Extracting prog: 2m24.637694567s
Minimizing prog: 29m13.683406114s
Simplifying prog options: 0s
Extracting C: 49.130205084s
Simplifying C: 10m9.5118634s


extracting reproducer from 62 programs
first checking the prog from the crash report
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}}): mkdirat-mount-mkdirat-mount-openat-write-openat-write-socket$inet_tcp-connect$inet-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./proc/net/rpc/auth.rpcsec.context/channel\x00', 0x1, 0x0)
write(r1, &(0x7f0000000100)='\\x01000000 2000000000 0 0 0 krb5 \\x00000000ffffffff0000000000000000120000000000000000000000000000000000000000000000000000000000000000000000 client\n', 0x96)
r2 = socket$inet_tcp(0x2, 0x1, 0x0)
connect$inet(r2, &(0x7f0000000400)={0x2, 0x1, @loopback}, 0x10)
write(r2, &(0x7f0000000500)="80000060000000010000000000000002000186a0000000030000000000000006000000010000001800000001000000000000000400000001000000020000000401000000000000060000000000000000000000040000000000000020020100ff00"/124, 0x64)

program crashed: kernel BUG in svc_destroy
single: successfully extracted reproducer
found reproducer with 11 syscalls
minimizing guilty program
testing program (duration=45.205017394s, {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}}): mkdirat-mount-mkdirat-mount-openat-write-openat-write-socket$inet_tcp-connect$inet
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./proc/net/rpc/auth.rpcsec.context/channel\x00', 0x1, 0x0)
write(r1, &(0x7f0000000100)='\\x01000000 2000000000 0 0 0 krb5 \\x00000000ffffffff0000000000000000120000000000000000000000000000000000000000000000000000000000000000000000 client\n', 0x96)
r2 = socket$inet_tcp(0x2, 0x1, 0x0)
connect$inet(r2, &(0x7f0000000400)={0x2, 0x1, @loopback}, 0x10)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.205017394s, {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}}): mkdirat-mount-mkdirat-mount-openat-write-openat-write-socket$inet_tcp
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./proc/net/rpc/auth.rpcsec.context/channel\x00', 0x1, 0x0)
write(r1, &(0x7f0000000100)='\\x01000000 2000000000 0 0 0 krb5 \\x00000000ffffffff0000000000000000120000000000000000000000000000000000000000000000000000000000000000000000 client\n', 0x96)
socket$inet_tcp(0x2, 0x1, 0x0)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.205017394s, {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}}): mkdirat-mount-mkdirat-mount-openat-write-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./proc/net/rpc/auth.rpcsec.context/channel\x00', 0x1, 0x0)
write(r1, &(0x7f0000000100)='\\x01000000 2000000000 0 0 0 krb5 \\x00000000ffffffff0000000000000000120000000000000000000000000000000000000000000000000000000000000000000000 client\n', 0x96)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.205017394s, {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}}): mkdirat-mount-mkdirat-mount-openat-write-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)
openat(0xffffffffffffff9c, &(0x7f00000000c0)='./proc/net/rpc/auth.rpcsec.context/channel\x00', 0x1, 0x0)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.205017394s, {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}}): mkdirat-mount-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.205017394s, {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}}): mkdirat-mount-mkdirat-mount-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)

program did not crash
testing program (duration=45.205017394s, {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}}): mkdirat-mount-mkdirat-mount-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000300)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.205017394s, {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}}): mkdirat-mount-mkdirat-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.205017394s, {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}}): mkdirat-mount-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.205017394s, {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}}): mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, 0x0, 0x0)

