==================================================================
BUG: KASAN: use-after-free in memcmp lib/string.c:970 [inline]
BUG: KASAN: use-after-free in bcmp+0x210/0x230 lib/string.c:991
Read of size 1 at addr ffff888103d8117a by task kworker/1:1/39

CPU: 1 PID: 39 Comm: kworker/1:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 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+0x10f/0x150 mm/kasan/report.c:444
 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306
 memcmp lib/string.c:970 [inline]
 bcmp+0x210/0x230 lib/string.c:991
 sony_check_add_dev_list drivers/hid/hid-sony.c:2542 [inline]
 sony_check_add drivers/hid/hid-sony.c:2673 [inline]
 sony_input_configured+0x6a0/0x3900 drivers/hid/hid-sony.c:2752
 hidinput_connect+0x1f4f/0x2cc0 drivers/hid/hid-input.c:2047
 hid_connect+0x479/0xe30 drivers/hid/hid-core.c:2021
 hid_hw_start+0xaa/0x130 drivers/hid/hid-core.c:2128
 sony_probe+0x23c/0xcf0 drivers/hid/hid-sony.c:3024
 hid_device_probe+0x28d/0x390 drivers/hid/hid-core.c:2363
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x27d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x193/0x270 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+0x184/0x210 drivers/base/bus.c:429
 __device_attach+0x2b0/0x420 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+0xaef/0xe90 drivers/base/core.c:3422
 hid_add_device+0x349/0x4b0 drivers/hid/hid-core.c:2513
 usbhid_probe+0xb93/0xf30 drivers/hid/usbhid/hid-core.c:1442
 usb_probe_interface+0x60f/0xb20 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x27d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x193/0x270 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+0x184/0x210 drivers/base/bus.c:429
 __device_attach+0x2b0/0x420 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+0xaef/0xe90 drivers/base/core.c:3422
 usb_set_configuration+0x1a01/0x1f70 drivers/usb/core/message.c:2223
 usb_generic_driver_probe+0x91/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x143/0x250 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x27d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x193/0x270 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+0x184/0x210 drivers/base/bus.c:429
 __device_attach+0x2b0/0x420 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+0xaef/0xe90 drivers/base/core.c:3422
 usb_new_device+0xa1f/0x1720 drivers/usb/core/hub.c:2643
 hub_port_connect drivers/usb/core/hub.c:5560 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5700 [inline]
 port_event drivers/usb/core/hub.c:5866 [inline]
 hub_event+0x291b/0x43f0 drivers/usb/core/hub.c:5948
 process_one_work+0x6c8/0xbb0 kernel/workqueue.c:2328
 worker_thread+0xaa0/0x1250 kernel/workqueue.c:2475
 kthread+0x3f5/0x4f0 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

Allocated by task 20:
 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+0xd4/0x100 mm/kasan/common.c:521
 kasan_kmalloc include/linux/kasan.h:227 [inline]
 __kmalloc_track_caller+0x13c/0x2c0 mm/slub.c:4959
 alloc_dr drivers/base/devres.c:116 [inline]
 devm_kmalloc+0x50/0x150 drivers/base/devres.c:831
 devm_kzalloc include/linux/device.h:210 [inline]
 sony_probe+0xfb/0xcf0 drivers/hid/hid-sony.c:2992
 hid_device_probe+0x28d/0x390 drivers/hid/hid-core.c:2363
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x27d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x193/0x270 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+0x184/0x210 drivers/base/bus.c:429
 __device_attach+0x2b0/0x420 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+0xaef/0xe90 drivers/base/core.c:3422
 hid_add_device+0x349/0x4b0 drivers/hid/hid-core.c:2513
 usbhid_probe+0xb93/0xf30 drivers/hid/usbhid/hid-core.c:1442
 usb_probe_interface+0x60f/0xb20 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x27d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x193/0x270 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+0x184/0x210 drivers/base/bus.c:429
 __device_attach+0x2b0/0x420 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+0xaef/0xe90 drivers/base/core.c:3422
 usb_set_configuration+0x1a01/0x1f70 drivers/usb/core/message.c:2223
 usb_generic_driver_probe+0x91/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x143/0x250 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x27d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x193/0x270 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+0x184/0x210 drivers/base/bus.c:429
 __device_attach+0x2b0/0x420 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+0xaef/0xe90 drivers/base/core.c:3422
 usb_new_device+0xa1f/0x1720 drivers/usb/core/hub.c:2643
 hub_port_connect drivers/usb/core/hub.c:5560 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5700 [inline]
 port_event drivers/usb/core/hub.c:5866 [inline]
 hub_event+0x291b/0x43f0 drivers/usb/core/hub.c:5948
 process_one_work+0x6c8/0xbb0 kernel/workqueue.c:2328
 worker_thread+0xaa0/0x1250 kernel/workqueue.c:2475
 kthread+0x3f5/0x4f0 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

