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-mmots-kasan-gce-6,10.128.0.51' (ECDSA) to the list of known hosts. 2017/09/06 23:54:10 parsed 1 programs 2017/09/06 23:54:10 executed programs: 0 2017/09/06 23:54:15 executed programs: 1044 2017/09/06 23:54:20 executed programs: 2015 2017/09/06 23:54:25 executed programs: 2987 2017/09/06 23:54:30 executed programs: 3961 2017/09/06 23:54:35 executed programs: 4934 2017/09/06 23:54:40 executed programs: 5906 2017/09/06 23:54:45 executed programs: 6877 2017/09/06 23:54:50 executed programs: 7850 2017/09/06 23:54:55 executed programs: 8821 2017/09/06 23:55:00 executed programs: 9789 2017/09/06 23:55:05 executed programs: 10751 2017/09/06 23:55:10 executed programs: 11724 2017/09/06 23:55:15 executed programs: 12702 2017/09/06 23:55:20 executed programs: 13676 2017/09/06 23:55:25 executed programs: 14655 2017/09/06 23:55:31 executed programs: 15621 syzkaller login: [ 211.159334] kasan: CONFIG_KASAN_INLINE enabled [ 211.159379] ------------[ cut here ]------------ [ 211.159402] WARNING: CPU: 0 PID: 18039 at kernel/futex.c:818 get_pi_state+0x15b/0x190 [ 211.159408] Kernel panic - not syncing: panic_on_warn set ... [ 211.159408] [ 211.159416] CPU: 0 PID: 18039 Comm: syz-executor2 Not tainted 4.13.0-mm1+ #3 [ 211.159421] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 211.159425] Call Trace: [ 211.159437] dump_stack+0x194/0x257 [ 211.159451] ? arch_local_irq_restore+0x53/0x53 [ 211.159480] panic+0x1e4/0x417 [ 211.159489] ? __warn+0x1d9/0x1d9 [ 211.159497] ? show_regs_print_info+0x65/0x65 [ 211.159527] ? get_pi_state+0x15b/0x190 [ 211.159535] __warn+0x1c4/0x1d9 [ 211.159544] ? get_pi_state+0x15b/0x190 [ 211.159557] report_bug+0x211/0x2d0 [ 211.159575] fixup_bug+0x40/0x90 [ 211.159586] do_trap+0x260/0x390 [ 211.159606] do_error_trap+0x120/0x390 [ 211.159616] ? save_stack_trace+0x16/0x20 [ 211.159649] ? do_trap+0x390/0x390 [ 211.159660] ? get_pi_state+0x15b/0x190 [ 211.159668] ? find_held_lock+0x39/0x1d0 [ 211.159693] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 211.159712] do_invalid_op+0x1b/0x20 [ 211.159722] invalid_op+0x18/0x20 [ 211.159729] RIP: 0010:get_pi_state+0x15b/0x190 [ 211.159735] RSP: 0018:ffff8801c3177088 EFLAGS: 00010297 [ 211.159745] RAX: ffff8801d06502c0 RBX: 0000000000000000 RCX: 1ffff1003862ee16 [ 211.159751] RDX: 0000000000000000 RSI: 1ffff1003a0ca16f RDI: ffff8801d3caca00 [ 211.159757] RBP: ffff8801c3177118 R08: ffff8801d0651570 R09: 0000000000000000 [ 211.159762] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003862ee12 [ 211.159768] R13: ffff8801d3caca00 R14: 1ffff1003862ee16 R15: ffff8801d3cacac0 [ 211.159802] ? get_pi_state+0x15b/0x190 [ 211.159812] ? futex_wait_queue_me+0x7e0/0x7e0 [ 211.159828] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 211.159845] exit_pi_state_list+0x543/0x780 [ 211.159871] ? futex_wait_requeue_pi.constprop.19+0x1300/0x1300 [ 