powermate: config urb returned -108 ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x3c2f/0x5470 kernel/locking/lockdep.c:4897 Read of size 8 at addr ffff888077fc9858 by task syz-executor.4/3630 CPU: 1 PID: 3630 Comm: syz-executor.4 Not tainted 5.16.0-rc8-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x8d/0x320 mm/kasan/report.c:247 __kasan_report mm/kasan/report.c:433 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:450 __lock_acquire+0x3c2f/0x5470 kernel/locking/lockdep.c:4897 lock_acquire kernel/locking/lockdep.c:5637 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162 powermate_config_complete+0x79/0xb0 drivers/input/misc/powermate.c:202 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1656 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1726 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1987 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x67c/0xa30 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 fa cb 15 f8 48 89 ef e8 b2 41 16 f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 f3 0b 09 f8 65 8b 05 0c 91 bb 76 85 c0 74 0a 5b 5d c3 e8 20 f3 RSP: 0018:ffffc9000294f818 EFLAGS: 00000206 RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1b225f1 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffffff906af8e8 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817dd258 R11: 0000000000000001 R12: ffff8880529ccd00 R13: dffffc0000000000 R14: 1ffff92000529f08 R15: ffffffff89ad6600 debug_object_activate+0x1b3/0x3e0 lib/debugobjects.c:695 debug_rcu_head_queue kernel/rcu/rcu.h:176 [inline] __call_rcu kernel/rcu/tree.c:2969 [inline] call_rcu+0x2c/0x740 kernel/rcu/tree.c:3065 destroy_inode+0x129/0x1b0 fs/inode.c:290 iput_final fs/inode.c:1670 [inline] iput.part.0+0x562/0x820 fs/inode.c:1696 iput+0x58/0x70 fs/inode.c:1686 proc_invalidate_siblings_dcache+0x25b/0x610 fs/proc/inode.c:160 release_task+0xcb8/0x17e0 kernel/exit.c:223 wait_task_zombie kernel/exit.c:1114 [inline] wait_consider_task+0x2fa6/0x3b80 kernel/exit.c:1341 do_wait_thread kernel/exit.c:1404 [inline] do_wait+0x6ca/0xce0 kernel/exit.c:1521 kernel_wait4+0x14c/0x260 kernel/exit.c:1684 __do_sys_wait4+0x13f/0x150 kernel/exit.c:1712 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fe91d363337 Code: 89 7c 24 10 48 89 4c 24 18 e8 35 50 02 00 4c 8b 54 24 18 8b 54 24 14 41 89 c0 48 8b 74 24 08 8b 7c 24 10 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 89 44 24 10 e8 65 50 02 00 8b 44 RSP: 002b:00007fe91d9abd50 EFLAGS: 00000293 ORIG_RAX: 000000000000003d RAX: ffffffffffffffda RBX: 0000000000001fea RCX: 00007fe91d363337 RDX: 0000000040000001 RSI: 00007fe91d9abddc RDI: 00000000ffffffff RBP: 00007fe91d9abddc R08: 0000000000000000 R09: 00007ffe87f98080 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 00000000000d0a3a R14: 0000000000000009 R15: 00007fe91d9abe40 Allocated by task 3667: kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc mm/kasan/common.c:513 [inline] ____kasan_kmalloc mm/kasan/common.c:472 [inline] __kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:522 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:724 [inline] powermate_probe+0x24a/0x12a0 drivers/input/misc/powermate.c:323 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x245/0xcc0 drivers/base/dd.c:596 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:898 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x228/0x4a0 drivers/base/dd.c:969 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xc17/0x1ee0 drivers/base/core.c:3394 usb_set_configuration+0x101e/0x1900 drivers/usb/core/message.c:2170 usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238 usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x245/0xcc0 drivers/base/dd.c:596 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:898 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x228/0x4a0 drivers/base/dd.c:969 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xc17/0x1ee0 drivers/base/core.c:3394 usb_new_device.cold+0x63f/0x108e drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5353 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5643 [inline] hub_event+0x23e5/0x4460 drivers/usb/core/hub.c:5725 process_one_work+0x9b2/0x1660 kernel/workqueue.c:2298 