[ 50.823201][ T28] audit: type=1800 audit(1578475429.621:26): pid=8296 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 50.878422][ T28] audit: type=1800 audit(1578475429.621:27): pid=8296 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 50.919622][ T28] audit: type=1800 audit(1578475429.621:28): pid=8296 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. [ 51.185113][ T8365] sshd (8365) used greatest stack depth: 23416 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.81' (ECDSA) to the list of known hosts. 2020/01/08 09:24:01 fuzzer started 2020/01/08 09:24:02 dialing manager at 10.128.0.26:35703 2020/01/08 09:24:02 syscalls: 2824 2020/01/08 09:24:02 code coverage: enabled 2020/01/08 09:24:02 comparison tracing: enabled 2020/01/08 09:24:02 extra coverage: enabled 2020/01/08 09:24:02 setuid sandbox: enabled 2020/01/08 09:24:02 namespace sandbox: enabled 2020/01/08 09:24:02 Android sandbox: /sys/fs/selinux/policy does not exist 2020/01/08 09:24:02 fault injection: enabled 2020/01/08 09:24:02 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/01/08 09:24:02 net packet injection: enabled 2020/01/08 09:24:02 net device setup: enabled 2020/01/08 09:24:02 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2020/01/08 09:24:02 devlink PCI setup: PCI device 0000:00:10.0 is not available 09:24:03 executing program 0: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = dup2(r0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000000)={&(0x7f0000000080)={{0xeb9f, 0x1, 0x0, 0x18, 0x0, 0xc, 0xc, 0x4, [@struct={0x1}]}, {0x0, [0x5f, 0x17]}}, &(0x7f00000000c0)=""/207, 0x28, 0xcf, 0x8}, 0x20) 09:24:03 executing program 1: r0 = io_uring_setup(0xa4, &(0x7f0000000100)) io_uring_register$IORING_REGISTER_FILES(r0, 0x2, &(0x7f0000000280)=[0xffffffffffffffff], 0x35b) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 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) openat$vsock(0xffffffffffffff9c, 0x0, 0x0, 0x0) sysfs$2(0x2, 0x8, &(0x7f00000000c0)=""/17) io_uring_register$IORING_REGISTER_FILES_UPDATE(r0, 0x6, &(0x7f0000000080)={0x0, &(0x7f0000000180)}, 0x106) syzkaller login: [ 65.163505][ T8463] IPVS: ftp: loaded support on port[0] = 21 09:24:04 executing program 2: r0 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1) ioctl$HCIINQUIRY(r0, 0x800448f0, 0x0) [ 65.331622][ T8465] IPVS: ftp: loaded support on port[0] = 21 [ 65.359274][ T8463] chnl_net:caif_netlink_parms(): no params data found [ 65.488648][ T8463] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.503475][ T8463] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.523907][ T8463] device bridge_slave_0 entered promiscuous mode [ 65.576247][ T8463] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.584591][ T8463] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.592434][ T8463] device bridge_slave_1 entered promiscuous mode [ 65.609532][ T8468] IPVS: ftp: loaded support on port[0] = 21 09:24:04 executing program 3: r0 = creat(&(0x7f0000000300)='./bus\x00', 0x0) ioctl$EXT4_IOC_SETFLAGS(r0, 0x40086602, &(0x7f00000001c0)=0x20008088) [ 65.656066][ T8465] chnl_net:caif_netlink_parms(): no params data found [ 65.675962][ T8463] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.713645][ T8463] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.786842][ T8463] team0: Port device team_slave_0 added [ 65.792885][ T8465] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.799943][ T8465] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.811142][ T8465] device bridge_slave_0 entered promiscuous mode [ 65.823619][ T8463] team0: Port device team_slave_1 added [ 65.842288][ T8465] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.851735][ T8465] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.861454][ T8465] device bridge_slave_1 entered promiscuous mode 09:24:04 executing program 4: r0 = perf_event_open(&(0x7f0000000140)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, r0, 0x2) [ 65.937443][ T8463] device hsr_slave_0 entered promiscuous mode [ 65.994640][ T8463] device hsr_slave_1 entered promiscuous mode [ 66.168316][ T8471] IPVS: ftp: loaded support on port[0] = 21 [ 66.180603][ T8465] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.242208][ T8465] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 09:24:05 executing program 5: r0 = syz_init_net_socket$x25(0x9, 0x5, 0x0) listen(r0, 0x0) setsockopt$sock_timeval(r0, 0x1, 0x14, &(0x7f0000000040)={0x0, 0x2710}, 0x10) accept(r0, 0x0, 0x0) [ 66.296889][ T8473] IPVS: ftp: loaded support on port[0] = 21 [ 66.345838][ T8468] chnl_net:caif_netlink_parms(): no params data found [ 66.370575][ T8465] team0: Port device team_slave_0 added [ 66.400603][ T8465] team0: Port device team_slave_1 added [ 66.413484][ T8463] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 66.469031][ T8463] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 66.547066][ T8463] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 