protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
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
Modules linked in:
CPU: 1 PID: 26461 Comm: syz-executor.2 Not tainted 4.14.121 #15
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888093da8440 task.stack: ffff888097938000
RIP: 0010:kernfs_add_one+0x2cb/0x3a0 fs/kernfs/dir.c:794
RSP: 0018:ffff88809793f468 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90007e65000
RDX: 0000000000000001 RSI: ffffffff81a9c8c3 RDI: 0000000000000008
RBP: ffff88809793f4a0 R08: fffffbfff12348d8 R09: ffff888093da8440
R10: dffffc0000000000 R11: ffff888093da8440 R12: ffff88806141b540
R13: ffff88806141b540 R14: 0000000000000000 R15: ffff88806141b568
FS:  00007fe840e7c700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 000000009a7ac000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kernfs_create_dir_ns+0xea/0x140 fs/kernfs/dir.c:1008
 sysfs_create_dir_ns+0xbe/0x1d0 fs/sysfs/dir.c:55
 create_dir lib/kobject.c:71 [inline]
 kobject_add_internal.part.0.cold+0x114/0x5ae lib/kobject.c:229
 kobject_add_internal lib/kobject.c:205 [inline]
 kobject_add_varg lib/kobject.c:364 [inline]
 kobject_add+0x11f/0x180 lib/kobject.c:409
 device_add+0x383/0x1490 drivers/base/core.c:1809
 hci_register_dev+0x2d9/0x810 net/bluetooth/hci_core.c:3118
 __vhci_create_device+0x2a6/0x560 drivers/bluetooth/hci_vhci.c:139
 vhci_create_device drivers/bluetooth/hci_vhci.c:163 [inline]
 vhci_get_user drivers/bluetooth/hci_vhci.c:219 [inline]
 vhci_write+0x2a1/0x437 drivers/bluetooth/hci_vhci.c:299
 call_write_iter include/linux/fs.h:1774 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x4a7/0x6b0 fs/read_write.c:482
 __kernel_write+0xfc/0x370 fs/read_write.c:501
 write_pipe_buf+0x148/0x1c0 fs/splice.c:797
 splice_from_pipe_feed fs/splice.c:502 [inline]
 __splice_from_pipe+0x348/0x780 fs/splice.c:626
 splice_from_pipe+0xf0/0x150 fs/splice.c:661
 default_file_splice_write+0x3c/0x80 fs/splice.c:809
 do_splice_from fs/splice.c:851 [inline]
 direct_splice_actor+0x123/0x190 fs/splice.c:1018
 splice_direct_to_actor+0x29e/0x7b0 fs/splice.c:973
 do_splice_direct+0x18d/0x230 fs/splice.c:1061
 do_sendfile+0x4db/0xbd0 fs/read_write.c:1440
 SYSC_sendfile64 fs/read_write.c:1495 [inline]
 SyS_sendfile64+0x9d/0x110 fs/read_write.c:1487
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x459279
RSP: 002b:00007fe840e7bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000459279
RDX: 0000000020000140 RSI: 0000000000000005 RDI: 0000000000000003
RBP: 000000000075c100 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 00007fe840e7c6d4
R13: 00000000004c65f3 R14: 00000000004db268 R15: 00000000ffffffff
Code: 70 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 9a 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 70 48 8d 7b 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 04 3c 03 7e 6e f6 43 08 01 0f 85 09 fe ff 
RIP: kernfs_add_one+0x2cb/0x3a0 fs/kernfs/dir.c:794 RSP: ffff88809793f468
kobject: 'loop3' (ffff8880a49fc960): kobject_uevent_env
kobject: 'loop3' (ffff8880a49fc960): fill_kobj_path: path = '/devices/virtual/block/loop3'
---[ end trace bd01e1bd02fa1b0c ]---