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 '10.128.10.2' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   30.705994] kasan: CONFIG_KASAN_INLINE enabled
[   30.710663] kasan: GPF could be caused by NULL-ptr deref or user memory access
[   30.718284] general protection fault: 0000 [#1] SMP KASAN
[   30.723794] Dumping ftrace buffer:
[   30.727307]    (ftrace buffer empty)
[   30.730986] Modules linked in:
[   30.734150] CPU: 1 PID: 4480 Comm: syzkaller522221 Not tainted 4.16.0+ #12
[   30.741135] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   30.750467] RIP: 0010:ucma_set_ib_path.isra.14+0x26a/0x850
[   30.756056] RSP: 0018:ffff8801ad1ef7f0 EFLAGS: 00010202
[   30.761392] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000029
[   30.768633] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000148
[   30.775872] RBP: ffff8801ad1ef9f0 R08: ffffed0035a3df18 R09: ffffffff87b6c65c
[   30.783117] R10: 0000000000000002 R11: ffffed0035a3df17 R12: ffff8801ad1ef8a0
[   30.790359] R13: 1ffff10035a3df00 R14: ffff8801d97290f0 R15: ffff8801ad112900
[   30.797607] FS:  0000000002371880(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000
[   30.805804] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   30.811656] CR2: 0000000020000140 CR3: 00000001d96c3001 CR4: 00000000001606e0
[   30.818899] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   30.826140] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   30.833378] Call Trace:
[   30.835937]  ? ucma_event_handler+0xfa0/0xfa0
[   30.840403]  ? __might_fault+0x110/0x1d0
[   30.844434]  ? lock_downgrade+0x980/0x980
[   30.848551]  ? kasan_check_read+0x11/0x20
[   30.852669]  ? __might_sleep+0x95/0x190
[   30.856613]  ? kasan_check_write+0x14/0x20
[   30.860818]  ? _copy_from_user+0x99/0x110
[   30.864933]  ucma_set_option+0x234/0x520
[   30.868962]  ? ucma_set_option+0x234/0x520
[   30.873166]  ? ucma_set_ib_path.isra.14+0x850/0x850
[   30.878151]  ? kasan_check_write+0x14/0x20
[   30.882354]  ? _copy_from_user+0x99/0x110
[   30.886489]  ucma_write+0x2d6/0x3d0
[   30.890083]  ? ucma_set_ib_path.isra.14+0x850/0x850
[   30.895067]  ? ucma_close_id+0x60/0x60
[   30.898931]  ? do_raw_spin_unlock+0x9e/0x310
[   30.903324]  ? do_raw_spin_trylock+0x1a0/0x1a0
[   30.907882]  ? ucma_close_id+0x60/0x60
[   30.911739]  __vfs_write+0xef/0x970
[   30.915337]  ? kernel_read+0x120/0x120
[   30.919212]  ? may_open_dev+0xe0/0xe0
[   30.922989]  ? fsnotify+0x7b3/0x1140
[   30.926681]  ? rcu_is_watching+0x85/0x130
[   30.930798]  ? security_file_permission+0x89/0x1e0
[   30.935697]  ? rw_verify_area+0xe5/0x2b0
[   30.939725]  ? __fdget_raw+0x20/0x20
[   30.943404]  vfs_write+0x189/0x510
[   30.946922]  ksys_write+0xef/0x220
[   30.950430]  ? SyS_read+0x30/0x30
[   30.953851]  SyS_write+0x24/0x30
[   30.957183]  ? ksys_write+0x220/0x220
[   30.960952]  do_syscall_64+0x281/0x940
[   30.964809]  ? vmalloc_sync_all+0x30/0x30
[   30.968931]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   30.973655]  ? syscall_return_slowpath+0x550/0x550
[   30.978549]  ? syscall_return_slowpath+0x2ac/0x550
[   30.983444]  ? prepare_exit_to_usermode+0x350/0x350
[   30.988437]  ? entry_SYSCALL_64_after_hwframe+0x52/0xb7
[   30.993776]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   30.998586]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   31.003743] RIP: 0033:0x440039
[   31.006910] RSP: 002b:00007ffc058b1de8 EFLAGS: 00000217 ORIG_RAX: 0000000000000001
[   31.014587] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440039
[   31.021891] RDX: 0000000000000020 RSI: 0000000020001500 RDI: 0000000000000003
[   31.029128] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
[   31.036366] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401960
[   31.043603] R13: 00000000004019f0 R14: 0000000000000000 R15: 0000000000000000
[   31.050844] 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 
[   31.069918] RIP: ucma_set_ib_path.isra.14+0x26a/0x850 RSP: ffff8801ad1ef7f0
[   31.077075] ---[ end trace f29aeaedf97bccec ]---
[   31.081812] Kernel panic - not syncing: Fatal exception
[   31.087485] Dumping ftrace buffer:
[   31.090992]    (ftrace buffer empty)
[   31.094671] Kernel Offset: disabled
[   31.098267] Rebooting in 86400 seconds..