[ 38.109101] audit: type=1800 audit(1538649147.074:22): pid=5724 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [ 38.128667] audit: type=1800 audit(1538649147.074:23): pid=5724 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rsyslog" dev="sda1" ino=2442 res=0 [ 38.147477] audit: type=1800 audit(1538649147.074:24): pid=5724 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="sudo" dev="sda1" ino=2454 res=0 [....] 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.56' (ECDSA) to the list of known hosts. 2018/10/04 10:34:20 parsed 1 programs 2018/10/04 10:34:22 executed programs: 0 syzkaller login: [ 153.793513] IPVS: ftp: loaded support on port[0] = 21 [ 153.826787] IPVS: ftp: loaded support on port[0] = 21 [ 153.829318] IPVS: ftp: loaded support on port[0] = 21 [ 153.840438] IPVS: ftp: loaded support on port[0] = 21 [ 153.848455] IPVS: ftp: loaded support on port[0] = 21 [ 153.861900] IPVS: ftp: loaded support on port[0] = 21 [ 154.409956] bridge0: port 1(bridge_slave_0) entered blocking state [ 154.419778] bridge0: port 1(bridge_slave_0) entered disabled state [ 154.427359] device bridge_slave_0 entered promiscuous mode [ 154.449067] bridge0: port 2(bridge_slave_1) entered blocking state [ 154.455431] bridge0: port 2(bridge_slave_1) entered disabled state [ 154.469402] device bridge_slave_1 entered promiscuous mode [ 154.475562] bridge0: port 1(bridge_slave_0) entered blocking state [ 154.482217] bridge0: port 1(bridge_slave_0) entered disabled state [ 154.489379] device bridge_slave_0 entered promiscuous mode [ 154.503797] bridge0: port 1(bridge_slave_0) entered blocking state [ 154.514906] bridge0: port 1(bridge_slave_0) entered disabled state [ 154.522316] device bridge_slave_0 entered promiscuous mode [ 154.529754] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 154.545683] bridge0: port 2(bridge_slave_1) entered blocking state [ 154.552035] bridge0: port 2(bridge_slave_1) entered disabled state [ 154.561859] device bridge_slave_1 entered promiscuous mode [ 154.572923] bridge0: port 1(bridge_slave_0) entered blocking state [ 154.580082] bridge0: port 1(bridge_slave_0) entered disabled state [ 154.587714] device bridge_slave_0 entered promiscuous mode [ 154.594849] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 154.604187] bridge0: port 2(bridge_slave_1) entered blocking state [ 154.611736] bridge0: port 2(bridge_slave_1) entered disabled state [ 154.618916] device bridge_slave_1 entered promiscuous mode [ 154.633368] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 154.643365] bridge0: port 2(bridge_slave_1) entered blocking state [ 154.650855] bridge0: port 2(bridge_slave_1) entered disabled state [ 154.657853] device bridge_slave_1 entered promiscuous mode [ 154.669927] bridge0: port 1(bridge_slave_0) entered blocking state [ 154.677349] bridge0: port 1(bridge_slave_0) entered disabled state [ 154.684144] device bridge_slave_0 entered promiscuous mode [ 154.691570] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 154.702399] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 154.709692] bridge0: port 1(bridge_slave_0) entered blocking state [ 154.717197] bridge0: port 1(bridge_slave_0) entered disabled state [ 154.724160] device bridge_slave_0 entered promiscuous mode [ 154.730598] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 154.745443] bridge0: port 2(bridge_slave_1) entered blocking state [ 154.754325] bridge0: port 2(bridge_slave_1) entered disabled state [ 154.761546] device bridge_slave_1 entered promiscuous mode [ 154.772744] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 154.781410] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 154.792820] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 154.801440] bridge0: port 2(bridge_slave_1) entered blocking state [ 154.809704] bridge0: port 2(bridge_slave_1) entered disabled state [ 154.817157] device bridge_slave_1 entered promiscuous mode [ 154.834109] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 154.850002] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 154.861531] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 154.879774] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 154.891273] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 154.900572] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 154.909473] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 154.922956] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 154.952462] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 154.980444] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 155.008310] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 155.019694] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 155.036896] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 155.048925] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 155.064335] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 155.073595] team0: Port device team_slave_0 added [ 155.085115] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 155.109442] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 155.125332] team0: Port device team_slave_1 added [ 155.156307] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 155.185142] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 