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-kasan-gce-386-3,10.128.0.19' (ECDSA) to the list of known hosts. 2017/09/21 06:46:24 parsed 1 programs 2017/09/21 06:46:24 executed programs: 0 2017/09/21 06:46:29 executed programs: 1088 2017/09/21 06:46:34 executed programs: 2089 2017/09/21 06:46:39 executed programs: 3088 2017/09/21 06:46:44 executed programs: 4099 2017/09/21 06:46:49 executed programs: 5119 2017/09/21 06:46:54 executed programs: 6135 2017/09/21 06:46:59 executed programs: 7150 2017/09/21 06:47:04 executed programs: 8166 2017/09/21 06:47:09 executed programs: 9181 2017/09/21 06:47:14 executed programs: 10188 2017/09/21 06:47:19 executed programs: 11204 2017/09/21 06:47:24 executed programs: 12223 2017/09/21 06:47:29 executed programs: 13227 2017/09/21 06:47:34 executed programs: 14234 2017/09/21 06:47:39 executed programs: 15242 2017/09/21 06:47:44 executed programs: 16257 2017/09/21 06:47:49 executed programs: 17276 2017/09/21 06:47:54 executed programs: 18283 2017/09/21 06:47:59 executed programs: 19299 2017/09/21 06:48:04 executed programs: 20307 2017/09/21 06:48:09 executed programs: 21326 2017/09/21 06:48:14 executed programs: 22341 2017/09/21 06:48:19 executed programs: 23352 2017/09/21 06:48:24 executed programs: 24346 2017/09/21 06:48:29 executed programs: 25347 2017/09/21 06:48:34 executed programs: 26357 2017/09/21 06:48:39 executed programs: 27367 2017/09/21 06:48:44 executed programs: 28384 2017/09/21 06:48:49 executed programs: 29402 2017/09/21 06:48:54 executed programs: 30409 2017/09/21 06:48:59 executed programs: 31419 2017/09/21 06:49:04 executed programs: 32431 2017/09/21 06:49:09 executed programs: 33447 2017/09/21 06:49:14 executed programs: 34457 2017/09/21 06:49:19 executed programs: 35457 2017/09/21 06:49:24 executed programs: 36464 2017/09/21 06:49:29 executed programs: 37473 2017/09/21 06:49:34 executed programs: 38484 2017/09/21 06:49:39 executed programs: 39505 2017/09/21 06:49:44 executed programs: 40525 2017/09/21 06:49:49 executed programs: 41545 2017/09/21 06:49:54 executed programs: 42567 2017/09/21 06:49:59 executed programs: 43585 2017/09/21 06:50:04 executed programs: 44600 2017/09/21 06:50:09 executed programs: 45619 2017/09/21 06:50:14 executed programs: 46640 2017/09/21 06:50:19 executed programs: 47652 2017/09/21 06:50:24 executed programs: 48658 2017/09/21 06:50:29 executed programs: 49669 2017/09/21 06:50:34 executed programs: 50686 2017/09/21 06:50:39 executed programs: 51707 2017/09/21 06:50:44 executed programs: 52719 2017/09/21 06:50:49 executed programs: 53723 2017/09/21 06:50:54 executed programs: 54732 2017/09/21 06:50:59 executed programs: 55743 2017/09/21 06:51:04 executed programs: 56744 2017/09/21 06:51:09 executed programs: 57743 2017/09/21 06:51:14 executed programs: 58751 2017/09/21 06:51:19 executed programs: 59754 2017/09/21 06:51:24 executed programs: 60766 2017/09/21 06:51:29 executed programs: 61779 2017/09/21 06:51:34 executed programs: 62785 2017/09/21 06:51:39 executed programs: 63788 2017/09/21 06:51:44 executed programs: 64795 2017/09/21 06:51:49 executed programs: 65794 2017/09/21 06:51:54 executed programs: 66803 2017/09/21 06:51:59 executed programs: 67806 2017/09/21 06:52:04 executed programs: 68816 syzkaller login: [ 1194.346164] kasan: CONFIG_KASAN_INLINE enabled [ 1194.346228] ------------[ cut here ]------------ [ 1194.346250] WARNING: CPU: 0 PID: 29856 at kernel/futex.c:818 get_pi_state+0x15b/0x190 [ 1194.346256] Kernel panic - not syncing: panic_on_warn set ... [ 