8021q: adding VLAN 0 to HW filter on device team0
hrtimer: interrupt took 44788 ns
==================================================================
BUG: KASAN: use-after-free in debugfs_remove+0x10b/0x130 fs/debugfs/inode.c:682
Read of size 8 at addr ffff8801cb686900 by task kworker/1:0/19

CPU: 1 PID: 19 Comm: kworker/1:0 Not tainted 4.19.0-rc8+ #296
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events __blk_release_queue
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b6 lib/dump_stack.c:113
 print_address_description.cold.8+0x9/0x1ff mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.9+0x242/0x309 mm/kasan/report.c:412
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 debugfs_remove+0x10b/0x130 fs/debugfs/inode.c:682
 blk_trace_free+0x35/0x130 kernel/trace/blktrace.c:312
 blk_trace_cleanup kernel/trace/blktrace.c:339 [inline]
 __blk_trace_remove+0x7a/0xa0 kernel/trace/blktrace.c:352
 blk_trace_shutdown+0x63/0x80 kernel/trace/blktrace.c:752
 __blk_release_queue+0x22d/0x500 block/blk-sysfs.c:852
 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153
 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
 kthread+0x35a/0x420 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413

Allocated by task 7319:
 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
 kmem_cache_alloc+0x12e/0x730 mm/slab.c:3554
 __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+0xc6/0x200 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
 do_blk_trace_setup+0x454/0xda0 kernel/trace/blktrace.c:528
 __blk_trace_setup+0xd5/0x180 kernel/trace/blktrace.c:577
 blk_trace_ioctl+0x17a/0x2f0 kernel/trace/blktrace.c:716
 blkdev_ioctl+0x8bc/0x2010 block/ioctl.c:587
 block_ioctl+0xee/0x130 fs/block_dev.c:1883
 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

Freed by task 5357:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x102/0x150 mm/kasan/kasan.c:521
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
 __cache_free mm/slab.c:3498 [inline]
 kmem_cache_free+0x83/0x290 mm/slab.c:3756
 __d_free+0x20/0x30 fs/dcache.c:257
 __rcu_reclaim kernel/rcu/rcu.h:236 [inline]
 rcu_do_batch kernel/rcu/tree.c:2576 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2880 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2847 [inline]
 rcu_process_callbacks+0xf23/0x2670 kernel/rcu/tree.c:2864
 __do_softirq+0x30c/0xb03 kernel/softirq.c:292

The buggy address belongs to the object at ffff8801cb6868c0
 which belongs to the cache dentry(65:syz5) of size 288
The buggy address is located 64 bytes inside of
 288-byte region [ffff8801cb6868c0, ffff8801cb6869e0)
The buggy address belongs to the page:
page:ffffea00072da180 count:1 mapcount:0 mapping:ffff8801d8d98e00 index:0x0
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffffea00071ac988 ffffea00071272c8 ffff8801d8d98e00
raw: 0000000000000000 ffff8801cb686080 000000010000000b ffff8801b8a1c2c0
page dumped because: kasan: bad access detected
page->mem_cgroup:ffff8801b8a1c2c0

Memory state around the buggy address:
 ffff8801cb686800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801cb686880: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
>ffff8801cb686900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff8801cb686980: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8801cb686a00: fc fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================