Extracting prog: 3m32.931753891s
Minimizing prog: 1h5m42.627299815s
Simplifying prog options: 5m15.732387854s
Extracting C: 2m31.267168552s
Simplifying C: 13m40.848048375s


extracting reproducer from 1 programs
testing a last program of every proc
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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program crashed: INFO: task hung in usb_device_read
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)

program did not crash
testing program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
read$FUSE(0xffffffffffffffff, &(0x7f00000010c0)={0x2020}, 0x2020)

program did not crash
testing program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program did not crash
testing program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program did not crash
testing program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program did not crash
testing program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, 0x0, 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program did not crash
testing program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program did not crash
testing program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(0x0, 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program did not crash
testing program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, 0x0, &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program did not crash
testing program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program did not crash
testing program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program did not crash
testing program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
simplifying guilty program options
testing program (duration=5m25.65008008s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program crashed: INFO: task hung in usb_device_read
extracting C reproducer
testing compiled C program (duration=5m25.65008008s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
program crashed: INFO: task hung in usb_device_read
simplifying C reproducer
testing compiled C program (duration=5m25.65008008s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
program crashed: INFO: task hung in usb_device_read
testing compiled C program (duration=5m25.65008008s, {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-mkdir-mount-openat-read$FUSE
program crashed: INFO: task hung in usb_device_read
testing compiled C program (duration=5m25.65008008s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
program crashed: INFO: task hung in usb_device_read
testing compiled C program (duration=5m25.65008008s, {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-mkdir-mount-openat-read$FUSE
program crashed: INFO: task hung in usb_device_read
testing compiled C program (duration=5m25.65008008s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdir-mount-openat-read$FUSE
program crashed: INFO: task hung in usb_device_read
testing program (duration=5m25.65008008s, {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-mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program crashed: INFO: task hung in usb_device_read
validation run: crashed=true
testing program (duration=5m25.65008008s, {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-mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program crashed: INFO: task hung in usb_device_read
validation run: crashed=true
testing program (duration=5m25.65008008s, {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-mkdir-mount-openat-read$FUSE
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x32, &(0x7f0000000640)=ANY=[@ANYBLOB="1201000200000040c605001000000000000109022000010100803209040000020806500007058102000200070502020002"], 0x0)
mkdir(&(0x7f0000000700)='./debug\x00', 0x1f7)
mount(0x0, &(0x7f0000000100)='./debug\x00', &(0x7f0000000140)='debugfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./debug/usb/devices\x00', 0x0, 0x0)
read$FUSE(r0, &(0x7f00000010c0)={0x2020}, 0x2020)

