vhci_hcd: stop threads
vhci_hcd: release socket
vhci_hcd: disconnect device
vhci_hcd: stop threads
vhci_hcd: release socket
vhci_hcd: disconnect device
vhci_hcd: stop threads
vhci_hcd: release socket
vhci_hcd: disconnect device
vhci_hcd: stop threads
vhci_hcd: release socket
vhci_hcd: disconnect device
vhci_hcd: stop threads
vhci_hcd: release socket
vhci_hcd: release socket
vhci_hcd: disconnect device
vhci_hcd: stop threads
vhci_hcd: release socket
vhci_hcd: disconnect device
vhci_hcd: stop threads
vhci_hcd: release socket
vhci_hcd: disconnect device
vhci_hcd: stop threads
vhci_hcd: release socket
vhci_hcd: disconnect device
==================================================================
BUG: KASAN: slab-use-after-free in __wake_up_common kernel/sched/wait.c:99 [inline]
BUG: KASAN: slab-use-after-free in __wake_up_common_lock+0x94/0x1e0 kernel/sched/wait.c:125
Read of size 8 at addr ffff88802920dd78 by task kworker/u8:10/1864
CPU: 1 UID: 0 PID: 1864 Comm: kworker/u8:10 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: usbip_event event_handler
Call Trace:
<TASK>
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0xca/0x240 mm/kasan/report.c:482
kasan_report+0x118/0x150 mm/kasan/report.c:595
__wake_up_common kernel/sched/wait.c:99 [inline]
__wake_up_common_lock+0x94/0x1e0 kernel/sched/wait.c:125
event_handler+0x3cc/0x480 drivers/usb/usbip/usbip_event.c:96
process_one_work kernel/workqueue.c:3263 [inline]
process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
Allocated by task 1:
kasan_save_stack mm/kasan/common.c:56 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
poison_kmalloc_redzone mm/kasan/common.c:400 [inline]
__kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:417
kasan_kmalloc include/linux/kasan.h:262 [inline]
__do_kmalloc_node mm/slub.c:5634 [inline]
__kmalloc_noprof+0x233/0x7d0 mm/slub.c:5646
kmalloc_noprof include/linux/slab.h:961 [inline]
kzalloc_noprof include/linux/slab.h:1094 [inline]
__usb_create_hcd+0x68/0x930 drivers/usb/core/hcd.c:2570
vhci_hcd_probe+0x103/0x380 drivers/usb/usbip/vhci_hcd.c:1374
platform_probe+0xf9/0x190 drivers/base/platform.c:1405
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x26d/0x9e0 drivers/base/dd.c:659
__driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
__device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
bus_for_each_drv+0x254/0x2e0 drivers/base/bus.c:462
__device_attach+0x2bb/0x400 drivers/base/dd.c:1031
bus_probe_device+0x188/0x260 drivers/base/bus.c:537
device_add+0x7b6/0xb50 drivers/base/core.c:3689
platform_device_add+0x4b4/0x820 drivers/base/platform.c:716
platform_device_register_full+0x46c/0x570 drivers/base/platform.c:844
vhci_hcd_init+0x1bc/0x320 drivers/usb/usbip/vhci_hcd.c:1555
do_one_initcall+0x236/0x820 init/main.c:1283
do_initcall_level+0x104/0x190 init/main.c:1345
do_initcalls+0x59/0xa0 init/main.c:1361
kernel_init_freeable+0x334/0x4b0 init/main.c:1593
kernel_init+0x1d/0x1d0 init/main.c:1483
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Freed by task 1:
kasan_save_stack mm/kasan/common.c:56 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:77
__kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:587
kasan_save_free_info mm/kasan/kasan.h:406 [inline]
poison_slab_object mm/kasan/common.c:252 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:284
kasan_slab_free include/linux/kasan.h:234 [inline]
slab_free_hook mm/slub.c:2530 [inline]
slab_free mm/slub.c:6619 [inline]
kfree+0x197/0x950 mm/slub.c:6826
vhci_hcd_probe+0x2a7/0x380 drivers/usb/usbip/vhci_hcd.c:1413
platform_probe+0xf9/0x190 drivers/base/platform.c:1405
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x26d/0x9e0 drivers/base/dd.c:659
__driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
__device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
bus_for_each_drv+0x254/0x2e0 drivers/base/bus.c:462
__device_attach+0x2bb/0x400 drivers/base/dd.c:1031
bus_probe_device+0x188/0x260 drivers/base/bus.c:537
device_add+0x7b6/0xb50 drivers/base/core.c:3689
platform_device_add+0x4b4/0x820 drivers/base/platform.c:716
platform_device_register_full+0x46c/0x570 drivers/base/platform.c:844
vhci_hcd_init+0x1bc/0x320 drivers/usb/usbip/vhci_hcd.c:1555
do_one_initcall+0x236/0x820 init/main.c:1283
do_initcall_level+0x104/0x190 init/main.c:1345