66.587886][ T8463] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 66.694854][ T8465] device hsr_slave_0 entered promiscuous mode [ 66.753182][ T8465] device hsr_slave_1 entered promiscuous mode [ 66.802735][ T8465] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 66.810607][ T8465] Cannot create hsr debugfs directory [ 66.851991][ T8476] IPVS: ftp: loaded support on port[0] = 21 [ 66.900993][ T8468] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.908414][ T8468] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.916817][ T8468] device bridge_slave_0 entered promiscuous mode [ 66.927155][ T8468] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.934449][ T8468] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.942414][ T8468] device bridge_slave_1 entered promiscuous mode [ 67.005770][ T8471] chnl_net:caif_netlink_parms(): no params data found [ 67.038328][ T8468] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.098574][ T8468] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.164830][ T8468] team0: Port device team_slave_0 added [ 67.170976][ T8471] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.178185][ T8471] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.188001][ T8471] device bridge_slave_0 entered promiscuous mode [ 67.197029][ T8471] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.204247][ T8471] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.212196][ T8471] device bridge_slave_1 entered promiscuous mode [ 67.228571][ T8468] team0: Port device team_slave_1 added [ 67.249658][ T8471] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.269032][ T8463] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.284622][ T8471] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.299912][ T8473] chnl_net:caif_netlink_parms(): no params data found [ 67.386595][ T8468] device hsr_slave_0 entered promiscuous mode [ 67.432952][ T8468] device hsr_slave_1 entered promiscuous mode [ 67.502957][ T8468] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 67.510572][ T8468] Cannot create hsr debugfs directory [ 67.520097][ T8471] team0: Port device team_slave_0 added [ 67.530566][ T8471] team0: Port device team_slave_1 added [ 67.544891][ T8463] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.559390][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.568771][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.584619][ T8465] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 67.639865][ T8465] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 67.699430][ T8465] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 67.768469][ T8465] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 67.836783][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 67.845867][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.854795][ T3143] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.862167][ T3143] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.965391][ T8471] device hsr_slave_0 entered promiscuous mode [ 68.013214][ T8471] device hsr_slave_1 entered promiscuous mode [ 68.052740][ T8471] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 68.060355][ T8471] Cannot create hsr debugfs directory [ 68.074400][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 68.083642][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 68.092074][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 68.100794][ T3143] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.107940][ T3143] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.132348][ T8473] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.140983][ T8473] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.149159][ T8473] device bridge_slave_0 entered promiscuous mode [ 68.160937][ T8473] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.168735][ T8473] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.176605][ T8473] device bridge_slave_1 entered promiscuous mode [ 68.191277][ T8476] chnl_net:caif_netlink_parms(): no params data found [ 68.205958][ T2672] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 68.214547][ T2672] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 68.280097][ T8473] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.299041][ T8476] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.306733][ T8476] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.315474][ T8476] device bridge_slave_0 entered promiscuous mode [ 68.328532][ T8476] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.336783][ T8476] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.345340][ T8476] device bridge_slave_1 entered promiscuous mode [ 68.366484][ T8473] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.388309][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 68.398208][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 