[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 47.986551][ T25] audit: type=1800 audit(1575417479.698:25): pid=8304 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 48.019617][ T25] audit: type=1800 audit(1575417479.708:26): pid=8304 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 48.068644][ T25] audit: type=1800 audit(1575417479.708:27): pid=8304 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.223' (ECDSA) to the list of known hosts. 2019/12/03 23:58:11 fuzzer started 2019/12/03 23:58:12 dialing manager at 10.128.0.26:42111 2019/12/03 23:58:12 syscalls: 2689 2019/12/03 23:58:12 code coverage: enabled 2019/12/03 23:58:12 comparison tracing: enabled 2019/12/03 23:58:12 extra coverage: extra coverage is not supported by the kernel 2019/12/03 23:58:12 setuid sandbox: enabled 2019/12/03 23:58:12 namespace sandbox: enabled 2019/12/03 23:58:12 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 23:58:12 fault injection: enabled 2019/12/03 23:58:12 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 23:58:12 net packet injection: enabled 2019/12/03 23:58:12 net device setup: enabled 2019/12/03 23:58:12 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 23:58:12 devlink PCI setup: PCI device 0000:00:10.0 is not available 23:58:13 executing program 0: socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000180)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) setsockopt$SO_ATTACH_FILTER(0xffffffffffffffff, 0x1, 0x1a, &(0x7f0000000040)={0x20000115}, 0x10) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000100)={0xffffffffffffffff}) io_setup(0x5, &(0x7f0000000500)=0x0) io_submit(r3, 0x1e09328e, &(0x7f0000000040)=[&(0x7f0000000000)={0x0, 0x0, 0x0, 0x1000800000000001, 0x0, r2, 0x0, 0x12f}]) 23:58:13 executing program 1: r0 = socket$inet_udplite(0x2, 0x2, 0x88) ioctl(r0, 0x1000008912, &(0x7f0000000140)="0800b5055e0bcfe87b0071") unshare(0x2000400) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000140)={0xffffffffffffffff}) r2 = dup(r1) inotify_add_watch(r2, 0x0, 0x1000000) syzkaller login: [ 61.861175][ T8469] IPVS: ftp: loaded support on port[0] = 21 23:58:13 executing program 2: mkdir(&(0x7f0000000000)='./file0\x00', 0x0) mount(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f00000000c0)='ramfs\x00', 0x0, 0x0) r0 = creat(&(0x7f0000000040)='./file0/bus\x00', 0x0) fcntl$lock(r0, 0x7, &(0x7f0000027000)={0x1}) r1 = open(&(0x7f0000021000)='./file0\x00', 0x0, 0x0) fchdir(r1) link(&(0x7f0000000200)='./bus\x00', &(0x7f0000000240)='./file0\x00') [ 62.064247][ T8469] chnl_net:caif_netlink_parms(): no params data found [ 62.082030][ T8472] IPVS: ftp: loaded support on port[0] = 21 [ 62.184724][ T8469] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.193529][ T8469] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.202964][ T8469] device bridge_slave_0 entered promiscuous mode [ 62.222238][ T8469] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.232683][ T8469] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.243192][ T8469] device bridge_slave_1 entered promiscuous mode 23:58:14 executing program 3: syz_mount_image$gfs2(&(0x7f0000000100)='gfs2\x00', &(0x7f0000000000)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f0000000280)={[{@noquota='noOuota'}]}) [ 62.320434][ T8469] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.346748][ T8476] IPVS: ftp: loaded support on port[0] = 21 [ 62.378275][ T8469] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.394932][ T8472] chnl_net:caif_netlink_parms(): no params data found [ 62.455735][ T8469] team0: Port device team_slave_0 added [ 62.473408][ T8469] team0: Port device team_slave_1 added [ 62.508166][ T8478] IPVS: ftp: loaded support on port[0] = 21 [ 62.528629][ T8472] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.539685][ T8472] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.547732][ T8472] device bridge_slave_0 entered promiscuous mode [ 62.559622][ T8472] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.567048][ T8472] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.577206][ T8472] device bridge_slave_1 entered promiscuous mode 23:58:14 executing program 4: r0 = socket$inet_udplite(0x2, 0x2, 0x88) sendmsg$inet(r0, &(0x7f0000000280)={&(0x7f0000000240)={0x2, 0x4e20, @local}, 0x10, 0x0, 0x0, &(0x7f0000000340)=[@ip_retopts={{0x28, 0x0, 0x7, {[@ra={0x94, 0x6}, @rr={0x7, 0xf, 0xb, [@multicast1, @remote, @empty]}]}}}], 0x28}, 0x0) [ 62.654104][ T8469] device hsr_slave_0 entered promiscuous mode [ 62.719567][ T8469] device hsr_slave_1 entered promiscuous mode [ 62.828070][ T8472] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.855026][ T8472] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.884401][ T8480] IPVS: ftp: loaded support on port[0] = 21 23:58:14 executing program 5: perf_event_open(&(0x7f0000000040)={0x1, 0x70, 0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = syz_open_dev$media(&(0x7f0000000280)='/dev/media#\x00', 0x0, 0x0) ioctl$RTC_EPOCH_READ(r0, 0xc0287c02, &(0x7f0000000040)) [ 62.938217][ T8472] team0: Port device team_slave_0 added [ 62.951186][ T8472] team0: Port device team_slave_1 added [ 63.016527][ T8469] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 63.098229][ T8469] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 63.172195][ T8469] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 63.243454][ T8469] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 63.361478][ T8472] device hsr_slave_0 entered promiscuous mode [ 63.399574][ T8472] device hsr_slave_1 entered promiscuous mode [ 63.449330][ T8472] debugfs: Directory 'hsr0' with parent '/' already present! [ 63.464396][ T8478] chnl_net:caif_netlink_parms(): no params data found [ 63.477717][ T8476] chnl_net:caif_netlink_parms(): no params data found [ 63.503617][ T8484] IPVS: ftp: loaded support on port[0] = 21 [ 63.546708][ T8476] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.554363][ T8476] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.562350][ T8476] device bridge_slave_0 entered promiscuous mode [ 63.571165][ T8476] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.578917][ T8476] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.587430][ T8476] device bridge_slave_1 entered promiscuous mode [ 63.627785][ T8476] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.637688][ T8478] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.646998][ T8478] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.655329][ T8478] device bridge_slave_0 entered promiscuous mode [ 63.694453][ T8476] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.707596][ T8478] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.714979][ T8478] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.723442][ T8478] device bridge_slave_1 entered promiscuous mode [ 63.770199][ T8476] team0: Port device team_slave_0 added [ 63.776291][ T8472] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 63.823686][ T8472] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 63.891938][ T8476] team0: Port device team_slave_1 added [ 63.900079][ T8478] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.912016][ T8472] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 63.964057][ T8472] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 64.044144][ T8480] chnl_net:caif_netlink_parms(): no params data found [ 64.054180][ T8478] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.142077][ T8476] device hsr_slave_0 entered promiscuous mode [ 64.179580][ T8476] device hsr_slave_1 entered promiscuous mode [ 64.239313][ T8476] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.273909][ T8480] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.281519][ T8480] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.289397][ T8480] device bridge_slave_0 entered promiscuous mode [ 64.320740][ T8478] team0: Port device team_slave_0 added [ 64.326954][ T8480] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.334474][ T8480] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.342669][ T8480] device bridge_slave_1 entered promiscuous mode [ 64.383551][ T8478] team0: Port device team_slave_1 added [ 64.422018][ T8476] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 64.465498][ T8476] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 64.522648][ T8480] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.538125][ T8480] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.553400][ T8476] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 64.671919][ T8478] device hsr_slave_0 entered promiscuous mode [ 64.719493][ T8478] device hsr_slave_1 entered promiscuous mode [ 64.789503][ T8478] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.797167][ T8484] chnl_net:caif_netlink_parms(): no params data found [ 64.805879][ T8476] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 64.863131][ T8480] team0: Port device team_slave_0 added [ 64.883910][ T8480] team0: Port device team_slave_1 added [ 64.905023][ T8472] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.943879][ T8472] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.955994][ T8474] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.965662][ T8474] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.986234][ T8484] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.993689][ T8484] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.002232][ T8484] device bridge_slave_0 entered promiscuous mode [ 65.018185][ T8469] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.101934][ T8480] device hsr_slave_0 entered promiscuous mode [ 65.139509][ T8480] device hsr_slave_1 entered promiscuous mode [ 65.189373][ T8480] debugfs: Directory 'hsr0' with parent '/' already present! [ 65.214117][ T8484] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.223643][ T8484] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.231513][ T8484] device bridge_slave_1 entered promiscuous mode [ 65.242666][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.251955][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.263188][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.270514][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.278509][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.289054][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.298126][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.305558][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.313915][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.330675][ T8469] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.360011][ T8480] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 65.395823][ T8487] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.406885][ T8487] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 65.414859][ T8487] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.423125][ T8487] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.433466][ T8478] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 65.485328][ T8478] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 65.531116][ T8478] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 65.571642][ T8478] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 65.611014][ T8480] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 65.686028][ T8480] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 65.741660][ T8480] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 65.783145][ T8485] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.792660][ T8485] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.802086][ T8485] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.809574][ T8485] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.817453][ T8485] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.826326][ T8485] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.834852][ T8485] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.842256][ T8485] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.850049][ T8485] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.858487][ T8485] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.867485][ T8485] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.876117][ T8485] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.890079][ T8484] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.905157][ T8484] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.935362][ T8472] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 65.946098][ T8472] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 65.985361][ T8476] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.997718][ T8474] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 66.010072][ T8474] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.018552][ T8474] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 66.027389][ T8474] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.036354][ T8474] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 66.045090][ T8474] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.053773][ T8474] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 66.076146][ T8484] team0: Port device team_slave_0 added [ 66.084880][ T8484] team0: Port device team_slave_1 added [ 66.107636][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.123290][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 66.132153][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.140866][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.148777][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 66.157819][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.167476][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.224099][ T8484] device hsr_slave_0 entered promiscuous mode [ 66.269683][ T8484] device hsr_slave_1 entered promiscuous mode [ 66.320234][ T8484] debugfs: Directory 'hsr0' with parent '/' already present! [ 66.341363][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.348916][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.357214][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 66.366593][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.376565][ T8476] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.392127][ T8472] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.420745][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 66.430546][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.439000][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.446319][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.454451][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 66.463197][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.472723][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 66.481466][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.508137][ T8469] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.522503][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 66.538881][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 66.547999][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.556831][ T43] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.564103][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.572965][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 66.582986][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 66.591751][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 66.600642][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.610202][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.623961][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 66.633654][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.645933][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 66.655251][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.687669][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 66.704465][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.724455][ T8478] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.755165][ T8478] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.807995][ T8478] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 66.824450][ T8478] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.873012][ T8478] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 171.889106][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 171.895890][ C0] rcu: 0-...!: (1 GPs behind) idle=e22/1/0x4000000000000002 softirq=11388/11393 fqs=31 [ 171.906220][ C0] (t=10501 jiffies g=7069 q=375) [ 171.911243][ C0] rcu: rcu_preempt kthread starved for 10440 jiffies! g7069 