211.159885] ? lock_release+0xd70/0xd70 [ 211.159895] ? check_same_owner+0x320/0x320 [ 211.159905] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 211.159927] ? __might_sleep+0x95/0x190 [ 211.159945] ? __might_fault+0x188/0x1d0 [ 211.159964] ? do_raw_spin_trylock+0x190/0x190 [ 211.159979] mm_release+0x46d/0x590 [ 211.159986] ? do_raw_spin_trylock+0x190/0x190 [ 211.159995] ? mm_access+0x140/0x140 [ 211.160004] ? _raw_spin_unlock_irq+0x27/0x70 [ 211.160017] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 211.160028] ? trace_hardirqs_on+0xd/0x10 [ 211.160037] ? _raw_spin_unlock_irq+0x27/0x70 [ 211.160046] ? acct_collect+0x637/0x800 [ 211.160062] do_exit+0x481/0x1b40 [ 211.160071] ? unqueue_me_pi+0xc0/0xc0 [ 211.160085] ? lock_release+0xd70/0xd70 [ 211.160100] ? hrtimer_forward+0x2d0/0x2d0 [ 211.160110] ? do_raw_spin_trylock+0x190/0x190 [ 211.160120] ? mm_update_next_owner+0x930/0x930 [ 211.160140] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 211.160154] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 211.160165] ? trace_hardirqs_on+0xd/0x10 [ 211.160179] ? hrtimer_try_to_cancel+0x9a/0x5c0 [ 211.160198] ? do_raw_spin_trylock+0x190/0x190 [ 211.160208] ? fault_in_user_writeable+0x90/0x90 [ 211.160220] ? check_noncircular+0x20/0x20 [ 211.160237] ? fixup_pi_state_owner.isra.16+0x980/0x980 [ 211.160259] ? hrtimer_cancel+0x2e/0x40 [ 211.160270] ? futex_wait_requeue_pi.constprop.19+0x8a8/0x1300 [ 211.160287] ? find_held_lock+0x39/0x1d0 [ 211.160314] ? lock_downgrade+0x990/0x990 [ 211.160324] ? recalc_sigpending_tsk+0x117/0x150 [ 211.160337] ? recalc_sigpending+0x103/0x160 [ 211.160347] ? recalc_sigpending_tsk+0x150/0x150 [ 211.160354] ? get_signal+0x397/0x17e0 [ 211.160382] do_group_exit+0x149/0x400 [ 211.160392] ? __lock_is_held+0xbc/0x140 [ 211.160401] ? SyS_exit+0x30/0x30 [ 211.160409] ? _raw_spin_unlock_irq+0x27/0x70 [ 211.160422] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 211.160439] get_signal+0x7e8/0x17e0 [ 211.160494] ? ptrace_notify+0x130/0x130 [ 211.160531] ? exit_robust_list+0x240/0x240 [ 211.160548] ? lock_downgrade+0x990/0x990 [ 211.160555] ? SyS_brk+0x6f0/0x6f0 [ 211.160571] do_signal+0x94/0x1ee0 [ 211.160581] ? arch_get_unmapped_area+0x750/0x750 [ 211.160588] ? lock_acquire+0x1d5/0x580 [ 211.160605] ? find_held_lock+0x39/0x1d0 [ 211.160617] ? setup_sigcontext+0x7d0/0x7d0 [ 211.160642] ? lock_downgrade+0x990/0x990 [ 211.160670] ? down_write+0x120/0x120 [ 211.160684] ? lock_release+0xd70/0xd70 [ 211.160693] ? check_same_owner+0x320/0x320 [ 211.160705] ? exit_to_usermode_loop+0x98/0x300 [ 211.160726] exit_to_usermode_loop+0x224/0x300 [ 211.160741] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 211.160752] ? kasan_check_write+0x14/0x20 [ 211.160776] syscall_return_slowpath+0x42f/0x500 [ 211.160788] ? prepare_exit_to_usermode+0x2c0/0x2c0 [ 211.160800] ? entry_SYSCALL_64_fastpath+0x91/0xbe [ 211.160813] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 