[ 60.975957][ T26] audit: type=1800 audit(1572204303.611:25): pid=8883 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 60.996860][ T26] audit: type=1800 audit(1572204303.611:26): pid=8883 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 61.019328][ T26] audit: type=1800 audit(1572204303.611:27): pid=8883 uid=0 auid=4294967295 ses=4294967295 subj==unconfined 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. [ 61.659820][ T8953] sshd (8953) used greatest stack depth: 22888 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.127' (ECDSA) to the list of known hosts. 2019/10/27 19:25:11 fuzzer started 2019/10/27 19:25:13 dialing manager at 10.128.0.26:34793 2019/10/27 19:25:13 syscalls: 2534 2019/10/27 19:25:13 code coverage: enabled 2019/10/27 19:25:13 comparison tracing: enabled 2019/10/27 19:25:13 extra coverage: extra coverage is not supported by the kernel 2019/10/27 19:25:13 setuid sandbox: enabled 2019/10/27 19:25:13 namespace sandbox: enabled 2019/10/27 19:25:13 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/27 19:25:13 fault injection: enabled 2019/10/27 19:25:13 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/27 19:25:13 net packet injection: enabled 2019/10/27 19:25:13 net device setup: enabled 2019/10/27 19:25:13 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 19:27:05 executing program 0: mmap(&(0x7f0000000000/0xfbe000)=nil, 0xfbe000, 0x2, 0x31, 0xffffffffffffffff, 0x0) remap_file_pages(&(0x7f00002ec000/0x200000)=nil, 0x200000, 0x0, 0x0, 0x0) shmget$private(0x0, 0x1000, 0x54001800, &(0x7f0000fff000/0x1000)=nil) shmat(0x0, &(0x7f0000000000/0x4000)=nil, 0xffffffffffffffff) ioctl$EVIOCGSND(0xffffffffffffffff, 0x8040451a, &(0x7f0000000000)=""/139) mbind(&(0x7f0000012000/0xc00000)=nil, 0xc00009, 0x0, 0x0, 0x0, 0x2000000000002) epoll_ctl$EPOLL_CTL_ADD(0xffffffffffffffff, 0x1, 0xffffffffffffffff, 0x0) 19:27:05 executing program 1: recvmmsg(0xffffffffffffffff, &(0x7f0000003140)=[{{&(0x7f0000000040)=@ipx, 0x80, 0x0}}], 0x1, 0x0, 0x0) r0 = syz_open_procfs(0x0, &(0x7f0000000540)='uid_map\x00') perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) preadv(r0, &(0x7f00000017c0), 0x1a4, 0x0) syzkaller login: [ 183.387244][ T9050] IPVS: ftp: loaded support on port[0] = 21 19:27:06 executing program 2: r0 = socket$kcm(0x2b, 0x8000000000001, 0x0) ioctl$PERF_EVENT_IOC_ENABLE(r0, 0x8912, 0x400200) r1 = socket$kcm(0x10, 0x2, 0x10) sendmsg$kcm(r1, &(0x7f0000000040)={0x0, 0x6, &(0x7f0000000100)=[{&(0x7f0000000000)="2e0000001900d927e65de0875f188dfa1ce154dfeaa06ec4a86e8f32e00586f900000000000000006f0400000000", 0x2e}], 0x1}, 0x0) [ 183.566583][ T9052] IPVS: ftp: loaded support on port[0] = 21 [ 183.636427][ T9050] chnl_net:caif_netlink_parms(): no params data found [ 183.754071][ T9055] IPVS: ftp: loaded support on port[0] = 21 [ 183.769747][ T9050] bridge0: port 1(bridge_slave_0) entered blocking state [ 183.782686][ T9050] bridge0: port 1(bridge_slave_0) entered disabled state [ 183.791048][ T9050] device bridge_slave_0 entered promiscuous mode 19:27:06 executing program 3: r0 = bpf$MAP_CREATE(0x0, &(0x7f0000000000)={0x6, 0x4, 0x602, 0x1}, 0x2c) bpf$MAP_LOOKUP_ELEM(0x1, &(0x7f0000000140)={r0, &(0x7f0000000100), 0x0}, 0x20) [ 183.831503][ T9050] bridge0: port 2(bridge_slave_1) entered blocking state [ 183.838627][ T9050] bridge0: port 2(bridge_slave_1) entered disabled state [ 183.861663][ T9050] device bridge_slave_1 entered promiscuous mode [ 183.934048][ T9052] chnl_net:caif_netlink_parms(): no params data found [ 183.955252][ T9050] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 183.999781][ T9050] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 184.125138][ T9052] bridge0: port 1(bridge_slave_0) entered blocking state [ 184.134411][ T9052] bridge0: port 1(bridge_slave_0) entered disabled state [ 184.142664][ T9052] device bridge_slave_0 entered promiscuous mode 19:27:06 executing program 4: sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000140)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f00000002c0)=ANY=[@ANYBLOB="840000002c00010700"/20, @ANYRES32, @ANYBLOB="0300000000000000fc8000000800010075333200580002001400050000000000000000000000000000000000400006003000010000000000000000000000000000000000000000001300000000000000f8fbac32c9712b8c22e1e9d77ba189c7460999d8f31a44af4c7a938966d5e87d55e05dae3332c116fa93f45e2ed1edb0c997709ac6c600"/146], 