================================================================== BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:101 [inline] BUG: KASAN: use-after-free in atomic64_try_cmpxchg_acquire include/asm-generic/atomic-instrumented.h:1515 [inline] BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/asm-generic/atomic-long.h:443 [inline] BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:173 [inline] BUG: KASAN: use-after-free in mutex_lock+0x7f/0xe0 kernel/locking/mutex.c:298 Write of size 8 at addr ffff88811bae8040 by task acpid/80 CPU: 1 PID: 80 Comm: acpid Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2025 Call Trace: __dump_stack+0x21/0x24 lib/dump_stack.c:77 dump_stack_lvl+0x169/0x1d8 lib/dump_stack.c:118 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:435 [inline] kasan_report+0xe2/0x130 mm/kasan/report.c:452 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x280/0x290 mm/kasan/generic.c:189 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:101 [inline] atomic64_try_cmpxchg_acquire include/asm-generic/atomic-instrumented.h:1515 [inline] atomic_long_try_cmpxchg_acquire include/asm-generic/atomic-long.h:443 [inline] __mutex_trylock_fast kernel/locking/mutex.c:173 [inline] mutex_lock+0x7f/0xe0 kernel/locking/mutex.c:298 steam_input_open+0x91/0x160 drivers/hid/hid-steam.c:297 input_open_device+0x14c/0x2a0 drivers/input/input.c:635 evdev_open_device drivers/input/evdev.c:400 [inline] evdev_open+0x4d2/0x5e0 drivers/input/evdev.c:487 chrdev_open+0x597/0x670 fs/char_dev.c:414 do_dentry_open+0x793/0x1090 fs/open.c:819 vfs_open+0x73/0x80 fs/open.c:942 do_open fs/namei.c:3391 [inline] path_openat+0x27ad/0x3160 fs/namei.c:3509 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217 do_sys_open fs/open.c:1233 [inline] __do_sys_openat fs/open.c:1249 [inline] __se_sys_openat fs/open.c:1244 [inline] __x64_sys_openat+0x136/0x160 fs/open.c:1244 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7ff5c58dd407 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:00007ffc6058c3c0 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007ff5c5853740 RCX: 00007ff5c58dd407 RDX: 0000000000080800 RSI: 00007ffc6058c5d0 RDI: ffffffffffffff9c RBP: 00007ffc6058c5d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000020 R13: 00007ffc6058c6d0 R14: 0000555bf1dd87fe R15: 00007ffc6058c6d0 Allocated by task 0: (stack is not available) Freed by task 387: 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:362 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:370 kasan_slab_free include/linux/kasan.h:220 [inline] slab_free_hook mm/slub.c:1595 [inline] slab_free_freelist_hook+0xc5/0x190 mm/slub.c:1621 slab_free mm/slub.c:3203 [inline] kfree+0xc0/0x270 mm/slub.c:4191 release_nodes+0x753/0x7d0 drivers/base/devres.c:524 devres_release_all+0x7c/0xa0 drivers/base/devres.c:545 __device_release_driver drivers/base/dd.c:1190 [inline] device_release_driver_internal+0x4cb/0x750 drivers/base/dd.c:1221 device_release_driver+0x19/0x20 drivers/base/dd.c:1244 bus_remove_device+0x2dd/0x340 drivers/base/bus.c:535 device_del+0x696/0xed0 drivers/base/core.c:3452 hid_remove_device drivers/hid/hid-core.c:2512 [inline] hid_destroy_device+0x6a/0x110 drivers/hid/hid-core.c:2531 usbhid_disconnect+0x9f/0xc0 drivers/hid/usbhid/hid-core.c:1448 usb_unbind_interface+0x212/0x8c0 drivers/usb/core/driver.c:459 __device_release_driver drivers/base/dd.c:-1 [inline] device_release_driver_internal+0x4bc/0x750 drivers/base/dd.c:1221 device_release_driver+0x19/0x20 drivers/base/dd.c:1244 bus_remove_device+0x2dd/0x340 drivers/base/bus.c:535 device_del+0x696/0xed0 drivers/base/core.c:3452 usb_disable_device+0x3a8/0x750 drivers/usb/core/message.c:1411 usb_disconnect+0x31e/0x850 drivers/usb/core/hub.c:2310 hub_port_connect drivers/usb/core/hub.c:5338 [inline] hub_port_connect_change drivers/usb/core/hub.c:5639 [inline] port_event drivers/usb/core/hub.c:5805 [inline] hub_event+0x1a88/0x42c0 drivers/usb/core/hub.c:5887 process_one_work+0x6e1/0xba0 kernel/workqueue.c:2301 worker_thread+0xa6a/0x13b0 kernel/workqueue.c:2447 kthread+0x346/0x3d0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 The buggy address belongs to the object at ffff88811bae8000 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 64 bytes inside of 512-byte region [ffff88811bae8000, ffff88811bae8200) The buggy address belongs to the page: page:ffffea00046eba00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11bae8 head:ffffea00046eba00 order:2 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head) raw: 4000000000010200 ffffea00046eb200 0000000500000005 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 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 189, ts 6216171257, free_ts 0 set_page_owner include/linux/page_owner.h:35 [inline] post_alloc_hook mm/page_alloc.c:2456 [inline] prep_new_page+0x179/0x180 mm/page_alloc.c:2462 get_page_from_freelist+0x2235/0x23d0 mm/page_alloc.c:4254 __alloc_pages_nodemask+0x268/0x5f0 mm/page_alloc.c:5370 alloc_slab_page mm/slub.c:-1 [inline] allocate_slab mm/slub.c:1808 [inline] new_slab+0x84/0x3f0 mm/slub.c:1869 new_slab_objects mm/slub.c:2627 [inline] ___slab_alloc+0x2a6/0x450 mm/slub.c:2791 __slab_alloc+0x63/0xa0 mm/slub.c:2831 slab_alloc_node mm/slub.c:2913 [inline] slab_alloc mm/slub.c:2955 [inline] __kmalloc+0x201/0x330 mm/slub.c:4029 kmalloc_array include/linux/slab.h:592 [inline] check_load_and_stores net/core/filter.c:925 [inline] bpf_check_classic net/core/filter.c:1134 [inline] bpf_prepare_filter+0x5f3/0x1080 net/core/filter.c:1328 bpf_prog_create_from_user+0x2c7/0x410 net/core/filter.c:1448 seccomp_prepare_filter kernel/seccomp.c:661 [inline] seccomp_prepare_user_filter kernel/seccomp.c:698 [inline] seccomp_set_mode_filter kernel/seccomp.c:1813 [inline] do_seccomp+0x7ad/0x1400 kernel/seccomp.c:1933 prctl_set_seccomp+0x4c/0x60 kernel/seccomp.c:1986 __do_sys_prctl kernel/sys.c:2457 [inline] __se_sys_prctl+0x6c1/0x1080 kernel/sys.c:2375 __x64_sys_prctl+0xbf/0xd0 kernel/sys.c:2375 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb page_owner free stack trace missing Memory state around the buggy address: ffff88811bae7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88811bae7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88811bae8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88811bae8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88811bae8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== hid 0003:28DE:1102.0003: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0003: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0003: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0003: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0003: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0003: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0003: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0003: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0003: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0003: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0009: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.002F: No HID_FEATURE_REPORT submitted - nothing to read