[ 41.610493][ T23] audit: type=1800 audit(1575408104.634:25): pid=7902 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 41.629478][ T23] audit: type=1800 audit(1575408104.634:26): pid=7902 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 41.687240][ T23] audit: type=1800 audit(1575408104.634:27): pid=7902 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 41.710512][ T23] audit: type=1800 audit(1575408104.634:28): pid=7902 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.253' (ECDSA) to the list of known hosts. 2019/12/03 21:21:55 fuzzer started 2019/12/03 21:21:57 dialing manager at 10.128.0.26:42111 2019/12/03 21:21:57 syscalls: 2689 2019/12/03 21:21:57 code coverage: enabled 2019/12/03 21:21:57 comparison tracing: enabled 2019/12/03 21:21:57 extra coverage: extra coverage is not supported by the kernel 2019/12/03 21:21:57 setuid sandbox: enabled 2019/12/03 21:21:57 namespace sandbox: enabled 2019/12/03 21:21:57 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 21:21:57 fault injection: enabled 2019/12/03 21:21:57 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 21:21:57 net packet injection: enabled 2019/12/03 21:21:57 net device setup: enabled 2019/12/03 21:21:57 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 21:21:57 devlink PCI setup: PCI device 0000:00:10.0 is not available 21:21:58 executing program 0: r0 = socket$vsock_stream(0x28, 0x1, 0x0) connect$vsock_stream(r0, &(0x7f0000000000)={0x28, 0x0, 0x0, @host}, 0x10) close(r0) 21:21:58 executing program 1: creat(&(0x7f0000000000)='./bus\x00', 0x0) mount(&(0x7f0000000180)=ANY=[@ANYBLOB='ubi'], &(0x7f0000000100)='./bus\x00', &(0x7f0000000140)='ubifs\x00', 0x8804, 0x0) syzkaller login: [ 55.240671][ T8068] IPVS: ftp: loaded support on port[0] = 21 21:21:58 executing program 2: connect$netrom(0xffffffffffffffff, &(0x7f0000000000)={{0x6, @rose={0xbb, 0xbb, 0xbb, 0x2}}, [@rose, @rose, @default, @netrom, @netrom, @rose, @rose, @rose={0xbb, 0xbb, 0xbb, 0x1, 0x0}]}, 0x48) r0 = socket$inet6_sctp(0xa, 0x5, 0x84) r1 = socket$inet(0x2, 0x80001, 0x84) getsockopt$inet_sctp_SCTP_MAX_BURST(r1, 0x84, 0x14, &(0x7f0000000000)=@assoc_value={0x0}, &(0x7f0000000040)=0x8) setsockopt$inet_sctp6_SCTP_DEFAULT_SNDINFO(r0, 0x84, 0x22, &(0x7f0000000380)={0x0, 0x0, 0x0, 0x0, r2}, 0x10) [ 55.398388][ T8068] chnl_net:caif_netlink_parms(): no params data found [ 55.430995][ T8070] IPVS: ftp: loaded support on port[0] = 21 [ 55.479486][ T8068] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.488436][ T8068] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.497685][ T8068] device bridge_slave_0 entered promiscuous mode [ 55.530470][ T8068] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.538224][ T8068] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.565347][ T8068] device bridge_slave_1 entered promiscuous mode [ 55.614545][ T8068] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 55.636329][ T8068] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 21:21:58 executing program 3: perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) accept$packet(0xffffffffffffffff, 0x0, &(0x7f0000000000)) fcntl$getownex(0xffffffffffffffff, 0x10, &(0x7f0000000080)) open(&(0x7f0000000140)='./bus\x00', 0x0, 0x0) accept$packet(0xffffffffffffffff, 0x0, 0x0) sched_setscheduler(0x0, 0x0, &(0x7f0000000380)) bpf$BPF_TASK_FD_QUERY(0x14, &(0x7f0000000400)={0x0, 0xffffffffffffffff, 0x0, 0x1, &(0x7f00000003c0)='\x00'}, 0x30) socket$inet(0x2, 0xa, 0x0) r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000000)={0x26, 'aead\x00', 0x0, 0x0, 'aegis128-generic\x00'}, 0x58) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f0000000180)="71e67a15cdf0311cfcf33a52a7d86bd1", 0x10) r1 = accept4$alg(r0, 0x0, 0x0, 0x0) sendmsg$alg(r1, &(0x7f0000000440)={0x0, 0x0, 0x0, 0x0, &(0x7f0000000400)=[@op={0x18, 0x117, 0x3, 0x1}], 0x18}, 0x0) io_setup(0x20000000001005, &(0x7f0000000880)=0x0) io_submit(r2, 0x1, &(0x7f0000001440)=[&(0x7f0000000200)={0x5000000, 0x0, 0x700000000000000, 0x0, 0x0, r1, &(0x7f0000000340), 0xfdef}]) setsockopt$ALG_SET_KEY(0xffffffffffffffff, 0x117, 0x1, 0x0, 0x0) sendmmsg(r1, &(0x7f0000000e80)=[{{&(0x7f0000000240)=@pppol2tpv3={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @broadcast}, 0x1, 0x4, 0x4, 0x3}}, 0x80, &(0x7f0000000100)=[{&(0x7f0000000480)="573a454a62851f7ac1139370826b86695746f430ee25f3e0a0e9ebe8dd310494c112fa6084c58b107f56b9f6c1f8d76993f5b67bae172c3de83e46f968c26df37430610eba4cf0003ca4f17ba8d50478ae4bb17e56638e7dbeb12d3cbd74aa33", 0x60}], 