xpad 5-1:179.65: xpad_irq_in - usb_submit_urb failed with result -19
xpad 5-1:179.65: xpad_irq_out - usb_submit_urb failed with result -19
==================================================================
BUG: KASAN: use-after-free in register_lock_class+0x7f8/0x890 kernel/locking/lockdep.c:1294
Read of size 1 at addr ffff88801f1c8091 by task syz.3.82/4459
CPU: 0 PID: 4459 Comm: syz.3.82 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
print_address_description+0x60/0x2d0 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report+0xdf/0x130 mm/kasan/report.c:451
register_lock_class+0x7f8/0x890 kernel/locking/lockdep.c:1294
__lock_acquire+0x16f/0x7d10 kernel/locking/lockdep.c:4891
lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623
__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+0xf4/0x180 kernel/sched/wait.c:157
__usb_hcd_giveback_urb+0x396/0x520 drivers/usb/core/hcd.c:1677
dummy_timer+0x8a8/0x31e0 drivers/usb/gadget/udc/dummy_hcd.c:1988
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
expire_timers kernel/time/timer.c:1699 [inline]
__run_timers+0x53e/0x800 kernel/time/timer.c:1970
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
handle_softirqs+0x339/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:dt2814_ai_notbusy+0x3c/0xb0 drivers/comedi/drivers/dt2814.c:57
Code: 00 fc ff df e8 c5 c8 f1 f9 49 81 c6 d0 01 00 00 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 88 d4 36 fa 41 8b 16 ec <0f> b6 e8 31 ff 48 89 de e8 77 cc f1 f9 48 85 db 74 19 e8 8d c8 f1
RSP: 0018:ffffc90002fef9d0 EFLAGS: 00000246
RAX: 1ffff110298fb9ff RBX: ffffc90002fefa80 RCX: 0000000000080000
RDX: 000000000000181f RSI: 000000000001173a RDI: 000000000001173b
RBP: 00000000fffffff0 R08: ffffc90002fefa80 R09: 1ffffffff1b13b85
R10: dffffc0000000000 R11: fffffbfff1b13b86 R12: 0000000000000000
R13: ffff88814c7dc800 R14: ffff88814c7dc9d0 R15: dffffc0000000000
comedi_timeout+0x94/0x100 drivers/comedi/drivers.c:308
dt2814_ai_clear drivers/comedi/drivers/dt2814.c:71 [inline]
dt2814_attach+0x116/0x660 drivers/comedi/drivers/dt2814.c:314
comedi_device_attach+0x514/0x700 drivers/comedi/drivers.c:1007
do_devconfig_ioctl drivers/comedi/comedi_fops.c:868 [inline]
comedi_unlocked_ioctl+0x67c/0x1210 drivers/comedi/comedi_fops.c:2173
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f60097bb629
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6007a15028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6009a34fa0 RCX: 00007f60097bb629
RDX: 0000200000000140 RSI: 0000000040946400 RDI: 0000000000000003
RBP: 00007f6009851b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6009a35038 R14: 00007f6009a34fa0 R15: 00007ffc866a2f78
Allocated by task 4231:
kasan_save_stack mm/kasan/common.c:38 [inline]
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+0xb5/0xf0 mm/kasan/common.c:522
kmalloc include/linux/slab.h:607 [inline]
kzalloc include/linux/slab.h:738 [inline]
xpad_probe+0x3f6/0x1b20 drivers/input/joystick/xpad.c:1790
usb_probe_interface+0x5c5/0xb20 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x284/0xc80 drivers/base/dd.c:595
__driver_probe_device+0x18c/0x330 drivers/base/dd.c:755
driver_probe_device+0x4f/0x420 drivers/base/dd.c:785