1194.346256] [ 1194.346265] CPU: 0 PID: 29856 Comm: syz-executor3 Not tainted 4.14.0-rc1+ #3 [ 1194.346271] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1194.346275] Call Trace: [ 1194.346286] dump_stack+0x194/0x257 [ 1194.346301] ? arch_local_irq_restore+0x53/0x53 [ 1194.346329] panic+0x1e4/0x417 [ 1194.346339] ? __warn+0x1d9/0x1d9 [ 1194.346347] ? show_regs_print_info+0x65/0x65 [ 1194.346377] ? get_pi_state+0x15b/0x190 [ 1194.346385] __warn+0x1c4/0x1d9 [ 1194.346400] ? get_pi_state+0x15b/0x190 [ 1194.346413] report_bug+0x211/0x2d0 [ 1194.346433] fixup_bug+0x40/0x90 [ 1194.346444] do_trap+0x260/0x390 [ 1194.346465] do_error_trap+0x120/0x390 [ 1194.346481] ? do_trap+0x390/0x390 [ 1194.346492] ? get_pi_state+0x15b/0x190 [ 1194.346500] ? find_held_lock+0x39/0x1d0 [ 1194.346524] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1194.346543] do_invalid_op+0x1b/0x20 [ 1194.346555] invalid_op+0x18/0x20 [ 1194.346562] RIP: 0010:get_pi_state+0x15b/0x190 [ 1194.346567] RSP: 0018:ffff8801c7b9efd8 EFLAGS: 00010297 [ 1194.346578] RAX: ffff8801c8630480 RBX: 0000000000000000 RCX: 1ffff10038f73e00 [ 1194.346584] RDX: 0000000000000000 RSI: 1ffff100390c61a7 RDI: ffff8801cace3d40 [ 1194.346590] RBP: ffff8801c7b9f068 R08: ffff8801c8631730 R09: 0000000000000000 [ 1194.346595] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff10038f73dfc [ 1194.346601] R13: ffff8801cace3d40 R14: 1ffff10038f73e00 R15: ffff8801cace3e00 [ 1194.346634] ? get_pi_state+0x15b/0x190 [ 1194.346645] ? futex_wait_queue_me+0x7e0/0x7e0 [ 1194.346660] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 1194.346678] exit_pi_state_list+0x543/0x780 [ 1194.346704] ? futex_wait_requeue_pi.constprop.19+0x1300/0x1300 [ 1194.346717] ? lock_release+0xd70/0xd70 [ 1194.346726] ? check_same_owner+0x320/0x320 [ 1194.346738] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 1194.346758] ? __might_sleep+0x95/0x190 [ 1194.346776] ? __might_fault+0x188/0x1d0 [ 1194.346796] ? do_raw_spin_trylock+0x190/0x190 [ 1194.346810] mm_release+0x46d/0x590 [ 1194.346817] ? do_raw_spin_trylock+0x190/0x190 [ 1194.346827] ? mm_access+0x140/0x140 [ 1194.346836] ? _raw_spin_unlock_irq+0x27/0x70 [ 1194.346849] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 1194.346860] ? trace_hardirqs_on+0xd/0x10 [ 1194.346869] ? _raw_spin_unlock_irq+0x27/0x70 [ 1194.346879] ? acct_collect+0x637/0x800 [ 1194.346895] do_exit+0x481/0x1b40 [ 1194.346906] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 1194.346918] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 1194.346930] ? trace_hardirqs_on+0xd/0x10 [ 1194.346944] ? __hrtimer_get_remaining+0x1a0/0x1c0 [ 1194.346951] ? lock_acquire+0x1d5/0x580 [ 1194.346962] ? mm_update_next_owner+0x930/0x930 [ 1194.346971] ? __hrtimer_get_remaining+0x1c0/0x1c0 [ 1194.346981] ? do_raw_spin_trylock+0x190/0x190 [ 1194.346991] ? fault_in_user_writeable+0x90/0x90 [ 1194.347017] ? fixup_pi_state_owner.isra.16+0x980/0x980 [ 1194.347038] ? hrtimer_cancel+0x2e/0x40 [ 1194.347050] ? futex_wait_requeue_pi.constprop.19+0x8a8/0x1300 [ 1194.347062] ? check_noncircular+0x20/0x20 [ 1194.347076] ? futex_requeue+0x2370/0x2370 [ 1194.347085] ? futex_wake+0x680/0x680 [ 1194.347095] ? check_noncircular+0x20/0x20 [ 1194.347106] ? rcu_read_lock_sched_held+0x108/0x120 [ 1194.347119] ? drop_futex_key_refs.isra.13+0x63/0xb0 [ 1194.347129] ? futex_wait+0x6cf/0xa00 [ 1194.347145] ? find_held_lock+0x39/0x1d0 [ 1194.347172] ? lock_downgrade+0x990/0x990 [ 1194.347182] ? recalc_sigpending_tsk+0x117/0x150 [ 