2017/11/04 07:33:14 parsed 1 programs 2017/11/04 07:33:14 executed programs: 0 2017/11/04 07:33:19 executed programs: 489 2017/11/04 07:33:24 executed programs: 974 2017/11/04 07:33:29 executed programs: 1506 2017/11/04 07:33:34 executed programs: 2046 2017/11/04 07:33:39 executed programs: 2520 syzkaller login: [ 200.646093] ------------[ cut here ]------------ [ 200.646732] WARNING: CPU: 3 PID: 23104 at kernel/kthread.c:87 free_kthread_struct+0xa2/0xe0 [ 200.647899] Kernel panic - not syncing: panic_on_warn set ... [ 200.647899] [ 200.648808] CPU: 3 PID: 23104 Comm: modprobe Not tainted 4.14.0-rc7-next-20171103+ #10 [ 200.649813] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 200.650786] Call Trace: [ 200.651100] [ 200.651370] dump_stack+0x194/0x257 [ 200.651824] ? arch_local_irq_restore+0x53/0x53 [ 200.652405] ? vsnprintf+0x1ed/0x1900 [ 200.652875] panic+0x1e4/0x41c [ 200.653269] ? refcount_error_report+0x214/0x214 [ 200.654167] ? show_regs_print_info+0x65/0x65 [ 200.654767] ? __warn+0x1a9/0x1e0 [ 200.655212] ? free_kthread_struct+0xa2/0xe0 [ 200.655742] __warn+0x1c4/0x1e0 [ 200.656165] ? free_kthread_struct+0xa2/0xe0 [ 200.656728] report_bug+0x211/0x2d0 [ 200.657175] fixup_bug+0x40/0x90 [ 200.657633] do_trap+0x260/0x390 [ 200.658054] do_error_trap+0x120/0x390 [ 200.658521] ? save_stack+0xa3/0xd0 [ 200.658962] ? do_trap+0x390/0x390 [ 200.659394] ? free_kthread_struct+0xa2/0xe0 [ 200.659937] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 200.660521] do_invalid_op+0x1b/0x20 [ 200.660978] invalid_op+0x18/0x20 [ 200.661455] RIP: 0010:free_kthread_struct+0xa2/0xe0 [ 200.662164] RSP: 0018:ffff88006df07768 EFLAGS: 00010206 [ 200.662825] RAX: ffff88006d236080 RBX: ffff88006ab3b7c0 RCX: ffffffff814937d2 [ 200.663712] RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff88006ab3b948 [ 200.664646] RBP: ffff88006df07770 R08: ffffffff85f3b680 R09: 1ffff1000dbe0ed4 [ 200.665630] R10: ffff88006d236080 R11: 0000000000000002 R12: 1ffff1000dbe0ef0 [ 200.666574] R13: 1ffff1000dbe0ef4 R14: 0000000000000000 R15: ffff88006df077e0 [ 200.667488] ? free_kthread_struct+0xa2/0xe0 [ 200.668015] ? free_kthread_struct+0xa2/0xe0 [ 200.668568] free_task+0x134/0x1a0 [ 200.669002] ? arch_release_task_struct+0x10/0x10 [ 200.669658] ? atomic_notifier_call_chain+0xb9/0x140 [ 200.670294] __put_task_struct+0x229/0x3b0 [ 200.670819] ? free_task+0x1a0/0x1a0 [ 200.671296] delayed_put_task_struct+0xca/0x3d0 [ 200.671863] ? child_wait_callback+0x210/0x210 [ 200.672422] ? put_pid+0x183/0x1f0 [ 200.672823] ? task_active_pid_ns+0xd0/0xd0 [ 200.673405] ? free_pages+0x51/0x90 [ 200.673867] ? put_pid+0x1f0/0x1f0 [ 200.674349] ? child_wait_callback+0x210/0x210 [ 200.674923] rcu_process_callbacks+0xd74/0x17d0 [ 200.675516] ? rcu_gp_kthread+0x18e0/0x18e0 [ 200.676055] ? print_usage_bug+0x480/0x480 [ 200.676577] ? perf_trace_lock+0xd6/0x900 [ 200.677092] ? timerqueue_add+0x1e9/0x280 [ 200.677629] ? find_held_lock+0x39/0x1d0 [ 200.683079] ? check_noncircular+0x20/0x20 [ 200.683593] ? lock_downgrade+0x990/0x990 [ 200.684076] ? lock_acquire+0x1d5/0x580 [ 200.684560] ? clockevents_program_event+0x163/0x2e0 [ 200.685179] ? __lock_is_held+0xbc/0x140 [ 200.685587] __do_softirq+0x29d/0xbb2 [ 200.686087] ? __irqentry_text_end+0x4/0x4 [ 200.686511] ? do_raw_spin_trylock+0x190/0x190 [ 200.687072] ? do_timer+0x50/0x50 [ 200.687492] ? native_apic_msr_write+0x5c/0x80 [ 200.688063] ? kvm_clock_get_cycles+0x25/0x30 [ 200.688668] ? lapic_next_event+0x54/0x80 [ 200.689099] ? clockevents_program_event+0x108/0x2e0 [ 200.689570] ? tick_program_event+0x7f/0xd0 [ 200.689972] ? __lock_is_held+0xbc/0x140 [ 200.690392] irq_exit+0x1d3/0x210 [ 