0x84}}, 0x0) r0 = socket(0x4000000000010, 0x1000000000080002, 0x0) sendmmsg$alg(r0, &(0x7f0000000140), 0x30a, 0x0) [ 184.168450][ T9050] team0: Port device team_slave_0 added [ 184.182373][ T9050] team0: Port device team_slave_1 added [ 184.188856][ T9052] bridge0: port 2(bridge_slave_1) entered blocking state [ 184.196496][ T9052] bridge0: port 2(bridge_slave_1) entered disabled state [ 184.206924][ T9052] device bridge_slave_1 entered promiscuous mode [ 184.226299][ T9055] chnl_net:caif_netlink_parms(): no params data found [ 184.258928][ T9059] IPVS: ftp: loaded support on port[0] = 21 [ 184.323659][ T9050] device hsr_slave_0 entered promiscuous mode [ 184.360956][ T9050] device hsr_slave_1 entered promiscuous mode 19:27:07 executing program 5: r0 = socket(0x11, 0x2, 0x0) r1 = syz_open_dev$ndb(&(0x7f00000001c0)='/dev/nbd#\x00', 0x0, 0x0) r2 = syz_open_dev$ndb(0x0, 0x0, 0x0) ioctl$NBD_SET_FLAGS(r1, 0xab0a, 0x5) ioctl$NBD_SET_SOCK(r1, 0xab00, r0) ioctl$NBD_CLEAR_SOCK(r2, 0xab03) [ 184.418461][ T9052] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 184.456977][ T9061] IPVS: ftp: loaded support on port[0] = 21 [ 184.497854][ T9052] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 184.564183][ T9055] bridge0: port 1(bridge_slave_0) entered blocking state [ 184.572620][ T9055] bridge0: port 1(bridge_slave_0) entered disabled state [ 184.582013][ T9055] device bridge_slave_0 entered promiscuous mode [ 184.599470][ T9055] bridge0: port 2(bridge_slave_1) entered blocking state [ 184.617676][ T9055] bridge0: port 2(bridge_slave_1) entered disabled state [ 184.628722][ T9055] device bridge_slave_1 entered promiscuous mode [ 184.644277][ T9052] team0: Port device team_slave_0 added [ 184.654577][ T9052] team0: Port device team_slave_1 added [ 184.714804][ T9063] IPVS: ftp: loaded support on port[0] = 21 [ 184.730864][ T9055] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 184.746853][ T9055] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 184.783811][ T9052] device hsr_slave_0 entered promiscuous mode [ 184.821996][ T9052] device hsr_slave_1 entered promiscuous mode [ 184.860903][ T9052] debugfs: Directory 'hsr0' with parent '/' already present! [ 184.909653][ T9055] team0: Port device team_slave_0 added [ 184.919200][ T9055] team0: Port device team_slave_1 added [ 185.063131][ T9055] device hsr_slave_0 entered promiscuous mode [ 185.111212][ T9055] device hsr_slave_1 entered promiscuous mode [ 185.180823][ T9055] debugfs: Directory 'hsr0' with parent '/' already present! [ 185.197602][ T9059] chnl_net:caif_netlink_parms(): no params data found [ 185.207040][ T9061] chnl_net:caif_netlink_parms(): no params data found [ 185.253195][ T9050] 8021q: adding VLAN 0 to HW filter on device bond0 [ 185.332278][ T9061] bridge0: port 1(bridge_slave_0) entered blocking state [ 185.339430][ T9061] bridge0: port 1(bridge_slave_0) entered disabled state [ 185.348469][ T9061] device bridge_slave_0 entered promiscuous mode [ 185.388289][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 185.397805][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 185.406918][ T9061] bridge0: port 2(bridge_slave_1) entered blocking state [ 185.414934][ T9061] bridge0: port 2(bridge_slave_1) entered disabled state [ 185.423445][ T9061] device bridge_slave_1 entered promiscuous mode [ 185.443636][ T9050] 8021q: adding VLAN 0 to HW filter on device team0 [ 185.454408][ T9059] bridge0: port 1(bridge_slave_0) entered blocking state [ 185.462003][ T9059] bridge0: port 1(bridge_slave_0) entered disabled state [ 185.469988][ T9059] device bridge_slave_0 entered promiscuous mode [ 185.478390][ T9059] bridge0: port 2(bridge_slave_1) entered blocking state [ 185.485839][ T9059] bridge0: port 2(bridge_slave_1) entered disabled state [ 185.493862][ T9059] device bridge_slave_1 entered promiscuous mode [ 185.514617][ T9061] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 