[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 37.150164] audit: type=1800 audit(1538649145.488:25): pid=5664 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 37.176084] audit: type=1800 audit(1538649145.488:26): pid=5664 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 37.202968] audit: type=1800 audit(1538649145.488:27): pid=5664 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. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts. 2018/10/04 10:33:43 parsed 1 programs 2018/10/04 10:33:45 executed programs: 0 syzkaller login: [ 117.129913] IPVS: ftp: loaded support on port[0] = 21 [ 117.191120] IPVS: ftp: loaded support on port[0] = 21 [ 117.248713] IPVS: ftp: loaded support on port[0] = 21 [ 117.254769] IPVS: ftp: loaded support on port[0] = 21 [ 117.267750] IPVS: ftp: loaded support on port[0] = 21 [ 117.284156] IPVS: ftp: loaded support on port[0] = 21 [ 117.823724] bridge0: port 1(bridge_slave_0) entered blocking state [ 117.835855] bridge0: port 1(bridge_slave_0) entered disabled state [ 117.843294] device bridge_slave_0 entered promiscuous mode [ 117.850767] bridge0: port 1(bridge_slave_0) entered blocking state [ 117.857664] bridge0: port 1(bridge_slave_0) entered disabled state [ 117.864803] device bridge_slave_0 entered promiscuous mode [ 117.879155] bridge0: port 1(bridge_slave_0) entered blocking state [ 117.888700] bridge0: port 1(bridge_slave_0) entered disabled state [ 117.895571] device bridge_slave_0 entered promiscuous mode [ 117.908769] bridge0: port 2(bridge_slave_1) entered blocking state [ 117.918758] bridge0: port 2(bridge_slave_1) entered disabled state [ 117.925862] device bridge_slave_1 entered promiscuous mode [ 117.945614] bridge0: port 1(bridge_slave_0) entered blocking state [ 117.954694] bridge0: port 1(bridge_slave_0) entered disabled state [ 117.964648] device bridge_slave_0 entered promiscuous mode [ 117.971529] bridge0: port 2(bridge_slave_1) entered blocking state [ 117.978182] bridge0: port 2(bridge_slave_1) entered disabled state [ 117.985007] device bridge_slave_1 entered promiscuous mode [ 118.002913] bridge0: port 2(bridge_slave_1) entered blocking state [ 118.013736] bridge0: port 2(bridge_slave_1) entered disabled state [ 118.021391] device bridge_slave_1 entered promiscuous mode [ 118.028047] bridge0: port 2(bridge_slave_1) entered blocking state [ 118.034713] bridge0: port 2(bridge_slave_1) entered disabled state [ 118.042298] device bridge_slave_1 entered promiscuous mode [ 118.050542] bridge0: port 1(bridge_slave_0) entered blocking state [ 118.057646] bridge0: port 1(bridge_slave_0) entered disabled state [ 118.064472] device bridge_slave_0 entered promiscuous mode [ 118.072078] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 118.081141] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 118.092270] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 118.101444] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 118.110052] bridge0: port 1(bridge_slave_0) entered blocking state [ 118.117738] bridge0: port 1(bridge_slave_0) entered disabled state [ 118.126881] device bridge_slave_0 entered promiscuous mode [ 118.134004] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 118.143321] bridge0: port 2(bridge_slave_1) entered blocking state [ 118.150720] bridge0: port 2(bridge_slave_1) entered disabled state [ 118.158051] device bridge_slave_1 entered promiscuous mode [ 118.165594] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 118.175410] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 118.184112] bridge0: port 2(bridge_slave_1) entered blocking state [ 118.190733] bridge0: port 2(bridge_slave_1) entered disabled state [ 118.197819] device bridge_slave_1 entered promiscuous mode [ 118.204096] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 118.212692] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 118.243813] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 118.255778] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 118.292640] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 118.308951] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 118.321801] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 118.332663] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 118.349758] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 118.359908] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 118.371230] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 118.380991] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 118.412453] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 118.432233] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 118.458770] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 118.471319] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 118.510583] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 118.557454] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 118.567904] team0: Port device team_slave_0 added [ 118.580478] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 118.589652] team0: Port device team_slave_0 added [ 118.608132] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 118.615257] team0: Port device team_slave_1 added [ 118.627388] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 