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xpad 8-1:179.65: xpad_irq_in - usb_submit_urb failed with result -19
xpad 8-1:179.65: xpad_irq_out - usb_submit_urb failed with result -19
==================================================================
BUG: KASAN: use-after-free in register_lock_class+0x7dd/0x870 kernel/locking/lockdep.c:1331
Read of size 1 at addr ffff88807aeda091 by task syz-executor/4579

CPU: 0 PID: 4579 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <IRQ>
 dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:316 [inline]
 print_report+0xa8/0x210 mm/kasan/report.c:420
 kasan_report+0x10b/0x140 mm/kasan/report.c:524
 register_lock_class+0x7dd/0x870 kernel/locking/lockdep.c:1331
 __lock_acquire+0x16f/0x7d10 kernel/locking/lockdep.c:4928
 lock_acquire+0x1bb/0x4a0 kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xb0/0x100 kernel/locking/spinlock.c:162
 __wake_up_common_lock kernel/sched/wait.c:137 [inline]
 __wake_up+0x107/0x1a0 kernel/sched/wait.c:160
 __usb_hcd_giveback_urb+0x396/0x520 drivers/usb/core/hcd.c:1678
 dummy_timer+0xbf6/0x3090 drivers/usb/gadget/udc/dummy_hcd.c:1994
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x560/0xd70 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x80/0x290 mm/kasan/generic.c:189
Code: ff 4d 89 c1 49 c1 e9 03 4b 8d 1c 21 49 89 df 4d 29 df 49 83 ff 10 7f 29 4d 85 ff 0f 84 38 01 00 00 4c 89 cb 48 f7 d3 4c 01 f3 <41> 80 3b 00 0f 85 86 01 00 00 49 ff c3 48 ff c3 75 ee e9 18 01 00
RSP: 0018:ffffc900032e7510 EFLAGS: 00000286
RAX: ffffea00018db101 RBX: ffffffffffffffff RCX: ffffffff81bf13ff
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffea00018db1b0
RBP: ffffc900032e7850 R08: ffffea00018db1b3 R09: 1ffffd400031b636
R10: dffffc0000000000 R11: fffff9400031b636 R12: dffffc0000000001
R13: ffffea00018db180 R14: 1ffffd400031b636 R15: 0000000000000001
 instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
 atomic_inc include/linux/atomic/atomic-instrumented.h:190 [inline]
 __page_dup_rmap include/linux/rmap.h:209 [inline]
 page_dup_file_rmap include/linux/rmap.h:214 [inline]
 copy_present_pte mm/memory.c:975 [inline]
 copy_pte_range mm/memory.c:1091 [inline]
 copy_pmd_range mm/memory.c:1177 [inline]
 copy_pud_range mm/memory.c:1214 [inline]
 copy_p4d_range mm/memory.c:1238 [inline]
 copy_page_range+0x13af/0x3900 mm/memory.c:1332
 dup_mmap kernel/fork.c:702 [inline]
 dup_mm kernel/fork.c:1546 [inline]
 copy_mm+0xec3/0x1690 kernel/fork.c:1595
 copy_process+0x1979/0x4030 kernel/fork.c:2356
 kernel_clone+0x24b/0x900 kernel/fork.c:2762
 __do_sys_clone kernel/fork.c:2903 [inline]
 __se_sys_clone kernel/fork.c:2887 [inline]
 __x64_sys_clone+0x1a7/0x220 kernel/fork.c:2887
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f2d561c3952
Code: 89 e7 e8 f1 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffc7ae61d60 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffc7ae61d60 RCX: 00007f2d561c3952
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffc7ae61eec R08: 0000000000000000 R09: 0000000000000001
R10: 000055555fa157d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 0000000000030ac5 R15: 00007ffc7ae61f40
 </TASK>

