[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 29.311568] kauditd_printk_skb: 7 callbacks suppressed [ 29.311581] audit: type=1800 audit(1543828162.442:29): pid=5873 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 29.344677] audit: type=1800 audit(1543828162.442:30): pid=5873 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.22' (ECDSA) to the list of known hosts. 2018/12/03 09:09:50 parsed 1 programs 2018/12/03 09:09:52 executed programs: 0 syzkaller login: [ 59.693876] IPVS: ftp: loaded support on port[0] = 21 [ 59.697747] IPVS: ftp: loaded support on port[0] = 21 [ 59.701172] IPVS: ftp: loaded support on port[0] = 21 [ 59.709623] IPVS: ftp: loaded support on port[0] = 21 [ 59.735744] IPVS: ftp: loaded support on port[0] = 21 [ 59.737057] IPVS: ftp: loaded support on port[0] = 21 [ 60.563800] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.573215] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.580390] device bridge_slave_0 entered promiscuous mode [ 60.589006] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.595351] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.602437] device bridge_slave_0 entered promiscuous mode [ 60.611111] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.620145] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.629570] device bridge_slave_0 entered promiscuous mode [ 60.642872] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.654300] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.661532] device bridge_slave_0 entered promiscuous mode [ 60.669368] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.675702] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.683052] device bridge_slave_0 entered promiscuous mode [ 60.691127] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.698226] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.705254] device bridge_slave_1 entered promiscuous mode [ 60.713395] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.720050] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.727139] device bridge_slave_1 entered promiscuous mode [ 60.733536] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.743633] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.751620] device bridge_slave_1 entered promiscuous mode [ 60.760418] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.767268] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.774671] device bridge_slave_1 entered promiscuous mode [ 60.784366] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.791757] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.799492] device bridge_slave_1 entered promiscuous mode [ 60.807770] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 60.820095] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.832626] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.840845] device bridge_slave_0 entered promiscuous mode [ 60.849454] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 60.861954] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 60.872811] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 60.885077] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 60.902172] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 60.916392] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 60.930620] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.941557] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.951410] device bridge_slave_1 entered promiscuous mode [ 60.962619] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 60.978036] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 60.994435] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 61.039803] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 61.129790] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 61.173546] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 61.195988] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 61.222090] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 61.234793] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 61.262676] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 61.274770] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 61.297117] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 61.307954] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 61.355413] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 61.374639] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 61.385821] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 61.397530] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 61.407999] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.422645] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.441163] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 61.451209] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 61.463770] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 61.475164] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.487037] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.497290] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 61.506389] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 61.514335] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 61.527068] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 61.533980] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.548301] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.568388] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.576354] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.595923] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 61.606082] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 