================================================================== BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:102 [inline] BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline] BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:176 [inline] BUG: KASAN: use-after-free in mutex_lock+0xa4/0x1e0 kernel/locking/mutex.c:295 Write of size 8 at addr ffff888126137050 by task udevd/503 CPU: 1 PID: 503 Comm: udevd Not tainted 6.1.124-syzkaller-1167530-g1ffc24e7e898 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0x158/0x4e0 mm/kasan/report.c:427 kasan_report+0x13c/0x170 mm/kasan/report.c:531 kasan_check_range+0x294/0x2a0 mm/kasan/generic.c:189 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:102 [inline] atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline] __mutex_trylock_fast kernel/locking/mutex.c:176 [inline] mutex_lock+0xa4/0x1e0 kernel/locking/mutex.c:295 steam_input_open+0x91/0x1a0 drivers/hid/hid-steam.c:297 input_open_device+0x1a5/0x310 drivers/input/input.c:650 evdev_open_device drivers/input/evdev.c:400 [inline] evdev_open+0x3df/0x620 drivers/input/evdev.c:487 chrdev_open+0x4f7/0x620 fs/char_dev.c:414 do_dentry_open+0x891/0x1250 fs/open.c:884 vfs_open+0x73/0x80 fs/open.c:1015 do_open fs/namei.c:3625 [inline] path_openat+0x2532/0x2d60 fs/namei.c:3782 do_filp_open+0x230/0x480 fs/namei.c:3809 do_sys_openat2+0x151/0x870 fs/open.c:1341 do_sys_open fs/open.c:1357 [inline] __do_sys_openat fs/open.c:1373 [inline] __se_sys_openat fs/open.c:1368 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1368 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f8cc8b169a4 Code: 24 20 48 8d 44 24 30 48 89 44 24 28 64 8b 04 25 18 00 00 00 85 c0 75 2c 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 60 48 8b 15 55 a4 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007ffd9cf47ed0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8cc8b169a4 RDX: 0000000000080000 RSI: 0000560fc0b899f0 RDI: 00000000ffffff9c RBP: 0000560fc0b899f0 R08: 0000560fc0b83b28 R09: fffffffffffffe98 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 00007ffd9cf48098 R14: 0000000000000000 R15: 0000560fa6b18ed5 Allocated by task 19: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:379 [inline] __kasan_kmalloc+0x9c/0xb0 mm/kasan/common.c:388 kasan_kmalloc include/linux/kasan.h:212 [inline] __do_kmalloc_node mm/slab_common.c:938 [inline] __kmalloc_node_track_caller+0xb3/0x1e0 mm/slab_common.c:958 alloc_dr drivers/base/devres.c:116 [inline] devm_kmalloc+0x55/0x180 drivers/base/devres.c:826 devm_kzalloc include/linux/device.h:211 [inline] steam_probe+0x12e/0xbe0 drivers/hid/hid-steam.c:741 hid_device_probe+0x292/0x3a0 drivers/hid/hid-core.c:2624 really_probe+0x2b8/0x920 drivers/base/dd.c:639 __driver_probe_device+0x1a0/0x310 drivers/base/dd.c:808 driver_probe_device+0x54/0x3d0 drivers/base/dd.c:838 __device_attach_driver+0x2e3/0x490 drivers/base/dd.c:966 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:429 __device_attach+0x312/0x510 drivers/base/dd.c:1038 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087 bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:489 device_add+0xb60/0xf10 drivers/base/core.c:3697 hid_add_device+0x3ad/0x510 drivers/hid/hid-core.c:2776 usbhid_probe+0xc1f/0xff0 drivers/hid/usbhid/hid-core.c:1424 usb_probe_interface+0x5b6/0xa90 drivers/usb/core/driver.c:397 really_probe+0x2b8/0x920 drivers/base/dd.c:639 __driver_probe_device+0x1a0/0x310 drivers/base/dd.c:808 driver_probe_device+0x54/0x3d0 drivers/base/dd.c:838 __device_attach_driver+0x2e3/0x490 