[ 36.103637] audit: type=1800 audit(1538941910.410:30): pid=5651 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 40.711423] kauditd_printk_skb: 4 callbacks suppressed [ 40.711435] audit: type=1400 audit(1538941915.040:35): avc: denied { map } for pid=5827 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.10.8' (ECDSA) to the list of known hosts. [ 61.239384] audit: type=1400 audit(1538941935.570:36): avc: denied { map } for pid=5839 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/10/07 19:52:16 parsed 1 programs [ 61.734956] audit: type=1400 audit(1538941936.060:37): avc: denied { map } for pid=5839 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=68 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2018/10/07 19:52:17 executed programs: 0 [ 63.689148] IPVS: ftp: loaded support on port[0] = 21 [ 63.697078] IPVS: ftp: loaded support on port[0] = 21 [ 63.705665] IPVS: ftp: loaded support on port[0] = 21 [ 63.708479] IPVS: ftp: loaded support on port[0] = 21 [ 63.721014] IPVS: ftp: loaded support on port[0] = 21 [ 63.733108] IPVS: ftp: loaded support on port[0] = 21 [ 64.445530] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.459357] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.466494] device bridge_slave_0 entered promiscuous mode [ 64.474894] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.481874] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.488759] device bridge_slave_0 entered promiscuous mode [ 64.496518] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.503304] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.510399] device bridge_slave_0 entered promiscuous mode [ 64.518598] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.524926] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.532012] device bridge_slave_0 entered promiscuous mode [ 64.540068] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.546404] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.555983] device bridge_slave_0 entered promiscuous mode [ 64.564898] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.571855] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.579201] device bridge_slave_1 entered promiscuous mode [ 64.590700] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.597037] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.604391] device bridge_slave_1 entered promiscuous mode [ 64.613515] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.621516] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.628968] device bridge_slave_1 entered promiscuous mode [ 64.636069] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.642819] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.650054] device bridge_slave_1 entered promiscuous mode [ 64.656839] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.664171] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.673708] device bridge_slave_1 entered promiscuous mode [ 64.680023] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 64.689264] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 64.696435] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 64.704346] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.716758] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.727451] device bridge_slave_0 entered promiscuous mode [ 64.737440] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 64.746509] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 64.759467] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 64.766634] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 64.780557] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 64.800255] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.807617] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.815859] device bridge_slave_1 entered promiscuous mode [ 64.823528] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 64.845490] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 64.869305] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 64.922609] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 64.935517] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 64.944121] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 64.964714] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 64.980881] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 64.999475] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 65.010361] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 65.033978] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 65.070776] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 65.081370] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 65.126944] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 65.137393] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 65.191598] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 65.209300] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 65.217384] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 65.247750] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.260501] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.287483] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 65.301385] team0: Port device team_slave_0 added [ 65.306550] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 65.321107] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 65.331974] team0: Port device team_slave_0 added [ 65.339116] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 65.346198] team0: Port device team_slave_0 added [ 65.355846] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 65.369013] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 65.377875] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 65.384929] team0: Port device team_slave_1 added [ 65.395201] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 65.404362] team0: Port device team_slave_1 added [ 65.410312] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 65.423693] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 65.431054] team0: Port device team_slave_0 added [ 65.441221] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 65.449749] team0: Port device team_slave_1 added [ 65.456527] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 65.467392] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 65.490618] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.501196] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.508696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.516284] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.528888] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 65.535936] team0: Port device team_slave_0 added [ 65.543357] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 65.558856] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 65.574208] team0: Port device team_slave_1 added [ 65.580029] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.587463] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.596806] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 65.604720] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.618875] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 65.632270] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 65.648814] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.658512] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.670817] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.682064] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.689633] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.697232] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.705703] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 65.712731] team0: Port device team_slave_1 added [ 65.719799] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 65.728969] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 65.738645] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.755714] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.763510] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.771362] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.779715] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.788763] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 65.795719] team0: Port device team_slave_0 added [ 65.802528] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 65.816563] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 65.828455] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 65.840631] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.849810] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.859048] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 65.866494] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.882628] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.890492] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.898223] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.908468] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 65.915444] team0: Port device team_slave_1 added [ 65.932823] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 65.949101] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 65.966450] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 65.974113] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 65.984213] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 65.998328] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.007534] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.019568] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 66.047436] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 66.064335] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.076269] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 66.094262] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.150500] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 66.162603] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.171870] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 66.194187] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 66.210211] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.218852] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 66.376005] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.382412] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.389051] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.395396] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.403769] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 66.411907] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.418285] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.424892] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.431273] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.439155] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 66.500817] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.507188] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.513814] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.520207] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.532869] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 66.607202] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.613581] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.620167] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.626480] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.634054] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 66.640928] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.647264] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.653841] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.660184] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.668212] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 66.859695] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.866186] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.872807] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.879167] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.889515] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 67.218259] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 67.225346] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 67.237463] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 67.244890] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 67.252343] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 