[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 48.013243][ T25] audit: type=1800 audit(1575363425.976:25): pid=8199 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 48.032461][ T25] audit: type=1800 audit(1575363425.976:26): pid=8199 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 48.053943][ T25] audit: type=1800 audit(1575363425.986:27): pid=8199 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 '10.128.1.62' (ECDSA) to the list of known hosts. 2019/12/03 08:57:16 fuzzer started 2019/12/03 08:57:18 dialing manager at 10.128.0.26:38907 2019/12/03 08:57:18 syscalls: 2697 2019/12/03 08:57:18 code coverage: enabled 2019/12/03 08:57:18 comparison tracing: enabled 2019/12/03 08:57:18 extra coverage: extra coverage is not supported by the kernel 2019/12/03 08:57:18 setuid sandbox: enabled 2019/12/03 08:57:18 namespace sandbox: enabled 2019/12/03 08:57:18 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 08:57:18 fault injection: enabled 2019/12/03 08:57:18 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 08:57:18 net packet injection: enabled 2019/12/03 08:57:18 net device setup: enabled 2019/12/03 08:57:18 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 08:57:18 devlink PCI setup: PCI device 0000:00:10.0 is not available 08:57:19 executing program 0: r0 = openat$cgroup_root(0xffffffffffffff9c, &(0x7f0000000380)='./cgroup.cpu\x00', 0x200002, 0x0) r1 = openat$cgroup_int(r0, &(0x7f0000000000)='cpuset.cpus\x00', 0x2, 0x0) sendfile(r1, r1, 0x0, 0x7fffffff) 08:57:19 executing program 1: r0 = socket$can_raw(0x1d, 0x3, 0x1) setsockopt$CAN_RAW_RECV_OWN_MSGS(r0, 0x65, 0x4, 0x0, 0x0) syzkaller login: [ 61.684409][ T8364] IPVS: ftp: loaded support on port[0] = 21 [ 61.757192][ T8366] IPVS: ftp: loaded support on port[0] = 21 08:57:19 executing program 2: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000440)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = syz_open_dev$usbmon(0x0, 0x45, 0x0) recvfrom$inet(r2, 0x0, 0x2a1, 0x40002060, 0x0, 0x0) r3 = perf_event_open(&(0x7f0000000bc0)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x81, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}, 0x0, 0x3f, 0x0, 0x0, 0x0, 0x8}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) getsockopt$inet_mtu(0xffffffffffffffff, 0x0, 0xa, &(0x7f0000000580), 0x0) rmdir(&(0x7f0000000480)='./file1\x00') stat(&(0x7f0000000500)='./file1\x00', 0x0) r4 = shmget$private(0x0, 0x3000, 0x4, &(0x7f0000ffb000/0x3000)=nil) shmctl$SHM_STAT(r4, 0xd, 0x0) r5 = socket$inet_udplite(0x2, 0x2, 0x88) ioctl(r5, 0x1000008912, &(0x7f0000000040)="11dca50d5e0bcfe47bf070") getsockopt$sock_cred(r5, 0x1, 0x24, &(0x7f0000caaffb), &(0x7f0000000000)=0xc) accept(r0, 0x0, &(0x7f0000000540)) r6 = socket$inet_udplite(0x2, 0x2, 0x88) ioctl(r6, 0x1000008912, &(0x7f0000000040)="11dca50d5e0bcfe47bf070") getsockopt$sock_cred(r6, 0x1, 0x24, &(0x7f0000caaffb), 0x0) getsockopt$inet_IP_XFRM_POLICY(r6, 0x0, 0x11, &(0x7f00000009c0)={{{@in6=@remote, @in=@remote}}, {{@in6=@dev}, 0x0, @in6=@mcast2}}, &(0x7f0000000380)=0xe8) lstat(&(0x7f0000000180)='./file1\x00', &(0x7f0000000700)) gettid() ioctl$sock_FIOGETOWN(r1, 0x8903, &(0x7f0000000140)) ioctl$TIOCGPGRP(r2, 0x540f, &(0x7f0000000840)=0x0) getpgid(r7) r8 = syz_open_dev$loop(&(0x7f00000001c0)='/dev/loop#\x00', 0x0, 0x80200) ioctl$BLKTRACETEARDOWN(r2, 0x1276, 0x0) ioctl$BLKTRACESETUP(r8, 0xc0481273, &(0x7f0000000080)={[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x48], 0x8000, 0x400, 0x7d, 0xfffe, 0x100000005}) perf_event_open(&(0x7f0000000080)={0x3, 0x70, 0x0, 0x0, 0x0, 0x40, 0x0, 0x8, 0x400, 0xe, 0xd00, 0x7f, 0x2, 0xfffffffffffffff8, 0x0, 0xffffffffffffffff, 0x8001, 0x4, 0x9e6f, 0x73d9, 0x6, 0x0, 0x0, 0x0, 0xffffffffffffffff, 0x2, 0x4, 0x0, 0x5, 0x3, 0x0, 0x3, 0x1, 0x6, 0x401, 0x1, 0x0, 0x200, 0x0, 0x80000000, 0x0, @perf_bp={0x0, 0x8}, 0x100, 0x0, 0x5, 0x0, 0x0, 0x8a80, 0xc1f}, 0x0, 0xffffffffffffffff, r3, 0x0) request_key(&(0x7f00000005c0)='cifs.idmap\x00', &(0x7f0000000600)={'syz', 0x0}, &(0x7f0000000240)='kfyring&-\x00', 0x0) add_key$keyring(&(0x7f0000000340)='keyring\x00', &(0x7f0000000000)={'syz', 0x2}, 0x0, 0x0, 0xfffffffffffffffc) io_setup(0xfe, &(0x7f0000000200)) memfd_create(&(0x7f0000000900)='\x00\x05\xdb\x1f]\x0f>\x04\xdb\xbf\x02\x04\x80\xff\xc5\xaf\xe4*\xa6\n\xc1\x05\xdc\x87\x1ct\xea\b\xa1!3\\\xe9\xe7\xac\"\xed\x96F\xec\xdcd\xcan6\x1d\xb3|\xbd\xe2\xc6\xf3\t\xf7\x89K\xc5AG\xf2\xc2]{\xd8\x02iD\xb0\xefXv\x92\xc1\xceg\a\"\x0f\xe0\"w`6\x89', 