worker_thread+0x65d/0x1130 kernel/workqueue.c:2445 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Freed by task 18786: kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 kasan_set_track+0x21/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370 ____kasan_slab_free mm/kasan/common.c:366 [inline] ____kasan_slab_free mm/kasan/common.c:328 [inline] __kasan_slab_free+0xff/0x130 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:235 [inline] slab_free_hook mm/slub.c:1723 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1749 slab_free mm/slub.c:3513 [inline] kfree+0xf6/0x560 mm/slub.c:4561 powermate_disconnect+0x1ce/0x250 drivers/input/misc/powermate.c:432 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 __device_release_driver+0x5d7/0x700 drivers/base/dd.c:1205 device_release_driver_internal drivers/base/dd.c:1236 [inline] device_release_driver+0x26/0x40 drivers/base/dd.c:1259 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x502/0xd60 drivers/base/core.c:3581 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x27a/0x78e drivers/usb/core/hub.c:2225 hub_quiesce+0x170/0x310 drivers/usb/core/hub.c:1327 hub_disconnect+0xcb/0x510 drivers/usb/core/hub.c:1722 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 __device_release_driver+0x5d7/0x700 drivers/base/dd.c:1205 device_release_driver_internal drivers/base/dd.c:1236 [inline] device_release_driver+0x26/0x40 drivers/base/dd.c:1259 usb_driver_release_interface+0x102/0x180 drivers/usb/core/driver.c:627 proc_ioctl.part.0+0x4d6/0x560 drivers/usb/core/devio.c:2332 proc_ioctl drivers/usb/core/devio.c:170 [inline] proc_ioctl_default drivers/usb/core/devio.c:2375 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2731 [inline] usbdev_ioctl+0x2b29/0x36c0 drivers/usb/core/devio.c:2791 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Last potentially related work creation: kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 __kasan_record_aux_stack+0xf5/0x120 mm/kasan/generic.c:348 kvfree_call_rcu+0x74/0x990 kernel/rcu/tree.c:3550 drop_sysctl_table+0x3c0/0x4e0 fs/proc/proc_sysctl.c:1647 unregister_sysctl_table fs/proc/proc_sysctl.c:1685 [inline] unregister_sysctl_table+0xc0/0x190 fs/proc/proc_sysctl.c:1660 neigh_sysctl_unregister+0x5b/0x80 net/core/neighbour.c:3810 devinet_sysctl_unregister net/ipv4/devinet.c:2633 [inline] inetdev_destroy net/ipv4/devinet.c:326 [inline] inetdev_event+0xd01/0x15d0 net/ipv4/devinet.c:1600 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2002 call_netdevice_notifiers_extack net/core/dev.c:2014 [inline] call_netdevice_notifiers net/core/dev.c:2028 [inline] unregister_netdevice_many+0x94f/0x1790 net/core/dev.c:11080 __rtnl_newlink+0x1431/0x1750 net/core/rtnetlink.c:3489 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3506 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2496 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Second to last potentially related work creation: kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38 __kasan_record_aux_stack+0xf5/0x120 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:2985 [inline] call_rcu+0xb1/0x740 kernel/rcu/tree.c:3065 free_fib_info net/ipv4/fib_semantics.c:254 [inline] fib_create_info+0x219f/0x48c0 net/ipv4/fib_semantics.c:1547 fib_table_insert+0x1cd/0x1af0 net/ipv4/fib_trie.c:1224 fib_magic+0x455/0x540 net/ipv4/fib_frontend.c:1087 fib_add_ifaddr+0x16c/0x500 net/ipv4/fib_frontend.c:1109 fib_netdev_event+0x46f/0x680 net/ipv4/fib_frontend.c:1466 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2002 call_netdevice_notifiers_extack net/core/dev.c:2014 [inline] call_netdevice_notifiers net/core/dev.c:2028 [inline] __dev_notify_flags+0x110/0x2b0 net/core/dev.c:8834 dev_change_flags+0x112/0x170 net/core/dev.c:8872 do_setlink+0x96d/0x3970 net/core/rtnetlink.c:2719 __rtnl_newlink+0xde6/0x1750 net/core/rtnetlink.c:3391 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3506 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2496 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 __sys_sendto+0x21c/0x320 net/socket.c:2036 __do_sys_sendto net/socket.c:2048 [inline] __se_sys_sendto net/socket.c:2044 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2044 