[ 46.298647][ T23] audit: type=1800 audit(1578478988.674:26): pid=8206 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 46.339537][ T23] audit: type=1800 audit(1578478988.674:27): pid=8206 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 46.365007][ T23] audit: type=1800 audit(1578478988.674:28): pid=8206 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. [ 47.082390][ T23] audit: type=1800 audit(1578478989.484:29): pid=8206 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 '10.128.0.146' (ECDSA) to the list of known hosts. 2020/01/08 10:23:21 fuzzer started 2020/01/08 10:23:22 dialing manager at 10.128.0.26:35703 2020/01/08 10:23:22 syscalls: 2824 2020/01/08 10:23:22 code coverage: enabled 2020/01/08 10:23:22 comparison tracing: enabled 2020/01/08 10:23:22 extra coverage: enabled 2020/01/08 10:23:22 setuid sandbox: enabled 2020/01/08 10:23:22 namespace sandbox: enabled 2020/01/08 10:23:22 Android sandbox: /sys/fs/selinux/policy does not exist 2020/01/08 10:23:22 fault injection: enabled 2020/01/08 10:23:22 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/01/08 10:23:22 net packet injection: enabled 2020/01/08 10:23:22 net device setup: enabled 2020/01/08 10:23:22 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2020/01/08 10:23:22 devlink PCI setup: PCI device 0000:00:10.0 is not available 10:23:23 executing program 0: r0 = syz_open_dev$video(&(0x7f0000000280)='/dev/video#\x00', 0x9, 0x0) ioctl$VIDIOC_ENUMAUDIO(r0, 0xc0345641, &(0x7f0000000000)={0x1f, "4ba4b98220032c564acf95bb13168f7589aca4592fca7e17be5c485d8a6a47aa"}) 10:23:23 executing program 1: r0 = syz_open_dev$cec(&(0x7f0000000040)='/dev/cec#\x00', 0x1, 0x2) ioctl$IOC_PR_PREEMPT(r0, 0x40046109, &(0x7f0000000000)={0x32}) ioctl$IOC_PR_PREEMPT(r0, 0x40046109, &(0x7f0000000080)) syzkaller login: [ 61.196742][ T8373] IPVS: ftp: loaded support on port[0] = 21 [ 61.352454][ T8373] chnl_net:caif_netlink_parms(): no params data found [ 61.422690][ T8376] IPVS: ftp: loaded support on port[0] = 21 [ 61.436332][ T8373] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.458818][ T8373] bridge0: port 1(bridge_slave_0) entered disabled state 10:23:23 executing program 2: vmsplice(0xffffffffffffffff, &(0x7f00000013c0)=[{&(0x7f0000000140)="71ce0803b7ba92869e39439d010d56dbf36e29ec59796c2200c27bf8f40730d9a2ac458678838a6fb242b22413227e8a2165506bf8f6da8532f2aa8d5dbfc846493760cc0f0c6e506fa54a47646e5a2f83bfc824e38558193e3fc8bb96822f9e9820795a225e4a654c61e6859d4dad2c5fa08ab9e31df48a49bd119d1bf6cfe5c05c63c3eee4d56903f2ca0ee5b95b48a467203e4f9079bd524175adc0cd32f50d143c19ec5a50060c8988d0de68f45f2fec6a99bf247d02af7c35e69ff21de7c526", 0xc2}], 0x1, 0x0) mkdir(&(0x7f0000000040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f00000003c0)=ANY=[@ANYBLOB="1500000065ffff0180000008003950323030302e4cc74502f987c2cec6504df6ead74ed8a60ab563b79ad635e98b4b2a3d27a7082dbb78abd55fba3da80b856445ab100621d6234555c08dc540473786cd89e9b08e3f5972fe9ca162b123e19268c89c9dd81c796f27f537cc5a3fb51e4aff8eaff4f6b59c41705b96a6711d4679079d00000000000000"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_NOTIFY_RETRIEVE(r2, &(0x7f00000000c0)={0x14c}, 0x137) mount$9p_fd(0x0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000140)='9p\x00', 0x0, &(0x7f00000001c0)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1, @ANYBLOB=',aname=']) r3 = open(&(0x7f0000000080)='./file0\x00', 0x0, 0x0) write$P9_RWSTAT(r2, &(0x7f0000000540)={0x7}, 0x7) getdents(r3, 0x0, 0x0) [ 61.469945][ T8373] device bridge_slave_0 entered promiscuous mode [ 61.494005][ T8373] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.502263][ T8373] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.510484][ T8373] device bridge_slave_1 entered promiscuous mode [ 61.561965][ T8373] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.583450][ T8373] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.662563][ T8373] team0: Port device team_slave_0 added [ 61.671293][ T8376] chnl_net:caif_netlink_parms(): no params data found [ 61.682524][ T8373] team0: Port device team_slave_1 added 10:23:24 executing program 3: r0 = openat$rtc(0xffffffffffffff9c, &(0x7f0000000040)='/dev/rtc0\x00', 0x0, 0x0) ioctl$RTC_UIE_ON(r0, 0x7002) [ 61.753017][ T8373] device hsr_slave_0 entered promiscuous mode [ 61.798898][ T8373] device hsr_slave_1 entered promiscuous mode [ 61.876514][ T8379] IPVS: ftp: loaded support on port[0] = 21 [ 61.900444][ T8376] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.907576][ T8376] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.916500][ T8376] device bridge_slave_0 entered promiscuous mode [ 61.926789][ T8376] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.934507][ T8376] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.942697][ T8376] device bridge_slave_1 entered promiscuous mode [ 62.005042][ T8376] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.036577][ T8381] IPVS: ftp: loaded support on port[0] = 21 10:23:24 executing program 4: bpf$PROG_LOAD(0x5, &(0x7f0000000040)={0x3, 0x4, &(0x7f0000000000)=@framed={{0x18, 0x2}, [@call={0x85, 0x0, 0x0, 0x44}]}, &(0x7f00000000c0)='GPL\x00', 0x5, 0x1000, &(0x7f000062b000)=""/4096, 0x0, 0x0, [], 0x0, 0x0, 0xffffffffffffffff, 0x8, 0x0, 0x0, 0x10, 0x0}, 0x67) [ 62.051577][ T8376] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.146873][ T8376] team0: Port device team_slave_0 added [ 62.187078][ T8376] team0: Port device team_slave_1 added [ 62.195207][ T8373] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 62.254698][ T8373] netdevsim netdevsim0 netdevsim1: renamed from eth1 10:23:24 executing program 5: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x3) r2 = dup(r1) r3 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) recvmsg(r2, &(0x7f0000000600)={0x0, 0x0, 0x0}, 0x120) [ 62.323896][ T8379] chnl_net:caif_netlink_parms(): no params data found [ 62.347628][ T8373] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 62.411098][ T8373] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 62.520371][ T8376] device hsr_slave_0 entered promiscuous mode [ 62.578916][ T8376] device hsr_slave_1 entered promiscuous mode [ 62.618697][ T8376] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 62.626430][ T8376] Cannot create hsr debugfs directory [ 62.652777][ T8386] IPVS: ftp: loaded support on port[0] = 21 [ 62.665343][ T8384] IPVS: ftp: loaded support on port[0] = 21 [ 62.724425][ T8379] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.731869][ T8379] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.739996][ T8379] device bridge_slave_0 entered promiscuous mode [ 62.775999][ T8379] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.783711][ T8379] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.791407][ T8379] device bridge_slave_1 entered promiscuous mode [ 62.844463][ T8381] chnl_net:caif_netlink_parms(): no params data found [ 62.866308][ T8379] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.891838][ T8379] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.931878][ T8373] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.944096][ T8379] team0: Port device team_slave_0 added [ 62.951575][ T8379] team0: Port device team_slave_1 added [ 62.994882][ T8373] 8021q: adding VLAN 0 to HW filter on device team0 [ 63.016138][ T8384] chnl_net:caif_netlink_parms(): no params data found [ 63.030652][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 63.039742][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 63.090855][ T8379] device hsr_slave_0 entered promiscuous mode [ 63.119002][ T8379] device hsr_slave_1 entered promiscuous mode [ 63.168866][ T8379] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 63.176435][ T8379] Cannot create hsr debugfs directory [ 63.182152][ T8381] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.189318][ T8381] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.197002][ T8381] device bridge_slave_0 entered promiscuous mode [ 63.207132][ T3720] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.215695][ T3720] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.224070][ T3720] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.231241][ T3720] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.240311][ T3720] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.249571][ T3720] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.258801][ T3720] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.265844][ T3720] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.283806][ T8376] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 63.361473][ T8376] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 63.445309][ T8376] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 63.510327][ T8381] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.517397][ T8381] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.526801][ T8381] device bridge_slave_1 entered promiscuous mode [ 63.536045][ T3717] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.574331][ T8376] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 63.632582][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.650933][ T8386] chnl_net:caif_netlink_parms(): no params data found [ 63.661296][ T8384] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.668344][ T8384] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.676523][ T8384] device bridge_slave_0 entered promiscuous mode [ 63.693172][ T8384] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.701273][ T8384] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.709762][ T8384] device bridge_slave_1 entered promiscuous mode [ 63.728219][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.752386][ T8381] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.767358][ T8381] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.795680][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 63.804906][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.814278][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 63.823360][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.831945][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 63.840419][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 63.848463][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 63.856905][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 63.875568][ T8384] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.896612][ T2675] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 63.916943][ T8386] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.925058][ T8386] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.933142][ T8386] device bridge_slave_0 entered promiscuous mode [ 63.942205][ T8384] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.960722][ T8381] team0: Port device team_slave_0 added [ 63.967249][ T8373] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 63.991001][ T8386] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.998084][ T8386] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.005919][ T8386] device bridge_slave_1 entered promiscuous mode [ 64.016076][ T8381] team0: Port device team_slave_1 added [ 64.030823][ T8384] team0: Port device team_slave_0 added [ 64.056379][ T8384] team0: Port device team_slave_1 added [ 64.082682][ T8386] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.094627][ T8386] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.112898][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.120455][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.128151][ T8379] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 64.181651][ T8379] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 64.291434][ T8381] device hsr_slave_0 entered promiscuous mode [ 64.348986][ T8381] device hsr_slave_1 entered promiscuous mode [ 64.408767][ T8381] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 64.408799][ T8381] Cannot create hsr debugfs directory [ 64.409450][ T8379] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 64.474485][ T8373] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.531223][ T8384] device hsr_slave_0 entered promiscuous mode [ 64.569022][ T8384] device hsr_slave_1 entered promiscuous mode [ 64.608972][ T8384] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 64.616552][ T8384] Cannot create hsr debugfs directory [ 64.629676][ T8379] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 64.702213][ T8386] team0: Port device team_slave_0 added [ 64.709847][ T8386] team0: Port device team_slave_1 added [ 64.791572][ T8386] device hsr_slave_0 entered promiscuous mode [ 64.829051][ T8386] device hsr_slave_1 entered promiscuous mode [ 64.878718][ T8386] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 64.886291][ T8386] Cannot create hsr debugfs directory [ 64.907444][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 64.916432][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 64.929669][ T8376] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.004636][ T8376] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.012358][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 65.021130][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.059442][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 65.067806][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 