Extracting prog: 4m23.595703038s
Minimizing prog: 7m43.591425254s
Simplifying prog options: 0s
Extracting C: 38.343189836s
Simplifying C: 10m6.636015902s
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:4 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(0x5, 0x48, &(0x7f0000000800)={{0x12, 0x1, 0x110, 0xa8, 0xa5, 0xaf, 0x20, 0x2040, 0xb900, 0xc159, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x36, 0x3, 0x7, 0x5, 0x60, 0xf, "", [{{0x9, 0x4, 0x7c, 0x23, 0x0, 0x53, 0x5c, 0x28, 0x2}}, {{0x9, 0x4, 0x0, 0xa3, 0x2, 0xda, 0x38, 0xad, 0xf2, [], [{{0x9, 0x5, 0x85, 0x2, 0x8, 0x6, 0xd, 0xc0}}, {{0x9, 0x5, 0x9, 0x14, 0x200, 0x8, 0x5, 0x7d}}]}}, {{0x9, 0x4, 0x34, 0x10, 0x0, 0x6, 0x81, 0x76, 0x6}}]}}]}}, 0x0)
program did not crash
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:4 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(0x5, 0x48, &(0x7f0000000800)={{0x12, 0x1, 0x110, 0xa8, 0xa5, 0xaf, 0x20, 0x2040, 0xb900, 0xc159, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x36, 0x3, 0x7, 0x5, 0x60, 0xf, "", [{{0x9, 0x4, 0x7c, 0x23, 0x0, 0x53, 0x5c, 0x28, 0x2}}, {{0x9, 0x4, 0x0, 0xa3, 0x2, 0xda, 0x38, 0xad, 0xf2, [], [{{0x9, 0x5, 0x85, 0x2, 0x8, 0x6, 0xd, 0xc0}}, {{0x9, 0x5, 0x9, 0x14, 0x200, 0x8, 0x5, 0x7d}}]}}, {{0x9, 0x4, 0x34, 0x10, 0x0, 0x6, 0x81, 0x76, 0x6}}]}}]}}, 0x0)
program crashed: WARNING in usb_free_urb
single: successfully extracted reproducer
found reproducer with 1 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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(0x5, 0x0, 0x0, 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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: WARNING in usb_free_urb
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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: WARNING in usb_free_urb
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: WARNING in usb_free_urb
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: WARNING in usb_free_urb
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: WARNING in usb_free_urb
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: WARNING in usb_free_urb
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: WARNING in usb_free_urb
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: WARNING in usb_free_urb
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(0x5, 0x48, &(0x7f0000000800)={{0x12, 0x1, 0x110, 0xa8, 0xa5, 0xaf, 0x20, 0x2040, 0xb900, 0xc159, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x36, 0x3, 0x7, 0x5, 0x60, 0xf, "", [{{0x9, 0x4, 0x7c, 0x23, 0x0, 0x53, 0x5c, 0x28, 0x2}}, {{0x9, 0x4, 0x0, 0xa3, 0x2, 0xda, 0x38, 0xad, 0xf2, [], [{{0x9, 0x5, 0x85, 0x2, 0x8, 0x6, 0xd, 0xc0}}, {{0x9, 0x5, 0x9, 0x14, 0x200, 0x8, 0x5, 0x7d}}]}}, {{0x9, 0x4, 0x34, 0x10, 0x0, 0x6, 0x81, 0x76, 0x6}}]}}]}}, 0x0)
program crashed: WARNING in usb_free_urb
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(0x5, 0x48, &(0x7f0000000800)={{0x12, 0x1, 0x110, 0xa8, 0xa5, 0xaf, 0x20, 0x2040, 0xb900, 0xc159, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x36, 0x3, 0x7, 0x5, 0x60, 0xf, "", [{{0x9, 0x4, 0x7c, 0x23, 0x0, 0x53, 0x5c, 0x28, 0x2}}, {{0x9, 0x4, 0x0, 0xa3, 0x2, 0xda, 0x38, 0xad, 0xf2, [], [{{0x9, 0x5, 0x85, 0x2, 0x8, 0x6, 0xd, 0xc0}}, {{0x9, 0x5, 0x9, 0x14, 0x200, 0x8, 0x5, 0x7d}}]}}, {{0x9, 0x4, 0x34, 0x10, 0x0, 0x6, 0x81, 0x76, 0x6}}]}}]}}, 0x0)
