================================================================== BUG: KASAN: slab-use-after-free in memcmp lib/string.c:683 [inline] BUG: KASAN: slab-use-after-free in bcmp+0x214/0x240 lib/string.c:704 Read of size 1 at addr ffff88810e7c2522 by task kworker/1:3/316 CPU: 1 UID: 0 PID: 316 Comm: kworker/1:3 Not tainted syzkaller #0 bc7b6724338d5534643cc89cfe391bc2161f9bdd Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack+0x21/0x30 lib/dump_stack.c:94 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120 print_address_description+0x71/0x210 mm/kasan/report.c:377 print_report+0x4a/0x70 mm/kasan/report.c:481 kasan_report+0x162/0x1a0 mm/kasan/report.c:594 __asan_report_load1_noabort+0x18/0x20 mm/kasan/report_generic.c:378 memcmp lib/string.c:683 [inline] bcmp+0x214/0x240 lib/string.c:704 memcmp include/linux/fortify-string.h:715 [inline] sony_check_add_dev_list drivers/hid/hid-sony.c:1723 [inline] sony_check_add drivers/hid/hid-sony.c:1829 [inline] sony_input_configured+0x2e0/0x3270 drivers/hid/hid-sony.c:1904 hidinput_connect+0x24a2/0x3290 drivers/hid/hid-input.c:2351 hid_connect+0x4a8/0x1c10 drivers/hid/hid-core.c:2294 hid_hw_start+0xcb/0x160 drivers/hid/hid-core.c:2409 sony_probe+0x236/0x5f0 drivers/hid/hid-sony.c:2102 __hid_device_probe drivers/hid/hid-core.c:2760 [inline] hid_device_probe+0x2ce/0x5f0 drivers/hid/hid-core.c:2797 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2e1/0x8b0 drivers/base/dd.c:657 __driver_probe_device+0x193/0x280 drivers/base/dd.c:799 driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829 __device_attach_driver+0x2f1/0x4b0 drivers/base/dd.c:957 bus_for_each_drv+0x264/0x300 drivers/base/bus.c:459 __device_attach+0x2c4/0x3c0 drivers/base/dd.c:1029 device_initial_probe+0x1e/0x30 drivers/base/dd.c:1078 bus_probe_device+0x18b/0x270 drivers/base/bus.c:534 device_add+0x7fd/0xbf0 drivers/base/core.c:3692 hid_add_device+0x3c4/0x5a0 drivers/hid/hid-core.c:2943 usbhid_probe+0xdca/0x1310 drivers/hid/usbhid/hid-core.c:1451 usb_probe_interface+0x6ab/0xbf0 drivers/usb/core/driver.c:400 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2e1/0x8b0 drivers/base/dd.c:657 __driver_probe_device+0x193/0x280 drivers/base/dd.c:799 driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829 __device_attach_driver+0x2f1/0x4b0 drivers/base/dd.c:957 bus_for_each_drv+0x264/0x300 drivers/base/bus.c:459 __device_attach+0x2c4/0x3c0 drivers/base/dd.c:1029 device_initial_probe+0x1e/0x30 drivers/base/dd.c:1078 bus_probe_device+0x18b/0x270 drivers/base/bus.c:534 device_add+0x7fd/0xbf0 drivers/base/core.c:3692 usb_set_configuration+0x1aad/0x2080 drivers/usb/core/message.c:2268 usb_generic_driver_probe+0x95/0x160 drivers/usb/core/generic.c:254 usb_probe_device+0x1ef/0x3b0 drivers/usb/core/driver.c:295 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2e1/0x8b0 drivers/base/dd.c:657 __driver_probe_device+0x193/0x280 drivers/base/dd.c:799 driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829 __device_attach_driver+0x2f1/0x4b0 drivers/base/dd.c:957 bus_for_each_drv+0x264/0x300 drivers/base/bus.c:459 __device_attach+0x2c4/0x3c0 drivers/base/dd.c:1029 device_initial_probe+0x1e/0x30 drivers/base/dd.c:1078 bus_probe_device+0x18b/0x270 