usb 4-1: string descriptor 0 read error: -22 ================================================================== BUG: KASAN: slab-out-of-bounds in hiddev_ioctl_usage.isra.0+0x137f/0x13f0 drivers/hid/usbhid/hiddev.c:522 Read of size 4 at addr ffff8881a45c8074 by task syz-executor.1/18108 CPU: 1 PID: 18108 Comm: syz-executor.1 Not tainted 5.9.0-rc1-syzkaller #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+0xf6/0x16e lib/dump_stack.c:118 print_address_description.constprop.0+0x1c/0x210 mm/kasan/report.c:383 __kasan_report mm/kasan/report.c:513 [inline] kasan_report.cold+0x37/0x7c mm/kasan/report.c:530 hiddev_ioctl_usage.isra.0+0x137f/0x13f0 drivers/hid/usbhid/hiddev.c:522 hiddev_ioctl+0x7a3/0x1570 drivers/hid/usbhid/hiddev.c:794 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d4d9 Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1874d45c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000000eb40 RCX: 000000000045d4d9 RDX: 0000000020000480 RSI: 00000000c018480b RDI: 0000000000000005 RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffd670029ff R14: 00007f1874d469c0 R15: 000000000118cf4c The buggy address belongs to the page: page:00000000e3a0c2b1 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a4580 head:00000000e3a0c2b1 order:7 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010000(head) raw: 0200000000010000 dead000000000100 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881a45c7f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8881a45c7f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8881a45c8000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fe fe ^ ffff8881a45c8080: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ffff8881a45c8100: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ==================================================================