do_initcalls+0x59/0xa0 init/main.c:1361
kernel_init_freeable+0x334/0x4b0 init/main.c:1593
kernel_init+0x1d/0x1d0 init/main.c:1483
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Last potentially related work creation:
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:56
kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:559
insert_work+0x3d/0x330 kernel/workqueue.c:2186
__queue_work+0xd63/0x1010 kernel/workqueue.c:2341
queue_work_on+0x181/0x270 kernel/workqueue.c:2392
rh_call_control drivers/usb/core/hcd.c:711 [inline]
rh_urb_enqueue drivers/usb/core/hcd.c:821 [inline]
usb_hcd_submit_urb+0x1505/0x1a80 drivers/usb/core/hcd.c:1542
usb_start_wait_urb+0x114/0x4c0 drivers/usb/core/message.c:59
usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
usb_control_msg+0x232/0x3e0 drivers/usb/core/message.c:154
hub_power_on+0x1b6/0x410 arch/x86/include/asm/bitops.h:-1
hub_activate+0x35c/0x1a60 drivers/usb/core/hub.c:1143
hub_configure drivers/usb/core/hub.c:1770 [inline]
hub_probe+0x293a/0x3830 drivers/usb/core/hub.c:2005
usb_probe_interface+0x668/0xc30 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x26d/0x9e0 drivers/base/dd.c:659
__driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
__device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
bus_for_each_drv+0x254/0x2e0 drivers/base/bus.c:462
__device_attach+0x2bb/0x400 drivers/base/dd.c:1031
bus_probe_device+0x188/0x260 drivers/base/bus.c:537
device_add+0x7b6/0xb50 drivers/base/core.c:3689
usb_set_configuration+0x1a87/0x20e0 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250
usb_probe_device+0x1c4/0x390 drivers/usb/core/driver.c:291
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x26d/0x9e0 drivers/base/dd.c:659
__driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
__device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
bus_for_each_drv+0x254/0x2e0 drivers/base/bus.c:462
__device_attach+0x2bb/0x400 drivers/base/dd.c:1031
bus_probe_device+0x188/0x260 drivers/base/bus.c:537
device_add+0x7b6/0xb50 drivers/base/core.c:3689
usb_new_device+0xa29/0x16e0 drivers/usb/core/hub.c:2694
register_root_hub+0x275/0x590 drivers/usb/core/hcd.c:994
usb_add_hcd+0xba1/0x1050 drivers/usb/core/hcd.c:2993
vhci_hcd_probe+0x144/0x380 drivers/usb/usbip/vhci_hcd.c:1385
platform_probe+0xf9/0x190 drivers/base/platform.c:1405
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x26d/0x9e0 drivers/base/dd.c:659
__driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
__device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
bus_for_each_drv+0x254/0x2e0 drivers/base/bus.c:462
__device_attach+0x2bb/0x400 drivers/base/dd.c:1031
bus_probe_device+0x188/0x260 drivers/base/bus.c:537
device_add+0x7b6/0xb50 drivers/base/core.c:3689
platform_device_add+0x4b4/0x820 drivers/base/platform.c:716
platform_device_register_full+0x46c/0x570 drivers/base/platform.c:844
vhci_hcd_init+0x1bc/0x320 drivers/usb/usbip/vhci_hcd.c:1555
do_one_initcall+0x236/0x820 init/main.c:1283
do_initcall_level+0x104/0x190 init/main.c:1345
do_initcalls+0x59/0xa0 init/main.c:1361
kernel_init_freeable+0x334/0x4b0 init/main.c:1593
kernel_init+0x1d/0x1d0 init/main.c:1483
ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Second to last potentially related work creation:
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:56
kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:559
insert_work+0x3d/0x330 kernel/workqueue.c:2186
__queue_work+0xd63/0x1010 kernel/workqueue.c:2341
queue_work_on+0x181/0x270 kernel/workqueue.c:2392
rh_call_control drivers/usb/core/hcd.c:711 [inline]
rh_urb_enqueue drivers/usb/core/hcd.c:821 [inline]
usb_hcd_submit_urb+0x1505/0x1a80 drivers/usb/core/hcd.c:1542
usb_start_wait_urb+0x114/0x4c0 drivers/usb/core/message.c:59
usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
usb_control_msg+0x232/0x3e0 drivers/usb/core/message.c:154
hub_power_on+0x1b6/0x410 arch/x86/include/asm/bitops.h:-1
hub_activate+0x35c/0x1a60 drivers/usb/core/hub.c:1143
hub_configure drivers/usb/core/hub.c:1770 [inline]
hub_probe+0x293a/0x3830 drivers/usb/core/hub.c:2005
usb_probe_interface+0x668/0xc30 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x26d/0x9e0 drivers/base/dd.c:659
__driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
__device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
bus_for_each_drv+0x254/0x2e0 drivers/base/bus.c:462