65.076841][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.085647][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.094156][ T46] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.101242][ T46] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.109650][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 65.117281][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 65.125051][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.151575][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.160874][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.169741][ T2669] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.176873][ T2669] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.184619][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.212948][ T8373] device veth0_vlan entered promiscuous mode [ 65.234641][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.243796][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.255043][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.264649][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.272835][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.281439][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.306021][ T8373] device veth1_vlan entered promiscuous mode [ 65.316050][ T8381] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 65.353140][ T8381] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 65.415042][ T8381] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 65.470932][ T8381] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 65.534585][ T8379] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.541982][ T8384] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 65.600442][ T8384] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 65.650183][ T8386] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 65.710681][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 65.721149][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.729965][ T46] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.741130][ T8376] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 65.753705][ T8376] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.779130][ T8384] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 65.810721][ T8386] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 65.850480][ T3717] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 65.861233][ T3717] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.890394][ T8384] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 65.912348][ T8386] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 65.970261][ T3717] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.977685][ T3717] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.990174][ T8379] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.013793][ T8376] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.034833][ T8386] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 171.068547][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 171.075411][ C1] rcu: 1-...!: (10499 ticks this GP) idle=ce6/1/0x4000000000000002 softirq=11402/11402 fqs=0 [ 171.085879][ C1] (t=10501 jiffies g=6545 q=110) [ 171.090893][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g6545 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 171.101973][ C1] rcu: RCU grace-period kthread stack dump: [ 171.107848][ C1] rcu_preempt R running task 28984 10 2 0x80004000 [ 171.115740][ C1] Call Trace: [ 171.119025][ C1] __schedule+0x9a0/0xcc0 [ 171.123362][ C1] schedule+0x181/0x210 [ 171.127507][ C1] schedule_timeout+0x14f/0x240 [ 171.132345][ C1] ? run_local_timers+0x120/0x120 [ 171.137360][ C1] rcu_gp_kthread+0xed8/0x1770 [ 171.142122][ C1] kthread+0x332/0x350 [ 171.146183][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 171.151283][ C1] ? kthread_blkcg+0xe0/0xe0 [ 171.155864][ C1] ret_from_fork+0x24/0x30 [ 171.160280][ C1] NMI backtrace for cpu 1 [ 171.164601][ C1] CPU: 1 PID: 8393 Comm: blkid Not tainted 5.5.0-rc5-syzkaller #0 [ 171.172389][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 171.182427][ C1] Call Trace: [ 171.185701][ C1] [ 171.188543][ C1] dump_stack+0x1fb/0x318 [ 171.192866][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 171.197703][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 171.203845][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 