118.634531] team0: Port device team_slave_0 added [ 118.641232] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 118.652048] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 118.661780] team0: Port device team_slave_0 added [ 118.667457] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 118.677265] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 118.685884] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 118.693663] team0: Port device team_slave_1 added [ 118.703892] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 118.714127] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 118.723875] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 118.733933] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 118.741913] team0: Port device team_slave_1 added [ 118.754720] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 118.763570] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 118.770767] team0: Port device team_slave_1 added [ 118.776078] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 118.784894] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 118.792661] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 118.800740] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 118.809117] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 118.818179] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 118.825891] team0: Port device team_slave_0 added [ 118.833389] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 118.843657] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 118.853942] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 118.862649] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 118.871674] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 118.880504] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 118.888684] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 118.896806] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 118.910741] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 118.921561] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 118.931299] team0: Port device team_slave_1 added [ 118.938675] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 118.948806] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 118.956348] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 118.967368] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 118.974894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 118.988980] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 118.997306] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 119.004744] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 119.012947] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 119.022503] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 119.031700] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 119.043782] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 119.051893] team0: Port device team_slave_0 added [ 119.058319] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 119.068502] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 119.077089] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 119.085082] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 119.094838] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 119.118900] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 119.126340] team0: Port device team_slave_1 added [ 119.138833] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 119.148097] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 119.156012] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 119.164097] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 119.173614] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 119.187655] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 119.195526] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 119.212176] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 119.220430] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 119.228407] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 119.244875] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 119.263308] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 119.283106] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 119.295271] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 119.303495] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 119.317331] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 119.333513] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 119.341866] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 119.361831] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 119.377518] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 119.387448] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 119.400074] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 119.411441] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 119.425283] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 119.438416] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 119.457552] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 119.465520] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 119.782705] bridge0: port 2(bridge_slave_1) entered blocking state [ 119.789393] bridge0: port 2(bridge_slave_1) entered forwarding state [ 119.796059] bridge0: port 1(bridge_slave_0) entered blocking state [ 119.802650] bridge0: port 1(bridge_slave_0) entered forwarding state [ 119.815306] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 119.856108] bridge0: port 2(bridge_slave_1) entered blocking state [ 119.862541] bridge0: port 2(bridge_slave_1) entered forwarding state [ 119.869250] bridge0: port 1(bridge_slave_0) entered blocking state [ 119.875627] bridge0: port 1(bridge_slave_0) entered forwarding state [ 119.889363] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 119.898865] bridge0: port 2(bridge_slave_1) entered blocking state [ 119.905284] bridge0: port 2(bridge_slave_1) entered forwarding state [ 119.912453] bridge0: port 1(bridge_slave_0) entered blocking state [ 119.918854] bridge0: port 1(bridge_slave_0) entered forwarding state [ 119.927094] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 119.935476] bridge0: port 2(bridge_slave_1) entered blocking state [ 119.941885] bridge0: port 2(bridge_slave_1) entered forwarding state [ 119.948547] bridge0: port 1(bridge_slave_0) entered blocking state [ 119.954936] bridge0: port 1(bridge_slave_0) entered forwarding state [ 119.964284] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 120.095122] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.101590] bridge0: port 2(bridge_slave_1) entered forwarding state [ 120.108296] bridge0: port 1(bridge_slave_0) entered blocking state [ 120.114665] bridge0: port 1(bridge_slave_0) entered forwarding state [ 120.127165] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 120.137095] bridge0: port 2(bridge_slave_1) entered blocking state [ 120.143472] bridge0: port 2(bridge_slave_1) entered forwarding state [ 120.150144] bridge0: port 1(bridge_slave_0) entered blocking state [ 120.156528] bridge0: port 1(bridge_slave_0) entered forwarding state [ 120.164502] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 120.666739] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 120.677392] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 120.690321] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 120.698156] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 120.705331] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 120.713010] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 121.970079] 8021q: adding VLAN 0 to HW filter on device bond0 [ 122.030148] 8021q: adding VLAN 0 to HW filter on device bond0 [ 122.088932] 8021q: adding VLAN 0 to HW filter on device bond0 [ 122.147611] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 122.161365] 8021q: adding VLAN 0 to HW filter on device bond0 [ 122.234816] 8021q: adding VLAN 0 to HW filter on device bond0 [ 122.243875] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 122.298024] 8021q: adding VLAN 0 to HW filter on device bond0 [ 122.320565] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 122.353826] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 122.376085] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 122.384921] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 122.398892] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 122.415290] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 122.499240] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 122.509536] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 122.527757] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 122.538799] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 122.551032] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 122.558322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 122.575938] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 122.590336] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 122.607708] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 122.614718] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 122.640056] 8021q: adding VLAN 0 to HW filter on device team0 [ 122.695083] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 122.701349] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 122.709459] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 122.725828] 8021q: adding VLAN 0 to HW filter on device team0 [ 122.778741] 8021q: adding VLAN 0 to HW filter on device team0 [ 122.789948] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 122.796332] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 122.806275] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 122.826608] 8021q: adding VLAN 0 to HW filter on device team0 [ 122.922638] 8021q: adding VLAN 0 to HW filter on device team0 [ 122.988417] 8021q: adding VLAN 0 to HW filter on device team0 2018/10/04 10:33:52 executed programs: 6 [ 128.397636] ================================================================== [ 128.405169] BUG: KASAN: use-after-free in rawv6_sendmsg+0x4421/0x4630 [ 128.411806] Read of size 8 at addr ffff8801d3ecc5b0 by task syz-executor2/8121 [ 128.419177] [ 128.419193] CPU: 1 PID: 8121 Comm: syz-executor2 Not tainted 4.19.0-rc6+ #266 [ 128.419230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 128.419236] Call Trace: [ 128.419257] dump_stack+0x1c4/0x2b4 [ 128.419275] ? dump_stack_print_info.cold.2+0x52/0x52 [ 128.419286] ? printk+0xa7/0xcf [ 128.419299] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 128.419318] print_address_description.cold.8+0x9/0x1ff [ 128.419332] kasan_report.cold.9+0x242/0x309 [ 128.419345] ? rawv6_sendmsg+0x4421/0x4630 [ 128.419361] __asan_report_load8_noabort+0x14/0x20 [ 128.419372] rawv6_sendmsg+0x4421/0x4630 [ 128.419393] ? rawv6_getsockopt+0x140/0x140 [ 128.419413] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 128.428439] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 128.428454] ? kasan_check_read+0x11/0x20 [ 128.428468] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 128.428482] ? rcu_bh_qs+0xc0/0xc0 [ 128.428500] ? unwind_dump+0x190/0x190 [ 128.484696] ? __might_fault+0x12b/0x1e0 [ 128.495883] ? lock_downgrade+0x900/0x900 [ 128.509133] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 128.517184] ? aa_label_sk_perm+0x46d/0x8e0 [ 128.517232] ? aa_profile_af_perm+0x410/0x410 [ 128.517258] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 128.517270] ? _copy_from_user+0xdf/0x150 [ 128.517297] ? aa_af_perm+0x5a0/0x5a0 [ 128.549351] inet_sendmsg+0x1a1/0x690 [ 128.553177] ? rawv6_getsockopt+0x140/0x140 [ 128.557558] ? inet_sendmsg+0x1a1/0x690 [ 128.557575] ? ipip_gro_receive+0x100/0x100 [ 128.557591] ? apparmor_socket_sendmsg+0x29/0x30 [ 128.557607] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 128.557627] ? security_socket_sendmsg+0x94/0xc0 [ 128.581028] ? ipip_gro_receive+0x100/0x100 [ 128.585373] sock_sendmsg+0xd5/0x120 [ 128.589284] ___sys_sendmsg+0x51d/0x930 [ 128.593295] ? copy_msghdr_from_user+0x580/0x580 [ 128.598081] ? ip6_datagram_send_ctl+0x14c0/0x14c0 [ 128.598103] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 128.598121] ? __might_fault+0x12b/0x1e0 [ 128.598152] ? ___might_sleep+0x1ed/0x300 [ 128.617181] ? arch_local_save_flags+0x40/0x40 [ 128.617236] __sys_sendmmsg+0x246/0x6d0 [ 128.617257] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 128.617283] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 128.635724] ? put_timespec64+0x10f/0x1b0 [ 128.639904] ? nsecs_to_jiffies+0x30/0x30 [ 128.644081] ? trace_hardirqs_on+0xbd/0x310 [ 128.648431] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 128.653996] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 128.659514] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 128.659534] __x64_sys_sendmmsg+0x9d/0x100 [ 128.659551] do_syscall_64+0x1b9/0x820 [ 128.659565] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 128.659580] ? syscall_return_slowpath+0x5e0/0x5e0 [ 128.659592] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 128.659606] ? trace_hardirqs_on_caller+0x310/0x310 [ 128.659625] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 128.698474] ? prepare_exit_to_usermode+0x291/0x3b0 [ 128.703527] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 128.708390] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 128.713580] RIP: 0033:0x457579 [ 128.716774] Code: 1d b4 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 128.735676] RSP: 002b:00007ffda4a59668 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 128.743387] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457579 [ 128.750653] RDX: 0000000000000249 RSI: 0000000020001300 RDI: 0000000000000003 [ 128.757920] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 128.765320] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000024e8914 [ 128.772711] R13: 00000000004c34ed R14: 00000000004d52b0 R15: 00000000ffffffff [ 128.779992] [ 128.781614] Allocated by task 8121: [ 128.785328] save_stack+0x43/0xd0 [ 128.788780] kasan_kmalloc+0xc7/0xe0 [ 128.792510] kasan_slab_alloc+0x12/0x20 [ 128.796496] kmem_cache_alloc+0x12e/0x730 [ 128.800799] dst_alloc+0xbb/0x1d0 [ 128.804261] ip6_dst_alloc+0x35/0xa0 [ 128.807971] ip6_rt_cache_alloc+0x247/0x7b0 [ 128.812291] ip6_pol_route+0x8f8/0xd90 [ 128.816176] ip6_pol_route_output+0x54/0x70 [ 128.820648] fib6_rule_lookup+0x13a/0x860 [ 128.824803] ip6_route_output_flags+0x2c5/0x350 [ 128.829529] ip6_dst_lookup_tail+0x125c/0x1d60 [ 128.834107] ip6_dst_lookup_flow+0xc8/0x270 [ 128.838506] rawv6_sendmsg+0x12d9/0x4630 [ 128.842566] inet_sendmsg+0x1a1/0x690 [ 128.846364] sock_sendmsg+0xd5/0x120 [ 128.850074] ___sys_sendmsg+0x51d/0x930 [ 128.854108] __sys_sendmmsg+0x246/0x6d0 [ 128.858082] __x64_sys_sendmmsg+0x9d/0x100 [ 128.862404] do_syscall_64+0x1b9/0x820 [ 128.866292] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 128.871473] [ 128.873094] Freed by task 18: [ 128.876195] save_stack+0x43/0xd0 [ 128.879702] __kasan_slab_free+0x102/0x150 [ 128.883936] kasan_slab_free+0xe/0x10 [ 128.887740] kmem_cache_free+0x83/0x290 [ 128.891785] dst_destroy+0x267/0x3c0 [ 128.895495] dst_destroy_rcu+0x16/0x19 [ 128.899382] rcu_process_callbacks+0xf23/0x2670 [ 128.904047] __do_softirq+0x30b/0xad8 [ 128.907895] [ 128.909609] The buggy address belongs to the object at ffff8801d3ecc500 [ 128.909609] which belongs to the cache ip6_dst_cache of size 240 [ 128.922771] The buggy address is located 176 bytes inside of [ 128.922771] 240-byte region [ffff8801d3ecc500, ffff8801d3ecc5f0) [ 128.934638] The buggy address belongs to the page: [ 128.939564] page:ffffea00074fb300 count:1 mapcount:0 mapping:ffff8801cb5a0980 index:0x0 [ 