==================================================================
BUG: KASAN: use-after-free in hid_report_len include/linux/hid.h:1202 [inline]
BUG: KASAN: use-after-free in steam_send_report+0x2d7/0x310 drivers/hid/hid-steam.c:178
Read of size 4 at addr ffff88811f04e834 by task udevd/533

CPU: 0 PID: 533 Comm: udevd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0xee/0x150 lib/dump_stack.c:106
 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0xf1/0x140 mm/kasan/report.c:444
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
 hid_report_len include/linux/hid.h:1202 [inline]
 steam_send_report+0x2d7/0x310 drivers/hid/hid-steam.c:178
 steam_send_report_byte drivers/hid/hid-steam.c:212 [inline]
 steam_set_lizard_mode drivers/hid/hid-steam.c:285 [inline]
 steam_input_open+0xde/0x160 drivers/hid/hid-steam.c:299
 input_open_device+0x16d/0x2f0 drivers/input/input.c:640
 evdev_open_device drivers/input/evdev.c:404 [inline]
 evdev_open+0x4b1/0x5c0 drivers/input/evdev.c:491
 chrdev_open+0x597/0x670 fs/char_dev.c:414
 do_dentry_open+0x834/0x1010 fs/open.c:828
 vfs_open+0x73/0x80 fs/open.c:958
 do_open fs/namei.c:3616 [inline]
 path_openat+0x2646/0x2f10 fs/namei.c:3750
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3777
 do_sys_openat2+0x14c/0x7b0 fs/open.c:1234
 do_sys_open fs/open.c:1250 [inline]
 __do_sys_openat fs/open.c:1266 [inline]
 __se_sys_openat fs/open.c:1261 [inline]
 __x64_sys_openat+0x136/0x160 fs/open.c:1261
 x64_sys_call+0x219/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2377be3407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffc527161d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f2377af5880 RCX: 00007f2377be3407
RDX: 0000000000080000 RSI: 00005613d1253140 RDI: ffffffffffffff9c
RBP: 00005613d12537a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00005613bef400c8
R13: 00005613bef400ce R14: 00007ffc527167d0 R15: 00005613bef46bcc
 </TASK>

Allocated by task 42:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:433 [inline]
 ____kasan_kmalloc mm/kasan/common.c:512 [inline]
 __kasan_kmalloc+0xda/0x110 mm/kasan/common.c:521
 kasan_kmalloc include/linux/kasan.h:227 [inline]
 kmem_cache_alloc_trace+0x119/0x270 mm/slub.c:3274
 kmalloc include/linux/slab.h:619 [inline]
 kzalloc include/linux/slab.h:750 [inline]
 hid_register_report drivers/hid/hid-core.c:70 [inline]
 hid_add_field+0x2b2/0x19f0 drivers/hid/hid-core.c:270
 hid_parser_main+0x2a5/0xa90 drivers/hid/hid-core.c:-1
 hid_open_report+0x838/0xea0 drivers/hid/hid-core.c:1270
 hid_parse include/linux/hid.h:1064 [inline]
 steam_probe+0x78/0xb10 drivers/hid/hid-steam.c:721
 hid_device_probe+0x287/0x380 drivers/hid/hid-core.c:2312
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x285/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x198/0x280 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:785
 __device_attach_driver+0x2a6/0x460 drivers/base/dd.c:907
 bus_for_each_drv+0x175/0x200 drivers/base/bus.c:429
 __device_attach+0x2a2/0x400 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xc0/0x1e0 drivers/base/bus.c:489
 device_add+0xb31/0xed0 drivers/base/core.c:3422
 hid_add_device+0x356/0x4b0 drivers/hid/hid-core.c:2462
 usbhid_probe+0xb2e/0xee0 drivers/hid/usbhid/hid-core.c:1427
 usb_probe_interface+0x5ff/0xae0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x285/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x198/0x280 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:785
 __device_attach_driver+0x2a6/0x460 drivers/base/dd.c:907
 bus_for_each_drv+0x175/0x200 drivers/base/bus.c:429
 __device_attach+0x2a2/0x400 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xc0/0x1e0 drivers/base/bus.c:489
 device_add+0xb31/0xed0 drivers/base/core.c:3422
 usb_set_configuration+0x19c2/0x1f10 drivers/usb/core/message.c:2165
 usb_generic_driver_probe+0x91/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x148/0x260 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x285/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x198/0x280 drivers/base/dd.c:755
 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:785
 __device_attach_driver+0x2a6/0x460 drivers/base/dd.c:907
 bus_for_each_drv+0x175/0x200 drivers/base/bus.c:429
 __device_attach+0x2a2/0x400 drivers/base/dd.c:979
 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1028
 bus_probe_device+0xc0/0x1e0 drivers/base/bus.c:489
 device_add+0xb31/0xed0 drivers/base/core.c:3422
 usb_new_device+0xd06/0x1620 drivers/usb/core/hub.c:2638
 hub_port_connect drivers/usb/core/hub.c:5555 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5695 [inline]
 port_event drivers/usb/core/hub.c:5861 [inline]
 hub_event+0x29c4/0x4480 drivers/usb/core/hub.c:5943
 process_one_work+0x6be/0xba0 kernel/workqueue.c:2325
 worker_thread+0xa59/0x1200 kernel/workqueue.c:2472
 kthread+0x411/0x500 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