drivers/base/dd.c:966 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:429 __device_attach+0x312/0x510 drivers/base/dd.c:1038 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087 bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:489 device_add+0xb60/0xf10 drivers/base/core.c:3697 usb_set_configuration+0x190f/0x1e80 drivers/usb/core/message.c:2165 usb_generic_driver_probe+0x8b/0x150 drivers/usb/core/generic.c:238 usb_probe_device+0x144/0x260 drivers/usb/core/driver.c:294 really_probe+0x2b8/0x920 drivers/base/dd.c:639 __driver_probe_device+0x1a0/0x310 drivers/base/dd.c:808 driver_probe_device+0x54/0x3d0 drivers/base/dd.c:838 __device_attach_driver+0x2e3/0x490 drivers/base/dd.c:966 bus_for_each_drv+0x183/0x200 drivers/base/bus.c:429 __device_attach+0x312/0x510 drivers/base/dd.c:1038 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087 bus_probe_device+0xbe/0x1e0 drivers/base/bus.c:489 device_add+0xb60/0xf10 drivers/base/core.c:3697 usb_new_device+0xf2f/0x1820 drivers/usb/core/hub.c:2645 hub_port_connect drivers/usb/core/hub.c:5554 [inline] hub_port_connect_change drivers/usb/core/hub.c:5694 [inline] port_event drivers/usb/core/hub.c:5854 [inline] hub_event+0x2db1/0x4830 drivers/usb/core/hub.c:5936 process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299 worker_thread+0xa60/0x1260 kernel/workqueue.c:2446 kthread+0x26d/0x300 kernel/kthread.c:386 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Freed by task 19: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0x131/0x180 mm/kasan/common.c:241 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:249 kasan_slab_free include/linux/kasan.h:178 [inline] slab_free_hook mm/slub.c:1745 [inline] slab_free_freelist_hook mm/slub.c:1771 [inline] slab_free mm/slub.c:3686 [inline] __kmem_cache_free+0x21d/0x410 mm/slub.c:3702 kfree+0x7a/0xf0 mm/slab_common.c:990 release_nodes+0xf1/0x230 drivers/base/devres.c:503 devres_release_all+0x148/0x1a0 drivers/base/devres.c:532 device_unbind_cleanup drivers/base/dd.c:530 [inline] __device_release_driver drivers/base/dd.c:1288 [inline] device_release_driver_internal+0x5bb/0x870 drivers/base/dd.c:1309 device_release_driver+0x19/0x20 drivers/base/dd.c:1332 bus_remove_device+0x2fa/0x360 drivers/base/bus.c:531 device_del+0x663/0xe90 drivers/base/core.c:3885 hid_remove_device drivers/hid/hid-core.c:2824 [inline] hid_destroy_device+0x68/0x110 drivers/hid/hid-core.c:2843 usbhid_disconnect+0x9e/0xc0 drivers/hid/usbhid/hid-core.c:1451 usb_unbind_interface+0x1fa/0x8c0 drivers/usb/core/driver.c:459 device_remove drivers/base/dd.c:550 [inline] __device_release_driver drivers/base/dd.c:1283 [inline] device_release_driver_internal+0x53e/0x870 drivers/base/dd.c:1309 device_release_driver+0x19/0x20 drivers/base/dd.c:1332 bus_remove_device+0x2fa/0x360 drivers/base/bus.c:531 device_del+0x663/0xe90 drivers/base/core.c:3885 usb_disable_device+0x380/0x720 drivers/usb/core/message.c:1414 usb_disconnect+0x32a/0x890 drivers/usb/core/hub.c:2300 hub_port_connect drivers/usb/core/hub.c:5393 [inline] hub_port_connect_change drivers/usb/core/hub.c:5694 [inline] port_event drivers/usb/core/hub.c:5854 [inline] hub_event+0x1ed8/0x4830 drivers/usb/core/hub.c:5936 process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299 process_scheduled_works kernel/workqueue.c:2362 [inline] worker_thread+0xd71/0x1260 kernel/workqueue.c:2448 kthread+0x26d/0x300 kernel/kthread.c:386 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 The buggy address belongs to the object at ffff888126137000 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 