Extracting prog: 6m55.615006224s
Minimizing prog: 1h13m6.750490513s
Simplifying prog options: 18m21.341563901s
Extracting C: 5m14.917916382s
Simplifying C: 0s


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:namespace 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-syz_open_dev$evdev-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid-syz_usb_disconnect-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_open_dev$evdev(0x0, 0x4cc6, 0x2)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (async, rerun: 64)
r1 = syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)
syz_usb_disconnect(r1)
syz_usb_connect$hid(0x2, 0x36, 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:namespace 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-syz_open_dev$evdev-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid-syz_usb_disconnect-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_open_dev$evdev(0x0, 0x4cc6, 0x2)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (async, rerun: 64)
r1 = syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)
syz_usb_disconnect(r1)
syz_usb_connect$hid(0x2, 0x36, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in rtsx_usb_ms_handle_req
single: successfully extracted reproducer
found reproducer with 7 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_open_dev$evdev-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid-syz_usb_disconnect
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_open_dev$evdev(0x0, 0x4cc6, 0x2)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (async, rerun: 64)
r1 = syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)
syz_usb_disconnect(r1)

program crashed: KASAN: slab-use-after-free Write in rtsx_usb_ms_handle_req
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_open_dev$evdev-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_open_dev$evdev(0x0, 0x4cc6, 0x2)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (async, rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)

program crashed: KASAN: slab-use-after-free Write in rtsx_usb_ms_handle_req
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_open_dev$evdev-syz_usb_ep_read-syz_usb_ep_write
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_open_dev$evdev(0x0, 0x4cc6, 0x2)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (async, rerun: 64)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_open_dev$evdev-syz_usb_ep_read-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_open_dev$evdev(0x0, 0x4cc6, 0x2)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_open_dev$evdev-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_open_dev$evdev(0x0, 0x4cc6, 0x2)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (async, rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (async, rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)

program crashed: KASAN: slab-use-after-free Read in rtsx_usb_ms_handle_req
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
syz_usb_ep_read(0xffffffffffffffff, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(0xffffffffffffffff, 0x82, 0x0, 0x0) (async, rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, 0x0, 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (async, rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (async, rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (async, rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (async, rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)

program crashed: KASAN: slab-use-after-free Write in rtsx_usb_ms_handle_req
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0) (async)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Write in rtsx_usb_ms_handle_req
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Write in rtsx_usb_ms_handle_req
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in rtsx_usb_ms_handle_req
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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-syz_usb_ep_read-syz_usb_ep_write-syz_usb_connect$hid
detailed listing:
executing program 0:
r0 = syz_usb_connect(0x3, 0x39, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002ffffff40da0b29010001000000010902270001010080320904000003ffffff0007050102000200070582020002"], 0x0)
syz_usb_ep_read(r0, 0x1, 0x0, 0x0) (async, rerun: 64)
syz_usb_ep_write(r0, 0x82, 0x0, 0x0) (rerun: 64)
syz_usb_connect$hid(0x3, 0x36, 0x0, 0x0)

program crashed: KASAN: slab-use-after-free Read in rtsx_usb_ms_handle_req
validation run: crashed=true
reproducing took 1h57m31.161898284s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in rtsx_usb_ms_issue_cmd drivers/memstick/host/rtsx_usb_ms.c:486 [inline]
BUG: KASAN: slab-use-after-free in rtsx_usb_ms_handle_req+0x10d2/0x1900 drivers/memstick/host/rtsx_usb_ms.c:531
Read of size 1 at addr ffff888020f6b071 by task kworker/1:1/5678

CPU: 1 UID: 0 PID: 5678 Comm: kworker/1:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: events rtsx_usb_ms_handle_req
Call Trace:
 <TASK>
 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
 rtsx_usb_ms_issue_cmd drivers/memstick/host/rtsx_usb_ms.c:486 [inline]
 rtsx_usb_ms_handle_req+0x10d2/0x1900 drivers/memstick/host/rtsx_usb_ms.c:531
 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
 </TASK>

Allocated by task 1003:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:409 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:426
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x321/0x600 mm/slub.c:5563
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 _kzalloc_noprof include/linux/slab.h:1312 [inline]
 memstick_alloc_card drivers/memstick/core/memstick.c:383 [inline]
 memstick_check+0x1a7/0x1250 drivers/memstick/core/memstick.c:452
 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

Freed by task 1003:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:264 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2748 [inline]
 slab_free mm/slub.c:6509 [inline]
 kfree+0x1c5/0x650 mm/slub.c:6802
 memstick_alloc_card drivers/memstick/core/memstick.c:420 [inline]
 memstick_check+0x7b6/0x1250 drivers/memstick/core/memstick.c:452
 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 object at ffff888020f6b000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 113 bytes inside of
 freed 2048-byte region [ffff888020f6b000, ffff888020f6b800)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x20f68
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801b042000 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801b042000 dead000000000100 dead000000000122
head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 00fff00000000003 fffffffffffffe01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 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 15987255541
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
 prep_new_page mm/page_alloc.c:1879 [inline]
 get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
 __alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
 alloc_slab_page mm/slub.c:3347 [inline]
 allocate_slab+0x7d/0x620 mm/slub.c:3462
 new_slab mm/slub.c:3513 [inline]
 refill_objects+0x2d5/0x350 mm/slub.c:7418
 refill_sheaf mm/slub.c:2885 [inline]
 __pcs_replace_empty_main+0x2c8/0x6c0 mm/slub.c:4774
 alloc_from_pcs mm/slub.c:4850 [inline]
 slab_alloc_node mm/slub.c:4984 [inline]
 __do_kmalloc_node mm/slub.c:5413 [inline]
 __kvmalloc_node_noprof+0x63c/0x820 mm/slub.c:7015
 v4l2_ctrl_new+0x103c/0x1820 drivers/media/v4l2-core/v4l2-ctrls-core.c:2256
 v4l2_ctrl_new_custom+0x5b4/0x7f0 drivers/media/v4l2-core/v4l2-ctrls-core.c:2342
 vivid_create_controls+0xdcb/0x3c50 drivers/media/test-drivers/vivid/vivid-ctrls.c:1740
 vivid_create_instance drivers/media/test-drivers/vivid/vivid-core.c:1933 [inline]
 vivid_probe+0x410f/0x70c0 drivers/media/test-drivers/vivid/vivid-core.c:2095
 platform_probe+0xf9/0x190 drivers/base/platform.c:1507
 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
 __driver_attach+0x339/0x600 drivers/base/dd.c:1292
page last free pid 9 tgid 9 ts 5727184583 stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1418 [inline]
 free_pages_prepare+0x9eb/0xaf0 mm/page_alloc.c:1463
 __free_contig_range_common+0x174/0x340 mm/page_alloc.c:7072
 __free_contig_range mm/page_alloc.c:7117 [inline]
 free_pages_bulk+0x48/0x120 mm/page_alloc.c:5322
 vm_area_free_pages mm/vmalloc.c:3461 [inline]
 vfree+0x231/0x490 mm/vmalloc.c:3510
 delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3414
 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