Freed by task 42:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4a/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:365
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
 kasan_slab_free include/linux/kasan.h:193 [inline]
 slab_free_hook mm/slub.c:1728 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1754
 slab_free mm/slub.c:3526 [inline]
 kfree+0xc4/0x270 mm/slub.c:4588
 hid_free_report drivers/hid/hid-core.c:666 [inline]
 hid_close_report+0x4df/0x650 drivers/hid/hid-core.c:683
 hid_device_remove+0x26a/0x390 drivers/hid/hid-core.c:2344
 __device_release_driver drivers/base/dd.c:1227 [inline]
 device_release_driver_internal+0x483/0x760 drivers/base/dd.c:1262
 device_release_driver+0x19/0x20 drivers/base/dd.c:1285
 bus_remove_device+0x2dd/0x340 drivers/base/bus.c:531
 device_del+0x696/0xe90 drivers/base/core.c:3610
 hid_remove_device drivers/hid/hid-core.c:2510 [inline]
 hid_destroy_device+0x6a/0x110 drivers/hid/hid-core.c:2529
 usbhid_disconnect+0x9f/0xc0 drivers/hid/usbhid/hid-core.c:1454
 usb_unbind_interface+0x212/0x8c0 drivers/usb/core/driver.c:458
 __device_release_driver drivers/base/dd.c:1229 [inline]
 device_release_driver_internal+0x4c1/0x760 drivers/base/dd.c:1262
 device_release_driver+0x19/0x20 drivers/base/dd.c:1285
 bus_remove_device+0x2dd/0x340 drivers/base/bus.c:531
 device_del+0x696/0xe90 drivers/base/core.c:3610
 usb_disable_device+0x3a8/0x750 drivers/usb/core/message.c:1414
 usb_disconnect+0x31e/0x850 drivers/usb/core/hub.c:2288
 hub_port_connect drivers/usb/core/hub.c:5394 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5695 [inline]
 port_event drivers/usb/core/hub.c:5861 [inline]
 hub_event+0x1a96/0x4480 drivers/usb/core/hub.c:5943
 process_one_work+0x6be/0xba0 kernel/workqueue.c:2325
 process_scheduled_works kernel/workqueue.c:2388 [inline]
 worker_thread+0xd7b/0x1200 kernel/workqueue.c:2474
 kthread+0x411/0x500 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

The buggy address belongs to the object at ffff88811f04e000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 2100 bytes inside of
 4096-byte region [ffff88811f04e000, ffff88811f04f000)
The buggy address belongs to the page:
page:ffffea00047c1200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11f048
head:ffffea00047c1200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100043380
raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 411, ts 50821159108, free_ts 50797055219
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2605
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2611
 get_page_from_freelist+0x2cc5/0x2d50 mm/page_alloc.c:4485
 __alloc_pages+0x18f/0x440 mm/page_alloc.c:5808
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1937 [inline]
 new_slab+0xa1/0x4d0 mm/slub.c:2000
 ___slab_alloc+0x381/0x810 mm/slub.c:3033
 __slab_alloc+0x49/0x90 mm/slub.c:3120
 slab_alloc_node mm/slub.c:3211 [inline]
 slab_alloc mm/slub.c:3255 [inline]
 kmem_cache_alloc_trace+0x146/0x270 mm/slub.c:3272
 kmalloc include/linux/slab.h:619 [inline]
 kzalloc include/linux/slab.h:750 [inline]
 kernfs_iop_get_link+0x66/0x600 fs/kernfs/symlink.c:136
 vfs_readlink+0x171/0x3d0 fs/namei.c:5089
 do_readlinkat+0x23b/0x480 fs/stat.c:454
 __do_sys_readlink fs/stat.c:475 [inline]
 __se_sys_readlink fs/stat.c:472 [inline]
 __x64_sys_readlink+0x7f/0x90 fs/stat.c:472
 x64_sys_call+0x93c/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:90
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1472 [inline]
 free_pcp_prepare mm/page_alloc.c:1544 [inline]
 free_unref_page_prepare+0x542/0x550 mm/page_alloc.c:3534
 free_unref_page+0xa2/0x550 mm/page_alloc.c:3616
 free_the_page mm/page_alloc.c:805 [inline]
 __free_pages+0x6c/0x100 mm/page_alloc.c:5884
 __free_slab+0xe8/0x1e0 mm/slub.c:2025
 free_slab mm/slub.c:2040 [inline]
 discard_slab+0x29/0x40 mm/slub.c:2046
 __slab_free+0x211/0x290 mm/slub.c:3431
 do_slab_free mm/slub.c:3514 [inline]
 ___cache_free+0x104/0x120 mm/slub.c:3535
 qlink_free+0x4d/0x90 mm/kasan/quarantine.c:157
 qlist_free_all+0x5f/0xb0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x14a/0x170 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xf0 mm/kasan/common.c:443
 kasan_slab_alloc include/linux/kasan.h:217 [inline]
 slab_post_alloc_hook+0x4f/0x2b0 mm/slab.h:550
 slab_alloc_node mm/slub.c:3245 [inline]
 slab_alloc mm/slub.c:3255 [inline]
 kmem_cache_alloc+0xf7/0x260 mm/slub.c:3260
 getname_flags+0xb9/0x500 fs/namei.c:138
 getname+0x19/0x20 fs/namei.c:217
 do_sys_openat2+0xd9/0x7b0 fs/open.c:1228

Memory state around the buggy address:
 ffff88811f04e700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88811f04e780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88811f04e800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                     ^
 ffff88811f04e880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88811f04e900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
hid 0003:28DE:1102.0006: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.0006: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.0006: No HID_FEATURE_REPORT submitted -  nothing to read
hid 0003:28DE:1102.0006: No HID_FEATURE_REPORT submitted -  nothing to read