68.407283][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 68.429410][ T8476] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.443389][ T8473] team0: Port device team_slave_0 added [ 68.451421][ T8473] team0: Port device team_slave_1 added [ 68.475528][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 68.484803][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 68.493403][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 68.501576][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 68.511671][ T8476] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.536602][ T8468] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 68.602130][ T8463] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 68.614271][ T8463] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 68.675616][ T8473] device hsr_slave_0 entered promiscuous mode [ 68.713066][ T8473] device hsr_slave_1 entered promiscuous mode [ 68.752623][ T8473] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 68.760301][ T8473] Cannot create hsr debugfs directory [ 68.768069][ T8476] team0: Port device team_slave_0 added [ 68.778583][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 68.787137][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 68.798950][ T8468] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 68.848183][ T8468] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 68.904440][ T8468] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 68.945250][ T8476] team0: Port device team_slave_1 added [ 68.972746][ T8471] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 69.054516][ T8476] device hsr_slave_0 entered promiscuous mode [ 69.112902][ T8476] device hsr_slave_1 entered promiscuous mode [ 69.162767][ T8476] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 69.170424][ T8476] Cannot create hsr debugfs directory [ 69.189863][ T8471] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 69.269393][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 69.277064][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 69.287140][ T8471] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 69.330190][ T8463] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 69.347557][ T8471] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 69.427575][ T8465] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.473391][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 69.481039][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.489309][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 69.498242][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 69.544523][ T8465] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.560496][ T8473] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 69.625473][ T8473] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 69.665448][ T8473] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 69.739526][ T8473] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 69.784073][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 69.793782][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.802800][ T3141] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.809839][ T3141] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.817442][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 69.826399][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 69.835424][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 69.843387][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 69.850974][ T3141] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 69.865001][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 69.874650][ T3143] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.883353][ T3143] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.890583][ T3143] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.900863][ T8463] device veth0_vlan entered promiscuous mode [ 69.948136][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 69.958898][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 69.969359][ T8476] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 70.027721][ T8463] device veth1_vlan entered promiscuous mode [ 70.043265][ T8476] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 70.110367][ T8468] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.121467][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 70.130461][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 70.139937][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 70.163515][ T8476] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 70.215273][ T8476] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 70.244968][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 70.255159][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 70.265198][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 70.274844][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 70.284854][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 