[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 38.823999][ T26] audit: type=1800 audit(1556428367.731:25): pid=7683 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 38.856120][ T26] audit: type=1800 audit(1556428367.731:26): pid=7683 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 38.891591][ T26] audit: type=1800 audit(1556428367.731:27): pid=7683 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.0.39' (ECDSA) to the list of known hosts. 2019/04/28 05:12:59 parsed 1 programs 2019/04/28 05:13:01 executed programs: 0 syzkaller login: [ 52.146473][ T7848] IPVS: ftp: loaded support on port[0] = 21 [ 52.205447][ T7848] chnl_net:caif_netlink_parms(): no params data found [ 52.237165][ T7848] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.244752][ T7848] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.252776][ T7848] device bridge_slave_0 entered promiscuous mode [ 52.261180][ T7848] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.269479][ T7848] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.277308][ T7848] device bridge_slave_1 entered promiscuous mode [ 52.293425][ T7848] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.303585][ T7848] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.322175][ T7848] team0: Port device team_slave_0 added [ 52.329317][ T7848] team0: Port device team_slave_1 added [ 52.407802][ T7848] device hsr_slave_0 entered promiscuous mode [ 52.446290][ T7848] device hsr_slave_1 entered promiscuous mode [ 52.503366][ T7848] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.510617][ T7848] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.518427][ T7848] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.525524][ T7848] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.555835][ T7848] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.570800][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 52.581666][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 52.589868][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 52.598068][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 52.610333][ T7848] 8021q: adding VLAN 0 to HW filter on device team0 [ 52.621513][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.630210][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 52.637367][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 52.657839][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.666518][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 52.673571][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 52.681723][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.690608][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.699767][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 52.710712][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 52.718605][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 52.729381][ T7848] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 52.747103][ T7848] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 52.798944][ T7854] overlayfs: workdir and upperdir must reside under the same mount [ 52.811242][ T7856] overlayfs: workdir and upperdir must reside under the same mount [ 52.841882][ T7860] overlayfs: workdir and upperdir must reside under the same mount [ 52.853170][ T7861] overlayfs: workdir and upperdir must reside under the same mount [ 52.882285][ T7864] overlayfs: workdir and upperdir must reside under the same mount [ 52.894006][ T7865] overlayfs: workdir and upperdir must reside under the same mount [ 52.922698][ T7868] overlayfs: workdir and upperdir must reside under the same mount [ 52.933915][ T7870] overlayfs: workdir and upperdir must reside under the same mount [ 52.959975][ T7873] overlayfs: workdir and upperdir must reside under the same mount [ 52.971272][ T7875] overlayfs: workdir and upperdir must reside under the same mount [ 52.997021][ T7878] overlayfs: workdir and upperdir must reside under the same mount [ 53.010034][ T7880] overlayfs: workdir and upperdir must reside under the same mount [ 53.035940][ T7883] overlayfs: workdir and upperdir must reside under the same mount [ 53.048679][ T7884] overlayfs: workdir and upperdir must reside under the same mount [ 53.074519][ T7887] overlayfs: workdir and upperdir must reside under the same mount [ 53.086926][ T7888] overlayfs: workdir and upperdir must reside under the same mount [ 53.114976][ T7891] overlayfs: workdir and upperdir must reside under the same mount [ 53.129393][ T7893] overlayfs: workdir and upperdir must reside under the same mount [ 53.154662][ T7896] overlayfs: workdir and upperdir must reside under the same mount [ 53.165405][ T7897] overlayfs: workdir and upperdir must reside under the same mount [ 53.195668][ T7900] overlayfs: workdir and upperdir must reside under the same mount [ 53.208819][ T7902] overlayfs: workdir and upperdir must reside under the same mount [ 53.238032][ T7905] overlayfs: workdir and upperdir must reside under the same mount [ 53.248920][ T7906] overlayfs: workdir and upperdir must reside under the same mount [ 53.278313][ T7909] overlayfs: workdir and upperdir must reside under the same mount [ 53.289540][ T7910] overlayfs: workdir and upperdir must reside under the same mount [ 53.317599][ T7913] overlayfs: workdir and upperdir must reside under the same mount [ 53.329359][ T7915] overlayfs: workdir and upperdir must reside under the same mount [ 53.355234][ T7917] overlayfs: workdir and upperdir must reside under the same mount [ 53.369947][ T7919] overlayfs: workdir and upperdir must reside under the same mount [ 53.400253][ T7922] overlayfs: workdir and upperdir must reside under the same mount [ 53.411479][ T7923] overlayfs: workdir and upperdir must reside under the same mount [ 53.437541][ T7926] overlayfs: workdir and upperdir must reside under the same mount [ 53.449308][ T7927] overlayfs: workdir and upperdir must reside under the same mount [ 53.480312][ T7930] overlayfs: workdir and upperdir must reside under the same mount [ 53.491653][ T7932] overlayfs: workdir and upperdir must reside under the same mount [ 53.519828][ T7935] overlayfs: workdir and upperdir must reside under the same mount [ 53.531364][ T7936] overlayfs: workdir and upperdir must reside under the same mount [ 53.561155][ T7939] overlayfs: workdir and upperdir must reside under the same mount [ 53.572594][ T7940] overlayfs: workdir and upperdir must reside under the same mount [ 53.604963][ T7943] overlayfs: workdir and upperdir must reside under the same mount [ 53.616227][ T7944] overlayfs: workdir and upperdir must reside under the same mount [ 53.642206][ T7947] overlayfs: workdir and upperdir must reside under the same mount [ 53.653775][ T7948] overlayfs: workdir and upperdir must reside under the same mount [ 53.679744][ T7951] overlayfs: workdir and upperdir must reside under the same mount [ 53.691553][ T7953] overlayfs: workdir and upperdir must reside under the same mount [ 53.720602][ T7956] overlayfs: workdir and upperdir must reside under the same mount [ 53.731995][ T7957] overlayfs: workdir and upperdir must reside under the same mount [ 53.759306][ T7960] overlayfs: workdir and upperdir must reside under the same mount [ 53.770250][ T7961] overlayfs: workdir and upperdir must reside under the same mount [ 53.796948][ T7964] overlayfs: workdir and upperdir must reside under the same mount [ 53.808460][ T7965] overlayfs: workdir and upperdir must reside under the same mount [ 53.834563][ T7968] overlayfs: workdir and upperdir must reside under the same mount [ 53.845545][ T7969] overlayfs: workdir and upperdir must reside under the same mount [ 53.875156][ T7972] overlayfs: workdir and upperdir must reside under the same mount [ 53.888673][ T7973] overlayfs: workdir and upperdir must reside under the same mount [ 53.913984][ T7976] overlayfs: workdir and upperdir must reside under the same mount [ 53.924969][ T7978] overlayfs: workdir and upperdir must reside under the same mount [ 53.953615][ T7981] overlayfs: workdir and upperdir must reside under the same mount [ 53.965074][ T7982] overlayfs: workdir and upperdir must