__device_attach_driver+0x2b0/0x500 drivers/base/dd.c:907
bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429
__device_attach+0x2a8/0x480 drivers/base/dd.c:979
bus_probe_device+0xbc/0x1e0 drivers/base/bus.c:489
device_add+0xa00/0xfb0 drivers/base/core.c:3412
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+0x284/0xc80 drivers/base/dd.c:595
__driver_probe_device+0x18c/0x330 drivers/base/dd.c:755
driver_probe_device+0x4f/0x420 drivers/base/dd.c:785
__device_attach_driver+0x2b0/0x500 drivers/base/dd.c:907
bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429
__device_attach+0x2a8/0x480 drivers/base/dd.c:979
bus_probe_device+0xbc/0x1e0 drivers/base/bus.c:489
device_add+0xa00/0xfb0 drivers/base/core.c:3412
usb_new_device+0xd65/0x1660 drivers/usb/core/hub.c:2632
hub_port_connect drivers/usb/core/hub.c:5497 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5637 [inline]
port_event drivers/usb/core/hub.c:5799 [inline]
hub_event+0x2e4a/0x55e0 drivers/usb/core/hub.c:5881
process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Freed by task 4173:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:230 [inline]
slab_free_hook mm/slub.c:1710 [inline]
slab_free_freelist_hook+0xea/0x170 mm/slub.c:1736
slab_free mm/slub.c:3504 [inline]
kfree+0xef/0x2a0 mm/slub.c:4564
xpad_disconnect+0x34c/0x470 drivers/input/joystick/xpad.c:1938
usb_unbind_interface+0x1ee/0x860 drivers/usb/core/driver.c:458
__device_release_driver drivers/base/dd.c:1229 [inline]
device_release_driver_internal+0x4b4/0x750 drivers/base/dd.c:1262
bus_remove_device+0x2e2/0x400 drivers/base/bus.c:531
device_del+0x6af/0xaf0 drivers/base/core.c:3600
usb_disable_device+0x3e2/0x890 drivers/usb/core/message.c:1414
usb_disconnect+0x348/0x8a0 drivers/usb/core/hub.c:2287
hub_port_connect drivers/usb/core/hub.c:5341 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5637 [inline]
port_event drivers/usb/core/hub.c:5799 [inline]
hub_event+0x1ecb/0x55e0 drivers/usb/core/hub.c:5881
process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
The buggy address belongs to the object at ffff88801f1c8000
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 145 bytes inside of
1024-byte region [ffff88801f1c8000, ffff88801f1c8400)
The buggy address belongs to the page:
page:ffffea00007c7200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1f1c8
head:ffffea00007c7200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 0000000a00000001 ffff888016c41dc0
raw: 0000000000000000 0000000000100010 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 4190, ts 69583105659, free_ts 69428915566
prep_new_page mm/page_alloc.c:2426 [inline]
get_page_from_freelist+0x1bbd/0x1ca0 mm/page_alloc.c:4192
__alloc_pages+0x1ee/0x480 mm/page_alloc.c:5487
alloc_slab_page mm/slub.c:1780 [inline]
allocate_slab mm/slub.c:1917 [inline]
new_slab+0xc0/0x4b0 mm/slub.c:1980
___slab_alloc+0x80a/0xdd0 mm/slub.c:3013
__slab_alloc mm/slub.c:3100 [inline]
slab_alloc_node mm/slub.c:3191 [inline]
__kmalloc_node_track_caller+0x1fc/0x3a0 mm/slub.c:4963
kmalloc_reserve net/core/skbuff.c:356 [inline]
__alloc_skb+0x22c/0x750 net/core/skbuff.c:427
alloc_skb include/linux/skbuff.h:1162 [inline]
nlmsg_new include/net/netlink.h:953 [inline]
inet6_rt_notify+0xdd/0x290 net/ipv6/route.c:6181
