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 kobject: 'loop2' (00000000d3511b46): kobject_uevent_env CPU: 0 PID: 27557 Comm: syz-executor0 Not tainted 4.19.0-rc4-next-20180921+ #77 kobject: 'loop2' (00000000d3511b46): fill_kobj_path: path = '/devices/virtual/block/loop2' 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:2486 [inline] RIP: 0010:fire_sched_in_preempt_notifiers kernel/sched/core.c:2492 [inline] RIP: 0010:finish_task_switch+0x3a4/0x900 kernel/sched/core.c:2684 Code: 3d 04 00 00 4d 8b bc 24 50 03 00 00 4d 85 ff 0f 84 ab fe ff ff 49 bc 00 00 00 00 00 fc ff df 49 8d 7f 10 48 89 f9 48 c1 e9 03 <42> 80 3c 21 00 0f 85 da 03 00 00 49 8b 4f 10 48 89 ce 48 c1 ee 03 RSP: 0018:ffff8801d2d8ed20 EFLAGS: 00010a06 kobject: 'kvm' (00000000d64b0207): kobject_uevent_env RAX: 0000000000000000 RBX: ffff8801dac2cc40 RCX: 1bd5a00000000022 RDX: 00000000000042a7 RSI: ffffffff810f018e RDI: dead000000000110 RBP: ffff8801d2d8ee08 R08: ffff8801c3cc0480 R09: fffff520006eea46 R10: fffff520006eea46 R11: ffffc90003775237 R12: dffffc0000000000 R13: ffff880187f5e300 R14: 0000000000000000 R15: dead000000000100 kobject: 'kvm' (00000000d64b0207): fill_kobj_path: path = '/devices/virtual/misc/kvm' FS: 00007f8a09dcf700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff168c4fc0 CR3: 00000001bb0d3000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'loop4' (00000000e5e9de9d): kobject_uevent_env Call Trace: kobject: 'loop4' (00000000e5e9de9d): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000d64b0207): kobject_uevent_env kobject: 'kvm' (00000000d64b0207): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (00000000a2dc5bf2): kobject_uevent_env context_switch kernel/sched/core.c:2833 [inline] __schedule+0x874/0x1ed0 kernel/sched/core.c:3479 kobject: 'loop5' (00000000a2dc5bf2): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'kvm' (00000000d64b0207): kobject_uevent_env preempt_schedule_irq+0x87/0x110 kernel/sched/core.c:3706 retint_kernel+0x1b/0x2d RIP: 0010:update_stack_state+0x3f0/0x690 arch/x86/kernel/unwind_frame.c:208 Code: 00 49 89 5e 40 b8 01 00 00 00 eb 02 31 c0 4c 8b a5 18 ff ff ff 48 ba 00 00 00 00 00 fc ff df 49 01 d4 49 c7 04 24 00 00 00 00 <49> c7 44 24 08 00 00 00 00 48 8b 5d d0 65 48 33 1c 25 28 00 00 00 kobject: 'kvm' (00000000d64b0207): fill_kobj_path: path = '/devices/virtual/misc/kvm' RSP: 0018:ffff8801d2d8f0e0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffff8801d2d8f5d0 RCX: 1ffff1003a5b1e00 RDX: dffffc0000000000 RSI: ffff8801d2d8f5e0 RDI: ffff8801d2d8f358 RBP: ffff8801d2d8f1e8 R08: ffff8801d2d8f348 R09: ffff8801c3cc0480 R10: ffffed003a5b1e6c R11: ffff8801d2d8f367 R12: ffffed003a5b1e24 R13: ffff8801d2d8f300 R14: ffff8801d2d8f310 R15: ffff8801d2d8f350 kobject: 'loop5' (00000000a2dc5bf2): kobject_uevent_env kobject: 'loop5' (00000000a2dc5bf2): fill_kobj_path: path = '/devices/virtual/block/loop5' unwind_next_frame.part.7+0x1ae/0x9e0 arch/x86/kernel/unwind_frame.c:329 unwind_next_frame+0x3e/0x50 arch/x86/kernel/unwind_frame.c:287 __save_stack_trace+0x7d/0xf0 arch/x86/kernel/stacktrace.c:44 kobject: 'vet' (00000000f1751abd): kobject_add_internal: parent: 'net', set: 'devices' save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60 save_stack+0x43/0xd0 mm/kasan/kasan.c:448 kobject: 'kvm' (00000000d64b0207): kobject_uevent_env kobject: 'kvm' (00000000d64b0207): fill_kobj_path: path = '/devices/virtual/misc/kvm' set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:553 kobject: 'loop2' (00000000d3511b46): kobject_uevent_env 