Allocated by task 5297:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 ____kasan_kmalloc mm/kasan/common.c:375 [inline]
 __kasan_kmalloc+0x8e/0xa0 mm/kasan/common.c:384
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 xpad_probe+0x41d/0x1d30 drivers/input/joystick/xpad.c:1969
 usb_probe_interface+0x5c5/0xb20 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x2aa/0xc70 drivers/base/dd.c:639
 __driver_probe_device+0x18c/0x330 drivers/base/dd.c:785
 driver_probe_device+0x4f/0x420 drivers/base/dd.c:815
 __device_attach_driver+0x2c6/0x510 drivers/base/dd.c:943
 bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429
 __device_attach+0x2a8/0x480 drivers/base/dd.c:1015
 bus_probe_device+0xbc/0x1e0 drivers/base/bus.c:489
 device_add+0xa00/0xfb0 drivers/base/core.c:3697
 usb_set_configuration+0x1991/0x1fd0 drivers/usb/core/message.c:2165
 usb_generic_driver_probe+0x89/0x150 drivers/usb/core/generic.c:238
 usb_probe_device+0x139/0x270 drivers/usb/core/driver.c:293
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x2aa/0xc70 drivers/base/dd.c:639
 __driver_probe_device+0x18c/0x330 drivers/base/dd.c:785
 driver_probe_device+0x4f/0x420 drivers/base/dd.c:815
 __device_attach_driver+0x2c6/0x510 drivers/base/dd.c:943
 bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429
 __device_attach+0x2a8/0x480 drivers/base/dd.c:1015
 bus_probe_device+0xbc/0x1e0 drivers/base/bus.c:489
 device_add+0xa00/0xfb0 drivers/base/core.c:3697
 usb_new_device+0xd66/0x1650 drivers/usb/core/hub.c:2659
 hub_port_connect drivers/usb/core/hub.c:5517 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5657 [inline]
 port_event drivers/usb/core/hub.c:5817 [inline]
 hub_event+0x2dcf/0x5560 drivers/usb/core/hub.c:5899
 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

Freed by task 5081:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x2d/0x50 mm/kasan/generic.c:516
 ____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:237
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1729 [inline]
 slab_free_freelist_hook+0x131/0x1a0 mm/slub.c:1755
 slab_free mm/slub.c:3687 [inline]
 __kmem_cache_free+0xb6/0x1f0 mm/slub.c:3700
 xpad_disconnect+0x34c/0x470 drivers/input/joystick/xpad.c:2150
 usb_unbind_interface+0x1ee/0x860 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:550 [inline]
 __device_release_driver drivers/base/dd.c:1260 [inline]
 device_release_driver_internal+0x522/0x850 drivers/base/dd.c:1286
 bus_remove_device+0x2e2/0x400 drivers/base/bus.c:531
 device_del+0x6af/0xaf0 drivers/base/core.c:3885
 usb_disable_device+0x3e2/0x890 drivers/usb/core/message.c:1414
 usb_disconnect+0x348/0x8a0 drivers/usb/core/hub.c:2314
 hub_port_connect drivers/usb/core/hub.c:5361 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5657 [inline]
 port_event drivers/usb/core/hub.c:5817 [inline]
 hub_event+0x1e50/0x5560 drivers/usb/core/hub.c:5899
 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

The buggy address belongs to the object at ffff88807aeda000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 145 bytes inside of
 1024-byte region [ffff88807aeda000, ffff88807aeda400)

