2017/10/26 08:56:36 parsed 1 programs 2017/10/26 08:56:36 executed programs: 0 2017/10/26 08:56:41 executed programs: 569 syzkaller login: [ 41.204442] ------------[ cut here ]------------ [ 41.204843] WARNING: CPU: 1 PID: 6625 at kernel/futex.c:818 get_pi_state+0x15b/0x190 [ 41.205418] Kernel panic - not syncing: panic_on_warn set ... [ 41.205418] [ 41.205995] CPU: 1 PID: 6625 Comm: syz-executor6 Not tainted 4.14.0-rc5-next-20171018+ #8 [ 41.206789] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 41.207541] Call Trace: [ 41.207727] dump_stack+0x194/0x257 [ 41.208000] ? arch_local_irq_restore+0x53/0x53 [ 41.208482] ? vsnprintf+0x1ed/0x1900 [ 41.208793] panic+0x1e4/0x41c [ 41.209086] ? refcount_error_report+0x214/0x214 [ 41.209445] ? show_regs_print_info+0x65/0x65 [ 41.209808] ? __warn+0x1a9/0x1e0 [ 41.210096] ? get_pi_state+0x15b/0x190 [ 41.210375] __warn+0x1c4/0x1e0 [ 41.210606] ? get_pi_state+0x15b/0x190 [ 41.210920] report_bug+0x211/0x2d0 [ 41.211204] fixup_bug+0x40/0x90 [ 41.211446] do_trap+0x260/0x390 [ 41.211688] do_error_trap+0x120/0x390 [ 41.211977] ? do_trap+0x390/0x390 [ 41.212266] ? get_pi_state+0x15b/0x190 [ 41.212544] ? check_noncircular+0x20/0x20 [ 41.212861] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.213238] do_invalid_op+0x1b/0x20 [ 41.213499] invalid_op+0x18/0x20 [ 41.213742] RIP: 0010:get_pi_state+0x15b/0x190 [ 41.214085] RSP: 0018:ffff8800694c71a0 EFLAGS: 00010093 [ 41.214478] RAX: ffff88006805e1c0 RBX: 0000000000000000 RCX: ffffffff8162b8db [ 41.214996] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8800692c0300 [ 41.215542] RBP: ffff8800694c7230 R08: 0000000000000001 R09: 1ffff1000d298e26 [ 41.216061] R10: ffff8800694c70f8 R11: 0000000000000002 R12: 1ffff1000d298e35 [ 41.216578] R13: ffff8800692c0300 R14: 1ffff1000d298e39 R15: ffff8800692c03b0 [ 41.217109] ? get_pi_state+0x15b/0x190 [ 41.217431] ? futex_wait_queue_me+0x7e0/0x7e0 [ 41.217825] ? do_raw_spin_lock+0x151/0x1e0 [ 41.218143] exit_pi_state_list+0x556/0x7a0 [ 41.218471] ? futex_wait_requeue_pi.constprop.19+0x1300/0x1300 [ 41.218938] ? lock_release+0xa40/0xa40 [ 41.219258] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 41.219777] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 41.220296] ? __might_sleep+0x95/0x190 [ 41.220691] ? __might_fault+0x188/0x1d0 [ 41.221109] ? do_raw_spin_trylock+0x190/0x190 [ 41.221575] mm_release+0x46d/0x590 [ 41.221926] ? acct_collect+0xe9/0x800 [ 41.222272] ? mm_access+0x140/0x140 [ 41.223036] ? _raw_spin_unlock_irq+0x27/0x70 [ 41.223357] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 41.223755] ? trace_hardirqs_on+0xd/0x10 [ 41.224096] ? _raw_spin_unlock_irq+0x27/0x70 [ 41.224407] ? acct_collect+0x637/0x800 [ 41.224703] do_exit+0x481/0x1ad0 [ 41.224960] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 41.225345] ? trace_hardirqs_on_caller+0x3d1/0x5c0 [ 