80 bytes inside of 512-byte region [ffff888126137000, ffff888126137200) The buggy address belongs to the physical page: page:ffffea0004984d00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x126134 head:ffffea0004984d00 order:2 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 ffffea0004895400 dead000000000002 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 474, tgid 474 (kworker/1:3), ts 57096758715, free_ts 55879504165 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x213/0x220 mm/page_alloc.c:2605 prep_new_page+0x1b/0x110 mm/page_alloc.c:2612 get_page_from_freelist+0x2f41/0x2fc0 mm/page_alloc.c:4477 __alloc_pages+0x234/0x610 mm/page_alloc.c:5775 alloc_slab_page+0x6c/0xf0 allocate_slab mm/slub.c:1962 [inline] new_slab+0x90/0x3e0 mm/slub.c:2015 ___slab_alloc+0x6f9/0xb80 mm/slub.c:3203 __slab_alloc+0x5d/0xa0 mm/slub.c:3302 slab_alloc_node mm/slub.c:3387 [inline] __kmem_cache_alloc_node+0x207/0x2a0 mm/slub.c:3462 __do_kmalloc_node mm/slab_common.c:937 [inline] __kmalloc_node_track_caller+0xa2/0x1e0 mm/slab_common.c:958 kmalloc_reserve net/core/skbuff.c:446 [inline] __alloc_skb+0x125/0x2d0 net/core/skbuff.c:515 alloc_skb include/linux/skbuff.h:1290 [inline] nlmsg_new include/net/netlink.h:991 [inline] inet6_ifa_notify net/ipv6/addrconf.c:5568 [inline] __ipv6_ifa_notify+0x2e1/0x11a0 net/ipv6/addrconf.c:6213 ipv6_ifa_notify net/ipv6/addrconf.c:6265 [inline] addrconf_dad_completed+0x177/0xdb0 net/ipv6/addrconf.c:4282 addrconf_dad_work+0xd95/0x16b0 process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299 worker_thread+0xa60/0x1260 kernel/workqueue.c:2446 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1513 [inline] free_pcp_prepare mm/page_alloc.c:1587 [inline] free_unref_page_prepare+0x9f1/0xa00 mm/page_alloc.c:3526 free_unref_page+0xb2/0x5c0 mm/page_alloc.c:3622 free_the_page mm/page_alloc.c:798 [inline] __free_pages+0x61/0xf0 mm/page_alloc.c:5864 __vunmap+0x9c6/0xb80 mm/vmalloc.c:2729 __vfree mm/vmalloc.c:2778 [inline] vfree+0x5c/0x80 mm/vmalloc.c:2809 kcov_put kernel/kcov.c:437 [inline] kcov_close+0x2b/0x50 kernel/kcov.c:533 __fput+0x1e5/0x870 fs/file_table.c:320 ____fput+0x15/0x20 fs/file_table.c:348 task_work_run+0x24d/0x2e0 kernel/task_work.c:203 exit_task_work include/linux/task_work.h:39 [inline] do_exit+0xbd0/0x2b80 kernel/exit.c:877 do_group_exit+0x21a/0x2d0 kernel/exit.c:1027 get_signal+0x169d/0x1820 kernel/signal.c:2889 arch_do_signal_or_restart+0xb0/0x16f0 arch/x86/kernel/signal.c:871 exit_to_user_mode_loop+0x74/0xa0 kernel/entry/common.c:174 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303 Memory state around the buggy address: ffff888126136f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888126136f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888126137000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888126137080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888126137100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== hid 0003:28DE:1102.00A1: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.00A1: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.00A1: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.00A1: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.00A1: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.00D1: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.00D1: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.00D1: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.00D1: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.00D1: No HID_FEATURE_REPORT submitted - nothing to read