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae The buggy address belongs to the object at ffff888077fc9800 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 88 bytes inside of 256-byte region [ffff888077fc9800, ffff888077fc9900) The buggy address belongs to the page: page:ffffea0001dff200 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888077fc8c00 pfn:0x77fc8 head:ffffea0001dff200 order:1 compound_mapcount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0001b56208 ffffea0001e82708 ffff888010c41b40 raw: ffff888077fc8c00 0000000000100004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3629, ts 94536745132, free_ts 92889547776 prep_new_page mm/page_alloc.c:2418 [inline] get_page_from_freelist+0xa72/0x2f50 mm/page_alloc.c:4149 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5369 alloc_pages+0x1a7/0x300 mm/mempolicy.c:2190 alloc_slab_page mm/slub.c:1793 [inline] allocate_slab mm/slub.c:1930 [inline] new_slab+0x32d/0x4a0 mm/slub.c:1993 ___slab_alloc+0x918/0xfe0 mm/slub.c:3022 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3109 slab_alloc_node mm/slub.c:3200 [inline] slab_alloc mm/slub.c:3242 [inline] __kmalloc+0x2fb/0x340 mm/slub.c:4419 kmalloc include/linux/slab.h:595 [inline] kzalloc include/linux/slab.h:724 [inline] fib_create_info+0xd91/0x48c0 net/ipv4/fib_semantics.c:1417 fib_table_insert+0x1cd/0x1af0 net/ipv4/fib_trie.c:1224 fib_magic+0x455/0x540 net/ipv4/fib_frontend.c:1087 fib_add_ifaddr+0x395/0x500 net/ipv4/fib_frontend.c:1122 fib_netdev_event+0x46f/0x680 net/ipv4/fib_frontend.c:1466 notifier_call_chain+0xb5/0x200 kernel/notifier.c:83 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2002 call_netdevice_notifiers_extack net/core/dev.c:2014 [inline] call_netdevice_notifiers net/core/dev.c:2028 [inline] __dev_notify_flags+0x110/0x2b0 net/core/dev.c:8834 dev_change_flags+0x112/0x170 net/core/dev.c:8872 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1338 [inline] free_pcp_prepare+0x374/0x870 mm/page_alloc.c:1389 free_unref_page_prepare mm/page_alloc.c:3309 [inline] free_unref_page+0x19/0x690 mm/page_alloc.c:3388 qlink_free mm/kasan/quarantine.c:146 [inline] qlist_free_all+0x5a/0xc0 mm/kasan/quarantine.c:165 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272 __kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:259 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:3234 [inline] slab_alloc mm/slub.c:3242 [inline] kmem_cache_alloc_trace+0x1e9/0x2c0 mm/slub.c:3259 kmalloc include/linux/slab.h:590 [inline] kzalloc include/linux/slab.h:724 [inline] kset_create lib/kobject.c:969 [inline] kset_create_and_add+0x4b/0x1a0 lib/kobject.c:1012 register_queue_kobjects net/core/net-sysfs.c:1758 [inline] netdev_register_kobject+0x1c6/0x430 net/core/net-sysfs.c:2014 register_netdevice+0xd31/0x1500 net/core/dev.c:10336 veth_newlink+0x3fc/0xb00 drivers/net/veth.c:1699 __rtnl_newlink+0x106d/0x1750 net/core/rtnetlink.c:3458 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3506 rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5571 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2496 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x904/0xdf0 net/netlink/af_netlink.c:1921 Memory state around the buggy address: ffff888077fc9700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888077fc9780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888077fc9800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888077fc9880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888077fc9900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ---------------- Code disassembly (best guess): 0: 74 24 je 0x26 2: 10 e8 adc %ch,%al 4: fa cli 5: cb lret 6: 15 f8 48 89 ef adc $0xef8948f8,%eax b: e8 b2 41 16 f8 callq 0xf81641c2 10: 81 e3 00 02 00 00 and $0x200,%ebx 16: 75 25 jne 0x3d 18: 9c pushfq 19: 58 pop %rax 1a: f6 c4 02 test $0x2,%ah 1d: 75 2d jne 0x4c 1f: 48 85 db test %rbx,%rbx 22: 74 01 je 0x25 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 f3 0b 09 f8 callq 0xf8090c22 <-- trapping instruction 2f: 65 8b 05 0c 91 bb 76 mov %gs:0x76bb910c(%rip),%eax # 0x76bb9142 36: 85 c0 test %eax,%eax 38: 74 0a je 0x44 3a: 5b pop %rbx 3b: 5d pop %rbp 3c: c3 retq 3d: e8 .byte 0xe8 3e: 20 f3 and %dh,%bl