Extracting prog: 3m4.127133898s
Minimizing prog: 12m5.321082728s
Simplifying prog options: 0s
Extracting C: 1m36.379907535s
Simplifying C: 9m57.24962818s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)={{0x12, 0x1, 0x310, 0x28, 0xd2, 0xc9, 0x20, 0x1039, 0x2131, 0x86ad, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x2, 0xe, 0x6, 0x10, 0x3, "", [{{0x9, 0x4, 0xdb, 0xd8, 0x0, 0xc, 0xa9, 0x5a, 0x8}}, {{0x9, 0x4, 0x65, 0x5, 0x0, 0xff, 0x5f, 0x53, 0x2}}]}}]}}, &(0x7f0000000340)={0x0, 0x0, 0x0, 0x0})

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)={{0x12, 0x1, 0x310, 0x28, 0xd2, 0xc9, 0x20, 0x1039, 0x2131, 0x86ad, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x2, 0xe, 0x6, 0x10, 0x3, "", [{{0x9, 0x4, 0xdb, 0xd8, 0x0, 0xc, 0xa9, 0x5a, 0x8}}, {{0x9, 0x4, 0x65, 0x5, 0x0, 0xff, 0x5f, 0x53, 0x2}}]}}]}}, &(0x7f0000000340)={0x0, 0x0, 0x0, 0x0})

program crashed: KASAN: slab-use-after-free Read in uea_upload_pre_firmware
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x0, 0x0, &(0x7f0000000340)={0x0, 0x0, 0x0, 0x0})

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)={{0x12, 0x1, 0x310, 0x28, 0xd2, 0xc9, 0x20, 0x1039, 0x2131, 0x86ad, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x2, 0xe, 0x6, 0x10, 0x3, "", [{{0x9, 0x4, 0xdb, 0xd8, 0x0, 0xc, 0xa9, 0x5a, 0x8}}, {{0x9, 0x4, 0x65, 0x5, 0x0, 0xff, 0x5f, 0x53, 0x2}}]}}]}}, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in uea_upload_pre_firmware
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in uea_upload_pre_firmware
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in uea_upload_pre_firmware
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in uea_upload_pre_firmware
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in uea_upload_pre_firmware
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in uea_upload_pre_firmware
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in uea_upload_pre_firmware
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in uea_upload_pre_firmware
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)={{0x12, 0x1, 0x310, 0x28, 0xd2, 0xc9, 0x20, 0x1039, 0x2131, 0x86ad, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x2, 0xe, 0x6, 0x10, 0x3, "", [{{0x9, 0x4, 0xdb, 0xd8, 0x0, 0xc, 0xa9, 0x5a, 0x8}}, {{0x9, 0x4, 0x65, 0x5, 0x0, 0xff, 0x5f, 0x53, 0x2}}]}}]}}, &(0x7f0000000340)={0x0, 0x0, 0x0, 0x0})

program crashed: KASAN: slab-use-after-free Read in uea_upload_pre_firmware
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)={{0x12, 0x1, 0x310, 0x28, 0xd2, 0xc9, 0x20, 0x1039, 0x2131, 0x86ad, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x2, 0xe, 0x6, 0x10, 0x3, "", [{{0x9, 0x4, 0xdb, 0xd8, 0x0, 0xc, 0xa9, 0x5a, 0x8}}, {{0x9, 0x4, 0x65, 0x5, 0x0, 0xff, 0x5f, 0x53, 0x2}}]}}]}}, &(0x7f0000000340)={0x0, 0x0, 0x0, 0x0})

program crashed: KASAN: slab-use-after-free Read in uea_upload_pre_firmware
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2d, &(0x7f0000000000)={{0x12, 0x1, 0x310, 0x28, 0xd2, 0xc9, 0x20, 0x1039, 0x2131, 0x86ad, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b, 0x2, 0xe, 0x6, 0x10, 0x3, "", [{{0x9, 0x4, 0xdb, 0xd8, 0x0, 0xc, 0xa9, 0x5a, 0x8}}, {{0x9, 0x4, 0x65, 0x5, 0x0, 0xff, 0x5f, 0x53, 0x2}}]}}]}}, &(0x7f0000000340)={0x0, 0x0, 0x0, 0x0})

program crashed: KASAN: slab-use-after-free Read in uea_upload_pre_firmware
validation run: crashed=true
reproducing took 31m13.479260203s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in __intf_to_usbdev include/linux/usb.h:752 [inline]
BUG: KASAN: slab-use-after-free in uea_upload_pre_firmware+0x98/0x3f8 drivers/usb/atm/ueagle-atm.c:598
Read of size 8 at addr ffff0000da9000b8 by task kworker/0:5/4935