program crashed: WARNING in usb_free_urb
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(0x5, 0x48, &(0x7f0000000800)={{0x12, 0x1, 0x110, 0xa8, 0xa5, 0xaf, 0x20, 0x2040, 0xb900, 0xc159, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x36, 0x3, 0x7, 0x5, 0x60, 0xf, "", [{{0x9, 0x4, 0x7c, 0x23, 0x0, 0x53, 0x5c, 0x28, 0x2}}, {{0x9, 0x4, 0x0, 0xa3, 0x2, 0xda, 0x38, 0xad, 0xf2, [], [{{0x9, 0x5, 0x85, 0x2, 0x8, 0x6, 0xd, 0xc0}}, {{0x9, 0x5, 0x9, 0x14, 0x200, 0x8, 0x5, 0x7d}}]}}, {{0x9, 0x4, 0x34, 0x10, 0x0, 0x6, 0x81, 0x76, 0x6}}]}}]}}, 0x0)
program crashed: WARNING in usb_free_urb
validation run: crashed=true
reproducing took 27m37.622913147s
repro crashed as (corrupted=false):
------------[ cut here ]------------
!PageLargeKmalloc(page)
WARNING: mm/slub.c:6471 at free_large_kmalloc+0x9b/0x110 mm/slub.c:6471, CPU#1: kworker/1:3/5897
Modules linked in:
CPU: 1 UID: 0 PID: 5897 Comm: kworker/1:3 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:free_large_kmalloc+0x9b/0x110 mm/slub.c:6471
Code: 8b 43 30 83 f8 ff 74 13 25 00 00 00 ff 3d 00 00 00 f8 75 74 c7 43 30 ff ff ff ff 48 89 df 89 ee 5b 41 5e 5d e9 96 c8 fc ff 90 <0f> 0b 90 48 89 df 48 c7 c6 13 fb 9a 8d 5b 41 5e 5d e9 df a9 04 ff
RSP: 0018:ffffc90003f5eb20 EFLAGS: 00010206
RAX: 00000000ff000000 RBX: ffffea0001751880 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffff88805d462000 RDI: ffffea0001751880
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1006dd2b41 R12: 1ffff110080e2e82
R13: ffff88802c1f4380 R14: ffff888036e95a60 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888125b68000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000565060955030 CR3: 000000002a826000 CR4: 00000000003526f0
Call Trace:
urb_destroy drivers/usb/core/urb.c:25 [inline]
kref_put include/linux/kref.h:65 [inline]
usb_free_urb+0xd0/0x120 drivers/usb/core/urb.c:96
smsusb_term_device+0x1d7/0x3e0 drivers/media/usb/siano/smsusb.c:352
smsusb_init_device drivers/media/usb/siano/smsusb.c:497 [inline]
smsusb_probe+0x1aba/0x2280 drivers/media/usb/siano/smsusb.c:575
usb_probe_interface+0x659/0xc70 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x267/0xaf0 drivers/base/dd.c:709
__driver_probe_device+0x1ef/0x380 drivers/base/dd.c:871
driver_probe_device+0x4f/0x240 drivers/base/dd.c:901
__device_attach_driver+0x279/0x430 drivers/base/dd.c:1029
bus_for_each_drv+0x25b/0x2f0 drivers/base/bus.c:500
__device_attach+0x2c8/0x450 drivers/base/dd.c:1101
device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1156
bus_probe_device+0x12d/0x220 drivers/base/bus.c:613
device_add+0x7e9/0xbb0 drivers/base/core.c:3706
usb_set_configuration+0x1a87/0x2110 drivers/usb/core/message.c:2268
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:709
__driver_probe_device+0x1ef/0x380 drivers/base/dd.c:871
driver_probe_device+0x4f/0x240 drivers/base/dd.c:901
__device_attach_driver+0x279/0x430 drivers/base/dd.c:1029
bus_for_each_drv+0x25b/0x2f0 drivers/base/bus.c:500
__device_attach+0x2c8/0x450 drivers/base/dd.c:1101
device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1156
bus_probe_device+0x12d/0x220 drivers/base/bus.c:613
device_add+0x7e9/0xbb0 drivers/base/core.c:3706