0x3) setsockopt$inet_int(r2, 0x0, 0xc, &(0x7f0000000280)=0x2, 0x2) lstat(&(0x7f00000002c0)='./file1\x00', &(0x7f0000000640)) sendto$inet(0xffffffffffffffff, 0x0, 0x3aa, 0x4000000, 0x0, 0xfea3) setsockopt$inet_tcp_TCP_FASTOPEN_KEY(r2, 0x6, 0x21, &(0x7f0000000100)="f500", 0x10) [ 61.865725][ T8364] chnl_net:caif_netlink_parms(): no params data found [ 61.961763][ T8364] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.971143][ T8364] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.979954][ T8364] device bridge_slave_0 entered promiscuous mode [ 61.991804][ T8364] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.999926][ T8364] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.008181][ T8364] device bridge_slave_1 entered promiscuous mode [ 62.021777][ T8366] chnl_net:caif_netlink_parms(): no params data found [ 62.057973][ T8364] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.094214][ T8364] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.143466][ T8364] team0: Port device team_slave_0 added [ 62.174199][ T8364] team0: Port device team_slave_1 added 08:57:20 executing program 3: r0 = socket$netlink(0x10, 0x3, 0x8000000004) writev(r0, &(0x7f0000000140)=[{&(0x7f0000000080)="580000001400192340834b80040d8c560a067f0200ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100080c50010020000000000000", 0x58}], 0x1) [ 62.194635][ T8370] IPVS: ftp: loaded support on port[0] = 21 [ 62.208623][ T8366] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.215748][ T8366] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.223871][ T8366] device bridge_slave_0 entered promiscuous mode [ 62.290649][ T8364] device hsr_slave_0 entered promiscuous mode [ 62.357188][ T8364] device hsr_slave_1 entered promiscuous mode 08:57:20 executing program 4: socket(0x10, 0x803, 0x0) unshare(0x40600) mq_notify(0xffffffffffffffff, &(0x7f0000000040)={0x20000000, 0x4000000000003, 0x2, @thr={0x0, 0x0}}) [ 62.407923][ T8366] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.415024][ T8366] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.425174][ T8366] device bridge_slave_1 entered promiscuous mode [ 62.480098][ T8372] IPVS: ftp: loaded support on port[0] = 21 [ 62.574834][ T8366] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 62.602900][ T8364] netdevsim netdevsim0 netdevsim0: renamed from eth0 08:57:20 executing program 5: r0 = socket$inet_tcp(0x2, 0x1, 0x0) setsockopt$inet_tcp_TCP_FASTOPEN_KEY(r0, 0x6, 0x21, &(0x7f00000000c0)="420254c77334e44d95e4c0cedcaf347c", 0x10) setsockopt$inet_tcp_TCP_FASTOPEN_KEY(r0, 0x6, 0x21, &(0x7f0000000080)="420254c77334e44d95e4c0cedcaf347c", 0x10) [ 62.683159][ T8366] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 62.687946][ T8374] IPVS: ftp: loaded support on port[0] = 21 [ 62.712477][ T8364] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 62.796990][ T8366] team0: Port device team_slave_0 added [ 62.808501][ T8364] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 62.830952][ T8364] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 62.912870][ T8366] team0: Port device team_slave_1 added [ 62.944234][ T8370] chnl_net:caif_netlink_parms(): no params data found [ 62.953362][ T8377] IPVS: ftp: loaded support on port[0] = 21 [ 63.030142][ T8366] device hsr_slave_0 entered promiscuous mode [ 63.068710][ T8366] device hsr_slave_1 entered promiscuous mode [ 63.117673][ T8366] debugfs: Directory 'hsr0' with parent '/' already present! [ 63.257937][ T8366] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 63.310991][ T8366] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 63.379278][ T8366] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 63.419210][ T8374] chnl_net:caif_netlink_parms(): no params data found [ 63.433112][ T8370] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.440369][ T8370] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.448584][ T8370] device bridge_slave_0 entered promiscuous mode [ 63.455779][ T8372] chnl_net:caif_netlink_parms(): no params data found [ 63.468679][ T8366] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 63.531067][ T8370] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.538735][ T8370] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.546540][ T8370] device bridge_slave_1 entered promiscuous mode [ 63.586695][ T8372] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.594523][ T8372] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.602280][ T8372] device bridge_slave_0 entered promiscuous mode [ 63.610336][ T8372] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.617537][ T8372] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.625345][ T8372] device bridge_slave_1 entered promiscuous mode [ 63.648211][ T8370] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.660513][ T8370] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.685387][ T8374] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.693601][ T8374] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.701936][ T8374] device bridge_slave_0 entered promiscuous mode [ 63.740870][ T8374] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.748309][ T8374] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.756541][ T8374] device bridge_slave_1 entered promiscuous mode [ 63.773206][ T8370] team0: Port device team_slave_0 added [ 63.790272][ T8372] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.804381][ T8372] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.819886][ T8377] chnl_net:caif_netlink_parms(): no params data found [ 63.834495][ T8370] team0: Port device team_slave_1 added [ 63.865461][ T8372] team0: Port device team_slave_0 added [ 63.876717][ T8372] team0: Port device team_slave_1 added [ 63.909234][ T8370] device hsr_slave_0 entered promiscuous mode [ 63.948162][ T8370] device hsr_slave_1 entered promiscuous mode [ 63.987057][ T8370] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.011375][ T8374] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.024169][ T8374] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.051064][ T8364] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.084991][ T8374] team0: Port device team_slave_0 added [ 64.113363][ T8377] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.122246][ T8377] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.130908][ T8377] device bridge_slave_0 entered promiscuous mode [ 64.140578][ T8377] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.148197][ T8377] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.156030][ T8377] device bridge_slave_1 entered promiscuous mode [ 64.164240][ T8374] team0: Port device team_slave_1 added [ 64.174497][ T8364] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.229873][ T8372] device hsr_slave_0 entered promiscuous mode [ 64.287445][ T8372] device hsr_slave_1 entered promiscuous mode [ 64.327159][ T8372] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.352248][ T3425] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.361699][ T3425] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.440930][ T8374] device hsr_slave_0 entered promiscuous mode [ 64.498200][ T8374] device hsr_slave_1 entered promiscuous mode [ 64.537139][ T8374] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.560607][ T8366] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.567693][ T8370] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 64.609519][ T8370] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 64.649847][ T8377] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.662290][ T8377] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.691523][ T2873] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 64.704105][ T2873] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.712972][ T2873] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.720299][ T2873] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.729960][ T2873] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.738308][ T8370] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 64.786453][ T8370] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 64.855484][ T8366] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.874115][ T8377] team0: Port device team_slave_0 added [ 64.885834][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.896477][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.905177][ T43] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.912516][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.920874][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 