xpad 4-1:179.65: xpad_irq_in - usb_submit_urb failed with result -19
xpad 4-1:179.65: xpad_irq_out - usb_submit_urb failed with result -19
==================================================================
BUG: KASAN: slab-use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
BUG: KASAN: slab-use-after-free in do_raw_spin_lock+0x28b/0x2f0 kernel/locking/spinlock_debug.c:115
Read of size 4 at addr ffff8880464c385c by task kworker/u8:11/4542
CPU: 1 UID: 0 PID: 4542 Comm: kworker/u8:11 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: events_unbound nsim_dev_trap_report_work
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0xba/0x230 mm/kasan/report.c:482
kasan_report+0x117/0x150 mm/kasan/report.c:595
debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
do_raw_spin_lock+0x28b/0x2f0 kernel/locking/spinlock_debug.c:115
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock_irqsave+0x4c/0x60 kernel/locking/spinlock.c:162
__wake_up_common_lock+0x2f/0x1f0 kernel/sched/wait.c:124
__usb_hcd_giveback_urb+0x3b0/0x540 drivers/usb/core/hcd.c:1660
dummy_timer+0xbbd/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1995
__run_hrtimer kernel/time/hrtimer.c:1785 [inline]
__hrtimer_run_queues+0x529/0xc30 kernel/time/hrtimer.c:1849
hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1866
handle_softirqs+0x22a/0x7c0 kernel/softirq.c:626
__do_softirq kernel/softirq.c:660 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:727
irq_exit_rcu+0x9/0x30 kernel/softirq.c:743
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:skb_set_end_offset include/linux/skbuff.h:1734 [inline]
RIP: 0010:__finalize_skb_around net/core/skbuff.c:400 [inline]
RIP: 0010:__alloc_skb+0x3c0/0x7d0 net/core/skbuff.c:719
Code: 85 bc 02 00 00 41 81 c4 c0 fe ff ff c7 83 c8 00 00 00 00 00 00 00 48 8d 93 cc 00 00 00 49 89 d5 49 c1 ed 03 43 0f b6 44 3d 00 <84> c0 0f 85 a9 02 00 00 44 89 a3 cc 00 00 00 48 8d bb ba 00 00 00
RSP: 0018:ffffc9000d2ffa00 EFLAGS: 00000a07
RAX: 0000000000000000 RBX: ffff888079c82a00 RCX: ffffffff8958c5a9
RDX: ffff888079c82acc RSI: 0000000000000004 RDI: ffff888079c82ac8
RBP: ffff888079c82ad0 R08: ffff888079c82ae7 R09: 1ffff1100f39055c
R10: dffffc0000000000 R11: ffffed100f39055d R12: 0000000000000ec0
R13: 1ffff1100f390559 R14: 1ffff1100f39055a R15: dffffc0000000000
alloc_skb include/linux/skbuff.h:1383 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:819 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:876 [inline]
nsim_dev_trap_report_work+0x29a/0xb80 drivers/net/netdevsim/dev.c:922
process_one_work+0x949/0x15a0 kernel/workqueue.c:3279
process_scheduled_works kernel/workqueue.c:3362 [inline]
worker_thread+0x9af/0xee0 kernel/workqueue.c:3443
kthread+0x388/0x470 kernel/kthread.c:467
ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 902:
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
__kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415
kasan_kmalloc include/linux/kasan.h:263 [inline]
__kmalloc_cache_noprof+0x31c/0x660 mm/slub.c:5244
kmalloc_noprof include/linux/slab.h:962 [inline]
kzalloc_noprof include/linux/slab.h:1204 [inline]
xpad_probe+0x428/0x1fc0 drivers/input/joystick/xpad.c:2080
usb_probe_interface+0x668/0xc90 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x267/0xaf0 drivers/base/dd.c:661
__driver_probe_device+0x18c/0x320 drivers/base/dd.c:803
driver_probe_device+0x4f/0x240 drivers/base/dd.c:833
__device_attach_driver+0x2d4/0x4c0 drivers/base/dd.c:961
bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500
__device_attach+0x2c5/0x450 drivers/base/dd.c:1033
device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1088
bus_probe_device+0x12a/0x220 drivers/base/bus.c:574
device_add+0x7b6/0xb70 drivers/base/core.c:3689
usb_set_configuration+0x1a87/0x2110 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250
usb_probe_device+0x1c4/0x3b0 drivers/usb/core/driver.c:291
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x267/0xaf0 drivers/base/dd.c:661
__driver_probe_device+0x18c/0x320 drivers/base/dd.c:803
driver_probe_device+0x4f/0x240 drivers/base/dd.c:833
__device_attach_driver+0x2d4/0x4c0 drivers/base/dd.c:961
bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500
__device_attach+0x2c5/0x450 drivers/base/dd.c:1033
device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1088
bus_probe_device+0x12a/0x220 drivers/base/bus.c:574
device_add+0x7b6/0xb70 drivers/base/core.c:3689
usb_new_device+0xa08/0x16f0 drivers/usb/core/hub.c:2695
hub_port_connect drivers/usb/core/hub.c:5567 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
port_event drivers/usb/core/hub.c:5871 [inline]
hub_event+0x2a1c/0x4f30 drivers/usb/core/hub.c:5953
process_one_work+0x949/0x15a0 kernel/workqueue.c:3279