reside under the same mount [ 53.992918][ T7984] overlayfs: workdir and upperdir must reside under the same mount [ 54.007885][ T7986] overlayfs: upper fs does not support tmpfile. [ 54.014323][ T7986] overlayfs: upper fs does not support xattr, falling back to index=off and metacopy=off. [ 54.030237][ T7984] WARNING: CPU: 0 PID: 7984 at fs/overlayfs/dir.c:1176 ovl_rename+0x159c/0x1940 [ 54.039398][ T7984] Kernel panic - not syncing: panic_on_warn set ... [ 54.045993][ T7984] CPU: 0 PID: 7984 Comm: syz-executor.0 Not tainted 5.1.0-rc6+ #89 [ 54.053906][ T7984] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.064040][ T7984] Call Trace: [ 54.067330][ T7984] dump_stack+0x172/0x1f0 [ 54.071738][ T7984] ? ovl_rename+0x1590/0x1940 [ 54.076418][ T7984] panic+0x2cb/0x65c [ 54.080338][ T7984] ? __warn_printk+0xf3/0xf3 [ 54.084918][ T7984] ? ovl_rename+0x159c/0x1940 [ 54.089579][ T7984] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.095807][ T7984] ? __warn.cold+0x5/0x45 [ 54.100118][ T7984] ? __warn+0xe8/0x1d0 [ 54.104175][ T7984] ? ovl_rename+0x159c/0x1940 [ 54.108931][ T7984] __warn.cold+0x20/0x45 [ 54.113172][ T7984] ? __d_lookup+0x433/0x760 [ 54.117666][ T7984] ? ovl_rename+0x159c/0x1940 [ 54.122351][ T7984] report_bug+0x263/0x2b0 [ 54.126684][ T7984] do_error_trap+0x11b/0x200 [ 54.131280][ T7984] do_invalid_op+0x37/0x50 [ 54.135701][ T7984] ? ovl_rename+0x159c/0x1940 [ 54.140373][ T7984] invalid_op+0x14/0x20 [ 54.144530][ T7984] RIP: 0010:ovl_rename+0x159c/0x1940 [ 54.149798][ T7984] Code: 80 00 00 00 e8 45 f7 19 ff 8b b4 24 80 00 00 00 85 f6 0f 85 cd f6 ff ff e8 b1 f5 19 ff 4c 89 f7 e9 a5 f6 ff ff e8 a4 f5 19 ff <0f> 0b e9 a4 f3 ff ff e8 98 f5 19 ff 48 8b 54 24 70 b8 ff ff 37 00 [ 54.169394][ T7984] RSP: 0018:ffff8880a92afad8 EFLAGS: 00010293 [ 54.175470][ T7984] RAX: ffff888085faa380 RBX: 0000000000000000 RCX: ffff888096e934a0 [ 54.183452][ T7984] RDX: 0000000000000000 RSI: ffffffff8256970c RDI: ffff888096e934f8 [ 54.191423][ T7984] RBP: ffff8880a92afbf8 R08: ffff888085faa380 R09: 0000000000000008 [ 54.199396][ T7984] R10: ffffed1015d05bc7 R11: ffff8880ae82de3b R12: ffff888096e93e40 [ 54.207374][ T7984] R13: 0000000000000000 R14: ffff888096e93340 R15: ffff8880a92afb90 [ 54.215438][ T7984] ? ovl_rename+0x159c/0x1940 [ 54.220110][ T7984] ? ovl_rename+0x159c/0x1940 [ 54.224893][ T7984] ? ovl_clear_empty+0x610/0x610 [ 54.229831][ T7984] ? down_write_nested+0x3c/0x90 [ 54.234762][ T7984] ? lock_two_nondirectories+0xdd/0x120 [ 54.240302][ T7984] vfs_rename+0x803/0x1ac0 [ 54.244710][ T7984] ? lookup_one_len+0x1a0/0x1a0 [ 54.249549][ T7984] ? d_alloc+0x1fe/0x2b0 [ 54.253782][ T7984] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.260034][ T7984] ? security_path_rename+0x185/0x310 [ 54.265397][ T7984] do_renameat2+0xb0f/0xc40 [ 54.269912][ T7984] ? user_path_create+0x50/0x50 [ 54.274788][ T7984] ? nsecs_to_jiffies+0x30/0x30 [ 54.279659][ T7984] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 54.285123][ T7984] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.291178][ T7984] ? do_syscall_64+0x26/0x610 [ 54.295845][ T7984] ? lockdep_hardirqs_on+0x418/0x5d0 [ 54.301125][ T7984] __x64_sys_rename+0x61/0x80 [ 54.305790][ T7984] do_syscall_64+0x103/0x610 [ 54.310381][ T7984] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.316283][ T7984] RIP: 0033:0x458da9 [ 54.320175][ T7984] Code: ad b8 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 b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 54.339776][ T7984] RSP: 002b:00007fe8b143dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 54.349541][ T7984] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000458da9 [ 54.357524][ T7984] RDX: 0000000000000000 RSI: 0000000020000140 RDI: 00000000200000c0 [ 54.365490][ T7984] RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 [ 54.373473][ T7984] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe8b143e6d4 [ 54.381450][ T7984] R13: 00000000004c5d4c R14: 00000000004da328 R15: 00000000ffffffff [ 54.390625][ T7984] Kernel Offset: disabled [ 54.395040][ T7984] Rebooting in 86400 seconds..