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 171.923258][ C0] rcu: RCU grace-period kthread stack dump: [ 171.929165][ C0] rcu_preempt R running task 29032 10 2 0x80004000 [ 171.937099][ C0] Call Trace: [ 171.940407][ C0] __schedule+0x9a0/0xcc0 [ 171.944786][ C0] schedule+0x181/0x210 [ 171.948940][ C0] schedule_timeout+0x14f/0x240 [ 171.953810][ C0] ? run_local_timers+0x120/0x120 [ 171.958864][ C0] rcu_gp_kthread+0xed8/0x1770 [ 171.963802][ C0] kthread+0x332/0x350 [ 171.967870][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 171.972968][ C0] ? kthread_blkcg+0xe0/0xe0 [ 171.977575][ C0] ret_from_fork+0x24/0x30 [ 171.982179][ C0] NMI backtrace for cpu 0 [ 171.986515][ C0] CPU: 0 PID: 8484 Comm: syz-executor.5 Not tainted 5.4.0-syzkaller #0 [ 171.994769][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 172.004844][ C0] Call Trace: [ 172.008137][ C0] [ 172.010988][ C0] dump_stack+0x1fb/0x318 [ 172.015324][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 172.020296][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 172.026579][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 172.032643][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 172.038644][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 172.044570][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 172.049881][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 172.055107][ C0] ? trace_hardirqs_off+0x74/0x80 [ 172.060140][ C0] update_process_times+0x12d/0x180 [ 172.065333][ C0] tick_sched_timer+0x263/0x420 [ 172.070168][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 172.075736][ C0] __hrtimer_run_queues+0x403/0x840 [ 172.082322][ C0] hrtimer_interrupt+0x38c/0xda0 [ 172.087306][ C0] ? debug_smp_processor_id+0x9/0x20 [ 172.092610][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 172.098732][ C0] apic_timer_interrupt+0xf/0x20 [ 172.104138][ C0] [ 172.107080][ C0] RIP: 0010:__memcg_kmem_uncharge+0x21a/0x2e0 [ 172.113146][ C0] Code: 0d 89 e8 59 97 00 00 bf 01 00 00 00 e8 2f e3 9b ff 65 8b 05 d4 fd 4a 7e 85 c0 74 53 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d 49 8d 5f 10 48 89 df be 08 00 00 00 e8 04 c1 fa ff 48 8b 45 d0 [ 172.132757][ C0] RSP: 0018:ffffc900027a73e0 EFLAGS: 00000292 ORIG_RAX: ffffffffffffff13 [ 172.141726][ C0] RAX: 0000000000000001 RBX: ffffea0002605480 RCX: 0000000000000000 [ 172.149730][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0002605480 [ 172.157712][ C0] RBP: ffffc900027a7420 R08: 000000000003a768 R09: ffffed10119442cf [ 172.165693][ C0] R10: ffffed10119442cf R11: 0000000000000000 R12: ffff88808f226820 [ 172.173677][ C0] R13: dffffc0000000000 R14: 1ffff11011e44d04 R15: ffff88808ca21668 [ 172.181688][ C0] ? free_thread_stack+0x12e/0x590 [ 172.186826][ C0] put_task_stack+0xa3/0x130 [ 172.191428][ C0] finish_task_switch+0x3f1/0x550 [ 172.196454][ C0] __schedule+0x9a8/0xcc0 [ 172.200789][ C0] schedule+0x181/0x210 [ 172.204934][ C0] schedule_preempt_disabled+0x13/0x20 [ 172.210382][ C0] __mutex_lock_common+0x1411/0x2e10 [ 172.215668][ C0] ? rtnl_lock+0x17/0x20 [ 172.219936][ C0] mutex_lock_nested+0x1b/0x30 [ 172.224712][ C0] rtnl_lock+0x17/0x20 [ 172.228812][ C0] nsim_create+0x198/0x230 [ 172.233249][ C0] __nsim_dev_port_add+0x289/0x4d0 [ 172.238503][ C0] ? debugfs_create_file_unsafe+0x4a/0x60 [ 172.244229][ C0] ? nsim_bpf_dev_init+0x1eb/0x220 [ 172.249358][ C0] nsim_dev_probe+0xb55/0xef0 [ 172.254050][ C0] nsim_bus_probe+0x15/0x20 [ 172.258544][ C0] really_probe+0x71c/0xf40 [ 172.263040][ C0] driver_probe_device+0xfc/0x260 [ 172.268048][ C0] ? parse_option_str+0x1bf/0x200 [ 172.273113][ C0] __device_attach_driver+0x336/0x3f0 [ 172.278652][ C0] ? coredump_store+0x90/0x90 [ 172.283328][ C0] bus_for_each_drv+0x12b/0x180 [ 172.288171][ C0] __device_attach+0x1ea/0x390 [ 172.292972][ C0] device_initial_probe+0x1a/0x20 [ 172.297990][ C0] bus_probe_device+0xb9/0x1f0 [ 172.302747][ C0] device_add+0x1710/0x1ad0 [ 172.307256][ C0] device_register+0x1d/0x20 [ 172.311832][ C0] new_device_store+0x286/0x510 [ 172.316694][ C0] ? nsim_num_vf+0x50/0x50 [ 172.321143][ C0] bus_attr_store+0x78/0x90 [ 172.325670][ C0] ? bus_attr_show+0x90/0x90 [ 172.330266][ C0] sysfs_kf_write+0x281/0x2f0 [ 172.334954][ C0] ? sysfs_kf_read+0x370/0x370 [ 172.339846][ C0] kernfs_fop_write+0x3e4/0x4e0 [ 172.344702][ C0] ? kernfs_fop_read+0x580/0x580 [ 172.349633][ C0] __vfs_write+0xb8/0x740 [ 172.353970][ C0] ? rcu_read_lock_any_held+0x13d/0x1a0 [ 172.359503][ C0] ? __sb_start_write+0x382/0x430 [ 172.364552][ C0] vfs_write+0x275/0x590 [ 172.368797][ C0] ksys_write+0x117/0x220 [ 172.373144][ C0] __x64_sys_write+0x7b/0x90 [ 172.377742][ C0] do_syscall_64+0xf7/0x1c0 [ 172.382248][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 172.388131][ C0] RIP: 0033:0x414130 [ 172.392136][ C0] Code: b0 89 c8 f7 d8 eb ed b8 6e 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 3d 3d 43 66 00 00 75 14 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 c4 1b 00 00 c3 48 83 ec 08 e8 ca fc ff ff [ 172.411849][ C0] RSP: 002b:00007ffef18e1ac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 172.420277][ C0] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000414130 [ 172.428251][ C0] RDX: 0000000000000003 RSI: 00007ffef18e1af0 RDI: 0000000000000004 [ 172.436407][ C0] RBP: 00007ffef18e1af0 R08: 0000000000000000 R09: 0000000000000003 [ 172.444374][ C0] R10: 0000000000000075 R11: 0000000000000246 R12: 00000000004bfc97 [ 172.452339][ C0] R13: 0000000000000004 R14: 0000000000000000 R15: 0000000000000000