211.160823] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 211.160843] entry_SYSCALL_64_fastpath+0xbc/0xbe [ 211.160850] RIP: 0033:0x451e59 [ 211.160855] RSP: 002b:00007f5dabd9dc08 EFLAGS: 00000216 ORIG_RAX: 00000000000000ca [ 211.160865] RAX: 0000000000000000 RBX: 00000000007180b0 RCX: 0000000000451e59 [ 211.160871] RDX: 0000000000000004 RSI: 000080000000000b RDI: 000000002000cffc [ 211.160876] RBP: 00000000000008f0 R08: 0000000020048000 R09: 0000000000000000 [ 211.160881] R10: 000000002000b000 R11: 0000000000000216 R12: 00000000004b7593 [ 211.160887] R13: 00000000ffffffff R14: 000000002000cffc R15: 000080000000000b [ 211.675534] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 211.682866] general protection fault: 0000 [#1] SMP KASAN [ 211.688372] Dumping ftrace buffer: [ 211.691893] (ftrace buffer empty) [ 211.695572] Modules linked in: [ 211.698735] CPU: 1 PID: 18012 Comm: syz-executor2 Not tainted 4.13.0-mm1+ #3 [ 211.705886] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 211.715220] task: ffff8801d0fee400 task.stack: ffff8801c4270000 [ 211.721252] RIP: 0010:lock_release+0x233/0xd70 [ 211.725799] RSP: 0018:ffff8801c4276e20 EFLAGS: 00010002 [ 211.731132] RAX: dffffc0000000000 RBX: 1ffff1003884edc9 RCX: 1ffff1003a795941 [ 211.738370] RDX: 0000000000000101 RSI: 0000000000000001 RDI: 0000000000000808 [ 211.745609] RBP: ffff8801c4276fd0 R08: 1ffff1003a795941 R09: ffff8801c4276940 [ 211.752847] R10: ffff8801d0fee400 R11: 1ffff1003a1fdf13 R12: ffff8801c4276ea8 [ 211.760105] R13: ffff8801c4276fa8 R14: 00000000000007e8 R15: ffffffff85cc11e0 [ 211.767353] FS: 00007f5dabdbf700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 211.775546] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 211.781395] CR2: 000000002000d000 CR3: 00000001d395d000 CR4: 00000000001406e0 [ 211.788634] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 211.795885] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 211.803123] Call Trace: [ 211.805692] ? lock_downgrade+0x990/0x990 [ 211.809808] ? put_pi_state+0x252/0x520 [ 211.813749] ? lock_downgrade+0x990/0x990 [ 211.817868] ? lock_acquire+0x1d5/0x580 [ 211.821811] ? put_pi_state+0xe4/0x520 [ 211.825729] ? lock_release+0xd70/0xd70 [ 211.829669] ? rt_mutex_adjust_prio+0x146/0x1d0 [ 211.834304] ? rt_mutex_enqueue_pi+0x290/0x290 [ 211.838864] _raw_spin_unlock_irq+0x1a/0x70 [ 211.843153] put_pi_state+0x252/0x520 [ 211.846922] ? attach_to_pi_state+0x3a0/0x3a0 [ 211.851390] ? wake_up_q+0x8a/0xe0 [ 211.854900] ? rt_mutex_futex_unlock+0xc0/0x110 [ 211.859538] ? __rt_mutex_futex_unlock+0x1b0/0x1b0 [ 211.864575] exit_pi_state_list+0x55c/0x780 [ 211.868870] ? futex_wait_requeue_pi.constprop.19+0x1300/0x1300 [ 211.874896] ? lock_release+0xd70/0xd70 [ 211.878847] ? check_same_owner+0x320/0x320 [ 211.883136] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 211.888210] ? __might_sleep+0x95/0x190 [ 