================================================================== 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+0x98/0x110 kernel/locking/mutex.c:298 Write of size 8 at addr ffff888112383840 by task udevd/1453 CPU: 1 PID: 1453 Comm: udevd Not tainted 5.10.234-syzkaller-00023-g3f5f2283d684 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118 print_address_description+0x81/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:435 [inline] kasan_report+0x179/0x1c0 mm/kasan/report.c:452 kasan_check_range+0x293/0x2a0 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+0x98/0x110 kernel/locking/mutex.c:298 steam_input_open+0x91/0x1a0 drivers/hid/hid-steam.c:297 input_open_device+0x151/0x2a0 drivers/input/input.c:635 evdev_open_device drivers/input/evdev.c:400 [inline] evdev_open+0x3a5/0x5c0 drivers/input/evdev.c:487 chrdev_open+0x4f7/0x620 fs/char_dev.c:414 do_dentry_open+0x7c1/0x10d0 fs/open.c:819 vfs_open+0x73/0x80 fs/open.c:942 do_open fs/namei.c:3391 [inline] path_openat+0x2660/0x3000 fs/namei.c:3509 do_filp_open+0x21c/0x460 fs/namei.c:3536 do_sys_openat2+0x13f/0x710 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+0x243/0x290 fs/open.c:1244 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f2219d3c9a4 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:00007ffcfcc43650 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2219d3c9a4 RDX: 0000000000080000 RSI: 000055d769cba3d0 RDI: 00000000ffffff9c RBP: 000055d769cba3d0 R08: 000055d769dc2078 R09: fffffffffffffe98 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 00007ffcfcc43818 R14: 0000000000000000 R15: 000055d7448e1ed5 Allocated by task 2914: 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:430 [inline] ____kasan_kmalloc+0xdb/0x110 mm/kasan/common.c:509 __kasan_kmalloc+0x9/0x10 mm/kasan/common.c:518 kasan_kmalloc include/linux/kasan.h:254 [inline] __kmalloc+0x1aa/0x330 mm/slub.c:4033 kmalloc include/linux/slab.h:557 [inline] kzalloc include/linux/slab.h:664 [inline] neigh_alloc net/core/neighbour.c:439 [inline] ___neigh_create+0x6e1/0x1a10 net/core/neighbour.c:592 __neigh_create+0x32/0x40 net/core/neighbour.c:680 ip6_finish_output2+0x832/0x15d0 net/ipv6/ip6_output.c:127 __ip6_finish_output+0x5ec/0x780 net/ipv6/ip6_output.c:201 ip6_finish_output+0x34/0x1e0 net/ipv6/ip6_output.c:211 NF_HOOK_COND include/linux/netfilter.h:288 [inline] ip6_output+0x1f7/0x4c0 net/ipv6/ip6_output.c:234 dst_output include/net/dst.h:437 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] mld_sendpack+0x5fc/0xb40 net/ipv6/mcast.c:1676 mld_send_cr net/ipv6/mcast.c:1972 [inline] mld_ifc_timer_expire+0x816/0xbf0 net/ipv6/mcast.c:2471 call_timer_fn+0x3b/0x2d0 kernel/time/timer.c:1450 expire_timers kernel/time/timer.c:1495 [inline] __run_timers+0x72a/0xa10 kernel/time/timer.c:1789 run_timer_softirq+0x69/0xf0 kernel/time/timer.c:1802 __do_softirq+0x268/0x5bb kernel/softirq.c:309 Freed by task 2185: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:45 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370 ____kasan_slab_free+0x121/0x160 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+0xc0/0x190 mm/slub.c:1621 slab_free mm/slub.c:3203 [inline] kfree+0xc3/0x270 mm/slub.c:4191 release_nodes+0x873/0x8f0 drivers/base/devres.c:524 devres_release_all+0x7b/0xa0 drivers/base/devres.c:545 __device_release_driver drivers/base/dd.c:1190 [inline] device_release_driver_internal+0x515/0x7c0 drivers/base/dd.c:1221 device_release_driver+0x19/0x20 drivers/base/dd.c:1244 bus_remove_device+0x2f8/0x360 drivers/base/bus.c:535 device_del+0x68b/0xf00 drivers/base/core.c:3452 hid_remove_device drivers/hid/hid-core.c:2501 [inline] hid_destroy_device+0x68/0x110 drivers/hid/hid-core.c:2520 usbhid_disconnect+0x9e/0xc0 drivers/hid/usbhid/hid-core.c:1445 usb_unbind_interface+0x1fa/0x8c0 drivers/usb/core/driver.c:459 device_release_driver_internal+0x506/0x7c0 drivers/base/dd.c:1221 device_release_driver+0x19/0x20 drivers/base/dd.c:1244 bus_remove_device+0x2f8/0x360 drivers/base/bus.c:535 device_del+0x68b/0xf00 drivers/base/core.c:3452 usb_disable_device+0x380/0x720 drivers/usb/core/message.c:1411 usb_disconnect+0x32a/0x890 drivers/usb/core/hub.c:2271 hub_port_connect drivers/usb/core/hub.c:5298 [inline] hub_port_connect_change drivers/usb/core/hub.c:5599 [inline] port_event drivers/usb/core/hub.c:5749 [inline] hub_event+0x1e73/0x47c0 drivers/usb/core/hub.c:5831 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2301 process_scheduled_works kernel/workqueue.c:2363 [inline] worker_thread+0xe18/0x1510 kernel/workqueue.c:2449 kthread+0x34b/0x3d0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd3/0x100 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 kvfree_call_rcu+0x136/0x650 kernel/rcu/tree.c:3535 neigh_destroy+0x3f9/0x510 net/core/neighbour.c:865 neigh_release include/net/neighbour.h:427 [inline] neigh_cleanup_and_release+0x73/0x1b0 net/core/neighbour.c:104 neigh_flush_dev+0x65e/0x840 net/core/neighbour.c:375 __neigh_ifdown+0x41/0x3a0 net/core/neighbour.c:392 neigh_ifdown+0x1f/0x30 net/core/neighbour.c:409 rt6_disable_ip+0x66b/0x6f0 net/ipv6/route.c:4794 addrconf_ifdown+0x160/0x1a60 net/ipv6/addrconf.c:3784 addrconf_notify+0x378/0xe90 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0x8c/0xf0 kernel/notifier.c:410 __dev_notify_flags+0x304/0x610 dev_change_flags+0xf0/0x1a0 net/core/dev.c:8609 do_setlink+0xc5c/0x3c30 net/core/rtnetlink.c:2729 rtnl_group_changelink net/core/rtnetlink.c:3248 [inline] __rtnl_newlink net/core/rtnetlink.c:3417 [inline] rtnl_newlink+0x109a/0x2000 net/core/rtnetlink.c:3527 rtnetlink_rcv_msg+0x955/0xc50 net/core/rtnetlink.c:5607 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2485 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5625 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x8df/0xac0 net/netlink/af_netlink.c:1333 netlink_sendmsg+0xa46/0xd00 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:652 [inline] __sock_sendmsg net/socket.c:664 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2376 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2430 __sys_sendmsg net/socket.c:2459 [inline] __do_sys_sendmsg net/socket.c:2468 [inline] __se_sys_sendmsg+0x1b1/0x280 net/socket.c:2466 __x64_sys_sendmsg+0x7b/0x90 net/socket.c:2466 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xcb Second to last potentially related work creation: kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd3/0x100 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 __call_rcu kernel/rcu/tree.c:2976 [inline] call_rcu+0x135/0x11f0 kernel/rcu/tree.c:3050 pwq_unbound_release_workfn+0x29f/0x2e0 process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2301 worker_thread+0xaea/0x1510 kernel/workqueue.c:2447 kthread+0x34b/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 ffff888112383800 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 64 bytes inside of 512-byte region [ffff888112383800, ffff888112383a00) The buggy address belongs to the page: page:ffffea000448e000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x112380 head:ffffea000448e000 order:2 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head) raw: 4000000000010200 ffffea00043a3e00 0000000300000002 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 