usb_new_device+0x9f8/0x16e0 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+0x2a49/0x4f60 drivers/usb/core/hub.c:5953
process_one_work kernel/workqueue.c:3308 [inline]
process_scheduled_works+0xb68/0x1910 kernel/workqueue.c:3399
worker_thread+0xa90/0x1040 kernel/workqueue.c:3485
kthread+0x388/0x470 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
final repro crashed as (corrupted=false):
------------[ cut here ]------------
!PageLargeKmalloc(page)
WARNING: mm/slub.c:6471 at free_large_kmalloc+0x9b/0x110 mm/slub.c:6471, CPU#1: kworker/1:3/5897
Modules linked in:
CPU: 1 UID: 0 PID: 5897 Comm: kworker/1:3 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:free_large_kmalloc+0x9b/0x110 mm/slub.c:6471
Code: 8b 43 30 83 f8 ff 74 13 25 00 00 00 ff 3d 00 00 00 f8 75 74 c7 43 30 ff ff ff ff 48 89 df 89 ee 5b 41 5e 5d e9 96 c8 fc ff 90 <0f> 0b 90 48 89 df 48 c7 c6 13 fb 9a 8d 5b 41 5e 5d e9 df a9 04 ff
RSP: 0018:ffffc90003f5eb20 EFLAGS: 00010206
RAX: 00000000ff000000 RBX: ffffea0001751880 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffff88805d462000 RDI: ffffea0001751880
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1006dd2b41 R12: 1ffff110080e2e82
R13: ffff88802c1f4380 R14: ffff888036e95a60 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888125b68000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000565060955030 CR3: 000000002a826000 CR4: 00000000003526f0
Call Trace:
urb_destroy drivers/usb/core/urb.c:25 [inline]
kref_put include/linux/kref.h:65 [inline]
usb_free_urb+0xd0/0x120 drivers/usb/core/urb.c:96
smsusb_term_device+0x1d7/0x3e0 drivers/media/usb/siano/smsusb.c:352
smsusb_init_device drivers/media/usb/siano/smsusb.c:497 [inline]
smsusb_probe+0x1aba/0x2280 drivers/media/usb/siano/smsusb.c:575
usb_probe_interface+0x659/0xc70 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x267/0xaf0 drivers/base/dd.c:709
__driver_probe_device+0x1ef/0x380 drivers/base/dd.c:871
driver_probe_device+0x4f/0x240 drivers/base/dd.c:901
__device_attach_driver+0x279/0x430 drivers/base/dd.c:1029
bus_for_each_drv+0x25b/0x2f0 drivers/base/bus.c:500
__device_attach+0x2c8/0x450 drivers/base/dd.c:1101
device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1156
bus_probe_device+0x12d/0x220 drivers/base/bus.c:613
device_add+0x7e9/0xbb0 drivers/base/core.c:3706
usb_set_configuration+0x1a87/0x2110 drivers/usb/core/message.c:2268
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:709
__driver_probe_device+0x1ef/0x380 drivers/base/dd.c:871
driver_probe_device+0x4f/0x240 drivers/base/dd.c:901
__device_attach_driver+0x279/0x430 drivers/base/dd.c:1029
bus_for_each_drv+0x25b/0x2f0 drivers/base/bus.c:500
__device_attach+0x2c8/0x450 drivers/base/dd.c:1101
device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1156
bus_probe_device+0x12d/0x220 drivers/base/bus.c:613
device_add+0x7e9/0xbb0 drivers/base/core.c:3706
usb_new_device+0x9f8/0x16e0 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+0x2a49/0x4f60 drivers/usb/core/hub.c:5953
process_one_work kernel/workqueue.c:3308 [inline]
process_scheduled_works+0xb68/0x1910 kernel/workqueue.c:3399
worker_thread+0xa90/0x1040 kernel/workqueue.c:3485
kthread+0x388/0x470 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