67.259525] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 68.298602] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.317366] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.356260] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.430003] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 68.452818] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.517054] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 68.531459] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 68.576905] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 68.591299] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 68.599844] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.637768] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.646850] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 68.664729] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.737160] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 68.743752] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 68.751630] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.765245] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 68.776509] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 68.783949] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.806327] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.844812] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 68.851900] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 68.859173] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.872535] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 68.889934] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 68.952609] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.965232] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.061714] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 69.068242] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 69.075135] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.084723] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 69.099358] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.108400] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 69.115174] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.234225] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.258843] 8021q: adding VLAN 0 to HW filter on device team0 2018/10/07 19:52:24 executed programs: 6 [ 69.962394] hrtimer: interrupt took 23850 ns 2018/10/07 19:52:29 executed programs: 252 2018/10/07 19:52:34 executed programs: 513 [ 84.581011] ================================================================== [ 84.588409] BUG: KASAN: use-after-free in do_raw_spin_lock+0x1c0/0x200 [ 84.595055] Read of size 4 at addr ffff8801a7fee43c by task syz-executor1/11174 [ 84.602478] [ 84.604096] CPU: 0 PID: 11174 Comm: syz-executor1 Not tainted 4.19.0-rc6+ #51 [ 84.611343] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.620695] Call Trace: [ 84.623267] dump_stack+0x1c4/0x2b4 [ 84.626877] ? dump_stack_print_info.cold.2+0x52/0x52 [ 84.632052] ? printk+0xa7/0xcf [ 84.635310] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 84.640051] print_address_description.cold.8+0x9/0x1ff [ 84.645476] kasan_report.cold.9+0x242/0x309 [ 84.649877] ? do_raw_spin_lock+0x1c0/0x200 [ 84.654184] __asan_report_load4_noabort+0x14/0x20 [ 84.659095] do_raw_spin_lock+0x1c0/0x200 [ 84.663226] _raw_spin_lock_bh+0x39/0x40 [ 84.667269] ? vhost_transport_send_pkt+0x12e/0x380 [ 84.672264] vhost_transport_send_pkt+0x12e/0x380 [ 84.677105] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.682622] ? vhost_vsock_dev_open+0x5a0/0x5a0 [ 84.687270] ? virtio_transport_send_pkt_info+0x2e7/0x460 [ 84.692805] ? __local_bh_enable_ip+0x160/0x260 [ 84.697458] virtio_transport_send_pkt_info+0x31d/0x460 [ 84.702805] virtio_transport_connect+0x17c/0x220 [ 84.707627] ? virtio_transport_send_pkt_info+0x460/0x460 [ 84.713157] ? vsock_auto_bind+0xa9/0xe0 [ 84.717208] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 84.722731] vsock_stream_connect+0x4ed/0xe40 [ 84.727206] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.732726] ? vsock_dgram_connect+0x500/0x500 [ 84.737290] ? __local_bh_enable_ip+0x160/0x260 [ 84.741940] ? _raw_spin_unlock_bh+0x30/0x40 [ 84.746333] ? finish_wait+0x430/0x430 [ 84.750203] ? __release_sock+0x3a0/0x3a0 [ 84.754334] ? __local_bh_enable_ip+0x160/0x260 [ 84.758990] ? selinux_netlbl_socket_connect+0xa0/0xc0 [ 84.764254] ? selinux_socket_connect+0x6c/0x80 [ 84.768905] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.774425] ? security_socket_connect+0x94/0xc0 [ 84.779162] __sys_connect+0x37d/0x4c0 [ 84.783032] ? __ia32_sys_accept+0xb0/0xb0 [ 84.787243] ? kasan_check_read+0x11/0x20 [ 84.791369] ? _copy_to_user+0xc8/0x110 [ 84.795324] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 84.800842] ? put_timespec64+0x10f/0x1b0 [ 84.804975] ? trace_hardirqs_on+0xbd/0x310 [ 84.809286] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.814800] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.820166] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 84.825599] __x64_sys_connect+0x73/0xb0 [ 84.829641] do_syscall_64+0x1b9/0x820 [ 84.833506] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 84.838855] ? syscall_return_slowpath+0x5e0/0x5e0 [ 84.843765] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 84.848590] ? trace_hardirqs_on_caller+0x310/0x310 [ 84.853602] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 84.858601] ? prepare_exit_to_usermode+0x291/0x3b0 [ 84.863602] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 84.868425] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.873591] RIP: 0033:0x457579 [ 84.876763] 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 [ 84.895646] RSP: 002b:00007f771bebec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 84.903825] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457579 [ 84.911076] RDX: 0000000000000010 RSI: 0000000020000200 RDI: 000000000000000a [ 84.918326] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 84.925573] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f771bebf6d4 [ 84.932829] R13: 00000000004bdb1a R14: 00000000004cc658 R15: 00000000ffffffff [ 