__device_attach+0x2bb/0x400 drivers/base/dd.c:1031
bus_probe_device+0x188/0x260 drivers/base/bus.c:537
device_add+0x7b6/0xb50 drivers/base/core.c:3689
usb_set_configuration+0x1a87/0x20e0 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250
usb_probe_device+0x1c4/0x390 drivers/usb/core/driver.c:291
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x26d/0x9e0 drivers/base/dd.c:659
__driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
__device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
bus_for_each_drv+0x254/0x2e0 drivers/base/bus.c:462
__device_attach+0x2bb/0x400 drivers/base/dd.c:1031
bus_probe_device+0x188/0x260 drivers/base/bus.c:537
device_add+0x7b6/0xb50 drivers/base/core.c:3689
usb_new_device+0xa29/0x16e0 drivers/usb/core/hub.c:2694
register_root_hub+0x275/0x590 drivers/usb/core/hcd.c:994
usb_add_hcd+0xba1/0x1050 drivers/usb/core/hcd.c:2993
vhci_hcd_probe+0x144/0x380 drivers/usb/usbip/vhci_hcd.c:1385
platform_probe+0xf9/0x190 drivers/base/platform.c:1405
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x26d/0x9e0 drivers/base/dd.c:659
__driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
__device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
bus_for_each_drv+0x254/0x2e0 drivers/base/bus.c:462
__device_attach+0x2bb/0x400 drivers/base/dd.c:1031
bus_probe_device+0x188/0x260 drivers/base/bus.c:537
device_add+0x7b6/0xb50 drivers/base/core.c:3689
platform_device_add+0x4b4/0x820 drivers/base/platform.c:716
platform_device_register_full+0x46c/0x570 drivers/base/platform.c:844
vhci_hcd_init+0x1bc/0x320 drivers/usb/usbip/vhci_hcd.c:1555
do_one_initcall+0x236/0x820 init/main.c:1283
do_initcall_level+0x104/0x190 init/main.c:1345
do_initcalls+0x59/0xa0 init/main.c:1361
kernel_init_freeable+0x334/0x4b0 init/main.c:1593
kernel_init+0x1d/0x1d0 init/main.c:1483
ret_from_fork+0x4bc/0x870 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 ffff88802920c000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 7544 bytes inside of
freed 8192-byte region [ffff88802920c000, ffff88802920e000)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x29208
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x80000000000040(head|node=0|zone=1)
page_type: f5(slab)
raw: 0080000000000040 ffff88813ff27280 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
head: 0080000000000040 ffff88813ff27280 dead000000000122 0000000000000000
head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
head: 0080000000000003 ffffea0000a48201 00000000ffffffff 00000000ffffffff
head: 0000000000000000 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 1, tgid 1 (swapper/0), ts 13810714540, free_ts 0
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
prep_new_page mm/page_alloc.c:1858 [inline]
get_page_from_freelist+0x28c0/0x2960 mm/page_alloc.c:3884
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183
alloc_pages_mpol+0xd1/0x380 mm/mempolicy.c:2416
alloc_slab_page mm/slub.c:3046 [inline]
allocate_slab+0x96/0x3a0 mm/slub.c:3219
new_slab mm/slub.c:3273 [inline]
___slab_alloc+0xb12/0x13f0 mm/slub.c:4643
__slab_alloc+0xc6/0x1f0 mm/slub.c:4762
__slab_alloc_node mm/slub.c:4838 [inline]
slab_alloc_node mm/slub.c:5260 [inline]
__do_kmalloc_node mm/slub.c:5633 [inline]
__kmalloc_noprof+0x14b/0x7d0 mm/slub.c:5646
kmalloc_noprof include/linux/slab.h:961 [inline]
kzalloc_noprof include/linux/slab.h:1094 [inline]
__usb_create_hcd+0x68/0x930 drivers/usb/core/hcd.c:2570
vhci_hcd_probe+0x1a9/0x380 drivers/usb/usbip/vhci_hcd.c:1391
platform_probe+0xf9/0x190 drivers/base/platform.c:1405
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x26d/0x9e0 drivers/base/dd.c:659
__driver_probe_device+0x18c/0x2f0 drivers/base/dd.c:801
driver_probe_device+0x4f/0x430 drivers/base/dd.c:831
__device_attach_driver+0x2ce/0x530 drivers/base/dd.c:959
bus_for_each_drv+0x254/0x2e0 drivers/base/bus.c:462
page_owner free stack trace missing
Memory state around the buggy address:
ffff88802920dc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88802920dc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88802920dd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88802920dd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88802920de00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================