0x1, &(0x7f0000000540)=ANY=[@ANYBLOB="100000000000000000000000000000001800000000000000990100000010e0fb4645be000000000010000000000000001e0200000000000030000000000000000000000005000000e4d30400000000000000ada838008de71fe1d5248564b75dc4812fede814d2ec38000000000000000000000002000000b2f1f650695fe44bb53927b0b5d7fd5ce0d74ac73c241bbe8acd8e03e8700501aaa26472dae856aa"], 0xa0}}], 0x1, 0x8044) [ 55.695496][ T8070] chnl_net:caif_netlink_parms(): no params data found [ 55.706446][ T8073] IPVS: ftp: loaded support on port[0] = 21 [ 55.723379][ T8068] team0: Port device team_slave_0 added [ 55.750253][ T8068] team0: Port device team_slave_1 added [ 55.827394][ T8070] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.844158][ T8070] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.863041][ T8070] device bridge_slave_0 entered promiscuous mode 21:21:58 executing program 4: mkdir(&(0x7f00000001c0)='./file1\x00', 0x0) mkdir(&(0x7f0000000180)='./bus\x00', 0x0) mkdir(&(0x7f0000000280)='./file0\x00', 0x0) mount$overlay(0x400000, &(0x7f0000000000)='./bus\x00', &(0x7f0000000080)='overlay\x00', 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB='lowerdir=./bus,workdir=./file1,upperdir=./file0']) chdir(&(0x7f00000002c0)='./bus\x00') open(&(0x7f0000000000)='./bus\x00', 0x141042, 0x0) [ 55.965723][ T8068] device hsr_slave_0 entered promiscuous mode [ 56.015736][ T8068] device hsr_slave_1 entered promiscuous mode [ 56.057616][ T8070] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.073057][ T8070] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.080901][ T8070] device bridge_slave_1 entered promiscuous mode [ 56.126270][ T8070] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.161641][ T8070] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link 21:21:59 executing program 5: syz_mount_image$vfat(&(0x7f0000000540)='vfat\x00', &(0x7f00000002c0)='./file0\x00', 0x800000000e004, 0x1, &(0x7f0000000580)=[{&(0x7f0000010000)="eb3c906d6b66732e666174000204010002000270fff8", 0x16}], 0x0, 0x0) chdir(&(0x7f0000000180)='./file0\x00') open(&(0x7f0000000000)='./bus\x00', 0x141042, 0x0) socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = open(&(0x7f0000000000)='./bus\x00', 0x0, 0x0) dup2(r0, r1) [ 56.211730][ T8079] IPVS: ftp: loaded support on port[0] = 21 [ 56.231197][ T8077] IPVS: ftp: loaded support on port[0] = 21 [ 56.257523][ T8070] team0: Port device team_slave_0 added [ 56.316614][ T8070] team0: Port device team_slave_1 added [ 56.322731][ T8068] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.376682][ T8068] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 56.435131][ T8068] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 56.503553][ T8068] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 56.624779][ T8070] device hsr_slave_0 entered promiscuous mode [ 56.683323][ T8070] device hsr_slave_1 entered promiscuous mode [ 56.733209][ T8070] debugfs: Directory 'hsr0' with parent '/' already present! [ 56.741637][ T8073] chnl_net:caif_netlink_parms(): no params data found [ 56.752640][ T8082] IPVS: ftp: loaded support on port[0] = 21 [ 56.800780][ T8073] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.809638][ T8073] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.817272][ T8073] device bridge_slave_0 entered promiscuous mode [ 56.832682][ T8073] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.839953][ T8073] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.847593][ T8073] device bridge_slave_1 entered promiscuous mode [ 56.887134][ T8073] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.925579][ T8073] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.958219][ T8070] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 57.006573][ T8070] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 57.069556][ T8070] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 57.148738][ T8073] team0: Port device team_slave_0 added [ 57.156637][ T8070] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 57.206184][ T8079] chnl_net:caif_netlink_parms(): no params data found [ 57.221114][ T8073] team0: Port device team_slave_1 added [ 57.265689][ T8073] device hsr_slave_0 entered promiscuous mode [ 57.293287][ T8073] device hsr_slave_1 entered promiscuous mode [ 57.343081][ T8073] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.350790][ T8077] chnl_net:caif_netlink_parms(): no params data found [ 57.385944][ T8077] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.393284][ T8077] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.400798][ T8077] device bridge_slave_0 entered promiscuous mode [ 57.409800][ T8077] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.416950][ T8077] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.424843][ T8077] device bridge_slave_1 entered promiscuous mode [ 57.483724][ T8077] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.502273][ T8077] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.522223][ T8082] chnl_net:caif_netlink_parms(): no params data found [ 57.536971][ T8079] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.545885][ T8079] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.554684][ T8079] device bridge_slave_0 entered promiscuous mode [ 57.562692][ T8079] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.570796][ T8079] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.579555][ T8079] device bridge_slave_1 entered promiscuous mode [ 57.601266][ T8068] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.652553][ T8079] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.669184][ T8077] team0: Port device team_slave_0 added [ 57.692725][ T8079] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.703117][ T8073] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 57.729427][ T8068] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.740453][ T8077] team0: Port device team_slave_1 added [ 57.756020][ T8082] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.764389][ T8082] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.771904][ T8082] device bridge_slave_0 entered promiscuous mode [ 57.787026][ T8083] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 57.795213][ T8083] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.803069][ T8083] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 57.812197][ T8083] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.820735][ T8083] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.827911][ T8083] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.836065][ T8073] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 57.886433][ T8070] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.944831][ T8077] device hsr_slave_0 entered promiscuous mode [ 57.983318][ T8077] device hsr_slave_1 entered promiscuous mode [ 58.033129][ T8077] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.045379][ T8082] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.052444][ T8082] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.060490][ T8082] device bridge_slave_1 entered promiscuous mode [ 58.068171][ T8083] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.076698][ T8083] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.085229][ T8083] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.093760][ T8083] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.100792][ T8083] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.109314][ T8083] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 58.117749][ T8083] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 58.126581][ T8073] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.185187][ T8073] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 58.240005][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 58.247738][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 58.262185][ T8079] team0: Port device team_slave_0 added [ 58.276378][ T8079] team0: Port device team_slave_1 added [ 58.290926][ T8070] 8021q: adding VLAN 0 to HW filter on device team0 [ 58.308046][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 58.316994][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 58.332809][ T8082] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.351237][ T8082] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.376897][ T8082] team0: Port device team_slave_0 added [ 58.389244][ T8077] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 58.444620][ T8077] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 58.485342][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 58.493535][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 58.502373][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 58.510688][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 58.519285][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 58.527962][ T3031] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.535062][ T3031] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.544885][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 