kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 24654 Comm: syz-executor3 Not tainted 4.19.0-rc4+ #22 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__fire_sched_in_preempt_notifiers kernel/sched/core.c:2481 [inline] RIP: 0010:fire_sched_in_preempt_notifiers kernel/sched/core.c:2487 [inline] RIP: 0010:finish_task_switch+0x599/0x900 kernel/sched/core.c:2679 kobject: 'kvm' (0000000087241a51): kobject_uevent_env Code: 89 e1 48 c1 e9 03 42 80 3c 39 00 0f 85 a7 01 00 00 4d 8b 24 24 4d 85 e4 0f 84 ad fc ff ff 49 8d 7c 24 10 48 89 f9 48 c1 e9 03 <42> 80 3c 39 00 74 a5 e8 2b cb 6c 00 eb 9e 49 8d 7d 78 48 b8 00 00 RSP: 0018:ffff8801261ce7b0 EFLAGS: 00010a06 RAX: 0000000000000000 RBX: ffff8801daf2cb40 RCX: 1bd5a00000000022 RDX: 0000000000004cd3 RSI: ffffffff810f036e RDI: dead000000000110 kobject: 'kvm' (0000000087241a51): fill_kobj_path: path = '/devices/virtual/misc/kvm' RBP: ffff8801261ce898 R08: ffff8801c3c506c0 R09: fffff5200035f646 R10: fffff5200035f646 R11: ffffc90001afb237 R12: dead000000000100 R13: ffff88012953c440 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007ff866358700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff8663350b8 CR3: 00000001bb709000 CR4: 00000000001426e0 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x874/0x1ed0 kernel/sched/core.c:3473 preempt_schedule_irq+0x87/0x110 kernel/sched/core.c:3700 retint_kernel+0x1b/0x2d RIP: 0010:__kernel_text_address+0x5/0x40 kernel/extable.c:106 Code: 00 00 00 c3 48 89 df e8 09 c7 38 00 0f b6 c0 eb db e8 af 7d 6f 00 e9 6d ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 53 <48> 89 fb e8 03 ff ff ff 85 c0 75 18 48 81 fb 00 b0 3c 8a 72 0c 31 RSP: 0018:ffff8801261ceb70 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff8801261ceba8 RCX: 0000000000000000 RDX: 1ffff10024c39d7e RSI: ffff8801261ceed0 RDI: ffffffff81c1daeb RBP: ffff8801261ceb78 R08: ffff8801261cebe0 R09: ffff8801c3c506c0 R10: ffffed0024c39d7f R11: ffff8801261cebff R12: ffff8801261cebf0 R13: 0000000000000000 R14: ffff8801c3c506c0 R15: ffff88011ddc93df unwind_get_return_address+0x61/0xa0 arch/x86/kernel/unwind_frame.c:18 __save_stack_trace+0x8d/0xf0 arch/x86/kernel/stacktrace.c:45 save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60 save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:553 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490 slab_post_alloc_hook mm/slab.h:444 [inline] slab_alloc mm/slab.c:3392 [inline] kmem_cache_alloc+0x11b/0x730 mm/slab.c:3552 __d_alloc+0xc8/0xcc0 fs/dcache.c:1614 d_alloc+0x96/0x380 fs/dcache.c:1698 d_alloc_parallel+0x15a/0x1f40 fs/dcache.c:2441 __lookup_slow+0x1e6/0x540 fs/namei.c:1654 lookup_one_len+0x1d8/0x220 fs/namei.c:2543 start_creating+0xf2/0x220 fs/debugfs/inode.c:308 __debugfs_create_file+0x63/0x400 fs/debugfs/inode.c:347 debugfs_create_file+0x57/0x70 fs/debugfs/inode.c:399 kvm_create_vm_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:620 [inline] kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3214 [inline] kvm_dev_ioctl+0xbe0/0x1b10 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3241 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4572d9 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff866357c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff8663586d4 RCX: 00000000004572d9 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000006 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cf628 R14: 00000000004c58a7 R15: 0000000000000000 Modules linked in: ---[ end trace 58bf20764099cb76 ]--- RIP: 0010:__fire_sched_in_preempt_notifiers kernel/sched/core.c:2481 [inline] RIP: 0010:fire_sched_in_preempt_notifiers kernel/sched/core.c:2487 [inline] RIP: 0010:finish_task_switch+0x599/0x900 kernel/sched/core.c:2679 Code: 89 e1 48 c1 e9 03 42 80 3c 39 00 0f 85 a7 01 00 00 4d 8b 24 24 4d 85 e4 0f 84 ad fc ff ff 49 8d 7c 24 10 48 89 f9 48 c1 e9 03 <42> 80 3c 39 00 74 a5 e8 2b cb 6c 00 eb 9e 49 8d 7d 78 48 b8 00 00 kobject: 'loop5' (000000003f05356c): kobject_uevent_env RSP: 0018:ffff8801261ce7b0 EFLAGS: 00010a06 RAX: 0000000000000000 RBX: ffff8801daf2cb40 RCX: 1bd5a00000000022 RDX: 0000000000004cd3 RSI: ffffffff810f036e RDI: dead000000000110 RBP: ffff8801261ce898 R08: ffff8801c3c506c0 R09: fffff5200035f646 R10: fffff5200035f646 R11: ffffc90001afb237 R12: dead000000000100 R13: ffff88012953c440 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007ff866358700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff8663350b8 CR3: 00000001bb709000 CR4: 00000000001426e0