61.619662] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 61.637338] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.645333] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.732028] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 61.743463] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.782744] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 61.793955] team0: Port device team_slave_0 added [ 61.818535] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 61.836648] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.847076] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 61.854416] team0: Port device team_slave_0 added [ 61.871689] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 61.881582] team0: Port device team_slave_0 added [ 61.890763] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 61.900312] team0: Port device team_slave_1 added [ 61.907003] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 61.914311] team0: Port device team_slave_0 added [ 61.938476] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 61.956805] team0: Port device team_slave_1 added [ 61.962764] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 61.975537] team0: Port device team_slave_0 added [ 61.990171] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 61.998560] team0: Port device team_slave_1 added [ 62.009464] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 62.018934] team0: Port device team_slave_1 added [ 62.045433] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.068393] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.079509] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 62.087697] team0: Port device team_slave_1 added [ 62.114444] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.125971] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.149165] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.161010] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.177149] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.185427] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 62.194836] team0: Port device team_slave_0 added [ 62.203094] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 62.215408] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.231863] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.241761] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.250025] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 62.269332] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 62.286911] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.301644] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.317307] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.324981] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.332718] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.340574] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.348718] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 62.356058] team0: Port device team_slave_1 added [ 62.362345] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 62.377196] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 62.384655] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.399709] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.414417] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.422758] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.430927] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 62.441649] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 62.454598] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 62.462921] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.475173] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.489547] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.498827] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.507076] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 62.514806] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.523013] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 62.539454] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 62.552536] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 62.574058] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 62.583781] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.601811] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.611043] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.619823] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.627733] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.635401] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 62.643295] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.651251] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.696503] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 62.703639] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.716985] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 62.793441] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 62.810811] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.824560] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.333800] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.340358] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.347400] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.353758] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.365715] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 63.401867] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 63.414301] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.420705] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.427385] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.433748] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.442352] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 