185.540813][ T9059] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 185.569065][ T9061] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 185.597539][ T9061] team0: Port device team_slave_0 added [ 185.605122][ T9059] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 185.636678][ T9063] chnl_net:caif_netlink_parms(): no params data found [ 185.648076][ T3531] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 185.657378][ T3531] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 185.667300][ T3531] bridge0: port 1(bridge_slave_0) entered blocking state [ 185.674930][ T3531] bridge0: port 1(bridge_slave_0) entered forwarding state [ 185.684595][ T3531] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 185.694641][ T9061] team0: Port device team_slave_1 added [ 185.769397][ T9059] team0: Port device team_slave_0 added [ 185.824065][ T9061] device hsr_slave_0 entered promiscuous mode [ 185.861256][ T9061] device hsr_slave_1 entered promiscuous mode [ 185.910727][ T9061] debugfs: Directory 'hsr0' with parent '/' already present! [ 185.925534][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 185.934870][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 185.944550][ T3332] bridge0: port 2(bridge_slave_1) entered blocking state [ 185.951829][ T3332] bridge0: port 2(bridge_slave_1) entered forwarding state [ 185.967046][ T9052] 8021q: adding VLAN 0 to HW filter on device bond0 [ 185.981604][ T9059] team0: Port device team_slave_1 added [ 185.988589][ T9063] bridge0: port 1(bridge_slave_0) entered blocking state [ 185.995886][ T9063] bridge0: port 1(bridge_slave_0) entered disabled state [ 186.004965][ T9063] device bridge_slave_0 entered promiscuous mode [ 186.015000][ T9066] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 186.052267][ T9063] bridge0: port 2(bridge_slave_1) entered blocking state [ 186.059380][ T9063] bridge0: port 2(bridge_slave_1) entered disabled state [ 186.067431][ T9063] device bridge_slave_1 entered promiscuous mode [ 186.079992][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 186.089315][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 186.098266][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 186.106867][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 186.115901][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 186.137659][ T9050] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 186.149119][ T9050] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 186.173067][ T9052] 8021q: adding VLAN 0 to HW filter on device team0 [ 186.188682][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 186.197622][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 186.207027][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 186.216408][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 186.225368][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 186.233913][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 186.242071][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 186.250337][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 186.313050][ T9059] device hsr_slave_0 entered promiscuous mode [ 186.351193][ T9059] device hsr_slave_1 entered promiscuous mode [ 186.430986][ T9059] debugfs: Directory 'hsr0' with parent '/' already present! [ 186.442158][ T9063] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 186.455865][ T9063] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 186.472527][ T9055] 8021q: adding VLAN 0 to HW filter on device bond0 [ 186.482816][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 186.491646][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 186.500033][ T44] bridge0: port 1(bridge_slave_0) entered blocking state [ 186.507173][ T44] bridge0: port 1(bridge_slave_0) entered forwarding state [ 186.515110][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 186.524439][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 186.533445][ T44] bridge0: port 2(bridge_slave_1) entered blocking state [ 186.540582][ T44] bridge0: port 2(bridge_slave_1) entered forwarding state [ 186.552615][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 186.566532][ T9050] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 186.619484][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 186.627797][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 186.636488][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 186.666962][ T9063] team0: Port device team_slave_0 added [ 186.677792][ T9063] team0: Port device team_slave_1 added [ 186.702331][ T9055] 8021q: adding VLAN 0 to HW filter on device team0 [ 186.710253][ T9066] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 186.788301][ T9063] device hsr_slave_0 entered promiscuous mode [ 186.831168][ T9063] device hsr_slave_1 entered promiscuous mode [ 186.881140][ T9063] debugfs: Directory 'hsr0' with parent '/' already present! [ 186.892089][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 186.901536][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 186.910151][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 186.919872][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 186.946896][ T9052] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 186.958022][ T9052] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 186.994825][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 187.002974][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 187.011729][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 187.020158][ T3332] bridge0: port 1(bridge_slave_0) entered blocking state [ 187.027260][ T3332] bridge0: port 1(bridge_slave_0) entered forwarding state [ 187.035086][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 187.044204][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 187.052826][ T3332] bridge0: port 2(bridge_slave_1) entered blocking state [ 187.059951][ T3332] bridge0: port 2(bridge_slave_1) entered forwarding state [ 187.067658][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 187.076424][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 187.084958][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 187.093516][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 187.102005][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 187.111531][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 187.119490][ T3332] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 187.175768][ T9066] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 187.198126][ T9055] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 187.216585][ T9055] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 187.240874][ T9076] mmap: syz-executor.0 (9076) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.rst. [ 187.252581][ T9052] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 187.296894][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 187.305115][ T26] kauditd_printk_skb: 3 callbacks suppressed [ 187.305128][ T26] audit: type=1800 audit(1572204429.931:31): pid=9076 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed comm="syz-executor.0" name="SYSV00000000" dev="hugetlbfs" ino=0 res=0 19:27:10 executing program 0: unshare(0x8000400) r0 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0) getdents64(r0, 0x0, 0x0) [ 187.344085][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 187.359593][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 187.372549][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 187.389807][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 187.399356][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 187.408152][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 187.417013][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 187.456655][ T9055] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 187.473991][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready 19:27:10 executing program 0: recvmmsg(0xffffffffffffffff, &(0x7f0000003140)=[{{&(0x7f0000000080)=@ipx, 0x80, 0x0, 0x0, 0x0, 0x182}}], 0x1, 0x0, 0x0) r0 = syz_open_procfs(0x0, &(0x7f0000000200)='maps\x00') perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 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, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) getsockopt$IPT_SO_GET_ENTRIES(0xffffffffffffffff, 