155.198452] team0: Port device team_slave_0 added [ 155.205188] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 155.213174] team0: Port device team_slave_0 added [ 155.218880] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 155.230376] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 155.241440] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 155.249344] team0: Port device team_slave_1 added [ 155.255945] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 155.262915] team0: Port device team_slave_1 added [ 155.268118] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 155.276675] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 155.295271] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 155.306862] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 155.317712] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 155.328862] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 155.337065] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 155.344412] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 155.352103] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 155.359751] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 155.367582] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 155.379325] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 155.387247] team0: Port device team_slave_0 added [ 155.393659] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 155.402471] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 155.411502] team0: Port device team_slave_0 added [ 155.421383] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 155.429165] team0: Port device team_slave_0 added [ 155.434223] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 155.442729] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 155.450595] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 155.459939] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 155.467694] team0: Port device team_slave_1 added [ 155.474212] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 155.482627] team0: Port device team_slave_1 added [ 155.489289] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 155.497288] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 155.504826] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 155.512413] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 155.520122] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 155.529168] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 155.538006] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 155.545264] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 155.554276] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 155.561570] team0: Port device team_slave_1 added [ 155.568819] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 155.576373] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 155.584302] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 155.592075] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 155.599917] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 155.607295] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 155.615115] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 155.622647] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 155.630355] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 155.647816] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 155.672246] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 155.683076] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 155.696498] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 155.704934] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 155.713160] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 155.728642] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 155.738392] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 155.754568] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 155.762816] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 155.777408] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 155.786555] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 155.794491] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 155.809040] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 155.820856] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 155.836485] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 155.845164] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 155.859468] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 155.868702] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 155.876999] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 155.884691] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 155.892568] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 155.918959] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 155.938709] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 155.954304] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 156.099339] bridge0: port 2(bridge_slave_1) entered blocking state [ 156.105759] bridge0: port 2(bridge_slave_1) entered forwarding state [ 156.112420] bridge0: port 1(bridge_slave_0) entered blocking state [ 156.118825] bridge0: port 1(bridge_slave_0) entered forwarding state [ 156.128115] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 156.237125] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 156.352071] bridge0: port 2(bridge_slave_1) entered blocking state [ 156.358478] bridge0: port 2(bridge_slave_1) entered forwarding state [ 156.365113] bridge0: port 1(bridge_slave_0) entered blocking state [ 156.371504] bridge0: port 1(bridge_slave_0) entered forwarding state [ 156.381266] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 156.452198] bridge0: port 2(bridge_slave_1) entered blocking state [ 156.458601] bridge0: port 2(bridge_slave_1) entered forwarding state [ 156.465219] bridge0: port 1(bridge_slave_0) entered blocking state [ 156.471616] bridge0: port 1(bridge_slave_0) entered forwarding state [ 156.490630] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 156.500444] bridge0: port 2(bridge_slave_1) entered blocking state [ 156.506836] bridge0: port 2(bridge_slave_1) entered forwarding state [ 156.513471] bridge0: port 1(bridge_slave_0) entered blocking state [ 156.519871] bridge0: port 1(bridge_slave_0) entered forwarding state [ 156.528578] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 156.542174] bridge0: port 2(bridge_slave_1) entered blocking state [ 156.548561] bridge0: port 2(bridge_slave_1) entered forwarding state [ 156.555178] bridge0: port 1(bridge_slave_0) entered blocking state [ 156.561572] bridge0: port 1(bridge_slave_0) entered forwarding state [ 156.578767] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 156.687570] bridge0: port 2(bridge_slave_1) entered blocking state [ 156.693986] bridge0: port 2(bridge_slave_1) entered forwarding state [ 156.700629] bridge0: port 1(bridge_slave_0) entered blocking state [ 156.707005] bridge0: port 1(bridge_slave_0) entered forwarding state [ 156.719932] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 157.275818] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 157.286877] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 157.307706] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 157.314738] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 157.322374] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 158.346149] 8021q: adding VLAN 0 to HW filter on device bond0 [ 158.407064] 8021q: adding VLAN 0 to HW filter on device bond0 [ 158.547519] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 158.576343] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 158.607426] 8021q: adding VLAN 0 to HW filter on device bond0 [ 158.668588] 8021q: adding VLAN 0 to HW filter on device bond0 [ 158.728475] 8021q: adding VLAN 0 to HW filter on device bond0 [ 158.769978] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 158.779046] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 158.787676] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 158.807518] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 158.814414] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 158.826357] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 158.837571] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 158.902076] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 158.914009] 8021q: adding VLAN 0 to HW filter on device bond0 [ 158.981985] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 158.992363] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 159.006547] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 159.013484] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 159.036886] 8021q: adding VLAN 0 to HW filter on device team0 [ 159.052650] 8021q: adding VLAN 0 to HW filter on device team0 [ 159.143227] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 159.149811] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 159.158154] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 159.170673] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 159.206611] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 159.212731] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 159.226073] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 159.251523] 8021q: adding VLAN 0 to HW filter on device team0 [ 159.355463] 8021q: adding VLAN 0 to HW filter on device team0 [ 159.377973] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 159.384091] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 159.399230] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 159.416665] 8021q: adding VLAN 0 to HW filter on device team0 [ 159.625529] 8021q: adding VLAN 0 to HW filter on device team0 2018/10/04 10:34:29 executed programs: 6 2018/10/04 10:34:34 executed programs: 484 2018/10/04 10:34:39 executed programs: 991 2018/10/04 10:34:44 executed programs: 1498 2018/10/04 10:34:49 executed programs: 2017 [ 184.445711] ================================================================== [ 184.453156] BUG: KASAN: use-after-free in rawv6_sendmsg+0x4421/0x4630 [ 184.459740] Read of size 8 at addr ffff8801d49a38b0 by task syz-executor1/11366 [ 184.459744] [ 184.459757] CPU: 0 PID: 11366 Comm: syz-executor1 Not tainted 4.19.0-rc6+ #43 [ 184.459764] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 184.459769] Call Trace: [ 184.459788] dump_stack+0x1c4/0x2b4 [ 184.459815] ? dump_stack_print_info.cold.2+0x52/0x52 [ 