================================================================== BUG: KASAN: slab-out-of-bounds in hiddev_ioctl_usage.isra.0+0x1251/0x13b0 drivers/hid/usbhid/hiddev.c:528 Write of size 4 at addr ffff8881c9c0f2a0 by task syz-executor.3/27111 CPU: 1 PID: 27111 Comm: syz-executor.3 Not tainted 5.5.0-rc7-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+0xef/0x16e lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xd3/0x314 mm/kasan/report.c:374 __kasan_report.cold+0x37/0x85 mm/kasan/report.c:506 kasan_report+0xe/0x20 mm/kasan/common.c:639 hiddev_ioctl_usage.isra.0+0x1251/0x13b0 drivers/hid/usbhid/hiddev.c:528 hiddev_ioctl+0x7a1/0x1550 drivers/hid/usbhid/hiddev.c:794 vfs_ioctl fs/ioctl.c:47 [inline] file_ioctl fs/ioctl.c:545 [inline] do_vfs_ioctl+0x90c/0x1420 fs/ioctl.c:732 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:749 __do_sys_ioctl fs/ioctl.c:756 [inline] __se_sys_ioctl fs/ioctl.c:754 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:754 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b399 Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f491d5c9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f491d5ca6d4 RCX: 000000000045b399 RDX: 0000000020000080 RSI: 000000004018480c RDI: 0000000000000005 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000343 R14: 00000000004c466b R15: 000000000075bf2c Allocated by task 24488: save_stack+0x1b/0x80 mm/kasan/common.c:72 set_track mm/kasan/common.c:80 [inline] __kasan_kmalloc mm/kasan/common.c:513 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:486 kmalloc include/linux/slab.h:561 [inline] kzalloc include/linux/slab.h:670 [inline] hid_register_field drivers/hid/hid-core.c:102 [inline] hid_add_field+0x463/0x11e0 drivers/hid/hid-core.c:303 hid_parser_main+0x25e/0xa60 drivers/hid/hid-core.c:624 hid_open_report+0x375/0x640 drivers/hid/hid-core.c:1253 hid_parse include/linux/hid.h:1017 [inline] cmhid_probe+0xdd/0x160 drivers/hid/hid-cmedia.c:117 hid_device_probe+0x2be/0x3f0 drivers/hid/hid-core.c:2261 really_probe+0x290/0xad0 drivers/base/dd.c:548 driver_probe_device+0x223/0x350 drivers/base/dd.c:721 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x390 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0x1459/0x1bf0 drivers/base/core.c:2487 hid_add_device drivers/hid/hid-core.c:2417 [inline] hid_add_device+0x33c/0x9a0 drivers/hid/hid-core.c:2366 usbhid_probe+0xa81/0xfa0 drivers/hid/usbhid/hid-core.c:1386 usb_probe_interface+0x310/0x800 drivers/usb/core/driver.c:361 really_probe+0x290/0xad0 drivers/base/dd.c:548 driver_probe_device+0x223/0x350 drivers/base/dd.c:721 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x390 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0x1459/0x1bf0 drivers/base/core.c:2487 usb_set_configuration+0xe47/0x17d0 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0xaf/0x140 drivers/usb/core/driver.c:266 really_probe+0x290/0xad0 drivers/base/dd.c:548 driver_probe_device+0x223/0x350 drivers/base/dd.c:721 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:828 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430 __device_attach+0x217/0x390 drivers/base/dd.c:894 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490 device_add+0x1459/0x1bf0 drivers/base/core.c:2487 usb_new_device.cold+0x540/0xcd0 drivers/usb/core/hub.c:2538 hub_port_connect drivers/usb/core/hub.c:5185 [inline] hub_port_connect_change drivers/usb/core/hub.c:5325 [inline] port_event drivers/usb/core/hub.c:5471 [inline] hub_event+0x21cb/0x4300 drivers/usb/core/hub.c:5553 process_one_work+0x945/0x15c0 kernel/workqueue.c:2264 worker_thread+0x96/0xe20 kernel/workqueue.c:2410 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Freed by task 5811: save_stack+0x1b/0x80 mm/kasan/common.c:72 set_track mm/kasan/common.c:80 [inline] kasan_set_free_info mm/kasan/common.c:335 [inline] __kasan_slab_free+0x117/0x160 mm/kasan/common.c:474 slab_free_hook mm/slub.c:1425 [inline] slab_free_freelist_hook mm/slub.c:1458 [inline] slab_free mm/slub.c:3005 [inline] kfree+0xd5/0x300 mm/slub.c:3957 urb_destroy drivers/usb/core/urb.c:26 [inline] kref_put include/linux/kref.h:65 [inline] usb_free_urb.part.0+0xaf/0x110 drivers/usb/core/urb.c:96 usb_free_urb+0x1b/0x30 drivers/usb/core/urb.c:95 usb_start_wait_urb+0x1e8/0x4c0 drivers/usb/core/message.c:79 usb_internal_control_msg drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152 usb_get_descriptor+0xc1/0x1b0 drivers/usb/core/message.c:647 usb_get_configuration+0x28c/0x3990 drivers/usb/core/config.c:891 usb_enumerate_device drivers/usb/core/hub.c:2371 [inline] usb_new_device+0x2f9/0x450 drivers/usb/core/hub.c:2507 hub_port_connect drivers/usb/core/hub.c:5185 [inline] hub_port_connect_change drivers/usb/core/hub.c:5325 [inline] port_event drivers/usb/core/hub.c:5471 [inline] hub_event+0x21cb/0x4300 drivers/usb/core/hub.c:5553 process_one_work+0x945/0x15c0 kernel/workqueue.c:2264 worker_thread+0x96/0xe20 kernel/workqueue.c:2410 kthread+0x318/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 The buggy address belongs to the object at ffff8881c9c0f200 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 160 bytes inside of 192-byte region [ffff8881c9c0f200, ffff8881c9c0f2c0) The buggy address belongs to the page: page:ffffea00072703c0 refcount:1 mapcount:0 mapping:ffff8881da002a00 index:0x0 raw: 0200000000000200 ffffea000768c540 0000000500000005 ffff8881da002a00 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881c9c0f180: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc ffff8881c9c0f200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8881c9c0f280: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8881c9c0f300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881c9c0f380: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================