input: syz1 as /devices/virtual/input/input207
input: syz1 as /devices/virtual/input/input208
------------[ cut here ]------------
WARNING: CPU: 1 PID: 15631 at ./include/linux/kref.h:46 kref_get include/linux/kref.h:46 [inline]
WARNING: CPU: 1 PID: 15631 at ./include/linux/kref.h:46 kobject_get+0xd1/0xf0 lib/kobject.c:596
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 15631 Comm: syz-executor6 Not tainted 4.9.125+ #37
 ffff8801a2a977e0 ffffffff81af0ae9 ffffffff82838ba0 00000000ffffffff
 0000000000000000 0000000000000001 000000000000002e ffff8801a2a978a0
 ffffffff813df095 0000000041b58ab3 ffffffff82c28773 ffffffff813deed6
Call Trace:
 [<ffffffff81af0ae9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81af0ae9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff813df095>] panic+0x1bf/0x39f kernel/panic.c:179
 [<ffffffff813df364>] __warn.cold.9+0xc1/0x17f kernel/panic.c:542
 [<ffffffff810d93cc>] warn_slowpath_null+0x2c/0x40 kernel/panic.c:585
 [<ffffffff81af6f41>] kref_get include/linux/kref.h:46 [inline]
 [<ffffffff81af6f41>] kobject_get+0xd1/0xf0 lib/kobject.c:596
 [<ffffffff814f74e1>] cdev_get+0x51/0xa0 fs/char_dev.c:333
 [<ffffffff814f7c6d>] chrdev_open+0xad/0x4c0 fs/char_dev.c:378
 [<ffffffff814e229f>] do_dentry_open+0x3ef/0xc90 fs/open.c:766
 [<ffffffff814e5bcc>] vfs_open+0x11c/0x210 fs/open.c:879
 [<ffffffff8151c832>] do_last fs/namei.c:3410 [inline]
 [<ffffffff8151c832>] path_openat+0x542/0x2790 fs/namei.c:3534
 [<ffffffff81521907>] do_filp_open+0x197/0x270 fs/namei.c:3568
 [<ffffffff814e65dd>] do_sys_open+0x30d/0x5c0 fs/open.c:1072
 [<ffffffff814e68bd>] SYSC_open fs/open.c:1090 [inline]
 [<ffffffff814e68bd>] SyS_open+0x2d/0x40 fs/open.c:1085
 [<ffffffff8100554f>] do_syscall_64+0x19f/0x480 arch/x86/entry/common.c:282
 [<ffffffff8278c193>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..