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 alloc_inode+0xb2/0x190 fs/inode.c:212 kobject: 'loop2' (00000000d3511b46): fill_kobj_path: path = '/devices/virtual/block/loop2' new_inode_pseudo+0x71/0x1a0 fs/inode.c:903 new_inode+0x1c/0x40 fs/inode.c:932 kobject: 'vet' (00000000f1751abd): kobject_uevent_env debugfs_get_inode+0x19/0x120 fs/debugfs/inode.c:37 kobject: 'vet' (00000000f1751abd): fill_kobj_path: path = '/devices/virtual/net/vet' __debugfs_create_file+0xb5/0x400 fs/debugfs/inode.c:354 debugfs_create_file+0x57/0x70 fs/debugfs/inode.c:401 kvm_create_vm_debugfs arch/x86/kvm/../../../virt/kvm/kvm_main.c:619 [inline] kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:3213 [inline] kvm_dev_ioctl+0xc0a/0x1ae0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3240 kobject: 'queues' (00000000a3b89ebd): kobject_add_internal: parent: 'vet', set: '' kobject: 'queues' (00000000a3b89ebd): kobject_uevent_env kobject: 'queues' (00000000a3b89ebd): kobject_uevent_env: filter function caused the event to drop! vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 kobject: 'rx-0' (00000000cbb2126f): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (00000000cbb2126f): kobject_uevent_env kobject: 'rx-0' (00000000cbb2126f): fill_kobj_path: path = '/devices/virtual/net/vet/queues/rx-0' 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 kobject: 'tx-0' (00000000295f085c): kobject_add_internal: parent: 'queues', set: 'queues' do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 kobject: 'tx-0' (00000000295f085c): kobject_uevent_env kobject: 'tx-0' (00000000295f085c): fill_kobj_path: path = '/devices/virtual/net/vet/queues/tx-0' entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: 1d 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 kobject: 'loop1' (00000000db8cc06e): kobject_uevent_env RSP: 002b:00007f8a09dcec78 EFLAGS: 00000246 kobject: 'loop1' (00000000db8cc06e): fill_kobj_path: path = '/devices/virtual/block/loop1' ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f8a09dcf6d4 RCX: 0000000000457679 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000008 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cfc28 R14: 00000000004bfd60 R15: 0000000000000000 Modules linked in: ---[ end trace 554ce4116d53a52b ]--- kobject: 'kvm' (00000000d64b0207): kobject_uevent_env RIP: 0010:__fire_sched_in_preempt_notifiers kernel/sched/core.c:2486 [inline] RIP: 0010:fire_sched_in_preempt_notifiers kernel/sched/core.c:2492 [inline] RIP: 0010:finish_task_switch+0x3a4/0x900 kernel/sched/core.c:2684 Code: 3d 04 00 00 4d 8b bc 24 50 03 00 00 4d 85 ff 0f 84 ab fe ff ff 49 bc 00 00 00 00 00 fc ff df 49 8d 7f 10 48 89 f9 48 c1 e9 03 <42> 80 3c 21 00 0f 85 da 03 00 00 49 8b 4f 10 48 89 ce 48 c1 ee 03 kobject: 'kvm' (00000000d64b0207): fill_kobj_path: path = '/devices/virtual/misc/kvm' RSP: 0018:ffff8801d2d8ed20 EFLAGS: 00010a06 RAX: 0000000000000000 RBX: ffff8801dac2cc40 RCX: 1bd5a00000000022 RDX: 00000000000042a7 RSI: ffffffff810f018e RDI: dead000000000110 RBP: ffff8801d2d8ee08 R08: ffff8801c3cc0480 R09: fffff520006eea46 R10: fffff520006eea46 R11: ffffc90003775237 R12: dffffc0000000000 R13: ffff880187f5e300 R14: 0000000000000000 R15: dead000000000100 kobject: 'kvm' (00000000d64b0207): kobject_uevent_env FS: 00007f8a09dcf700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 kobject: 'kvm' (00000000d64b0207): fill_kobj_path: path = '/devices/virtual/misc/kvm' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff168c4fc0 CR3: 00000001bb0d3000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400