================================================================== 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 ffff88811acf9450 by task udevd/313 CPU: 0 PID: 313 Comm: udevd Not tainted 6.1.99-syzkaller-00076-g5c7d0d4f4a38 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 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:3627 [inline] path_openat+0x2532/0x2d60 fs/namei.c:3784 do_filp_open+0x230/0x480 fs/namei.c:3811 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: 0033:0x7fb5c2b169a4 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:00007ffc51ad29a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb5c2b169a4 RDX: 0000000000080000 RSI: 000055da7e0be4e0 RDI: 00000000ffffff9c RBP: 000055da7e0be4e0 R08: 000055da7e0bc4d8 R09: fffffffffffffe98 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 00007ffc51ad2b68 R14: 0000000000000000 R15: 000055da7c255ed5 Allocated by task 306: 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:957 [inline] __kmalloc_node_track_caller+0xb3/0x1e0 mm/slab_common.c:977 alloc_dr drivers/base/devres.c:116 [inline] devm_kmalloc+0x55/0x180 drivers/base/devres.c:825 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:427 __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:487 device_add+0xb60/0xf10 drivers/base/core.c:3689 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:427 __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:487 device_add+0xb60/0xf10 drivers/base/core.c:3689 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:427 __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:487 device_add+0xb60/0xf10 drivers/base/core.c:3689 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:308 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:3684 [inline] __kmem_cache_free+0x218/0x3b0 mm/slub.c:3697 kfree+0x7a/0xf0 mm/slab_common.c:1009 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:529 device_del+0x663/0xe90 drivers/base/core.c:3877 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:529 device_del+0x663/0xe90 drivers/base/core.c:3877 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 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:308 The buggy address belongs to the object at ffff88811acf9400 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 80 bytes inside of 512-byte region [ffff88811acf9400, ffff88811acf9600) The buggy address belongs to the physical page: page:ffffea00046b3e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11acf8 head:ffffea00046b3e00 order:2 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 ffffea00044dd800 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 138, tgid 138 (dhcpcd), ts 5614974036, free_ts 0 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x213/0x220 mm/page_alloc.c:2590 prep_new_page+0x1b/0x110 mm/page_alloc.c:2597 get_page_from_freelist+0x27ea/0x2870 mm/page_alloc.c:4425 __alloc_pages+0x3a1/0x780 mm/page_alloc.c:5714 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+0x1af/0x250 mm/slub.c:3460 __do_kmalloc_node mm/slab_common.c:956 [inline] __kmalloc_node_track_caller+0xa2/0x1e0 mm/slab_common.c:977 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] alloc_skb_with_frags+0xa6/0x680 net/core/skbuff.c:6168 sock_alloc_send_pskb+0x915/0xa50 net/core/sock.c:2753 unix_dgram_sendmsg+0x5b1/0x2050 net/unix/af_unix.c:1943 sock_sendmsg_nosec net/socket.c:716 [inline] __sock_sendmsg net/socket.c:728 [inline] sock_write_iter+0x394/0x4e0 net/socket.c:1133 call_write_iter include/linux/fs.h:2274 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0xaf6/0xed0 fs/read_write.c:584 page_owner free stack trace missing Memory state around the buggy address: ffff88811acf9300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88811acf9380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88811acf9400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88811acf9480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88811acf9500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== hid 0003:28DE:1102.0080: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0080: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0080: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0080: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0080: No HID_FEATURE_REPORT submitted - nothing to read