Freed by task 20:
 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
 release_nodes+0xe8/0x220 drivers/base/devres.c:501
 devres_release_all+0x148/0x1b0 drivers/base/devres.c:530
 really_probe+0x346/0x970 drivers/base/dd.c:667
 __driver_probe_device+0x193/0x270 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+0x184/0x210 drivers/base/bus.c:429
 __device_attach+0x2b0/0x420 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+0xaef/0xe90 drivers/base/core.c:3422
 hid_add_device+0x349/0x4b0 drivers/hid/hid-core.c:2513
 usbhid_probe+0xb93/0xf30 drivers/hid/usbhid/hid-core.c:1442
 usb_probe_interface+0x60f/0xb20 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x27d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x193/0x270 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+0x184/0x210 drivers/base/bus.c:429
 __device_attach+0x2b0/0x420 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+0xaef/0xe90 drivers/base/core.c:3422
 usb_set_configuration+0x1a01/0x1f70 drivers/usb/core/message.c:2223
 usb_generic_driver_probe+0x91/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x143/0x250 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x27d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x193/0x270 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+0x184/0x210 drivers/base/bus.c:429
 __device_attach+0x2b0/0x420 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+0xaef/0xe90 drivers/base/core.c:3422
 usb_new_device+0xa1f/0x1720 drivers/usb/core/hub.c:2643
 hub_port_connect drivers/usb/core/hub.c:5560 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5700 [inline]
 port_event drivers/usb/core/hub.c:5866 [inline]
 hub_event+0x291b/0x43f0 drivers/usb/core/hub.c:5948
 process_one_work+0x6c8/0xbb0 kernel/workqueue.c:2328
 worker_thread+0xaa0/0x1250 kernel/workqueue.c:2475
 kthread+0x3f5/0x4f0 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

The buggy address belongs to the object at ffff888103d81000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 378 bytes inside of
 1024-byte region [ffff888103d81000, ffff888103d81400)
The buggy address belongs to the page:
page:ffffea00040f6000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x103d80
head:ffffea00040f6000 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100043080
raw: 0000000000000000 0000000000100010 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 20, ts 25596717429, free_ts 24260948818
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2607
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2613
 get_page_from_freelist+0x2c3a/0x2cd0 mm/page_alloc.c:4487
 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5824
 alloc_slab_page mm/slub.c:-1 [inline]
 allocate_slab mm/slub.c:1937 [inline]
 new_slab+0xa0/0x4d0 mm/slub.c:2000
 ___slab_alloc+0x3ac/0x840 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]
 __kmalloc_track_caller+0x169/0x2c0 mm/slub.c:4954
 alloc_dr drivers/base/devres.c:116 [inline]
 devm_kmalloc+0x50/0x150 drivers/base/devres.c:831
 devm_kzalloc include/linux/device.h:210 [inline]
 sony_probe+0xfb/0xcf0 drivers/hid/hid-sony.c:2992
 hid_device_probe+0x28d/0x390 drivers/hid/hid-core.c:2363
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x27d/0x970 drivers/base/dd.c:595
 __driver_probe_device+0x193/0x270 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+0x184/0x210 drivers/base/bus.c:429
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1474 [inline]
 free_pcp_prepare mm/page_alloc.c:1546 [inline]
 free_unref_page_prepare+0x5fa/0x600 mm/page_alloc.c:3536
 free_unref_page+0xae/0x540 mm/page_alloc.c:3618
 free_the_page mm/page_alloc.c:805 [inline]
 __free_pages+0x6c/0x100 mm/page_alloc.c:5900
 __free_slab+0xe5/0x1e0 mm/slub.c:2025
 free_slab mm/slub.c:2040 [inline]
 discard_slab mm/slub.c:2046 [inline]
 __unfreeze_partials+0x15a/0x190 mm/slub.c:2532
 put_cpu_partial+0xc6/0x120 mm/slub.c:2612
 __slab_free+0x1d4/0x290 mm/slub.c:3395
 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/0xe0 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]
 __kmalloc+0x120/0x2c0 mm/slub.c:4432
 __kmalloc_node include/linux/slab.h:487 [inline]
 kmalloc_node include/linux/slab.h:642 [inline]
 kvmalloc_node+0x211/0x320 mm/util.c:621
 kvmalloc include/linux/mm.h:862 [inline]
 groups_alloc kernel/groups.c:18 [inline]
 __do_sys_setgroups kernel/groups.c:195 [inline]
 __se_sys_setgroups+0xf2/0x4e0 kernel/groups.c:185

