Debian GNU/Linux 7 syzkaller ttyS0 2017/10/25 13:24:29 parsed 1 programs 2017/10/25 13:24:29 executed programs: 0 syzkaller login: [ 17.743100] kasan: CONFIG_KASAN_INLINE enabled [ 17.743580] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 17.744415] general protection fault: 0000 [#1] SMP KASAN [ 17.744914] Dumping ftrace buffer: [ 17.745236] (ftrace buffer empty) [ 17.745578] Modules linked in: [ 17.745871] CPU: 0 PID: 3117 Comm: kworker/0:3 Not tainted 4.14.0-rc5-next-20171018+ #8 [ 17.751188] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 17.751925] Workqueue: kvm-irqfd-cleanup irqfd_shutdown [ 17.752448] task: ffff88003d1ca240 task.stack: ffff88003a090000 [ 17.752998] RIP: 0010:__list_del_entry_valid+0x7e/0x150 [ 17.753461] RSP: 0018:ffff88003a097390 EFLAGS: 00010046 [ 17.753925] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: dffffc0000000000 [ 17.759108] RDX: 0000000000000000 RSI: ffff88003b00ece0 RDI: ffff88003b00ece8 [ 17.759759] RBP: ffff88003a0973a8 R08: ffffffff81bf589d R09: 000000000000000c [ 17.760401] R10: ffff88003a097268 R11: 0000000000000004 R12: 0000000000000000 [ 17.761045] R13: 1ffff10007412e7e R14: ffff88003b00ecc8 R15: ffff88003a097490 [ 17.761687] FS: 0000000000000000(0000) GS:ffff88003ec00000(0000) knlGS:0000000000000000 [ 17.763762] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 17.764206] CR2: 00007fb4c6d1ee99 CR3: 000000003bdc0000 CR4: 00000000000026f0 [ 17.764751] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 17.765284] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 17.765841] Call Trace: [ 17.766043] ? eventfd_ctx_remove_wait_queue+0x9d/0x5b0 [ 17.766438] eventfd_ctx_remove_wait_queue+0x173/0x5b0 [ 17.766830] ? check_noncircular+0x20/0x20 [ 17.767289] ? eventfd_file_create.part.3+0x250/0x250 [ 17.767783] ? lock_acquire+0x1d5/0x580 [ 17.768168] ? lock_acquire+0x1d5/0x580 [ 17.768518] ? process_one_work+0xb32/0x1bc0 [ 17.768918] irqfd_shutdown+0x95/0x1a0 [ 17.769268] ? __lock_is_held+0xb6/0x140 [ 17.769644] ? irqfd_resampler_shutdown+0x6b0/0x6b0 [ 17.770063] process_one_work+0xbf0/0x1bc0 [ 17.770372] ? _raw_spin_unlock_irq+0x27/0x70 [ 17.770705] ? pwq_dec_nr_in_flight+0x450/0x450 [ 17.772403] ? preempt_notifier_dec+0x20/0x20 [ 17.772799] ? __schedule+0x8f3/0x2060 [ 17.773090] ? print_irqtrace_events+0x270/0x270 [ 17.773442] ? check_noncircular+0x20/0x20 [ 17.773766] ? lock_acquire+0x1d5/0x580 [ 17.774055] ? lock_acquire+0x1d5/0x580 [ 17.774344] ? worker_thread+0x4a3/0x1990 [ 17.774655] ? lock_downgrade+0x990/0x990 [ 17.774973] ? lock_release+0xa40/0xa40 [ 17.775266] ? do_raw_spin_trylock+0x190/0x190 [ 17.775615] ? retint_kernel+0x10/0x10 [ 17.775915] worker_thread+0x223/0x1990 [ 17.776223] ? process_one_work+0x1bc0/0x1bc0 [ 17.776561] ? _raw_spin_unlock_irq+0x27/0x70 [ 17.776903] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 17.777273] ? trace_hardirqs_on+0xd/0x10 [ 17.777578] ? _raw_spin_unlock_irq+0x27/0x70 [ 17.777916] ? finish_task_switch+0x1d3/0x740 [ 17.778267] ? finish_task_switch+0x1aa/0x740 [ 17.778615] ? preempt_notifier_dec+0x20/0x20 [ 17.779518] ? __schedule+0x8f3/0x2060 [ 17.779853] ? find_held_lock+0x35/0x1d0 [ 17.780211] ? find_held_lock+0x35/0x1d0 [ 17.780514] ? complete+0x62/0x80 [ 17.780773] ? __schedule+0x2060/0x2060 [ 17.781063] ? do_wait_intr+0x370/0x3e0 [ 17.781359] ? __lockdep_init_map+0xe4/0x650 [ 17.781702] ? lockdep_init_map+0x9/0x10 [ 17.781999] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 17.782372] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 17.782739] ? trace_hardirqs_on+0xd/0x10 [ 17.783279] ? __kthread_parkme+0x175/0x240 [ 17.783595] kthread+0x38b/0x470 [ 17.783842] ? process_one_work+0x1bc0/0x1bc0 [ 17.784175] ? kthread_create_on_node+0x100/0x100 [ 17.784841] ret_from_fork+0x2a/0x40 [ 17.785121] Code: 00 00 00 00 ad de 49 39 c4 74 66 48 b8 00 02 00 00 00 00 ad de 48 89 da 48 39 c3 74 65 48 c1 ea 03 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 75 7b 48 8b 13 48 39 f2 75 57 49 8d 7c 24 08 48 b8 [ 17.786650] RIP: __list_del_entry_valid+0x7e/0x150 RSP: ffff88003a097390 [ 17.787166] ---[ end trace 3e59766b58c19e88 ]--- [ 17.787509] Kernel panic - not syncing: Fatal exception