184.459827] ? printk+0xa7/0xcf [ 184.459839] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 184.459859] print_address_description.cold.8+0x9/0x1ff [ 184.459875] kasan_report.cold.9+0x242/0x309 [ 184.459886] ? rawv6_sendmsg+0x4421/0x4630 [ 184.459907] __asan_report_load8_noabort+0x14/0x20 [ 184.505101] rawv6_sendmsg+0x4421/0x4630 [ 184.528048] ? rawv6_getsockopt+0x140/0x140 [ 184.532401] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 184.532419] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 184.532436] ? kasan_check_read+0x11/0x20 [ 184.547768] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 184.553084] ? rcu_bh_qs+0xc0/0xc0 [ 184.556619] ? unwind_dump+0x190/0x190 [ 184.556640] ? __might_fault+0x12b/0x1e0 [ 184.556654] ? lock_downgrade+0x900/0x900 [ 184.556669] ? lock_release+0x970/0x970 [ 184.572685] ? arch_local_save_flags+0x40/0x40 [ 184.577285] ? usercopy_warn+0x110/0x110 [ 184.581366] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 184.586915] ? _copy_from_user+0xdf/0x150 [ 184.591068] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 184.591083] ? rw_copy_check_uvector+0x310/0x3e0 [ 184.591100] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 184.606408] inet_sendmsg+0x1a1/0x690 [ 184.610212] ? rawv6_getsockopt+0x140/0x140 [ 184.614547] ? inet_sendmsg+0x1a1/0x690 [ 184.618526] ? ipip_gro_receive+0x100/0x100 [ 184.622852] ? smack_socket_sendmsg+0xb0/0x190 [ 184.622867] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 184.622887] ? security_socket_sendmsg+0x94/0xc0 [ 184.637755] ? ipip_gro_receive+0x100/0x100 [ 184.642098] sock_sendmsg+0xd5/0x120 [ 184.645827] ___sys_sendmsg+0x51d/0x930 [ 184.649820] ? copy_msghdr_from_user+0x580/0x580 [ 184.654760] ? ip6_datagram_send_ctl+0x14c0/0x14c0 [ 184.659716] ? _raw_spin_unlock+0x2c/0x50 [ 184.663874] ? __handle_mm_fault+0x9ab/0x53e0 [ 184.668398] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 184.668415] ? __might_fault+0x12b/0x1e0 [ 184.668439] ? ___might_sleep+0x1ed/0x300 [ 184.668458] ? arch_local_save_flags+0x40/0x40 [ 184.678043] __sys_sendmmsg+0x246/0x6d0 [ 184.678064] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 184.678095] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 184.700677] ? put_timespec64+0x10f/0x1b0 [ 184.704835] ? nsecs_to_jiffies+0x30/0x30 [ 184.709006] ? trace_hardirqs_on+0xbd/0x310 [ 184.713332] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 184.718880] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 184.724272] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 184.729726] __x64_sys_sendmmsg+0x9d/0x100 [ 184.729742] do_syscall_64+0x1b9/0x820 [ 184.729754] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 184.729784] ? syscall_return_slowpath+0x5e0/0x5e0 [ 184.748156] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 184.753012] ? trace_hardirqs_on_caller+0x310/0x310 [ 184.758041] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 184.763065] ? prepare_exit_to_usermode+0x291/0x3b0 [ 184.768092] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 184.772949] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 184.778137] RIP: 0033:0x457579 [ 184.781328] 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 [ 184.800211] RSP: 002b:00007ffde73d94d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 184.807924] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457579 [ 184.815176] RDX: 0000000000000249 RSI: 0000000020001300 RDI: 0000000000000003 [ 184.822428] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 184.829678] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001009914 [ 184.836932] R13: 00000000004c34ed R14: 00000000004d52b0 R15: 00000000ffffffff [ 184.844194] [ 184.845811] Allocated by task 11366: [ 184.849509] save_stack+0x43/0xd0 [ 184.852938] kasan_kmalloc+0xc7/0xe0 [ 184.856644] kasan_slab_alloc+0x12/0x20 [ 184.860609] kmem_cache_alloc+0x12e/0x730 [ 184.864735] dst_alloc+0xbb/0x1d0 [ 184.868167] ip6_dst_alloc+0x35/0xa0 [ 184.872422] ip6_rt_cache_alloc+0x247/0x7b0 [ 184.877507] ip6_pol_route+0x8f8/0xd90 [ 184.882255] ip6_pol_route_output+0x54/0x70 [ 184.887442] fib6_rule_lookup+0x13a/0x860 [ 184.891755] ip6_route_output_flags+0x2c5/0x350 [ 184.896407] ip6_dst_lookup_tail+0x125c/0x1d60 [ 184.900967] ip6_dst_lookup_flow+0xc8/0x270 [ 184.905274] rawv6_sendmsg+0x12d9/0x4630 [ 184.909490] inet_sendmsg+0x1a1/0x690 [ 184.914140] sock_sendmsg+0xd5/0x120 [ 184.918715] ___sys_sendmsg+0x51d/0x930 [ 184.923635] __sys_sendmmsg+0x246/0x6d0 [ 184.928543] __x64_sys_sendmmsg+0x9d/0x100 [ 184.933650] do_syscall_64+0x1b9/0x820 [ 184.938318] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 184.944525] [ 184.946391] Freed by task 11364: [ 184.950345] save_stack+0x43/0xd0 [ 184.954477] __kasan_slab_free+0x102/0x150 [ 184.959489] kasan_slab_free+0xe/0x10 [ 184.964236] kmem_cache_free+0x83/0x290 [ 184.969148] dst_destroy+0x267/0x3c0 [ 184.973649] dst_destroy_rcu+0x16/0x19 [ 184.977546] rcu_process_callbacks+0xf23/0x2670 [ 184.982195] __do_softirq+0x30b/0xad8 [ 184.985989] [ 184.987599] The buggy address belongs to the object at ffff8801d49a3800 [ 184.987599] which belongs to the cache ip6_dst_cache of size 240 [ 185.000423] The buggy address is located 176 bytes inside of [ 185.000423] 240-byte region [ffff8801d49a3800, ffff8801d49a38f0) [ 185.012291] The buggy address belongs to the page: [ 185.017205] page:ffffea00075268c0 count:1 mapcount:0 mapping:ffff8801ca98ae40 index:0xffff8801d49a31c0 [ 185.026629] flags: 0x2fffc0000000100(slab) [ 185.030850] raw: 02fffc0000000100 ffffea00074d9908 ffffea0006e62f88 ffff8801ca98ae40 [ 185.038713] raw: ffff8801d49a31c0 ffff8801d49a3080 000000010000000a 0000000000000000 [ 185.046571] page dumped because: kasan: bad access detected [ 185.052269] [ 185.053888] Memory state around the buggy address: [ 185.058803] ffff8801d49a3780: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc [ 185.066159] ffff8801d49a3800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 185.073519] >ffff8801d49a3880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 185.080853] ^ [ 185.085765] ffff8801d49a3900: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 185.093119] ffff8801d49a3980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 185.100456] ================================================================== [ 185.109850] Kernel panic - not syncing: panic_on_warn set ... [ 185.109850] [ 185.117226] CPU: 0 PID: 11366 Comm: syz-executor1 Tainted: G B 4.19.0-rc6+ #43 [ 185.125866] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 185.135203] Call Trace: [ 185.137825] dump_stack+0x1c4/0x2b4 [ 185.141442] ? dump_stack_print_info.cold.2+0x52/0x52 [ 185.146615] panic+0x238/0x4e7 [ 185.149808] ? add_taint.cold.5+0x16/0x16 [ 185.153966] ? preempt_schedule+0x4d/0x60 [ 185.158114] ? ___preempt_schedule+0x16/0x18 [ 185.162509] ? trace_hardirqs_on+0xb4/0x310 [ 185.166830] kasan_end_report+0x47/0x4f [ 185.170790] kasan_report.cold.9+0x76/0x309 [ 185.175102] ? rawv6_sendmsg+0x4421/0x4630 [ 185.179327] __asan_report_load8_noabort+0x14/0x20 [ 185.184240] rawv6_sendmsg+0x4421/0x4630 [ 185.188311] ? rawv6_getsockopt+0x140/0x140 [ 185.192616] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 185.197969] ? rcu_read_unlock_special.part.39+0x11f0/0x11f0 [ 185.203768] ? kasan_check_read+0x11/0x20 [ 185.207913] ? rcu_dynticks_curr_cpu_in_eqs+0x9f/0x160 [ 185.213206] ? rcu_bh_qs+0xc0/0xc0 [ 185.216738] ? unwind_dump+0x190/0x190 [ 185.220621] ? __might_fault+0x12b/0x1e0 [ 185.224695] ? lock_downgrade+0x900/0x900 [ 185.228837] ? lock_release+0x970/0x970 [ 185.232821] ? arch_local_save_flags+0x40/0x40 [ 185.237385] ? usercopy_warn+0x110/0x110 [ 185.241449] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 185.246971] ? _copy_from_user+0xdf/0x150 [ 185.251103] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 185.256314] ? rw_copy_check_uvector+0x310/0x3e0 [ 185.261089] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 185.266647] inet_sendmsg+0x1a1/0x690 [ 185.270445] ? rawv6_getsockopt+0x140/0x140 [ 185.274748] ? inet_sendmsg+0x1a1/0x690 [ 185.278708] ? ipip_gro_receive+0x100/0x100 [ 185.283013] ? smack_socket_sendmsg+0xb0/0x190 [ 185.287577] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 185.293121] ? security_socket_sendmsg+0x94/0xc0 [ 185.297859] ? ipip_gro_receive+0x100/0x100 [ 185.302172] sock_sendmsg+0xd5/0x120 [ 185.305871] ___sys_sendmsg+0x51d/0x930 [ 185.309832] ? copy_msghdr_from_user+0x580/0x580 [ 185.314572] ? ip6_datagram_send_ctl+0x14c0/0x14c0 [ 185.319481] ? _raw_spin_unlock+0x2c/0x50 [ 185.323612] ? __handle_mm_fault+0x9ab/0x53e0 [ 185.328119] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 185.333645] ? __might_fault+0x12b/0x1e0 [ 185.337721] ? ___might_sleep+0x1ed/0x300 [ 185.341858] ? arch_local_save_flags+0x40/0x40 [ 185.346428] __sys_sendmmsg+0x246/0x6d0 [ 185.350414] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 185.354764] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 185.360303] ? put_timespec64+0x10f/0x1b0 [ 185.364467] ? nsecs_to_jiffies+0x30/0x30 [ 185.368609] ? trace_hardirqs_on+0xbd/0x310 [ 185.372947] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 185.378481] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 185.383866] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 185.389311] __x64_sys_sendmmsg+0x9d/0x100 [ 185.393576] do_syscall_64+0x1b9/0x820 [ 185.397470] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 185.402835] ? syscall_return_slowpath+0x5e0/0x5e0 [ 185.407764] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 185.412592] ? trace_hardirqs_on_caller+0x310/0x310 [ 185.417594] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 185.422596] ? prepare_exit_to_usermode+0x291/0x3b0 [ 185.427595] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 185.432978] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 185.438151] RIP: 0033:0x457579 [ 185.441338] 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 [ 185.460227] RSP: 002b:00007ffde73d94d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 185.467951] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000457579 [ 185.475219] RDX: 0000000000000249 RSI: 0000000020001300 RDI: 0000000000000003 [ 185.482470] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 185.489740] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001009914 [ 185.496992] R13: 00000000004c34ed R14: 00000000004d52b0 R15: 00000000ffffffff [ 185.505129] Kernel Offset: disabled [ 185.508749] Rebooting in 86400 seconds..