program crashed: INFO: task hung in usb_device_read
validation run: crashed=true
reproducing took 1h41m38.386874766s
repro crashed as (corrupted=false):
INFO: task syz.2.17:380 blocked for more than 122 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.17        state:D stack:0     pid:380   tgid:380   ppid:376    flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x16fe/0x23d0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8032
 __mutex_lock_common kernel/locking/mutex.c:707 [inline]
 __mutex_lock+0x902/0x1b90 kernel/locking/mutex.c:806
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1136
 mutex_lock+0x113/0x1d0 kernel/locking/mutex.c:285
 device_lock include/linux/device.h:911 [inline]
 usb_device_read+0x176/0x2d0 drivers/usb/core/devices.c:528
 full_proxy_read+0x128/0x1e0 fs/debugfs/file.c:323
 vfs_read+0x28b/0xc70 fs/read_write.c:568
 ksys_read+0x145/0x260 fs/read_write.c:713
 __do_sys_read fs/read_write.c:723 [inline]
 __se_sys_read fs/read_write.c:721 [inline]
 __x64_sys_read+0x7f/0x90 fs/read_write.c:721
 x64_sys_call+0x2638/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f4854f9e559
RSP: 002b:00007ffff46198c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f4855225fa0 RCX: 00007f4854f9e559
RDX: 0000000000002020 RSI: 00002000000010c0 RDI: 0000000000000004
RBP: 00007f4855035ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4855225fac R14: 00007f4855225fa0 R15: 00007f4855225fa0
 </TASK>
INFO: task syz.3.18:392 blocked for more than 123 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.18        state:D stack:0     pid:392   tgid:392   ppid:388    flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x16fe/0x23d0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8032
 __mutex_lock_common kernel/locking/mutex.c:707 [inline]
 __mutex_lock+0x902/0x1b90 kernel/locking/mutex.c:806
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1136
 mutex_lock+0x113/0x1d0 kernel/locking/mutex.c:285
 usb_device_read+0xe6/0x2d0 drivers/usb/core/devices.c:522
 full_proxy_read+0x128/0x1e0 fs/debugfs/file.c:323
 vfs_read+0x28b/0xc70 fs/read_write.c:568
 ksys_read+0x145/0x260 fs/read_write.c:713
 __do_sys_read fs/read_write.c:723 [inline]
 __se_sys_read fs/read_write.c:721 [inline]
 __x64_sys_read+0x7f/0x90 fs/read_write.c:721
 x64_sys_call+0x2638/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7ffa16b9e559
RSP: 002b:00007ffd8ef96ac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007ffa16e25fa0 RCX: 00007ffa16b9e559
RDX: 0000000000002020 RSI: 00002000000010c0 RDI: 0000000000000004
RBP: 00007ffa16c35ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffa16e25fac R14: 00007ffa16e25fa0 R15: 00007ffa16e25fa0
 </TASK>
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 bcd0852b9269e5a174a9e289c8567167f3c3d1d7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 nmi_cpu_backtrace+0x2ba/0x2d0 lib/nmi_backtrace.c:114
 nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:63
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
 cpumask_backtrace+0x1f/0x30 lib/nmi_backtrace.c:127
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
 watchdog+0xe45/0xf90 kernel/hung_task.c:423
 kthread+0x2c7/0x360 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 bcd0852b9269e5a174a9e289c8567167f3c3d1d7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:116
Code: cc cc cc cc cc cc cc b8 30 07 12 34 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 83 09 3f 00 55 48 89 e5 fb f4 <5d> c3 cc cc cc cc cc cc cc cc cc cc cc b8 00 00 00 00 90 90 90 90
RSP: 0018:ffffc900001a7e00 EFLAGS: 000002c2
RAX: ffff8881f6d00000 RBX: ffff8881036693c0 RCX: ffffffff85a8553d
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000e5c334
RBP: ffffc900001a7e00 R08: ffff8881f6d396fb R09: 1ffff1103eda72df
R10: dffffc0000000000 R11: ffffed103eda72e0 R12: 0000000000000000
R13: 1ffff110206cd278 R14: dffffc0000000000 R15: ffffffff886da3e8
FS:  0000000000000000(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6ecd870220 CR3: 000000011b960000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/include/asm/paravirt.h:-1 [inline]
 default_idle+0x17/0x30 arch/x86/kernel/process.c:754
 arch_cpu_idle+0xd/0x20 arch/x86/kernel/process.c:791
 default_idle_call+0x3e/0x80 kernel/sched/idle.c:117
 cpuidle_idle_call kernel/sched/idle.c:193 [inline]
 do_idle+0x2fc/0x570 kernel/sched/idle.c:346
 cpu_startup_entry+0x47/0x60 kernel/sched/idle.c:445
 start_secondary+0x12e/0x140 arch/x86/kernel/smpboot.c:314
 common_startup_64+0x13b/0x157
 </TASK>

