kernel+0x1b/0x2b [ 166.025004][ C0] RIP: 0010:lock_release+0x6a/0x780 [ 166.030206][ C0] Code: 89 f3 48 c1 eb 03 8a 04 13 84 c0 0f 85 9d 04 00 00 41 83 3e 00 0f 85 71 04 00 00 48 c7 c0 20 96 0a 89 48 c1 e8 03 80 3c 10 00 <74> 16 48 c7 c7 20 96 0a 89 e8 d8 5f 56 00 48 ba 00 00 00 00 00 fc [ 166.049803][ C0] RSP: 0018:ffffc90002227a50 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 166.058222][ C0] RAX: 1ffffffff12152c4 RBX: 1ffff110134ca5d2 RCX: ffff88809a652600 [ 166.066225][ C0] RDX: dffffc0000000000 RSI: ffffffff81a505d4 RDI: ffff8880966e77f0 [ 166.074203][ C0] RBP: ffffc90002227ad0 R08: ffffffff81a12273 R09: ffffed1012cdcef3 [ 166.082209][ C0] R10: ffffed1012cdcef3 R11: 0000000000000000 R12: ffff88809a652600 [ 166.090185][ C0] R13: ffffffff81a505d4 R14: ffff88809a652e94 R15: ffff8880966e77f0 [ 166.098184][ C0] ? validate_mm+0x154/0x9b0 [ 166.102782][ C0] ? anon_vma_interval_tree_verify+0x123/0x150 [ 166.109083][ C0] ? validate_mm+0x154/0x9b0 [ 166.113691][ C0] ? __kasan_check_write+0x14/0x20 [ 166.118797][ C0] ? __down_read+0x14b/0x360 [ 166.123385][ C0] up_read+0x15/0x20 [ 166.127289][ C0] validate_mm+0x154/0x9b0 [ 166.131725][ C0] ? __kasan_check_write+0x14/0x20 [ 166.136843][ C0] ? up_write+0xee/0x450 [ 166.141095][ C0] __vma_adjust+0x2280/0x2390 [ 166.145772][ C0] ? __vma_adjust+0xc11/0x2390 [ 166.150565][ C0] __split_vma+0x356/0x490 [ 166.155001][ C0] split_vma+0x7a/0xd0 [ 166.159063][ C0] mprotect_fixup+0x6ef/0x790 [ 166.163756][ C0] ? security_file_mprotect+0xa8/0xd0 [ 166.169127][ C0] do_mprotect_pkey+0x6c2/0x8d0 [ 166.173999][ C0] __x64_sys_mprotect+0x80/0x90 [ 166.178852][ C0] do_syscall_64+0xf7/0x1c0 [ 166.183369][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 166.189391][ C0] RIP: 0033:0x7f553ee57447 [ 166.193799][ C0] Code: 73 01 c3 48 8d 0d 5d ad 20 00 31 d2 48 29 c2 89 11 48 83 c8 ff eb eb 90 90 90 90 90 90 90 90 90 90 90 90 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d 2d ad 20 00 31 d2 48 29 c2 89 [ 166.213585][ C0] RSP: 002b:00007ffc10fef388 EFLAGS: 00000206 ORIG_RAX: 000000000000000a [ 166.222029][ C0] RAX: ffffffffffffffda RBX: 00007f553f05f9a8 RCX: 00007f553ee57447 [ 166.230002][ C0] RDX: 0000000000000000 RSI: 00000000001ff000 RDI: 00007f553ea11000 [ 166.237969][ C0] RBP: 00007ffc10fef6e0 R08: 0000000000000003 R09: 0000000000000000 [ 166.245928][ C0] R10: 0000000000000001 R11: 0000000000000206 R12: 00007ffc10fef7c8 [ 166.253884][ C0] R13: 0000000000000002 R14: 0000000000000030 R15: 00007ffc10fef3d0