==================================================================
BUG: KASAN: use-after-free in pn533_acr122_is_rx_frame_valid+0x151/0x160 drivers/nfc/pn533/usb.c:325
Read of size 1 at addr ffff8881668dfb94 by task kworker/0:6/5709
CPU: 0 UID: 0 PID: 5709 Comm: kworker/0:6 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: usb_hub_wq hub_event
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
print_address_description+0x55/0x1e0 mm/kasan/report.c:378
print_report+0x58/0x70 mm/kasan/report.c:482
kasan_report+0x117/0x150 mm/kasan/report.c:595
pn533_acr122_is_rx_frame_valid+0x151/0x160 drivers/nfc/pn533/usb.c:325
pn533_recv_frame+0x1c0/0x6d0 drivers/nfc/pn533/pn533.c:2203
__usb_hcd_giveback_urb+0x378/0x540 drivers/usb/core/hcd.c:1657
dummy_timer+0xa91/0x4cf0 drivers/usb/gadget/udc/dummy_hcd.c:2019
__run_hrtimer kernel/time/hrtimer.c:2067 [inline]
__hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:2124
hrtimer_run_softirq+0x1e3/0x2e0 kernel/time/hrtimer.c:2141
handle_softirqs+0x226/0x860 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758
irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:220 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:229
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 4a ab bb f5 48 89 df e8 02 23 bc f5 e8 ad 66 e8 f5 fb bf 01 00 00 00 22 32 ad f5 65 48 8b 05 9a 30 ad 07 48 85 c0 74 07 5b c3 cc cc
RSP: 0000:ffffc90004aee790 EFLAGS: 00000202
RAX: 0000000000469301 RBX: ffffc90004aeeb00 RCX: 8000000000000001
RDX: 0000000000000006 RSI: ffffffff8e475f59 RDI: 0000000000000001
RBP: ffffc90004aee8d0 R08: ffffffff907a2b7f R09: 1ffffffff20f456f
R10: dffffc0000000000 R11: fffffbfff20f4570 R12: ffff88802a09d728
R13: ffffffff8be638b2 R14: ffffc90004aeeb00 R15: dffffc0000000000
do_wait_for_common kernel/sched/completion.c:99 [inline]
__wait_for_common kernel/sched/completion.c:121 [inline]
wait_for_common kernel/sched/completion.c:132 [inline]
wait_for_completion+0x2c2/0x5e0 kernel/sched/completion.c:153
pn533_send_cmd_sync drivers/nfc/pn533/pn533.c:640 [inline]
pn533_get_firmware_version drivers/nfc/pn533/pn533.c:2535 [inline]
pn533_finalize_setup+0x2ad/0xf80 drivers/nfc/pn533/pn533.c:2732
pn533_usb_probe+0xd37/0x10e0 drivers/nfc/pn533/usb.c:570
usb_probe_interface+0x788/0xe50 drivers/usb/core/driver.c:399
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x254/0xae0 drivers/base/dd.c:706
__driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868
driver_probe_device+0x4f/0x240 drivers/base/dd.c:898
__device_attach_driver+0x270/0x410 drivers/base/dd.c:1026
bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500
__device_attach+0x2c4/0x450 drivers/base/dd.c:1098
device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153
bus_probe_device+0x12a/0x220 drivers/base/bus.c:620
device_add+0x7d7/0xb80 drivers/base/core.c:3776
usb_set_configuration+0x1ad8/0x2180 drivers/usb/core/message.c:2268
usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250
usb_probe_device+0x1c3/0x3b0 drivers/usb/core/driver.c:293
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x254/0xae0 drivers/base/dd.c:706
__driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868
driver_probe_device+0x4f/0x240 drivers/base/dd.c:898
__device_attach_driver+0x270/0x410 drivers/base/dd.c:1026
bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500
__device_attach+0x2c4/0x450 drivers/base/dd.c:1098
device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153
bus_probe_device+0x12a/0x220 drivers/base/bus.c:620
device_add+0x7d7/0xb80 drivers/base/core.c:3776
usb_new_device+0x9aa/0x1690 drivers/usb/core/hub.c:2708
hub_port_connect drivers/usb/core/hub.c:5580 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5720 [inline]
port_event drivers/usb/core/hub.c:5884 [inline]
hub_event+0x28e8/0x4d30 drivers/usb/core/hub.c:5966
process_one_work kernel/workqueue.c:3396 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 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 physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1668df
flags: 0x57ff00000000000(node=1|zone=2|lastcpupid=0x7ff)
raw: 057ff00000000000 ffffea00059a37c8 ffffea00059a37c8 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)
Memory state around the buggy address:
ffff8881668dfa80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881668dfb00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881668dfb80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff8881668dfc00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881668dfc80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
----------------
Code disassembly (best guess):
0: 90 nop
1: f3 0f 1e fa endbr64
5: 53 push %rbx
6: 48 89 fb mov %rdi,%rbx
9: 48 83 c7 18 add $0x18,%rdi
d: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
12: e8 4a ab bb f5 call 0xf5bbab61
17: 48 89 df mov %rbx,%rdi
1a: e8 02 23 bc f5 call 0xf5bc2321
1f: e8 ad 66 e8 f5 call 0xf5e866d1
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 22 32 ad f5 call 0xf5ad3251 <-- trapping instruction
2f: 65 48 8b 05 9a 30 ad mov %gs:0x7ad309a(%rip),%rax # 0x7ad30d1
36: 07
37: 48 85 c0 test %rax,%rax
3a: 74 07 je 0x43
3c: 5b pop %rbx
3d: c3 ret
3e: cc int3
3f: cc int3