171.209897][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 171.215868][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 171.221776][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 171.226883][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 171.232072][ C1] ? trace_hardirqs_off+0x74/0x80 [ 171.237087][ C1] update_process_times+0x12d/0x180 [ 171.242283][ C1] tick_sched_timer+0x263/0x420 [ 171.247136][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 171.252673][ C1] __hrtimer_run_queues+0x403/0x840 [ 171.257873][ C1] hrtimer_interrupt+0x38c/0xda0 [ 171.262821][ C1] ? debug_smp_processor_id+0x9/0x20 [ 171.268100][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 171.273638][ C1] apic_timer_interrupt+0xf/0x20 [ 171.278562][ C1] [ 171.281494][ C1] RIP: 0010:__memcg_kmem_uncharge+0x1/0x1a0 [ 171.287382][ C1] Code: eb 1b 83 3d 20 bf ac 07 00 74 12 48 81 c3 08 02 00 00 48 89 df 4c 89 f6 e8 8c 85 ff ff 5b 41 5e 5d c3 0f 1f 80 00 00 00 00 55 <48> 89 e5 41 57 41 56 41 55 41 54 53 50 89 f3 49 89 fc 48 b8 00 00 [ 171.306986][ C1] RSP: 0018:ffffc900023076a8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 171.315384][ C1] RAX: ffffffff81489244 RBX: ffffea00024f23c0 RCX: ffff88808cbbe640 [ 171.323364][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00024f23c0 [ 171.331329][ C1] RBP: ffffc900023076f0 R08: dffffc0000000000 R09: fffffbfff12c962d [ 171.339289][ C1] R10: fffffbfff12c962d R11: 0000000000000000 R12: ffff8880981530a0 [ 171.347257][ C1] R13: dffffc0000000000 R14: 1ffff1101302a614 R15: ffff888091c77438 [ 171.355233][ C1] ? free_thread_stack+0x124/0x590 [ 171.360339][ C1] ? free_thread_stack+0x12e/0x590 [ 171.365443][ C1] put_task_stack+0xa3/0x130 [ 171.370025][ C1] finish_task_switch+0x3f1/0x550 [ 171.375059][ C1] __schedule+0x9a8/0xcc0 [ 171.379401][ C1] preempt_schedule_irq+0xc1/0x140 [ 171.384504][ C1] retint_kernel+0x1b/0x2b [ 171.388914][ C1] RIP: 0010:__unwind_start+0x0/0x440 [ 171.394193][ C1] Code: e1 07 80 c1 03 38 c1 0f 8c ec fd ff ff e8 c8 ea 7d 00 e9 e2 fd ff ff e8 be 90 13 00 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 50 48 89 4d c8 49 [ 171.413801][ C1] RSP: 0018:ffffc90002307908 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff02 [ 171.422219][ C1] RAX: ffff88808cbbe640 RBX: 1ffff92000460f38 RCX: ffffc900023079a0 [ 171.430186][ C1] RDX: 0000000000000000 RSI: ffff88808cbbe640 RDI: ffffc90002307910 [ 171.438152][ C1] RBP: ffffc900023079a0 R08: ffff88808cbbee98 R09: ffffed1012a6ee3a [ 171.446117][ C1] R10: fffffbfff140cf2e R11: 0000000000000000 R12: ffff88808cbbe640 [ 171.454081][ C1] R13: ffffffff8165c180 R14: ffffc900023079b0 R15: 0000000000000000 [ 171.462060][ C1] ? stack_trace_save+0x150/0x150 [ 171.467097][ C1] ? arch_stack_walk+0x78/0xe0 [ 171.471848][ C1] ? __kasan_check_read+0x11/0x20 [ 171.476869][ C1] stack_trace_save+0xb6/0x150 [ 171.481623][ C1] __kasan_kmalloc+0x11c/0x1b0 [ 171.486381][ C1] ? __lock_acquire+0xc75/0x1be0 [ 171.491319][ C1] ? __kasan_check_read+0x11/0x20 [ 171.496330][ C1] ? mark_lock+0x107/0x1650 [ 171.500820][ C1] ? check_preemption_disabled+0x44/0x260 [ 171.506526][ C1] ? rcu_lock_release+0x4/0x20 [ 171.511296][ C1] ? lockdep_hardirqs_on+0x3c5/0x7d0 [ 171.516570][ C1] ? kmem_cache_alloc+0x194/0x2e0 [ 171.521588][ C1] kasan_slab_alloc+0xf/0x20 [ 171.526172][ C1] kmem_cache_alloc+0x1f5/0x2e0 [ 171.531007][ C1] ? vm_area_dup+0x24/0xb0 [ 171.535414][ C1] vm_area_dup+0x24/0xb0 [ 171.539646][ C1] __split_vma+0xb4/0x490 [ 171.543970][ C1] split_vma+0x7a/0xd0 [ 171.548027][ C1] mprotect_fixup+0x6ef/0x790 [ 171.552703][ C1] ? security_file_mprotect+0xa8/0xd0 [ 171.558065][ C1] do_mprotect_pkey+0x6c2/0x8d0 [ 171.562914][ C1] __x64_sys_mprotect+0x80/0x90 [ 171.568101][ C1] do_syscall_64+0xf7/0x1c0 [ 171.572598][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 171.578479][ C1] RIP: 0033:0x7f90c9d7d447 [ 171.582893][ C1] 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 [ 171.602482][ C1] RSP: 002b:00007fff850ae4c8 EFLAGS: 00000206 ORIG_RAX: 000000000000000a [ 171.610881][ C1] RAX: ffffffffffffffda RBX: 00007f90c9f7f000 RCX: 00007f90c9d7d447 [ 171.618841][ C1] RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00007f90c97b1000 [ 171.626818][ C1] RBP: 00007fff850ae5c0 R08: 0000000000000001 R09: 0000000000000010 [ 171.634779][ C1] R10: 00007f90c95af5d0 R11: 0000000000000206 R12: 00007f90c95ae000 [ 171.642741][ C1] R13: 00007f90c97b2180 R14: 00007f90c95af5d0 R15: 00007f90c97b1fe0