The buggy address belongs to the physical page:
page:ffffea0001ebb600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88807aedb000 pfn:0x7aed8
head:ffffea0001ebb600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea0001dd6a08 ffffea0001ee3608 ffff888017441dc0
raw: ffff88807aedb000 000000000010000b 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4270, tgid 4270 (syz-executor), ts 79766083732, free_ts 79753799061
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2532
 prep_new_page mm/page_alloc.c:2539 [inline]
 get_page_from_freelist+0x1a1e/0x1ab0 mm/page_alloc.c:4328
 __alloc_pages+0x1ec/0x4f0 mm/page_alloc.c:5614
 alloc_slab_page+0x5d/0x160 mm/slub.c:1799
 allocate_slab mm/slub.c:1944 [inline]
 new_slab+0x87/0x2c0 mm/slub.c:1997
 ___slab_alloc+0xbc6/0x1240 mm/slub.c:3154
 __slab_alloc mm/slub.c:3240 [inline]
 slab_alloc_node mm/slub.c:3325 [inline]
 __kmem_cache_alloc_node+0x1a0/0x260 mm/slub.c:3398
 __do_kmalloc_node mm/slab_common.c:935 [inline]
 __kmalloc_node_track_caller+0x9e/0x230 mm/slab_common.c:956
 kmalloc_reserve net/core/skbuff.c:446 [inline]
 __alloc_skb+0x22a/0x7e0 net/core/skbuff.c:515
 alloc_skb include/linux/skbuff.h:1271 [inline]
 nlmsg_new include/net/netlink.h:991 [inline]
 inet6_rt_notify+0xb0/0x240 net/ipv6/route.c:6239
 fib6_add_rt2node net/ipv6/ip6_fib.c:1261 [inline]
 fib6_add+0x1db0/0x3d10 net/ipv6/ip6_fib.c:1490
 __ip6_ins_rt net/ipv6/route.c:1345 [inline]
 ip6_route_add+0x86/0x130 net/ipv6/route.c:3894
 addrconf_prefix_route net/ipv6/addrconf.c:2442 [inline]
 fixup_permanent_addr net/ipv6/addrconf.c:3543 [inline]
 addrconf_permanent_addr+0x692/0xa00 net/ipv6/addrconf.c:3567
 addrconf_notify+0x986/0xf40 net/ipv6/addrconf.c:3639
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xcb/0x160 kernel/notifier.c:455
 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
 call_netdevice_notifiers net/core/dev.c:2053 [inline]
 __dev_notify_flags+0x194/0x300 net/core/dev.c:8676
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1459 [inline]
 free_pcp_prepare mm/page_alloc.c:1509 [inline]
 free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3384
 free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3479
 free_slab mm/slub.c:2036 [inline]
 discard_slab mm/slub.c:2042 [inline]
 __unfreeze_partials+0x1a5/0x200 mm/slub.c:2591
 put_cpu_partial+0x17c/0x250 mm/slub.c:2667
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x144/0x160 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x1e/0x80 mm/kasan/common.c:306
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737
 slab_alloc_node mm/slub.c:3359 [inline]
 __kmem_cache_alloc_node+0x140/0x260 mm/slub.c:3398
 __do_kmalloc_node mm/slab_common.c:935 [inline]
 __kmalloc+0xa0/0x240 mm/slab_common.c:949
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 fib6_info_alloc+0x2e/0xe0 net/ipv6/ip6_fib.c:156
 ip6_route_info_create+0x44f/0x1210 net/ipv6/route.c:3794
 ip6_route_add+0x24/0x130 net/ipv6/route.c:3890
 addrconf_add_mroute net/ipv6/addrconf.c:2506 [inline]
 addrconf_add_dev+0x298/0x3a0 net/ipv6/addrconf.c:2524
 inet6_addr_add+0x19a/0x9b0 net/ipv6/addrconf.c:2981
 inet6_rtm_newaddr+0x673/0x900 net/ipv6/addrconf.c:4973

Memory state around the buggy address:
 ffff88807aed9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88807aeda000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88807aeda080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                         ^
 ffff88807aeda100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807aeda180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
   0:	ff 4d 89             	decl   -0x77(%rbp)
   3:	c1 49 c1 e9          	rorl   $0xe9,-0x3f(%rcx)
   7:	03 4b 8d             	add    -0x73(%rbx),%ecx
   a:	1c 21                	sbb    $0x21,%al
   c:	49 89 df             	mov    %rbx,%r15
   f:	4d 29 df             	sub    %r11,%r15
  12:	49 83 ff 10          	cmp    $0x10,%r15
  16:	7f 29                	jg     0x41
  18:	4d 85 ff             	test   %r15,%r15
  1b:	0f 84 38 01 00 00    	je     0x159
  21:	4c 89 cb             	mov    %r9,%rbx
  24:	48 f7 d3             	not    %rbx
  27:	4c 01 f3             	add    %r14,%rbx
* 2a:	41 80 3b 00          	cmpb   $0x0,(%r11) <-- trapping instruction
  2e:	0f 85 86 01 00 00    	jne    0x1ba
  34:	49 ff c3             	inc    %r11
  37:	48 ff c3             	inc    %rbx
  3a:	75 ee                	jne    0x2a
  3c:	e9                   	.byte 0xe9
  3d:	18 01                	sbb    %al,(%rcx)