usbtmc 4-1:16.0: invalid notification: 73
usbtmc 4-1:16.0: invalid notification: 33
usbtmc 4-1:16.0: invalid notification: 36
usbtmc 4-1:16.0: invalid notification: 8
==================================================================
BUG: KASAN: slab-out-of-bounds in usbtmc_interrupt+0x4e1/0x6e0 drivers/usb/class/usbtmc.c:2313
Read of size 1 at addr ffff888100061221 by task kworker/1:2/2717
CPU: 1 UID: 0 PID: 2717 Comm: kworker/1:2 Not tainted syzkaller #0 PREEMPT(voluntary)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: usb_hub_wq hub_event
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:378 [inline]
print_report+0xcd/0x630 mm/kasan/report.c:482
kasan_report+0xe0/0x110 mm/kasan/report.c:595
usbtmc_interrupt+0x4e1/0x6e0 drivers/usb/class/usbtmc.c:2313
__usb_hcd_giveback_urb+0x38b/0x610 drivers/usb/core/hcd.c:1661
usb_hcd_giveback_urb+0x39b/0x450 drivers/usb/core/hcd.c:1745
dummy_timer+0x1814/0x3a30 drivers/usb/gadget/udc/dummy_hcd.c:1995
__run_hrtimer kernel/time/hrtimer.c:1761 [inline]
__hrtimer_run_queues+0x1ff/0xad0 kernel/time/hrtimer.c:1825
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1842
handle_softirqs+0x208/0x8d0 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xfa/0x160 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:local_lock_acquire include/linux/local_lock_internal.h:39 [inline]
RIP: 0010:__radix_tree_preload+0xd4/0x840 lib/radix-tree.c:334
Code: 48 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 39 07 00 00 44 8b 35 8a 66 67 0c 31 ff 4c 8d 63 28 44 89 f6 e8 4c e2 44 fa <45> 85 f6 75 2b e8 02 e7 44 fa 4c 89 e2 48 b8 00 00 00 00 00 fc ff
RSP: 0018:ffffc90003dfef28 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8881f5937520 RCX: ffffffff87391144
RDX: ffff888115011d00 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffffff93a077c0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881f5937548
R13: 000000000000000b R14: 0000000000000000 R15: ffff888100ac5068
idr_preload+0x1b/0x240 lib/radix-tree.c:1471
__kernfs_new_node+0xf1/0x8e0 fs/kernfs/dir.c:641
kernfs_new_node+0x13c/0x1e0 fs/kernfs/dir.c:713
__kernfs_create_file+0x53/0x350 fs/kernfs/file.c:1039
sysfs_add_file_mode_ns+0x207/0x3c0 fs/sysfs/file.c:319
create_files fs/sysfs/group.c:76 [inline]
internal_create_group+0x578/0xf30 fs/sysfs/group.c:183
internal_create_groups+0x9d/0x150 fs/sysfs/group.c:223
device_add_groups drivers/base/core.c:2836 [inline]
device_add_attrs drivers/base/core.c:2911 [inline]
device_add+0x77f/0x1aa0 drivers/base/core.c:3643
usb_create_ep_devs+0x160/0x2b0 drivers/usb/core/endpoint.c:170
create_intf_ep_devs.isra.0+0x161/0x200 drivers/usb/core/message.c:1252
usb_set_configuration+0x11a7/0x1e20 drivers/usb/core/message.c:2216
usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:250
usb_probe_device+0xef/0x3e0 drivers/usb/core/driver.c:291
call_driver_probe drivers/base/dd.c:581 [inline]
really_probe+0x241/0xa90 drivers/base/dd.c:659
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:801
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:959
bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:462
__device_attach+0x1e4/0x4b0 drivers/base/dd.c:1031
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537
device_add+0x1148/0x1aa0 drivers/base/core.c:3689
usb_new_device+0xd07/0x1a60 drivers/usb/core/hub.c:2694
hub_port_connect drivers/usb/core/hub.c:5566 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
port_event drivers/usb/core/hub.c:5870 [inline]
hub_event+0x2fce/0x5060 drivers/usb/core/hub.c:5952
process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x5b6/0x6c0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Allocated by task 2717:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:388 [inline]
__kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:405
kasan_kmalloc include/linux/kasan.h:260 [inline]
__do_kmalloc_node mm/slub.c:4365 [inline]
__kmalloc_noprof+0x213/0x4d0 mm/slub.c:4377
kmalloc_noprof include/linux/slab.h:909 [inline]
usbtmc_probe+0xa54/0x1b90 drivers/usb/class/usbtmc.c:2456
usb_probe_interface+0x300/0xa40 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:581 [inline]
really_probe+0x241/0xa90 drivers/base/dd.c:659
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:801
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:959
bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:462
__device_attach+0x1e4/0x4b0 drivers/base/dd.c:1031
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537
device_add+0x1148/0x1aa0 drivers/base/core.c:3689
usb_set_configuration+0x1187/0x1e20 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:250
usb_probe_device+0xef/0x3e0 drivers/usb/core/driver.c:291
call_driver_probe drivers/base/dd.c:581 [inline]
really_probe+0x241/0xa90 drivers/base/dd.c:659
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:801
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:831
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:959
bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:462
__device_attach+0x1e4/0x4b0 drivers/base/dd.c:1031
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:537
device_add+0x1148/0x1aa0 drivers/base/core.c:3689
usb_new_device+0xd07/0x1a60 drivers/usb/core/hub.c:2694
hub_port_connect drivers/usb/core/hub.c:5566 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5706 [inline]
port_event drivers/usb/core/hub.c:5870 [inline]
hub_event+0x2fce/0x5060 drivers/usb/core/hub.c:5952
process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x5b6/0x6c0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
The buggy address belongs to the object at ffff888100061220
which belongs to the cache kmalloc-8 of size 8
The buggy address is located 0 bytes to the right of
allocated 1-byte region [ffff888100061220, ffff888100061221)
The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x100061
flags: 0x200000000000000(node=0|zone=2)
page_type: f5(slab)
raw: 0200000000000000 ffff888100041500 ffffea00042da240 dead000000000002
raw: 0000000000000000 0000000080800080 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x0(), pid 0, tgid 0 (swapper), ts 1830878588, free_ts 0
create_dummy_stack mm/page_owner.c:94 [inline]
register_early_stack+0x89/0xd0 mm/page_owner.c:110
init_page_owner+0x52/0x7b0 mm/page_owner.c:120
invoke_init_callbacks mm/page_ext.c:148 [inline]
page_ext_init+0x7aa/0xcc0 mm/page_ext.c:486
mm_core_init+0x211/0x250 mm/mm_init.c:2789
page_owner free stack trace missing
Memory state around the buggy address:
ffff888100061100: fa fc fc fc 00 fc fc fc fa fc fc fc fa fc fc fc
ffff888100061180: 02 fc fc fc fa fc fc fc fa fc fc fc fa fc fc fc
>ffff888100061200: fa fc fc fc 01 fc fc fc 00 fc fc fc fa fc fc fc
^
ffff888100061280: 00 fc fc fc 00 fc fc fc fa fc fc fc 04 fc fc fc
ffff888100061300: 00 fc fc fc 00 fc fc fc 00 fc fc fc 00 fc fc fc
==================================================================
----------------
Code disassembly (best guess):
0: 48 89 e8 mov %rbp,%rax
3: 83 e0 07 and $0x7,%eax
6: 83 c0 03 add $0x3,%eax
9: 38 d0 cmp %dl,%al
b: 7c 08 jl 0x15
d: 84 d2 test %dl,%dl
f: 0f 85 39 07 00 00 jne 0x74e
15: 44 8b 35 8a 66 67 0c mov 0xc67668a(%rip),%r14d # 0xc6766a6
1c: 31 ff xor %edi,%edi
1e: 4c 8d 63 28 lea 0x28(%rbx),%r12
22: 44 89 f6 mov %r14d,%esi
25: e8 4c e2 44 fa call 0xfa44e276
* 2a: 45 85 f6 test %r14d,%r14d <-- trapping instruction
2d: 75 2b jne 0x5a
2f: e8 02 e7 44 fa call 0xfa44e736
34: 4c 89 e2 mov %r12,%rdx
37: 48 rex.W
38: b8 00 00 00 00 mov $0x0,%eax
3d: 00 fc add %bh,%ah
3f: ff .byte 0xff