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 'ci-upstream-net-kasan-gce-2,10.128.0.54' (ECDSA) to the list of known hosts. 2017/08/25 06:43:21 parsed 1 programs 2017/08/25 06:43:21 executed programs: 0 syzkaller login: [ 42.963856] kasan: CONFIG_KASAN_INLINE enabled [ 42.964664] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.965938] general protection fault: 0000 [#1] SMP KASAN [ 42.966717] Dumping ftrace buffer: [ 42.967190] (ftrace buffer empty) [ 42.967685] Modules linked in: [ 42.968118] CPU: 0 PID: 3354 Comm: syz-executor4 Not tainted 4.13.0-rc6+ #22 [ 42.969103] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.970710] task: ffff8801cf462080 task.stack: ffff8801cfdd0000 [ 42.971591] RIP: 0010:SyS_bpf+0xd18/0x5160 [ 42.972178] RSP: 0018:ffff8801cfdd77c8 EFLAGS: 00010206 [ 42.972886] RAX: dffffc0000000000 RBX: 000000000000000f RCX: 0000000000000000 [ 42.973860] RDX: 0000000000000006 RSI: 0000000000000001 RDI: ffffffff84ee4498 [ 42.974839] RBP: ffff8801cfdd7f48 R08: 0000000000000001 R09: 0000000000000000 [ 42.975790] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff10039fbaf00 [ 42.976753] R13: ffffffff84eeb100 R14: 0000000000000000 R15: 0000000020fcafec [ 42.977770] FS: 00007ffae5e76700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 42.978844] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.979628] CR2: 00007ffd8e86fc08 CR3: 00000001d02e9000 CR4: 00000000001406f0 [ 42.980591] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.981543] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.982540] Call Trace: [ 42.982919] ? lock_downgrade+0x990/0x990 [ 42.983497] ? bpf_prog_get+0x20/0x20 [ 42.984012] ? find_held_lock+0x35/0x1d0 [ 42.988046] ? finish_task_switch+0x1d3/0x740 [ 42.992515] ? lock_downgrade+0x990/0x990 [ 42.996640] ? do_raw_spin_trylock+0x190/0x190 [ 43.001195] ? lock_release+0xa40/0xa40 [ 43.005138] ? compat_start_thread+0x80/0x80 [ 43.009518] ? _raw_spin_unlock_irq+0x27/0x70 [ 43.013981] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 43.018969] ? trace_hardirqs_on+0xd/0x10 [ 43.023083] ? _raw_spin_unlock_irq+0x27/0x70 [ 43.027545] ? finish_task_switch+0x1d3/0x740 [ 43.032014] ? finish_task_switch+0x1aa/0x740 [ 43.037269] ? preempt_notifier_dec+0x20/0x20 [ 43.041737] ? __schedule+0x8f0/0x2070 [ 43.045592] ? __sched_text_start+0x8/0x8 [ 43.049706] ? find_held_lock+0x35/0x1d0 [ 43.053739] ? vm_mmap_pgoff+0x1ed/0x280 [ 43.057765] ? lock_downgrade+0x990/0x990 [ 43.061889] ? __handle_mm_fault+0x577/0x3860 [ 43.066350] ? userfaultfd_unmap_complete+0x327/0x510 [ 43.071510] ? userfaultfd_unmap_prep+0x540/0x540 [ 43.076322] ? schedule+0x108/0x440 [ 43.079915] ? __schedule+0x2070/0x2070 [ 43.083854] ? up_write+0x6b/0x120 [ 43.087368] ? up_read+0x40/0x40 [ 43.090709] ? down_write+0x120/0x120 [ 43.094487] ? security_mmap_file+0x14e/0x190 [ 43.099302] ? vm_mmap_pgoff+0x1fc/0x280 [ 43.103330] ? exit_to_usermode_loop+0x98/0x300 [ 43.107974] ? trace_hardirqs_off+0xd/0x10 [ 43.112177] ? exit_to_usermode_loop+0x1a8/0x300 [ 43.116899] ? vma_is_stack_for_current+0xa0/0xa0 [ 43.121717] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 43.127226] ? syscall_return_slowpath+0x22f/0x450 [ 43.132129] ? prepare_exit_to_usermode+0x220/0x220 [ 43.137113] ? entry_SYSCALL_64_fastpath+0x5/0xbe [ 43.141928] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 43.146655] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 43.151379] RIP: 0033:0x4512e9 [ 43.154534] RSP: 002b:00007ffae5e75c08 EFLAGS: 00000216 ORIG_RAX: 0000000000000141 [ 43.162206] RAX: ffffffffffffffda RBX: 0000000000718000 RCX: 00000000004512e9 [ 43.169448] RDX: 0000000000000014 RSI: 0000000020fcafec RDI: 0000000000000000 [ 43.176688] RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 [ 43.184186] R10: 0000000000000000 R11: 0000000000000216 R12: 00000000004b70fc [ 43.192378] R13: 00000000ffffffff R14: 0000000020000000 R15: 0000000000fef000 [ 43.199622] Code: 00 0f 85 d4 43 00 00 49 8d 46 30 4e 8b 2c ed 20 44 ee 84 48 89 c2 48 89 85 b0 f8 ff ff 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 95 43 00 00 49 8d 7e 04 48 b8 00 00 00 00 00 [ 43.218685] RIP: SyS_bpf+0xd18/0x5160 RSP: ffff8801cfdd77c8 [ 43.224404] ---[ end trace b72c196ad887c4fa ]--- [ 43.229157] Kernel panic - not syncing: Fatal exception [ 43.234520] Dumping ftrace buffer: [ 43.238029] (ftrace buffer empty) [ 43.241706] Kernel Offset: disabled [ 43.245301] Rebooting in 86400 seconds..