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BUG: KASAN: slab-out-of-bounds in hiddev_ioctl_usage+0x1764/0x1830 drivers/hid/usbhid/hiddev.c:528
Write of size 4 at addr ffff8881c455ca58 by task syz-executor.0/13176

CPU: 0 PID: 13176 Comm: syz-executor.0 Not tainted 5.4.35-syzkaller-00686-g5d7b3b73e9a8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x14a/0x1ce lib/dump_stack.c:118
 print_address_description+0x93/0x620 mm/kasan/report.c:374
 __kasan_report+0x16d/0x1e0 mm/kasan/report.c:506
 kasan_report+0x34/0x60 mm/kasan/common.c:634
 hiddev_ioctl_usage+0x1764/0x1830 drivers/hid/usbhid/hiddev.c:528
 hiddev_ioctl+0x7a7/0x29a0 drivers/hid/usbhid/hiddev.c:794
 do_vfs_ioctl+0x770/0x1750 fs/ioctl.c:47
 ksys_ioctl fs/ioctl.c:714 [inline]
 __do_sys_ioctl fs/ioctl.c:721 [inline]
 __se_sys_ioctl fs/ioctl.c:719 [inline]
 __x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:719
 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c829
Code: 0d b7 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f947696ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e5700 RCX: 000000000045c829
RDX: 0000000020000000 RSI: 000000004018480c RDI: 0000000000000004
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000331 R14: 00000000004c596e R15: 00007f947696f6d4

The buggy address belongs to the page:
page:ffffea0007115400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 compound_mapcount: 0
flags: 0x8000000000010000(head)
raw: 8000000000010000 dead000000000100 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881c455c900: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
 ffff8881c455c980: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
>ffff8881c455ca00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
                                                    ^
 ffff8881c455ca80: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
 ffff8881c455cb00: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe
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