CPU: 0 UID: 0 PID: 4935 Comm: kworker/0:5 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
Workqueue: events request_firmware_work_func
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_address_description+0xb0/0x238 mm/kasan/report.c:378
 print_report+0x68/0x84 mm/kasan/report.c:482
 kasan_report+0x8c/0xc4 mm/kasan/report.c:595
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 __intf_to_usbdev include/linux/usb.h:752 [inline]
 uea_upload_pre_firmware+0x98/0x3f8 drivers/usb/atm/ueagle-atm.c:598
 request_firmware_work_func+0xe8/0x24c drivers/base/firmware_loader/main.c:1164
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842

Allocated by task 10:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:78
 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:570
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0x9c/0xb4 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x2e8/0x5ec mm/slub.c:5515
 _kmalloc_noprof include/linux/slab.h:969 [inline]
 _kzalloc_noprof include/linux/slab.h:1290 [inline]
 usb_set_configuration+0x2f4/0x158c drivers/usb/core/message.c:2096
 usb_generic_driver_probe+0x8c/0x148 drivers/usb/core/generic.c:250
 usb_probe_device+0x114/0x2b0 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x29c/0x800 drivers/base/dd.c:706
 __driver_probe_device+0x1e0/0x350 drivers/base/dd.c:868
 driver_probe_device+0x6c/0x19c drivers/base/dd.c:898
 __device_attach_driver+0x198/0x2f8 drivers/base/dd.c:1026
 bus_for_each_drv+0x144/0x1dc drivers/base/bus.c:500
 __device_attach+0x248/0x390 drivers/base/dd.c:1098
 device_initial_probe+0x90/0xc8 drivers/base/dd.c:1153
 bus_probe_device+0x58/0x120 drivers/base/bus.c:620
 device_add+0x6cc/0x9e0 drivers/base/core.c:3772
 usb_new_device+0x9bc/0x11f0 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+0x1ef0/0x39fc drivers/usb/core/hub.c:5953
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842

Freed by task 10:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:78
 kasan_save_free_info+0x58/0x70 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x74/0xa4 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2705 [inline]
 slab_free mm/slub.c:6405 [inline]
 kfree+0x188/0x690 mm/slub.c:6720
 usb_release_interface+0xf0/0x13c drivers/usb/core/message.c:1840
 device_release+0xb4/0x1d4 drivers/base/core.c:-1
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1dc/0x4b8 lib/kobject.c:737
 put_device+0x28/0x40 drivers/base/core.c:3880
 usb_disable_device+0x400/0x670 drivers/usb/core/message.c:1485
 usb_disconnect+0x230/0x6f8 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+0x299c/0x39fc drivers/usb/core/hub.c:5953
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842

The buggy address belongs to the object at ffff0000da900000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 184 bytes inside of
 freed 2048-byte region [ffff0000da900000, ffff0000da900800)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff0000da902000 pfn:0x11a900
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x5ffc00000000240(workingset|head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000240 ffff0000c0002000 fffffdffc33e9210 fffffdffc3453a10
raw: ffff0000da902000 0000000800080005 00000000f5000000 0000000000000000
head: 05ffc00000000240 ffff0000c0002000 fffffdffc33e9210 fffffdffc3453a10
head: ffff0000da902000 0000000800080005 00000000f5000000 0000000000000000
head: 05ffc00000000003 fffffdffc36a4001 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000da8fff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000da900000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000da900080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff0000da900100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000da900180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
usb 1-1: [UEAGLE-ATM] firmware is not available
Unable to handle kernel paging request at virtual address dfff800000000001
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0
[dfff800000000001] address between user and kernel address ranges