0x0, 0x41, 0x0, 0x0) perf_event_open(&(0x7f0000000440)={0x2, 0x70, 0xb9, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) preadv(r0, &(0x7f00000017c0), 0x351, 0x0) [ 187.500322][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 187.576212][ T9059] 8021q: adding VLAN 0 to HW filter on device bond0 [ 187.612608][ T9061] 8021q: adding VLAN 0 to HW filter on device bond0 [ 187.709869][ T9063] 8021q: adding VLAN 0 to HW filter on device bond0 19:27:10 executing program 1: mkdir(&(0x7f0000000180)='./file0\x00', 0x0) clone(0x103, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) mount(0x0, &(0x7f0000000380)='./file0\x00', &(0x7f0000000080)='nfs\x00\xef\xf1a\x17\x12\x9e\xd0Y\x8a\xa8\xd4', 0x0, &(0x7f0000000200)='vmnet0md5sumsecurityGPL{\x00') [ 187.763935][ C0] hrtimer: interrupt took 32220 ns [ 187.766332][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 187.779046][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 187.789987][ T9102] netlink: 26 bytes leftover after parsing attributes in process `syz-executor.2'. [ 187.815564][ T9061] 8021q: adding VLAN 0 to HW filter on device team0 [ 187.835835][ T9059] 8021q: adding VLAN 0 to HW filter on device team0 [ 187.856163][ T2964] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready 19:27:10 executing program 0: r0 = gettid() semop(0x0, &(0x7f0000000100)=[{}], 0x1) timer_create(0x0, &(0x7f0000000100)={0x0, 0x12, 0x0, @thr={0x0, 0x0}}, &(0x7f0000044000)) timer_settime(0x0, 0x0, &(0x7f0000000000)={{0x0, 0x1c9c380}, {0x0, 0x9}}, 0x0) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r2 = dup(r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) tkill(r0, 0x15) [ 187.867959][ T9105] NFS: bad mount option value specified: vmnet0md5sumsecurityGPL{ [ 187.877552][ T2964] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 187.893419][ T2964] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 187.894416][ T9107] NFS: bad mount option value specified: vmnet0md5sumsecurityGPL{ [ 187.902522][ T2964] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready 19:27:10 executing program 1: r0 = syz_open_dev$usbfs(&(0x7f0000001280)='/dev/bus/usb/00#/00#\x00', 0x200, 0x40802) ioctl$USBDEVFS_SETINTERFACE(r0, 0x8004550f, &(0x7f0000000140)) [ 187.938122][ T2964] bridge0: port 1(bridge_slave_0) entered blocking state [ 187.945393][ T2964] bridge0: port 1(bridge_slave_0) entered forwarding state [ 187.958720][ T2964] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 187.967819][ T2964] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 187.983305][ T2964] bridge0: port 1(bridge_slave_0) entered blocking state [ 187.990550][ T2964] bridge0: port 1(bridge_slave_0) entered forwarding state [ 188.011057][ T2964] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 188.019141][ T2964] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready 19:27:10 executing program 1: bpf$BPF_BTF_LOAD(0x12, &(0x7f0000000280)={&(0x7f0000000000)=ANY=[@ANYBLOB="9feb010018000000000000003400000034000000060000000400000000000008000000000000000000000001000000180000040000000000010000050000000000000000010000000000000000000000da001ebfa55cbb1b15b15bd751f53ceef41444bec24eb423a9ce31f21eed775bbe9939dfd0a9810e4c483a31468e37dc2552f9a7bad1882e280fee194a0b04009739c386f88f62dca8a14fc1c52734000000000000000000"], &(0x7f0000000340)=""/142, 0x52, 0x8e, 0x1}, 0x20) 19:27:10 executing program 2: syslog(0x2, &(0x7f0000000040)=""/8, 0x8) 19:27:10 executing program 0: r0 = socket$inet_icmp_raw(0x2, 0x3, 0x1) ioctl(r0, 0x1000008912, &(0x7f0000000040)="0800b5055e0bcfe87b0071") unshare(0x8000400) r1 = openat$proc_capi20ncci(0xffffffffffffff9c, &(0x7f0000000000)='/proc/capi/capi20ncci\x00', 0x0, 0x0) lseek(r1, 0x0, 0x0) [ 188.083482][ T9063] 8021q: adding VLAN 0 to HW filter on device team0 [ 188.112273][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 188.120183][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 188.192874][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready 19:27:10 executing program 1: r0 = socket$inet(0x2, 0x4000000000000001, 0x0) bind$inet(r0, &(0x7f0000000280)={0x2, 0x4e23, @multicast1}, 0x10) sendto$inet(r0, 0x0, 0x3bd, 