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 '10.128.0.34' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 25.164439] kasan: CONFIG_KASAN_INLINE enabled [ 25.169097] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.176629] general protection fault: 0000 [#1] SMP KASAN [ 25.182152] Dumping ftrace buffer: [ 25.185664] (ftrace buffer empty) [ 25.189347] Modules linked in: [ 25.192515] CPU: 0 PID: 4185 Comm: syzkaller097489 Not tainted 4.16.0-rc6+ #1 [ 25.199756] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.209097] RIP: 0010:rdma_init_qp_attr+0x8b/0x720 [ 25.213995] RSP: 0018:ffff8801b7ca7840 EFLAGS: 00010202 [ 25.219341] RAX: dffffc0000000000 RBX: ffff8801b9061200 RCX: ffffffff841bbfbf [ 25.226593] RDX: 0000000000000029 RSI: ffff8801b7ca79c8 RDI: 0000000000000148 [ 25.233834] RBP: ffff8801b7ca7880 R08: ffffed0036f94f4e R09: ffff8801b7ca79cc [ 25.241076] R10: 0000000000000000 R11: ffffed0036f94f4d R12: ffff8801b7ca79c8 [ 25.248317] R13: ffff8801b7ca7908 R14: 0000000000000000 R15: ffff8801b7ca78c8 [ 25.255558] FS: 000000000223d880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 25.263757] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.269607] CR2: 0000000020000180 CR3: 00000001b879c004 CR4: 00000000001606f0 [ 25.276849] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.284089] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.291330] Call Trace: [ 25.293897] ucma_init_qp_attr+0x251/0x440 [ 25.298105] ? ucma_notify+0x1a0/0x1a0 [ 25.301968] ? find_held_lock+0x35/0x1d0 [ 25.306019] ? __might_fault+0x110/0x1d0 [ 25.310062] ? lock_downgrade+0x980/0x980 [ 25.314181] ? lock_release+0xa40/0xa40 [ 25.318129] ? check_same_owner+0x320/0x320 [ 25.322437] ? kasan_check_write+0x14/0x20 [ 25.326644] ucma_write+0x2d6/0x3d0 [ 25.330243] ? ucma_notify+0x1a0/0x1a0 [ 25.334099] ? ucma_close_id+0x60/0x60 [ 25.337958] ? ucma_close_id+0x60/0x60 [ 25.341817] __vfs_write+0xef/0x970 [ 25.345418] ? kernel_read+0x120/0x120 [ 25.349279] ? fsnotify+0x7b3/0x1140 [ 25.352963] ? rcu_pm_notify+0xc0/0xc0 [ 25.356828] ? security_file_permission+0x89/0x1e0 [ 25.361731] ? rw_verify_area+0xe5/0x2b0 [ 25.365760] ? __fdget_raw+0x20/0x20 [ 25.369444] vfs_write+0x189/0x510 [ 25.372958] SyS_write+0xef/0x220 [ 25.376380] ? filp_open+0x70/0x70 [ 25.379893] ? SyS_read+0x220/0x220 [ 25.383495] ? do_syscall_64+0xb7/0x940 [ 25.387450] ? SyS_read+0x220/0x220 [ 25.391047] do_syscall_64+0x281/0x940 [ 25.394902] ? __do_page_fault+0xc90/0xc90 [ 25.399107] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.403835] ? syscall_return_slowpath+0x550/0x550 [ 25.408733] ? syscall_return_slowpath+0x2ac/0x550 [ 25.413633] ? prepare_exit_to_usermode+0x350/0x350 [ 25.418623] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 25.423969] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.428784] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 25.433944] RIP: 0033:0x43fdc9 [ 25.437105] RSP: 002b:00007fff3ab15da8 EFLAGS: 00000217 ORIG_RAX: 0000000000000001 [ 25.444780] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fdc9 [ 25.452118] RDX: 0000000000000018 RSI: 0000000020000cc0 RDI: 0000000000000003 [ 25.459357] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 25.466598] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004016f0 [ 25.473838] R13: 0000000000401780 R14: 0000000000000000 R15: 0000000000000000 [ 25.481084] Code: 00 00 00 fc ff df 80 3c 02 00 0f 85 8c 06 00 00 4c 8b 33 48 b8 00 00 00 00 00 fc ff df 49 8d be 48 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5d 06 00 00 44 0f b6 7d d4 48 b8 00 00 00 00 [ 25.500152] RIP: rdma_init_qp_attr+0x8b/0x720 RSP: ffff8801b7ca7840 [ 25.506603] ---[ end trace 370b22fcc7e30bd0 ]--- [ 25.511375] Kernel panic - not syncing: Fatal exception [ 25.517177] Dumping ftrace buffer: [ 25.520697] (ftrace buffer empty) [ 25.524377] Kernel Offset: disabled [ 25.527975] Rebooting in 86400 seconds..