INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] 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 '10.128.10.1' (ECDSA) to the list of known hosts. 2018/04/03 14:30:09 parsed 1 programs 2018/04/03 14:30:09 executed programs: 0 syzkaller login: [ 35.110982] IPVS: ftp: loaded support on port[0] = 21 [ 35.151274] kasan: CONFIG_KASAN_INLINE enabled [ 35.155962] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.163333] general protection fault: 0000 [#1] SMP KASAN [ 35.168847] Dumping ftrace buffer: [ 35.172353] (ftrace buffer empty) [ 35.176035] Modules linked in: [ 35.179201] CPU: 1 PID: 4491 Comm: syz-executor0 Not tainted 4.16.0+ #287 [ 35.186094] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.195427] RIP: 0010:ucma_set_ib_path.isra.14+0x26a/0x850 [ 35.201019] RSP: 0018:ffff8801ad3377a0 EFLAGS: 00010202 [ 35.206350] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000029 [ 35.213590] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000148 [ 35.220831] RBP: ffff8801ad3379a0 R08: ffffed0035a66f0e R09: ffffffff87b6c65c [ 35.228070] R10: 0000000000000002 R11: ffffed0035a66f0d R12: ffff8801ad337850 [ 35.235308] R13: 1ffff10035a66ef6 R14: ffff8801d9225970 R15: ffff8801ad1e04c0 [ 35.242550] FS: 0000000000000000(0000) GS:ffff8801db100000(0063) knlGS:00000000093ca900 [ 35.250743] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 35.256593] CR2: 0000000008138024 CR3: 00000001acca4001 CR4: 00000000001606e0 [ 35.263834] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.271072] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.278314] Call Trace: [ 35.280871] ? ucma_event_handler+0xfa0/0xfa0 [ 35.285336] ? __might_fault+0x110/0x1d0 [ 35.289372] ? lock_downgrade+0x980/0x980 [ 35.293493] ? kasan_check_read+0x11/0x20 [ 35.297615] ? __might_sleep+0x95/0x190 [ 35.301562] ? kasan_check_write+0x14/0x20 [ 35.305768] ? _copy_from_user+0x99/0x110 [ 35.309884] ucma_set_option+0x234/0x520 [ 35.313919] ? ucma_set_option+0x234/0x520 [ 35.318120] ? ucma_set_ib_path.isra.14+0x850/0x850 [ 35.323106] ? kasan_check_write+0x14/0x20 [ 35.327307] ? _copy_from_user+0x99/0x110 [ 35.331424] ucma_write+0x2d6/0x3d0 [ 35.335020] ? ucma_set_ib_path.isra.14+0x850/0x850 [ 35.340003] ? ucma_close_id+0x60/0x60 [ 35.343859] ? trace_hardirqs_off+0x10/0x10 [ 35.348149] ? find_held_lock+0x35/0x1d0 [ 35.352186] ? ucma_close_id+0x60/0x60 [ 35.356045] __vfs_write+0xef/0x970 [ 35.359639] ? kernel_read+0x120/0x120 [ 35.363495] ? find_held_lock+0x35/0x1d0 [ 35.367527] ? fsnotify+0x7b3/0x1140 [ 35.371213] ? security_file_permission+0x89/0x1e0 [ 35.376110] ? rw_verify_area+0xe5/0x2b0 [ 35.380140] ? __fdget_raw+0x20/0x20 [ 35.383821] vfs_write+0x189/0x510 [ 35.387328] ksys_write+0xef/0x220 [ 35.390834] ? SyS_read+0x30/0x30 [ 35.394257] SyS_write+0x24/0x30 [ 35.397590] ? ksys_write+0x220/0x220 [ 35.401362] do_fast_syscall_32+0x3ec/0xf9f [ 35.405652] ? do_int80_syscall_32+0x9c0/0x9c0 [ 35.410207] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 35.415717] ? syscall_return_slowpath+0x2ac/0x550 [ 35.420618] ? sysret32_from_system_call+0x5/0x3c [ 35.425430] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.430245] entry_SYSENTER_compat+0x70/0x7f [ 35.434623] RIP: 0023:0xf7f27c99 [ 35.437956] RSP: 002b:00000000ffc9763c EFLAGS: 00000282 ORIG_RAX: 0000000000000004 [ 35.445638] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020001500 [ 35.452877] RDX: 0000000000000020 RSI: 0000000000000000 RDI: 0000000000000000 [ 35.460118] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 35.467358] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 35.474597] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.481843] Code: 00 00 48 c1 ea 03 80 3c 02 00 0f 85 0d 05 00 00 49 8b 07 48 ba 00 00 00 00 00 fc ff df 48 8d b8 48 01 00 00 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 54 05 00 00 48 c1 e3 04 48 03 98 48 01 00 00 [ 35.500922] RIP: ucma_set_ib_path.isra.14+0x26a/0x850 RSP: ffff8801ad3377a0 [ 35.508066] ---[ end trace 2b62b3b6bbde3040 ]--- [ 35.512806] Kernel panic - not syncing: Fatal exception [ 35.518578] Dumping ftrace buffer: [ 35.522089] (ftrace buffer empty) [ 35.525771] Kernel Offset: disabled [ 35.529375] Rebooting in 86400 seconds..