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BUG: KASAN: slab-use-after-free in report_descriptor_read+0xbb/0x100 drivers/hid/hid-core.c:2279
Read of size 24 at addr ffff888113bdf500 by task fido_id/28045

CPU: 1 UID: 0 PID: 28045 Comm: fido_id Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x13d/0x4b0 mm/kasan/report.c:482
 kasan_report+0xdf/0x1c0 mm/kasan/report.c:595
 check_region_inline mm/kasan/generic.c:186 [inline]
 kasan_check_range+0x10f/0x1e0 mm/kasan/generic.c:200
 __asan_memcpy+0x23/0x60 mm/kasan/shadow.c:105
 report_descriptor_read+0xbb/0x100 drivers/hid/hid-core.c:2279
 sysfs_kf_bin_read+0x156/0x210 fs/sysfs/file.c:102
 kernfs_file_read_iter fs/kernfs/file.c:262 [inline]
 kernfs_fop_read_iter+0x32b/0x610 fs/kernfs/file.c:291
 new_sync_read fs/read_write.c:493 [inline]
 vfs_read+0x82e/0xb40 fs/read_write.c:574
 ksys_read+0x12a/0x250 fs/read_write.c:716
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x119/0x710 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc1dec36407
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:00007ffcb31b6020 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fc1deb48880 RCX: 00007fc1dec36407
RDX: 0000000000001000 RSI: 00007ffcb31b6070 RDI: 0000000000000004
RBP: 000055652865e2c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000055652865d4c0
R13: 00007ffcb31b6070 R14: 0000000000000004 R15: 0000556525bd74d8
 </TASK>

Allocated by task 5244:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:409 [inline]
 __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:426
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __do_kmalloc_node mm/slub.c:5531 [inline]
 __kmalloc_node_track_caller_noprof+0x323/0x810 mm/slub.c:5662
 kmemdup_noprof+0x29/0x60 mm/util.c:138
 kmemdup_noprof include/linux/fortify-string.h:713 [inline]
 hid_open_report+0x214/0x810 drivers/hid/hid-core.c:1382
 hid_parse include/linux/hid.h:1208 [inline]
 magicmouse_probe+0x232/0xae0 drivers/hid/hid-magicmouse.c:917
 __hid_device_probe drivers/hid/hid-core.c:2839 [inline]
 hid_device_probe+0x4fe/0x850 drivers/hid/hid-core.c:2878
 call_driver_probe drivers/base/dd.c:629 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:707
 __driver_probe_device+0x210/0x460 drivers/base/dd.c:869
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:899
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1027
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4c0 drivers/base/dd.c:1131
 device_initial_probe+0xaf/0xf0 drivers/base/dd.c:1190
 __bus_probe_device+0x60/0x160 drivers/base/bus.c:614
 device_add+0x121d/0x1970 drivers/base/core.c:3778
 hid_add_device+0x2bf/0x440 drivers/hid/hid-core.c:3065
 usbhid_probe+0xa64/0x10b0 drivers/hid/usbhid/hid-core.c:1459
 usb_probe_interface+0x386/0x980 drivers/usb/core/driver.c:399
 call_driver_probe drivers/base/dd.c:629 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:707
 __driver_probe_device+0x210/0x460 drivers/base/dd.c:869
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:899
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1027
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4c0 drivers/base/dd.c:1131
 device_initial_probe+0xaf/0xf0 drivers/base/dd.c:1190
 __bus_probe_device+0x60/0x160 drivers/base/bus.c:614
 device_add+0x121d/0x1970 drivers/base/core.c:3778
 usb_set_configuration+0xd97/0x1dc0 drivers/usb/core/message.c:2280
 usb_generic_driver_probe+0xa1/0xe0 drivers/usb/core/generic.c:250
 usb_probe_device+0xef/0x400 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:629 [inline]
 really_probe+0x241/0xa60 drivers/base/dd.c:707
 __driver_probe_device+0x210/0x460 drivers/base/dd.c:869
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:899
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1027
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4c0 drivers/base/dd.c:1131
 device_initial_probe+0xaf/0xf0 drivers/base/dd.c:1190
 __bus_probe_device+0x60/0x160 drivers/base/bus.c:614
 device_add+0x121d/0x1970 drivers/base/core.c:3778
 usb_new_device.part.0+0xcc2/0x1686 drivers/usb/core/hub.c:2713
 usb_new_device drivers/usb/core/hub.c:5838 [inline]
 hub_port_connect drivers/usb/core/hub.c:5585 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5725 [inline]
 port_event drivers/usb/core/hub.c:5889 [inline]
 hub_event.cold+0x51a/0xe9d drivers/usb/core/hub.c:5971
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3495
 process_scheduled_works kernel/workqueue.c:3578 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3659
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x69f/0xc90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff888113bdf500
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 0 bytes inside of
 freed 32-byte region [ffff888113bdf500, ffff888113bdf520)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x113bdf
flags: 0x200000000000000(node=0|zone=2)
page_type: f5(slab)
raw: 0200000000000000 ffff888100041780 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000400040 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2800(GFP_NOWAIT|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 2320, tgid 2320 (kworker/u8:15), ts 8920477603
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1856
 prep_new_page mm/page_alloc.c:1864 [inline]
 get_page_from_freelist+0xf4b/0x3440 mm/page_alloc.c:3935
 __alloc_frozen_pages_noprof+0x299/0x2d50 mm/page_alloc.c:5444
 alloc_slab_page mm/slub.c:3384 [inline]
 allocate_slab mm/slub.c:3499 [inline]
 new_slab+0xb1/0x6d0 mm/slub.c:3550
 refill_objects+0xe3/0x410 mm/slub.c:7539
 refill_sheaf mm/slub.c:2917 [inline]
 __pcs_replace_empty_main+0x35e/0x650 mm/slub.c:4811
 alloc_from_pcs mm/slub.c:4887 [inline]
 slab_alloc_node mm/slub.c:5021 [inline]
 __kmalloc_cache_noprof+0x49c/0x680 mm/slub.c:5676
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 slab_free_hook mm/slub.c:2732 [inline]
 slab_free mm/slub.c:6630 [inline]
 kmem_cache_free+0x3f0/0x650 mm/slub.c:6757
 file_free fs/file_table.c:104 [inline]
 __fput_deferred+0x3e9/0x4a0 fs/file_table.c:568
 fput_close+0x118/0x250 fs/file_table.c:630
 path_openat+0xd4c/0x23f0 fs/namei.c:5025
 do_file_open+0x20e/0x430 fs/namei.c:5045
 do_open_execat+0xd1/0x2f0 fs/exec.c:786
 alloc_bprm+0x2d/0x970 fs/exec.c:1514
 class_bprm_constructor fs/exec.c:1579 [inline]
 kernel_execve+0x8f/0x3a0 fs/exec.c:1976
 call_usermodehelper_exec_async+0x239/0x4b0 kernel/umh.c:107
page_owner free stack trace missing

Memory state around the buggy address:
 ffff888113bdf400: 00 00 04 fc fc fc fc fc fa fb fb fb fc fc fc fc
 ffff888113bdf480: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
>ffff888113bdf500: fb fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
                   ^
 ffff888113bdf580: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
 ffff888113bdf600: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
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