63.455894] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.462332] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.469054] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.475422] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.489556] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 63.501233] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.507701] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.514368] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.520790] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.531854] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 63.542472] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.548888] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.555572] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.562008] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.574929] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 63.635814] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.642290] bridge0: port 2(bridge_slave_1) entered forwarding state [ 63.649058] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.655424] bridge0: port 1(bridge_slave_0) entered forwarding state [ 63.669526] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 64.456299] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.463646] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.485893] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.494008] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 64.501240] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 66.375083] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.453544] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.472163] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.501422] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.549606] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.574545] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.711215] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.724129] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.744912] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.784169] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.820021] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.838129] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.981775] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 66.992903] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 67.011898] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.021644] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.029488] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.037097] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.058127] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 67.067804] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.075363] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.098537] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 67.115422] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 67.127890] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 67.137823] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.150318] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.176801] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.183938] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.191066] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 67.198344] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.344029] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.383555] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.394975] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.405566] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.418149] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.429858] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.930186] audit: type=1804 audit(1543828202.062:31): pid=7574 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor3" name="/root/syzkaller-testdir626330613/syzkaller.V4s1wI/0/bus" dev="sda1" ino=16515 res=1 2018/12/03 09:10:02 executed programs: 6 [ 69.001371] syz-executor3 (7574) used greatest stack depth: 10424 bytes left [ 69.007017] audit: type=1804 audit(1543828202.102:32): pid=7580 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor0" name="/root/syzkaller-testdir015105419/syzkaller.xf7MME/0/bus" dev="sda1" ino=16520 res=1 [ 69.017084] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 69.141507] audit: type=1804 audit(1543828202.112:33): pid=7584 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor3" name="/root/syzkaller-testdir626330613/syzkaller.V4s1wI/0/bus" dev="sda1" ino=16515 res=1 [ 69.177528] File: /root/syzkaller-testdir015105419/syzkaller.xf7MME/0/bus PID: 7580 Comm: syz-executor0 [ 69.189126] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 69.243450] File: /root/syzkaller-testdir352976860/syzkaller.xKN8zG/0/bus PID: 7598 Comm: syz-executor1 [ 69.247159] audit: type=1804 audit(1543828202.112:34): pid=7584 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor3" name="/root/syzkaller-testdir626330613/syzkaller.V4s1wI/0/bus" dev="sda1" ino=16515 res=1 [ 69.255322] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 69.279269] audit: type=1804 audit(1543828202.132:35): pid=7574 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor3" name="/root/syzkaller-testdir626330613/syzkaller.V4s1wI/0/bus" dev="sda1" ino=16515 res=1 [ 69.307786] File: /root/syzkaller-testdir626330613/syzkaller.V4s1wI/1/bus PID: 7601 Comm: syz-executor3 [ 69.313412] audit: type=1804 audit(1543828202.132:36): pid=7589 