211.892166] ? __might_fault+0x188/0x1d0 [ 211.896197] ? do_raw_spin_trylock+0x190/0x190 [ 211.900750] mm_release+0x46d/0x590 [ 211.904344] ? do_raw_spin_trylock+0x190/0x190 [ 211.908894] ? mm_access+0x140/0x140 [ 211.912577] ? _raw_spin_unlock_irq+0x27/0x70 [ 211.917042] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 211.922027] ? trace_hardirqs_on+0xd/0x10 [ 211.926143] ? _raw_spin_unlock_irq+0x27/0x70 [ 211.930633] ? acct_collect+0x637/0x800 [ 211.934575] do_exit+0x481/0x1b40 [ 211.938004] ? plist_check_head+0xa0/0x130 [ 211.942215] ? do_raw_spin_trylock+0x190/0x190 [ 211.946765] ? mm_update_next_owner+0x930/0x930 [ 211.951407] ? check_same_owner+0x320/0x320 [ 211.955699] ? futex_wait_setup+0x14a/0x3d0 [ 211.959991] ? __might_sleep+0x95/0x190 [ 211.963937] ? check_noncircular+0x20/0x20 [ 211.968145] ? futex_wait_queue_me+0x524/0x7e0 [ 211.972696] ? refill_pi_state_cache.part.6+0x2f0/0x2f0 [ 211.978047] ? get_futex_value_locked+0xc3/0xf0 [ 211.982685] ? futex_wait_setup+0x22e/0x3d0 [ 211.986976] ? find_held_lock+0x39/0x1d0 [ 211.991008] ? lock_downgrade+0x990/0x990 [ 211.995123] ? recalc_sigpending_tsk+0x117/0x150 [ 211.999846] ? recalc_sigpending+0x103/0x160 [ 212.004224] ? recalc_sigpending_tsk+0x150/0x150 [ 212.008950] ? get_signal+0x397/0x17e0 [ 212.012807] do_group_exit+0x149/0x400 [ 212.016670] ? __lock_is_held+0xbc/0x140 [ 212.020701] ? SyS_exit+0x30/0x30 [ 212.024132] ? _raw_spin_unlock_irq+0x27/0x70 [ 212.028595] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 212.033580] get_signal+0x7e8/0x17e0 [ 212.037271] ? ptrace_notify+0x130/0x130 [ 212.041300] ? __schedule+0x8f0/0x2070 [ 212.045157] ? exit_robust_list+0x240/0x240 [ 212.049449] ? lock_downgrade+0x990/0x990 [ 212.053565] ? SyS_brk+0x6f0/0x6f0 [ 212.057083] do_signal+0x94/0x1ee0 [ 212.060608] ? arch_get_unmapped_area+0x750/0x750 [ 212.065421] ? lock_acquire+0x1d5/0x580 [ 212.069365] ? find_held_lock+0x39/0x1d0 [ 212.073396] ? setup_sigcontext+0x7d0/0x7d0 [ 212.077690] ? lock_downgrade+0x990/0x990 [ 212.081805] ? schedule+0x108/0x440 [ 212.085401] ? down_write+0x120/0x120 [ 212.089170] ? lock_release+0xd70/0xd70 [ 212.093115] ? check_same_owner+0x320/0x320 [ 212.097407] ? exit_to_usermode_loop+0x98/0x300 [ 212.102045] exit_to_usermode_loop+0x224/0x300 [ 212.106597] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 212.112108] ? kasan_check_write+0x14/0x20 [ 212.116315] syscall_return_slowpath+0x42f/0x500 [ 212.121038] ? prepare_exit_to_usermode+0x2c0/0x2c0 [ 212.126021] ? entry_SYSCALL_64_fastpath+0x91/0xbe [ 212.130919] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 212.135905] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 212.140635] entry_SYSCALL_64_fastpath+0xbc/0xbe [ 212.145451] RIP: 0033:0x451e59 [ 212.148610] RSP: 002b:00007f5dabdbecf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 212.156284] RAX: 0000000000000000 RBX: 0000000000718028 RCX: 0000000000451e59