[....] 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. [ 68.208285][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 68.208298][ T26] audit: type=1800 audit(1561585024.436:29): pid=9191 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 68.235197][ T26] audit: type=1800 audit(1561585024.446:30): pid=9191 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.46' (ECDSA) to the list of known hosts. 2019/06/26 21:37:17 parsed 1 programs 2019/06/26 21:37:19 executed programs: 0 syzkaller login: [ 83.379842][ T9360] IPVS: ftp: loaded support on port[0] = 21 [ 83.450926][ T9360] chnl_net:caif_netlink_parms(): no params data found [ 83.481403][ T9360] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.488820][ T9360] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.497204][ T9360] device bridge_slave_0 entered promiscuous mode [ 83.506142][ T9360] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.513406][ T9360] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.521246][ T9360] device bridge_slave_1 entered promiscuous mode [ 83.539361][ T9360] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 83.550139][ T9360] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 83.570728][ T9360] team0: Port device team_slave_0 added [ 83.577934][ T9360] team0: Port device team_slave_1 added [ 83.641188][ T9360] device hsr_slave_0 entered promiscuous mode [ 83.678959][ T9360] device hsr_slave_1 entered promiscuous mode [ 83.757627][ T9360] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.765099][ T9360] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.773252][ T9360] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.780414][ T9360] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.817420][ T9360] 8021q: adding VLAN 0 to HW filter on device bond0 [ 83.832247][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 83.842954][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 83.852118][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 83.860746][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 83.873794][ T9360] 8021q: adding VLAN 0 to HW filter on device team0 [ 83.885081][ T3330] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 83.894873][ T3330] bridge0: port 1(bridge_slave_0) entered blocking state [ 83.902372][ T3330] bridge0: port 1(bridge_slave_0) entered forwarding state [ 83.921816][ T9364] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 83.930927][ T9364] bridge0: port 2(bridge_slave_1) entered blocking state [ 83.938039][ T9364] bridge0: port 2(bridge_slave_1) entered forwarding state [ 83.951704][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 83.961057][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 83.979738][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 83.989416][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 83.997860][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 84.010275][ T9360] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 84.029568][ T9360] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 84.949115][ T9472] kasan: CONFIG_KASAN_INLINE enabled [ 84.954864][ T9472] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 84.967605][ T9472] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 84.974637][ T9472] CPU: 1 PID: 9472 Comm: syz-executor.0 Not tainted 5.2.0-rc6-next-20190626 #23 [ 84.983666][ T9472] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.993775][ T9472] RIP: 0010:do_move_mount.isra.0+0x5fe/0xe10 [ 84.999747][ T9472] Code: ff ff 00 0f 84 7a fb ff ff e8 1e 0b b4 ff 48 8b 85 50 ff ff ff 48 8d 78 48 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 6d 07 00 00 48 8b 85 50 ff ff ff 31 ff 4c 8b 78 [ 85.019521][ T9472] RSP: 0018:ffff888099de7d58 EFLAGS: 00010206 [ 85.025613][ T9472] RAX: dffffc0000000000 RBX: ffff888099de7ea8 RCX: 1ffff11015330137 [ 85.033577][ T9472] RDX: 0000000000000006 RSI: ffffffff81be52d2 RDI: 0000000000000032 [ 85.041633][ T9472] RBP: ffff888099de7e38 R08: ffff88809a08c5c0 R09: ffffed1015d26c7c [ 85.049600][ T9472] R10: ffffed1015d26c7b R11: ffff8880ae9363db R12: ffff8880a1341300 [ 85.057600][ T9472] R13: ffff88821b6a1420 R14: ffff888099de7e90 R15: ffff8880a99809a0 [ 85.065661][ T9472] FS: 00007fc236ea4700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 85.074583][ T9472] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.081158][ T9472] CR2: 0000000000625208 CR3: 000000009c2c6000 CR4: 00000000001506e0 [ 85.089121][ T9472] Call Trace: [ 85.092414][ T9472] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 85.098656][ T9472] ? strncpy_from_user+0x2b4/0x400 [ 85.103766][ T9472] ? do_add_mount+0x380/0x380 [ 85.108444][ T9472] __x64_sys_move_mount+0x355/0x440 [ 85.114076][ T9472] ? __ia32_sys_fsmount+0xcc0/0xcc0 [ 85.119292][ T9472] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 85.124757][ T9472] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.130841][ T9472] ? do_syscall_64+0x26/0x6a0 [ 85.135520][ T9472] ? lockdep_hardirqs_on+0x418/0x5d0 [ 85.140815][ T9472] ? trace_hardirqs_on+0x67/0x240 [ 85.145847][ T9472] do_syscall_64+0xfd/0x6a0 [ 85.150350][ T9472] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.156239][ T9472] RIP: 0033:0x459519 [ 85.160123][ T9472] Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 85.179739][ T9472] RSP: 002b:00007fc236ea3c78 EFLAGS: 00000246 ORIG_RAX: 00000000000001ad [ 85.188597][ T9472] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459519 [ 85.196696][ T9472] RDX: ffffffffffffff9c RSI: 0000000020000040 RDI: 0000000000000003 [ 85.204670][ T9472] RBP: 000000000075c070 R08: 0000000000000066 R09: 0000000000000000 [ 85.212653][ T9472] R10: 0000000020000100 R11: 0000000000000246 R12: 00007fc236ea46d4 [ 85.220640][ T9472] R13: 00000000004c5959 R14: 00000000004da0e8 R15: 00000000ffffffff [ 85.228612][ T9472] Modules linked in: [ 85.234773][ T9472] ---[ end trace a27725aef6f18fe9 ]--- [ 85.240442][ T9472] RIP: 0010:do_move_mount.isra.0+0x5fe/0xe10 [ 85.246420][ T9472] Code: ff ff 00 0f 84 7a fb ff ff e8 1e 0b b4 ff 48 8b 85 50 ff ff ff 48 8d 78 48 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 6d 07 00 00 48 8b 85 50 ff ff ff 31 ff 4c 8b 78 [ 85.266699][ T9472] RSP: 0018:ffff888099de7d58 EFLAGS: 00010206 [ 85.272856][ T9472] RAX: dffffc0000000000 RBX: ffff888099de7ea8 RCX: 1ffff11015330137 [ 85.281069][ T9472] RDX: 0000000000000006 RSI: ffffffff81be52d2 RDI: 0000000000000032 [ 85.289129][ T9472] RBP: ffff888099de7e38 R08: ffff88809a08c5c0 R09: ffffed1015d26c7c [ 85.297113][ T9472] R10: ffffed1015d26c7b R11: ffff8880ae9363db R12: ffff8880a1341300 [ 85.305179][ T9472] R13: ffff88821b6a1420 R14: ffff888099de7e90 R15: ffff8880a99809a0 [ 85.313223][ T9472] FS: 00007fc236ea4700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 85.322254][ T9472] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.328915][ T9472] CR2: 0000000000625208 CR3: 000000009c2c6000 CR4: 00000000001506e0 [ 85.336884][ T9472] Kernel panic - not syncing: Fatal exception [ 85.344200][ T9472] Kernel Offset: disabled [ 85.348535][ T9472] Rebooting in 86400 seconds..