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-next-kasan-gce-2,10.128.0.55' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.094610] kasan: CONFIG_KASAN_INLINE enabled [ 42.099291] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.106836] general protection fault: 0000 [#1] SMP KASAN [ 42.112342] Dumping ftrace buffer: [ 42.115847] (ftrace buffer empty) [ 42.119522] Modules linked in: [ 42.122681] CPU: 0 PID: 2983 Comm: syzkaller401111 Not tainted 4.13.0-rc7-next-20170901+ #13 [ 42.131217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.140538] task: ffff8801cf1da000 task.stack: ffff8801ce440000 [ 42.146565] RIP: 0010:perf_trace_block_get_rq+0x697/0x970 [ 42.152065] RSP: 0018:ffff8801ce4473f0 EFLAGS: 00010246 [ 42.157392] RAX: ffff8801cf1da000 RBX: 1ffff10039c88e84 RCX: 1ffffd1ffff84d27 [ 42.164628] RDX: dffffc0000000001 RSI: 1ffff1003b643e7a RDI: ffffe8ffffc26938 [ 42.171865] RBP: ffff8801ce447530 R08: 1ffff1003b643e6c R09: ffffe8ffffc26964 [ 42.179098] R10: 0000000000000002 R11: fffff91ffff84d2d R12: ffffe8ffffc1f890 [ 42.186333] R13: ffffe8ffffc26930 R14: ffffffff85cad9e0 R15: 0000000000000000 [ 42.193570] FS: 0000000002641880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 42.201762] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.207609] CR2: 000000000043e670 CR3: 00000001d1d7a000 CR4: 00000000001406f0 [ 42.214846] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.222080] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.229313] Call Trace: [ 42.231888] ? _raw_spin_unlock_irq+0x27/0x70 [ 42.236354] ? perf_trace_block_bio_queue+0x8f0/0x8f0 [ 42.241508] ? trace_hardirqs_on+0xd/0x10 [ 42.245617] ? _raw_spin_unlock_irq+0x27/0x70 [ 42.250076] ? cfq_set_request+0x6d5/0xce0 [ 42.254279] ? rcu_pm_notify+0xc0/0xc0 [ 42.258135] ? perf_trace_block_bio_queue+0x8f0/0x8f0 [ 42.263292] get_request+0x1518/0x23b0 [ 42.267142] ? get_request+0x1518/0x23b0 [ 42.271165] ? sg_ioctl+0x192d/0x2ed0 [ 42.274937] ? generic_make_request_checks+0x1cf0/0x1cf0 [ 42.280361] ? create_task_io_context+0x364/0x540 [ 42.285167] ? rcu_pm_notify+0xc0/0xc0 [ 42.289022] ? do_raw_spin_trylock+0x190/0x190 [ 42.293568] ? __raw_spin_lock_init+0x1c/0x100 [ 42.298118] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.303101] ? __lockdep_init_map+0xe4/0x650 [ 42.307479] ? lock_acquire+0x1d5/0x580 [ 42.311420] ? blk_get_request+0x1c8/0x3c0 [ 42.315625] ? __might_fault+0xe0/0x1d0 [ 42.319566] ? lock_release+0xd70/0xd70 [ 42.323506] ? lock_release+0xd70/0xd70 [ 42.327446] ? check_same_owner+0x320/0x320 [ 42.331737] ? finish_wait+0x490/0x490 [ 42.335595] blk_get_request+0x1d8/0x3c0 [ 42.339625] sg_scsi_ioctl+0x117/0x750 [ 42.343482] sg_ioctl+0x192d/0x2ed0 [ 42.347079] ? sg_new_write.isra.20+0x830/0x830 [ 42.351713] ? lock_release+0xd70/0xd70 [ 42.355654] ? is_bpf_text_address+0xa4/0x120 [ 42.360114] ? __kernel_text_address+0xae/0xe0 [ 42.364667] ? avc_has_perm+0x43e/0x680 [ 42.368609] ? avc_has_perm_noaudit+0x520/0x520 [ 42.373247] ? save_stack_trace+0x16/0x20 [ 42.377361] ? save_stack+0x43/0xd0 [ 42.380953] ? kasan_slab_free+0x71/0xc0 [ 42.384977] ? kmem_cache_free+0x77/0x280 [ 42.389087] ? putname+0xee/0x130 [ 42.392504] ? do_sys_open+0x31b/0x6d0 [ 42.396355] ? SyS_open+0x2d/0x40 [ 42.399772] ? entry_SYSCALL_64_fastpath+0x1f/0xbe [ 42.404674] ? __fd_install+0x2f7/0x6a0 [ 42.408615] ? file_has_perm+0x2c2/0x500 [ 42.412639] ? get_unused_fd_flags+0x190/0x190 [ 42.417185] ? selinux_capset+0x100/0x100 [ 42.421295] ? sg_new_write.isra.20+0x830/0x830 [ 42.425928] do_vfs_ioctl+0x1b1/0x1530 [ 42.429786] ? ioctl_preallocate+0x2b0/0x2b0 [ 42.434163] ? selinux_capable+0x40/0x40 [ 42.438189] ? putname+0xf3/0x130 [ 42.441612] ? do_sys_open+0x320/0x6d0 [ 42.445468] ? security_file_ioctl+0x7d/0xb0 [ 42.449850] ? security_file_ioctl+0x89/0xb0 [ 42.454233] SyS_ioctl+0x8f/0xc0 [ 42.457568] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 42.462290] RIP: 0033:0x443e59 [ 42.465448] RSP: 002b:00007ffd187a70b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 [ 42.473122] RAX: ffffffffffffffda RBX: 00000000006d4d80 RCX: 0000000000443e59 [ 42.480365] RDX: 0000000020001000 RSI: 0000000100000001 RDI: 0000000000000004 [ 42.487603] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 42.494846] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000020000 [ 42.502167] R13: 0000080000000000 R14: 0000000000000000 R15: 0000000000000000 [ 42.509410] Code: df 48 89 f9 48 c1 e9 03 0f b6 14 11 84 d2 74 09 80 fa 03 0f 8e e1 02 00 00 48 ba 01 00 00 00 00 fc ff df 41 c7 45 08 00 00 00 00 <80> 3a 00 0f 85 b7 02 00 00 4c 8b 3c 25 08 00 00 00 48 ba 00 00 [ 42.528488] RIP: perf_trace_block_get_rq+0x697/0x970 RSP: ffff8801ce4473f0 [ 42.535665] ---[ end trace 7548f150518d0a21 ]--- [ 42.540424] Kernel panic - not syncing: Fatal exception [ 42.546095] Dumping ftrace buffer: [ 42.549601] (ftrace buffer empty) [ 42.553277] Kernel Offset: disabled [ 42.556872] Rebooting in 86400 seconds..