64.928758][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.936608][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 64.970256][ T8377] team0: Port device team_slave_1 added [ 64.980359][ T8374] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 65.010062][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.019216][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.030834][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.038023][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.046038][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.055087][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.063733][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.071216][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 65.079010][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.087940][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.096725][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.105342][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.113969][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.123532][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.131598][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.141800][ T8372] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 65.211713][ T3425] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.220491][ T3425] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.230546][ T8374] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 65.329573][ T8374] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 65.399650][ T8374] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 65.433097][ T8372] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 65.503945][ T8372] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 65.552117][ T8364] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 65.564241][ T8364] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 65.619752][ T8377] device hsr_slave_0 entered promiscuous mode [ 65.657366][ T8377] device hsr_slave_1 entered promiscuous mode [ 65.717086][ T8377] debugfs: Directory 'hsr0' with parent '/' already present! [ 65.725140][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.738282][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 65.747937][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.767056][ T8372] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 65.842780][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.852324][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.864191][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.872866][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 65.902791][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 65.912064][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.920820][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 65.930156][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 65.939025][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 65.947574][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 65.955825][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 65.963676][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 65.989169][ T8366] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.004174][ T8364] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.018108][ T8377] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 66.051086][ T8377] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 66.135577][ T8377] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 66.179467][ T8377] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 66.258035][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.265524][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.323570][ T8370] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.335656][ T8366] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 171.306800][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 171.313586][ C0] rcu: 0-...!: (1 GPs behind) idle=eba/1/0x4000000000000002 softirq=10879/10882 fqs=2 [ 171.323444][ C0] (t=10500 jiffies g=6901 q=277) [ 171.328470][ C0] rcu: rcu_preempt kthread starved for 10495 jiffies! g6901 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 171.339556][ C0] rcu: RCU grace-period kthread stack dump: [ 171.345430][ C0] rcu_preempt R running task 28864 10 2 