200.690698] smp_apic_timer_interrupt+0x16b/0x700 [ 200.691139] ? smp_reschedule_interrupt+0xe6/0x670 [ 200.691594] ? smp_call_function_single_interrupt+0x640/0x640 [ 200.692138] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 200.692619] apic_timer_interrupt+0x9d/0xb0 [ 200.692987] [ 200.693218] RIP: 0010:save_stack+0x72/0xd0 [ 200.693689] RSP: 0018:ffff88006a74f6c0 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff11 [ 200.694444] RAX: 000000000000000a RBX: 00000000014000c0 RCX: 000000000000000d [ 200.695148] RDX: ffffffff81268f46 RSI: ffff88006a74f6d8 RDI: ffffffff8508a340 [ 200.695858] RBP: ffff88006a74f8e0 R08: ffffffff85f3b680 R09: 1ffff1000d4e9e8f [ 200.696495] R10: ffff88006d236080 R11: 0000000000000001 R12: ffff880068756630 [ 200.697283] R13: 00000000014000c0 R14: ffff880068756630 R15: ffff88006d831c40 [ 200.702761] ? SyS_mmap+0x16/0x20 [ 200.703198] ? __entry_text_end+0x7/0x7 [ 200.703695] ? save_stack+0x43/0xd0 [ 200.704145] ? kasan_kmalloc+0xad/0xe0 [ 200.704619] ? kasan_slab_alloc+0x12/0x20 [ 200.705077] ? kmem_cache_alloc+0x12e/0x760 [ 200.705673] ? __split_vma+0x1b7/0x8c0 [ 200.706131] ? do_munmap+0xb54/0xdf0 [ 200.706573] ? mmap_region+0x59e/0x15a0 [ 200.707055] ? do_mmap+0x6a1/0xd50 [ 200.707490] ? vm_mmap_pgoff+0x1de/0x280 [ 200.707892] ? SyS_mmap_pgoff+0x462/0x5f0 [ 200.708362] ? SyS_mmap+0x16/0x20 [ 200.708789] ? entry_SYSCALL_64_fastpath+0x1f/0xbe [ 200.709461] ? lock_downgrade+0x990/0x990 [ 200.709959] ? kmem_cache_alloc+0x4a2/0x760 [ 200.710496] ? do_raw_spin_trylock+0x190/0x190 [ 200.710928] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 200.711647] ? kasan_unpoison_shadow+0x35/0x50 [ 200.712212] kasan_kmalloc+0xad/0xe0 [ 200.712612] kasan_slab_alloc+0x12/0x20 [ 200.713059] kmem_cache_alloc+0x12e/0x760 [ 200.713596] __split_vma+0x1b7/0x8c0 [ 200.714058] ? find_vma_prev+0x140/0x140 [ 200.714483] ? vmacache_find+0x5f/0x280 [ 200.714974] ? find_vma+0x30/0x150 [ 200.715417] do_munmap+0xb54/0xdf0 [ 200.715864] mmap_region+0x59e/0x15a0 [ 200.716324] ? SyS_brk+0x6f0/0x6f0 [ 200.716750] ? arch_get_unmapped_area+0x750/0x750 [ 200.717362] ? lock_acquire+0x1d5/0x580 [ 200.717855] ? vm_mmap_pgoff+0x198/0x280 [ 200.718637] ? selinux_mmap_addr+0x1f/0xf0 [ 200.719159] ? security_mmap_addr+0x79/0xa0 [ 200.719687] ? get_unmapped_area+0x265/0x300 [ 200.720227] do_mmap+0x6a1/0xd50 [ 200.720644] ? mmap_region+0x15a0/0x15a0 [ 200.721124] ? vm_mmap_pgoff+0x198/0x280 [ 200.723095] ? down_read_killable+0x180/0x180 [ 200.723714] ? security_mmap_file+0x143/0x180 [ 200.724338] vm_mmap_pgoff+0x1de/0x280 [ 200.724892] ? vma_is_stack_for_current+0xa0/0xa0 [ 200.725551] ? up_read+0x40/0x40 [ 200.725980] SyS_mmap_pgoff+0x462/0x5f0 [ 200.726462] ? find_mergeable_anon_vma+0xd0/0xd0 [ 200.727039] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 200.727636] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 200.728280] SyS_mmap+0x16/0x20 [ 200.728673] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 200.729227] RIP: 0033:0x7ff1cb11d3ea [ 200.729676] RSP: 002b:00007ffc593c4c88 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 200.730591] RAX: ffffffffffffffda RBX: 00007ff1cb3259a8 RCX: 00007ff1cb11d3ea [ 200.731445] RDX: 0000000000000003 RSI: 0000000000005000 RDI: 00007ff1caee7000 [ 200.732309] RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000183000 [ 200.733183] R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffc593c50f8 [ 200.734114] R13: 000000006fffff48 R14: 00007ffc593c4df0 R15: 00007ffc593c4d90 [ 200.735236] Dumping ftrace buffer: [ 200.735752] (ftrace buffer empty) [ 200.736204] Kernel Offset: disabled [ 200.736654] Rebooting in 86400 seconds..