================================================================== BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:101 [inline] BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1667 [inline] BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:169 [inline] BUG: KASAN: use-after-free in mutex_lock+0x88/0x1a0 kernel/locking/mutex.c:288 Write of size 8 at addr ffff88812f440050 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 07/12/2025 Call Trace: __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 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] atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1667 [inline] __mutex_trylock_fast kernel/locking/mutex.c:169 [inline] mutex_lock+0x88/0x1a0 kernel/locking/mutex.c:288 steam_input_close+0x90/0x170 drivers/hid/hid-steam.c:308 input_close_device+0x294/0x340 drivers/input/input.c:698 evdev_close_device drivers/input/evdev.c:418 [inline] evdev_release+0x797/0x820 drivers/input/evdev.c:460 __fput+0x20b/0x8b0 fs/file_table.c:311 ____fput+0x15/0x20 fs/file_table.c:339 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fad04e67407 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:00007ffcc87c27e0 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007fad04d79880 RCX: 00007fad04e67407 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008 RBP: 00007fad04d796e8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002 R13: 00007ffcc87c295c R14: 00007ffcc87c2950 R15: 0000558619082f50 Allocated by task 520: 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] __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:209 [inline] steam_probe+0x129/0xb10 drivers/hid/hid-steam.c:741 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 520: 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+0x149/0x1b0 drivers/base/devres.c:530 __device_release_driver drivers/base/dd.c:1231 [inline] device_release_driver_internal+0x4d0/0x760 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 ffff88812f440000 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 80 bytes inside of 512-byte region [ffff88812f440000, ffff88812f440200) The buggy address belongs to the page: page:ffffea0004bd1000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12f440 head:ffffea0004bd1000 order:2 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 ffffea000477be00 0000000600000006 ffff888100042f00 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 0x1d2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 6, ts 29728828311, free_ts 29410376644 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] __kmalloc_track_caller+0x169/0x2c0 mm/slub.c:4954 kmalloc_reserve net/core/skbuff.c:357 [inline] __alloc_skb+0x21a/0x740 net/core/skbuff.c:428 alloc_skb include/linux/skbuff.h:1183 [inline] nlmsg_new include/net/netlink.h:953 [inline] inet6_ifa_notify net/ipv6/addrconf.c:5540 [inline] __ipv6_ifa_notify+0x1e8/0xdb0 net/ipv6/addrconf.c:6195 ipv6_ifa_notify net/ipv6/addrconf.c:6247 [inline] addrconf_dad_completed+0x179/0xe70 net/ipv6/addrconf.c:4260 addrconf_dad_work+0xc72/0x1540 net/ipv6/addrconf.c:-1 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 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_pages+0x82/0x90 mm/page_alloc.c:5895 __stack_depot_save+0x454/0x480 lib/stackdepot.c:358 kasan_save_stack mm/kasan/common.c:39 [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+0xec/0x110 mm/kasan/common.c:521 kasan_kmalloc include/linux/kasan.h:227 [inline] __kmalloc_track_caller+0x13c/0x2c0 mm/slub.c:4959 kmalloc_reserve net/core/skbuff.c:357 [inline] __alloc_skb+0x21a/0x740 net/core/skbuff.c:428 alloc_skb include/linux/skbuff.h:1183 [inline] nlmsg_new include/net/netlink.h:953 [inline] rtmsg_ifa+0xfa/0x1d0 net/ipv4/devinet.c:1927 __inet_del_ifa+0x80b/0xd90 net/ipv4/devinet.c:442 inet_del_ifa net/ipv4/devinet.c:480 [inline] inetdev_destroy net/ipv4/devinet.c:321 [inline] inetdev_event+0x65a/0x10a0 net/ipv4/devinet.c:1612 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0x90/0x100 kernel/notifier.c:391 call_netdevice_notifiers_info net/core/dev.c:2057 [inline] call_netdevice_notifiers_extack net/core/dev.c:2069 [inline] call_netdevice_notifiers net/core/dev.c:2083 [inline] unregister_netdevice_many+0xfb8/0x1990 net/core/dev.c:11150 vti6_exit_batch_net+0x26a/0x2b0 net/ipv6/ip6_vti.c:1190 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x602/0xad0 net/core/net_namespace.c:599 process_one_work+0x6be/0xba0 kernel/workqueue.c:2325 Memory state around the buggy address: ffff88812f43ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88812f43ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff88812f440000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88812f440080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88812f440100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== hid 0003:28DE:1102.001F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.001F: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.001F: No HID_FEATURE_REPORT submitted - nothing to read