drivers/base/bus.c:534 device_add+0x7fd/0xbf0 drivers/base/core.c:3692 usb_new_device+0x98d/0x1500 drivers/usb/core/hub.c:2703 hub_port_connect drivers/usb/core/hub.c:5574 [inline] hub_port_connect_change drivers/usb/core/hub.c:5714 [inline] port_event drivers/usb/core/hub.c:5878 [inline] hub_event+0x2dbd/0x4360 drivers/usb/core/hub.c:5960 process_one_work kernel/workqueue.c:3273 [inline] process_scheduled_works+0x7f7/0x1060 kernel/workqueue.c:3354 worker_thread+0xc99/0x13f0 kernel/workqueue.c:3435 kthread+0x2c7/0x360 kernel/kthread.c:389 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Allocated by task 10: kasan_save_stack mm/kasan/common.c:49 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:70 kasan_save_alloc_info+0x3a/0x50 mm/kasan/generic.c:565 poison_kmalloc_redzone mm/kasan/common.c:379 [inline] __kasan_kmalloc+0x96/0xb0 mm/kasan/common.c:396 kasan_kmalloc include/linux/kasan.h:261 [inline] __do_kmalloc_node mm/slub.c:4395 [inline] __kmalloc_node_track_caller_noprof+0x24e/0x4f0 mm/slub.c:4414 alloc_dr drivers/base/devres.c:119 [inline] devm_kmalloc+0x79/0x250 drivers/base/devres.c:837 devm_kzalloc include/linux/device/devres.h:52 [inline] sony_probe+0xfa/0x5f0 drivers/hid/hid-sony.c:2070 __hid_device_probe drivers/hid/hid-core.c:2760 [inline] hid_device_probe+0x2ce/0x5f0 drivers/hid/hid-core.c:2797 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2e1/0x8b0 drivers/base/dd.c:657 __driver_probe_device+0x193/0x280 drivers/base/dd.c:799 driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829 __device_attach_driver+0x2f1/0x4b0 drivers/base/dd.c:957 bus_for_each_drv+0x264/0x300 drivers/base/bus.c:459 __device_attach+0x2c4/0x3c0 drivers/base/dd.c:1029 device_initial_probe+0x1e/0x30 drivers/base/dd.c:1078 bus_probe_device+0x18b/0x270 drivers/base/bus.c:534 device_add+0x7fd/0xbf0 drivers/base/core.c:3692 hid_add_device+0x3c4/0x5a0 drivers/hid/hid-core.c:2943 usbhid_probe+0xdca/0x1310 drivers/hid/usbhid/hid-core.c:1451 usb_probe_interface+0x6ab/0xbf0 drivers/usb/core/driver.c:400 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2e1/0x8b0 drivers/base/dd.c:657 __driver_probe_device+0x193/0x280 drivers/base/dd.c:799 driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829 __device_attach_driver+0x2f1/0x4b0 drivers/base/dd.c:957 bus_for_each_drv+0x264/0x300 drivers/base/bus.c:459 __device_attach+0x2c4/0x3c0 drivers/base/dd.c:1029 device_initial_probe+0x1e/0x30 drivers/base/dd.c:1078 bus_probe_device+0x18b/0x270 drivers/base/bus.c:534 device_add+0x7fd/0xbf0 drivers/base/core.c:3692 usb_set_configuration+0x1aad/0x2080 drivers/usb/core/message.c:2268 usb_generic_driver_probe+0x95/0x160 drivers/usb/core/generic.c:254 usb_probe_device+0x1ef/0x3b0 drivers/usb/core/driver.c:295 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2e1/0x8b0 drivers/base/dd.c:657 __driver_probe_device+0x193/0x280 drivers/base/dd.c:799 driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829 __device_attach_driver+0x2f1/0x4b0 drivers/base/dd.c:957 bus_for_each_drv+0x264/0x300 drivers/base/bus.c:459 __device_attach+0x2c4/0x3c0 drivers/base/dd.c:1029 device_initial_probe+0x1e/0x30 drivers/base/dd.c:1078 bus_probe_device+0x18b/0x270 