process_scheduled_works kernel/workqueue.c:3362 [inline]
worker_thread+0x9af/0xee0 kernel/workqueue.c:3443
kthread+0x388/0x470 kernel/kthread.c:467
ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Freed by task 5835:
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2621 [inline]
slab_free mm/slub.c:6025 [inline]
kfree+0x1c1/0x610 mm/slub.c:6335
xpad_disconnect+0x350/0x480 drivers/input/joystick/xpad.c:2264
usb_unbind_interface+0x26e/0x910 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:573 [inline]
__device_release_driver drivers/base/dd.c:1284 [inline]
device_release_driver_internal+0x4d9/0x860 drivers/base/dd.c:1307
bus_remove_device+0x34d/0x440 drivers/base/bus.c:616
device_del+0x527/0x8f0 drivers/base/core.c:3878
usb_disable_device+0x3d4/0x8d0 drivers/usb/core/message.c:1418
usb_disconnect+0x32f/0x990 drivers/usb/core/hub.c:2345
hub_port_connect drivers/usb/core/hub.c:5407 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5707 [inline]
port_event drivers/usb/core/hub.c:5871 [inline]
hub_event+0x1cc9/0x4f30 drivers/usb/core/hub.c:5953
process_one_work+0x949/0x15a0 kernel/workqueue.c:3279
process_scheduled_works kernel/workqueue.c:3362 [inline]
worker_thread+0x9af/0xee0 kernel/workqueue.c:3443
kthread+0x388/0x470 kernel/kthread.c:467
ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff8880464c3800
which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 92 bytes inside of
freed 1024-byte region [ffff8880464c3800, ffff8880464c3c00)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880464c6800 pfn:0x464c0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88813ffa6dc0 ffffea00009a6c10 ffffea0000ce8a10
raw: ffff8880464c6800 000000000010000d 00000000f5000000 0000000000000000
head: 00fff00000000240 ffff88813ffa6dc0 ffffea00009a6c10 ffffea0000ce8a10
head: ffff8880464c6800 000000000010000d 00000000f5000000 0000000000000000
head: 00fff00000000003 ffffea0001193001 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5816, tgid 5816 (syz-executor), ts 80929547672, free_ts 77752763782
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x231/0x280 mm/page_alloc.c:1883
prep_new_page mm/page_alloc.c:1891 [inline]
get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3956
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5244
alloc_slab_page mm/slub.c:3189 [inline]
allocate_slab+0x7b/0x660 mm/slub.c:3362
new_slab mm/slub.c:3420 [inline]
refill_objects+0x33a/0x3d0 mm/slub.c:7024
refill_sheaf mm/slub.c:2738 [inline]
__pcs_replace_empty_main+0x2b9/0x620 mm/slub.c:4483
alloc_from_pcs mm/slub.c:4586 [inline]
slab_alloc_node mm/slub.c:4720 [inline]
__do_kmalloc_node mm/slub.c:5123 [inline]
__kmalloc_noprof+0x474/0x760 mm/slub.c:5136
kmalloc_noprof include/linux/slab.h:966 [inline]
load_elf_phdrs+0x13e/0x240 fs/binfmt_elf.c:540
load_elf_binary+0xa0f/0x2980 fs/binfmt_elf.c:969
search_binary_handler fs/exec.c:1664 [inline]
exec_binprm fs/exec.c:1696 [inline]
bprm_execve+0x93d/0x1410 fs/exec.c:1748
do_execveat_common+0x50d/0x690 fs/exec.c:1846
__do_sys_execve fs/exec.c:1930 [inline]
__se_sys_execve fs/exec.c:1924 [inline]
__x64_sys_execve+0x97/0xc0 fs/exec.c:1924
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5810 tgid 5810 stack trace:
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1432 [inline]
__free_frozen_pages+0xbb9/0xd10 mm/page_alloc.c:2972
__slab_free+0x263/0x2b0 mm/slub.c:5437
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4406 [inline]
slab_alloc_node mm/slub.c:4735 [inline]
kmem_cache_alloc_noprof+0x2bc/0x650 mm/slub.c:4742
vm_area_alloc+0x24/0x140 mm/vma_init.c:32
__mmap_new_vma mm/vma.c:2514 [inline]
__mmap_region mm/vma.c:2756 [inline]
mmap_region+0x10eb/0x2240 mm/vma.c:2834
do_mmap+0xc39/0x10c0 mm/mmap.c:558
vm_mmap_pgoff+0x2c9/0x4f0 mm/util.c:581
ksys_mmap_pgoff+0x51e/0x760 mm/mmap.c:604
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Memory state around the buggy address:
ffff8880464c3700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff8880464c3780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880464c3800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8880464c3880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8880464c3900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess), 1 bytes skipped:
0: bc 02 00 00 41 mov $0x41000002,%esp
5: 81 c4 c0 fe ff ff add $0xfffffec0,%esp
b: c7 83 c8 00 00 00 00 movl $0x0,0xc8(%rbx)
12: 00 00 00
15: 48 8d 93 cc 00 00 00 lea 0xcc(%rbx),%rdx
1c: 49 89 d5 mov %rdx,%r13
1f: 49 c1 ed 03 shr $0x3,%r13
23: 43 0f b6 44 3d 00 movzbl 0x0(%r13,%r15,1),%eax
* 29: 84 c0 test %al,%al <-- trapping instruction
2b: 0f 85 a9 02 00 00 jne 0x2da
31: 44 89 a3 cc 00 00 00 mov %r12d,0xcc(%rbx)
38: 48 8d bb ba 00 00 00 lea 0xba(%rbx),%rdi