41.225699] ? mm_update_next_owner+0x930/0x930 [ 41.226045] ? trace_hardirqs_on+0xd/0x10 [ 41.226359] ? hrtimer_try_to_cancel+0x9a/0x5c0 [ 41.226688] ? __hrtimer_get_remaining+0x1c0/0x1c0 [ 41.227057] ? do_raw_spin_trylock+0x190/0x190 [ 41.227402] ? fault_in_user_writeable+0x90/0x90 [ 41.227740] ? fixup_pi_state_owner.isra.16+0x980/0x980 [ 41.228144] ? hrtimer_cancel+0x2e/0x40 [ 41.228443] ? futex_wait_requeue_pi.constprop.19+0x8a8/0x1300 [ 41.228859] ? check_noncircular+0x20/0x20 [ 41.229178] ? futex_requeue+0x2370/0x2370 [ 41.229500] ? __lock_acquire+0x6aa/0x3d50 [ 41.229795] ? drop_futex_key_refs.isra.13+0x63/0xa0 [ 41.230168] ? futex_wait+0x69e/0x990 [ 41.230464] ? find_held_lock+0x35/0x1d0 [ 41.230794] ? get_signal+0x7ae/0x16d0 [ 41.231144] ? lock_downgrade+0x990/0x990 [ 41.231455] do_group_exit+0x149/0x400 [ 41.231765] ? __lock_is_held+0xb6/0x140 [ 41.232058] ? SyS_exit+0x30/0x30 [ 41.232391] ? _raw_spin_unlock_irq+0x27/0x70 [ 41.232733] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 41.233098] get_signal+0x73f/0x16d0 [ 41.233386] ? ptrace_notify+0x130/0x130 [ 41.233677] ? is_bpf_text_address+0xa4/0x120 [ 41.233992] ? kernel_text_address+0x102/0x140 [ 41.234316] ? exit_robust_list+0x240/0x240 [ 41.234622] ? __fget+0x333/0x570 [ 41.234877] do_signal+0x94/0x1ee0 [ 41.235127] ? lock_release+0xa40/0xa40 [ 41.235412] ? should_fail+0x23b/0xa40 [ 41.235688] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 41.236046] ? setup_sigcontext+0x7d0/0x7d0 [ 41.236352] ? find_held_lock+0x35/0x1d0 [ 41.236643] ? lock_downgrade+0x990/0x990 [ 41.236952] ? lock_release+0xa40/0xa40 [ 41.237255] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 41.237740] ? exit_to_usermode_loop+0x8c/0x310 [ 41.238139] exit_to_usermode_loop+0x214/0x310 [ 41.238468] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 41.238918] ? kasan_check_write+0x14/0x20 [ 41.239245] syscall_return_slowpath+0x42f/0x510 [ 41.239615] ? prepare_exit_to_usermode+0x2d0/0x2d0 [ 41.239992] ? entry_SYSCALL_64_fastpath+0x91/0xbe [ 41.240340] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 41.240693] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 41.241030] entry_SYSCALL_64_fastpath+0xbc/0xbe [ 41.241362] RIP: 0033:0x447c89 [ 41.241587] RSP: 002b:00007fb883929bd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 41.242211] RAX: 0000000000000000 RBX: 00007fb88392a6cc RCX: 0000000000447c89 [ 41.242863] RDX: 0000000000000004 RSI: 000080000000000b RDI: 000000002000cffc [ 41.243592] RBP: 00000000007480d8 R08: 0000000020048000 R09: 0000000000000000 [ 41.244320] R10: 000000002000b000 R11: 0000000000000246 R12: 00000000ffffffff [ 41.245426] R13: 0000000000000d08 R14: 00000000006e4da8 R15: 00007fb88392a700 [ 41.246013] Dumping ftrace buffer: [ 41.246271] (ftrace buffer empty) [ 41.246494] Kernel Offset: disabled [ 41.246714] Rebooting in 86400 seconds..