0x1d60c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 16348, ts 1582670786574, free_ts 1581809015278 set_page_owner include/linux/page_owner.h:35 [inline] post_alloc_hook mm/page_alloc.c:2456 [inline] prep_new_page+0x166/0x180 mm/page_alloc.c:2462 get_page_from_freelist+0x2d8c/0x2f30 mm/page_alloc.c:4254 __alloc_pages_nodemask+0x435/0xaf0 mm/page_alloc.c:5348 allocate_slab mm/slub.c:1808 [inline] new_slab+0x80/0x400 mm/slub.c:1869 new_slab_objects mm/slub.c:2627 [inline] ___slab_alloc+0x302/0x4b0 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+0x204/0x330 mm/slub.c:4029 __kmalloc_node include/linux/slab.h:418 [inline] kmalloc_node include/linux/slab.h:575 [inline] kvmalloc_node+0x82/0x130 mm/util.c:612 kvmalloc include/linux/mm.h:822 [inline] kvzalloc include/linux/mm.h:830 [inline] netif_alloc_netdev_queues net/core/dev.c:9910 [inline] alloc_netdev_mqs+0x63d/0xcd0 net/core/dev.c:10576 rtnl_create_link+0x240/0x950 net/core/rtnetlink.c:3192 __rtnl_newlink net/core/rtnetlink.c:3469 [inline] rtnl_newlink+0x1399/0x2000 net/core/rtnetlink.c:3527 rtnetlink_rcv_msg+0x955/0xc50 net/core/rtnetlink.c:5607 netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2485 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5625 netlink_unicast_kernel net/netlink/af_netlink.c:1307 [inline] netlink_unicast+0x8df/0xac0 net/netlink/af_netlink.c:1333 netlink_sendmsg+0xa46/0xd00 net/netlink/af_netlink.c:1901 page last free stack trace: reset_page_owner include/linux/page_owner.h:28 [inline] free_pages_prepare mm/page_alloc.c:1349 [inline] free_pcp_prepare mm/page_alloc.c:1421 [inline] free_unref_page_prepare+0x2ae/0x2d0 mm/page_alloc.c:3336 free_unref_page mm/page_alloc.c:3391 [inline] free_the_page+0x9e/0x370 mm/page_alloc.c:5407 __free_pages+0x67/0xc0 mm/page_alloc.c:5418 free_pages+0x7c/0x90 mm/page_alloc.c:5429 kasan_depopulate_vmalloc_pte+0x6a/0x90 mm/kasan/shadow.c:354 apply_to_pte_range mm/memory.c:2504 [inline] apply_to_pmd_range mm/memory.c:2540 [inline] apply_to_pud_range mm/memory.c:2568 [inline] apply_to_p4d_range mm/memory.c:2596 [inline] __apply_to_page_range+0x720/0x9e0 mm/memory.c:2623 apply_to_existing_page_range+0x38/0x50 mm/memory.c:2874 kasan_release_vmalloc+0x9a/0xb0 mm/kasan/shadow.c:464 __purge_vmap_area_lazy+0x150e/0x1620 mm/vmalloc.c:1376 _vm_unmap_aliases+0x334/0x3b0 mm/vmalloc.c:1773 vm_unmap_aliases+0x19/0x20 mm/vmalloc.c:1796 change_page_attr_set_clr+0x308/0x1050 arch/x86/mm/pat/set_memory.c:1732 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1789 [inline] set_memory_ro+0xa1/0xe0 arch/x86/mm/pat/set_memory.c:1935 bpf_jit_binary_lock_ro include/linux/filter.h:842 [inline] bpf_int_jit_compile+0x9829/0x9dc0 arch/x86/net/bpf_jit_comp.c:2130 bpf_prog_select_runtime+0x735/0x9c0 kernel/bpf/core.c:1876 bpf_prog_load kernel/bpf/syscall.c:2243 [inline] __do_sys_bpf kernel/bpf/syscall.c:4440 [inline] __se_sys_bpf+0x1080e/0x11cb0 kernel/bpf/syscall.c:4396 Memory state around the buggy address: ffff888112383700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888112383780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888112383800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888112383880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888112383900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== hid 0003:28DE:1102.0004: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0004: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0004: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0004: No HID_FEATURE_REPORT submitted - nothing to read hid 0003:28DE:1102.0004: No HID_FEATURE_REPORT submitted - nothing to read