0x200007fd, &(0x7f0000000080)={0x2, 0x4e23, @local}, 0x10) sendmmsg$inet(r0, &(0x7f0000000b40)=[{{0x0, 0x0, &(0x7f0000000200)=[{&(0x7f0000000100)="8c", 0x1}], 0x1}}], 0x1, 0x0) recvmmsg(r0, &(0x7f0000001100)=[{{0x0, 0x0, &(0x7f00000003c0)=[{&(0x7f00000006c0)=""/203, 0xcb}], 0x1}}, {{0x0, 0x0, 0x0}}], 0x2, 0x100c4, 0x0) [ 188.235365][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 188.249763][ T9068] bridge0: port 2(bridge_slave_1) entered blocking state [ 188.257028][ T9068] bridge0: port 2(bridge_slave_1) entered forwarding state [ 188.280966][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 188.293787][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 188.317929][ T9068] bridge0: port 2(bridge_slave_1) entered blocking state [ 188.325136][ T9068] bridge0: port 2(bridge_slave_1) entered forwarding state [ 188.350805][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 188.363391][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 188.385120][ T9068] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 188.414380][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 188.423175][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 188.432999][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 188.442507][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 188.451747][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 188.460235][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 188.469513][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 188.478667][ T44] bridge0: port 1(bridge_slave_0) entered blocking state [ 188.485982][ T44] bridge0: port 1(bridge_slave_0) entered forwarding state [ 188.493747][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 188.502705][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 188.512289][ T44] bridge0: port 2(bridge_slave_1) entered blocking state [ 188.519381][ T44] bridge0: port 2(bridge_slave_1) entered forwarding state [ 188.527417][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 188.537071][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 188.559875][ T9059] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 188.571336][ T9059] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 188.599997][ T9061] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 188.611655][ T9061] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 188.626312][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 188.635607][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 188.645122][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 188.657244][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 188.666942][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 188.676289][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 188.685640][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 188.694403][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 188.703974][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 188.712643][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 188.721197][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 188.729427][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 188.737860][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 188.746577][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 188.755616][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 188.765443][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 188.773207][ T44] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 188.789144][ T9059] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 188.815468][ T9069] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 188.834151][ T9069] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 188.842880][ T9069] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 188.851850][ T9069] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 188.880360][ T9069] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 188.888458][ T9069] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 188.903422][ T9069] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 188.916385][ T9069] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 