fib6_add_rt2node net/ipv6/ip6_fib.c:1255 [inline]
fib6_add+0x1d4d/0x3d40 net/ipv6/ip6_fib.c:1484
__ip6_ins_rt net/ipv6/route.c:1305 [inline]
ip6_route_add+0x86/0x130 net/ipv6/route.c:3869
addrconf_add_mroute net/ipv6/addrconf.c:2510 [inline]
addrconf_add_dev+0x295/0x3c0 net/ipv6/addrconf.c:2528
addrconf_dev_config net/ipv6/addrconf.c:3405 [inline]
addrconf_init_auto_addrs+0x6a0/0xb00 net/ipv6/addrconf.c:3493
addrconf_notify+0xa6b/0xf00 net/ipv6/addrconf.c:3662
notifier_call_chain kernel/notifier.c:83 [inline]
raw_notifier_call_chain+0xcb/0x160 kernel/notifier.c:391
call_netdevice_notifiers_extack net/core/dev.c:2074 [inline]
call_netdevice_notifiers net/core/dev.c:2088 [inline]
__dev_notify_flags+0x194/0x300 net/core/dev.c:8904
rtnl_configure_link+0x21f/0x320 net/core/rtnetlink.c:-1
__rtnl_newlink net/core/rtnetlink.c:3534 [inline]
rtnl_newlink+0x15be/0x1a50 net/core/rtnetlink.c:3574
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1340 [inline]
free_pcp_prepare mm/page_alloc.c:1391 [inline]
free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
free_unref_page+0x8f/0x2a0 mm/page_alloc.c:3396
qlist_free_all+0x35/0x90 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x150/0x160 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x2f/0xd0 mm/kasan/common.c:444
kasan_slab_alloc include/linux/kasan.h:254 [inline]
slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
slab_alloc_node mm/slub.c:3225 [inline]
slab_alloc mm/slub.c:3233 [inline]
__kmalloc_track_caller+0x125/0x330 mm/slub.c:4930
kvasprintf+0xe3/0x1a0 lib/kasprintf.c:25
kobject_set_name_vargs+0x5d/0x110 lib/kobject.c:297
kobject_add_varg lib/kobject.c:392 [inline]
kobject_init_and_add+0xeb/0x190 lib/kobject.c:481
netdev_queue_add_kobject net/core/net-sysfs.c:1666 [inline]
netdev_queue_update_kobjects+0x19c/0x3e0 net/core/net-sysfs.c:1711
register_queue_kobjects net/core/net-sysfs.c:1772 [inline]
netdev_register_kobject+0x273/0x320 net/core/net-sysfs.c:2018
register_netdevice+0x1042/0x1710 net/core/dev.c:10410
virt_wifi_newlink+0x3e9/0x820 drivers/net/wireless/virt_wifi.c:567
__rtnl_newlink net/core/rtnetlink.c:3526 [inline]
rtnl_newlink+0x1359/0x1a50 net/core/rtnetlink.c:3574
rtnetlink_rcv_msg+0x844/0xf30 net/core/rtnetlink.c:5684
Memory state around the buggy address:
ffff88801f1c7f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff88801f1c8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88801f1c8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88801f1c8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88801f1c8180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess), 4 bytes skipped:
0: e8 c5 c8 f1 f9 call 0xf9f1c8ca
5: 49 81 c6 d0 01 00 00 add $0x1d0,%r14
c: 4c 89 f0 mov %r14,%rax
f: 48 c1 e8 03 shr $0x3,%rax
13: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
18: 74 08 je 0x22
1a: 4c 89 f7 mov %r14,%rdi
1d: e8 88 d4 36 fa call 0xfa36d4aa
22: 41 8b 16 mov (%r14),%edx
25: ec in (%dx),%al
* 26: 0f b6 e8 movzbl %al,%ebp <-- trapping instruction
29: 31 ff xor %edi,%edi
2b: 48 89 de mov %rbx,%rsi
2e: e8 77 cc f1 f9 call 0xf9f1ccaa
33: 48 85 db test %rbx,%rbx
36: 74 19 je 0x51
38: e8 .byte 0xe8
39: 8d lea (bad),%ecx
3a: c8 .byte 0xc8
3b: f1 int1