final repro crashed as (corrupted=false):
INFO: task syz.2.17:380 blocked for more than 122 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.17        state:D stack:0     pid:380   tgid:380   ppid:376    flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x16fe/0x23d0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8032
 __mutex_lock_common kernel/locking/mutex.c:707 [inline]
 __mutex_lock+0x902/0x1b90 kernel/locking/mutex.c:806
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1136
 mutex_lock+0x113/0x1d0 kernel/locking/mutex.c:285
 device_lock include/linux/device.h:911 [inline]
 usb_device_read+0x176/0x2d0 drivers/usb/core/devices.c:528
 full_proxy_read+0x128/0x1e0 fs/debugfs/file.c:323
 vfs_read+0x28b/0xc70 fs/read_write.c:568
 ksys_read+0x145/0x260 fs/read_write.c:713
 __do_sys_read fs/read_write.c:723 [inline]
 __se_sys_read fs/read_write.c:721 [inline]
 __x64_sys_read+0x7f/0x90 fs/read_write.c:721
 x64_sys_call+0x2638/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f4854f9e559
RSP: 002b:00007ffff46198c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f4855225fa0 RCX: 00007f4854f9e559
RDX: 0000000000002020 RSI: 00002000000010c0 RDI: 0000000000000004
RBP: 00007f4855035ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4855225fac R14: 00007f4855225fa0 R15: 00007f4855225fa0
 </TASK>
INFO: task syz.3.18:392 blocked for more than 123 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.18        state:D stack:0     pid:392   tgid:392   ppid:388    flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:6063 [inline]
 __schedule+0x16fe/0x23d0 kernel/sched/core.c:7883
 __schedule_loop kernel/sched/core.c:7960 [inline]
 schedule+0xc5/0x240 kernel/sched/core.c:7975
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:8032
 __mutex_lock_common kernel/locking/mutex.c:707 [inline]
 __mutex_lock+0x902/0x1b90 kernel/locking/mutex.c:806
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1136
 mutex_lock+0x113/0x1d0 kernel/locking/mutex.c:285
 usb_device_read+0xe6/0x2d0 drivers/usb/core/devices.c:522
 full_proxy_read+0x128/0x1e0 fs/debugfs/file.c:323
 vfs_read+0x28b/0xc70 fs/read_write.c:568
 ksys_read+0x145/0x260 fs/read_write.c:713
 __do_sys_read fs/read_write.c:723 [inline]
 __se_sys_read fs/read_write.c:721 [inline]
 __x64_sys_read+0x7f/0x90 fs/read_write.c:721
 x64_sys_call+0x2638/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:1
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7ffa16b9e559
RSP: 002b:00007ffd8ef96ac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007ffa16e25fa0 RCX: 00007ffa16b9e559
RDX: 0000000000002020 RSI: 00002000000010c0 RDI: 0000000000000004
RBP: 00007ffa16c35ab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffa16e25fac R14: 00007ffa16e25fa0 R15: 00007ffa16e25fa0
 </TASK>
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 bcd0852b9269e5a174a9e289c8567167f3c3d1d7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 nmi_cpu_backtrace+0x2ba/0x2d0 lib/nmi_backtrace.c:114
 nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:63
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
 cpumask_backtrace+0x1f/0x30 lib/nmi_backtrace.c:127
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
 watchdog+0xe45/0xf90 kernel/hung_task.c:423
 kthread+0x2c7/0x360 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 bcd0852b9269e5a174a9e289c8567167f3c3d1d7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:116
Code: cc cc cc cc cc cc cc b8 30 07 12 34 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 83 09 3f 00 55 48 89 e5 fb f4 <5d> c3 cc cc cc cc cc cc cc cc cc cc cc b8 00 00 00 00 90 90 90 90
RSP: 0018:ffffc900001a7e00 EFLAGS: 000002c2
RAX: ffff8881f6d00000 RBX: ffff8881036693c0 RCX: ffffffff85a8553d
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000e5c334
RBP: ffffc900001a7e00 R08: ffff8881f6d396fb R09: 1ffff1103eda72df
R10: dffffc0000000000 R11: ffffed103eda72e0 R12: 0000000000000000
R13: 1ffff110206cd278 R14: dffffc0000000000 R15: ffffffff886da3e8
FS:  0000000000000000(0000) GS:ffff8881f6d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6ecd870220 CR3: 000000011b960000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/include/asm/paravirt.h:-1 [inline]
 default_idle+0x17/0x30 arch/x86/kernel/process.c:754
 arch_cpu_idle+0xd/0x20 arch/x86/kernel/process.c:791
 default_idle_call+0x3e/0x80 kernel/sched/idle.c:117
 cpuidle_idle_call kernel/sched/idle.c:193 [inline]
 do_idle+0x2fc/0x570 kernel/sched/idle.c:346
 cpu_startup_entry+0x47/0x60 kernel/sched/idle.c:445
 start_secondary+0x12e/0x140 arch/x86/kernel/smpboot.c:314
 common_startup_64+0x13b/0x157
 </TASK>