drivers/base/bus.c:534 device_add+0x7fd/0xbf0 drivers/base/core.c:3692 usb_new_device+0x98d/0x1500 drivers/usb/core/hub.c:2703 hub_port_connect drivers/usb/core/hub.c:5574 [inline] hub_port_connect_change drivers/usb/core/hub.c:5714 [inline] port_event drivers/usb/core/hub.c:5878 [inline] hub_event+0x2dbd/0x4360 drivers/usb/core/hub.c:5960 process_one_work kernel/workqueue.c:3273 [inline] process_scheduled_works+0x7f7/0x1060 kernel/workqueue.c:3354 worker_thread+0xc99/0x13f0 kernel/workqueue.c:3435 kthread+0x2c7/0x360 kernel/kthread.c:389 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Freed by task 10: kasan_save_stack mm/kasan/common.c:49 [inline] kasan_save_track+0x3e/0x80 mm/kasan/common.c:70 kasan_save_free_info+0x44/0x50 mm/kasan/generic.c:579 poison_slab_object mm/kasan/common.c:249 [inline] __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:266 kasan_slab_free include/linux/kasan.h:234 [inline] slab_free_hook mm/slub.c:2445 [inline] slab_free mm/slub.c:4714 [inline] kfree+0x158/0x440 mm/slub.c:4875 release_nodes drivers/base/devres.c:506 [inline] devres_release_group+0x35c/0x4c0 drivers/base/devres.c:689 __hid_device_probe drivers/hid/hid-core.c:2776 [inline] hid_device_probe+0x52f/0x5f0 drivers/hid/hid-core.c:2797 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2e1/0x8b0 drivers/base/dd.c:657 __driver_probe_device+0x193/0x280 drivers/base/dd.c:799 driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829 __device_attach_driver+0x2f1/0x4b0 drivers/base/dd.c:957 bus_for_each_drv+0x264/0x300 drivers/base/bus.c:459 __device_attach+0x2c4/0x3c0 drivers/base/dd.c:1029 device_initial_probe+0x1e/0x30 drivers/base/dd.c:1078 bus_probe_device+0x18b/0x270 drivers/base/bus.c:534 device_add+0x7fd/0xbf0 drivers/base/core.c:3692 hid_add_device+0x3c4/0x5a0 drivers/hid/hid-core.c:2943 usbhid_probe+0xdca/0x1310 drivers/hid/usbhid/hid-core.c:1451 usb_probe_interface+0x6ab/0xbf0 drivers/usb/core/driver.c:400 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2e1/0x8b0 drivers/base/dd.c:657 __driver_probe_device+0x193/0x280 drivers/base/dd.c:799 driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829 __device_attach_driver+0x2f1/0x4b0 drivers/base/dd.c:957 bus_for_each_drv+0x264/0x300 drivers/base/bus.c:459 __device_attach+0x2c4/0x3c0 drivers/base/dd.c:1029 device_initial_probe+0x1e/0x30 drivers/base/dd.c:1078 bus_probe_device+0x18b/0x270 drivers/base/bus.c:534 device_add+0x7fd/0xbf0 drivers/base/core.c:3692 usb_set_configuration+0x1aad/0x2080 drivers/usb/core/message.c:2268 usb_generic_driver_probe+0x95/0x160 drivers/usb/core/generic.c:254 usb_probe_device+0x1ef/0x3b0 drivers/usb/core/driver.c:295 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2e1/0x8b0 drivers/base/dd.c:657 __driver_probe_device+0x193/0x280 drivers/base/dd.c:799 driver_probe_device+0x54/0x3f0 drivers/base/dd.c:829 __device_attach_driver+0x2f1/0x4b0 drivers/base/dd.c:957 bus_for_each_drv+0x264/0x300 drivers/base/bus.c:459 __device_attach+0x2c4/0x3c0 drivers/base/dd.c:1029 device_initial_probe+0x1e/0x30 drivers/base/dd.c:1078 bus_probe_device+0x18b/0x270 drivers/base/bus.c:534 device_add+0x7fd/0xbf0 drivers/base/core.c:3692 usb_new_device+0x98d/0x1500 drivers/usb/core/hub.c:2703 