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in __intf_to_usbdev include/linux/usb.h:752 [inline]
BUG: KASAN: slab-use-after-free in uea_upload_pre_firmware+0x98/0x3f8 drivers/usb/atm/ueagle-atm.c:598
Read of size 8 at addr ffff0000da9000b8 by task kworker/0:5/4935

CPU: 0 UID: 0 PID: 4935 Comm: kworker/0:5 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
Workqueue: events request_firmware_work_func
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_address_description+0xb0/0x238 mm/kasan/report.c:378
 print_report+0x68/0x84 mm/kasan/report.c:482
 kasan_report+0x8c/0xc4 mm/kasan/report.c:595
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 __intf_to_usbdev include/linux/usb.h:752 [inline]
 uea_upload_pre_firmware+0x98/0x3f8 drivers/usb/atm/ueagle-atm.c:598
 request_firmware_work_func+0xe8/0x24c drivers/base/firmware_loader/main.c:1164
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842

Allocated by task 10:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:78
 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:570
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0x9c/0xb4 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x2e8/0x5ec mm/slub.c:5515
 _kmalloc_noprof include/linux/slab.h:969 [inline]
 _kzalloc_noprof include/linux/slab.h:1290 [inline]
 usb_set_configuration+0x2f4/0x158c drivers/usb/core/message.c:2096
 usb_generic_driver_probe+0x8c/0x148 drivers/usb/core/generic.c:250
 usb_probe_device+0x114/0x2b0 drivers/usb/core/driver.c:291
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x29c/0x800 drivers/base/dd.c:706
 __driver_probe_device+0x1e0/0x350 drivers/base/dd.c:868
 driver_probe_device+0x6c/0x19c drivers/base/dd.c:898
 __device_attach_driver+0x198/0x2f8 drivers/base/dd.c:1026
 bus_for_each_drv+0x144/0x1dc drivers/base/bus.c:500
 __device_attach+0x248/0x390 drivers/base/dd.c:1098
 device_initial_probe+0x90/0xc8 drivers/base/dd.c:1153
 bus_probe_device+0x58/0x120 drivers/base/bus.c:620
 device_add+0x6cc/0x9e0 drivers/base/core.c:3772
 usb_new_device+0x9bc/0x11f0 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+0x1ef0/0x39fc drivers/usb/core/hub.c:5953
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842

Freed by task 10:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:78
 kasan_save_free_info+0x58/0x70 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x74/0xa4 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2705 [inline]
 slab_free mm/slub.c:6405 [inline]
 kfree+0x188/0x690 mm/slub.c:6720
 usb_release_interface+0xf0/0x13c drivers/usb/core/message.c:1840
 device_release+0xb4/0x1d4 drivers/base/core.c:-1
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1dc/0x4b8 lib/kobject.c:737
 put_device+0x28/0x40 drivers/base/core.c:3880
 usb_disable_device+0x400/0x670 drivers/usb/core/message.c:1485
 usb_disconnect+0x230/0x6f8 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+0x299c/0x39fc drivers/usb/core/hub.c:5953
 process_one_work kernel/workqueue.c:3322 [inline]
 process_scheduled_works+0x788/0x10b8 kernel/workqueue.c:3405
 worker_thread+0x798/0xbd0 kernel/workqueue.c:3486
 kthread+0x304/0x3d4 kernel/kthread.c:436
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:842

The buggy address belongs to the object at ffff0000da900000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 184 bytes inside of
 freed 2048-byte region [ffff0000da900000, ffff0000da900800)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff0000da902000 pfn:0x11a900
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x5ffc00000000240(workingset|head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000240 ffff0000c0002000 fffffdffc33e9210 fffffdffc3453a10
raw: ffff0000da902000 0000000800080005 00000000f5000000 0000000000000000
head: 05ffc00000000240 ffff0000c0002000 fffffdffc33e9210 fffffdffc3453a10
head: ffff0000da902000 0000000800080005 00000000f5000000 0000000000000000
head: 05ffc00000000003 fffffdffc36a4001 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000da8fff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000da900000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000da900080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff0000da900100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000da900180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
usb 1-1: [UEAGLE-ATM] firmware is not available
Unable to handle kernel paging request at virtual address dfff800000000001
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0
[dfff800000000001] address between user and kernel address ranges