Memory state around the buggy address:
 ffff888020f6af00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888020f6af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888020f6b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff888020f6b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888020f6b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: slab-use-after-free in rtsx_usb_ms_issue_cmd drivers/memstick/host/rtsx_usb_ms.c:486 [inline]
BUG: KASAN: slab-use-after-free in rtsx_usb_ms_handle_req+0x10d2/0x1900 drivers/memstick/host/rtsx_usb_ms.c:531
Read of size 1 at addr ffff888020f6b071 by task kworker/1:1/5678

CPU: 1 UID: 0 PID: 5678 Comm: kworker/1:1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: events rtsx_usb_ms_handle_req
Call Trace:
 <TASK>
 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
 rtsx_usb_ms_issue_cmd drivers/memstick/host/rtsx_usb_ms.c:486 [inline]
 rtsx_usb_ms_handle_req+0x10d2/0x1900 drivers/memstick/host/rtsx_usb_ms.c:531
 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
 </TASK>

Allocated by task 1003:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:409 [inline]
 __kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:426
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x321/0x600 mm/slub.c:5563
 _kmalloc_noprof include/linux/slab.h:991 [inline]
 _kzalloc_noprof include/linux/slab.h:1312 [inline]
 memstick_alloc_card drivers/memstick/core/memstick.c:383 [inline]
 memstick_check+0x1a7/0x1250 drivers/memstick/core/memstick.c:452
 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

Freed by task 1003:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:264 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2748 [inline]
 slab_free mm/slub.c:6509 [inline]
 kfree+0x1c5/0x650 mm/slub.c:6802
 memstick_alloc_card drivers/memstick/core/memstick.c:420 [inline]
 memstick_check+0x7b6/0x1250 drivers/memstick/core/memstick.c:452
 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 object at ffff888020f6b000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 113 bytes inside of
 freed 2048-byte region [ffff888020f6b000, ffff888020f6b800)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x20f68
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801b042000 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801b042000 dead000000000100 dead000000000122
head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 00fff00000000003 fffffffffffffe01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 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 15987255541
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
 prep_new_page mm/page_alloc.c:1879 [inline]
 get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943
 __alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436
 alloc_slab_page mm/slub.c:3347 [inline]
 allocate_slab+0x7d/0x620 mm/slub.c:3462
 new_slab mm/slub.c:3513 [inline]
 refill_objects+0x2d5/0x350 mm/slub.c:7418
 refill_sheaf mm/slub.c:2885 [inline]
 __pcs_replace_empty_main+0x2c8/0x6c0 mm/slub.c:4774
 alloc_from_pcs mm/slub.c:4850 [inline]
 slab_alloc_node mm/slub.c:4984 [inline]
 __do_kmalloc_node mm/slub.c:5413 [inline]
 __kvmalloc_node_noprof+0x63c/0x820 mm/slub.c:7015
 v4l2_ctrl_new+0x103c/0x1820 drivers/media/v4l2-core/v4l2-ctrls-core.c:2256
 v4l2_ctrl_new_custom+0x5b4/0x7f0 drivers/media/v4l2-core/v4l2-ctrls-core.c:2342
 vivid_create_controls+0xdcb/0x3c50 drivers/media/test-drivers/vivid/vivid-ctrls.c:1740
 vivid_create_instance drivers/media/test-drivers/vivid/vivid-core.c:1933 [inline]
 vivid_probe+0x410f/0x70c0 drivers/media/test-drivers/vivid/vivid-core.c:2095
 platform_probe+0xf9/0x190 drivers/base/platform.c:1507
 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
 __driver_attach+0x339/0x600 drivers/base/dd.c:1292
page last free pid 9 tgid 9 ts 5727184583 stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1418 [inline]
 free_pages_prepare+0x9eb/0xaf0 mm/page_alloc.c:1463
 __free_contig_range_common+0x174/0x340 mm/page_alloc.c:7072
 __free_contig_range mm/page_alloc.c:7117 [inline]
 free_pages_bulk+0x48/0x120 mm/page_alloc.c:5322
 vm_area_free_pages mm/vmalloc.c:3461 [inline]
 vfree+0x231/0x490 mm/vmalloc.c:3510
 delayed_vfree_work+0x55/0x80 mm/vmalloc.c:3414
 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

Memory state around the buggy address:
 ffff888020f6af00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888020f6af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888020f6b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff888020f6b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888020f6b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================