hub_port_connect drivers/usb/core/hub.c:5574 [inline] hub_port_connect_change drivers/usb/core/hub.c:5714 [inline] port_event drivers/usb/core/hub.c:5878 [inline] hub_event+0x2dbd/0x4360 drivers/usb/core/hub.c:5960 process_one_work kernel/workqueue.c:3273 [inline] process_scheduled_works+0x7f7/0x1060 kernel/workqueue.c:3354 worker_thread+0xc99/0x13f0 kernel/workqueue.c:3435 kthread+0x2c7/0x360 kernel/kthread.c:389 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 The buggy address belongs to the object at ffff88810e7c2400 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 290 bytes inside of freed 512-byte region [ffff88810e7c2400, ffff88810e7c2600) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10e7c0 head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x4000000000000040(head|zone=1) page_type: f5(slab) raw: 4000000000000040 ffff888100041c80 dead000000000100 dead000000000122 raw: 0000000000000000 0000000000100010 00000001f5000000 0000000000000000 head: 4000000000000040 ffff888100041c80 dead000000000100 dead000000000122 head: 0000000000000000 0000000000100010 00000001f5000000 0000000000000000 head: 4000000000000002 ffffea000439f001 ffffffffffffffff 0000000000000000 head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 111, tgid 111 (S10udev), ts 5031663362, free_ts 0 set_page_owner include/linux/page_owner.h:35 [inline] post_alloc_hook+0x37d/0x3b0 mm/page_alloc.c:1864 prep_new_page+0x2d/0x180 mm/page_alloc.c:1872 get_page_from_freelist+0x4aea/0x4ba0 mm/page_alloc.c:3949 __alloc_pages_noprof+0x35a/0x7e0 mm/page_alloc.c:5316 alloc_slab_page+0x6b/0x1e0 mm/slub.c:-1 allocate_slab+0x69/0x430 mm/slub.c:2687 new_slab mm/slub.c:2741 [inline] ___slab_alloc+0x591/0x8c0 mm/slub.c:3934 __slab_alloc mm/slub.c:4025 [inline] __slab_alloc_node mm/slub.c:4078 [inline] slab_alloc_node mm/slub.c:4239 [inline] __kmalloc_cache_noprof+0x2cd/0x470 mm/slub.c:4421 kmalloc_noprof include/linux/slab.h:882 [inline] kzalloc_noprof include/linux/slab.h:1117 [inline] alloc_bprm+0x8d/0xb30 fs/exec.c:1567 do_execveat_common+0x199/0xae0 fs/exec.c:1962 do_execve fs/exec.c:2085 [inline] __do_sys_execve fs/exec.c:2161 [inline] __se_sys_execve fs/exec.c:2156 [inline] __x64_sys_execve+0x96/0xb0 fs/exec.c:2156 x64_sys_call+0x12c4/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:60 do_syscall_x64 arch/x86/entry/common.c:47 [inline] do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78 entry_SYSCALL_64_after_hwframe+0x76/0x7e page_owner free stack trace missing Memory state around the buggy address: ffff88810e7c2400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88810e7c2480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88810e7c2500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88810e7c2580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88810e7c2600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== sony 0003:054C:042F.0002: can't set operational mode: step 2 sony 0003:054C:042F.0002: Failed to set controller into operational mode sony 0003:054C:042F.0002: hidraw0: USB HID v0.00 Joystick [HID 054c:042f] on usb-dummy_hcd.2-1/input0 sony 0003:054C:042F.0002: failed to claim input usb 3-1: USB disconnect, device number 2