program did not crash
testing program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300), 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
simplifying C reproducer
testing compiled C program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
testing compiled C program (duration=45.205017394s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false 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}}): mkdirat-mount-openat-write
program did not crash
testing compiled C program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
testing compiled C program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
testing compiled C program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
testing compiled C program (duration=45.205017394s, {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}}): mkdirat-mount-openat-write
program did not crash
testing compiled C program (duration=45.205017394s, {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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
testing compiled C program (duration=45.205017394s, {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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
testing program (duration=45.205017394s, {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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
validation run: crashed=true
testing program (duration=45.205017394s, {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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
validation run: crashed=true
testing program (duration=45.205017394s, {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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000240)='./nfsd\x00', &(0x7f0000000280)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000300)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
validation run: crashed=true
reproducing took 47m43.490631645s
repro crashed as (corrupted=false):
------------[ cut here ]------------
kernel BUG at net/sunrpc/svc.c:572!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4446 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:572
Code: 5f 5d e9 ff ae c3 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 66 43 c4 f8 e9 17 ff ff ff e8 ac 20 7f f8 <0f> 0b e8 a5 20 7f f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900011ffad0 EFLAGS: 00010293
RAX: ffffffff88f9e0d4 RBX: ffff88807a251450 RCX: ffff88802723bb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900011ffc78 R08: ffffffff901ee1ff R09: 1ffffffff203dc3f
R10: dffffc0000000000 R11: fffffbfff203dc40 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807a251468 R15: 0000000000000001
FS:  000055556b36e500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007febc7314286 CR3: 000000001e81b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:123 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:770 [inline]
 __write_ports fs/nfsd/nfsctl.c:796 [inline]
 write_ports+0xa26/0xb80 fs/nfsd/nfsctl.c:849
 nfsctl_transaction_write+0x105/0x150 fs/nfsd/nfsctl.c:114
 vfs_write+0x304/0xd70 fs/read_write.c:592
 ksys_write+0x153/0x260 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f579d344e99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffeff98dd38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f579d5ccfa0 RCX: 00007f579d344e99
RDX: 0000000000000009 RSI: 0000200000000300 RDI: 0000000000000003
RBP: 00007f579d3daeaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f579d5ccfac R14: 00007f579d5ccfa0 R15: 00007f579d5ccfa0
 </TASK>
Modules linked in:
---[ end trace 58c8ad9b720f4e57 ]---
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:572
Code: 5f 5d e9 ff ae c3 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 66 43 c4 f8 e9 17 ff ff ff e8 ac 20 7f f8 <0f> 0b e8 a5 20 7f f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900011ffad0 EFLAGS: 00010293
RAX: ffffffff88f9e0d4 RBX: ffff88807a251450 RCX: ffff88802723bb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900011ffc78 R08: ffffffff901ee1ff R09: 1ffffffff203dc3f
R10: dffffc0000000000 R11: fffffbfff203dc40 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807a251468 R15: 0000000000000001
FS:  000055556b36e500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f516e962286 CR3: 000000001e81b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

final repro crashed as (corrupted=false):
------------[ cut here ]------------
kernel BUG at net/sunrpc/svc.c:572!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4446 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:572
Code: 5f 5d e9 ff ae c3 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 66 43 c4 f8 e9 17 ff ff ff e8 ac 20 7f f8 <0f> 0b e8 a5 20 7f f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900011ffad0 EFLAGS: 00010293
RAX: ffffffff88f9e0d4 RBX: ffff88807a251450 RCX: ffff88802723bb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900011ffc78 R08: ffffffff901ee1ff R09: 1ffffffff203dc3f
R10: dffffc0000000000 R11: fffffbfff203dc40 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807a251468 R15: 0000000000000001
FS:  000055556b36e500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007febc7314286 CR3: 000000001e81b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:123 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:770 [inline]
 __write_ports fs/nfsd/nfsctl.c:796 [inline]
 write_ports+0xa26/0xb80 fs/nfsd/nfsctl.c:849
 nfsctl_transaction_write+0x105/0x150 fs/nfsd/nfsctl.c:114
 vfs_write+0x304/0xd70 fs/read_write.c:592
 ksys_write+0x153/0x260 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f579d344e99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffeff98dd38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f579d5ccfa0 RCX: 00007f579d344e99
RDX: 0000000000000009 RSI: 0000200000000300 RDI: 0000000000000003
RBP: 00007f579d3daeaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f579d5ccfac R14: 00007f579d5ccfa0 R15: 00007f579d5ccfa0
 </TASK>
Modules linked in:
---[ end trace 58c8ad9b720f4e57 ]---
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:572
Code: 5f 5d e9 ff ae c3 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 66 43 c4 f8 e9 17 ff ff ff e8 ac 20 7f f8 <0f> 0b e8 a5 20 7f f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900011ffad0 EFLAGS: 00010293
RAX: ffffffff88f9e0d4 RBX: ffff88807a251450 RCX: ffff88802723bb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900011ffc78 R08: ffffffff901ee1ff R09: 1ffffffff203dc3f
R10: dffffc0000000000 R11: fffffbfff203dc40 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807a251468 R15: 0000000000000001
FS:  000055556b36e500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f516e962286 CR3: 000000001e81b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400