188.926405][ T9069] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 188.939541][ T9061] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 188.968287][ T9063] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 189.005017][ T9063] 8021q: adding VLAN 0 to HW filter on device batadv0 19:27:11 executing program 3: r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x3, 0x0) bind$bt_l2cap(r0, &(0x7f00000000c0)={0x1f, 0x0, {}, 0x0, 0x12}, 0xe) 19:27:11 executing program 4: r0 = socket$inet_udplite(0x2, 0x2, 0x88) ioctl(r0, 0x1000008912, &(0x7f00000000c0)="0800b5055e0bcfe87b0071") openat$sequencer(0xffffffffffffff9c, &(0x7f00000019c0)='/dev/sequencer\x00', 0x0, 0x0) [ 189.295780][ T9162] block nbd5: Receive control failed (result -22) [ 189.306841][ T9162] block nbd5: shutting down sockets [ 189.341405][ T9162] [ 189.343772][ T9162] ============================================ [ 189.349921][ T9162] WARNING: possible recursive locking detected [ 189.356075][ T9162] 5.4.0-rc4-next-20191025 #0 Not tainted [ 189.361698][ T9162] -------------------------------------------- [ 189.367941][ T9162] kworker/u5:1/9162 is trying to acquire lock: [ 189.374212][ T9162] ffff8880989b8928 ((wq_completion)knbd5-recv){+.+.}, at: flush_workqueue+0xf7/0x14c0 [ 189.383787][ T9162] [ 189.383787][ T9162] but task is already holding lock: [ 189.391206][ T9162] ffff8880989b8928 ((wq_completion)knbd5-recv){+.+.}, at: process_one_work+0x88b/0x1740 [ 189.401054][ T9162] [ 189.401054][ T9162] other info that might help us debug this: [ 189.409120][ T9162] Possible unsafe locking scenario: [ 189.409120][ T9162] [ 189.416555][ T9162] CPU0 [ 189.419817][ T9162] ---- [ 189.423100][ T9162] lock((wq_completion)knbd5-recv); [ 189.428374][ T9162] lock((wq_completion)knbd5-recv); [ 189.433808][ T9162] [ 189.433808][ T9162] *** DEADLOCK *** [ 189.433808][ T9162] [ 189.441938][ T9162] May be due to missing lock nesting notation [ 189.441938][ T9162] [ 189.450766][ T9162] 3 locks held by kworker/u5:1/9162: [ 189.456032][ T9162] #0: ffff8880989b8928 ((wq_completion)knbd5-recv){+.+.}, at: process_one_work+0x88b/0x1740 [ 189.466181][ T9162] #1: ffff88805d047dc0 ((work_completion)(&args->work)){+.+.}, at: process_one_work+0x8c1/0x1740 [ 189.477287][ T9162] #2: ffff8880a36ca578 (&nbd->config_lock){+.+.}, at: refcount_dec_and_mutex_lock+0x56/0x90 [ 189.487450][ T9162] [ 189.487450][ T9162] stack backtrace: [ 189.493424][ T9162] CPU: 0 PID: 9162 Comm: kworker/u5:1 Not tainted 5.4.0-rc4-next-20191025 #0 [ 189.502163][ T9162] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 189.513082][ T9162] Workqueue: knbd5-recv recv_work [ 189.518083][ T9162] Call Trace: [ 189.521359][ T9162] dump_stack+0x172/0x1f0 [ 189.525671][ T9162] __lock_acquire.cold+0x15d/0x385 [ 189.530778][ T9162] ? mark_held_locks+0xf0/0xf0 [ 189.535524][ T9162] lock_acquire+0x190/0x410 [ 189.540099][ T9162] ? flush_workqueue+0xf7/0x14c0 [ 189.545015][ T9162] flush_workqueue+0x126/0x14c0 [ 189.549969][ T9162] ? flush_workqueue+0xf7/0x14c0 [ 189.554898][ T9162] ? lock_downgrade+0x920/0x920 [ 189.559729][ T9162] ? drain_workqueue+0x2b/0x470 [ 189.564560][ T9162] ? debug_check_no_obj_freed+0x20a/0x43f [ 189.570956][ T9162] ? find_held_lock+0x35/0x130 [ 189.575814][ T9162] ? pwq_unbound_release_workfn+0x2f0/0x2f0 [ 189.581712][ T9162] ? mark_lock+0xc2/0x1220 [ 189.586125][ T9162] drain_workqueue+0x1b4/0x470 [ 189.590969][ T9162] ? drain_workqueue+0x1b4/0x470 [ 189.595889][ T9162] ? kfree+0x226/0x2c0 [ 189.600070][ T9162] destroy_workqueue+0x74/0x760 [ 189.604901][ T9162] ? nbd_config_put+0x378/0x870 [ 189.609734][ T9162] nbd_config_put+0x3dd/0x870 [ 189.614416][ T9162] recv_work+0x19b/0x200 [ 189.618644][ T9162] process_one_work+0x9af/0x1740 [ 189.623567][ T9162] ? pwq_dec_nr_in_flight+0x320/0x320 [ 189.629092][ T9162] ? lock_acquire+0x190/0x410 [ 189.633818][ T9162] worker_thread+0x98/0xe40 [ 189.638689][ T9162] ? trace_hardirqs_on+0x67/0x240 [ 189.643708][ T9162] kthread+0x361/0x430 [ 189.647761][ T9162] ? process_one_work+0x1740/0x1740 [ 189.652942][ T9162] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 189.658644][ T9162] ret_from_fork+0x24/0x30