================================================================== 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 ffff88812d7cd450 by task udevd/378 CPU: 0 PID: 378 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: 0033:0x7f6b46b169a4 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:00007ffe4e720a00 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6b46b169a4 RDX: 0000000000080000 RSI: 0000561fa4313250 RDI: 00000000ffffff9c RBP: 0000561fa4313250 R08: 0000561fa4316f28 R09: 0000000000000040 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 00007ffe4e720bc8 R14: 0000000000000000 R15: 0000561fa37bfed5 Allocated by task 6566: 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 881: 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 Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496 __call_rcu_common kernel/rcu/tree.c:2806 [inline] call_rcu+0xee/0x1340 kernel/rcu/tree.c:2925 fib6_info_release include/net/ip6_fib.h:350 [inline] __ip6_del_rt+0xf3/0x140 net/ipv6/route.c:3878 ip6_del_rt+0xdd/0x130 net/ipv6/route.c:3889 __ipv6_ifa_notify+0x9dd/0x11a0 net/ipv6/addrconf.c:6235 addrconf_ifdown+0xe51/0x1ab0 net/ipv6/addrconf.c:3927 addrconf_notify+0x32f/0xe10 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0x8c/0xf0 kernel/notifier.c:455 call_netdevice_notifiers_info net/core/dev.c:1978 [inline] call_netdevice_notifiers_extack net/core/dev.c:2016 [inline] call_netdevice_notifiers net/core/dev.c:2030 [inline] dev_close_many+0x37c/0x530 net/core/dev.c:1578 unregister_netdevice_many+0x4d1/0x1740 net/core/dev.c:10864 ip6gre_exit_batch_net+0x5b5/0x600 net/ipv6/ip6_gre.c:1669 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x6c9/0xbf0 net/core/net_namespace.c:604 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 Second to last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45 __kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496 __call_rcu_common kernel/rcu/tree.c:2806 [inline] call_rcu+0xee/0x1340 kernel/rcu/tree.c:2925 fib6_info_release include/net/ip6_fib.h:350 [inline] ip6_route_add+0xe5/0x130 net/ipv6/route.c:3856 addrconf_prefix_route net/ipv6/addrconf.c:2464 [inline] add_v4_addrs+0xa3a/0xfc0 net/ipv6/addrconf.c:3217 addrconf_gre_config net/ipv6/addrconf.c:3491 [inline] addrconf_init_auto_addrs+0x3e1/0x1050 net/ipv6/addrconf.c:3509 addrconf_notify+0x976/0xe10 net/ipv6/addrconf.c:3690 notifier_call_chain kernel/notifier.c:87 [inline] raw_notifier_call_chain+0x8c/0xf0 kernel/notifier.c:455 __dev_notify_flags+0x304/0x610 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8669 do_setlink+0xdb8/0x4050 net/core/rtnetlink.c:2801 __rtnl_newlink net/core/rtnetlink.c:3576 [inline] rtnl_newlink+0x170f/0x2030 net/core/rtnetlink.c:3623 rtnetlink_rcv_msg+0x9a5/0xca0 net/core/rtnetlink.c:6121 netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2518 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6139 netlink_unicast_kernel net/netlink/af_netlink.c:1327 [inline] netlink_unicast+0x906/0xab0 net/netlink/af_netlink.c:1353 netlink_sendmsg+0xa15/0xd30 net/netlink/af_netlink.c:1875 sock_sendmsg_nosec net/socket.c:716 [inline] __sock_sendmsg net/socket.c:728 [inline] __sys_sendto+0x480/0x600 net/socket.c:2138 __do_sys_sendto net/socket.c:2150 [inline] __se_sys_sendto net/socket.c:2146 [inline] __x64_sys_sendto+0xe5/0x100 net/socket.c:2146 x64_sys_call+0x15c/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:45 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 The buggy address belongs to the object at ffff88812d7cd400 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 80 bytes inside of 512-byte region [ffff88812d7cd400, ffff88812d7cd600) The buggy address belongs to the physical page: page:ffffea0004b5f300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12d7cc head:ffffea0004b5f300 order:2 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 ffffea0004367800 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 294, tgid 294 (syz-executor), ts 22677238900, free_ts 22675706308 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+0xa3/0x1e0 mm/slab_common.c:970 kmalloc include/linux/slab.h:561 [inline] kzalloc include/linux/slab.h:692 [inline] new_dir fs/proc/proc_sysctl.c:971 [inline] get_subdir fs/proc/proc_sysctl.c:1015 [inline] __register_sysctl_table+0x9d8/0x1060 fs/proc/proc_sysctl.c:1377 register_net_sysctl+0x246/0x260 net/sysctl_net.c:169 neigh_sysctl_register+0x3ec/0x4d0 net/core/neighbour.c:3847 devinet_sysctl_register+0xaa/0x1e0 net/ipv4/devinet.c:2636 inetdev_init+0x2b4/0x4e0 net/ipv4/devinet.c:279 inetdev_event+0x205/0x1110 net/ipv4/devinet.c:1534 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1498 [inline] free_pcp_prepare mm/page_alloc.c:1572 [inline] free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3498 free_unref_page+0xb2/0x5c0 mm/page_alloc.c:3594 free_the_page mm/page_alloc.c:798 [inline] __free_pages+0x61/0xf0 mm/page_alloc.c:5803 free_pages+0x7c/0x90 mm/page_alloc.c:5814 __stack_depot_save+0x42c/0x480 lib/stackdepot.c:506 kasan_save_stack mm/kasan/common.c:46 [inline] kasan_set_track+0x60/0x70 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 kobject_uevent_env+0x509/0x720 lib/kobject_uevent.c:625 kobject_uevent+0x1f/0x30 lib/kobject_uevent.c:642 netdev_queue_add_kobject net/core/net-sysfs.c:1671 [inline] netdev_queue_update_kobjects+0x235/0x4a0 net/core/net-sysfs.c:1712 register_queue_kobjects net/core/net-sysfs.c:1773 [inline] netdev_register_kobject+0x270/0x320 net/core/net-sysfs.c:2013 register_netdevice+0xe43/0x1490 net/core/dev.c:10107 Memory state around the buggy address: ffff88812d7cd300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88812d7cd380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88812d7cd400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88812d7cd480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88812d7cd500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== hid 0003:28DE:1102.0031: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0031: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0031: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0031: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0031: No HID_FEATURE_REPORT submitted - nothing to read