84.940082] [ 84.941691] Allocated by task 11174: [ 84.945390] save_stack+0x43/0xd0 [ 84.948825] kasan_kmalloc+0xc7/0xe0 [ 84.952527] __kmalloc_node+0x47/0x70 [ 84.956308] kvmalloc_node+0xb9/0xf0 [ 84.959998] vhost_vsock_dev_open+0xa2/0x5a0 [ 84.964389] misc_open+0x3ca/0x560 [ 84.967911] chrdev_open+0x25a/0x710 [ 84.971607] do_dentry_open+0x499/0x1250 [ 84.975648] vfs_open+0xa0/0xd0 [ 84.978911] path_openat+0x12bf/0x5160 [ 84.982778] do_filp_open+0x255/0x380 [ 84.986559] do_sys_open+0x568/0x700 [ 84.990256] __x64_sys_openat+0x9d/0x100 [ 84.994302] do_syscall_64+0x1b9/0x820 [ 84.998176] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.003340] [ 85.004947] Freed by task 11172: [ 85.008294] save_stack+0x43/0xd0 [ 85.011725] __kasan_slab_free+0x102/0x150 [ 85.015937] kasan_slab_free+0xe/0x10 [ 85.019718] kfree+0xcf/0x230 [ 85.022807] kvfree+0x61/0x70 [ 85.025895] vhost_vsock_dev_release+0x4f4/0x720 [ 85.030628] __fput+0x385/0xa30 [ 85.033887] ____fput+0x15/0x20 [ 85.037147] task_work_run+0x1e8/0x2a0 [ 85.041030] exit_to_usermode_loop+0x318/0x380 [ 85.045595] do_syscall_64+0x6be/0x820 [ 85.049467] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.054631] [ 85.056263] The buggy address belongs to the object at ffff8801a7fe5740 [ 85.056263] which belongs to the cache kmalloc-65536 of size 65536 [ 85.069467] The buggy address is located 36092 bytes inside of [ 85.069467] 65536-byte region [ffff8801a7fe5740, ffff8801a7ff5740) [ 85.081671] The buggy address belongs to the page: [ 85.086582] page:ffffea00069ff800 count:1 mapcount:0 mapping:ffff8801da802500 index:0x0 compound_mapcount: 0 [ 85.096539] flags: 0x2fffc0000008100(slab|head) [ 85.101191] raw: 02fffc0000008100 ffffea00069fb808 ffffea00069ea008 ffff8801da802500 [ 85.109050] raw: 0000000000000000 ffff8801a7fe5740 0000000100000001 0000000000000000 [ 85.116905] page dumped because: kasan: bad access detected [ 85.122587] [ 85.124210] Memory state around the buggy address: [ 85.129120] ffff8801a7fee300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 85.136467] ffff8801a7fee380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 85.143809] >ffff8801a7fee400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 85.151151] ^ [ 85.156319] ffff8801a7fee480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 85.163664] ffff8801a7fee500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 85.171000] ================================================================== 2018/10/07 19:52:39 executed programs: 744 [ 85.178458] Kernel panic - not syncing: panic_on_warn set ... [ 85.178458] [ 85.185823] CPU: 0 PID: 11174 Comm: syz-executor1 Tainted: G B 4.19.0-rc6+ #51 [ 85.194497] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.203841] Call Trace: [ 85.206431] dump_stack+0x1c4/0x2b4 [ 85.210071] ? dump_stack_print_info.cold.2+0x52/0x52 [ 85.215267] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 85.220028] panic+0x238/0x4e7 [ 85.223227] ? add_taint.cold.5+0x16/0x16 [ 85.227375] ? trace_hardirqs_on+0xb4/0x310 [ 85.231702] kasan_end_report+0x47/0x4f [ 85.235670] kasan_report.cold.9+0x76/0x309 [ 85.239991] ? do_raw_spin_lock+0x1c0/0x200 [ 85.244314] __asan_report_load4_noabort+0x14/0x20 [ 85.249249] do_raw_spin_lock+0x1c0/0x200 [ 85.253396] _raw_spin_lock_bh+0x39/0x40 [ 85.257472] ? vhost_transport_send_pkt+0x12e/0x380 [ 85.262498] vhost_transport_send_pkt+0x12e/0x380 [ 85.267330] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.272848] ? vhost_vsock_dev_open+0x5a0/0x5a0 [ 85.277499] ? virtio_transport_send_pkt_info+0x2e7/0x460 [ 85.283020] ? __local_bh_enable_ip+0x160/0x260 [ 85.287675] virtio_transport_send_pkt_info+0x31d/0x460 [ 85.293032] virtio_transport_connect+0x17c/0x220 [ 85.297869] ? virtio_transport_send_pkt_info+0x460/0x460 [ 85.303407] ? vsock_auto_bind+0xa9/0xe0 [ 85.307492] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 85.313044] vsock_stream_connect+0x4ed/0xe40 [ 85.317543] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.323087] ? vsock_dgram_connect+0x500/0x500 [ 85.327672] ? __local_bh_enable_ip+0x160/0x260 [ 85.332363] ? _raw_spin_unlock_bh+0x30/0x40 [ 85.336775] ? finish_wait+0x430/0x430 [ 85.340667] ? __release_sock+0x3a0/0x3a0 [ 85.344816] ? __local_bh_enable_ip+0x160/0x260 [ 85.349497] ? selinux_netlbl_socket_connect+0xa0/0xc0 [ 85.354770] ? selinux_socket_connect+0x6c/0x80 [ 85.359427] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.364954] ? security_socket_connect+0x94/0xc0 [ 85.369696] __sys_connect+0x37d/0x4c0 [ 85.373568] ? __ia32_sys_accept+0xb0/0xb0 [ 85.377788] ? kasan_check_read+0x11/0x20 [ 85.381921] ? _copy_to_user+0xc8/0x110 [ 85.385878] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 85.391402] ? put_timespec64+0x10f/0x1b0 [ 85.395541] ? trace_hardirqs_on+0xbd/0x310 [ 85.399848] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.405372] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.410718] ? __bpf_trace_preemptirq_template+0x30/0x30 [ 85.416157] __x64_sys_connect+0x73/0xb0 [ 85.420201] do_syscall_64+0x1b9/0x820 [ 85.424073] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 85.429421] ? syscall_return_slowpath+0x5e0/0x5e0 [ 85.434338] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 85.439166] ? trace_hardirqs_on_caller+0x310/0x310 [ 85.444165] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 85.449176] ? prepare_exit_to_usermode+0x291/0x3b0 [ 85.454188] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 85.459016] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.464204] RIP: 0033:0x457579 [ 85.467384] 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 [ 85.486264] RSP: 002b:00007f771bebec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 85.493957] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457579 [ 85.501210] RDX: 0000000000000010 RSI: 0000000020000200 RDI: 000000000000000a [ 85.508550] RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 [ 85.515801] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f771bebf6d4 [ 85.523054] R13: 00000000004bdb1a R14: 00000000004cc658 R15: 00000000ffffffff [ 85.531380] Kernel Offset: disabled [ 85.535000] Rebooting in 86400 seconds..