70.292557][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 70.300212][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 70.308786][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 70.337366][ T8468] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.358692][ T8465] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 70.385357][ T8471] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.418443][ T8483] BPF:[1] STRUCT _ [ 70.422403][ T8483] BPF:size=0 vlen=0 [ 70.440860][ T8483] BPF: [ 70.449548][ T8483] BPF:Invalid name [ 70.459780][ T8483] BPF: [ 70.459780][ T8483] [ 70.475118][ T8476] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.493951][ T8476] 8021q: adding VLAN 0 to HW filter on device team0 [ 70.531934][ T8476] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 70.542645][ T8476] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 70.574870][ T8476] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 175.372477][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 175.379635][ C1] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P892 [ 175.387014][ C1] (detected by 1, t=10503 jiffies, g=6945, q=744) [ 175.393504][ C1] kworker/u4:7 R running task 25808 892 2 0x80004008 [ 175.401415][ C1] Workqueue: bat_events batadv_nc_worker [ 175.407027][ C1] Call Trace: [ 175.410300][ C1] [ 175.413147][ C1] sched_show_task+0x40f/0x560 [ 175.418148][ C1] rcu_sched_clock_irq+0x16b1/0x1ad0 [ 175.423455][ C1] update_process_times+0x12d/0x180 [ 175.428696][ C1] tick_sched_timer+0x263/0x420 [ 175.433539][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 175.439249][ C1] __hrtimer_run_queues+0x403/0x840 [ 175.444456][ C1] hrtimer_interrupt+0x38c/0xda0 [ 175.449406][ C1] ? debug_smp_processor_id+0x9/0x20 [ 175.454694][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 175.460235][ C1] apic_timer_interrupt+0xf/0x20 [ 175.465173][ C1] [ 175.468122][ C1] RIP: 0010:free_thread_stack+0x13d/0x590 [ 175.473840][ C1] Code: 00 00 e8 86 91 61 00 e9 5d 04 00 00 e8 3c 2c 2e 00 48 89 df 31 f6 e8 02 8d 6f 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 73 94 6a 00 <49> 8b 1c 24 48 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 [ 175.493436][ C1] RSP: 0018:ffffc900041579a8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 175.501837][ C1] RAX: 0000000000000001 RBX: ffffea00027e7b40 RCX: 0000000000000000 [ 175.509795][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00027e7b40 [ 175.517757][ C1] RBP: ffffc900041579e0 R08: 000000000003a728 R09: ffffed1011fb9ad9 [ 175.525714][ C1] R10: ffffed1011fb9ad9 R11: 0000000000000000 R12: ffff888097a0c820 [ 175.533673][ C1] R13: dffffc0000000000 R14: 1ffff11012f41904 R15: ffff88808fdcd6b8 [ 175.541667][ C1] ? free_thread_stack+0x12e/0x590 [ 175.546775][ C1] put_task_stack+0xa3/0x130 [ 175.551355][ C1] finish_task_switch+0x3f1/0x550 [ 175.556371][ C1] __schedule+0x9a8/0xcc0 [ 175.560699][ C1] preempt_schedule_irq+0xc1/0x140 [ 175.565800][ C1] retint_kernel+0x1b/0x2b [ 175.570235][ C1] RIP: 0010:lock_acquire+0x1b2/0x250 [ 175.575515][ C1] Code: c1 e8 03 42 80 3c 30 00 74 0c 48 c7 c7 68 95 2a 89 e8 02 7a 57 00 48 83 3d 92 e8 ce 07 00 0f 84 9c 00 00 00 48 8b 7d c0 57 9d <0f> 1f 44 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 44 89 [ 175.595131][ C1] RSP: 0018:ffffc90004157bf8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02 [ 175.603544][ C1] RAX: 1ffffffff12552ad RBX: 0000000000000000 RCX: 68c00f9e9d5009ec [ 175.611602][ C1] RDX: dffffc0000000000 RSI: ffff8880a7bc8ca8 RDI: 0000000000000286 [ 175.619561][ C1] RBP: ffffc90004157c50 R08: dffffc0000000000 R09: fffffbfff140cf1d [ 175.627521][ C1] R10: fffffbfff140cf1d R11: 0000000000000000 R12: 0000000000000000 [ 175.635484][ C1] R13: 0000000000000000 R14: dffffc0000000000 R15: ffffffff892d4bc0 [ 175.643487][ C1] rcu_lock_acquire+0x2e/0x40 [ 175.648161][ C1] ? rcu_lock_acquire+0x9/0x40 [ 175.652929][ C1] batadv_nc_worker+0xdc/0x600 [ 175.657711][ C1] process_one_work+0x7ef/0x10d0 [ 175.662676][ C1] worker_thread+0xc01/0x1630 [ 175.667388][ C1] kthread+0x332/0x350 [ 175.671456][ C1] ? rcu_lock_release+0x30/0x30 [ 175.677335][ C1] ? kthread_blkcg+0xe0/0xe0 [ 175.681921][ C1] ret_from_fork+0x24/0x30 [ 175.686357][ C1] rcu: rcu_preempt kthread starved for 10510 jiffies! g6945 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 175.697447][ C1] rcu: RCU grace-period kthread stack dump: [ 175.703327][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 175.711215][ C1] Call Trace: [ 175.714495][ C1] __schedule+0x9a0/0xcc0 [ 175.718821][ C1] schedule+0x181/0x210 [ 175.722967][ C1] schedule_timeout+0x14f/0x240 [ 175.727803][ C1] ? run_local_timers+0x120/0x120 [ 175.732819][ C1] rcu_gp_kthread+0xed8/0x1770 [ 175.737585][ C1] kthread+0x332/0x350 [ 175.741639][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 175.746742][ C1] ? kthread_blkcg+0xe0/0xe0 [ 175.751320][ C1] ret_from_fork+0x24/0x30