128.950457] flags: 0x2fffc0000000100(slab) [ 128.954694] raw: 02fffc0000000100 ffffea0006f02688 ffffea00070abac8 ffff8801cb5a0980 [ 128.962926] raw: 0000000000000000 ffff8801d3ecc000 000000010000000c 0000000000000000 [ 128.970869] page dumped because: kasan: bad access detected [ 128.976588] [ 128.978247] Memory state around the buggy address: [ 128.983175] ffff8801d3ecc480: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 128.990536] ffff8801d3ecc500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 128.997895] >ffff8801d3ecc580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 129.005259] ^ [ 129.010186] ffff8801d3ecc600: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 129.017578] ffff8801d3ecc680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 129.025047] ================================================================== [ 129.033470] Kernel panic - not syncing: panic_on_warn set ... [ 129.033470] [ 129.035015] kobject: 'loop5' (00000000564fe67d): kobject_uevent_env 2018/10/04 10:33:57 executed programs: 481 [ 129.040878] CPU: 1 PID: 8121 Comm: syz-executor2 Tainted: G B 4.19.0-rc6+ #266 [ 129.040885] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 129.040889] Call Trace: [ 129.040912] dump_stack+0x1c4/0x2b4 [ 129.040928] ? dump_stack_print_info.cold.2+0x52/0x52 [ 129.040950] panic+0x238/0x4e7 [ 129.063264] kobject: 'loop5' (00000000564fe67d): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 129.065420] ? add_taint.cold.5+0x16/0x16 [ 129.065438] ? preempt_schedule+0x4d/0x60 [ 129.065459] ? ___preempt_schedule+0x16/0x18 [ 129.096499] kobject: 'loop0' (00000000ff26cd81): kobject_uevent_env [ 129.097869] ? trace_hardirqs_on+0xb4/0x310 [ 129.102325] kobject: 'loop0' (00000000ff26cd81): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 129.108733] kasan_end_report+0x47/0x4f [ 129.108747] kasan_report.cold.9+0x76/0x309 [ 129.108759] ? rawv6_sendmsg+0x4421/0x4630 [ 129.108774] __asan_report_load8_noabort+0x14/0x20 [ 129.108785] rawv6_sendmsg+0x4421/0x4630 [ 129.108812] ? rawv6_getsockopt+0x140/0x140 [ 129.148678] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 129.154054] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 129.159864] ? kasan_check_read+0x11/0x20 [ 129.164018] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 129.169302] ? rcu_bh_qs+0xc0/0xc0 [ 129.172849] ? unwind_dump+0x190/0x190 [ 129.176746] ? __might_fault+0x12b/0x1e0 [ 129.180879] ? lock_downgrade+0x900/0x900 [ 129.185041] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 129.190583] ? aa_label_sk_perm+0x46d/0x8e0 [ 129.194909] ? aa_profile_af_perm+0x410/0x410 [ 129.199416] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 129.204955] ? _copy_from_user+0xdf/0x150 [ 129.209113] ? aa_af_perm+0x5a0/0x5a0 [ 129.212925] inet_sendmsg+0x1a1/0x690 [ 129.216739] ? rawv6_getsockopt+0x140/0x140 [ 129.221119] ? inet_sendmsg+0x1a1/0x690 [ 129.225267] ? ipip_gro_receive+0x100/0x100 [ 129.229595] ? apparmor_socket_sendmsg+0x29/0x30 [ 129.234356] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 129.239899] ? security_socket_sendmsg+0x94/0xc0 [ 129.244880] ? ipip_gro_receive+0x100/0x100 [ 129.249233] sock_sendmsg+0xd5/0x120 [ 129.252951] ___sys_sendmsg+0x51d/0x930 [ 129.257040] ? copy_msghdr_from_user+0x580/0x580 [ 129.261854] ? ip6_datagram_send_ctl+0x14c0/0x14c0 [ 129.266790] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 129.272331] ? __might_fault+0x12b/0x1e0 [ 129.276401] ? ___might_sleep+0x1ed/0x300 [ 129.280569] ? arch_local_save_flags+0x40/0x40 [ 129.285330] __sys_sendmmsg+0x246/0x6d0 [ 129.289382] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 129.293721] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 129.299342] ? put_timespec64+0x10f/0x1b0 [ 129.303514] ? nsecs_to_jiffies+0x30/0x30 [ 129.307673] ? trace_hardirqs_on+0xbd/0x310 [ 129.312110] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 129.317685] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 129.323053] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 129.328517] __x64_sys_sendmmsg+0x9d/0x100 [ 129.332760] do_syscall_64+0x1b9/0x820 [ 129.336651] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 129.342017] ? syscall_return_slowpath+0x5e0/0x5e0 [ 129.346946] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 129.351788] ? trace_hardirqs_on_caller+0x310/0x310 [ 129.356887] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 129.361907] ? prepare_exit_to_usermode+0x291/0x3b0 [ 129.366928] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 129.371774] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 129.376961] RIP: 0033:0x457579 [ 129.380154] Code: 1d b4 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 129.399057] RSP: 002b:00007ffda4a59668 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 129.406766] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457579 [ 129.414040] RDX: 0000000000000249 RSI: 0000000020001300 RDI: 0000000000000003 [ 129.421313] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 129.428584] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000024e8914 [ 129.435968] R13: 00000000004c34ed R14: 00000000004d52b0 R15: 00000000ffffffff [ 129.444701] Kernel Offset: disabled [ 129.448354] Rebooting in 86400 seconds..