1194.347195] ? recalc_sigpending+0x103/0x160 [ 1194.347206] ? recalc_sigpending_tsk+0x150/0x150 [ 1194.347213] ? get_signal+0x397/0x17e0 [ 1194.347240] do_group_exit+0x149/0x400 [ 1194.347250] ? __lock_is_held+0xbc/0x140 [ 1194.347259] ? SyS_exit+0x30/0x30 [ 1194.347268] ? _raw_spin_unlock_irq+0x27/0x70 [ 1194.347281] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 1194.347298] get_signal+0x7e8/0x17e0 [ 1194.347353] ? ptrace_notify+0x130/0x130 [ 1194.347364] ? rwsem_wake+0x313/0x520 [ 1194.347371] ? SyS_brk+0x6f0/0x6f0 [ 1194.347385] ? __rwsem_mark_wake.constprop.4+0xe0/0xe0 [ 1194.347402] ? arch_get_unmapped_area+0x750/0x750 [ 1194.347409] ? lock_acquire+0x1d5/0x580 [ 1194.347445] do_signal+0x94/0x1ee0 [ 1194.347456] ? call_rwsem_wake+0x1b/0x30 [ 1194.347468] ? vma_compute_subtree_gap+0x200/0x200 [ 1194.347480] ? up_write+0xd8/0x120 [ 1194.347493] ? setup_sigcontext+0x7d0/0x7d0 [ 1194.347500] ? down_write+0x120/0x120 [ 1194.347511] ? security_mmap_file+0x14e/0x190 [ 1194.347529] ? vm_mmap_pgoff+0x1fc/0x280 [ 1194.347539] ? vm_mmap_pgoff+0x13b/0x280 [ 1194.347559] ? vma_is_stack_for_current+0xa0/0xa0 [ 1194.347572] ? __compat_get_timespec+0xd9/0x120 [ 1194.347590] ? exit_to_usermode_loop+0x98/0x300 [ 1194.347610] exit_to_usermode_loop+0x224/0x300 [ 1194.347626] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 1194.347633] ? lock_acquire+0x1d5/0x580 [ 1194.347644] ? do_fast_syscall_32+0x158/0xeed [ 1194.347665] do_fast_syscall_32+0x83e/0xeed [ 1194.347675] ? compat_start_thread+0x80/0x80 [ 1194.347692] ? do_int80_syscall_32+0x930/0x930 [ 1194.347708] ? lockdep_sys_exit+0x47/0xf0 [ 1194.347718] ? syscall_return_slowpath+0x2b3/0x500 [ 1194.347726] ? finish_task_switch+0x1aa/0x740 [ 1194.347737] ? prepare_exit_to_usermode+0x2c0/0x2c0 [ 1194.347750] ? sysret32_from_system_call+0x5/0x3b [ 1194.347767] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1194.347788] entry_SYSENTER_compat+0x51/0x60 [ 1194.347796] RIP: 0023:0xf7f93c79 [ 1194.347801] RSP: 002b:00000000f7f6e05c EFLAGS: 00000296 ORIG_RAX: 00000000000000f0 [ 1194.347811] RAX: 0000000000000000 RBX: 000000002000cffc RCX: 000000000000000b [ 1194.347816] RDX: 0000000000000004 RSI: 000000002000b000 RDI: 0000000020048000 [ 1194.347821] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 1194.347826] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 1194.347832] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1194.915357] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 1194.922686] general protection fault: 0000 [#1] SMP KASAN [ 1194.928191] Dumping ftrace buffer: [ 1194.931695] (ftrace buffer empty) [ 1194.935374] Modules linked in: [ 1194.938537] CPU: 1 PID: 29835 Comm: syz-executor3 Not tainted 4.14.0-rc1+ #3 [ 1194.945688] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1194.955009] task: ffff8801c6f0c580 task.stack: ffff8801d1ba0000 [ 1194.961035] RIP: 0010:lock_release+0x233/0xd70 [ 1194.965579] RSP: 0018:ffff8801d1ba6d70 EFLAGS: 00010002 [ 1194.970906] RAX: dffffc0000000000 RBX: 1ffff1003a374db3 RCX: 1ffff1003959c7a9 [ 1194.978141] RDX: 0000000000000101 RSI: 0000000000000001 RDI: 0000000000000808 [ 1194.985377] RBP: ffff8801d1ba6f20 R08: 1ffff1003959c7a9 R09: ffff8801d1ba6890 [ 1194.992616] R10: ffff8801c6f0c580 R11: 1ffff10038de1b43 R12: ffff8801d1ba6df8 [ 1194.999854] R13: ffff8801d1ba6ef8 R14: 00000000000007e8 R15: ffffffff85cc2440 [ 1195.007092] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f7f8fb40 [ 1195.015283] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 1195.021132] CR2: 