Memory state around the buggy address:
 ffff888103d81000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888103d81080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888103d81100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                                ^
 ffff888103d81180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888103d81200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
sony 0003:054C:042F.0002: can't set operational mode: step 3, ignoring
sony 0003:054C:042F.0002: No inputs registered, leaving
sony 0003:054C:042F.0002: hidraw0: USB HID v0.00 Joystick [HID 054c:042f] on usb-dummy_hcd.0-1/input0
sony 0003:054C:042F.0002: failed to claim input
usb 1-1: USB disconnect, device number 3
usb 1-1: new high-speed USB device number 4 using dummy_hcd
usb 1-1: config 0 interface 0 altsetting 12 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 1-1: config 0 interface 0 altsetting 12 endpoint 0x81 has invalid wMaxPacketSize 0
usb 1-1: config 0 interface 0 altsetting 12 has 1 endpoint descriptor, different from the interface descriptor's value: 2
usb 1-1: config 0 interface 0 has no altsetting 0
usb 1-1: New USB device found, idVendor=054c, idProduct=042f, bcdDevice= 0.00
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
sony 0003:054C:042F.0003: can't set operational mode: step 3, ignoring
sony 0003:054C:042F.0003: No inputs registered, leaving
sony 0003:054C:042F.0003: hidraw0: USB HID v0.00 Joystick [HID 054c:042f] on usb-dummy_hcd.0-1/input0
sony 0003:054C:042F.0003: failed to claim input
usb 1-1: USB disconnect, device number 4
usb 1-1: new high-speed USB device number 5 using dummy_hcd
usb 1-1: config 0 interface 0 altsetting 12 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 1-1: config 0 interface 0 altsetting 12 endpoint 0x81 has invalid wMaxPacketSize 0
usb 1-1: config 0 interface 0 altsetting 12 has 1 endpoint descriptor, different from the interface descriptor's value: 2
usb 1-1: config 0 interface 0 has no altsetting 0
usb 1-1: New USB device found, idVendor=054c, idProduct=042f, bcdDevice= 0.00
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
sony 0003:054C:042F.0004: can't set operational mode: step 3, ignoring
sony 0003:054C:042F.0004: No inputs registered, leaving
sony 0003:054C:042F.0004: hidraw0: USB HID v0.00 Joystick [HID 054c:042f] on usb-dummy_hcd.0-1/input0
sony 0003:054C:042F.0004: failed to claim input
usb 1-1: USB disconnect, device number 5
usb 1-1: new high-speed USB device number 6 using dummy_hcd
usb 1-1: config 0 interface 0 altsetting 12 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 1-1: config 0 interface 0 altsetting 12 endpoint 0x81 has invalid wMaxPacketSize 0
usb 1-1: config 0 interface 0 altsetting 12 has 1 endpoint descriptor, different from the interface descriptor's value: 2
usb 1-1: config 0 interface 0 has no altsetting 0
usb 1-1: New USB device found, idVendor=054c, idProduct=042f, bcdDevice= 0.00
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??
sony 0003:054C:042F.0005: can't set operational mode: step 3, ignoring
sony 0003:054C:042F.0005: No inputs registered, leaving
sony 0003:054C:042F.0005: hidraw0: USB HID v0.00 Joystick [HID 054c:042f] on usb-dummy_hcd.0-1/input0
sony 0003:054C:042F.0005: failed to claim input
usb 1-1: USB disconnect, device number 6
usb 1-1: new high-speed USB device number 7 using dummy_hcd
usb 1-1: config 0 interface 0 altsetting 12 endpoint 0x81 has an invalid bInterval 0, changing to 7
usb 1-1: config 0 interface 0 altsetting 12 endpoint 0x81 has invalid wMaxPacketSize 0
usb 1-1: config 0 interface 0 altsetting 12 has 1 endpoint descriptor, different from the interface descriptor's value: 2
usb 1-1: config 0 interface 0 has no altsetting 0
usb 1-1: New USB device found, idVendor=054c, idProduct=042f, bcdDevice= 0.00
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: config 0 descriptor??