[ 71.502984][ T27] audit: type=1800 audit(1585519644.749:25): pid=9422 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 71.538438][ T27] audit: type=1800 audit(1585519644.749:26): pid=9422 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 71.656382][ T27] audit: type=1800 audit(1585519644.899:27): pid=9422 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. [ 72.184627][ T9498] sshd (9498) used greatest stack depth: 23216 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.14' (ECDSA) to the list of known hosts. 2020/03/29 22:07:39 parsed 1 programs 2020/03/29 22:07:40 executed programs: 0 syzkaller login: [ 87.422774][ T9589] IPVS: ftp: loaded support on port[0] = 21 [ 87.484536][ T9589] chnl_net:caif_netlink_parms(): no params data found [ 87.524962][ T9589] bridge0: port 1(bridge_slave_0) entered blocking state [ 87.532907][ T9589] bridge0: port 1(bridge_slave_0) entered disabled state [ 87.540933][ T9589] device bridge_slave_0 entered promiscuous mode [ 87.549881][ T9589] bridge0: port 2(bridge_slave_1) entered blocking state [ 87.556965][ T9589] bridge0: port 2(bridge_slave_1) entered disabled state [ 87.564824][ T9589] device bridge_slave_1 entered promiscuous mode [ 87.582581][ T9589] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 87.593365][ T9589] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 87.613278][ T9589] team0: Port device team_slave_0 added [ 87.621239][ T9589] team0: Port device team_slave_1 added [ 87.636547][ T9589] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 87.644001][ T9589] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 87.670050][ T9589] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 87.682377][ T9589] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 87.689405][ T9589] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 87.715298][ T9589] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 87.770894][ T9589] device hsr_slave_0 entered promiscuous mode [ 87.808787][ T9589] device hsr_slave_1 entered promiscuous mode [ 87.917509][ T9589] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 87.981823][ T9589] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 88.042010][ T9589] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 88.101079][ T9589] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 88.154519][ T9589] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.161850][ T9589] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.169913][ T9589] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.177125][ T9589] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.223855][ T9589] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.237306][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 88.247217][ T2761] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.255554][ T2761] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.264524][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 88.277507][ T9589] 8021q: adding VLAN 0 to HW filter on device team0 [ 88.288476][ T2894] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 88.296916][ T2894] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.304020][ T2894] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.328948][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 88.337418][ T2761] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.344709][ T2761] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.353233][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 88.362233][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 88.372071][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 88.382446][ T2894] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 88.395864][ T9589] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 88.407814][ T9589] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 88.418570][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 88.438276][ T2894] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 88.445721][ T2894] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 88.459370][ T9589] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 88.479534][ T2894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 88.498507][ T2894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 88.506849][ T2894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 88.517833][ T2894] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 88.525780][ T2894] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 88.537762][ T9589] device veth0_vlan entered promiscuous mode [ 88.549714][ T9589] device veth1_vlan entered promiscuous mode [ 88.570060][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 88.577947][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 88.586630][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 88.595741][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 88.606323][ T9589] device veth0_macvtap entered promiscuous mode [ 88.617841][ T9589] device veth1_macvtap entered promiscuous mode [ 88.634725][ T9589] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 88.643607][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 88.652018][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 88.660291][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 88.669469][ T2761] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 88.681862][ T9589] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 88.689652][ T2894] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 88.698102][ T2894] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 88.962705][ T9596] ------------[ cut here ]------------ [ 88.968208][ T9596] virt_to_cache: Object is not a Slab page! [ 88.974196][ T9596] WARNING: CPU: 1 PID: 9596 at mm/slab.h:475 kfree+0x1cf/0x2b0 [ 88.982157][ T9596] Kernel panic - not syncing: panic_on_warn set ... [ 88.988768][ T9596] CPU: 1 PID: 9596 Comm: syz-executor.0 Not tainted 5.6.0-rc3-next-20200228-syzkaller #0 [ 88.998548][ T9596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.008592][ T9596] Call Trace: [ 89.011881][ T9596] dump_stack+0x188/0x20d [ 89.016203][ T9596] ? kfree+0x150/0x2b0 [ 89.020255][ T9596] panic+0x2e3/0x75c [ 89.024183][ T9596] ? add_taint.cold+0x16/0x16 [ 89.028864][ T9596] ? __probe_kernel_read+0x188/0x1d0 [ 89.034138][ T9596] ? __warn.cold+0x14/0x35 [ 89.038706][ T9596] ? __warn+0xd5/0x1c8 [ 89.042756][ T9596] ? kfree+0x1cf/0x2b0 [ 89.046891][ T9596] __warn.cold+0x2f/0x35 [ 89.051111][ T9596] ? kfree+0x1cf/0x2b0 [ 89.055156][ T9596] report_bug+0x27b/0x2f0 [ 89.059574][ T9596] do_error_trap+0x12b/0x220 [ 89.064163][ T9596] ? kfree+0x1cf/0x2b0 [ 89.068216][ T9596] do_invalid_op+0x32/0x40 [ 89.072732][ T9596] ? kfree+0x1cf/0x2b0 [ 89.076809][ T9596] invalid_op+0x23/0x30 [ 89.080987][ T9596] RIP: 0010:kfree+0x1cf/0x2b0 [ 89.085682][ T9596] Code: 50 ff e9 67 fe ff ff 80 3d 59 0d d2 08 00 75 1c 48 c7 c6 00 63 35 88 48 c7 c7 f8 49 47 89 c6 05 42 0d d2 08 01 e8 79 f5 94 ff <0f> 0b f6 c7 02 75 6b 48 83 3d aa 5c e4 07 00 0f 85 4e ff ff ff 0f [ 89.105421][ T9596] RSP: 0018:ffffc90002297040 EFLAGS: 00010082 [ 89.111472][ T9596] RAX: 0000000000000000 RBX: 0000000000000286 RCX: 0000000000000000 [ 89.119424][ T9596] RDX: 0000000000000000 RSI: ffffffff815c4e91 RDI: fffff52000452dfa [ 89.127419][ T9596] RBP: ffffffff8c6187e0 R08: ffff88808f282040 R09: ffffed1015ce45c9 [ 89.135417][ T9596] R10: ffffed1015ce45c8 R11: ffff8880ae722e43 R12: ffffffff862da922 [ 89.143373][ T9596] R13: dffffc0000000000 R14: ffff88809f212910 R15: 0000000000000000 [ 89.151334][ T9596] ? tcf_exts_destroy+0x62/0xc0 [ 89.156169][ T9596] ? vprintk_func+0x81/0x17e [ 89.160743][ T9596] tcf_exts_destroy+0x62/0xc0 [ 89.165397][ T9596] tcf_exts_change+0xf4/0x150 [ 89.170063][ T9596] ? tcf_exts_destroy+0xc0/0xc0 [ 89.174909][ T9596] tcindex_set_parms+0xed8/0x1a00 [ 89.179932][ T9596] ? tcindex_alloc_perfect_hash+0x320/0x320 [ 89.185857][ T9596] ? lock_acquire+0x197/0x420 [ 89.190534][ T9596] ? bpf_image_alloc+0x10/0x10 [ 89.195290][ T9596] ? mark_held_locks+0xe0/0xe0 [ 89.200072][ T9596] ? nla_memcpy+0xa0/0xa0 [ 89.204392][ T9596] ? tcindex_change+0x203/0x2e0 [ 89.209218][ T9596] tcindex_change+0x203/0x2e0 [ 89.213897][ T9596] ? tcindex_set_parms+0x1a00/0x1a00 [ 89.219222][ T9596] tc_new_tfilter+0xa59/0x20b0 [ 89.224003][ T9596] ? tcindex_set_parms+0x1a00/0x1a00 [ 89.229295][ T9596] ? tc_del_tfilter+0x1430/0x1430 [ 89.234323][ T9596] ? apparmor_capable+0x49c/0x8a0 [ 89.239351][ T9596] ? rcu_read_lock_held+0x9c/0xb0 [ 89.244368][ T9596] ? tc_del_tfilter+0x1430/0x1430 [ 89.249423][ T9596] rtnetlink_rcv_msg+0x810/0xad0 [ 89.254421][ T9596] ? rtnl_bridge_getlink+0x880/0x880 [ 89.259704][ T9596] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 89.264988][ T9596] ? __copy_skb_header+0x290/0x5b0 [ 89.270083][ T9596] ? skb_splice_bits+0x1a0/0x1a0 [ 89.274999][ T9596] ? __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 89.280921][ T9596] ? kmem_cache_alloc+0x261/0x730 [ 89.285938][ T9596] netlink_rcv_skb+0x15a/0x410 [ 89.290837][ T9596] ? rtnl_bridge_getlink+0x880/0x880 [ 89.296111][ T9596] ? netlink_ack+0xa80/0xa80 [ 89.300695][ T9596] netlink_unicast+0x537/0x740 [ 89.305443][ T9596] ? netlink_attachskb+0x810/0x810 [ 89.310539][ T9596] ? _copy_from_iter_full+0x25c/0x870 [ 89.315892][ T9596] ? __phys_addr_symbol+0x2c/0x70 [ 89.320907][ T9596] ? __check_object_size+0x171/0x437 [ 89.326175][ T9596] netlink_sendmsg+0x882/0xe10 [ 89.330925][ T9596] ? aa_af_perm+0x260/0x260 [ 89.335408][ T9596] ? netlink_unicast+0x740/0x740 [ 89.340507][ T9596] ? netlink_unicast+0x740/0x740 [ 89.345423][ T9596] sock_sendmsg+0xcf/0x120 [ 89.349819][ T9596] ____sys_sendmsg+0x6b9/0x7d0 [ 89.354576][ T9596] ? kernel_sendmsg+0x50/0x50 [ 89.359250][ T9596] ? mark_lock+0xbc/0x1220 [ 89.363658][ T9596] ___sys_sendmsg+0x100/0x170 [ 89.368325][ T9596] ? sendmsg_copy_msghdr+0x70/0x70 [ 89.373423][ T9596] ? __fget_files+0x329/0x4f0 [ 89.378092][ T9596] ? do_dup2+0x520/0x520 [ 89.382392][ T9596] ? lock_acquire+0x197/0x420 [ 89.387208][ T9596] ? __might_fault+0xef/0x1d0 [ 89.391891][ T9596] ? __fget_light+0x208/0x270 [ 89.396560][ T9596] __sys_sendmsg+0xec/0x1b0 [ 89.401047][ T9596] ? __sys_sendmsg_sock+0xb0/0xb0 [ 89.406050][ T9596] ? __x64_sys_futex+0x380/0x4f0 [ 89.410976][ T9596] ? trace_hardirqs_off_caller+0x55/0x230 [ 89.416673][ T9596] ? do_syscall_64+0x21/0x790 [ 89.421331][ T9596] do_syscall_64+0xf6/0x790 [ 89.426039][ T9596] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.431946][ T9596] RIP: 0033:0x45c849 [ 89.435820][ T9596] Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 89.455405][ T9596] RSP: 002b:00007f176bb01c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 89.463903][ T9596] RAX: ffffffffffffffda RBX: 00007f176bb026d4 RCX: 000000000045c849 [ 89.471855][ T9596] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 89.479808][ T9596] RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000 [ 89.487768][ T9596] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 89.495734][ T9596] R13: 00000000000009fd R14: 00000000004ccb4d R15: 000000000076bf0c [ 89.505072][ T9596] Kernel Offset: disabled [ 89.509400][ T9596] Rebooting in 86400 seconds..