0x80004000 [ 171.353326][ C0] Call Trace: [ 171.356615][ C0] __schedule+0x9a0/0xcc0 [ 171.360939][ C0] schedule+0x181/0x210 [ 171.365079][ C0] schedule_timeout+0x14f/0x240 [ 171.369921][ C0] ? run_local_timers+0x120/0x120 [ 171.374937][ C0] rcu_gp_kthread+0xed8/0x1770 [ 171.379694][ C0] kthread+0x332/0x350 [ 171.383750][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 171.388844][ C0] ? kthread_blkcg+0xe0/0xe0 [ 171.393422][ C0] ret_from_fork+0x24/0x30 [ 171.397838][ C0] NMI backtrace for cpu 0 [ 171.402157][ C0] CPU: 0 PID: 8372 Comm: syz-executor.3 Not tainted 5.4.0-syzkaller #0 [ 171.410382][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 171.420421][ C0] Call Trace: [ 171.423695][ C0] [ 171.426538][ C0] dump_stack+0x1fb/0x318 [ 171.430860][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 171.435699][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 171.441839][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 171.447895][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 171.453876][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 171.459759][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 171.464862][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 171.470065][ C0] ? trace_hardirqs_off+0x74/0x80 [ 171.475082][ C0] update_process_times+0x12d/0x180 [ 171.480271][ C0] tick_sched_timer+0x263/0x420 [ 171.485131][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 171.490665][ C0] __hrtimer_run_queues+0x403/0x840 [ 171.495866][ C0] hrtimer_interrupt+0x38c/0xda0 [ 171.500812][ C0] ? debug_smp_processor_id+0x9/0x20 [ 171.506097][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 171.511636][ C0] apic_timer_interrupt+0xf/0x20 [ 171.516726][ C0] [ 171.519654][ C0] RIP: 0010:free_thread_stack+0x177/0x590 [ 171.525367][ C0] Code: 80 3c 28 00 74 08 48 89 df e8 25 a4 69 00 48 8b 3b be fc ff ff ff e8 28 04 00 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 09 a4 69 00 <49> 8b 1c 24 48 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 [ 171.544976][ C0] RSP: 0018:ffffc900020e7a90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 171.553461][ C0] RAX: ffffffff81487433 RBX: ffff888095350b08 RCX: ffff888091c32680 [ 171.561417][ C0] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0002720440 [ 171.569375][ C0] RBP: ffffc900020e7ac8 R08: dffffc0000000000 R09: fffffbfff120248a [ 171.577331][ C0] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff8880a7a3dc20 [ 171.585288][ C0] R13: dffffc0000000000 R14: 1ffff11014f47b84 R15: ffff8880a86055a8 [ 171.593259][ C0] ? mod_memcg_page_state+0x123/0x190 [ 171.598634][ C0] put_task_stack+0xa3/0x130 [ 171.603212][ C0] finish_task_switch+0x3f1/0x550 [ 171.608229][ C0] __schedule+0x9a8/0xcc0 [ 171.612647][ C0] ? ___preempt_schedule+0x16/0x18 [ 171.617749][ C0] preempt_schedule+0xdb/0x120 [ 171.622498][ C0] ___preempt_schedule+0x16/0x18 [ 171.627426][ C0] ? debug_object_activate+0x118/0x6f0 [ 171.632866][ C0] _raw_spin_unlock_irqrestore+0xcc/0xe0 [ 171.638487][ C0] debug_object_activate+0x118/0x6f0 [ 171.643762][ C0] ? __fput+0x740/0x740 [ 171.647907][ C0] __call_rcu+0x3d/0x670 [ 171.652223][ C0] ? percpu_counter_add_batch+0x153/0x170 [ 171.657947][ C0] call_rcu+0xb/0x10 [ 171.661827][ C0] __fput+0x581/0x740 [ 171.665802][ C0] ____fput+0x15/0x20 [ 171.669770][ C0] task_work_run+0x17e/0x1b0 [ 171.674351][ C0] prepare_exit_to_usermode+0x483/0x5b0 [ 171.679891][ C0] syscall_return_slowpath+0x113/0x4a0 [ 171.685336][ C0] do_syscall_64+0x11f/0x1c0 [ 171.689927][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 171.695805][ C0] RIP: 0033:0x45e433 [ 171.699714][ C0] Code: 48 89 ee 48 89 e7 e8 2c 1f fa ff 31 c0 48 89 e2 be 33 89 00 00 89 df e8 bb c0 ff ff 85 c0 78 17 48 63 fb b8 03 00 00 00 0f 05 <8b> 44 24 10 48 83 c4 38 5b 5d c3 66 90 48 c7 c2 d4 ff ff ff 48 63 [ 171.719304][ C0] RSP: 002b:00007ffff3df6210 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 171.727699][ C0] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 000000000045e433 [ 171.735671][ C0] RDX: 00007ffff3df6210 RSI: 0000000000008933 RDI: 0000000000000004 [ 171.743660][ C0] RBP: 00000000004bfb87 R08: 0000000000000008 R09: 0000000000000005 [ 171.751632][ C0] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000003 [ 171.759675][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffff3df6460