58.605414][ T8079] device hsr_slave_0 entered promiscuous mode [ 58.663395][ T8079] device hsr_slave_1 entered promiscuous mode [ 58.723359][ T8079] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.735448][ T8082] team0: Port device team_slave_1 added [ 58.741527][ T8077] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 58.794818][ T8077] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 58.847751][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 58.856760][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 58.865976][ T3031] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.873065][ T3031] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.945095][ T8082] device hsr_slave_0 entered promiscuous mode [ 58.993343][ T8082] device hsr_slave_1 entered promiscuous mode [ 59.043082][ T8082] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.054531][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.062856][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.074298][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.082544][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.092129][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.103615][ T8068] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.144071][ T8079] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 59.191917][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.203176][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.211975][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.222742][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.231395][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.240962][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.250147][ T8079] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 59.305119][ T8079] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 59.346025][ T8079] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 59.412206][ T8082] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 59.455733][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.464039][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.472108][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.479810][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 59.492466][ T8068] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 59.509789][ T8070] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 59.521849][ T8070] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.529709][ T8082] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 59.574463][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.582823][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.612072][ T8082] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 59.650852][ T8082] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 59.745147][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 59.752562][ T3031] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 164.762935][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 164.769711][ C0] rcu: 0-...!: (10499 ticks this GP) idle=a0e/1/0x4000000000000002 softirq=10209/10209 fqs=0 [ 164.780181][ C0] (t=10501 jiffies g=6077 q=40) [ 164.785106][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g6077 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 164.796363][ C0] rcu: RCU grace-period kthread stack dump: [ 164.802237][ C0] rcu_preempt I29032 10 2 0x80004000 [ 164.808563][ C0] Call Trace: [ 164.811853][ C0] __schedule+0x9a0/0xcc0 [ 164.816178][ C0] schedule+0x181/0x210 [ 164.820319][ C0] schedule_timeout+0x14f/0x240 [ 164.825154][ C0] ? run_local_timers+0x120/0x120 [ 164.830172][ C0] rcu_gp_kthread+0xed8/0x1770 [ 164.834932][ C0] kthread+0x332/0x350 [ 164.838981][ C0] ? rcu_report_qs_rsp+0x140/0x140 [ 164.844075][ C0] ? kthread_blkcg+0xe0/0xe0 [ 164.848653][ C0] ret_from_fork+0x24/0x30 [ 164.853099][ C0] NMI backtrace for cpu 0 [ 164.857416][ C0] CPU: 0 PID: 8090 Comm: blkid Not tainted 5.4.0-syzkaller #0 [ 164.864848][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 164.874907][ C0] Call Trace: [ 164.878177][ C0] [ 164.881017][ C0] dump_stack+0x1fb/0x318 [ 164.885338][ C0] nmi_cpu_backtrace+0xaf/0x1a0 [ 164.890173][ C0] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 164.896315][ C0] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 164.902364][ C0] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 164.908335][ C0] arch_trigger_cpumask_backtrace+0x10/0x20 [ 164.914216][ C0] rcu_dump_cpu_stacks+0x15a/0x220 [ 164.919889][ C0] rcu_sched_clock_irq+0xe25/0x1ad0 [ 164.925078][ C0] ? trace_hardirqs_off+0x74/0x80 [ 164.930099][ C0] update_process_times+0x12d/0x180 [ 164.935287][ C0] tick_sched_timer+0x263/0x420 [ 164.940124][ C0] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 164.945655][ C0] __hrtimer_run_queues+0x403/0x840 [ 164.950853][ C0] hrtimer_interrupt+0x38c/0xda0 [ 164.955790][ C0] ? debug_smp_processor_id+0x9/0x20 [ 164.961064][ C0] smp_apic_timer_interrupt+0x109/0x280 [ 164.966597][ C0] apic_timer_interrupt+0xf/0x20 [ 164.971514][ C0] [ 164.974441][ C0] RIP: 0010:__memcg_kmem_uncharge+0x219/0x2e0 [ 164.980494][ C0] Code: 4b 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> c3 49 8d 5f 10 48 89 df be 08 00 00 00 e8 04 c1 fa ff 48 8b 45 [ 165.000082][ C0] RSP: 0018:ffffc900020075e8 EFLAGS: 00000296 ORIG_RAX: ffffffffffffff13 [ 165.008479][ C0] RAX: 0000000000000001 RBX: ffffea0002314b00 RCX: 0000000000000000 [ 165.016434][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0002314b00 [ 165.024389][ C0] RBP: ffffc900020075e8 R08: dffffc0000000000 R09: fffffbfff12877ed [ 165.032343][ C0] R10: fffffbfff12877ed R11: 0000000000000000 R12: ffff888094f84120 [ 165.040299][ C0] R13: dffffc0000000000 R14: 1ffff110129f0824 R15: ffff88809f18b468 [ 165.048302][ C0] free_thread_stack+0x12e/0x590 [ 165.053248][ C0] put_task_stack+0xa3/0x130 [ 165.057841][ C0] finish_task_switch+0x3f1/0x550 [ 165.062882][ C0] __schedule+0x9a8/0xcc0 [ 165.067222][ C0] preempt_schedule_irq+0xc1/0x140 [ 165.072334][ C0] retint_kernel+0x1b/0x2b [ 165.076740][ C0] RIP: 0010:lock_is_held_type+0x60/0x2b0 [ 165.082363][ C0] Code: c1 ef 03 43 8a 04 37 84 c0 0f 85 60 01 00 00 41 83 7d 00 00 0f 85 79 01 00 00 48 c7 c0 20 96 0a 89 48 c1 e8 03 42 80 3c 30 00 <74> 0c 48 c7 c7 20 96 0a 89 e8 c2 56 56 00 48 83 3d da d9 ae 07 00 [ 165.101956][ C0] RSP: 0018:ffffc90002007840 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff02 [ 165.110358][ C0] RAX: 1ffffffff12152c4 RBX: ffff88809859e4c0 RCX: 0000000000000000 [ 165.118315][ C0] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff890d4be0 [ 165.126271][ C0] RBP: ffffc90002007890 R08: ffffffff81e34cb2 R09: 0000000000000000 [ 165.134234][ C0] R10: fffffbfff12877ed R11: 0000000000000000 R12: 0000000000000000 [ 165.142192][ C0] R13: ffff88809859ed54 R14: dffffc0000000000 R15: 1ffff110130b3daa [ 165.150181][ C0] ? kernfs_iop_permission+0x62/0xa0 [ 165.155465][ C0] ___might_sleep+0x3e/0x5e0 [ 165.160045][ C0] __might_sleep+0x8f/0x100 [ 165.164541][ C0] __mutex_lock_common+0x4f/0x2e10 [ 165.169634][ C0] ? kernfs_iop_permission+0x62/0xa0 [ 165.174906][ C0] ? rcu_lock_release+0x9/0x30 [ 165.179671][ C0] mutex_lock_nested+0x1b/0x30 [ 165.184418][ C0] kernfs_iop_permission+0x62/0xa0 [ 165.189514][ C0] ? kernfs_evict_inode+0x60/0x60 [ 165.194520][ C0] inode_permission+0x276/0x520 [ 165.199358][ C0] link_path_walk+0x200/0x1410 [ 165.204110][ C0] ? read_seqcount_begin+0x18e/0x210 [ 165.209943][ C0] path_lookupat+0x69/0xb30 [ 165.214445][ C0] ? do_raw_spin_unlock+0x136/0x260 [ 165.219641][ C0] ? check_preemption_disabled+0x44/0x260 [ 165.225357][ C0] filename_lookup+0x1d4/0x690 [ 165.230118][ C0] ? strncpy_from_user+0x361/0x3f0 [ 165.235241][ C0] user_path_at_empty+0x40/0x50 [ 165.240078][ C0] vfs_statx+0xbb/0x190 [ 165.244227][ C0] __x64_sys_newfstatat+0xbd/0x120 [ 165.249326][ C0] ? prepare_exit_to_usermode+0x221/0x5b0 [ 165.255029][ C0] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 165.260733][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 165.266173][ C0] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 165.271898][ C0] ? do_syscall_64+0x1d/0x1c0 [ 165.276569][ C0] do_syscall_64+0xf7/0x1c0 [ 165.281059][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 165.287022][ C0] RIP: 0033:0x7f790e52fe1a [ 165.291426][ C0] Code: 83 c8 ff c3 90 90 90 90 90 90 90 90 90 90 90 90 83 ff 01 89 f0 48 89 d6 77 1e 48 63 f8 4d 63 d0 48 89 ca b8 06 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 1a f3 c3 0f 1f 40 00 48 8b 05 e9 4f 2b 00 64 [ 165.311013][ C0] RSP: 002b:00007ffe302b8218 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 [ 165.319409][ C0] RAX: ffffffffffffffda RBX: 00007ffe302b82f0 RCX: 00007f790e52fe1a [ 165.327367][ C0] RDX: 00007ffe302b8250 RSI: 00007f790e806e96 RDI: 0000000000000004 [ 165.335343][ C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001 [ 165.343311][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f790e806e96 [ 165.351268][ C0] R13: 00007ffe302b8250 R14: 00007f790ea11820 R15: 00007f790e8072a2