0000000020048000 CR3: 00000001d0664000 CR4: 00000000001406e0 [ 1195.028371] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1195.035607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1195.042842] Call Trace: [ 1195.045397] ? lock_downgrade+0x990/0x990 [ 1195.049514] ? put_pi_state+0x252/0x520 [ 1195.053453] ? lock_downgrade+0x990/0x990 [ 1195.057569] ? lock_acquire+0x1d5/0x580 [ 1195.061508] ? put_pi_state+0xe4/0x520 [ 1195.065365] ? lock_release+0xd70/0xd70 [ 1195.069303] ? rt_mutex_adjust_prio+0x146/0x1d0 [ 1195.073940] ? retint_kernel+0x10/0x10 [ 1195.077793] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 1195.082777] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1195.087499] _raw_spin_unlock_irq+0x1a/0x70 [ 1195.091785] put_pi_state+0x252/0x520 [ 1195.095551] ? attach_to_pi_state+0x3a0/0x3a0 [ 1195.100014] ? wake_up_q+0x8a/0xe0 [ 1195.103519] ? rt_mutex_futex_unlock+0xc0/0x110 [ 1195.108154] ? __rt_mutex_futex_unlock+0x1b0/0x1b0 [ 1195.113050] exit_pi_state_list+0x55c/0x780 [ 1195.117341] ? futex_wait_requeue_pi.constprop.19+0x1300/0x1300 [ 1195.123364] ? lock_release+0xd70/0xd70 [ 1195.127305] ? check_same_owner+0x320/0x320 [ 1195.131592] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 1195.136662] ? __might_sleep+0x95/0x190 [ 1195.140603] ? __might_fault+0x188/0x1d0 [ 1195.144632] ? do_raw_spin_trylock+0x190/0x190 [ 1195.149180] mm_release+0x46d/0x590 [ 1195.152775] ? do_raw_spin_trylock+0x190/0x190 [ 1195.157325] ? mm_access+0x140/0x140 [ 1195.161004] ? _raw_spin_unlock_irq+0x27/0x70 [ 1195.165468] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 1195.170449] ? trace_hardirqs_on+0xd/0x10 [ 1195.174562] ? _raw_spin_unlock_irq+0x27/0x70 [ 1195.179021] ? acct_collect+0x637/0x800 [ 1195.182963] do_exit+0x481/0x1b40 [ 1195.186387] ? check_same_owner+0x320/0x320 [ 1195.190678] ? mm_update_next_owner+0x930/0x930 [ 1195.195311] ? find_held_lock+0x39/0x1d0 [ 1195.199341] ? lock_downgrade+0x990/0x990 [ 1195.203454] ? refill_pi_state_cache.part.6+0x2f0/0x2f0 [ 1195.208783] ? futex_wait+0x3e9/0xa00 [ 1195.212553] ? check_noncircular+0x20/0x20 [ 1195.216753] ? fault_in_user_writeable+0x90/0x90 [ 1195.221477] ? futex_wake+0x680/0x680 [ 1195.225244] ? __unqueue_futex+0x1c0/0x290 [ 1195.229447] ? drop_futex_key_refs.isra.13+0x63/0xb0 [ 1195.234517] ? futex_wait+0x6cf/0xa00 [ 1195.238285] ? find_held_lock+0x39/0x1d0 [ 1195.242316] ? lock_downgrade+0x990/0x990 [ 1195.246431] ? recalc_sigpending_tsk+0x117/0x150 [ 1195.251151] ? recalc_sigpending+0x103/0x160 [ 1195.255524] ? recalc_sigpending_tsk+0x150/0x150 [ 1195.260244] ? get_signal+0x397/0x17e0 [ 1195.264102] do_group_exit+0x149/0x400 [ 1195.267957] ? __lock_is_held+0xbc/0x140 [ 1195.271986] ? SyS_exit+0x30/0x30 [ 1195.275404] ? _raw_spin_unlock_irq+0x27/0x70 [ 1195.279868] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 1195.284851] get_signal+0x7e8/0x17e0 [ 1195.288540] ? ptrace_notify+0x130/0x130 [ 1195.292565] ? lock_downgrade+0x990/0x990 [ 1195.296680] ? SyS_brk+0x6f0/0x6f0 [ 1195.300187] ? arch_get_unmapped_area+0x750/0x750 [ 1195.304994] ? lock_acquire+0x1d5/0x580 [ 1195.308935] ? vm_mmap_pgoff+0x198/0x280 [ 1195.312968] do_signal+0x94/0x1ee0 [ 1195.316473] ? do_mmap+0x34f/0xd50 [ 1195.319980] ? up_write+0x6b/0x120 [ 1195.323503] ? setup_sigcontext+0x7d0/0x7d0 [ 1195.327788] ? down_write+0x120/0x120 [ 1195.331555] ? security_mmap_file+0x14e/0x190 [ 1195.336018] ? vm_mmap_pgoff+0x1fc/0x280 [ 1195.340046] ? vm_mmap_pgoff+0x13b/0x280 [ 1195.344078] ? vma_is_stack_for_current+0xa0/0xa0