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor0" name="/root/syzkaller-testdir015105419/syzkaller.xf7MME/0/bus" dev="sda1" ino=16520 res=1 [ 69.345993] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 69.350395] audit: type=1804 audit(1543828202.132:37): pid=7580 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor0" name="/root/syzkaller-testdir015105419/syzkaller.xf7MME/0/bus" dev="sda1" ino=16520 res=1 [ 69.370245] File: /root/syzkaller-testdir015105419/syzkaller.xf7MME/1/bus PID: 7618 Comm: syz-executor0 [ 69.395164] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 69.418593] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 69.420447] File: /root/syzkaller-testdir831448942/syzkaller.yu0hkI/0/bus PID: 7606 Comm: syz-executor2 [ 69.440780] syz-executor5 (7619) used greatest stack depth: 10304 bytes left [ 69.446709] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 69.458329] audit: type=1804 audit(1543828202.132:38): pid=7580 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor0" name="/root/syzkaller-testdir015105419/syzkaller.xf7MME/0/bus" dev="sda1" ino=16520 res=1 [ 69.468088] File: /root/syzkaller-testdir795946192/syzkaller.rW5ieL/1/bus PID: 7614 Comm: syz-executor5 [ 69.492466] File: /root/syzkaller-testdir352976860/syzkaller.xKN8zG/1/bus PID: 7621 Comm: syz-executor1 [ 69.505392] audit: type=1804 audit(1543828202.132:39): pid=7588 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor5" name="/root/syzkaller-testdir795946192/syzkaller.rW5ieL/0/bus" dev="sda1" ino=16524 res=1 [ 69.538461] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 69.540354] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 69.565127] Page cache invalidation failure on direct I/O. Possible data corruption due to collision with buffered I/O! [ 69.580028] File: /root/syzkaller-testdir015105419/syzkaller.xf7MME/1/bus PID: 7612 Comm: syz-executor0 [ 69.588486] File: /root/syzkaller-testdir492378607/syzkaller.2eRmOL/1/bus PID: 7624 Comm: syz-executor4 [ 69.619364] audit: type=1804 audit(1543828202.242:40): pid=7599 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor5" name="/root/syzkaller-testdir795946192/syzkaller.rW5ieL/0/bus" dev="sda1" ino=16524 res=1 [ 69.661607] File: /root/syzkaller-testdir626330613/syzkaller.V4s1wI/2/bus PID: 7630 Comm: syz-executor3 [ 69.778122] syz-executor2 (7653) used greatest stack depth: 10248 bytes left [ 70.283029] syz-executor5 (7751) used greatest stack depth: 9944 bytes left [ 70.332571] syz-executor2 (7764) used greatest stack depth: 9320 bytes left [ 72.557051] syz-executor3 (8177) used greatest stack depth: 8320 bytes left [ 73.296508] WARNING: CPU: 0 PID: 8324 at fs/ext4/inode.c:3928 ext4_set_page_dirty+0x58c/0x780 [ 73.305312] Kernel panic - not syncing: panic_on_warn set ... [ 73.311185] CPU: 0 PID: 8324 Comm: syz-executor5 Not tainted 4.20.0-rc4+ #360 [ 73.318630] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.327992] Call Trace: [ 73.330567] dump_stack+0x244/0x39d [ 73.334182] ? dump_stack_print_info.cold.1+0x20/0x20 [ 73.339364] panic+0x2ad/0x55c [ 73.342556] ? add_taint.cold.5+0x16/0x16 [ 73.346723] ? __warn.cold.8+0x5/0x45 [ 73.350525] ? __warn+0xe8/0x1d0 [ 73.353882] ? ext4_set_page_dirty+0x58c/0x780 [ 73.358450] __warn.cold.8+0x20/0x45 [ 73.362199] ? rcu_softirq_qs+0x20/0x20 [ 73.366200] ? ext4_set_page_dirty+0x58c/0x780 [ 73.370833] report_bug+0x254/0x2d0 [ 73.374525] do_error_trap+0x11b/0x200 [ 73.378402] do_invalid_op+0x36/0x40 [ 73.382119] ? ext4_set_page_dirty+0x58c/0x780 [ 73.386690] invalid_op+0x14/0x20 [ 73.390153] RIP: 0010:ext4_set_page_dirty+0x58c/0x780 [ 73.395365] Code: 8b 85 b0 fe ff ff 4c 8d 70 ff e9 9f fc ff ff e8 fa 2a 67 ff 48 c7 c6 a0 63 3a 88 48 89 df e8 4b 52 98 ff 0f 0b e8 e4 2a 67 ff <0f> 0b e9 b3 fe ff ff e8 d8 2a 67 ff 4d 8d 75 c0 48 b8 00 00 00 00 [ 73.414267] RSP: 0018:ffff8881b3bee130 EFLAGS: 00010293 [ 73.419647] RAX: ffff8881c00ea380 RBX: ffffea0006a26200 RCX: ffffffff82186f8d [ 73.426914] RDX: 0000000000000000 RSI: ffffffff821870dc RDI: 0000000000000007 [ 73.434167] RBP: ffff8881b3bee288 R08: ffff8881c00ea380 R09: 0000000000000007 [ 73.441417] R10: 0000000000000000 R11: ffff8881c00ea380 R12: 1ffff1103677dc28 [ 73.448713] R13: 0000000000000000 R14: 0000000000000001 R15: ffffea0006a26208 [ 73.456010] ? ext4_set_page_dirty+0x43d/0x780 [ 73.460580] ? ext4_set_page_dirty+0x58c/0x780 [ 73.465167] ? ext4_readpages+0x120/0x120 [ 73.469340] ? print_usage_bug+0xc0/0xc0 [ 73.473389] ? find_held_lock+0x36/0x1c0 [ 73.477458] ? mark_held_locks+0xc7/0x130 [ 73.481602] ? _raw_spin_unlock_irq+0x27/0x80 [ 73.486087] ? _raw_spin_unlock_irq+0x27/0x80 [ 73.490578] ? ext4_readpages+0x120/0x120 [ 73.494931] set_page_dirty+0x632/0x1030 [ 73.499015] ? __writepage+0xe0/0xe0 [ 73.502717] ? compat_start_thread+0x80/0x80 [ 73.507139] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 73.512674] ? zap_class+0x640/0x640 [ 73.516392] ? mark_held_locks+0x130/0x130 [ 73.520629] ? __switch_to_asm+0x34/0x70 [ 73.524695] ? preempt_notifier_register+0x200/0x200 [ 73.529790] ? __switch_to_asm+0x34/0x70 [ 73.533864] ? __switch_to_asm+0x34/0x70 [ 73.537946] ? __switch_to_asm+0x40/0x70 [ 73.541991] ? __switch_to_asm+0x34/0x70 [ 73.546036] ? __switch_to_asm+0x40/0x70 [ 73.550101] ? __switch_to_asm+0x34/0x70 [ 73.554156] ? __switch_to_asm+0x40/0x70 [ 73.558204] ? __switch_to_asm+0x34/0x70 [ 73.562254] ? __lock_is_held+0xb5/0x140 [ 73.566308] ? perf_trace_sched_process_exec+0x860/0x860 [ 73.571941] ? blk_flush_plug_list+0x72d/0x990 [ 73.576513] ? __might_sleep+0x95/0x190 [ 73.580504] set_page_dirty_lock+0x116/0x190 [ 73.584924] ? tag_pages_for_writeback+0x7d0/0x7d0 [ 73.589898] dio_bio_complete+0x5ad/0x890 [ 73.594097] ? dio_bio_end_io+0x180/0x180 [ 73.598260] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 73.602832] ? trace_hardirqs_on+0xbd/0x310 [ 73.607150] ? kasan_check_read+0x11/0x20 [ 73.611292] ? do_blockdev_direct_IO+0x3db8/0x9db0 [ 73.616228] ? trace_hardirqs_off_caller+0x310/0x310 [ 73.621344] do_blockdev_direct_IO+0x3dcb/0x9db0 [ 73.626109] ? do_direct_IO+0xc110/0xc110 [ 73.630263] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 73.635287] ? find_held_lock+0x36/0x1c0 [ 73.639374] ? check_preemption_disabled+0x48/0x280 [ 73.644408] ? ext4_dio_get_block_unwritten_sync+0xf0/0xf0 [ 73.650069] ? find_get_pages_range_tag+0xebc/0x15d0 [ 73.655177] ? check_preemption_disabled+0x48/0x280 [ 73.660200] ? replace_page_cache_page+0x17e0/0x17e0 [ 73.665300] ? __lock_acquire+0x62f/0x4c20 [ 73.669520] ? print_usage_bug+0xc0/0xc0 [ 73.673587] ? ext4_mark_inode_dirty+0xb20/0xb20 [ 73.678397] ? __lock_acquire+0x62f/0x4c20 [ 73.682692] ? mark_held_locks+0x130/0x130 [ 73.686925] ? zap_class+0x640/0x640 [ 73.690632] ? __lock_acquire+0x62f/0x4c20 [ 73.694854] ? find_held_lock+0x36/0x1c0 [ 73.698941] ? pagevec_lookup_range_tag+0x40/0x80 [ 73.703800] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 73.709334] ? __filemap_fdatawait_range+0x58a/0x8b0 [ 73.714442] ? kasan_check_read+0x11/0x20 [ 73.718578] ? wait_on_page_bit+0x50/0x50 [ 73.722710] ? __lock_is_held+0xb5/0x140 [ 73.726798] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 73.731852] ? wbc_detach_inode+0x69e/0x940 [ 73.736198] ? wbc_attach_and_unlock_inode+0xa30/0xa30 [ 73.741517] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 73.747059] ? __filemap_fdatawrite_range+0x2ab/0x4a0 [ 73.752258] ? ext4_dio_get_block_unwritten_sync+0xf0/0xf0 [ 73.757906] __blockdev_direct_IO+0x9d/0xc6 [ 73.762245] ext4_direct_IO+0x1156/0x2230 [ 73.766402] ? ext4_iomap_end+0x810/0x810 [ 73.770562] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 73.776120] ? do_writepages+0x15c/0x1a0 [ 73.780196] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 73.785723] ? atime_needs_update+0x507/0x710 [ 73.790203] ? new_inode+0x40/0x40 [ 73.793735] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 73.799273] ? touch_atime+0x103/0x320 [ 73.803179] ? atime_needs_update+0x710/0x710 [ 73.807716] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 73.813263] ? filemap_check_errors+0xd8/0x110 [ 73.817834] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 73.823371] generic_file_read_iter+0x4d7/0x2d70 [ 73.828124] ? filemap_write_and_wait_range+0xd0/0xd0 [ 73.833315] ? do_raw_spin_unlock+0xa7/0x330 [ 73.837727] ? do_raw_spin_trylock+0x270/0x270 [ 73.842317] ? lock_acquire+0x1ed/0x520 [ 73.846319] ? __might_sleep+0x95/0x190 [ 73.850311] ? __lock_acquire+0x62f/0x4c20 [ 73.854536] ? refill_pi_state_cache.part.8+0x310/0x310 [ 73.859898] ? mark_held_locks+0x130/0x130 [ 73.864158] ? __lock_acquire+0x62f/0x4c20 [ 73.868388] ? futex_wake+0x760/0x760 [ 73.872190] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 73.877393] ? mark_held_locks+0x130/0x130 [ 73.881637] ? print_usage_bug+0xc0/0xc0 [ 73.885726] ? print_usage_bug+0xc0/0xc0 [ 73.889789] ? futex_wait_setup+0x3e0/0x3e0 [ 73.894134] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 73.899315] ? drop_futex_key_refs.isra.14+0x6d/0xe0 [ 73.904410] ? zap_class+0x640/0x640 [ 73.908129] ? futex_wake+0x304/0x760 [ 73.911920] ? find_held_lock+0x36/0x1c0 [ 73.915967] ? aa_file_perm+0x469/0x1060 [ 73.920024] ? lock_downgrade+0x900/0x900 [ 73.924170] ? check_preemption_disabled+0x48/0x280 [ 73.929186] ? rcu_read_unlock_special+0x1c0/0x1c0 [ 73.934117] ? kasan_check_read+0x11/0x20 [ 73.938264] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 73.943541] ? rcu_softirq_qs+0x20/0x20 [ 73.947545] ? aa_file_perm+0x490/0x1060 [ 73.951618] ? kasan_check_read+0x11/0x20 [ 73.955762] ? aa_path_link+0x5e0/0x5e0 [ 73.959740] ? __fget+0x4d1/0x740 [ 73.963177] ? ksys_dup3+0x680/0x680 [ 73.966926] ext4_file_read_iter+0x18b/0x3c0 [ 73.971368] __vfs_read+0x6ac/0x9b0 [ 73.974993] ? vfs_copy_file_range+0xb90/0xb90 [ 73.979598] ? fsnotify+0xef0/0xef0 [ 73.983295] ? rw_verify_area+0x118/0x360 [ 73.987493] vfs_read+0x17f/0x3c0 [ 73.990973] ksys_pread64+0x181/0x1b0 [ 73.994780] ? __ia32_sys_write+0xb0/0xb0 [ 73.998956] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 74.004543] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 74.009919] ? trace_hardirqs_off_caller+0x310/0x310 [ 74.015025] __x64_sys_pread64+0x97/0xf0 [ 74.019083] do_syscall_64+0x1b9/0x820 [ 74.022966] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 74.028327] ? syscall_return_slowpath+0x5e0/0x5e0 [ 74.033249] ? trace_hardirqs_on_caller+0x310/0x310 [ 74.038262] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 74.043277] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 74.049932] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 74.054804] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 74.059983] RIP: 0033:0x457569 [ 74.063202] Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 74.082085] RSP: 002b:00007f02d9f6ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 [ 74.089774] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457569 [ 74.097031] RDX: 0000000000001000 RSI: 0000000020002000 RDI: 0000000000000007 [ 74.104288] RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 [ 74.111554] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f02d9f6b6d4 [ 74.118815] R13: 00000000004c37d2 R14: 00000000004d5b60 R15: 00000000ffffffff [ 74.127244] Kernel Offset: disabled [ 74.130925] Rebooting in 86400 seconds..