8021q: adding VLAN 0 to HW filter on device batadv0
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: 0 PID: 7554 Comm: syz-executor0 Not tainted 5.0.0-rc4-next-20190130 #22
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:debugfs_create_files+0x2e/0x140 block/blk-mq-debugfs.c:842
Code: 41 56 49 89 fe 41 55 41 54 49 89 f4 53 48 89 d3 e8 87 d0 f3 fd 49 8d 7e 58 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e3 00 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b
RSP: 0018:ffff88808c9df100 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: ffffffff8881d400 RCX: ffffffff82d9f665
RDX: 0000000000000008 RSI: ffffffff838e48c9 RDI: 0000000000000047
RBP: ffff88808c9df120 R08: ffff888094c26700 R09: fffffbfff13024e6
R10: fffffbfff13024e5 R11: ffffffff8981272b R12: ffff8880a89caf90
R13: ffff8880a89caf90 R14: ffffffffffffffef R15: ffff8880a89cb058
FS:  000000000128b940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000073c000 CR3: 0000000093a9f000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 blk_mq_debugfs_register+0xec/0x4e0 block/blk-mq-debugfs.c:865
 blk_register_queue+0x1bc/0x370 block/blk-sysfs.c:944
 __device_add_disk+0xe9f/0x13c0 block/genhd.c:723
 device_add_disk+0x2b/0x40 block/genhd.c:739
 add_disk include/linux/genhd.h:422 [inline]
 loop_add+0x71d/0xa30 drivers/block/loop.c:1999
 loop_probe+0x18e/0x1d0 drivers/block/loop.c:2071
 kobj_lookup+0x265/0x460 drivers/base/map.c:124
 get_gendisk+0x4d/0x380 block/genhd.c:847
 bdev_get_gendisk fs/block_dev.c:1103 [inline]
 __blkdev_get+0x481/0x1560 fs/block_dev.c:1489
 blkdev_get+0xc1/0xae0 fs/block_dev.c:1648
 blkdev_open+0x205/0x290 fs/block_dev.c:1806
 do_dentry_open+0x495/0x1230 fs/open.c:771
 vfs_open+0xa0/0xd0 fs/open.c:880
 do_last fs/namei.c:3418 [inline]
 path_openat+0x144f/0x5660 fs/namei.c:3535
 do_filp_open+0x26f/0x370 fs/namei.c:3565
 do_sys_open+0x59a/0x7c0 fs/open.c:1063
 __do_sys_open fs/open.c:1081 [inline]
 __se_sys_open fs/open.c:1076 [inline]
 __x64_sys_open+0x7e/0xc0 fs/open.c:1076
 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x412010
Code: 48 83 c4 08 48 3d 01 f0 ff ff 0f 83 da 17 00 00 c3 66 0f 1f 84 00 00 00 00 00 83 3d 7d 42 64 00 00 75 14 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 b4 17 00 00 c3 48 83 ec 08 e8 2a fa ff ff
RSP: 002b:00007ffd42ad2fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000412010
RDX: 00007ffd42ad304a RSI: 0000000000000002 RDI: 00007ffd42ad3040
RBP: 000000000000001f R08: 0000000000000000 R09: 000000000000000a
R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000010
R13: 000000000000c1d7 R14: 0000000000000008 R15: 0000000000000000
Modules linked in:
---[ end trace b53bd4b9a3616b8f ]---
RIP: 0010:debugfs_create_files+0x2e/0x140 block/blk-mq-debugfs.c:842
Code: 41 56 49 89 fe 41 55 41 54 49 89 f4 53 48 89 d3 e8 87 d0 f3 fd 49 8d 7e 58 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e3 00 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b
RSP: 0018:ffff88808c9df100 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: ffffffff8881d400 RCX: ffffffff82d9f665
RDX: 0000000000000008 RSI: ffffffff838e48c9 RDI: 0000000000000047
RBP: ffff88808c9df120 R08: ffff888094c26700 R09: fffffbfff13024e6
R10: fffffbfff13024e5 R11: ffffffff8981272b R12: ffff8880a89caf90
R13: ffff8880a89caf90 R14: ffffffffffffffef R15: ffff8880a89cb058
FS:  000000000128b940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000073c000 CR3: 0000000093a9f000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400